SIPROTEC 5 Devices Protection, Automation and Monitoring

Transcription

1 SIPROTEC 5 Devices Protection, Automation and Monitoring Catalog SIPROTEC 5.0 Edition Answers for infrastructure and cities.

2 Overview of documentation SIPROTEC 5 catalog Device manuals Hardware manual Operating manual SIPROTEC 5/DIGSI 5 Tutorial Selection Guide for SIPROTEC and Reyrolle Communication protocol manuals Product information Engineering Guide Online help DIGSI 5 Online help devices Overview of documentation for the SIPROTEC 5 system SIPROTEC 5 catalog The catalog describes the system features and the devices of SIPROTEC 5. Selection guide for SIPROTEC and Reyrolle The selection guide offers an overview of the device series of the Siemens protection devies, and a device selection table. Device manuals The device manuals describe the functions and applications of a specific SIPROTEC 5 device. The printed manual and the online help for the device have the same informational structure. Hardware manual The hardware manual describes the hardware components and device combinations of the SIPROTEC 5 device family. Operating manual The operating manual describes the basic principles and procedures for operating and assembling the devices of the SIPROTEC 5 device family. Communication protocol manuals The communication protocol manuals include a description of specific protocols for communication within the SIPROTEC 5 device family and with higher-level control centers. Product information The product information includes general information about device installation, technical data, limit values for input and output modules, and conditions when preparing for operation. This document is provided with each SIPROTEC 5 device. Engineering Guide The Engineering Guide describes the important steps of Engineering with DIGIS 5. The Engineering Guide offers information on how to load a configuration to a SIPROTEC 5 device and how to update the device functionality of a SIPROTEC 5 device. DIGSI 5 online help The DIGSI 5 online help contains a help package for DIGSI 5 and CFC. The help package for DIGSI 5 includes a description of the basic operation of software, the DIGSI principles and editors. The help package for CFC includes an introduction to CFC programming, basic examples of working with CFC, and a reference chapter with all the CFC blocks available for the SIPROTEC 5 range. Online help devices The online help for devices has the same information structure as the device manual. SIPROTEC 5/DIGSI 5 Tutorial The tutorial on the DVD contains brief information about important product features, more detailed information about the individual technical areas, as well as operating sequences with tasks based on practical operation and a brief explanation of SIPROTEC 5 and DIGSI 5. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

3 Contents SIPROTEC 5 Devices Protection, Automation and Monitoring Catalog SIP 5.0 Edition Invalid: E5000-K4605-A0-A-7600 E5000-K4605-A0-A-7600 E5000-K4605-A0-A-7600 IC000-K4605-A04-A-7600 IC000-K4605-A05-A-7600 IC000-K4605-A06-A-7600 IC000-K4605-A07-A-7600 SIPROTEC 5 System Editorial / SIPROTEC 5 System. Innovation Highlights. Functional Integration. Hardware.4 Engineering.5 Communication.6 IEC 6850 Simply Usable.7 Test and Diagnostics.8 Safety Concept.9 Devices Device Types. Relay Selection Guide. Application Examples. Overcurrent Protection SIPROTEC 7SJ8, 7SJ85.4 Line Protection Distance protection SIPROTEC 7SA84, 7SA86, 7SA87 Line differential protection SIPROTEC 7DS84, 7SD86, 7SD87 Combined line differential and distance protection SIPROTEC 7SL86, 7SL87 Breaker management SIPROTEC 7VK87 Overcurrent protection SIPROTEC 7SJ86.5 Transformator Protection SIPROTEC 7UT85, 7UT86, 7UT87.6 Motor Protection SIPROTEC 7SK8, 7SK85.7 Busbar Protection SIPROTEC 7SS85.8 Bay Controllers SIPROTEC 6MD85, 6MD86.9 Digital Fault Recorder SIPROTEC 7KE85.0 Appendix DIGSI 5 Variants and System Requirements. Connection Variants. Connection Diagrams. The products and systems described in this catalog are manufactured and sold according to a certified management system (acc. to ISO 900, ISO 400 and BS OHSAS 800). Grouping Measured Values.4 Technical Data.5 Spare Parts/Accessories.6 Legal Notice.7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

4 The Introduction SIPROTEC 5 System Editorial SIPROTEC has been a recognized brand leader in digital protection and field devices on the energy market for decades. The Siemens high-performance SIPROTEC devices cover the entire power spectrum and can be implemented in a wide range of fields from power generation to very high voltage transmission and distribution network applications. Smart automation for transmission grids is the Siemens response to the present and future challenges to achieve a reliable and efficient energy supply. SIPROTEC 5 is an active component of the energy-efficient smart grid and an important building block in the complex distributed energy supply systems and networks solutions. The next generation of SIPROTEC devices, SIPROTEC 5, is based on the proven features of SIPROTEC 4 to provide you with a new, modern platform including both hardware and software. This platform offers an excellent solution to the challenges associated with evolving grid structures and workflows. The quality, reliability and proven functions of the former system have been preserved. Innovative approaches including holistic workflow, safety and security, and network stability monitoring (PMU functionality) have been added. The pioneering system architecture places you in full control of switchgear communications. A powerful, reliable communication infrastructure, combined with the flexible engineering capabilities serves as the basis for monitoring and controlling of distributed, decentralized systems. Seamless communications is the central component of the SIPROTEC 5 system architecture to provide flexibility, safety and security in the automated distributed network solutions. With SIPROTEC 5, you are at the beginning of a new generation of intelligent, digital multifunction field devices. The new operating tool DIGSI 5 offers individual support for you handles your specific workflow requirements, from system design to device selection and testing, covering the entire device lifecycle. The new tool offers cost savings over the entire lifecycle without compromising safety and system availability. With the new SIPROTEC 5 generation, you are well equipped to meet the growing economic and reliability demands imposed on your networks. The philosophy of SIPROTEC 5 is reflected in the modularity and flexibility of its hardware and software components. Perfectly tailored fit the custom fit for your switchgear and specifications for the application and standardization of energy automation. Ingo Erkens General Manager Infrastructure and Cities Sector Smart Grid Division Energy Automation./4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

5 The SIPROTEC 5 System Solutions for today s and future power supply systems for more than 00 years SIPROTEC has established itself on the energy market for decades as a powerful and complete system family of numerical protection relays and bay controllers from Siemens.... SIPROTEC protection relays from Siemens can be consistently used throughout all applications in medium and high voltage. With SIPROTEC, operators have their systems firmly and safely under control, and have the basis to implement cost-efficient solutions for all duties in modern, intelligent and smart grids. Users can combine the units of the different SIPROTEC device series at will for solving manifold duties because SIPROTEC stands for continuity, openness and future-proof design. As the innovation driver and trendsetter in the field of protection systems for 00 years, Siemens helps system operators to design their grids in an intelligent, ecological, reliable and efficient way, and to operate them economically. As a pioneer, Siemens has decisively influenced the development of numerical protection systems (Fig../). The first application went into operation in Würzburg, Germany, in 977. Consistent integration of protection and control functions for all SIPROTEC devices was the innovation step in the 90ies. After release of the communication standard IEC 6850 in the year 004, Siemens was the first manufacturer worldwide to put a system with this communication standard into operation. In the meantime we have delivered more than 50,000 devices with IEC 6850 included. SIPROTEC protection relays have approvals from many users for use in their power systems. The devices have also been certified by independent test institutes and universities (KEMA, EPRI, LOYD, UR Laboratories). Fig../ SIPROTEC family How can system operators benefit from this experience? Proven and complete applications Easy integration into your system Highest quality of hardware and software Excellent operator friendliness of devices and tools Easy data exchange between applications Extraordinary consistency between product and systemengineering Reduced complexity by easy operation Siemens as a reliable, worldwide operating partner. You ll find the information of the SIPROTEC 4 devices and the devices of SIPROTEC Compact in the subcatalogs or under: LSP eps LSP eps Fig../ SIPROTEC Pioneer over generations.7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./5

6 The SIPROTEC 5 System SIPROTEC 5 the new benchmark for protection, automation and monitoring of transmission grids The SIPROTEC 5 series is based on the long field experience of the SIPROTEC device series, and has been especially designed for the new requirements of modern systems. For this purpose, SIPROTEC 5 is equipped with extensive functionalities and device types. With the holistic and consistent engineering tool DIGSI 5, a solution has also been provided for the increasingly complex processes, from the design via the engineering phase up to the test and operation phase Thanks to the high modularity of hardware and software, the functionality and hardware of the devices can be tailored to the requested application and adjusted to the continuously changing requirements throughout the entire life cycle. Besides the reliable and selective protection and the complete automation function, SIPROTEC 5 offers an extensive database for operation and monitoring of modern power supply systems. Synchrophasors (PMU), power quality data and extensive operational equipment data are part of the scope of supply. Powerful protection functions guarantee the safety of the system operator s equipment and employees Individually configurable devices save money on initial investment as well as storage of spare parts, maintenance, expansion and adjustment of your equipment Clear and easy-to-use of devices and software thanks to userfriendly design Increase of reliability and quality of the engineering process High safety by consistent implementation of Safety and Security Powerful communication components guarantee safe and effective solutions Full compatibility between IEC 6850 Editions and Integrated switch for low-cost and redundant optical and electrical Ethernet rings Ethernet redundancy protocols RSTP, PRP and HSR for highest availability Efficient operating concepts by flexible engineering of IEC 6850 Edition Comprehensive database for monitoring of modern power grids Optimal smart automation platform for transmission grids based on integrated synchrophasor measurement units (PMU) and power quality functions. Fig../ SIPROTEC 5 modular hardware Fig../4 SIPROTEC 5 modular process connection LSP.0-00.eps LSP eps Fig../5 Application in a high-voltage power system LSP.0-00.eps./6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

7 Innovation Highlights With SIPROTEC 5, Siemens is writing yet another chapter in the successful history of protection technology, representing the 5 th digital generation and over 00 years of experience in protection. SIPROTEC 5 represents the next logical step in this development. With SIPROTEC 5, we have combined a functionality that has been proven and refined over years with a high-performance and flexible new platform, extended with trendsetting innovations for present and future demands. Holistic workflow The tools for end-to-end engineering from system design to operation will make your work easier throughout the entire process. The highlight of SIPROTEC 5 is the greater-than-ever emphasis on daily ease of operation. SIPROTEC 5 provides support along all the steps in the engineering workflow, allowing for system view management and configuration down to the details of individual devices, saving time and cost without compromising quality (Fig.. /). Holistic workflow in SIPROTEC 5 means: Integrated, consistent system and device engineering from the single line diagram of the unit all the way to device parameterization Simple, intuitive graphical linking of primary and secondary equipment Easily adaptable library of application templates for the most frequently used applications Manufacturer-independent tool for easy system engineering Open interfaces for seamless integration into your process environment Integrated tools for testing during engineering, commissioning, and for simulating operational scenarios, e.g., grid disruptions or switching operations. For you, Holistic workflow in SIPROTEC 5 means: An end-to-end tool from system design to operation even allowing crossing of functional and departmental boundaries saves time, assures data security and transparency throughout the entire lifecycle of your system. Perfectly tailored fit Individually configurable devices provide you with cost-effective solutions that match your needs precisely throughout the entire lifecycle. SIPROTEC 5 sets new standards in cost savings and availability with its innovative modular and flexible hardware, software and communication. SIPROTEC 5 provides a perfectly tailored fit for your switchgear and applications unparalleled by any other system. Operation Documentation Testing Maintenance Commissioning Test Documentation Fig../ Holistic Workflow End-to-end tools from design to operation Design Application Specification Implementation Device selection Planning Engineering Settings SIP5-000.EN.ai Fig../ SIPROTEC 5 innovation highlights SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

8 Innovation Highlights Perfectly tailored fit with SIPROTEC 5 means: Modular system design in hardware, software and communication ensures the perfect fit for your needs Functional integration of a wide range of applications, such as protection, control, measurement, power quality or fault recording The same expansion and communication modules for all devices in the family Innovative terminal technology ensures easy assembly and interchangeability with the highest possible degree of safety Identical functions and consistent interfaces throughout the entire system family mean less training requirement and increased safety, e.g., an identical automatic reclosing (AR) for line protection devices 7SD8, 7SA8, 7SL8 Functions can be individually customized by editing for your specific requirements Innovations are made available to all devices at the same time and can easily be retrofitted as needed via libraries. For you, perfectly tailored fit with SIPROTEC 5 means: Individually configurable devices save you money in the initial investment, spare parts storage, maintenance, extending and adapting your system. Designed to communicate The trendsetting system architecture places communication firmly under your control. Powerful, flexible, and above all reliable communication is the most important prerequisite for distributed and decentralized systems such as smart grids. In the system architecture of SIPROTEC 5 we have placed immense importance on communication, and we have gone to exceptional lengths to ensure that you are ideally equipped for the communication demands of today and the future. Designed to communicate with SIPROTEC 5 means: Adaptation to the topology of your communication structure using settings (ring, star, network, ) Scalable redundancy in hardware and software (protocols) to match your requirements Multiple communication channels with various higher-level systems Pluggable, upgradable communication modules Hardware modules decoupled from communication protocols independent protocols on one module Extensive routines for testing connections, functions and operating workflows. For you, designed to communicate in SIPROTEC 5 means: Communication as an integral component of the system architecture provides you with the flexibility and safeguards you need to design and implement highly operable and reliable networked systems. Safety and security inside Multilayer safety mechanisms in all links of the system safety chain provide you with the highest possible level of safety and availability. Safety for personnel and equipment, and also ultimate availability, are all the top priorities. As the plant landscape systems become more open and complex, the conventional security mechanisms are no longer adequate. For this reason, a security concept has been integrated in the SIPROTEC 5 device architecture that is designed to address these multidimensional aspects in a holistic approach Fig../ SIPROTEC 5 device with extensive communication interfaces./ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

9 Innovation Highlights Safety and security inside with SIPROTEC 5 means: Proven functions for protecting systems and personnel, continuously developed over five generations Long-lasting, rugged hardware (housings, assemblies, plugs) and sophisticated layout of the entire electronics for highest resilience against voltage, EMC, climate and mechanical stress Sophisticated self-monitoring routines identify and report device malfunctions immediately and reliably Conformance with the stringent Cyber Security requirements according to the user guidelines and standards such as the BDEW Whitepaper and NERC CIP Encryption along the entire communication segment between DIGSI 5 and the device, conforming to the recommendations of IEC 65 Automatic recording of access attempts and security-critical operations on the devices and systems. For you, safety and security inside with SIPROTEC 5 means: With the multilayer safety mechanisms integrated in SIPROTEC 5, your equipment and systems will have the highest possible degree of security and reliability, conforming to the most recent requirements of international standards and technologies. Smart automation for transmission grids The extraordinary range of integrated functionalities for all the demands of your smart grid. Climate change and dwindling fossil fuels are forcing a total re-evaluation of the energy supply industry, from generation to distribution and consumption. This is having fundamental effects on the structure and operation of the power grids. Smart automation is a major real-time component designed to preserve the stability of these grids and at the same time conserve energy and reduce costs. With SIPROTEC 5, you have the optimum smart automation platform for your smart grids. Smart automation for transmission grids with SIPROTEC 5 means: Open, scalable architecture for IT integration and new functions The latest standards in the area of communication and Cyber Security Smart functions, e.g., for network operation, analysis of faults or power quality (power systems monitoring, power control unit, fault location) Integrated automation with optimized logic modules based on the IEC 6- standard Highly precise acquisition and processing of process values and transmission to other components in the smart grid Protection, automation and monitoring in the smart grid. For you, smart automation for transmission grids with SIPROTEC 5 means: This is the first device that has been designed specifically to meet the requirements of the modern grid and offers the automation platform and future compatibility for smart grid projects. The common features of all five innovation highlights described are IEC 6850 Edition and its thoroughly designed, user-oriented implementation in SIPROTEC Fig../4 SIPROTEC 5 as a system component of the smart grid SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

10 Innovation Highlights IEC 6850 Simply usable Siemens, the pioneer of IEC 6850 makes the full potential of this global standard simply usable for you. The IEC 6850 standard is more than just a substation automation protocol. It comprehensively defines data types, functions and communication in station networks. In Edition, the influence of the standard is extended to more sectors and applications of the energy supply industry. Siemens was actively involved in the process of standardization from Edition to Edition, and with the largest number of completed installations in the world, our experience as a manufacturer in the field is unsurpassed. Jointly with key customers, we designed its implementation in SIPROTEC 5, paying close attention to interoperability, flexibility and compatibility between Editions and. Besides IEC 6850, SIPROTEC 5 also supports other standards such as IEC , IEC or DNP (seriell or TCP). Meet the standard IEC 6850 IEC 6850 Simply usable with SIPROTEC 5 means: Siemens is the pioneer and leading proponent of IEC 6850 Full compatibility with Edition Open interfaces in accordance with IEC 6850 guarantee manufacturer-independent system configuration and interoperation Highly usable presentation of the complex IEC 6850 data model Integrated, consistent system and device engineering from the single line diagram of the unit all the way to device parameterization Assurance of mapping consistency between IEC 6850 and the device functions Flexible object modeling freedom in addressing objects and flexible communication services assure the highest possible degree of interoperability and effective exchange and expansion concepts Optimization of handling based on many projects and close cooperation with customers from all application areas. For you, IEC 6850 simply usable with SIPROTEC 5 means: The implementation of IEC 6850 Edition unleashes the full potential of this standard by optimally supporting your operational needs and simplifying handling Fig../5 ICE 6850 Certificat Edition./4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

11 Functional Integration Perfectly tailored fit Due to the modular construction of their hardware and software, and their functional integration, SIPROTEC 5 devices are well suited for all tasks in the electricity transmission and distribution grid. Functional integration Due to the modular design of its hardware and software and the powerful engineering tool DIGSI 5, SIPROTEC 5 is ideally suited for protection, automation, measurement and monitoring tasks in the electrical power systems. The devices are not only pure protection and control equipment, their performance enables them to assure functional integration of desired depth and scope. For example, they can also serve to perform monitoring, phasor measurement, fault recording, a wide range of measurement functions and much more, concurrently, and they have been designed to facilitate future functionality expansion. SIPROTEC 5 provides an extensive, precise data acquisition and bay level recording for these functions. By combining device functionality with communication flexibility, SIPROTEC 5 has the ability to meet a wide range of today s applications and specific project specifications as well as the functional expansion capability to adapt to changing needs in the future. With SIPROTEC 5 you can improve the safety and reliability of your application. Fig../ shows the possible functional expansion of a SIPROTEC 5 device. Faster results with application templates Application templates allow you to fast track your solution. A library of application templates is available that can be tailored to the specific functional scope for typical applications. Fig../ shows an example of a system configuration. Note that the functions in the application template are combined in functional groups (FG). The functional groups (FG) correspond to the primary components (protection object: line; switching device: circuit breaker), thereby simplifying the direct reference to the actual system. For example, if your switchgear includes circuit breakers, this is also represented by circuit breaker functional groups a schematic map of your actual system. The SIPROTEC 5 devices can be used for the following applications: Protection Control and automation Monitoring Data acquisition and recording Communication and Cyber Security Test 5 Optimizing the application template for your specific application SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and recording Communication Cyber Security Test Fig../ Possible functional expansion of SIPROTEC 5 devices You can adapt the application templates to your application and create your own in-house standards. The required number of protection stages or zones can be increased without difficulty. Additional functions can be loaded into the device directly from an extensive function library. Since the functions conform to a common design structure throughout the SIPROTEC 5 system, protection functions and even entire function groups including parameterization can be copied from one device to another. SIP EN.ai SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition. /

12 Functional Integration Perfectly tailored fit Protection. 5 A-QA I-ph FG Transformer side I-ph 49 Measured values 87N FG Circuit breaker A-QA I-ph 50BF Ctrl CB BI BO.6.7 I-ph FG Transf. neutral point I-ph 50N 5N FG Transformer 87.8 Measured values B-QA I-ph FG Transformer side I-ph 50 Measured values 5 FG Circuit breaker B-QA I-ph 50BF Ctrl CB BI BO..4 FG BI BO QA/CB Ctrl Function group Measuring point Binary input Binary output Circuit breaker Control 49 50BF 50/5 50N/5N 87 87N Overload protection Circuit-breaker failure protection Overcurrent protection Overcurrent protection, ground Differential protection Ground-fault differential protection Fig../ Protection of a transformer Instrument and protection-class current transformer The flexibility of the SIPROTEC 5 family enables even greater functional integration and parallel processing of an extremely wide range of functions. The modular hardware enables an application-specific device configuration. If you also want to use the phasor measurement function, i.e., the highly precise acquisition of current and voltage phasors and the variables derived from them such as power and frequency, this function can be assigned to the measuring input. Another additional application is monitoring power quality characteristics. Fig../ shows the connection to a protection-class and instrument current transformer for a feeder. The necessary protection functions are assigned to the protection-class current transformer and the measurement functions are assigned to the instrument transformer according to the application. The highly precise measured values and status information provided by the SIPROTEC 5 devices can be transmitted over the high-performance communication system to automation systems such as a substation and power systems control or central analysis systems (e.g., SIGUARD PDP). In particular, the control and monitoring of smart grids require information from power generators (conventional or renewable energies) and from consumers (line branches). This essential information may be measured values, switching statuses, or messages from protection and monitoring functions. In addition to performing local protection, control and monitoring tasks, the SIPROTEC 5 devices are an excellent data source. The flexible communication among the devices enables them to be combined in various communication topologies. In this context, the widely used Ethernet-based communications standard IEC 6850 offers many advantages. 0. FS0 0 P5 Fig../ 5 SIPROTEC 5 I ABC,N I ABC,N V ABC V N Measuring functions (I, V, f, P, Q, cos φ; Phasor Measurement, Power Quality) Protection functions Connection of field devices to instrument and protection-class current transformers SIP5-007.EN.ai./ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

13 Functional Integration Perfectly tailoired fit Protection Protection SIPROTEC 5 provides all the necessary protection functions to address reliability and security of power transmission systems. System configurations with multiple busbars and breaker-and-ahalf schemes are both supported. The functions are based on decades of experience in putting systems into operation, including feedback and suggestions from our customers. The modular, functional structure of SIPROTEC 5 allows exceptional flexibility and enables the creation of a protection functionality that is specific to the conditions of the system while also being capable of further changes in the future. In the following segment available device functions of SIPROTEC 5 will be described. 5 SIPROTEC 5 Control Automation Monitoring Data acquisition and Recording Communication.9 Fig../4 Cyber Security Test Possible functional expansion of SIPROTEC 5 devices SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition. /

14 Functional Integration Description of the device functions Distance protection (ANSI, N) SIPROTEC 5 provides 6-system distance protection featuring all well-proven algorithms of previously supplied SIPROTEC protection devices. By parallel calculation and monitoring of all six impedance loops, a high degree of sensitivity and selectivity is achieved for all types of faults. All methods of neutral-point treatment (compensated, isolated, solid or low-resistive grounded) are reliably dealt with. -pole and -pole tripping is possible depending on the specific device type. The distance protection is suitable for cables and overhead lines with or without series capacitor compensation. The device provides quadrilateral as well as MHO. The characteristics can be used separately for phase and ground faults. Resistance ground faults can, for instance, be covered with the quadrilateral characteristic and phase faults with the MHO characteristic. The evaluation of healthy voltages and the use of a voltage memory make optimal direction determination possible. Zone characteristic quadrilateral The quadrilateral characteristic permits separate setting of the reactance X and the resistance R. The resistance section R can be set separately for faults with and without earth involvement. This characteristic has therefore an optimal performance for detecting high-resistive faults. Applications with ground fault dependent reactance reach per zone can be covered as well by simply using additional distance zones. Each distance zone can be set separately to operate for ground faults only, for phase faults only or for all fault types. The distance zones can be set forward, backward or nondirectional. Zone-characteristic MHO With the MHO characteristic, the MHO circle expansion guarantees safe and selective operation for all types of faults, even for faults close to the zone boundary. The circle expands to the source impedance but never more than the selected impedance reach. The example in the figure (Fig../5) shows the characteristic for a forward fault. Appropriate number of distance zones The number of distance zones can be freely adapted according to the application requirements. For functions using a dependent zone, such as signal comparison, all parameterized zones from the distance protection are available (application of the zone in distance protection itself is not affected by this). Each distance zone has its own timer, separately dedicated to -phase and -phase short circuits. Thus, the new flexibility of the SIPROTEC 5 device family provides optimal adaptation to each application. The distance protection will always provide the exact number of required distance zones..5.6 Reverse Forward X Line ZB Z Z Z X Line Z5 Z4 ZB Z Z.7.8 φ Line φ Dist φ Load R Load Load R.9.0 Forward.. Reverse SIP5 G-0005.EN.ai Z (reverse) SIP5 G-0006.EN.ai. Fig../5 Quadrilateral characteristics, with 4 zones as an example Fig../6 MHO zone characteristics, with 6 zone as an example /4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

15 Functional Integration Description of the device functions Four pickup methods The following pickup methods can be employed alternatively: Overcurrent pickup I >> Voltage-dependent overcurrent pickup V / I Voltage-dependent and phase angle dependent overcurrent pickup V / I / j Impedance pickup Z< Load zone In order to guarantee reliable discrimination between load operation and short-circuit especially on long, high loaded lines the relay is equipped with a selectable load encroachment characteristic. Impedances within this load encroachment characteristic prevent the distance zones from unwanted tripping. Absolute phase-selectivity The distance protection function incorporates a well-proven, highly sophisticated phase selection algorithm. The pickup of healthy loops is reliably eliminated to prevent the adverse influence of currents and voltages in the healthy loops. This phase selection algorithm achieves appropriate tripping decisions and correct distance measurement in a wide application range. Arrangements for breaker-and-a-half schemes When the cores of the two CT sets are connected in parallel (with suitable polarity), the resultant measured current will be the sum of the two currents flowing into the CTs. This sum-current corresponds to the current flowing into the feeder and is therefore used for the protection and other functions to represent the feeder current. This method is commonly used. SIPROTEC 5 devices provide sufficient measuring inputs to connect two or several sets of CTs separately to the device. In this case the summation is carried out in software internally. The distance protection function detects possible saturation of only one of the CTs and can thus prevent unwanted pickup in case of an external error with high through-fault current. Through the separately measured currents, separate circuit-breaker failure protection functions can be activated for both switches. Furthermore, the separately measured currents allow a fully adequate differential protection for the "end zone" between the current transformers upon disconnection of the feeder (see STUB differential protection ANSI 87 STUB). Parallel-line compensation The influence of wrong distance measurement due to parallel lines can be compensated by feeding the neutral-point current of the parallel line to the relay. Parallel line compensation can be used for distance protection as well as for fault location. Load compensation The distance protection function provides measures to compensate the load influence on the reach measurement. Elimination of interference signals Digital filters render the unit immune to signals contained in the measured values. In particular, the influence of DC components, capacitive voltage transformers and frequency changes is considerably reduced. A special method of measurement is employed in order to assure protection selectivity during saturation of the current transformers. Measuring-voltage failure detection Tripping of the distance protection is blocked automatically in the event of failure of the measuring voltage, thus preventing unwanted tripping. Distance protection is blocked if one of the voltage monitoring functions or the auxiliary contact of the voltage-transformer circuit-breaker operates and in this case the EMERGENCY protection can be activated (definite-time overcurrent protection). Overexcitation protection (ANSI 4) Overexcitation protection is used to detect impermissibly high induction in generators and transformers. This function protects these equipment from excessive thermal loads. The induction is detected indirectly by evaluation of the V/f ratio. An overvoltage results in excessive exciting currents and underfrequency results in higher magnetic reversal losses. There is a risk of overexcitation on disconnection from the power system if the voltage or frequency control in the rest of the system does not respond quickly enough or the power unbalance is too great. Within the function, no more than one stage with an inversetime, user-defined characteristic and two definite-time stages can be operated at the same time. Synchrocheck, synchronizing function (ANSI 5) When two partial networks are closed with a control command or -pole auto-reclosure of the circuit breaker, it must be ensured that the networks are synchronous with each other. For this purpose, synchronization functionalities are provided. The synchronization function can be used for synchronous networks (electrically connected, no frequency difference) and asynchronous networks (electrically separated, frequency difference exists). It has three modes: Synchrocheck (monitoring of voltage, frequency, and phase-angle difference) Switching of synchronous networks (check for same frequency, voltage and phase-angle difference, and for continuity over a time window) Switching of asynchronous networks (voltage and frequency difference, connection at the point of synchronization, taking the make-time of the circuit breaker into account). By evaluating the frequency difference, the function automatically switches between the modes for synchronous and asynchronous networks. The synchrocheck function can be used for pure monitoring without switching. The relevant variables used for synchronization are sensed via voltage transformers (positioned to the left and right of the circuit breaker). Depending on the available number of voltage transformer inputs, one or two synchronizing locations (circuit breakers) can be applied Several functions can be used per device for which up to two parameter sets (stages) can be applied for synchrochecks and up to six parameter sets (stages) can be applied for the synchronization. Thus, the device can react to different environmentalconditions of the network always with the right synchronization parameters SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./5

16 Functional Integration Description of the device functions Undervoltage protection (ANSI 7) The undervoltage protection monitors the permissible voltage range or protects equipment (plant parts and electrical machines) against consequential damage from undervoltage. It can be used in the network for decoupling or load shedding tasks. Various undervoltage protection functions are available. By default, two stages are preconfigured. Up to three identical stages are possible. The following functions are available: Undervoltage protection with -phase voltage Optionally, measurement of phase-to-phase voltages or RMS value phase-to-ground voltages Measuring methods: optionally, measurement of the fundamental component or of the effective value (True RMS). Undervoltage protection with positive-sequence voltage -pole short circuits or ground faults lead to an unbalanced voltage collapse. In comparison with phase-related measuring systems, these events influence the positive-sequence voltage minimally. This makes this function particularly suitable for the assessment of stability problems. Method of measurement: calculation of positive-sequence voltage from the measured phase-to-ground voltages. Undervoltage protection with any voltage Capture of any -phase undervoltage with -phase voltage measurement for special applications Measuring methods: optionally, measurement of the fundamental component or of the effective value (True RMS). Power protection (ANSI, 7) The power protection works -phase and detects exceedance or underrunning of the set effective power or reactive power thresholds (see Fig../7). Pre-defined power limits are monitored and corresponding warning alerts are issued. The power direction can be determined via angle measurement of the active power. Thus feeding back in the network or at electric machines can be detected. Idling machines (motors, generators) are detected and can be shut down via an indication. The power protection can be integrated into any automation solution, for example, to monitor very specific power limits (further logical processing in CFC). The power protection function comes with one factory-set stage each for the active and the reactive power. A maximum of four active power stages and four reactive power stages can be operated simultaneously in the function. The tripping stages are structured identically. Q 0 positive negative + α α Threshold value P Undervoltage-controlled reactive power protection (ANSI 7Q) The undervoltage-controlled reactive power protection protects the system for mains decoupling purposes. To prevent a voltage collapse in energy systems, the generating side, e.g. a generator, must be equipped with voltage and frequency protection devices. An undervoltage-controlled reactive power protection is required at the supply system connection point. It detects critical power system situations and ensures that the power generation facility is disconnected from the mains. Furthermore, it ensures that reconnection only takes place under stable power system conditions. The associated criteria can be parameterized. Q Threshold value + positive 0 negative SIP5 G-00.EN.ai. P...4 SIP5 G-00.EN.ai.5 Fig../7 Active-power and reactive-power characteristics.6.7./6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

17 Thresholds for exceedance or underrunning of the power lines can be defined. The combination of the different stages via CFC result in various applications. Application examples Detection of negative active power. In this case reversepower protection can be applied by using the CFC to link power protection outputs to the Direct trip function. Detection of capacitive reactive power. In the case of overvoltage being detected due to long lines under no-load conditions it is possible to select the lines where capacitive reactive power is measured. Undercurrent protection (ANSI 7) The undercurrent protection detects disappearing or sinking current flow. This may be caused by switching operations, e.g. of a higher-level circuit breaker, or by falling loads, e.g. idling pumps. In either situation, it may be required to open the local circuit breaker to avoid resulting damage. This is the task of the undercurrent protection. The function consists of an undercurrent stage with a definitetime delay. Up to two stages can be operated in parallel. Optionally, the auxiliary contacts of the local circuit breaker can be evaluated to avoid unwanted operation. Temperature supervision (ANSI 8) The temperatures (e.g. winding or oil temperatures) are acquired with an external temperature monitoring device. Typical sensors are Pt 00, Ni 00 and Ni 0. The temperatures are transmitted to the protection via serial interface or via Ethernet interface and the temperature monitoring function monitors whether they exceed set limits. There are two thresholds per temperature measuring point. The function is designed so that up to temperatures can be processed. The function also includes integrated broken-wire monitoring which sends alarms referring to the measuring points. Unbalanced-load protection (ANSI 46) The protection function evaluates the negative sequence current and prevents the thermal overload of the rotor of electric machines (generators, motors). The thermal behavior is emulated by the integrating procedure. The following relation is the basis of the protection function: I K = ( ) t I N, M Where K constant of the machine (5 s to 40 s) I negative sequence current I N,M nominal current of machine Additionally, the permanent additional unbalanced load is monitored and an alarm is transmitted with a delay if this load is exceeded. Functional Integration Description of the device functions Negative-sequence system overcurrent protection (ANSI 46) The protection function determines the negative sequence current out of phase currents. The negative sequence current can be referred to the object nominal current or to the positive sequence current (convenient for broken wire monitoring). With the transformer, the negative phase sequence current protection can be used as sensitive backup protection on the supply side for detecting low-current single-phase short circuit and double-phase faults. This application is well suited for detecting low voltage single-phase faults which do not generate high voltage zero sequence currents (e.g. vector group Dyn). With the negative-sequence system, various monitoring and protection tasks can be realized: Detection of or -phase short circuits in the network with a higher sensitivity than in classic overcurrent protection (Setting lower than the object nominal current) Detection of phase current interruptions in the primary system and in the current transformer secondary circuits Location of short circuits or reversals in the connections to the current transformers Indication of unbalanced conditions in the energy system Protection of electrical machines following asymmetrical loads that are caused by asymmetrical voltages or phase currents (for example through a defective fuse). The function comes factory-set with stage. A maximum of 6 stages can be operated simultaneously. If the device is equipped with the inrush-current detection function, the tripping stages can be stabilized against tripping due to transformer inrush currents. Directional negative-sequence protection with definitetime delay (ANSI 46, 67) This function serves as the reserve short-circuit protection for asymmetrical faults. With the negative-sequence system, various monitoring and protection tasks can be realized: Detection of or -phase short circuits in the network with a higher sensitivity than in classic overcurrent protection Detection of phase conductor interruptions in the primary system and in the current transformer secondary circuits Location of short circuits or reversals in the connections to the current transformers Indication of asymmetrical states in the energy system Protection of electrical machines following asymmetrical loads that are caused by asymmetrical voltages or conductor interruptions (for example through a defective fuse). The function comes factory-set with stage. A maximum of 6 stages can be operated simultaneously. If the device is equipped with the inrush-current detection function, the tripping stages can be stabilized against tripping due to transformer inrush currents SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./7

18 Functional Integration Description of the device functions Overvoltage protection functions (ANSI 59, 47, 59N) Overvoltages occur, for example, in long lines with little or no load. Another cause can be faults in the voltage regulation (controller faults, maloperation). The overvoltage protection monitors the permissible voltage range, protects equipment from subsequent damage through overvoltages and serves to decouple systems (e.g. wind energy infeeds). Various overvoltage protection functions are available. By default, two stages are preconfi gured. Up to three identical stages are possible. The following functions are available: Overvoltage protection with -phase voltage (ANSI 59) Optionally, measurement of phase-to-phase voltages or phase-to-ground voltages Method of measurement: optionally, measurement of the fundamental component or of the effective value (RMS value). Overvoltage protection with positive-sequence voltage (ANSI 59) Capturing symmetrical, stationary overvoltages with positive sequence voltage Method of measurement: calculation of positive-sequence voltage from the measured phase-to-ground voltages. Overvoltage protection with positive-sequence voltage and compounding in line protection devices (ANSI 59) By means of capacitive line impedances, stationary overvoltages at the opposite end of the line can arise (Ferranti effect). Method of measurement: The positive-sequence system of the voltage is calculated at the other end of the line by means of the local, measured voltages and current using the equivalent circuit of the line. Overvoltage protection with positive-sequence voltage (ANSI 47) Monitoring the power system and electric machines for voltage unbalance (negative sequence voltage) Method of measurement: calculation of negative-sequence voltage from the measured phase-to-ground voltages. Overvoltage protection with zero-sequence voltage/ residual voltage (ANSI 59N/64) Detection of ground faults in isolated or resonant-grounded systems and electric operational equipment (e.g. machines) Detection of the ground-faulted phase (optional) Measurement procedure: Measurement of the displacement voltage directly at the broken-delta winding or calculation of the zero-sequence voltage from the phase-to-ground voltages Measuring methods: Optionally, measurement of the fundamental component (standard or with especially strong attenuation of harmonics and transients) or of the RMS value. Overvoltage protection with any voltage (ANSI 59) Capture of any -phase overvoltage for special applications Measuring methods: Optionally, measurement of the fundamental component or of the effective value (RMS value). Starting-time supervision (ANSI 48) The starting-time supervision protects the motor against too long starting processes. In particular, rotor-critical high voltage motors can quickly be heated above their thermal limits when multiple start-ups occur in a short period of time. If start-ups are prolonged, e.g., in the event of excessive voltage drops when starting the motor, excessive load torques, or a locked rotor, the protection device initiates a trip signal. Fig../8 shows the thermal characteristic of the function. Different maximum starting times are taken into account depending on the cold or warm condition of the motor. _:55:0 P _:55:0 P Fig../8 Toperate Motor starting _:55:04 P Cold motor Warm motor Thermal characteristic of the starting-time supervision I/Irated, motor Thermal overload protection (ANSI 49) The thermal overload protection function protects equipment (overhead lines, cables, motors, generators and transformers) from thermal overstraining by monitoring the thermal conditions. The RMS value is determined per phase from the highly sampled measured current values (8 khz). All quantities which cause heating are taken into account through the wide frequency operating range. Stages A current and thermal alarm stage is provided for the thermal overload protection to initiate an alarm before tripping. The tripping time characteristics are exponential functions according to IEC The preload is considered in the operate time for overloads. Consideration of the ambient temperature The currently measured ambient temperature can be taken into account in the calculation of the overtemperature. This results in a more accurate determination of this overtemperature. If the ambient temperature is lower than the stipulated reference temperature, a larger thermal reserve results and the equipment can be put under greater strain. As the ambient temperature increases, the thermal reserve of the equipment is reduced../8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

19 Functional Integration Description of the device functions Hot spot calculation (ANSI 49H) The hot spot calculation function protects the transformer windings from thermal destruction by excessive load currents. Hot spot calculation takes account of the following standards IEC and IEEE C57.9 (0) and calculates three relevant variables for the protection function: Hot spot temperature Relative aging Load reserve until warning/alarm indication. These variables can be used to generate an alarm. The hot spot temperature can also trigger tripping. Calculation of the hot spot temperature depends on the upper transformer oil temperature, the cooling method, the load factor, the transformer dimension, the oil and winding time constant and a number of other factors according to IEC and IEEE C57.9 (0). The upper oil temperature is sensed via the temperature measuring points. Up to temperature measuring points can be transferred to the protection relay via an RTD box. One of these measuring points can be chosen for calculation of the hot spot temperature in the oil. The customer can set additionally required factors, such as type of cooling and dimension of the transformer, in the function. The relative aging is acquired cyclically and summated to form the total aging. Stator overload protection (ANSI 49S) The function of the thermal stator overload protection protects the motor against thermal overload by monitoring the thermal state of the stator. The thermal stator overload protection calculates the overtemperature from the measured phase currents according to a thermal single body model. The RMS value is determined per phase from the highly sampled measured current values (8 khz). All quantities which cause heating are taken into account through the wide frequency operating range. Stages A current and thermal alarm stage is provided for the thermal overload protection to initiate an alarm before tripping. The tripping time characteristics are exponential functions according to IEC The preload is considered in the tripping times/ operate time for overloads. Circuit-breaker failure protection (ANSI 50BF) The circuit-breaker failure protection is circuit-breaker-related in the function group circuit breaker. Each circuit breaker has to be provided with its own circuit-breaker failure protection. The circuit-breaker failure protection incorporates a two-stage design. If the fault current has not disappeared after a settable time, a retrip command or the busbar trip command will be generated. The correct circuit-breaker operation is monitored via current measurement and via additional circuit-breaker contacts. The current detection logic is phase-segregated and can therefore also be used in -pole tripping schemes. The circuit-breaker failure protection can be initiated by all integrated protection functions as well as by external devices via binary input signals or by serial communication with GOOSE message in IEC 6850 systems. To increase operational reliability, an external start can be applied with two binary inputs in parallel. For -pole and -pole starting separate delay times are available. For applications with two current transformers per feeder, e.g. breaker-and-a-half, ring bus or double circuit-breaker applications, the SIPROTEC 5 device can be configured with two independent circuit-breaker failure protection functions. External trip initiation Any signals from external protection and monitoring devices can be used for trip initiation. These signals can be included in the processing of indications and trip commands or for starting a fault record. The external trip initiation works like a protection function. This allows easy integration of mechanical protection devices (e.g. pressure or oil level monitors or Buchholz relays). The required number of external trip initiations can be selected depending on the application. High speed instantaneous overcurrent protection (ANSI 50HS) When a faulted line is switched on, undelayed tripping is possible. In the case of high fault currents this overcurrent protection with instantaneous tripping effects a very rapid tripping when switching on to faults. The function is factory-set with one stage. Within the function, a maximum of two stages can be operated at the same time. All stages are of identical design The actual switch-on detection takes place in the switching state detection. This is either directly activated when switching on manually, or automatically determined from the measured values (current, voltage) or by means of the circuit-breaker auxiliary contacts. The current stage must be set via the maximum through-flowing short-circuit current or the inrush current if used in the transformer application. End-fault protection (ANSI 50EF) Without special measures the installation location of the current transformer deter mines the measuring zone of the differential protection. If the circuit breaker is open, the zone between the current transformer and the circuit breaker can be optimally protected by the end-fault protection. A current detected with an open circuit breaker indicates a fault in the relevant zone. The fault can be cleared by tripping the surrounding circuit breakers. In conjunction with the busbar protection, the response to a fault depends on the installation location of the current transformer. In the case of busbar-side current transformers, immediate and selective tripping of the busbar section is performed. On line-side current transformers, the end-fault protection can cause tripping of the circuit breaker at the opposite end through a transmission facility SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./9

20 Functional Integration Description of the device functions Instantaneous tripping at switch-on to fault (SOTF) This function is available for applications where the overcurrent protection with rapid tripping (50HS) is insufficient or is not used at all. It also allows rapid tripping in the case of lower fault currents. The function has no own measuring function. It is linked at its input side with the pickup (measurement) of another protection function, e.g. the element of an overcurrent protection and it will trip if switched on to a short circuit. Typically, such protection levels are configured which trip with a delay themselves. The actual energization detection is made in the switching state detection. External trip initiation Any signal from an external or internal protection or supervision function can be coupled into the trip logic of the device by means of binary inputs or by serial communication. The trip command may be delayed. -pole tripping is available if device and circuit breaker are capable of -pole operation. Load-jam protection (ANSI 50L) The load-jam protection function is used to protect motors during sudden rotor blocking. Damage to drives, bearings and other mechanic motor components can be avoided or reduced by means of quick motor shutdown. Rotor blocking results in a current jump in the phases. The current jump is used as a distinguishing criterion by the function. The thermal overload protection can pickup as soon as the parameterized threshold values of the thermal replica are exceeded. The load-jam protection, however, is able to detect a locked rotor quicker and in this way to reduce possible damage to the motor and driven equipment. Overcurrent protection, phases and ground (ANSI 50/5, 50N/5N) The functions time-overcurrent protection for phases and ground sense short circuits in electrical equipment. The non-directional time-overcurrent protection is suitable as the primary protection for single-feed radial or open ring power systems. As backup or emergency time-overcurrent protection, it can be used alongside the primary protection, e.g. on lines and transformers. In the case of transformers, the preferred application is backup protection for power system components connected downstream. Two definite time-overcurrent protection stages (DTL stages) and one inverse time-overcurrent protection stage (IDMTL stage) are preconfigured. Further definite time-overcurrent protection stages and a stage with a user-defined characteristic can be configured within the function. For the inverse time-overcurrent protection stages, all common characteristics according to IEC and ANSI/IEEE are available, for example, see Fig../9. Apart from their characteristic, the stages of the time-overcurrent protection have an identical structure. They can be individually blocked via binary input or by other functions (e.g. inrush current detection, automatic reclosure, cold load pickup). Every stage can be restrained against over-response caused by transformer inrush currents Every stage can be used as an alarm stage (no trip signal) For the measuring method, measurement of the fundamental or the rms value can be selected. The ground function evaluates the calculated zero-sequence current (I0) or the measured ground current Dropout-delay times can be set individually. Fig../9 t [s] I / I-threshold value t = 0.4 T p [s] (I / I-threshold value) 0.0 T p [s] Overcurrent protection, single-phase (ANSI 50N/5N) In the case of transformers, the preferred application is backup protection for power system components connected to the grounded neutral winding. The neutral point current of the transformer is processed directly. Alternately, the function can also be used for differential high-impedance ground fault protection. A further application is tank protection on transformers installed on insulating mountings. The structure and scope of the protection function is identical to the time-overcurrent protection ground function (ANSI 50N/5N). Sentitive ground protection (ANSI 50 Ns/5Ns) The sensitive ground-current protection function detects ground currents in systems with isolated or resonant neutral. It can also be used for special applications which require a very sensitive current measurement. Pickup and trip signals can be stored in the separate ground fault buffer IEC characteristics of the type normal inverse SIP5 G-0008.EN.ai./0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

21 Intermittent ground-fault protection Intermittent (re-striking) faults occur due to insulation weaknesses in cables or as a result of water penetrating cable joints. Such faults either simply cease at some stage or develop into lasting short-circuits. During intermittent activity, however, star-point resistors in networks that are impedance-grounded may undergo thermal overloading. The normal ground-fault protection cannot reliably detect and interrupt the current pulses, some of which can be very brief. The selectivity required with intermittent ground-faults is achieved by summating the duration of the individual pulses and by triggering when a (settable) summed time is reached. The response threshold IIE > evaluates the r.m.s. value, referred to one systems period. Transformer inrush current detection If the device is used in a transformer feeder, high inrush currents can be expected when the transformer is switched on. These can reach many times the rated current and flow for several tens of milliseconds to several seconds, depending on the size and design of the transformer. The inrush current detection function detects the transformer energizing and generates a blocking signal for protection functions that would spuriously respond to the transformer inrush current. This enables these protection functions to be sensitive. To detect transformer energizing reliably, the function uses the "harmonic analysis" and "CWA methods" (current waveform analysis) measuring methods. The two methods work in parallel and combine the results with a logical OR. The result is a "-outof- decision," which increases the availability of the electrical installation. Inverse-time overcurrent protection (ANSI 5V) This function also comprises short-circuit and backup protection and is used for power system protection with current-dependent protection devices. IEC and ANSI characteristics can be selected (Table./). The current function can be controlled by evaluating the generator terminal voltage. The controlled version releases the sensitive set current stage. With the restraint version, the pickup value of the current is lowered linearly with decreasing voltage. The fuse failure monitor prevents unwanted operation. Available inverse-time characterictics Characteristics acc. to ANSI / IEEE IEEE IEC Inverse Moderately inverse Very inverse Extremely inverse Definite inverse Table. / Available inverse-time characteristics Functional Integration Description of the device functions Peak overvoltage protection for capacitors (ANSI 59C) The dielectric of a capacitor is stressed by the applied peak voltage. Excessive peak voltages can therefore destroy the dielectric. IEC and IEEE standards define for how long capacitors can withstand what overvoltages. The function calculates the peak voltage phase-selectively from the fundamental and the superimposed harmonics. The peak voltage is calculated from the phase currents by integration. The function provides various types of stage with different delay times: Stage with an inverse characteristic, according to IEC and IEEE standards Stage with a user-defined characteristic Stage with a definite-time characteristic Up to four stages of the type with a definite-time characteristic can be set up concurrently. Current-unbalance protection for capacitor banks (ANSI 60C) Capacitor banks are often implemented in "H-circuits" (see Fig../0). In such implementations, failure of a single capacitor element unbalances the capacitor bank and therefore results in a low unbalance current via the cross-connection. The function measures the unbalance current in the crossconnection phase-selectively. If a threshold value is exceeded, the function starts and trips after a delay time. To meet the requirements that even the smallest unbalance current, resulting from a defective capacitor element, must be detected, it is necessary to compensate for operational unbalance, which also results in unbalance currents. The function permits both static and dynamic compensation. The latter must be used if dynamic environmental influences such as temperature fluctuations are already causing relevant operational unbalances. Moreover, the measured unbalance can optionally be normalized with the current of the capacitor bank to ensure constant sensitivity even at different powers. Capacitor bank 5 QA Abb.. / 0 BB 7SJ85 FG Capacitor bank 50 50N C FG Circuit breaker QA 50BF Ctrl Protection of a capacitor bank in H-circuit 60C SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

22 Functional Integration Description of the device functions Measuring-voltage failure detection (ANSI 60FL) This function monitors the voltage transformer secondary circuits: Non-connnected transformers Pickup of the voltage transformer circuit-breaker (in the event of short circuits in the secondary circuit) Series faults in one or more measuring loops. All these events cause a voltage of 0 in the voltage-transformer secondary circuits, which can lead to failures of the protection functions. The following protection functions are automatically blocked in the case of a measuring-voltage failure: Distance protection Directional negative-sequence protection Ground-fault protection for high-resistance faults in grounded-neutral systems. Restart inhibit (ANSI 66) The restart inhibit prevents the motor from restarting if the permitted temperature limit would thus be exceeded. The rotor temperature of a motor is far below the permissible temperature limit during normal operation and also under increased load conditions. High starting currents required when starting the motor increase the risk of the rotor being thermally damaged rather the stator due to overheating. This is related to the short thermal constant of the rotor. To avoid tripping of the circuit breaker due to multiple motor start-up attempts, the restart of the motor has to be inhibited if it is obvious that the temperature limit of the rotor has been exceeded during a startup attempt (see Fig../). ΘRotor.0 0 IMot.start IMot.rated 0 ICB, open Maximum permissible rotor temperature ΘRotor,max (= 00 %) Restart limit Fig../ tequilib. Temperature curve on: Rotor bar upper edge Rotor bar lower edge Rotor temperature tequilib. tequilib. tmin.inhibit time Temperature curve of the rotor and repeated motor start-up Cooling with τl kτ running τl kτ standstill Directional overcurrent protection, phases and ground (ANSI 67, 67N) The functions directional time-overcurrent protection for phases and ground sense short circuits in electrical equipment. With directional time-overcurrent protection, the units can also be used in power systems in which not only the overcurrent criterion but also the direction of power flow to the fault location is a selectivity criterion, e.g. in single-feed parallel lines, in doublefeed lines, or in looped lines. t t Two definite time-overcurrent protection stages (DTL stages) and one inverse time-overcurrent protection stage (IDMTL stage) are preconfigured. Further definite time-overcurrent protection stages and one stage with a user-defined characteristic can be configured within the function. For the inverse time-overcurrent protection stages, all common characteristics according to IEC and ANSI/IEEE are available. The following figure shows how the direction characteristic of the ground function can be freely configured. The characteristic can be rotated for the phase function. Intermediate range Hysteresis range of Fig../ Vref,rot - Δφ Vref,rot - Δφ + Vref,rot Forward -Δφ -I0comp. -φrot _:04 φrot = P _:0 Δφ = P Vref +Δφ Reverse Vref,rot + Δφ - Vref,rot + Δφ = 45 = ±88 Direction characteristics of the extended ground function Apart from the characteristics, the stages have an identical structure. Blocking functions of the stage: on measuring voltage failure, via binary input signal, or by other functions (automatic reclosure, cold load pickup) Every stage can be restrained against over-response caused by transformer inrush currents The direction can be set for each stage The stage can optionally be used for directional comparison protection. Both a release and a blocking method can be implemented Each stage can be used as an alarm stage (no trip signal) For the measuring method, measurement of the fundamental or the rms value can be selected. The ground function evaluates the calculated zero-sequence current (I0) or the measured ground current Logarithmically inverse characteristics are also available for the ground stages../ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

23 Directional ground-fault protection with phase selector for high-resistance ground faults (ANSI 5G, 67G, 50G) In grounded systems, it may happen that the main protection sensitivity is not sufficient to detect high-resistance ground faults. The SIPROTEC 5 device therefore has protection functions for faults of this nature. Multiple stages The ground fault overcurrent protection can be used with 6 definite-time stages (DT) and one inverse-time stage (IDMTL). The following inverse-time characteristics are provided: Inverse acc. to IEC ANSI/IEEE inverse Logarithmic inverse V 0 -inverse S 0 -inverse. Appropriate direction decision modes The direction decision can be determined by the residual current I 0 and the zero sequence voltage V 0 or by the negative sequence components V and I. Using negative-sequence components can be advantageous in cases where the zero sequence voltage tends to be very low due to unfavorable zero sequence impedances. In addition or as an alternative to the directional determination with zero sequence voltage, the ground current of a grounded power transformer may also be used for polarization. Dual polarization applications can therefore be fulfilled. Alternatively, the direction can be determined by evaluation of zero sequence power. Each stage can be set in forward or reverse direction or both directions (non-directional). High sensitivity and stability The SIPROTEC 5 devices can be provided with a sensitive neutral (residual) current transformer input. This feature provides a measuring range for the ground current (fault current) from 5 ma to 00 A with a rated current of A and from 5 ma to 500 A with a nominal current of 5 A. Thus the ground-fault overcurrent protection can be applied with extreme sensitivity. The function is equipped with special digital filter algorithms, providing the elimination of higher harmonics. This feature is particularly important for low zero sequence fault currents which usually have a high content of rd and 5 th harmonics. Dynamic setting change Dynamic setting change of pickup values and delay time settings can be activated depending on the status of an auto-reclosure function. An instantaneous switch-on to fault is applicable for each stage. Phase selector The ground-fault protection is suitable for -phase and, optionally, for -phase tripping by means of a sophisticated phase selector. It may be blocked during the dead time of -pole autoreclose cycles or during pickup of a main protection function. Functional Integration Description of the device functions Directional sensitive ground-fault detection for isolated and resonant-grounded systems (ANSI 67Ns, ANSI 5Ns, 59N) The directional sensitive ground-fault detection function detects ground faults in isolated and resonant-grounded systems. It provides different function elements which can also be used parallelly. This allows adapting the function optimally to the system conditions, user philosophy and different fault characteristics: Overvoltage elements with zero sequence system/ displacement voltage The zero-sequence system voltage (displacement voltage) is assessed as to exceeding a threshold. In addition, the faulted phase can be determined when the phase-ground voltages are connected. Directional ground-current elements with direction determination using cos ϕ and sin ϕ measurement This is the classical wattmetric (cos ϕ, in the resonantgrounded system) or varmetric (sin ϕ, in the isolated system) measurement procedure for the directional detection of static ground faults. For determining the direction the part of the ground current which is perpendicular to the set directional characteristic (= axis of symmetry) is decisive (I0 dir. ), see Fig../. The element can be adapted to the system conditions with the corresponding setting (position of the directional characteristic). Very sensitive and exact measurements can be made in this way. Directional ground-current element with direction determination using ϕ (V,I) measurement This procedure can be used as an alternative to the cos ϕ or sin ϕ procedure if desired by the user philosophy. The direction is found by determining the phase angle between the angle-error compensated ground current and the rotated zero voltage V 0. In order to satisfy different network conditions and applications, the reference voltage can be rotated by an adjustable angle. This allows taking the vector of the rotated reference voltage close to the vector of the I0 com ground current. The result of the direction determination is highly reliable in this way (see Fig../). P > 0 Q < 0 I0active (capacitive) P < 0 Q < 0 Fig../ α α V0 Forward I0 dir. Backward I0reactive (resistive) α α I0 P > 0 Q > 0 P < 0 Q > 0 Parameter: _:09 P _:07 P _:0 P _:05 P _:06 P Direction determination cos ϕ-measurement = cos φ = 0.0 = 0.00 A =.0 =.0 Visio-DwCosPhi-405-enUS-0.pdf SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

24 Functional Integration Description of the device functions Ground-fault transient procedure This transient procedure works only during the first to periods after the fault ignition. It determines the direction by evaluating the active energy of the transient process. It is particularly suitable if direction information is required for faults which extinguish very fast (after 0.5 to few periods). This makes it suitable for use in parallel to the element with cos φ measurement. This procedure can also be used in meshed networks. It is also optimal for use at closed rings since circulating zero sequence are eliminated. With an additional logic the function can optionally switch off static faults. Non-directional ground-current element If required, a simple non-directional ground-current element can be configured. General High phase-angle accuracy is particularly important in resonantgrounded systems. The measured ground current is corrected for this purpose via the stored phase-angle fault characteristic of the cable-type current transformer (phase-angle fault as a function of the current). A special algorithm can detect the extinction of the fault fast. This detection allows blocking the directional groundcurrent stages whose direction determination is based on the phase-angle reference between zero-sequence current and zero-sequence voltage. The stability is increased in this way during the decaying process of the zero-sequence system in the resonant-grounded system. Pickup and trip signals can be stored in the separate ground fault buffer. SIP5 G-000.EN.ai Z out Z out Zone Zone X φ Power-swing blocking (ANSI 68) Dynamic transient incidents, for instance short-circuits, load fluctuations, auto-reclosures or switching operations can cause power swings in the transmission network. During power swings, large currents along with small voltages can cause unwanted tripping of distance protection devices. Z In Z In Z Pos. seq. Fig../5 Impedance zones for out-of-step protection R Counting with ingress Counting with X-Axis crossing Counting with egress.5 ia/a t/s ib/a t/s.7.8 ic/a t/s.9.0 va/v t/s. vb/v t/s.. vc/v t/s P/Power swing ØA 68 P/Power swing ØB 68 P/Power swing ØC t/s SIP5 G-0009.EN.ai.7 Fig../4 Power-swing detection during -pole open condition./4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

25 Functional Integration Description of the device functions The power-swing blocking function avoids uncontrolled tripping of the distance protection. Power swings can be detected under symmetrical load conditions as well as during -pole auto-reclose cycles (see Fig../4). No settings required The function requires no settings. The optimal computation is always obtained by automatic adaptation. During a power-swing blocking situation all swing properties are constantly supervised. A subsequent network fault is reliably detected and results in phase-selective reset of the distance protection blocking by the power-swing detection. Trip circuit supervision (ANSI 74TC) The circuit breaker coil including its feed lines is monitored with two binary inputs. An alarm will be generated if there is an interruption in the trip circuit. Out-of-step protection (ANSI 78) In electric power transmission systems electrical stability must be maintained at all times. If system conditions arise that threaten the stability measures must be taken to avoid an escalation. One such system is the out-of-step protection. The function can be applied as out-of-step protection or can be integrated into more complex systems for supervision and load control, i.e. system integrity protection systems (SIPS). The out-of-step function constantly evaluates the impedance trajectory of the positive sequence impedance. The response characteristic is defined by impedance zones in the R/X plane. Accumulators are incremented depending on the point at which the impedance trajectory enters or exits the associated impedance zone. Tripping or signaling occurs when the set accumulator limits are reached. The out-of-step protection provides up to four independent impedance zones which can be adjusted and tilted according to the requirements of stability in the power network. (see Fig../5). Automatic reclosing (ANSI 79) About 85% of the arc faults on overhead lines are extinguished automatically after being tripped by the protection. The overhead line can therefore be re-energized. Reclosure is performed by an automatic-reclosing function (AR). Each protection function can be configured to start or block the auto-reclosure function. Basic features and operating modes Tripping controlled start with action time or without action time Pickup controlled start with action time or without action time -pole auto-reclosing for all types of faults; different dead times are available depending on the type of fault Multiple-shot auto-reclosure Cooperation with external devices via binary inputs and outputs or via serial communication with GOOSE message in IEC 6850 systems Control of the integrated AR function by an external protection Cooperation with the internal or an external synchrocheck Monitoring of the circuit-breaker auxiliary contact Dynamic setting change of overcurrent protection elements, depending on the AR status. Two auto-reclosure (AR) functions For applications with two circuit breakers per feeder, e.g. breaker-and-a-half, ring bus or double circuit-breaker applications the devices can be configured to operate with two independent auto-reclosure functions. -pole auto-reclosure In electrical power systems with grounded system neutral-point and if the circuit-breaker pole can be operated individually, a -pole auto-reclosure is usually initiated for -phase short circuits. -pole auto-reclosure functionality is available in SIPROTEC 5 devices with -pole tripping capability. The following operating modes are provided in addition to the above mentioned features: -pole auto-reclosure for -phase short circuits, no reclosing for multi-phase faults -pole auto-reclosure for -phase faults and for -phase faults without ground, no reclosing for multi-phase short circuit -pole auto-reclosure for -phase fault and -pole autoreclosing for multi-phase faults -pole auto-reclosure for -phase faults and for -phase faults without ground and -pole auto-reclosure for other faults Appropriate evolving fault response -pole coupling (positive -pole tripping) in case of circuitbreaker pole discrepancy. Voltage-dependent supplementary functions The integration of auto-reclosure in the feeder protection allows evaluation of the line-side voltages. A number of voltagedependent supplementary functions are thus available: DLC By means of a dead-line check, reclosure is effected only when the line is de-energized (prevention of asynchronous circuit-breaker closure), if no synchrocheck can be used. ADT The adaptive dead time is employed only if auto-reclosure at the opposite end was successful (reduction of stress on equipment). RDT Reduced dead time is employed in conjunction with autoreclosure where no teleprotection is used: When faults within the overreach zone, but external to the protected line, are switched off for short-time interruption, the RDT function decides on the basis of measurement of the reverse polarity voltage from the opposite end, which has not tripped, whether or not to reduce the dead time SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./5

26 Functional Integration Description of the device functions Frequency protection (ANSI 8O, 8U) Frequency deviations are caused by an unbalance between generated and consumed the active power. Causes are, for example, load shedding, network disconnections, increased need for active power, generator failures or faulty functioning of the power and frequency regulation. The frequency protection detects frequency deviations in the network or in electric machines. It monitors the frequency band and outputs failure indications. In case of critical power frequency entire generation blocks can be isolated or networks can be decoupled. To ensure network stability, load shedding can be initiated. Different frequency measuring elements with high accuracy and short pickup times are available. Tripping by frequency measuring elements can be effected either at the local circuit breaker or at the opposite end by remote tripping. The following measuring elements are available: Overfrequency protection (ANSI 8O) Two preconfigured stages, can be increased up to three stages. All stages are of identical design. Underfrequency protection (ANSI 8U) Three preconfigured stages, can be increased up to five stages. All stages are of identical design. The following frequency measurement procedures are available for selection: Angle difference method: Angle change of the voltage phasor over a time interval Filter method of measurement: Evaluation of immediate voltage values with special filters. For all measuring methods the specific protection functions are provided in the DIGSI 5-library. Rate-of-frequency-change protection (ANSI 8R) Frequency changes can be detected quickly with the rate-offrequency-change protection. The function is able to prevent unsafe states of the system caused by unbalance between generated and consumed active power. It is therefore used in power system disconnection and load shedding measures. The function provides two types of stages: df/dt rising df/dt falling Of each type of stage, up to five stages can be set up in the function. By defining the measurement window length, either the measuring accuracy or the starting time can be optimized for the specific application. On undervoltages, the function is automatically blocked to exclude imprecise or incorrect measurements. Tele (pilot) protection for distance protection (ANSI 85/) A teleprotection function is available for fast clearance of faults up to 00% of the line length. For conventional signal transmission the required send and receive signals can be freely assigned to binary inputs and outputs. The signals can certainly be transferred via the serial protection interface, a SIPROTEC 5-wide system feature. The transmission via GOOSE messages with IEC 6850 system interfaces is provided as well, if the available communication structures in the substations fulfill the intra-substation requirements acc. to IEC The following teleprotection schemes are provided for distance protection: Permissive underreach schemes PUTT Pickup with expansion of measuring range Acceleration with pickup Direct underreaching trip Permissive overreach schemes POTT With overreach zone Directional comparison pickup Unblocking Each permissive scheme can be extended with an unblocking logic Blocking Reverse interlocking Transmission link protection The send and receive signals are available as general signals or as phase-selective signals. The phase-selective signals are particularly advantageous as they guarantee reliable -pole tripping, if -phase short circuits occur on different lines. The teleprotection schemes are suitable also for power lines with more than two line-ends, e.g. teed feeder. Up to six line-ends are possible. Transient blocking (current reversal guard) is provided for all permissive and blocking schemes in order to suppress interference signals during tripping of parallel lines../6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

27 Functional Integration Description of the device functions Weak or no infeed: Echo and tripping (ANSI 85/7) To prevent delayed tripping of distance protection permissive schemes and ground-fault directional comparison scheme during weak or zero infeed situations, an echo function is provided. If no fault detector is picked up at the weak-infeed end of the line, the signal received here is returned as echo to allow accelerated tripping at the strong infeed end of the line. It is also possible to initiate phase-selective tripping at the weak-infeed end. A phase-selective -pole or -pole trip is issued if a send signal is received and if the measured voltage drops correspondingly. This feature is available for all permissive underreach and overreach schemes. As an option, the weak infeed logic can be equipped according to a French specification. Teleprotection for directional ground-fault protection (ANSI 85/67N) For fast clearance of faults up to 00% of the line length the directional ground-fault protection can be expanded with a teleprotection scheme. The following schemes are available: Directional comparison Blocking Unblocking The send and receive signals are available as general signals or as phase-selective signals in combination with the phase selector of the directional ground-fault protection. For conventional signal transmission the send and receive signals can be freely assigned to binary inputs and outputs. The signals can certainly be transferred via the serial protection data interface, a SIPROTEC 5-wide system feature. The transmission via GOOSE messages with IEC 6850-system interfaces is provided as well, if the available communication structures in the substations fulfill the intra-substation requirements according to IEC The transient blocking (current reversal guard) function can be enabled in order to suppress the interference signals during tripping of parallel lines. Communication of the teleprotection functions for distance protection and ground-fault protection can use the same signaling channel or separate and redundant channels. Line differential protection (ANSI 87L, 87T) Line differential protection is a selective short-circuit protection for overhead lines, cables, and busbars with single-side and multi-side infeed in radial, looped, or meshed systems. It can be used at all voltage levels. Line differential protection works strictly phase-selectively and allows instantaneous tripping of - or -phase short circuits at up to six line ends. Depending on the device variation -/-pole (7SD87/7SL87) or only -pole tripping (7SD84/7SD86/7SL86) is possible. The devices in a differential protection topology communicate with each other via protection interfaces (protection-data communication). The flexible use of available communication media saves investment in communication infrastructure and guarantees the protection of lines of all lengths. Adaptive measurement An adaptive measurement method ensures a maximum of sensitivity to detect internal faults under all conditions. To guarantee highest stability any measurement and communication errors are taken into account (see Fig../6). Simple settings and supervision features shorten time of engineering and commissioning. A sensitive measurement stage (I Diff >) offers the detection of high resistive faults. Special algorithms guarantee high stability even with high-level DC components in the shortcircuit current. A high-set differential stage (I Diff >>) offers high-speed fault clearance with very short tripping times. Different CT ratios at the line ends are handled inside the relay. No external matching transformers are needed. With the setting of CT-error data the differential protection device automatically calculates the restraint current and adapts its permissible sensitivity according to the CT s data. Thus no protection characteristic has to be parameterized. Only I Diff > (sensitive stage) and I Diff >> (high-set current differential stage) must be set according to the charging current of the line/cable. Enhanced communication features guarantee stability and accuracy even under disturbed or interrupted communication on all kinds of media like optical fibers, pilot wires or communication networks. Differential and restraint currents are monitored continuously during normal operation and are displayed as operational measurements. High stability during external faults even with different current transformer saturation levels. When long lines or cables get switched on, transient charging currents load the line. To avoid higher settings and less sensitivity of the I Diff >> stage, the set point may be increased I Diff > for a settable time. This offers higher sensitivity under normalload conditions. Charging current compensation Particularly long cables and very high-voltage lines can cause considerable, permanently flowing capacitive load currents. These must be considered via the trip threshold of the sensitive differential protection stages because they produce a differential current. The charging current compensation serves to improve the sensitivity so that maximum sensitivity can be protected even at high charging currents. Charging current compensation requires that local voltage transformers are connected. The principle of distributed compensation guarantees maximum availability, since with local failure of measuring voltages of a device, the remaining devices continue to guarantee their part of the compensation SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./7

28 Functional Integration Description of the device functions Fig../6 I Diff I N, Operation I Diff > Differential current Trigger characteristic Tripping range Transformer in the protection range Stabilization range Adaptive stabilization I Stabilization I N, Operation Apart from normal lines, line differential protection can also protect lines with a transformer in block connection. The current transformers selectively delimit the protection range. A separate transformer protection device can therefore be omitted, since line differential protection acts as a transformer protection with measuring points that may lie far away from one another. With few additional transformer parameters such as rated apparent power, primary voltages, vector groups and any neutral-point groundings of the respective windings, there is no need for external matching transformers. The sensitivity of differential protection can be further increased by capturing the earth currents of grounded neutralpoint windings. The inrush current detectionstabilizes the differential protection against tripping due to transformer inrush currents. This can occur phase-selectively or in -phase by means of the crossblock function. Breaker-and-a-half schemes Differential protection can be integrated easily into breaker-anda-half schemes. With corresponding hardware extension (see standard variants), two -phase current inputs per device are configurable. Thus ultimately topologies of up to measurement points with 6 devices can be configured. The protection of a STUB-BUS can be assumed by the separate STUB differential protection. SIP5 G-000.EN.ai Improved communication features The line differential protection uses the protection interfaces in the Differential protection configuration (Type, see Protection-data communication). Different communication modules and external converters allow the interfacing and use of all available communication media. Direct fiber-optic data transmission is immune to electromagnetic interference and offers highest performance. Using the external communication converters via existing pilot wires or communication networks is possible. The data required for the differential calculations is cyclically exchanged in full-duplex mode in the form of synchronous, serial telegrams between the protection units. Enhanced supervision features ensure stability in operation in any communication environment: Telegrams are secured with CRC check sums to detect transmission errors. Only valid telegrams get operated by the differential protection. Supervision of all communication paths between the units without additional equipment. Unambiguous identification of each unit is ensured by the assignment of settable communication addresses for each unit within a differential protection topology. Detection of reflected telegrams in the communication networks. Detection of time delay changes in the communication networks. Dynamic compensation of delay time in the differential measurement and supervision of the maximum permissible signal-transit time. Generation of alarms on disturbed communication connection. Faulty telegram counters are available as operational measurement. Switched communication networks can lead to unsymmetrical delay times in receive and transmit directions. The resulting differential current is compensated by the adaptive measuring techniques of the differential protection. With a high-precision s pulse from a GPS receiver the relays can be synchronized with an absolute, exact time at each line end. In this way, delay times in receive and transmit path can be measured exactly. Thus the differential protection can be used in communication networks with a maximum of sensitivity even under massive unsymmetrical delay conditions../8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

29 Functional Integration Description of the device functions Fig../7 Ring topology Device / 7SD8 I Device / 7SD8 Chain topology Device / 7SD8 I I Device 7SD8 Device 7SD8 Differential protection in ring topology SIP5 G-0004a.EN.ai Communication topologies/modes of operation Differential protection devices may work in a ring or chain line topology. The use of a test mode offers operating conditions and maintenance. The system tolerates the loss of one data connection in a ring topology. The ring topology is rerouted within 0 ms into a chain topology, while the differential protection function is still working. When a chain topology is given by the communication infrastructure, cost effective relays with only one active interface are necessary at the chain ends. For important two-end lines a hot standby transmission is possible by a redundant communication connection to ensure high availability. When the main connection is interrupted, the communication switches over from the main path to a secondary path. For service or maintenance reasons individual differential protection devices within multi-end topologies can be logged out by a signal via binary input. Circuit-breaker positions and load currents get checked before a logoff is initiated. The remaining devices are able to operate in this reduced topology. The whole configuration can be set up into a test mode. All functions and indications are available except the breakers will not trip. The local relay can be tested without tripping or intertripping at the other relays I + I I + I Fig../8 I + I I Device / 7SD8 Subtotal I + I Differential protection in chain topology I SIP5 G-00.EN.ai Connection to other devices Phase-selective circuit-breaker intertripping and remote trip/indications Normally the differential fault current is calculated for each line end nearly at the same time. This leads to fast and uniform tripping times. Under weak infeed conditions, especially when the differential protection function is combined with an overcurrent pickup a phase-selective breaker intertripping offers a tripping of all line ends. Therefore high-speed transfer-trip signals get transmitted to the other line ends. They can also be initiated by an external relay via binary inputs. Therefore they can be used to indicate, for example, a directional decision of the backup distance protection. Additional remote signals can be freely assigned to binary inputs and outputs and are circulating between the different devices (see Protection-data communication). STUB differential protection (ANSI 87 STUB) STUB differential protection is a full-fledged line differential protection, but without communication between the line ends. It is used with a teed feeder or a breaker-and-a-half scheme, when a feeder of the line section can no longer be selectively protected by opening the disconnector (example distance protection). The activation of the STUB differential protection occurs through the feedback of the disconnector position. The SIPROTEC 5 line protection device must be equipped with two -phase current inputs in its hardware for this. The STUB differential protection corresponds structurally and with regard to the setting parameters to the line differential protection (ANSI 87L) in all regards, with the exception of protection data communication. It guarantees the selective protection of the remaining line section and rapid tripping times up to 0 ms. Transformer differential protection (ANSI 87T) The transformer differential protection is a selective short-circuit protection for power transformers with different types of design (standard transformers and autotransformers) and different connection designs. The number of protectable windings (sides) and the number of usable measuring points depends on the device type (see above explanations) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./9

30 Functional Integration Description of the device functions The following properties are essential for the protection function:... Restraint tripping characteristic with freely settable characteristic sections in accordance with Fig../9 Integrated adaptation to the transformer ratio with different rated currents of the current transformer (primary and secondary) taken into account Idiff I/Irated Fault characteristic fed from one side _:04:0 P Flexible adaptation to the different transformer vector groups Adaptive adjustment of the trip characteristics by detection of the transformer tapping Additional consideration given to neutral point currents with grounded winding and thus increase of the sensitivity by one third Redundant stabilization procedure ( nd harmonic + curve wave analysis) to detect safely inrush procedures at the transformer Further stabilization options through the evaluation of the rd or 5 th harmonic in the differential current. The 5 th harmonic is suitable for detecting safely a steady-state overexitation of the transformer and thus for avoiding an overfunction Additional stabilization procedures against external faults with current transformer saturation. The first procedure responds to high-current faults and monitors the differential current curve (differential current detected outside the add-on stabilization characteristic for a limited time, see Fig../9). Changeover to an internal fault is safely detected. The second procedure works with low-current faults. Phase-angle shifts can occur in the secondary current due to the DC component in the short-circuit current and remanence of the current transformer. If jumps occur in the stabilization current and if DC components are detected in the differential current at the same time, the tripping characteristic is increased for a limited time. If asynchronous motors are connected to transformers, differential currents can occur due to the distorted transmission of the starting current. The start detection (jump in the stabilization current and DC component evaluation) will raise the tripping characteristic. _:04: P 0. _:04:0 P 0.67 Fig../9 _:07: P _:04:00 P Additional stabilization external fault Irest _:04:0 I/Irated P.5 _:04:8 P.0 Restrain tripping characterisitc of the function I diff Idiff 0. Irest High-power internal faults are detected safely and quickly with the high-current stage I Diff -fast (see Fig../0). In order to avoid an overfunction due to q-axis currents (e.g. use in one-and-a-half layout), the instantaneous values of the differential and stabilization current are evaluated. Internal and external faults are safely detected within a few milliseconds. Fig../0 Characteristics of the function I diff -fast p The protection function was adapted to the special conditions of the autotransformer in order to ensure the protection of autotransformers. The pure node point protection can be used as an additional sensitive protection of the autotransformer winding. The node point protection works parallel to the classical d ifferential protection. The autotransformer banks become highly sensitive to ground faults and interturn faults with it. Fig../ shows the basic idea. s t I-ph I-ph I-ph I-ph Node.4 87 Differential protection.5 87Node Differential protection auto transformer Measuring point.6.7 Fig../ Protection of an autotransformer through two differential protection in one device./0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

31 Functional Integration Description of the device functions Busbar differential protection (ANSI 87B) Busbar protection is selective, reliable, and fast protection against busbar short circuits in medium-voltage, high-voltage, and extra-high-voltage installations with the most varied busbar configurations. The protection is suitable for switchgear with closed-core or linear-characteristic current transformers. It short tripping time is especially advantageous with high shortcircuit powers or if the power system stability is at risk. The modular structure of the hardware enables the protection to be optimally adapted to the configuration of the installation. The protection function has the following features: Phase-selective measurement and display Selective tripping of defective busbar sections Additional disconnector-independent check zone as a further tripping criterion Shortest tripping times (<0ms) Excellent stability on external faults, even on instrument transformer saturation, by means of stabilization with through-fault currents Tripping characteristic with freely settable characteristic sections as shown in Fig../9 Sensitive tripping characteristic for low-current faults can additionally be activated, for example, in impedance-grounded systems as shown in Fig../0 Low requirements of the non-saturated time of the current transformers due to fast detection of internal or external faults within ms Three intermeshing measuring methods permit very short tripping times on busbar faults or ensure maximum stability during large through-fault currents The integrated circuit breaker failure protection detects failure of circuit breakers during busbar short circuits and provides a trip signal for the circuit breaker at the opposite end of the line. On failure of a bus coupling circuit breaker, the adjacent busbar is tripped. Differential ground-fault protection (ANSI 87N T) Ground faults close to the neutral of a grounded neutral winding can be detected by the longitudinal differential protection only to a limited extent. The ground-fault differential protection will support you here. The neutral point current and the calculated zero sequence of the phase currents are evaluated in accordance with Fig../. An overfunction in the case of external ground faults is avoided with special stabilization measures. The phase angles of the zero sequence are monitored in addition to the differential current and stabilization current based on the zero quantities. The tripping quantity is the zero sequence in the neutral point. When used in autotransformers an additional measure was taken to avoid malfunction in the case of external ground faults. The protection function determines independently the side of the autotransformer winding which is required for the safe operation of the protection function. The measuring point is selected which will lead to the highest stabilization current (see Fig../). This procedure is also used if there are several three-phase current measuring points at the star side, such as in breakerand-a-half layout (see also Fig../). Other protection functions are provided in the differential protection devices. These functions can be used as additional protection and monitoring functions and as backup protection for the upstream or downstream network. Monitoring of limit values is also possible. L L L Fig../ Abb../ IY 4 I0* = IY I 0* I Char IL IL IL M -T M External fault (M side) NP I Ang, REFM = >0, Δφ _M = 80 I Ang, REFM = <0, Δφ _M = 0 I REF, Trip = I Char + k * I Ang, REFM I0** = IL + IL + IL I0'' M I0'' M I0' SIPROTEC φ(i 0*;I 0**) Basic principle ground-fault differential protection Measuring point selection for several infeeds on the star side L L L SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

32 Functional Integration Description of the device functions Motor differential protection (ANSI 87M) Detects ground faults and multi-phase short circuits on motors Detects ground faults for the operation of motors on power systems with grounded neutral point Stable during startup procedures with current transformersaturation thanks to intelligent saturation methods Reliably trips on internal high-current faults due to an a dditional high-current stage. The motor differential protection is based on a current comparison (Kirchhoff's current law). The basic principle is that in a fault-free protected item the currents add up to zero. If a differential current occurs, this is a sure sign of a fault within the protected item. The difference is calculated by the current direction definition. The current direction toward the protected item is defined as positive. The current difference is obtained by vector addition of the currents. _:07: P Abb../5 Idiff Characteristic of the function Idiff fast Irest I I Fig../4 W I I Isc Protection object Idiff = I+I Load: Idiff = I+(-I) =0 Short circuit: Idiff = Isc+Isc Basic principle of the differential protection with sides as an example The protection function has the following features: Error-current-restrained tripping characteristic with freely settable characteristic sections as shown in Fig../5 Additional restraint methods against external faults with current transformer saturation. The first method responds to high-current faults and monitors the progression of the differential current (temporary departure of the differential current from the additional restraint range, see Fig../5). Transition to an internal fault is reliably detected. The second method works with low-current faults. In this case, phase angle displacement in the secondary current can occur due to the aperiodic component of the short-circuit current and the remanence of the current transformer. If sudden changes occur in the restraint current and aperiodic components are simultaneously detected in the differential current, the trip characteristic will increase for a limited time. On induction motors, differential currents can occur due to corrupted transmission of the starting current. The tripping characteristic is raised by start detection (sudden change in the restraint current and aperiodic component evaluation). High-current internal faults are reliably and quickly detected by the high-current stage Idiff (see Fig../6). To avoid unwanted operation due to transverse currents (e.g. use in one-and-a-half breaker switchgear), the instantaneous values of the differential and restraint current are evaluated. Internal and external faults are distinguished in just a few milliseconds. Fault locator (ANSI FL)./ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition Isc I I W I I _:04: P 0. _:04:0 P 0.67 Fig../6 Idiff I/Irated _:04:00 P Fault characteristic fed from one side _:04:0 P 0.7 Additional stabilization external fault Irest _:04:0 I/Irated P.5 _:04:8 P.0 Restraint tripping characteristic of the function Idiff Single-ended fault locator The integrated fault locator calculates the fault impedance and the distance-to-fault. The result is specified in ohms, miles, kilometers or in percent of the line length. Parallel line and load current compensation are also available. Double-ended fault locator * Due to the load current there is an angular displacement between the voltages of both line ends. This angle and possible differences in the source impedance angle cause the angular displacement between both line end currents. As a result, the voltage drop across RF (resistance of failure) is affected by this angle between the currents RF. The single ended measurement cannot compensate for this. As an option for a line with two ends, a fault locator function with measurement at both ends of the line is available. The full line model is considered. Thanks to this feature, measuring accuracy on long lines under high load conditions and high fault resistances is considerably increased. * in preparation 0.

33 Functional Integration Description of the device functions Region Region PDC PDC IEEE C7.8 Struct_WAM-en.pdf Fig../7 Connection of Phasor Measurement Units with two Phasor Data Concentrators (PDCs) SIGUARD PDP Phasor Measurement Unit (PMU) Phasor Measurement Units make a valuable contribution to dynamic monitoring of transient processes in energy supply systems. Contrary to the RMS values, phasor measurements are transmitted as continuous data stream with adjustable reporting rate. Additionally, current and voltage are measured and transmitted with their phase angles. Due to the high-precision time synchronization (via GPS), the measured values of different, widely separated substations can be compared, and it is possible to draw conclusions about the system condition and dynamic events such as power swings from the phase angles and dynamic curves. Via an own Ethernet module, the PMU function transmits its data by means of the standardized protocol IEEE C7.8. The analysis can be carried out with a Wide Area Monitoring System (Fig../7), for example SIGUARD PDP SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

34 Functional Integration Control Control SIPROTEC 5 includes all bay level control and monitoring functions that are required for efficient operation of the switchgear. For convenient local control, the large, freely configurable graphics display is available for control images. Frequent operations, such as starting of switching sequences or indication of the signal list can be initiated via one of the nine function keys. With key switches for the selection of local/remote and locked/unlocked, the required safety is guaranteed. The application templates supplied provide the full functionality that you need for your application. Protection and control functions access the same logical elements. From the point of view of the switching device, protection and control are treated with equal priority. The modern, scalable hardware can be optimized for the system conditions. You can simply put together the desired hardware quantity structure. For example, a single SIPROTEC 5 can be used to control and monitor an entire breaker-and-a-half scheme. A new level of quality in control is achieved with the application of communication standard IEC For example, binary information from the field can be processed and data (e.g., for interlocking across multiple fields) can be transmitted between the devices. Cross communications via GOOSE enables efficient solutions, since here the hardwired circuits are replaced with data telegrams. Fig../8 5 SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and Recording Communication Cyber Security Possible functional expansion of SIPROTEC 5 devices Control_us.pdf All devices have up to 4 switching objects (switches, disconnectors, grounding switches) via the base control package. Optionally, additional switching objects and switching sequence block can be activated (switching sequence function chart (CFC)) Transformer automatic voltage control (ANSI 9V) The voltage control function is used for control of power transformers (-winding transformers) and autotransformers with a motor driven load tap changer. The function provides automatic voltage control within a defined voltage range on the secondary side of the transformers or alternately at a remote load point (Z compensation) in the power system. The control principle is based on the fact that an up or down command to the tap changer causes a rise or fall in voltage, depending on the voltage change (Δ V) for each step The voltage control functions in each step and compares the measured actual voltage (V act ) with the defined target voltage (V target ). If the difference is greater than the set bandwidth (B), an up or down command is output to the tap changer after the defined delay (T) has elapsed... The voltage control function additionally monitors the current on the primary and secondary sides to block the controller in impermissible operating conditions (overcurrent/ undercurrent, overvoltage/ undervoltage, reverse power) /4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

35 Functional Integration Automation and monitoring Automation An integrated graphical automation function enables you to create logic diagrams clearly and simply. DIGSI 5 supports this with powerful logic modules based on the standard IEC 6-. All devices have a powerful base automation package. This makes it easy to provide specific functions for automating a switching cell or switchgear and substation. Depending on the requirements of the application the scope of the CFC (Continuous Function Chart) function chart can be expanded. The scope covered by the basic function chart is always available while the other packages are optional extras. Basic function chart (CFC) Arithmetic function chart (CFC) Switching sequence function chart (CFC). With the basic function chart (CFC) package you can graphically link all internal digital information, such as internal protection signals or operating states directly to the logic modules and process them in real time. To evaluate and process measured values, e.g. monitoring of thresholds, the arithmetic function chart (CFC) package must be purchased. The switching sequence function chart (CFC) package is used for the realization of derived switching sequences, e.g., diversions due to a change in the grid status. Example automation applications are: Interlocking checks Switching sequences (switching sequence function chart (CFC)) Indication derivations of switching actions Indications or alarms by processing available information Load shedding a feeder (arithmetic function chart (CFC) and switching sequence function chart (CFC)) Management of decentralized energy feeds System transfer depending on the grid status Automatic grid separations in the event of grid stability problems. Of course, SIPROTEC 5 provides a substation automation system such as SICAM PAS with all necessary information, thus ensuring consistent, integrated and efficient solutions for further automation. Fig../9 5 SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and Recording Communication Cyber Security Test Possible functional expansion of SIPROTEC 5 devices Automation-us.pdf Fig../0 5 SIPROTEC 5 Protection Control Automation Data acquisition and Recording Communication Cyber Security Test Possible functional expansion of SIPROTEC 5 devices Monitoring SIPROTEC 5 devices can take on a wide variety of monitoring tasks. These are divided into four groups: Self monitoring Monitoring grid stability Monitoring power quality Monitoring of equipment (condition monitoring). Self monitoring SIPROTEC 5 devices are equipped with many self-monitoring procedures. These procedures detect faults internal to the device as well as external faults in the secondary circuits and store them in buffers for recording and reporting. This stored information can then be used to help determine the cause of the self monitoring fault in order to take appropriate corrective actions. Grid stability Grid monitoring combines all of the monitoring systems that are necessary to assure grid stability during normal grid operation. SIPROTEC 5 provides all necessary functionalities, e.g., fault recorders, continuous recorders, fault locators and phasor measurement units (PMUs) for grid monitoring. The SIGUARD PDP Wide Area Monitoring System is available for analyzing and dis playing the synchrophasor measurement units. The grid moni toring functionality of SIPROTEC 5 devices allows them to be programmed to monitor grid limit violations (e.g., dynamic stability assessment via load angle control) and actively trigger the appropriate responses. This data in the grid control systems can also be used as input variables for online load flow calculation and enable significantly faster response if statuses in the grid change. Power quality Besides availability, the end consumers demand that the electrical energy they receive is also of high quality. The increasing use of power electronic components can have detrimental effects on power quality. Poor power quality can cause interruptions, production outages, and high follow-up costs. Accordingly, it is essential to capture and evaluate the grid variables reliably according to generally valid quality criteria as defined in the standard EN Monitoring-us.pdf SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition. /5

36 Functional Integration Monitoring, data acquisition and recording Monitoring (contin.) For this, SIPROTEC 5 provides corresponding power quality recorders e.g. SIPROTEC 7KE85. These can be used to detect weak points early so that appropriate corrective measures can be taken. The large volume of data is archived centrally and analyzed neatly with the SICAM PQS system. Equipment The monitoring of equipment (condition monitoring) is an important tool in asset management and operational support from which both the environment and the company can benefit. Equipment that typically requires monitoring includes for example: circuit breakers, transformers and gas compartments in gas-insulated switchgear (GIS). The measuring-transducer inputs (analog inputs) (0 ma to 0 ma) enable connection to various sensors and monitoring of non-electrical variables, such as for example gas pressure, gas density and temperature. Thus, SIPROTEC 5 enables a wide range of monitoring tasks to be carried out. SIPROTEC 5 provides the process interfaces, buffers, recorders and automation functions necessary for monitoring the system: Process values are stored together with a time stamp in the operational log The circuit-breaker statistics provide essential data for condition based maintenance Process variables (e.g., pressure, SF 6 loss, speed, temperature etc.) are monitored to ensure they remain within the limits via measurement transducers connected to the sensors Further measured values can be acquired or processed via external 0 ma or temperature measuring devices that are connected serially or via Ethernet. Data acquisition and recording The recorded and logged field data is comprehensive. It represents the image and history of the bay. It is also used by the functions in the SIPROTEC 5 device for monitoring, inter-bay and substation automation tasks. It therefore provides the basis for these functions now and in the future. Measurement and PMU A large number of measured values is derived from the input variables and presents a current image of the process. Depending on the device design, the following base measured values are available: Operational measured values Fundamental phasor and symmetrical components Protection-specific measured values, e.g., differential and restraint current for differential protection Mean values Minimum values and maximum values Energy measured values Statistical values Limiting values. Besides the base measured values, phasor-measured units (PMUs) can also be activated in the devices. Phasor measured Fig../ 5 SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and Recording Communication Cyber Security Test Possible functional expansion of SIPROTEC 5 devices values support a range of applications for monitoring grid stability. For this purpose, SIPROTEC 5 devices record the necessary PMU data. These are high-precision, time-stamped phasors, power frequency and the change in the power frequency. They can be transmitted to central analysis systems via the high-performance communication system. Measured values are per-unit quantity both in primary and secondary values, and also in reference values. These values are also made available to other applications, e.g., transferred to the systems control or for automation tasks. Standard devices can be supplied with up to 4 analog inputs. The fault recorder SIPROTEC 7KE85 or the busbar protection SIPROTEC 7SS85 supports up to 40 analog inputs. With version 5 the busbar protection supports up to 60 analog input. The analog inputs of the SIPROTEC 5 devices can be selected with a corresponding accuracy class and dynamic range suitable for connection to both protection and measurement cores. The innovative current terminal technology enables the secondary rated current to be changed via setting. The current transformer input can also be changed on site if for example a measurement instead of protection class CT input is required (exchange of CT terminal module). The following precisions are typical: Processing via the protection-input transformer: I Cl. 0.5 (0.5 % accuracy) P, Q Cl. ( % accuracy) Processing via the measuring-input transformer: I Cl. 0. (0. % accuracy) P, Q Cl. 0.5 (0.5 % accuracy) Data acqu-us.pdf./6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

37 Functional Integration Data acquisition and recording Separate measuring transducers (analog inputs) are therefore unnecessary. The highly precise measured data enables extended energy management and makes commissioning much easier. SIPROTEC 5 thus provides the following measured values for analysis and further processing: The base measured values with high dynamic range and high accuracy (protection-class current transformer) The base measured values with very high accuracy (instrument transformer) Phasor measurement with highly precise time stamping for subsequent task such as grid stability monitoring. Recorder In SIPROTEC 5, various data logs and recorders provide recording large volumes of data. They feature a large number of analog and binary inputs, and a high sampling frequency. An extremely wide range of records can be converted. Either continuously or as determined by various trigger criteria. Besides storing the data fail-safe on internal storage devices, SIPROTEC 5 devices can also transfer the data to central analysis systems. Consequently, you are able to monitor networks with regard to typical characteristics. Fault recorder The fault recording stores analog and binary traces during a fault event, e.g., in the event of phase or ground faults, and preserves the records, including high-precision time stamps for subsequent analysis. Calculated measured values, e.g., power or frequency can also be incorporated into the fault recording function. Analysis takes place after the data is read out from the device by DIGSI using SIGRA. Recorded data is archived to prevent data loss in the event of supply voltage failure. Analog and binary tracks for recording are freely configurable, and pre-trigger and seal-in times can be programmed within a very wide range. SIPROTEC 5 fault recording provides long recording times with outstanding accuracy. Recording of up to 4 analog channels Sampling frequencies programmable between khz and 8 khz High recording capacity for individual records of 0 s for 4 channels with 8 khz sampling frequency Storage capability for up to 8 fault records The recording duration for all records is limited by the available storage capacity of the device, and depends on the number of configured channels and sampling frequency. Example: Line protection with 8 analog channels (4 I, 4 V), Sampling frequency khz, 6 measured value channels and 0 binary channels: resulting recording capacity of the device about 890 s! Up to 00 freely configurable binary and 50 additional measured value tracks Due to the large number of up to 0 measured values, SIPROTEC 7SS85 has a differing recording duration The SIPROTEC 7KE85 fault and power quality recorder has yet more features: Extended trigger criteria: Gradient trigger (ΔM /Δt), binary trigger, network trigger Higher-frequency sampling of 6 khz for up to 40 analog channels You ll find the description for the fast scan recorder, slow scan recorder, continuous recorder and the trigger functions in the chapter.0 of the digital fault recoder SIPROTEC 7KE85. Time synchronization High-precision time synchronization of all devices is necessary to allow the recordings of digital fault recorders at different locations to be compared with each other. Hence, the time synchronization is an important property and must be performed with high accuracy. Especially the use of the Phasor Measurement Unit (PMU) requires precise time stamping. Time synchronization is implemented by either: DCF77 signal IRIG-B SNTP Substation automation protocol (e.g. IEC ) One-second pulse (for especially precise applications) IEEE 588 (in preparation) The recommended GPS time signal receiver (7XV5664-) from Meinberg (Fig../) synchronizes the internal time of all connected protection devices. The internal clock of the protection devices are updated using the respective telegram (IRIG-B, DCF77). Optical fiber can also be used to transmit time signals (telegrams or second intervals) without interference even over larger distances and in electromagnetically polluted environments. SIPROTEC 5 devices generally support redundant time synchronization. The time information can be provided by two external clocks. One functions as the primary time source. If it fails, switchover to the second (secondary) clock is performed. Longer recording duration due to internal mass storage. Fig../ SIPROTEC 5 device with IRIG-B or DCF77 time synchronization FO GPS RS GPS antenna Lightning protection Fiber-optic cable Global positioning system SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition GPS FO FO FO Out Out Out FO R Port A IRIG-B or DCF77 telegram FO R Sync. trans. 7XV5654 X 4 V to max. 6 B X Port G SIPROTEC 5 SIPROTEC 5 To sync. transforme or star coupler /7

38 Functional Integration Data acquisition and recording Event-log buffer Event-log buffers mark important events with a time stamp (accurate to ms) for subsequent analysis. The long recording length is achieved with large event-log buffers and separate buffers for different event categories. The events to be logged are freely configurable and for improved manageability. Configuration of user-specific event-log buffers for cyclical or event-driven recording is also supported. Convenient and thorough analysis Event-log buffers of different categories enable easier, targeted analysis. Changes to parameters and configuration data are recorded. Ease of maintenance Hardware and software are constantly monitored and irregularities are detected immediately. In this way, extremely high levels of security, reliability and availability are achieved at the same time. Important information about essential maintenance activities (e.g., battery supervision), hardware defects detected by internal monitoring or compatibility problems are recorded separately in the diagnostic buffer. All entries include specific instructions for taking action. Table./ provides an overview of typical operational logs. Operational log 000 indications Fault log 000 indications per fault User-specific log 00 indications Ground-fault log 00 indications per groundfault Logs of parameter setting history (cannot be erased) Communication buffer Security log (cannot be erased) Diagnostic buffer 00 indications 500 indications 500 indications 500 indications Cyclical recording of operational indications (e.g., control processes) Event-controlled recording of faults. Maximum of 8 faults can be stored. Maximum of 000 indications per fault can be recorded Option of cyclical or event-drive recording of user-defined signals Event-controlled recording of groundfaults. Maximum of 0 ground faults can be stored. Maximum of 00 indications per ground-fault can be recorded Recording of all parameter changes and configuration downloads Table./ Overview of typical operational logs Recording of status of all configured communication connections, such as e.g., faults that arise, testing and diagnostic operation and communication loads Recording of successful and unsuccessful access attempts to areas of the device with restricted access rights Recording and display of concrete instructions for action in case of necessary maintenance (e.g., battery monitoring), detected hardware defects or compatibility problems /8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

39 Functional Integration Communication and Cyber Security Communication SIPROTEC 5 devices are equipped with high-performance communication interfaces. These are integrated interfaces or interfaces that are extendable with plug-in modules to provide a high level of security and flexibility. There are various communication modules available. At the same time, the module is independent of the protocol used. This can be loaded according to the application. Particular importance was given to the realization of full communication redundancy: Multiple redundant communication interfaces Redundant, independent protocols with control center possible (e.g. IEC and IEC 6850) Full availability of the communication ring when the switching cell is enabled for servicing operations Redundant time synchronization (e.g. IRIG-B and SNTP) Ethernet redundany protocols RSTP, PRP and HSR. 5 SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and Recording Communication Cyber Security Test Communication-us.pdf Cyber Security A multi-level security concept for the device and DIGSI 5 provides the user with a high level of protection against communication attacks from the outside and conforms to the requirements of the BDEW Whitebook and NERC CIP. Authentication In general, secure authentication takes place between the device and DIGSI 5. This precludes another program from accessing the devices and reading or writing data there. Establishment of connection after password testing If the optional connection password has been activated for remote access, remote access via the Ethernet cannot take place until the password has been entered. Once the connection has been established, the user has only read access to the device. Access control with confirmation code Security prompts must be answered for security-critical actions, e.g., changing parameters, in order to obtain write access to the device. These prompts can be configured by the user, and may be different for different application areas. Accesses to areas of the device with restricted access rights are recorded. This makes it possible to track which groups had access to protected areas and when. Unsuccessful and unauthorized access attempts are also recorded and an alarm can be triggered by an independent telecontrol link. In addition, security-critical operations are recorded in the device. This logs are safeguarded against deletion. All files that can be loaded into the device via DIGSI 5 are signed. In this way, corruption from outside by viruses or trojans is reliably detected. Unused Ethernet services and the associated ports can be disabled in the device with DIGSI Fig../ Possible functional expansion of SIPROTEC 5 devices 5 SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and Recording Communication Cyber Security Test Cyber Sec-de.pdf... Fig../4 Possible functional expansion of SIPROTEC 5 devices SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition. /9

40 Functional Integration Test Test To shorten testing and commissioning times, extensive test and diagnostic functions are available to the user in DIGSI 5. These are combined in the DIGSI 5 Test Suite. The test spectrum includes, among other tests: Hardware and wiring test Function and protection-function test Simulation of digital signals and analog sequences by integrated test equipment De-bugging of function charts Circuit-breaker test and AR (automatic reclosing) test function Communication testing Loop test for active connections Protocol test. The engineering, including the device test, can therefore be done with one tool. A browser can be used for diagnostics of services and protocols on Ethernet modules. Via a module website these diagnostic data are available to the user in the network. Fig../5 5 SIPROTEC 5 Protection Control Automation Monitoring Data acquisition and Recording Communication Cyber Security Possible functional expansion of SIPROTEC 5 devices Test-de.pdf The modular, flexible structure of the hardware and software ensures perfectly customized solutions for all your requirements in the network. With SIPROTEC 5, you have flexibility throughout the entire product lifecycle, and your investment is thus protected../0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

41 Hardware Perfectly tailored fit Hardware building blocks The SIPROTEC 5 hardware building blocks offer a freely configurable device. You have the choice: Either you use a pre-configured device with a quantity structure already tailored to your application, or you build a device yourself from the extensive SIPROTEC 5 hardware building blocks to exactly fit your application. Flexible and modular With SIPROTEC 5, Siemens has also taken a new path with the design. Proven elements have been improved and innovative ideas have been added. When looking at the new devices, the modular structure is evident. In this way, the scope of the process data can be adapted flexibly to the requirements in the switchgear assembly. You can choose: Either you use a preconfigured device with a quantity structure already tailored to your application, or you build a device yourself from the extensive SIPROTEC 5 hardware building blocks to exactly fit your application. Pre-configured devices can be extended or adapted as needed. With the devices SIPROTEC 7xx85, 7xx86 and 7xx87 you can also combine different base and expansion modules, add communication modules and select an installation variant that fits the space you have available. The devices SIPROTEC 7xx8 and 7xx84 can not be extended with expansion modules. With this modular principle you can realize any quantity structures you desire. In this way, hardware that is tailored to the application can be selected. Fig..4/ shows a modular device consisting of a base module and 4 expansion modules. SIPROTEC 5: The advantage of modular building blocks The SIPROTEC 5 hardware module building blocks provides the cumulative experience of Siemens in digital protection devices and bay controllers. In addition, specific innovations were realized that make the application easier for you, e.g. recorder and PQ functionalities. The SIPROTEC 5 hardware building blocks offer: Durability and robustness Tailored hardware extension Robust housings Excellent EMC shielding in compliance with the most recent standards and IEC Extended temperature range 5 C to + 70 C / F to + 58 F. Modular principle Freely configurable and extendable devices Large process data range (up to 4 current and voltage transformers for protection applications and up to 40 for central busbar protection as well as more than 00 inputs and outputs for recording applications possible) Operation panel that is freely selectable for all device types (e.g. large or small display, with or without key switches, detached operation panel) Identical wiring of flush-mounting and surface-mounting housings. The flexible hardware building blocks offer you: Base modules and expansion modules, each with different I /O modules Various on-site operation panels A large number of modules for communication, measured value conversion and memory extension Fig..4/ SIPROTEC 5 device built in modules User-friendly operation panel Eight freely assignable function keys for frequently required operator control actions Separate control keys for switching commands Context-sensitive keys with labeling in the display Complete numeric keypad for simple entry of setting values and easy navigation in the menu Up to 80 LEDs for signaling, 6 of which are in two colors. Application-friendly design No opening of device necessary for installation and servicing Easy battery replacement on the back of the device Simple exchange of communication modules with plug-in technology Electronically settable (no jumpers) threshold for binary inputs Rated current ( A / 5 A) of current transformer inputs configurable electronically (no jumpers) Removable terminal blocks Pre-wiring of terminals is possible Simple replacement of current transformers, e.g. with sensitive ground current transformers if neutral grounding method is changed. Increased safety, since open current transformer circuits are no longer possible (safety CT plug) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/

42 Hardware Perfectly tailored fit Operation Hardware building blocks with a system SIPROTEC 5 offers a modular, freely configurable device design. This maximum flexibility is guaranteed by the SIPROTEC 5 modular system. This contains coordinated components which you can combine to configure your individual device: Base modules and expansion modules, each with different I/O board Various front operation panels, e.g. with large display A large number of modules for communication, measured value conversion and memory extension. With reference to SIPROTEC 5, the term device always designates all the basic, extension and plug-in modules as well the matching front panels combined together. A base module together with a front operation panel is already a standalone device in itself. In order to obtain additional functionality, and above all more connections for process integration, you can supplement a base module with expansion modules. Fig..4/ shows you a single line sample configuration with a base module and 4 expansion modules. Base and expansion modules A SIPROTEC 5 device can consist of exactly one base module, and in the case of a two-tier device, optionally up to 9 expansion modules and a power-supply module. Base and expansion modules are distinguished firstly by their width. A base module takes up a third of the width of a 9-inch frame, while an expansion module takes up a sixth. The larger width of the base module creates sufficient space at the rear for connection to the process (terminals) as well as plug-in modules. The expansion module can provide either additional process connections or additional communication connections. Fig..4/ shows the rear side of a device consisting of a base module in which the power supply, the CPU module and an I/O board are permanently installed, as well as 4 expansion modules for extending the I/O quantity structure, and communication modules. Each expansion module contains an I/O board. The components are connected by bus connector plugs and mechanical interlockings. Fig..4/ Rear view of base module with 4 expansion modules Such a device can be ordered pre-configured from the factory. In this context you can choose between the standard variants predefined by Siemens and the devices you have combined yourself. Every SIPROTEC 5 device can also be converted or extended according to your wishes. The modular concept absolutely ensures that the final device meets all standards, particularly with regard to EMC and environmental requirements. On-site operation panels The on-site operation panel is a separate component within the SIPROTEC 5 modular system. This allows you to combine a base or expansion module with a suitable front operation panel, according to your requirements. The modular system offers different on-site operation panels for selection, both for base modules and for expansion modules. The following variants are available for base modules (Fig..4/): With a large display, keypad and 6 multi-colored LEDs With a small display, keypad and 6 multi-colored LEDs 6 multi-colored LEDs Fig..4/ Operation panels with (from left) large and small display, and operation panel without display.4/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

43 Hardware Perfectly tailored fit Operation On-site operation panels (continued) The following variants are available for expansion modules (Fig..4/4): Without operating or control elements With 6 LEDs (single-colored) With 6 LEDs (single-colored) and key switch. The SIPROTEC 5 module is flexible with regard to selection of the operation panel. You can order any device type with a large, graphical display or with a smaller, economical standard display. For applications without device operation an operation panel without display is also available. The operation panel with a small display seven lines for measured values or menu texts as well as the graphic representation of for example single busbar. All operation and control keys are available to the user, i.e. he can also control switching devices. Elements of the on-site operation panels The operator elements are illustrated with the example of the on-site operation panel with a large display. The central element is the generously sized display for text and graphics. With its high resolution, it creates ample space for symbols in graphical representations (Fig..4/5). Below the display there is a key keypad. In combination with 4 navigation keys and option keys you have everything you need to navigate conveniently and quickly through all information that is shown in the display. LEDs on the upper border of the operation panel inform you about the current device operating state. 6 additional LEDs, to the left of the keypad, ensure quick, targeted process feedback. The USB interface enables fast data transfer. It is easily accessible from the front and well protected with a plastic cover Labeling field for LEDs 6 LEDs (red) Key switch S5 Remote/Local Key switch S Interlocking Off/Normal Fig..4/4 Designs of the expansion modules The operation panel with large display also enables representation of a more complex control display (Fig..4/5) and thus offers more room for measured values and the display of event lists. This operation panel is therefore the first choice for bay controllers, busbar protection or combined protection and control devices As a third option, an economical variant is available without keypad and display. This variant is appropriate for devices that are seldom or never used by the operational crew Fig..4/5 Display of measured values in the large display SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/

44 Hardware Perfectly tailored fit Installation variants Elements of the on-site operation panels (continued) The keys O and I (red and green) for the direct control of equipment, a reset key for the LEDs, and the control key for switching to the control display (mimic diagram), complete the operation panel (Fig..4/6). Options You can order any SIPROTEC 5 device, regardless of its individual configuration, in different installation variants: As flush-mounting device As surface-mounting device with integrated on-site operation panel As surface-mounting device with the on-site operation panel detached. The construction of the flush-mounting devices will be recognizable from the previous sections. We would like to briefly introduce you to the two other variants here. Surface-mounting device with integrated on-site operation panel For wall-installation the SIPROTEC 5 devices can be ordered in the surface-mounting housing (Fig..4/ 7). Thanks to a new concept, these devices have terminal connection diagrams that are identical to the corresponding flush-mounting devices. This is achieved by installing the devices using the principle with the face to the wall and then attaching the operation panels to the terminal side. With the brackets that are used, sufficient space remains for the wiring, which can be routed away upwards and downwards. Surface-mounting device with the on-site operation panel detached If the operation panel is to be installed detached from the device, it can be installed as a separate part and connected to the device with a.5 m long connecting cable. In this way, the SIPROTEC 5 device can be situated, for example, in the low-voltage fixture and the operation panel can be installed precisely at the correct working height in the cabinet door. In this case, the device is fastened like a surface-mounting device on the cabinet wall. An opening must be provided in the door for the operation panel. Fig..4/7 Device in surface-mounting housing.5 Large graphical display Labeling field for LEDs 6 LEDs (green or red, settable parameters) 6 LEDs (red) LED reset USB interfaces Labeling field for function keys Numerical keys and function keys Control/command keys Context-sensitive keys Cursor keys....4 Key switch S5 Remote/Local Key switch S Interlocking Off/Normal Fig..4/6 SIPROTEC 5 operation panel.4/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

45 Hardware Perfectly tailored fit SIPROTEC 5 terminals The SIPROTEC 5 terminals Innovative terminals offering many advantages were developed for the SIPROTEC 5 family (Fig..4/ page.4/).. All terminals are individually removable (Fig..4/9). This enables pre-wiring of the systems, as well as simple device replacement without costly re-wiring... Current terminals (safety CT plug):.4 The 8-pole current terminal with 4 integrated current transformers is available in designs: 4 protection-class current transformers protection-class current transformers + sensitive protection-class current transformer 4 instrument transformers The terminal design enables the following advantages for the connection of currents: Exchange of the current transformer type also possible retroactively on-site (e.g. protection-class current transformer for instrument transformer, sensitive for normal ground current transformers in cases of network conversions) Additional safety during tests or device replacement, since the secondary current transformer circuits always remain closed. Voltage terminal: Fig..4/8 Voltage and current terminal block with bridges The voltage transformers and the binary input and output signals are connected via the 4-pole voltage terminal. The cable entry to the terminal enables clear access to the terminal connection. Bridges precisely matching the current and voltage terminals are available for bridging contacts with common potential (see spare parts/accessories, page.6/ and Fig..4/8)..5 Fig..4/9 Removed current terminal block SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/5

46 Hardware Perfectly tailored fit Modules Selection of the input /output boards Which and how many process connections a base or expansion board has depends on the choice of a particular input/output board. The modular building block concept includes different input/output boards. The IO0 input/output board is used e. g. as a base measuring module. By equipping several modules with this module, you can achieve up to 40 measuring channels per SIPROTEC 5 device. In the module there are connections for: 4 voltage transformers 4 current transformers, optionally protection-class current transformer, sensitive protection-class current transformer or instrument transformers 8 binary inputs (BI) 6 binary outputs (BO), designed as 4 fast speed (Typ F) normally-open contacts and fast speed change-over contacts. The connections are distributed on (Fig..4/0): x 8-pole current terminal block x 4-pole voltage terminal blocks Select the modules suitable for your purposes so that you can build the SIPROTEC 5 device that precisely matches your application. You will find an overview of the modules that are available and their quantity structures in Table.4/ Module quantity structures. Second module tier If the number of inputs and outputs of a unit with 4 expansion modules is not enough, a second tier can be added. This requires a PS0 power supply in the second tier on the first mounting position. The remaining 5 positions can be filled with expansion modules from the SIPROTEC5 module range. Exception: The CB0 must always be in the first tier and only one can be used with each unit. Module CB0 Module CB0 represents a special case. CB0 (CB = Communication Board) provides positions for plug-in modules. These can be used to plug in up to communication modules or up to measurement transducer modules. Combinations are also possible, e.g. communication modules and one measurement transducer module. The power supply is integrated, so that the CB0 can be powered independently of the main device. Communication with the main device is assured via an RJ45 connector and the bus connection on the front of the module. The CB0 is always integrated in an expansion module (Fig..4/) Fig..4/0 Rear view of an expansion module IO0 Fig..4/ Expansion module based on the example of the CB0.4/6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

47 Hardware Perfectly tailored fit Modules Available in the base module Power supply Implemented in device row.4 ) X X PS0 Power supply module for the second device row X X.5 CB0 Module with additional slots for modules X X IO0 Base module for all 7xx8 devices that require current measurement IO0 Base module for all 7xx8 devices that require current and voltage measurement IO0 Module for additional binary inputs and outputs for all 7xx8 devices IO0 Base module for protection applications that require no voltage measurement IO0 Base module for all devices that require current and voltage measurement IO0 Module for device numerous current inputs IO04 This module contains 4 power relays for direct control of the operating mechanism motors of grounding switches and disconnectors 0 4 IO05 For protection applications with binary inputs and binary outputs IO06 For protection applications with binary inputs and binary outputs IO07 Geared toward bay controllers due to the predominant number of binary inputs (feedback from switchgear) IO08 IO09 IO U-input Description It is a typical module for protective applications. In contrast to the IO0, it is equipped with more relay outputs 4 4 IO5 IO0 Base module for all devices that require current and voltage measurement. In contrast to the IO0 it has a reduced quantity structure of binary inputs and outputs Special module for connecting special highresistance voltage dividers over 0 V voltage inputs Module for acquisition of large volumes of data, for example, in the bay controller or busbar protection. Process connection is effected via special terminals X X.8 7 X X X, X X, X X,. X,. 6 X, 6 7 X, 6 8 X, X X, X, X,.6 X, ) X X, X, Differentiation of relay types: Type F fast relay with monitoring (pickup time < 5 ms) Type HS high-speed relay (contact with solid-state bypass) with monitoring (pickup time < 0. ms) *) In preparation ) 0 V voltage input for high-resistance RC-splitter ) of which life contact The connection diagrams of the individual modules are included in the appendix. Table.4 / Module overview. IO *) Module for devices that require a numerous, fast measuring transducer inputs (0 ma, 0 V) IO4. 4 This module is used when extremely fast tripping times (4 normally-open contacts, 0. ms pickup time) are required, such as, e.g. power system for very high voltages Module for devices that require a numerous voltage inputs Availabe in the expansion module Number of slots for plug-in modules X BO power relay X Power supply module for the first device row Measuring trans ducer 0 ma/0 V PS0 BO change-over contacts type F ) BO change-over contacts BO normally-open contacts type HS BO normally-open contacts type F BO normally-open contacts Power supply module for all 7xx8 devices BI (isolated) PS0 I-input. Designation BI (connected to common potential) X, SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4 / 7

48 Hardware Perfectly tailored fit Modules Measuring ranges of the current transformer modules The measuring range (full modulation) of the current transformers can be set to different values electronically depending on the field of application. In all cases, you can choose between protection-class and instrument transformers. Only protection transformers can be used for busbar protection because of the large dynamic range involved. The possible measuring ranges according to rated current are shown in the following Table.4/ Measurement ranges according to rated current. A large dynamic range is necessary for network protection applications, so that short-circuit currents can be recorded without distortion. A value of 00 I rated has proven optimal. For 5 A transformer rated current, this corresponds to a setting of 500 A, and consequently of 00 A for A transformers. For applications in generator protection, while it is true that there are very large primary currents, a dynamic range of 0 I rated is still quite sufficient. Thus a measuring range of 00 A is obtained for a setting I rated = 5 A and a measurement range of 0 A for I rated = A. A smaller dynamic range means that greater accuracy is achieved in the rated current range. Consequently, the dynamic range for instrument transformers and sensitive protectionclass current transformer input for ground fault currents is extremely limited. In this case, limited means that the input current is chopped on the analog side. Of course, the inputs in this case are protected against overdriving. Plug-in modules Plug-in modules are available for communication or analog inputs. The communication modules are described in the Communication section. The analog input module has four 0 ma inputs. It can be plugged into one of the slots in the PS0 or CB0. Multiple measured value modules can be used with each device (one in each available slot), but as a rule one slot is needed for a communication module. The connections are created via an 8-pole screwed terminal block (Fig..4/). The technical data for the measuring-transducer module is provided in Section Summary of technical data (see chapter.5). Rated current I rated Measuring range Protection-class current transformers Instrument transformers Sensitive groundcurrent input 5 A 500 A 5 A 00 A A 00 A A 0 A 5 A 40 A A 8 A A.6 A 5 A 8 A A.6 A Table.4 / Measuring ranges according to rated current Fig..4/ Measuring-transducer input module ANAI-CA-4EL /8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

49 Hardware Perfectly tailored fit Standard variants Standard variants To make it easier to select the correct devices, Siemens offers you pre-configured devices, which are called standard variants. These combinations of a base module and one or more expansion modules are intended for specific applications. In this way, you can order exactly the right device with a single order number. And standard variants can also be modified easily and quickly with additional expansion modules. Thus, it is just as easy to add modules as it is to replace certain modules with others. The available standard variants are listed in the SIPROTEC 5 order configurator. Fig..4/ shows one possible standard variant for the 7SL87. This variant describes a / x 9 wide device having the following quantity structure: 5 binary inputs 0 binary outputs 8 analog current inputs 8 voltage inputs. The modules used in the device can be seen on the results page of the SIPROTEC 5 configurator (see chapter.5, Engineering Fig..5/ for more details). In our example, the following modules are used in positions to (Fig..4/4): Position : IO08 Position : PS0 Position : IO0. Fig..4/ Standard variants for 7SL The individual terminations are defined by the mounting location of the module and the terminal designations of the module (see chapter., Connection diagrams). As an example the connection points of the first 4 current inputs, that are on the IO08 at position, are designated as follows: I: A and A I: A and A4 I: A5 and A6 I4: A7 and A The additional 4 current inputs are at the rd mounting position on the module IO0, and are designated as follows: I: A and A I: A and A4 I: A5 and A6 I4: A7 and A Regardless of whether you choose a standard variant or configure your devices freely you always receive a thoroughly tested, complete device SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/9

50 Hardware Perfectly tailored fit Standard variants. Mounting position: Module: 6 IOxx 5 IOxx 4 IOxx IOxx PS0 IOxx A 5A A B A.6.7 6B 4B B G B.8.9 6C 4C C E H C D 5D 4D D F J K D () Current terminal A () Voltage terminal A, B, C, D () Terminal for time synchronization G (4) Plug-in module E, F (5) Terminal for detached on-site operation panel H (6) Battery compartment (7) Terminal for integrated Ethernet interface J (8) Terminal for COM link K (9) Base module / of 9 in (0) Expansion module /6 of 9 in () 0-pole terminal M () 5-pole terminal N 0 4 SIP EN.ai 9 Mounting position PS0 IOx IO0x Module 7xx8 devices A L G E M B F J N D Fig..4/4 Connection designations and Counting method Advantages of the flexible hardware module:... With the flexible hardware module, you conveniently configure the optimal hardware scope for your application For many applications, the appropriate device specification (standard variant) is already pre-defined.4 The hardware design is appropriate for your switching cell The innovative SIPROTEC 5 terminal with integrated current transformers offers increased safety in systems testing and flexibility when exchanging the transformer type.4/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

51 Engineering Holistic workflow Order configurator Project engineering with SIPROTEC 5 places your workflow in the center. It supports you from the beginning with the single line diagram of the primary system on to ordering, engineering and parameter setting all the way through to testing and commissioning. For you, this means: fewer errors, higher quality and higher efficiency. Product selection via the order configurator The order configurator assists you in the selection of SIPROTEC 5 products. The order configurator is a Web application that can be used with any browser. The SIPROTEC 5 configurator can be used to configure complete devices or individual components, such as communication modules or extension modules. At the end of the configuration process, the product code and a detailed presentation of the configuration result are provided. It clearly describes the product and also serves as the order number. All functions from the library The SIPROTEC 5 devices always have a base functionality available depending on device type. You can extend these flexibly with any desired functions from the library. Additional functions are paid with your credit balance, which is reflected in function points. The function points calculator assists you in finding the correct function points value for your application. This guarantees that the selected device has the required functionality. SIEMENS SIPROTEC 5 Configuration Nov 5, 00 8:59 AM SIEMENS SIEMENS SIEMENS For you, holistic workflow means optimal, integrated support for all project phases: Project specification System engineering Device engineering Commissioning Operation and service Device: 7SL87 Diff. & Dist. Prot./p multi-end protection Product code Short: PC Long: 7SL87-DAAA-AA0-0AAAA0-AS-A-DBB AA0-CHBA-CE0CE0 Product code Figure of hardware Detailed description of hardware Fig..5/ Housing width: Housing type: Binary inputs: Binary outputs: Current transformers: Voltage transformers: Modules in 9" row : Modules in 9" row : Number of LEDs: Operation Panel: Key switch: Display type: Front Design: Power Supply: 4/6 x 9" Flush mounting 46 Relays (8 Standard, 8 Fast, 0 High-Speed, 0 Power) 4 for protection, 0 for measurement and sensitive ground-current detection 4 IO08, PS0, IO05, IO05 48 Integrated Without Small display Standard DC 60 V-50 V, AC 5 V-0 V Result representation of the configuration, hardware details SIP5-006.EN.ai SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

52 Engineering Holistic workflow Order configurator In the SIPROTEC 5 system, the main function is determined by selection of the device type, while the scope of additional functionality is determined by a single property, the function points value. This means that the functionality does not have to be fixed in detail during product selection. In the later engineering phase, any optional additional function can be selected from the device-specific function library. You must simply ensure that your balance of function points ordered for the device is not exceeded. Extra function points can simply be reordered at any time. Clearly presented result representation The successful configuration of a device is represented on a clearly organized result page. You can also save the result as a.pdf file (Fig..5/). The specified product code can then be adopted directly into the information system or the ordering system or DIGSI 5 ( Fig..5/ Result representation of the configuration, functional scope.5/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

53 Engineering Holistic workflow DIGSI 5 DIGSI 5 without detours The product code calculated with the SIPROTEC 5 configurator can be adopted directly into the engineering program DIGSI 5. In this way you create your selected devices directly in DIGSI 5. Since all device characteristics are uniquely specified via the product code, engineering work with DIGSI 5 starts on a consistent basis, without the need for a time-consuming re-entry of the device characteristics. From planning to engineering up to testing DIGSI 5 The all-in-one engineering tool DIGSI 5 assists you in your workflow from planning to operation of your systems with SIPROTEC 5 devices. With DIGSI 5 you have full control over the engineering. The functional scope of the tool covers all tasks from device configuration and device setting to commissioning and evaluation of fault data. This is how a modern, efficient engineering process looks in short form: In the rough planning, the system layout is documented using CAD. This system layout is created in the single line editor based on the detail planning. Depending on the application, the required functionality (protection functions, control and automation scope as well as auxiliary functions) is defined and Project navigation showing offline configurations and accessible devices a device is selected. In the next step, the device is assigned an application template tailored to the application. Function adaptations are possible at any time after the selection of the application template. The high-performance copying functions with consistency tests enable rapid project engineering. Then the system configuration (routings, implementation of corresponding logic into function charts (CFC)) and the parameterization must also be performed. The new program structure of DIGSI 5 is designed to optimally support the required work steps during a project. The application-oriented engineering approach guarantees that you are always aware of the workflow. DIGSI 5 makes you more productive from design to engineering and even with installation, commissioning and operation. Working area showing all editors Add all new elements from the library Fig..5/ Structure of the DIGSI 5 user interface Properties and status information SIP EN.ai SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

54 Engineering Holistic workflow DIGSI /4 The project view leads through the entire workflow In DIGSI 5 processing and maintenance of all components of IEDs and of all associated data is carried out in a project-oriented fashion. This means that the topology, devices, parameter values, communication settings, process data and much more are stored in one project. All device data are a click away. By simply opening the device in the project tree and the entire contents is made available. When you begin with a device, you can process your tasks simply and intuitively. The user interface of DIGSI 5 is divided into several areas (Fig..5/, page.5/ ). In the project tree on the left everything is displayed that belongs to your project, for example devices and global settings. With a double-click on an entry, an editor opens up in the main area of the window. This can be, for example an editor for changing protection parameters, for configuring communication mappings or for creating function charts (CFC). In the lower area of the screen view, you can quickly and conveniently access the properties of all elements (e.g. with circuit breakers or signals). This area also contains lists with warnings and errors. The libraries are particularly important in DIGSI 5. They are located on the right and contain everything that is used in the editors. Here you select the required scope and insert it into your project. When configuring the hardware, you can select different hardware components, e.g. a communication module. On the other hand, if you are working with function charts (CFC), you select the corresponding logical building blocks and choose the required functionality while configuring the protection scope. For this you move the elements to the position of the editor where you need them. Fig..5/4 MU-I Fig..5/5 MU-V Visual definition of the primary topology in single lines The single line diagram describes the primary topology of your system (Fig..5/4). For this, simply select the correct single line template from the library. Further processing, e.g. extension, is possible without difficulty. DIGSI 5 contains a library with elements that are familiar to you from the ANSI and ISO standards. From the application to the solution: Application templates and their modification After the topology has been defined, the next step is to add the required device. You simply adopt the ordering code from the configurator in DIGSI 5 and your device specification is already known. In the following step, you select the application template appropriate for your application and adapt it according to your requirements (Fig..5/5). Graphical definition of the topology of a substation in single line SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition IF IF FG FG 59 8 Principle of an application template IF Remove functions that are not needed and add the desired functions. The library offers you an extensive selection that you can use for this. The consistency of the device configuration is continually checked. Finally, you can graphically connect the application template with the primary elements of the single line diagram (voltage and current transformers as well as circuit breakers) (Fig..5/6, page.5/5). Thus a topological reference is created. Setting values of the transformers (primary and secondary rated values, as well as the neutral point formation with current transformers) can then be adopted from the single line diagram. IF trip 79 5 SIP5-000.DE.ai

55 Engineering Holistic workflow DIGSI 5 Design of user defined control displays With the display editor you can create or change the factory-preset displays, known as control displays. The editor assists you in a typical workflow. You simply decide which fields of your already created single line diagram are to be used for the display pages and that is all there is to it. Naturally, the displays can also be completely newly created or imported. For this, drag a signal from the library to a dynamic element in the display and the connection is created. Besides the use of symbols in accordance with the IEC and ANSI standards, you can create your own static or dynamic symbols in a symbol editor. Routing and assignment The routing matrix is one of the most important functionalities of DIGSI 5. It is conveniently divided between editors: Information routing and communication assignment. Both views are designed such that you can quickly complete your task. With pre- or self-defined filters you reduce the displayed information to a minimum. As in Excel, you can select which information is to be displayed for each column (Fig..5/ 7). Fig..5/6 Graphical linkage of primary and secondary equipment In the matrix, all signals are sorted according to function and function groups. Sources and destinations are displayed as columns. The scope reaches from the compressed form of representation to a detailed representation of information in which you can view and change each piece of information (routing to binary inputs and outputs, LEDs, buffers etc.) in different columns. In this way, all information can be configured very simply. For communication assignment all necessary settings are already populated for the selected protocol. You can adapt these simply and quickly to your needs. With a large selection of filters and the option to open and close rows and Fig..5/7 The entire flexibility of the information routing editor columns you will find it easy to display only the information that you need. Saving time is a priority with DIGSI 5. All table-based data displays furnish the functionality to fill adjacent cells with a single mouse-click in the same way you know from Excel. Additionally, you can copy everything in DIGSI 5 in order to avoid having to enter settings, functions and devices etc. twice. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition /5

56 Engineering Holistic workflow DIGSI /6 Better protection of the system against invalid operation In SIPROTEC 5 devices, a PLC (Programmable Logic Controller) is integrated, in which e.g. standard interlockings can be executed. If you want to change or adapt these, use the function chart (CFC) editor that is included as a component in DIGSI 5 Standard and Premium. Thanks to the fully graphical user interface, even users without programming knowledge can fully utilize the functional scope and thus flexibly adapt the functionality of the device (Fig..5/8). For this, an entire library is available to you with building blocks that are compatible with IEC 6-. This library contains simple logical operators, such as AND, but also complex functions such as timers relays, command chains for switching sequences, and much more. The use of the editor is more efficient than ever before. You thus need fewer building blocks in order to achieve your objectives. This decisively improves the readability of the function chart (CFC). New display modes also increase clarity. The new modes offer you a compressed view of the building blocks and connection points, so that you can see all the information you need without having to scroll through it. Even the use of signals in a function chart (CFC) is designed to be simpler. Drag a signal via drag & drop from the signal library to the input or output port of a building block and you are finished. Naturally, your function charts can also be transferred from DIGSI 4. Thus you can continue to use logic plans that have already been created. Created logic plans can be tested even without devices (offline) with DIGSI 5. This ensures the necessary quality for commissioning and gives you a time advantage. Fig..5/8 Simple creation of automation with the CFC editor Setting the parameters of the device All parameter settings are represented in the same way. This occurs in the parameter editor, which displays all parameters of a function. Here you have the choice between different views of the settings. On the one hand there is a primary view, Fig..5/9 Setting parameters was never simpler in which you can directly enter the primary setting values. In this way, the conversion using conversion factor ratios, which can lead to setting errors, can be avoided. The same applies for the per unit view, where setting parameters refer to object rated values. If you decide on the secondary view, the setting parameters must be converted to secondary values. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

57 Engineering Holistic workflow DIGSI 5 For setting special protection characteristics, the graphical representation of the characteristics is advantageous. In the parameter editor all characteristic variants of the function are represented. Through this you can immediately graphically check the effects of changes in the settings. Setting values of different parameter groups can quickly and easily be compared in a common window, differences can be detected and compensated for (Fig..5/9). Cooperating in teams Improve your engineering performance by cooperating in teams. While one crew works on the settings of the routing, others can define the protection parameters or set the parameters of the system interface. The individual areas can be updated at any time with new entries of colleagues. For example, when the protection parameter crew has updated its data this data can be adopted into the project. Fig..5/0 Comprehensive testing support during commissioning and operation The testing and diagnostic functions assist you in the commissioning phase. You can thus quickly and simply test the wiring or observe the effect that a message carried over the system interface has in the superordinate station. The error messages that are recorded in the case of a fault of the protection object in the relay are listed in DIGSI 5 and can be displayed, saved and printed for documentation purposes. The new testing options are an innovation (also see test). Multi-level test sequences can be defined (even for phasor) via a sequencer functionality. These are loaded into the device with DIGSI 5 and simulate the physical inputs there. These are then executed in the device via the integrated test sequencer, which simulates the analog process values. In this way, you can define and execute complex checks for testing your project engineering and logic already at Fig..5/ an early stage. With the test and diagnostic functions, extensive test equipment is no longer necessary or their tests are reduced to a minimum. Processes that were developed for testing special protection principles, e.g. for line differential protection, can be found in the respective device manual. Definition of test sequences for comprehensive tests of device configurations Graphical configuration of network connections between devices The function chart (CFC) editor also offers new analysis functions. DIGSI 5 thus enables offline debugging of logic plans as well as tracing of measured values both in the representation of the logic plan and in the representation of lists. Accordingly, overall testing effort is reduced during commissioning. The results of the function chart (CFC) analysis can also be represented after completion of the test sequence, e.g. with the assistance of SIGRA. Thus even complex runtime relations can be analyzed simply. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition /7

58 Engineering Holistic workflow DIGSI 5 Direct online access of all accessible devices DIGSI 5 also assists you in your workflow if your devices engineered offline are connected with the devices in your plant in your system. In DIGSI 5, all devices accessible via communication interfaces are displayed immediately next to your offline devices. The preferred communication in networks is Ethernet. Naturally, you can individually access devices via a USB interface. In order to work with a physical device, connect the online device and offline configuration via drag & drop and you are done. Besides transferring the device configuration to individual devices, you can also automatically transfer all device configurations to your devices. Besides online access, in addition to reading fault records and message buffers, you can also display measured values and messages. You can save snapshots of measured values and messages in archives for subsequent analysis or for documenting tests of temporary operating states or commissioning. Openness through import and export DIGSI 5 offers a broad spectrum of exchange formats. These include the standard formats of IEC 6850, as well as the uniform data exchange format TEAX of Siemens Energy Automation Tools. This XML-based format is the foundation for all import-export scenarios and ensures efficient workflows in the engineering process. Since data must only be entered once, engineering effort is reduced and you profit from consistent data quality at all levels of automation. Besides efficient data exchange for the levels of energy automation, the XML data format also supports the simple exchange of data with other applications. Via the import interface, you can read data from other applications into DIGSI 5. This thus enables external project engineering of the devices. Similarly, you can export the settings data to other applications for further processing. It is thus easy to exchange data with other power distribution applications, e.g. network calculations, protection data administration/evaluation as well as data for the protection function test. With Siemens ENEAS Generic Solutions, Siemens is taking the next step forwards and offers a modular system with defined templates, consisting of precise definitions and ready-made project engineering and documentation solutions for configurations, SIPROTEC field devices, SICAM station units, operating management, for functions and communication. The result is that all project phases from planning to commissioning, as well as all upgrades, extensions and maintenance, are more efficient..5 Grid controller level Load Tools Station level Load Tools Import Export Import Export Advantages for system engineering: Common data basis for problem-free data exchange Data only has to be entered once Plausibility checks ensure consistent engineering data... Field level Load DIGSI 5 for system and device engineering User friendliness of the tools saves training effort SIP5-00.EN.ai.4.5 Fig..5/ Open exchange formats allow reuse of data on all levels.6.7.5/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

59 Engineering Holistic workflow Effective fault analysis with SIGRA Effective fault analysis with SIGRA After a protection trip following a network fault, it is important that the disturbance is quickly and completely analyzed. With the fault records saved in the SIPROTEC 5 devices you can investigate and resolve even complicated faults. The high-performance tool SIGRA assist you in your evaluation. Besides the usual time-signal representation of the recorded measured variables, it is also designed to display vector diagrams, locus diagrams and bar charts in order to represent harmonics and data tables. From the measured values recorded in the fault records, SIGRA calculates further values, e.g.: missing variables in the -phase system, impedances, symmetrical components, etc. Defect tracing can be evaluated simply and conveniently using measuring cursors. You are also able to evaluate several fault records in parallel with SIGRA. For example, the records from the ends of a line differential protection: you can synchronize these on a common time basis, then process as usual and save as a new record (representation in one diagram). Thus, the defect trend can be well documented. Fig..5/ SIGRA time signals SIGRA also has an offline fault locator. In this context, the fault record from the line ends are evaluated. Through the precise determination of the fault location you save time, which you can then use to investigate the fault on-site..5 SIGRA can be used for all fault records present in the COMTRADE file format. The software product is available as an optional package in addition to DIGSI 5 Standard, as a standalone variant, and is a component of DIGSI 5 Premium Fig..5/4 SIGRA phasor diagram SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/9

60 Engineering Holistic workflow Effective fault analysis with SIGRA Overview of functions 6 diagram types: Time-signal representation (standard) Locus diagram (for example for RX) Vector diagram (reading of angles) Bar chart (for example for visualizing harmonics) Table (with values of several signals at the same point in time) Fault location determination (display of fault location) Calculation of additional values, such as e.g. positive sequence impedances, RMS values, symmetrical components, phasors, etc. measuring cursors that are synchronized in all views High-performance panning and zoom functions (e.g. section enlargement) User-friendly project engineering via drag & drop Innovative signal routing in a clearly structured matrix Time-saving user profiles, which can be assigned to individual relay types or series Addition of further fault records and synchronization of multiple fault records with a common time basis Simple documentation through copying of the diagrams e.g. into MS Office programs Offline fault location determination Commenting of fault recorders, and commenting of individual measuring points in diagrams and free placement of these comments in diagrams Application of mathematical operations to signals. Fig..5/5 SIGRA circle diagrams Fig..5/6 SIGRA harmonics /0 DIGSI 5 assists you in an optimal and holistic manner for your SIPROTEC 5 project: Integrated system and device engineering Graphical user interface simplifies and accelerates project engineering Application templates and function groups as image of the primary application and the primary objects, such as the line or circuit breaker, guarantee a user-oriented working method and perspective Test and simulations tools offer optimal plausibility checks SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

61 Communication Designed to communicate Integrated interfaces SIPROTEC 5 devices are equipped with high-performance communication interfaces. These interfaces are integrated or extendable via plug-in modules to offer a high degree of flexibility. The concept of plug-in modules and loadable protocols enables exchangeability and retrofitting. SIPROTEC 5 devices are equipped with high-performance, pluggable communication interfaces and thus support optimal migration concepts in system modernizations. Fig..6/ Front view of the device with USB interfaces For you, Designed to communicate in SIPROTEC 5 means: Up to 8 interfaces available Data exchange via the IEC 6850 protocol for up to 6 clients Flexibly retrofittable plug-in modules for communication Many protocols available USB connections on the front side On the front side of the base module there are USB connections. A PC with operating program DIGSI 5 is directly connected to the device via a standard USB cable through an USB-B port. The complete configuration and setting of the device is carried out via this point-to-point connection. Integrated interfaces on the rear of the base module The base module offers various, permanently installed interfaces on the rear. For even greater flexibility, slots are available for plug-in modules. For this, please observe the connection diagrams in the appendix, chapter.. Integrated Ethernet interface (port J) This electrical RJ45 interface serves to connect DIGSI 5 via a local Ethernet network. In this way, several devices can be operated from DIGSI 5 via an external switch. DIGSI 5 detects the devices even without an IP configuration on the local network and can then assign them network addresses. Optionally, the IEC 6850 protocol for connections with 6 clients can be activated on this interface. On SIPROTEC 7Sx8 units, GOOSE messages are supported on this interface; otherwise, only client-server communication to the control and protection system with the IEC 6850 protocol is supported. Time-synchronizing interface (port G) Fig..6/ G H J K Rear view of the device with integrated interfaces and module slots (left side: basic module; right side: CB0) Via the 9-pole Sub-D socket (connection compatible with SIPROTEC 4), the time in the device can be synchronized. The set clock telegram IRIG-B005 (007) of a GPS receiver can be fed with 5 V, V or 4 V levels. In addition, the Central European DCF77 format with summer and winter time changes is supported. An additional second pulse input enables microsecond-precise synchronization of the device from a highly precise time source, e.g. a special GPS receiver. This accuracy is needed for special protection and measuring tasks. In this way, devices can be precisely synchronized to the microsecond supra-regionally. For this, Siemens provides a pre-fabricated complete solution with time receiver, optical fiber converters and appropriate connection cables SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

62 Communication Designed to communicate Plug-in modules for communication Connecting a detached operation panel (port H) A detached operation panel provided together with the connection cable can be connected to this interface. The maximum distance is.5 meters. Connecting the extension unit CB0 (port K) The base module offers slots for plug-in modules. If further plug-in modules are needed, these can be provided via a special expansion module CB0. This module is connected via port K. The expansion module is delivered with an appropriate cable and is connected with port L on the module. The CB0 has its own wide-range power supply. A great advantage here is that the switch integrated in an Ethernet module can execute its data forwarding function for neighboring devices even if the power supply of the base device is switched off provided the CB0 is still supplied. Thus an Ethernet ring is not disconnected when a device is in service. Via plug-in modules the devices can be extended with protocol interfaces and analog inputs. The devices can be ordered with assembled modules or be extended with modules retroactively. An expansion module CB0 (right photo in Fig..6/, page.6/) can also be assembled with plug-in modules. The modules are easy to service, and can be plugged in without having to open the device. Since the modules have their own processor, the base functions of the device, e.g. the protection functions and the protocol application, are largely independent. Modules are delivered without configured protocols or applications. One or more appropriate modules are suggested in the order configurator corresponding to the desired protocol on a module. There are serial modules with or electrical and optical interfaces. Different applications can run on both interfaces, e.g. synchronous protection communication of a differential protection on one interface and an IEC protocol on the second interface. Electrical and optical modules for Ethernet are still available. For example, the IEC 6850 protocol as well as auxiliary services may be executed for each module. Plug-in module positions of the device The base module can be extended via module slots E and F. All available modules can be installed there. The expansion module CB0 is designed for additional plug-in modules if the two slots in the base module are not sufficient. Any additional plug-in modules can be installed in slots N and P. Analog expansion modules can be plugged into slot M. This slot does not support serial or Ethernet modules. Serial plug-in modules Serial electrical plug-in modules are used for asynchronous serial protocols, e.g. IEC , DNP. Optical 80-nm/00-nm and 550-nm modules can also be configured as protection interface for the point-to-point connection. Serial electrical RS485 module This module has either (USART-AB-EL) or (USART-AC-EL) RS485 interfaces. The use of RJ45 sockets enables the construction of an economical serial RS485 bus with patch cables, which are simply looped through. This saves on wiring time and cable costs. Fig..6/ shows an electrical serial module with interfaces on which independent serial protocol applications are executed. Serial optical 80-nm module This module exists with (USART-AD-FO) or (USART-AE-FO) optical 80-nm interfaces (Fig..6/4), with which distances between.5 km can be bridged via 6.5-/5-µm multimode optical fibers. The optical connection is made via ST connectors. Apart from serial protocols, the synchronous serial protection interface can be operated on the module, and enables optical direct connections via multimode optical fibers. devices can thus either exchange data, e.g. of the differential protection via a short direct connection, or they can be connected through communication networks via a 7XV566 converter. Additionally, the module can be connected directly with an optical multiplexer input in accordance with standard IEEE C Fig..6/ Serial electrical double module (USART-AC-EL) Fig..6/4 Serial optical 80 nm double module (USART-AE-FO).6/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

63 Communication Designed to communicate Plug-in modules for communication Serial optical 00 nm/550 nm module Long distance modules are used for synchronous serial data exchange of protection communication via multimode optical fibers or single mode fibers. They are available with or interfaces (Table.6/). The optical connection is made via LC duplex plugs. Long distance modules for different distances for point-to-point connections of protection interfaces Optical wavelength Table.6/ Module designation with or interfaces 00 nm USART-AF-LDFO, USART-AU-LDFO 00 nm USART-AG-LDFO, USART-AV-LDFO 550 nm USART-AK-LDFO, USART-AY-LDFO Application max. 4 km via single mode fibers or max. 4 km via multimode optical fibers max. 60 km via single mode fibers 00 km via single mode fibers Long distance modules for different distances for point-to-point connections with fibers Special modules enable bi-directional data exchange via one optical fiber. This saves one fiber per data connection on optical fiber lines, without functional limitations in comparison with connections with two fibers. These modules transmit at 00 nm or 550 nm, but must be used in pairs (see table.6/ and Fig..6/5). The optical connection is made via LC simplex plugs. Plug-in modules for Ethernet Ethernet modules are used for Ethernet-based protocol applications e.g. IEC 6850, IEC , DNP TCP, time synchronization via SNTP, network management via SN, DIGSI 5 via TCP etc. Several applications can run in parallel, whereby unused applications can be switched off for security reasons. Fig..6/5 Serial, optical double module for wide-range connections via optical fibers (for module designation see tables.6/ and.6/) Electrical Ethernet module The ETH-BA-EL module has RJ45 interfaces (Fig..6/6). It can be configured with or without an integrated switch. The maximum electrically permitted distance via CAT 5 patch cables is 0 m. Optical Ethernet module The ETH-BB-FO module has optical LC duplex 00 nm interfaces (Fig..6/ 7). It can be configured with or without an integrated switch. The maximum optically permitted distance via 50/5-µm or 6.5/5-µm multimode optical fibers is km. The optical transmission and receiving level is measured in the module and can be displayed with DIGSI 5. Use of modules in pairs Table.6/ WAN modules for point-to-point connections with one fiber Fig..6/6 Fig..6/7 Electrical Ethernet module (ETH-BA-EL) Optical Ethernet module (ETH-BB-FO) Optical wavelength Module designation with or interfaces Application 00 nm/550 nm USART-AH-LDFO <> USART-AJ-LDFO max. 40 km via a single mode fiber (with integrated fiber optic multiplexer) USART-AX-LDFO <> USART-AY-LDFO SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition /

64 Communication Designed to communicate Plug-in modules for communication Physical connection Table.6/ Port or plug-in module USB-A 9-pole SUB-D socket x electrical Ethernet 0 /00 Mbit /s, RJ45 x electrical serial RS485, RJ45 x electrical serial RS485, RJ45 optical serial,.5 km, 80 nm, ST connector optical serial,.5 km, 80 nm, ST connector x electrical Ethernet 0 /00 Mbit /s, RJ45, 0 m optical Ethernet 00 Mbit /s, km, 00 nm, LC duplex plug Applications DIGSI 5 protocol IRIG-B, DCF77, highly accurate -s pulse IEC server (incl. GOOSE, reporting to 6 clients) IEC server (without GOOSE, reporting to 6 clients) IEC (extended) IEC IEC IEC server (incl. GOOSE, reporting to clients) DNP (serial) DNP TCP DNP TCP + IEC server (incl. GOOSE, reporting to clients) Synchrophasor protocol (IEEE C7.8-IP) Protection interface (Sync. HDLC, IEEE C7.94) * Slave Unit protocol (conection to 0 ma box or temp.box) Additional Ethernet protocols and services DHCP, DCP (automatic IP configuration) RSTP, PRP and HSR (Ethernet redundancy) SNTP (time synchronization over Ethernet) SN V (network management protocol) Note: The plug-in modules of the type USART and ETH can be used in slots E and F in the base module, as well as in slots N and P in the expansion module CB0. They are not intended for use in slot M in the CB0 expansion module. * Additional plug-in modules for protection interface: see table.6/4 Communication applications and plug-in modules Front interface Port G: Time synchronization Port J: Integrated Ethernet Module type: USART-AB-EL Module type: USART-AC-EL Module type: USART-AD-FO Module type: USART-AE-FO Module type: ETH-BA-EL Module type: ETH-BB-FO.6/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

65 Communication Designed to communicate Plug-in modules for communication Physical connection Plug-in module optical serial, 4 km, 00 nm, LC duplex plug optical serial, 4 km, 00 nm, LC duplex plug optical serial, 60 km, 00 nm, LC duplex plug optical serial, 60 km, 00 nm, LC duplex plug optical serial, 00 km, 550 nm, LC duplex plug optical serial, 00 km, 550 nm, LC duplex plug optical serial, bi-directional via optical fiber, 40 km, 00 nm/550 nm, LC simplex plug ) optical serial, bi-directional via optical fiber, 40 km, 550 nm/00 nm, LC simplex plug ) optical serial, bi-directional via optical fiber, 40 km, 00 nm/550 nm, x LC simplex plug ) optical serial, bi-directional via optical fiber, 40 km, 550 nm/00 nm, x LC simplex plug 4) Application Protection interface (Sync. HDLC, IEEE C7.94) Note: The plug-in modules of the type USART can be used in slots E and F in the base module, as well as in slots N and P in the expansion module CB0. They are not intended for use in slot M in the CB0 expansion module. ) USART-AH-LDFO only in connection with USART-AJ-LDFO or USART-AY-LDFO on the opposite side ) USART-AJ-LDFO only in connection with USART-AH-LDFO or USART-AX-LDFO on the opposite side ) USART-AX-LDFO only in connection with USART-AJ-LDFO or USART-AY-LDFO on the opposite side 4) USART-AY-LDFO only in connection with USART-AH-LDFO or USART-AX-LDFO on the opposite side Module type: USART-AF-LDFO Module type: USART-AU-LDFO Module type: USART-AG-LDFO Module type: USART-AV-LDFO Module type: USART-AK-LDFO Module type: USART-AY-LDFO Module type: USART-AH-LDFO ) Module type: USART-AJ-LDFO ) Module type: USART-AX-LDFO ) Module type: USART-AY-LDFO 4) Table.6/4 Plug-in modules for applications with protection interface Table.6/5 Plug-in module for additional applications Plug-in module Physical connection 8-pole screw-type terminal strip Application Measuring transducer, 4 inputs, DC ± 0 ma Note: The plug-in module of type ANAI can be used in both slots in the base module (ports E and F), as well as in all slots in the expansion module CB0 (ports M, N and P) Module type: ANAI-CA-4EL SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/5

66 Communication Designed to communicate Protocols Plug-in modules are delivered without a protocol application. According to table.6/ (page.6/4) a module can be initialized via DIGSI 5 with a protocol application. Every interface is assigned the desired application via software. Assignments can be erased and re-configured. This enables a high degree of flexibility when configuring the modules. DIGSI 5 protocol The DIGSI 5 protocol works with TCP services, which can be routed via IP networks. Worldwide remote access to devices via secure connections is an integral component of the communication concept. Notes on secure access via networks can be found in chapter.9 of this catalog. The protocol is available on the USB interface and all Ethernet interfaces. Optionally, DIGSI 5 can also be operated via its own Ethernet module if systems control functions and access for operating and main-tenance are to be kept strictly separate. IEC 6850 client-server communication via the integrated Ethernet interface (port J) This interface can be used in addition to DIGSI 5 as a simple IEC 6850 systems control interface. It supports a client-server connection with a reporting function (GOOSE is not supported on port J). Messages, measured values and fault records can be read from an IEC 6850 client. Parameters in the device can be changed via the client and the time of the device can be set via an SNTP server. On SIPROTEC 7Sx8, this interface also supports GOOSE messages of IEC IEC 6850 client-server communication on Ethernet modules Messages, measured and metered values can be transferred via the client-server communication in static and dynamic reports to a maximum of 6 clients (substation controller). Dynamic reports are created and read by the client without resetting the parameters of the device. The static reports are created in the device via DIGSI 5 and the integrated system configurator and are permanently saved in the device as indication lists. Fault records can also be polled in binary Comtrade format. Extensive control functions are available from the client, e.g. for the safe switching of a circuit breaker. The setting parameters of the device can be read and also changed via the IEC 6850 protocol. The devices can be integrated in interoperable, intelligent smart grids without difficulty. Changing the device settings during operation is possible through systems control equipment, in order to adapt selected setting parameters to the operating conditions. Redundant solutions can be realized with Ethernet modules /6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

67 Areas of use of IEC 6850 GOOSE inside and outside of the substation GOOSE has been established as a worldwide standard for cross- communication between devices, in order to transfer messages and measured values between devices. In addition to GOOSE between devices within a substation, GOOSE is also supported between devices in different substations. The exchanged information is described in data terms via standard-conforming SCL files, which are defined in Edition of IEC The exchange itself occurs via high-performance IP network connections or direct connection via optical fibers. This data exchange can also be realized via an Ethernet module used exclusively for this purpose. GOOSE in the application GOOSE messages contain time-critical signals that must be transferred within a few milliseconds. In this case, GOOSE connections replace transfer via contacts and binary inputs; for protection signals, transfer times under 0 ms are required, and under 0 ms for switch positions and interlockings. Measured and metered values are transferred in less than 00 ms. For this, GOOSE applications are generated in DIGSI 5. These data are exchanged in a high-performance manner via GOOSE messages. Further attributes of a GOOSE message are also configurable with DIGSI 5. Receivers of GOOSE messages can constantly monitor the receipt of indications and measured values for a break of the connection. The state of missing indications is automatically updated at the receiver, in order to attain a secure state. This allows a constant, high-quality monitoring of GOOSE communication to be realized. GOOSE messages transmitted during the test mode of a device are ignored in the receivers if these are in normal operation. A test of a device can be performed with disconnection from the communication network. Communication Designed to communicate Protocols Serial IEC protocol The serial protocol is transferred via RS485 or an optical 80 nm interface. The compatible or Siemens specific extended IEC protocol is supported. The implementation is compatible with existing solutions, e.g. with SIPROTEC 4 devices, which will enable a trouble-free exchange and extension of devices even in the very long term. In addition to indications, measured values and fault records, metered values and customer-specifically defined indications of control functions are also available in protocol extensions. Control commands for switching devices can also be transferred via the protocol. Setting values in the device can also be read or changed via the generic services of the protocol. Information about the device can be routed to the protocol interface by the user with DIGSI 5. Information types and function numbers can be freely configured here. This enables adaptation to existing solutions and the interchangeability of devices without changes in the substation controller. This is an important contribution to investment security. IEC protocol The IEC substation and power system automation protocol is supported via the electrical and optical Ethernet module. Indications (single and double), measured values, metered values can be transmitted to one or two (redundant) masters. IEC 04 file transfer is also supported and fault recordings can be read out of the device in Comtrade format. In the command direction, secured switching of switching objects is possible via the protocol. Time synchronization can be supported via the T04 master or via SNTP across the network. Redundant time servers are supported. All auxiliary services on Ethernet such as the DIGSI 5 protocol, network redundancy, or SN for network monitoring can be activated concurrently with T04. Moreover, GOOSE messages of IEC 6850 can be exchanged between devices Station controller IEC 6850 Client DIGSI 5 Station controller IEC Master Station controller DNP TCP, IEC DIGSI 5 Station controller IEC Master.6 Ethernet Switch Client-Server communication via the integrated Ethernet interface Fig..6/8 Star coupler GOOSE ring Serial optical USART module Ethernet module with integrated switch Separate client-server and GOOSE communication via IEC 6850 with further serial connection to an IEC master SIP EN.ai DNP TCP "IEC " Fig..6/9 Ethernet Switch Star coupler Serial optical USART module Ethernet module with integrated switch SIP EN.ai DNP TCP/IEC communication with serial connection to IEC master SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/7

68 Communication Designed to communicate Protocols Serial DNP or DNP TCP DNP is supported as a serial protocol via RS485 or an optical 80 nm interface, and as an Ethernet-based IP variant via the electrical or optical Ethernet module. In conjunction with Ethernet, the switch integrated in the module can be used such that redundant ring structures for DNP can be realized. In this way, e.g. connection to a DNP device via a redundant optical Ethernet ring can be established. Information about a device can be routed and transferred to the DNP protocol, and also the fault records of the device. Switching commands can be executed in the control direction (Fig..6/9). Redundant connection to serial substation controllers can be established via modules or serial double module. With Ethernet, Ethernet modules that can work independently from one another via or networks are to be provided for a redundant connection. For DNP, the network topologies shown in Figs..6/8 to.6/0, page.6/ can also be used for Ethernet-based or serial communication. Synchrophasors protocol via Ethernet (IEEE C7.8) SIPROTEC 5 devices optionally calculate synchrophasors and work as a Phasor Measurement Unit (PMU). These measured values, which are synchronized across large geographic areas via a highly-accurate second pulse, allow for assessment of grid stability. These values are transferred via an Ethernet network with the IEEE C7.8 protocol to a data concentrator. Transfer occurs via an optical or electrical Ethernet module. SIPROTEC 5 devices also offer these synchrophasors via the IEC 6850 protocol in special, logical measured value nodes (Fig..6/0). SUP Slave Unit Protocol This Siemens-specific protocol is used to read out external 0 ma devices (0 ma Box) or temperature sensing devices (thermo box) serially or via Ethernet. These devices are available as accessories to expand SIPROTEC 5 devices with analog interfaces. The measured values of these devices can be further processed in the SIPROTEC 5 device or are used for protection functions such as overload protection or hot spot calculation of transformers. Further Ethernet-based protocols and services Besides the actual protocol application, these services can run in parallel on an Ethernet module, and can be switched on and off by the user with DIGSI 5. Ethernet redundancy with RSTP, PRP and HSR The electrical and optical Ethernet module supports with the redundancy protocol (RSTP, HSR) the con struction of redundant ring structures. With HSR, uninterruptible ring redundancy is achieved with up to 50 devices in the ring. PRP enables uninterruptible communication via parallel networks. These methods can be activated via parameters. They are independent of the substation automation protocol or the chosen auxiliary services. Time synchronization with SNTP The device can poll the absolute time from or time servers via an SNTP server. In redundant operation, both servers are read and the time of the st server is used for setting the device clock with a precision of ms. If this server fails, time synchronization takes place via the second server. In addition to Ethernet modules, SNTP can also be used via the integrated Ethernet interface (port J)..6 Data: Fault records Power Quality Data Phasor Measurement Tools: SICAM PQS SIGUARD PDP KE85 6MD8/7SL8 6MD8/7SL8 7KE85 7SJ Fig..6/0 Generation G Central evaluation of fault records and phasors Distribution.6/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

69 Communication Designed to communicate Protocols Further Ethernet-based protocols and services (continued) Time synchronization with IEEE 588 (in preparation) For greater precision of time synchronization via Ethernet, the IEEE 588 protocol is available. It can be activated on electrical or optical Ethernet modules. The precondition is that the network components, e.g. switches, support the protocol and special IEEE 588 time servers are present in the network. With IEEE 588, the signal propagation times of the time synchronization telegrams in the Ethernet network are measured so that the terminal devices, e.g. SIPROTEC 5 receive time information that is corrected by the signal propagation time, providing more precise timing than SNTP. The Power Profile IEEE 588 C7.8 is supported and the devices function as ordinary clocks (terminals) in the network. Network monitoring with SN The device can be integrated in network monitoring or network management systems via the SN V protocol. Extensive monitoring variables, e.g. the state of the Ethernet interfaces, their data throughput etc., can be made known to the monitoring system via MIB (Management Information Base) files. These variables are described in data-specific terms in MIB files and can be cyclically read out and monitored by the monitoring system. No values can be changed in the device via SN. It serves exclusively as a diagnosis interface. Transfer of data via the protection interface The protection interface and protection topology enable data exchange between the devices via synchronous serial point-topoint links from 64 kbit/s to MBit/s. These links can be established directly via optical fibers or via other communication media, e.g. via dedicated lines or communication networks. A protection topology consists of to 6 devices, which communicate point-to-point via communication links. It can be struc- tured as a redundant ring or as a chain structure (see Fig..6/), and within a topology the protection links can have different bandwidths. A certain amount of binary information and measured values can be transmitted bi-directionally between the devices depending on the bandwidth. The connection with the lowest bandwidth determines this number. The user can route the information with DIGSI 5. This information has the following tasks: Topology data and values are exchanged for monitoring and testing the link Protection data, for example differential protection data or direction comparison data of the distance protection, is transferred. Time synchronization of the devices can take place via the link, in which case a device of the protection topology assumes the role of timing master. The link is continuously monitored for data faults and failure, and the runtime of the data is measured. 5 5 Fig..6/ km with 6.5 μm/5 μm multimode optical fiber X G70. Communications converter 5 Communication 5 PI o e e o PI network Fig..6/ SIPROTEC 5 SIPROTEC 5 Module type: USART-AD-FO USART-AD-FO USART-AE-FO USART-AE-FO Protection communication via a communication network with X or G70. (64 kbit/s / G70.6 ( Mbit)) interface km with 6.5 μm/5 μm multimode optical fiber 5 -wire copper cables 5 o e PI e o PI Fig..6/ PI Type x PI Type x SIPROTEC 5 PI Type x SIPROTEC 5 Protection topology 4 ends differential protection and binary input signals PI Type x PI Type x SIPROTEC 5 PI Type x SIPROTEC 5 SIPROTEC 5 5 kv fix SIPROTEC 5 Module type: USART-AD-FO/ST USART-AE-FO/ST SIP5-004.EN.ai Communications converter Protection communication via a copper connection SIP5-00.EN.ai Protection communication of the differential protection and transfer of binary signals SIP5-006.EN.ai SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/9

70 Communication Designed to communicate Protocols Transfer of data via the protection interface (contin.) Protection links integrated in the device have previously been used for differential protection (Fig..6/) and for teleprotection of the distance protection. In addition to these protection applications, you can configure protection links in all devices in SIPROTEC 5. At the same time, any binary information and measured values can be transferred between the devices. Even connections with low bandwidth, e.g. 64 kbit/s can be used for this. Protection links that mainly serve to transfer data for the differential protection are designated type links and are used in the 7SD8 and 7SL8 devices. Links for transferring any data that can be configured in the other devices (e.g. 7SA8, 7SJ8), are type. Protection interfaces must be of the same type on both sides. Figs..6/ to.6/7 show possible communication variants for establishing protection communications. km with 6.5 μm/5 μm multimode optical fiber X G70. Communications converter 5 Communication 5 PI o e e o PI network SIPROTEC 5 SIPROTEC 5 Module type: USART-AD-FO USART-AD-FO USART-AE-FO USART-AE-FO SIP5-004.EN.ai μm/5 μm single mode optical fiber PI PI FO direct connection Fig..6/6 SIPROTEC 5 SIPROTEC 5 Module type: Single module USART-AF-LDFO/4 km/duplex LC Double module USART-AW-LDFO/4 km/ x duplex LC Single module USART-AG-LDFO/60 km/duplex LC Double module USART-AU-LDFO/60 km/ x duplex LC Single module USART-AK-LDFO/00 km/duplex LC Double module USART-AV-LDFO/00 km/ x duplex LC Protection communication via direct fiber optic connections 40 km with 9 μm/5 μm with 5 a single mode optical fiber 5 PI FO direct connection PI SIPROTEC 5 SIPROTEC 5 Single module USART-AH-LDFO/simplex LC Single module USART-AJ-LDFO/simplex LC SIP5-009.EN.ai SIP5-000.EN.ai Fig..6/4 Protection communication via an IEEE C7.94 ( MBits/s) interface direct fiber optic connection to a multiplexer Fig..6/7 Protection communication via a single mode fiber km with 6.5 μm/5 μm multimode optical fiber Repeater 5 5 PI o e e 9 μm/5 μm o PI single mode SIPROTEC 5 optical fiber SIPROTEC 5 up to 70 km Fig..6/5 Module type: USART-AD-FO/ST USART-AE-FO/ST Protection communication via single mode fiber and repeater SIP5-005.EN.ai.6/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

71 Communication Designed to communicate Applications for communication Ethernet Network topologies Regardless of the selected protocol (IEC 6850, DNP) the electrical and optical Ethernet module are supported by different network topologies. If the module works without an integrated switch that can be switched off through DIGSI 5, it is connected to external switches individually or redundantly. In the case of a double connection, only one interface processes the protocol applications (e.g. IEC 6850). The second interface works in Hot Standby and the connection to the switch is monitored. In the case of failure of interface, a switch is made to interface within just a few milliseconds (Fig..6/8). Electrical or optical rings with a maximum of 40 devices can be established with an integrated switch (Fig..6/9). Both interfaces of the module transmit and receive simultaneously. Mixed operation with SIPROTEC 4 devices is possible in the ring with a maximum of 0 devices. A special ring redundancy process, based on RSTP, ensures short recovery times in case of failure of a device, so that the protocol applications continue running nearly interruption-free. This configuration is also independent of the protocol application that runs on the Ethernet module. Seamless redundancy PRP and HSR New technologies reduce the time for reconfiguration of communication networks in case of interruptions to about nothing. These technologies are: PRP = Parallel Redundancy Protocol HSR = High Available Seamless Ring Redundancy Both systems have the same principle and are specified in IEC The same information (Ethernet frame) is being sent over two ways. The receiver takes the first that comes in and discards the second one. If the first does not get through, the second one is still available and will be used. The mechanism is based deeply in the Ethernet stack, means one MAC and one IP address for both. PRP uses two independent Ethernet systems. This means double amount of network equipment and respectively cost, but it is simple. HSR is using the same principle, but in one Ethernet network in a ring configuration. The same information (Ethernet frame) will be sent in the two directions into the ring, and the receiver gets it from the two sides of the ring. This means some more effort in the devices but saves the costs for a second Ethernet network. The methods can be activated via a setting parameter and do not have any further parameters. They are therefore easy to set. The number of network nodes is limited to 5 in both methods. HSR and PRP can be combined by so called Redboxes (Redundancy Boxes). This cost-effective solution of Fig..6/ can be achieved by: switches at the control room switches in the field Redboxes (RB) per HSR ring Up to 50 devices per HSR ring Easy expansion by additional PRP switches. Switch IEC / DNP Master Star coupler Serial connections IEC / DNP Master Star coupler SIPROTEC 5 Device Device Device n Fig..6/0 Switch SIPROTEC 5 SIPROTEC 5 SIPROTEC 5 SIPROTEC 5 Fig..6/8 Switch Fig..6/9 Simple or redundant connection to external switches Redundant substation control connection Ethernet ring SIPROTEC 5 IEC 0 via serial double module, or independent serial modules Redundant optical connection of devices to IEC or DNP master (e.g. SICAM PAS) Switch Circuit operation with integrated switch and ring redundancy SIP5-00.EN.ai SIP5-00.ai SIP5-00.EN.ai SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

72 Communication Designed to communicate Applications for communication... Switch PRP-A.4.5 PRP-B Switch A RB up to 50 devices on the ring RB B.9 Switch RB RB Switch. RB RB. Redbox..4 RB = Redbox non HSR devices Fig..6/ Most cost-effective seamless n- structure Serial redundancy Redundant connection to substation controllers, e.g. SICAM PAS, is possible via independent, serial plug-in modules or a serial double module. The serial IEC protocol or the serial DNP protocol, for example, can run on the modules. Mixed operation is also possible. Fig..6/0 shows a serial optical network that connects each of the serial protocol interfaces of the device to a master. The transfer occurs interference-free via optical fibers. For the IEC protocol special redundancy processes are supported in the device. Thus, a primary master can be set that is preferred over the nd master in the control direction. The current process image is transferred to both masters. Redundancy in communication You as the user can realize different levels of redundancy. The number of independent protocol applications running in parallel is limited by the 4 plug-in module positions. A serial protocol can be run times on a double module. But it can also be realized on modules. Different serial protocols can be run in the device simultaneously, e.g. DNP and IEC 0. Communication occurs with one or several masters..6/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

73 Communication Designed to communicate Applications for communication Redundancy in communication (contin.) The Ethernet module can be plugged into the device one or more times. This allows the same or different protocol applications to be executed multiple times. For IEC 6850 several networks are possible, e.g. one for client-server communication to a substation controller and a nd for the GOOSE connections between the devices that could be assigned to the process bus (Fig..6/). Through the client-server architecture of IEC 6850, one server (device) can simultaneously send reports to a maximum of 6 clients. The doubling of the interfaces on the Ethernet module enables the establishment of redundant network structures, e.g. optical rings or the redundant connection to switches. Protection links can be implemented in double. If one connection fails, a switch is made to the nd connection. Integrated setting of communication in DIGSI 5 A communication protocol is configured with DIGSI 5. According to module type, DIGSI 5 offers the user the selection of the respective, permissible protocols/applications. The protocol parameters are set (e.g. baud rate, IP address etc.). Then the module is initialized with the protocol application and, for example, a serial module with the IEC and DNP protocol and the communication parameters are loaded. DIGSI 5 Station controller IEC 6850 Client Station controller IEC Master.. Ethernet Switch.4 Star coupler Serial optical USART module.5.6 Client-Server communication via the integrated Ethernet interface.7 GOOSE ring Ethernet module with integrated switch SIP EN.ai Fig..6 / S eparate client-server and GOOSE communication via IEC 6850 with further serial connection to an IEC master For an application template of a device there is an appropriate communication mapping (Fig..6 / ). In a communication matrix, the user modifies this mapping and erases and completes his own information. This mapping file is finally loaded by DIGSI into the device, and determines the scope of information that is provided via the protocol. Protocol mappings can be copied between devices, if they contain the same functions, and can be exported into substation control applications..4.5 Time synchronization Time synchronization can occur through or timers. Depending on time source, precision of ms is attained. Events are logged with a date and time with ms resolution (Fig..6 / 4). The following sources are possible, and can be configured independently as a st or nd timer:. Fig..6 / C ommunication assignment with DIGSI 5 for the IEC protocol.6 Port G for IRIG-B- or DCF77 telegram. A highly precise second pulse can also be launched there for special applications.7 Protocol interfaces via plug-in modules (SNTP in IEC 6850, IEC , DNP etc.).8 SNTP via port J (integrated Ethernet interface IEC ).9.0 Via a protection interface from the timing master Via the DIGSI 5 protocol (not cyclical) Internal time with integrated Quartz The device is prepared for a highly precise synchronization via an Ethernet module with the IEEE 588 (accuracy µs). Time synchronization in the device is battery-buffered. Thus the internal clock continues to run with the Quartz precision of the device even in case of failure of the auxiliary voltage. Fig..6 / 4 Time settings in DIGSI SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

74 Communication Designed to communicate Applications for communication.. Grid control center..4 Station controller IEC or DNP Company network TCP/IP Station operator console IEC or DNP TCP.5 Station bus.7 Serial Hub.8.9 DNP IEC or DNP IEC or DNP Ethernet TCP/IP Serial Hub IEC or DNP RTU IEC 6850/DNP IEC DNP TCP SIP EN.ai.6.. Fig..6/ 5 Communication protocols in the Substation automation and power control systems For you, designed to communicate in SIPROTEC 5 means: Adaptation to the topology of your communication structure using settings (ring, star or network) S calable redundancy in hardware and software (protocols) to match your requirements Pluggable, upgradeable communication modules E xtensive routines for testing connections, functions and operating workflows.6 / 4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

75 IEC 6850 Simply Usable Simply usable Engineering in user language IEC 6850 is more than just an Ethernet-based substation control protocol. It comprehensively defines the engineering process, data and service models, conformity testing, and end-to-end communication in control systems. In Edition, the influence of the standard is extended to more sectors of the energy industry. Ethernet-based substation automation protocol IEC 6850 is more than just a substation automation protocol. The standard comprehensively defines data types, functions and communication in station networks. In Edition, the influence of the standard is extended to more sectors of the energy industry. Siemens actively participated in designing the process of adapting Edition for Edition for the purposes of the standardization framework. Edition fills in certain omissions and defines additional applications. As a global market leader with Edition SIPROTEC 4 devices, between Editions and we have solved the issues of interoperability, flexibility and compatibility: Cooperation with Edition devices is possible without difficulties. The internal structure of SIPROTEC 5 devices conforms to IEC The net result is that first time integrated, end-toend system and device engineering from the single plant line to device parameterization conforming to the guiding principles of IEC 6850 is possible. For you, IEC 6850 simply usable means: IEC 6850 system specification and system description DIGSI 5 helps to make the IEC 6850 data model easy to manage DIGSI 5 supports the IEC 6850 engineering process and the system specification Flexible data object engineering enables simple, efficient operating concepts Interoperability with IEC 6850 Edition DIGSI 5 with integrated IEC 6850 engineering covers the complexity of the standard with a sophisticated operator guidance system. In standard engineering, you as the user will not be required to deal with the details of IEC 6850: you will be addressed in your user language. In the user language, distance protection is distance protection with zones and dependent functions, not a collection of logical nodes. Reports are message lists in which information about the systems control is configured. GOOSE connections are simply configured in the system configurator with source and target information. You work in your language, with functions and messages associated with a device. If you wish, you can view the allocated IEC 6850 objects in the IEC 6850 protocol language. This bilingualism is supported throughout the user interface by DIGSI 5 and the export files on the substation control system. As the user you can even add helpful notes to the data points you define in your language, and then export them for data purposes in the ICD and SCD description Fig..7/ System specification and configuration in DIGSI 5 the complexity of IEC 6850 does not reach the interface Fig..7/ GOOSE editor in DIGSI SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/

76 IEC 6850 Simply Usable Simply usable Flexible engineering Flexible engineering offers IEC 6850 experts a wide range of freedom with regard to designing their own IEC 6850 structure, including with user-defined functions and objects. Flexible object modeling, freedom in addressing objects and flexible communication services assure the highest possible degree of interoperability and effective exchange and expansion concepts. The name of the logical device (ldname) is freely editable. For example, the standard-conforming name CTRL can be changed to CONTROL. Structural changes can also be made by changing the logical device (LD), so that the interface structure can be flexibly adapted to the user s own requirements. Rigid manufacturer specifications are a thing of the past. Prefix and instance of the logical node (LN) can also be edited. The standard fixes the length and rules that are checked by DIGSI 5 when they are entered. Function levels of a device, which the standard maps to Logical Nodes (LN), can be deleted, copied, and extended with the user s own objects. Messages can be added to a switching object such as the LN XCBR, e.g., monitoring messages for a circuit breaker that have not been defined in the original LN. As the user, you can organize all of the information associated with a given switching object in a Logical Nodes (LN). Logical Nodes (LN) can be added from a library. These instructions can be supplemented with your own objects. You can also define and create generic nodes. For example, there are Logical Nodes (LN), whose functionality is extended by the user. These user-defined functions can be loaded into the device and run there. Monitoring functions can be created and expanded as required. A high degree of flexibility in communication is offered for configuration GOOSE messages and reports. Addresses, dataset names etc, can be set by you the user. Flexible engineering offers a high degree of design freedom on many levels, enhancing interoperability for more complete communication interchangeability. With the single line diagram, you as the customer can view the topological structure of the system. DIGSI 5 has been prepared so that it can export this topological structure of a system to the IEC 6850-conforming SSD file. This description as an extension of the SCD file represents the primary system for technical data purposes. In the future, the objects of the device with which processes of the primary system are controlled can be adapted flexibly to reflect the customer s specifications. Flexible engineering is the key to bringing the system view into harmony with the IEC 6850 structure of the device..6 Fig..7/4 Editor for adapting the IEC 6850 structure in the SIPROTEC 5 view Fig..7/ Generating datasets and reports for IEC 6850 IEC 6850 simply usable with SIPROTEC 5 means: Converting the complexity of the IEC 6850 data model into your familiar user language Integrated, consistent system and device engineering (from the single line to the complete system and device parameterization on the basis of the IEC 6850 data model) Flexible object modeling, freedom in addressing objects and flexible communication services assure the highest possible degree of interoperability and effective exchange and expansion concepts Full compatibility and interoperability with IEC 6850 Edition.7/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

77 Test and Diagnostics Holistic workflow DIGSI 5 Test Suite SIPROTEC 5 devices are equipped with extensive test and diagnostics functions. These are available to users in SIPROTEC 5 in conjunction with DIGSI 5 and they shorten the testing and power-up phase significantly. The integrated test sequencer The objective of the extensive test and diagnostic functions that are made available to the user with SIPROTEC 5 together with DIGSI 5 is to shorten testing and power-up times. All test functions are integrated in DIGSI 5. This enables engineering including the device test to be carried out with one tool. The most important functions should be listed as examples here. There are also other specific test functions depending on the device type. An innovative concept enables functions to be tested via the test sequencer integrated in the device. Normally, the device receives analog and binary signals from the process or from an external secondary test equipment. Previously, the protection functions and communication were tested with variables such as these. With SIPROTEC 5 devices these variables can now be substituted with values supplied from an integrated test equipment in a simulation mode. For this, the analog and binary inputs are decoupled from the process and connected to the integrated test sequencer. The tester uses DIGSI 5 to create a test sequence, e.g., a short-circuit sequence, loads it into the device and runs it in simulation mode. The test sequencer in DIGSI 5 is capable of handling test sequences consisting of up to six test steps. When loaded into the device, this test sequence is run in real time and simulates the functions of the device like a real process at binary and analog inputs. Protection functions, control, logic functions, and communication can thus be tested in real time without secondary test equipment. The test sequence is started manually from DIGSI 5 or controlled via a binary input. This also makes it possible to test the interaction between several devices. The DIGSI 5 Test Suite offers: Hardware and wiring test Testing for functions and protection functions Circuit-breaker test and AR test functions Communication test including loop test Protocol test Hardware and wiring test In the hardware test, the state of the binary inputs can be read out by DIGSI 5, and contacts and LEDs can be switched or routed through DIGSI 5 for test purposes. The parameters measured at voltage and current inputs are represented in vector diagrams divided according to magnitude and phase angle (Fig..8/). Thus it is easy to detect and check if the connections in the measurand wiring are transposed, as well as the vector group or the direction between current and voltage. In devices that are connected via protection interfaces, even analog measurement points of remote ends can be represented as vectors. This makes it easy to check the stability of a differential protection. In the wiring test, the wiring connections between devices are tested. If the devices are connected to a network via Ethernet, this test can be carried out with unprecedented ease. For this, the contact on a device is closed with the aid of DIGSI 5. This contact is connected to a binary input of one or more SIPROTEC 5 devices via a wire connection. These automatically send a report to DIGSI 5 to the effect that the binary input has been activated by the closing of the contact. The tester can then log this test and check the wiring between the devices Fig..8/ Display of analog measuring points in vector diagrams SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/

78 Test und Diagnostics Holistic workflow DIGSI 5 Test Suite Testing device functionality and protection functions The graphical representation of characteristic curves or diagrams of protection functions not only help the engineer who parameterizes the test functions, but also the engineer who tests them (Fig..8/). In this test, the operating point of a protection function is represented graphically in the diagrams, e.g., the calculated impedance of a distance protection in the zone diagram. Additionally, messages relating to the protection function are logged, e.g. pickup or operate. This test can be carried out with signals from the process or with the test equipment integrated in the device. Circuit-breakter test and AR test function Switching sequences can be initiated via DIGSI 5 to test the automatic reclosing (AR). However, this is only possible if remote switching via the key switch is permitted. In addition, a security prompt (confirmation ID) must be entered for switching authorization via DIGSI 5. There are additional security prompts for non-interlocked switching. This provides protection against unauthorized use or inadvertent actuation during operation. A circuit-breaker test can also be deactivated and activated without an interlocking check. Communication testing Since communication is an integral component of the devices and they are interconnected either directly or via a substation control system, they must be thoroughly tested at commissioning and monitored continuously during operation. The integrated test tools assist the user in ensuring that the communication paths are tested and monitored efficiently. Loop test for the protection interface This test is launched by DIGSI 5 for a communication module and a selected interface. It is used to detect faults in subsections when inspecting the physical connection of the communication path (Fig..8/). Test telegrams are sent from the transmitting side Tx of an interface, and these are measured again at the receiving interface Rx. The user thus has the capability to insert loops at various points in the communication network and to test the connection of the loop. The number of telegrams sent, received and corrupted is displayed continuously in DIGSI 5, so that the quality of the connection can be monitored. Fig..8/ Fig..8/ Test of protection function with operating point of the protection function in response characteristic curve Rx Tx Fiber optic Communication converter Copper Auxiliary conductor connection Communication converter Copper LOOP # LOOP # Loop test for protection interfaces Optical loop Online monitoring of communication connections The data flow at communication interfaces can be constantly monitored. To do this, the number of telegrams that are sent, received and corrupted per time unit for serial connections and Ethernet intefaces during operation is constantly measured and displayed. If faults occur, an alarm can be issued. A network management and monitoring system performs detailed monitoring of Ethernet modules via the SN protocol. For protection interfaces the delay time of the signals is also monitored, and it is calculated during synchronization by means of a highly precise second pulse in the transmit and receive direction. Additionally, the communication topology is also monitored constantly there and displayed in DIGSI 5. GOOSE connections can be monitored permanently at the receiving site during operation. This means that an outage is detected within a few seconds. SIP5-004.EN.ai.8/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

79 Test and Diagnostics Holistic workflow DIGSI 5 Test Suite Protocol test For the protocol test, specific signal values are set and reset using DIGSI 5 (Fig..8/4). The test mode itself is configurable. The device sends the selected value to the client using the configured communication protocol e.g., IEC In this case, a report is generated or a GOOSE message is sent automatically when this information is switched correspondingly. The device can be used to test substation control information for all protocols (e.g., IEC 6850, IEC , serial DNP, DNP TCP) without the going through the process of generating signal states with a test equipment. Signals that are transmitted across protection interfaces can also be tested Test and display of external timers Fig..8/4 Protocol test for substation automation technology or for GOOSE and protection interfaces..4 If the system time of the device is set externally using or timers, this time can be read out in the device or with DIGSI 5. When the time protocol returns these values, it indicates which timer is setting the system time and issues a statement regarding the quality of the time source. Synchronization via external clocks can thus be monitored and displayed during operation (Fig..8/5) Fig..8/5 Test of external timers SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/

80 Test und Diagnostics Holistic workflow DIGSI 5 Test Suite Analysis of function charts (CFC debugging) Logic plans prepared in the form of function charts (CFCs) can be tested offline in DIGSI 5. To this end, test sequences can be generated with the DIGSI 5 Sequencer to act on logical inputs of the function chart or the analog and binary inputs of the device. This makes it possible to test not only the function chart but also its interaction with upstream and downstream functions. During this test, the values of variables are displayed and changes over time are logged in records that can be analyzed later, e.g., with SIGRA. This enables even complex temporal dependencies to be analyzed with ease. Function charts (CFC) can thus be created offline in the office and tested without using a device... Fig..8 / 6 Easy analyzing of function charts For you, using the DIGSI 5 Test Suite means: Considerably shorter testing and commissioning time Commissioning support personnel in the adjacent substation is no longer required A ll test routines performed are documented Testing without secondary test equipment is also possible.8 / 4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

81 Safety Concept Safety and security inside Safety Safety for personnel and equipment are first priority, but availability is also critically important. And as the plant landscape becomes more and more open and complex, the conventional security mechanisms are no longer adequate. For this reason, a security concept has been implemented in the SIPROTEC 5 device architecture that is designed to address the multidimensional aspects of security in a holistic approach. Multilayer safety mechanisms in all links of the safety chain provide you with the highest possible level of safety and availability. Security/IT Security: Prevention of threats presented by people and the environment during operation People/Environment Technological system Safety and Cyber Security includes: Security concept in device design Information security against IT attacks (IT threats from the outside) Safety: Prevention of dangers presented by a technological system People/Environment Technological system SIP EN.ai Fig..9/ Graphic of distinction between safety and security.5 Multilayer safety mechanisms Safety comprises all aspects of protection for personnel and primary equipment installations. The devices and DIGSI 5 support this from the functional standpoint. Cyber Security measures ensure secure operations in networks. The manufacturer can support the user with these measures. The responsibility to implement a comprehensive Cyber Security concept lies with the operator of the system. The concept must consider all system components with regard to all technical aspects of Cyber Security. Safety in the hardware design The device system consisting of configured hardware building blocks, each with its own cooling system, reduces thermal load, prolongs service life and enables error-free operation in a wide ambient temperature range. High availability is achieved with the auxiliary power supply concept. Central wide range supply ensures the provision of a common voltage to all components. Individually required voltage levels are created in the modules concerned. Thus, the possible outage of a local voltage level causes only one module to malfunction, not the entire device. This selective outage is reported. Crossover wiring of internal analog/digital converters enables the device s analog inputs to be monitored effectively and potentially threatened functions to be blocked early, like differential protection if a current channel fails. Storage of calibration data in the analog acquisition module enables completely safe exchange or extensions within the module unit. Fully pluggable terminals and plug-in module mean that a wiring test is no longer necessary when devices or modules are replaced. Now that the current transformer is integrated in the terminal block (Safety CT-Plug), open secondary current circuits cannot occur anymore during replacement of a device or a module. When the terminal is pulled out, the transformer is always opened on the safe, secondary circuit. The device does not need to be opened to adjust binary input thresholds or adapt them to the rated current of the transformer ( A, 5 A). The device does not need to be opened to replace the battery or change the plug-in modules. Monitoring functions Comprehensive monitoring functions ensure secure operation by fast detection of irregularities and automatic initiation of appropriate measures to avert incorrect responses. Depending on the severity of the irregularity detected, a warning may be issued, the functions concerned be blocked, or the entire device may be isolated by disconnecting the life contact. In all cases, the diagnostic buffer outputs the cause and appropriate take-action instruction SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

82 Safety Concept Safety and security inside Safety Hardware monitoring All hardware in the device is continuously monitored. This includes for example the CPU, the auxiliary voltage, the battery status, the internal clock, the storage modules, the analog inputs, the bus connections, the expansion and communication modules. Monitoring of the analog inputs As a data source for the protection functions, monitoring of the analog inputs is assured in multiple stages. Some monitoring functions are primarily dedicated to the commissioning (incorrect or missing connections) and only generate a warning indication. These include: Current and voltage balance Current and voltage sum Phase-rotation supervision. Other monitoring functions detect outages during operation and rapidly initiate blocking of the affected functions: Fuse failure monitor (loss of voltage) Fast current sum supervision and broken wire monitoring for the power circuits. In addition, the proper working method of all analog-digital converters is assured by plausibility monitoring at the sampling level. Tripping circuit monitoring (ANSI 74TC) The circuit-breaker coil and its feed lines are monitored via two binary inputs. If the tripping circuit is interrupted, and alarm indication is generated. Communication connections Telegrams are monitored for correct transmission. Faults are reported via warning messages. Data associated with protection and control is transmitted via protection interfaces and IEC 6850 GOOSE messages. The transmitted information is also monitored constantly on the receiving side. Monitoring of protection interfaces -bit CRC checksum monitoring compliant with CCITT/ITU for detecting corrupted telegrams Invalid telegrams are flagged and are not used by the protection system Sporadic interference is ignored, persistent interference triggers blocking of the affected protection (differential protection) and control functions Propagation times are measured and taken into account for purposes of differential protection The topology of the protected area is monitored. Outages in the communication connections automatically trigger switching to other communication paths (ring to chain operation or hot standby), or otherwise to blocking the entire protected area. The same applies if outage of a device in the topology is detected. Monitoring of IEC 6850 GOOSE messages CRC checksum monitoring, sequence number monitoring and repetition time monitoring for detecting incorrect or missing telegrams Applications consider the state of GOOSE messages that are corrupt or transmitted under test conditions and switch to safe mode. Load management The free configurability of protection functions and function charts (CFC) enables them to be adapted to an enormous range of applications. During engineering with DIGSI 5, the integrated load model calculates the resulting device load. This ensures that only viable configurations can be loaded into the device. Standardized management of device modes Test modes and the health status of information are forwarded and handled uniformly and consistently throughout the entire system. Analysis functions take the modes into consideration and guarantee secure operation. This is particularly critical when protection and control-related data is transmitted via protection interfaces and IEC 6850 GOOSE messages. But it applies equally for signal processing in the function charts (CFC)..7 Input signals (analog) Input signals (discrete) i A i B i C i N ADU i A (SC); i B (SC); i C (SC); i N (SC) Monitoring Current: i N (SC)= i A (SC) + i B (SC)+ i C (SC).. Voltage: V 0 (SC)= (V A (SC)+ V B (SC)+ V C (SC))..4.5 V A V B V C ADU V A (SC); V B (SC); V C (SC); V 0 (SC) Condition satisfied: Measuring circuit OK SIP EN.ai.6 V da-dn (V 0 ).7 Fig..9/ Monitoring of analog input circuits for malfunctions during analog-to-digital conversion.9/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

83 Safety Concept Safety and security inside Cyber Security Cyber Security With the increasing integration of field devices in Ethernetbased communication networks, communication must be secured against internal faults and attacks from outside. Standards such as NERC CIP (North American Electric Reliability Corporation Critical Infrastructure Protection) and the BDEW Whitepaper contain requirements for the safe operation of devices in the critical communications infrastructure, and are directed at both manufacturers and operators (requirements for secure control and telecommunication systems by the Bundesverband der Energie- und Wasserwirtschaft e.v. German Association of Energy and Water Industries). Cyber Security must be incorporated into the design of devices right from the start. This has been carried out systematically in the case of SIPROTEC 5. Measures in the hardware ensure that key material for protecting the communication and datasets of a device is stored in absolute security. Communication stacks that are hardened against cyber attacks, a multistage access concept in operation and permanent logging of all authorized and unauthorized access attempts and of critical Cyber Security actions provide the operator with a high degree of Cyber Security when the devices are integrated in the operator s network. Unused Ethernet services can be disabled. For example, if the RSTP ring redundancy protocol is not being used, as the user you can disable it with DIGSI 5 (Fig..9/). This gives a potential attacker no open interfaces and only services that are really in use are activated in a network. Product Security Blueprint Fig..9/ Isolatable communication services during access via Ethernet networks Corporate / transfer / network Device Lan on Substation Control Network Remote DIGSI PC Substation Server Network SICAM PAS w. NTP Server DIGSI 5 PC The Product Security Blueprint in conjunction with the Application Note SIP5-APP-009 for SIPROTEC 5 devices provide you with valuable notes in integrating devices in your network and operating them securely. An overall security concept should be drawn up and maintained in a Spanning Security Blueprint. This documents typical network configurations, the services used, and their ports. Measures for updating that components that are critical for Cyber Security, password protection and antivirus protection are also described. Fig..9/4 shows a recommendation of this kind for protecting a switchgear. The SIPROTEC 5 devices are integrated in optical Ethernet rings via switches. In these rings, the respective Ethernet-based substation automation protocol, e.g., IEC 6850 or DNP and the systems control run without loss of performance. Accesses from a non-secure external network are allowed via a gateway that is responsible for safeguarding the network. The accessing party is authenticated, e.g., by DIGSI 5, in the gateway, and communication is encrypted via VPN. This is fully supported by the communication services of DIGSI 5. The technical control network and the network for remote access can also be separated entirely by appropriate selection of an independent Ethernet port for communication between the device and DIGSI 5. This falls within the scope of the operator s philosophy. With their concept of pluggable modules, the devices also enable solutions with separate networks. An extensive range of Cyber Security features have been integrated in SIPROTEC 5 and DIGSI 5, and these are described in the next section. Fig..9/4 Fig..9/5 Secure operation of devices within a switchgear with remote access from an external network Settings dialogs for passwords and security prompts SIP EN.ai SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

84 Safety Concept Safety and security inside Cyber Security Multilayer access security for device and DIGSI 5 DIGSI 5 offers many useful functions to help with configuration and testing. It is often not desirable to have to enter confirmation codes during this phase. In contrast, the reading of data in the operating state is at the focus. Reparameterization and switching are then Cyber Security-critical operations that lead to faults in the operating state if they happen inadvertently or without authorization. Comprehensive access security can be activated in the device after commissioning has been completed: Secure authentication take place between the device and DIGSI 5. This precludes another program from accessing the devices and reading or writing data there. Establishment of the remote connection via Ethernet only after the user s password has been entered. This connection password conforms to the Cyber Security requirements for assigning passwords defined in NERC CIP. It has 80 characters and must include upper and lower case letters, digits and special characters. Once the connection has been successfully established, the user has only read access to the device. Subsequent data exchange then takes place via an encrypted, uninterceptable connection through an Ethernet module. Incorrect password entries are identified and logged. An alarm can be triggered via an independent telecontrol link. Cyber Security critical operations such as remote access or reparameterization are recorded continuously. These entries cannot be deleted from the device. They can be transmitted to the substation automation unit and archived there. All data that can be loaded into the device via DIGSI 5 is signed. In this way, corruption from outside by viruses or trojans is reliably detected and prevented. It is not possible to load manipulated data into the device. Security-Patch-Management (Security updates) for DIGSI 5 In response to the requirements for protecting power equipment, patch management was introduced for DIGSI. This means that regular security patches for the software components from third-party vendors integrated into our products or used by our products are tested for compatibility with our products. A list of available security updates and compatibility notes is made available for downloading in the Internet and is updated at monthly intervals. T hen, confirmation codes are requested for security-critical actions that have write access to the device, for example changing parameters. These can be configured by the user and there are various confirmation codes for the protection and control functionality (Fig..9 / 5, page.9 / ). These Cyber Security measures during remote access to the device with DIGSI 5 ensure secure communication. A further layer of protection for the user is provided by the query for individual passwords when logging into the device and carrying out write access actions, which are critical for Cyber Security purposes For you, safety and Cyber Security mean: L ong-lasting, rugged hardware with outstanding EMC immunity and resistance to weather and mechanical loads. S ophisticated self-monitoring routines identify and report device malfunctions immediately and reliably. Conformance with the stringent Cyber Security requirements defined in the BDEW Whitepaper and NERC CIP.4.5 Encryption along the entire communication segment between DIGSI 5 and the device.6 Automatic recording of access attempts and securitycritical operations on the devices and systems.7.9 / 4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

85 SIPROTEC 5 Devices Answers for infrastructure and cities.

86 SIPROTEC 5 Devices Chapter. Device Types.. Relay Selection Guide..4 Application Examples..5 Application Examples SIPROTEC 7SJ8, 7SJ Line Protection.5..7 Distance protection SIPROTEC 7SA84, 7SA86, 7SA87.8 L ine differential protection SIPROTEC 7DS84, 7SD86, 7SD87.9 Combined line differential and distance protection SIPROTEC 7SL86, 7SL87.. Breaker management SIPROTEC 7VK87 O vercurrent protection SIPROTEC 7SJ86. Transformator Protection SIPROTEC 7UT85, 7UT86, 7UT Motor Protection SIPROTEC 7SK8, 7SK85.7 Busbar Protection SIPROTEC 7SS85.8 Bay Controllers SIPROTEC 6MD85, 6MD86.9 Digital Fault Recorder SIPROTEC 7KE / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

87 Device Types. 7SJ85 7UT8 7SK85 7KE85 6MD8 6MD8 7SA87 7SD87 7SJ86 7SL87 7SS8 7KE85 7VK87 7SJ85 7UT8 6MD8 7SS8 7KE85 7SA84 7SA86 7SJ85 7SJ86 7SD84 7SD86 7SL86 7SJ8 7SJ85 7UT8 7KE85 7SA84 7SA86 7SD84 7SD86 7SJ8 7SJ85 7SK8 7SK M.8 G M.9. G.. Fig../ Application areas of SIPROTEC 5 devices.4 Fig../ provides an overview of the application of S IPROTEC 5 devices in the grid. This is a simplified illustration. Particularly with the advent of regenerative suppliers, energy is being injected into the grid at all voltage levels. The protection objects are the busbars, the overhead lines or cables, and the transformers. The corresponding protection devices have been assigned to these objects. On the next pages you ll find beside the SIPROTEC 5 relay selection guide the application examples for SIPROTEC 5 devices. Device types Now that you have been introduced to the innovation highlights of the SIPROTEC 5 devices, the following text will describe the devices. They are easily identified with the aid of a five-digit abbreviation code. The first digit (6 or 7) stands for the digital equipment. The two letters describe the functionality, and the last two digits identify typical properties. For further details, please refer to the catalog section of the respective device description. Definition of device types based on designation Fig../ Main protection functions 7 XX YY Definition of device types Distinguishing features Protection functions Overcurrent protection Overcurrent protection with PMU and control Line protection Distance protection with PMU and control Line differential protection with PMU and control Combined line differential and distance protection with PMU and control Circuit-breaker management device with PMU and control Overcurrent protection for lines with PMU Transformer differential protection Transformer differential protection with PMU, control and monitoring Motor protection Motor protection with PMU and control Busbar protection Busbar protection Bay controller Bay controllers for control/interlocking tasks with PMU and monitoring, optionally with protection function Fault recorders and power quality recorders Digital fault recorder with PMU Table./ Device types 7SJ8, 7SJ85 7SA84, 7SA86, 7SA87 7SD84, 7SD86, 7SD87 7SL86, 7SL87 7VK87 7SJ86 7UT85, 7UT86, 7UT87 7SK8, 7SK85 7SS85 6MD85, 6MD86 7KE85 Available device types of the SIPROTEC 5 system SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

88 Relay Selection Guide Function overview SIPROTEC 5.. ) in preparation ) via CFC ) IO number of a standard variant (increased configuration available using the SIPROTEC 5 system).4 Abbr. 7SA86 7SA87 7SD84 7SD86 7SD87.7 Functions Protection functions for -pole tripping -pole Type ANSI 7SA Line differential protection. = basic = optional (additional price) = not available Line protection Protection functions for -pole tripping -pole 4 Locked rotor protection I> + n< Distance protection Z< 4 Overexcitation protection V/f 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection V< 7Q Undervoltage-controlled reactive power protection Q>/V<. Directional power supervision P<>, Q<>. 7 Undercurrent protection, underpower I<, P< 8 Temperature supervision Θ> 46 Unbalanced-load protection I> 46 Negative-sequence system overcurrent protection I>, I/I> 47 Phase-sequence-voltage supervision L, L, L 48 Starting-time supervision Ianl 49 Thermal overload protection θ, It 49H Hot spot calculation θ h, I t 50/ 50N Definite time-overcurrent protection I> 50Ns Sensitive ground-current protection INs> Intermittent ground-fault protection Iie> 50L Load-jam protection I>L 50BF Circuit-breaker failure protection CBFP IP, INp /5N Inverse time-overcurrent protection 5C Cold load pickup 5V Voltage dependent overcurrent protection t=f(i)+v< 55 Power factor cos ϕ ) ) 59 Overvoltage protection V>.9 59C Peak overvoltage protection, -phase, for capacitors V> cap..0 60C Current-unbalance protection for capacitor banks Iunbal> 60FL Measuring-voltage failure detection 66 Restart inhibit. 67 Directional time-overcurrent protection, phase 67N. Directional time-overcurrent protection for ground-faults IN>, INP (V,I) 67Ns INs>, (V,I). Dir. sensitive ground-fault detection for systems with resonant or isolated neutral 67Ns Transient ground-fault function, for transient and permanent ground faults in resonant-grounded or isolated networks W0p,tr> 68 Power-swing blocking 74TC Trip-circuit supervision ) ) ) ) I t I>,IP (V,I) ΔZ/Δt TCS Relay Seletion Guide / functions to be continued on the next pages.7. / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

89 Relay Selection Guide..4 7SJ86 7SK8 7SK85 7UT85 7UT86 7UT87 7SS85 6MD85 6MD86 7VK87 7KE85.5 7SJ85 Digital fault recorder Circuit breaker management. 7SJ8 Bay controller Busbar protection Transformer differential protection. 7SL87 Motor protection 7SL86 Combined line differential and distance protection Overcurrent protection Function overview SIPROTEC ) ) ) ) ) ).. ) ) ) ) ) ) ) ) ) ) ) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition. /

90 Relay Selection Guide Function overview SIPROTEC = basic = optional (additional price) = not available ) in preparation ) via CFC ) IO number of a standard variant (increased configuration available using the SIPROTEC 5 system) ANSI Functions Abbr. 78 Out-of-step protection ΔZ/Δt 79 Automatic reclosing AR 8 Frequency protection f<, f> 8R Rate-of-frequency-change protection df/dt 85 Teleprotection 86 Lockout 87 Differential protection ΔI 87N Differential ground-fault protection ΔI N Broken-wire detection for differential protection 90V Automatic H voltage control FL Fault locator FL PMU Synchrophasor measurement PMU Type 7SA84 Line protection 7SA86 7SA87 7SD84 Line differential protection 7SD86 7SD87 Relay Seletion Guide/functions to be continued on the next pages / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

91 Relay Selection Guide Function overview SIPROTEC 5 7SL86 Combined line differential and distance protection 7SL87 7SJ8 Overcurrent protection 7SJ85 7SJ86 7SK8 Motor protection 7SK85 7UT85 Transformer differential protection 7UT86 7UT87 Busbar protection 7SS85 6MD85 Bay controller 6MD86 Circuit breaker management 7VK87 Digital fault recorder 7KE SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./4

92 Relay Selection Guide Function overview SIPROTEC = basic = optional (additional price) = not available ) in preparation ) via CFC ) IO number of a standard variant (increased configuration available using the SIPROTEC 5 system) ANSI Functions Further functions Measured values Switching-statistic counters Logic editor Inrush-current detection External trip initiation Control High-speed busbar transfer function Fault recording of analog and binary signals Extended fault recording Monitoring and supervision Protection interface, serial 7SA84 Line protection 7SA86 7SA87 7SD84 Line differential protection 7SD86 7SD87 No. of setting groups Changeover of setting group Circuit breaker test.5 Hardware feature Hardware quantity structure expandable Binary inputs (max.) 5 ) ) ) 5 ) ) ) Binary outputs (max.) incl. life contact 8 ) 46 ) 46 ) 8 ) 46 ) 46 ) Transducer inputs (0-0 ma) (max.) Current inputs (max.) 4 ) 8 ) 8 ) 4 ) 8 ) 8 ) Voltage inputs (max.) 4 ) 8 ) 8 ) 4 ) 8 ) 8 ) Case (x9'') / /-/ /-/ / /-/ /-/ Small display (lines) Large, graphical display (pixel) 0x40 0x40 0x40 0x40 0x40 0x40 Pushbuttons Key switch LEDs (max.) Pluggable terminal blocks PSU variants DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0./5 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

93 Relay Selection Guide Function overview SIPROTEC 5 7SL86 Combined line differential and distance protection 7SL87 7SJ8 Overcurrent protection 7SJ85 7SJ86 7SK8 Motor protection 7SK85 7UT ) ) / 59 ) ) / 7 ) 9 ) ) 7 ) 5 ) 59 ) 44 ) ) 75 Transformer differential protection 7UT86 7UT87 Busbar protection 7SS85 6MD85 Bay controller 6MD86 Circuit breaker management 7VK87 Digital fault recorder 7KE ) 46 ) 9/6 ) 4 ) 9/6 7 ) ) 4 ) 8 ) 5 ) ) 80 ) 46 ) ) 8 ) 4 4 ) 4 ) 4 4 ) 8 ) ) 0 ) 40; 60 ) 4 ) 8 ) 8 ) 4 8 ) 8 ) 4 4 ) 4 ) 4 4 ) 0 ) 4 ) 4 ) 4 ) 8 ) 8 ) 0 /-/ /-/ / /-/ /-/ / /- / /-/ /-/ /-/ /-/; x/) / /-/ /-/ /-/ /-/ x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x40 0x DC 4-48; DC 60-50/ AC5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC5-0 DC 4-48; DC 60-50/ AC 5-0 DC 4-48; DC 60-50/ AC 5-0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition /6

94 Relay Selection Guide /7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

95 Application Examples Medium-voltage applications Medium-voltage applications for all system grounding types Fast fault clearance in double-feed lines (closed) rings SJ8/85 FG Voltage/current 7SJ8/85 7SJ8/85 FG Voltage/current FG Voltage/current 50/5 50N/5N 67 67N 50/5 50N/5N 67 FG Circuit breaker FG Circuit breaker 67N QA QA 50/5 50N/5N 67 67N 67Ns FL FG Circuit breaker QA 79 Ctrl 79 Ctrl Protection communication PI 79 Ctrl Protection communication PI Fig../ Medium-voltage application for all system grounding types Fig../ Fast fault clearance in double-feed lines (closed) rings. Properties Reliable detection of transients and static ground faults Cost saving due to integrated transient function Directional and non-directional protection and control functions Acquisition and transmission of PMU variables possible. Properties Directional DMT/IDMTL protection without grading times Fast fault clearance Low-cost due to integrated protection interface Monitored data exchange Adaptable to different communication infrastructures....4 Protection and control of multiple feeders with one device Central control of multiple feeders and dedicated protection.5 QA QA QA QA QA QA 7SJ85 FG Voltage/current -phase FG Circuit breaker QA FG Circuit breaker QA Ctrl.6 50/5 50N/5N 79 Ctrl FG Circuit breaker QA Ctrl.7 FG Voltage/current -phase 50/5 50N/5N FG Circuit breaker QA 79 Ctrl M FG Circuit breaker QA Ctrl.8 FG Voltage/current -phase FG Circuit breaker QA.9 50/5 50N/5N 79 Ctrl FG Voltage/current 50/5 FG Circuit breaker QA FG Voltage/current 50/5 FG Circuit breaker QA FG Motor 50/ FG Circuit breaker QA.0 Ctrl Ctrl Ctrl. Fig../ Protection and control of multiple feeders with one device Fig../4 Central control of multiple feeders and dedicated protection. Properties Reduced investment because device for multiple feeders Simple parameterization Shorter commissioning times Cost savings because up to 7 feeders possible with device. Properties Protection for each bay Central control for multiple feeders High availability because backup protection functions can be activated in the controllers SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

96 Application Examples Transformer protection applications Two-winding transformer Autotransformer bank QA 5 QA FG Transformer side 49 49H FG Transformer side 50/5 FG Transformer 87 FG Circuit breaker QA 50BF Ctrl FG Circuit breaker QA 50BF Ctrl FG Auto transformer side FG Auto transformer side FG Transformer 50/5 87T 87TNode Auto transformer FG compensation side 50/5 Auto transformer ground FG side FG Circuit breaker QA 50BF Ctrl FG Circuit breaker QA 50BF Ctrl FG Circuit breaker QA 50BF Ctrl FG Circuit breaker QA4 50BF Ctrl....4 Fig../5 Two-winding transformer Properties Clear assignment of the functions to the primary element Reduced investment Simple parameterization Reduced wiring and faster commissioning. Fig../7 Properties Autotransformer bank Reduced investment due to integration of the differential and node protection function in one unit (87 and 87 Node) High sensitivity with single line to ground faults..5 Two-winding transformer with incoming feeders (e.g. double circuit-breaker switchgear) protection Protection and backup protection solution for -winding transformers 5 5 QA QA 5 7SA86.6 FG Transformer side 49 87N FG Circuit breaker QA 50BF Ctrl 59N Fig../6 Properties 5 QA FG Transf. neutral point FG Transformer side FG 50N/5N Line 50/5 FG Transformer 87 FG Circuit breaker QA 50BF Ctrl FG Circuit breaker QA 50BF Two-winding transformer with incoming feeders (e.g. double circuit-breaker switchgear) Separate acquisition, monitoring and control of all circuit breakers High sensitivity with single line to ground-fault differential protection Cost savings due to 87T and 87T N in one unit. Ctrl Fig../8 Properties 5 5 7UT T 7SJ85 5 7SA86 59N 7UT T Protection and backup protection solution for -winding transformers Free design of the protection and backup protection concept Inclusion of line protection devices Increased availability../ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

97 Application Examples Motor protection applications Induction motor: protection and control 5 QA M Fig../9 Properties RTD FG Motor 7 8 FG Analog units / N 67Ns RTD FG Circuit breaker QA Ctrl Induction motor: protection and control 49S 66 49R Reduced investment because protection and control in one device Thermal motor protection functions for reliable motor monitoring Thermal motor protection functions with direct connection of temperature sensors. Motor protection and simplified differential protection 5 QA M Fig../ Properties RTD FG Motor 7 FG Motor / N 66 67Ns 87M FG Analog units RTD FG Circuit breaker QA Ctrl 49S 49R Protection and control of multiple feeders with one device High sensitivity and short tripping times due to differential protection function Cost saving due to integration of the differential protection function in a separate function group Motor protection with differential protection Motor differential protection with Krondorfer starter.5 5 QA M Fig../ 0 Properties FG Motor 7 FG Motor / N 66 67Ns 87M FG Analog units RTD FG Circuit breaker QA Ctrl 49S Motor protection with differential protection Autonomous differential protection functions High sensitivity and short tripping times due to differential protection function Separate acquisition and monitoring of the current transformers. 49R 5 QA 7UT86 FG Motor (stator) FG Motor diff 5 87M FG Motor side 5 FG Motor side QA 5 FG Circuit breaker QA Ctrl M 5 QA Fig../ Motor differential protection with Krondorfer starter Properties Acquisition, monitoring and control of all circuit breakers Differential protection function also available during starting SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

98 Application Examples Line protection applications Protection and control separate Fig../ Properties 5 QA Protection and control separate FG FG 50BF FG 50/5 FG Line 87 Circuit breaker QA Ctrl Voltage/current 50N/5N Circuit breaker QA 5 50BF Ctrl Clear assignment of protection and control in separate devices Less external components by detection and selection of busbar voltage in the device High reliability due to backup protection functions in the 6MD8 bay controller High availability due to emergency control in the 7SL8 protection device. Low-cost protection and device redundancy Distance protection of two parallel lines with one device 5 5 QA QA Line Line Fig../ 5 Properties FG Line 87L FG Line FG Circuit breaker QA 79 50BF Ctrl FG Circuit breaker QA 79 50BF Ctrl Distance protection of two parallel lines with one device Low-cost due to protection of both lines in one device Stable due to consideration of the influences of the parallel line for the distance protection function. Self-restoring multi-leg configurations 7SD8 7SD8 7SD L 87L 87L QA QA FG Line FG Circuit breaker QA Protection interface 5 Ctrl 5 Ctrl 5 Ctrl.6 87L FG Line 79 FG Circuit 50BF breaker Ctrl QA PI PI PI PI Line Line Fig../ 4 Properties FG Line 87L FG Line 79 50BF Ctrl FG Circuit breaker QA 79 50BF Ctrl FG Circuit breaker QA 79 50BF Ctrl Low-cost protection and device redundancy Protection interface PI Protection interface High availability due to protection and device redundancy Low-cost because only devices required for lines Reliable because of parallel processing of the protection functions in the devices. Fig../ 6 Properties 5 7SD8 Ctrl 87L PI 7SD8 5 Ctrl 5 87L Self-restoring multi-leg configurations High availability because differential protection is also active when a communication link fails S elf-restoring due to automatic switchover from ring to chain topology High ease of maintenance because single line ends can be taken out of the differential protection configuration for c ommissioning and servicing. PI 7SD8 Ctrl 87L PI./4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

99 Application Examples Breaker-and-a-half application Modular and distributed protection and control solution 5 QA 5 QA 5 QA Line Line BB FG Line FG Circuit breaker QA 50BF 87L FG Circuit breaker QA 50BF 79 Ctrl 79 Ctrl FG Circuit breaker QA Ctrl 5 FG Circuit breaker QA Ctrl 5 FG Circuit breaker QA Ctrl 5 FG Line 87L FG Circuit breaker QA 50BF 79 Ctrl FG Circuit breaker QA 50BF 79 Ctrl Low-cost device and protection redundancy in breaker-and-a-half switchgear FG Line FG Line 87 Line FG FG FG Ctrl Ctrl Ctrl Circuit breaker QA Circuit breaker QA Circuit breaker QA QA 5 QA 5 5 QA FG Line 87 FG Line FG FG FG Line Ctrl Ctrl Ctrl Circuit breaker QA Circuit breaker QA Circuit breaker QA BB Fig../ 7 Modular and distributed protection and control solution Fig../ 8 Low-cost device and protection redundancy in breaker-and-a-half switchgear.5 Properties Clarity due to clear assignment of protection and control High availability due to protection redundancy (Main and Main ) Simple reliable central control of the entire diameter Reliable due to emergency control in every line in the protection device Reduced wiring due to integrated voltage selection System-wide diameter bus based on IEC 6850 electrically isolated data exchange, reduced wiring easy expansion. Properties Clear assignment of the primary protection function (line differential protection 87) to a line in one device (Main ) The distance protection function () is implemented in the protection device of the other line by a nd line function group High availability and reliability due to device and protection redundancy Low cost SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./5

100 Application Examples Applications for capacitor banks Protection of a capacitor bank in an H-circuit BB 5 QA 7SJ85 FG Capacitor bank Capacitor bank 50 50N C FG Circuit breaker QA 50BF Ctrl 60C Protection of a capacitor bank in an H-circuit and of an associated filter circuit Capacitor bank QB QB 5 QA BB BB 7SJ85 FG Capacitor bank 50/5 59C FG Circuit breaker QA 50BF 50N/5N 59N Ctrl 60C N... Filter section *.4.5 Fig../ 9 Protection of a capacitor bank in an H-circuit Fig../0 Protection of a capacitor bank in an H-circuit and of an associated filter circuit Properties Precisely adapted due to dedicated function group and application-specific protection function, such as peak overvoltage protection (ANSI 59C) and sensitive currentunbalance protection (ANSI 60C) Low cost due to integration of all required functions into one device. Properties Optimum protection of complex banks and filter circuits by flexible hardware and flexible function design Low cost due to integration of all necessary functions into one device with up to 7 -phase measuring points../6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

101 Application Examples Busbar protection Double busbar with coupling Bay Bus coupler bay... Bay BB BB.. QB QB. QB QB 5 QA QB QB.4.5 BI.6 7SS QA FG Disconnector QB FG Disconnector QB FG Disconnector QB FG Disconnector QB FG Disconnector QB FG Disconnector QB 5 QA.8.9 BI FG Current transformer BE FG Circuit breaker QA 50BF 50EF Ctrl FG Current transformer BE FG Circuit breaker QA 50BF 50EF Ctrl FG Current transformer BE FG Circuit breaker QA 50BF 50EF Ctrl BI.. FG Busbar 87B Inherent CBFP. Check zone Bus zone.4 Bus zone Supervision Fig../ Double busbar with coupling.5 Properties Central busbar protection Grouping of all primary components of a bay in the bay image Configurable busbar function group One device for up to 5 measuring points Flexible adaptation to the topology (up to 4 busbar sections and 4 couplings can be configured) Integrated disconnector image Convenient graphical configuration with DIGSI SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition./

102 Application Examples Grid monitoring and PMU Grid monitoring and PMU SIGUARD PDP 5 Node device A SIPROTEC 5 PMU 5 5 Node device B Node device C SIPROTEC 5 SIPROTEC 5 PMU PMU Fig../ Principle of distributed phasor measurement Properties.5 Each SIPROTEC 5 device can be equipped or retrofitted with the PMU function Online and offline evaluation of the PMU data in the monitoring system, SIGUARD PDP /8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

103 Overcurrent Protection SIPROTEC 7SJ8, 7SJ85 Answers for infrastructure and cities.

104 Overcurrent Protection SIPROTEC 7SJ8, 7SJ85 Description Overcurrent protection SIPROTEC 7SJ8, 7SJ85 Overcurrent protection devices are part of the modular system of SIPROTEC 5. They support all SIPROTEC 5 system features and can be used individually as well as universally in the framework of system solutions. In the following, the specific properties of the SIPROTEC 5 overcurrent protection devices are described. SIPROTEC 5 overcurrent protection devices are multifunctional devices whose main protection functions are based on the overcurrent protection principle. They protect primarily feeders and lines in the distribution network but they are also suitable for use in the high-voltage network. The flexible configurability of the hardware quantity structure also allows protecting several feeders with one device. The numerous functions and high flexibility make the device suitable for a great number of further protection and monitoring applications. We recommend the SIPROTEC 7SJ86 specifically as a backup and emergency protection for line protection. The great number of automatic functions permits use in all fields of power supply. The devices also contain all important additional functions which are necessary for safe network operation today. This includes functions for protection, control, measurement and monitoring. The large number of communication interfaces and communication protocols satisfies the requirements of the communication-based selective protection, as well as automated operation. Commissioning and maintenance work can be completed safely, quickly and thus cost-effectively with high-performance test functions. Because of a modular structure design, the SIPROTEC 5 devices can always be flexibly adapted to specific requirements. Features The two device types 7SJ8 and 7SJ85 offer different hardware configuration options. Basic distinguishing features 7SJ8 Various hardware configurations are available for binary inputs and outputs within the / base module 7SJ85 Hardware configuration can be flexibly expanded and configured for analog inputs, binary inputs and outputs, measuring transducers and communication using /6 expansion modules Table.4/ Overview of the different distinguishing features Function library and application templates A common function library provides all protection, automation, monitoring and additional functions for the SIPROTEC 5 devices. These functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. The tables on the following pages list the available functions from the library for every device type. Predefined templates are available in DIGSI for the standard applications. These templates already contain basic configurations, required functions and default settings SJ85 7UT8 7SK85 7KE85 6MD8 6MD8 7SA87 7SD87 7SJ86 7SL87 7SS8 7KE85 7VK87 7SJ85 7UT8 6MD8 7SS8 7KE85 7SA84 7SA86 7SJ85 7SJ86 7SD84 7SD86 7SL86 7SJ8 7SJ85 7UT8 7KE85 7SA84 7SA86 7SD84 7SD86 7SJ8 7SJ85 7SK8 7SK85 M G M G Applications.pdf.6.7 Fig..4/ Application of SIPROTEC 5 devices.4/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

105 Overcurrent Protection SIPROTEC 7SJ8 Properties Properties SIPROTEC 7SJ8 Brief description Inputs and outputs Hardware flexibility Housing width Feeder and overcurrent protection for all voltage levels 4 current transformers, 4 voltage transformers (optional), or binary inputs, 9 or 6 binary outputs Various hardware quantity structures are available for binary inputs and outputs in the / base module, it is not possible to add /6 expansion modules, available with large and small display / 9 inch Directional and non-directional time overcurrent protection with additional functions Optimization of the tripping times by direction comparison and protection data communication Recognition of static and transient ground faults (transient function*) in resonant-grounded and isolated networks Overvoltage and undervoltage protection Power protection, configurable as active or reactive power protection Frequency protection and frequency change protection for load shedding applications Control, synchrocheck and system interlocking Powerful automation with graphical CFC (Continuous Function Chart) Single line presentation on a small or large display Integrated electrical Ethernet port J for DIGSI IEC 6850 (reporting and GOOSE) via integrated port J Two optional pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocol PRP and HSR Secure serial protection data communication, also over long distances and all available physical media (fiber-optic cable, two-wire connections and communication networks) Measurement of operational values Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C7.8 protocol Powerful fault recording Cyber Security in accordance with NERC CIP and BDEW Whitepaper Additional functions for simple tests and easy commissioning. Applications The overcurrent protection device SIPROTEC 7SJ8 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection of branches and lines. Fig..4/ 7SJ8_Frontansicht_dt.tif Overcurrent protection SIPROTEC 7SJ8 front and rear view Typical overcurrent protection applications are: Detection of short circuits in electric operational equipment of radial networks, lines which are supplied from one or two sides, parallel lines and open or closed looped networks of all voltage levels Detection of ground faults in isolated or resonant-grounded systems with radial, ring-shaped or meshed topology Backup protection of differential protective schemes of all types of lines, transformers, generators, motors, and busbars. The numerous functions and high flexibility make the 7SJ8 suitable for a great number of other applications, e.g., Phasor Measurement Unit (PMU) Reverse power protection Load shedding applications Switchover automation. The SIPROTEC 7SJ8 provides system solutions which are fit for the future and which entail a high investment security and low operating costs. Functions Table.4/ on page.4/6 shows all functions which are available in SIPROTEC 7SJ8. All functions can be freely configured with DIGSI 5 as a matter of principle. You need the appropriate number of free function points within the device for some of the functions. The function point calculator in the online configurator provides support in determining the required number of function points for your device. 7SJ8_Rueckansicht.tif SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/

106 Overcurrent Protection SIPROTEC 7SJ8 Application templates and examples Application templates Templates are available in DIGSI for the standard applications. They comprise basic configurations and default settings. You can use them directly or as a template for application-specific adaptations. Table.4/ on page.4/6 shows the functional scope and the function point requirement for the described application templates. The following application templates are available: Non-directional overcurrent protection Overcurrent protection (non-directional) for phases and ground Transformer inrush current detection. Application example SIPROTEC 7SJ8 Direction comparison protection via protection data interface for lines supplied from two sides Direction comparison protection can be realized with the help of direction determination of the directional overcurrent protection in the case of lines which are supplied from two sides. The direction comparison protection is designed to selectively isolate a faulty line section (e.g., sections of rings) in high speed, i.e. no long graded times will slow down the tripping process. Directional overcurrent protection grounded system Overcurrent protection (directional and non-directional) for phases and ground Transformer inrush current detection Measuring voltage failure supervision. Directional overcurrent protection resonant-grounded / isolated system Overcurrent protection (directional and non-directional) for phases Sensitive directional ground fault detection for static ground faults Sensitive directional ground fault detection for transient and static ground faults ( transient function) Transformer inrush current detection Measuring voltage failure supervision. The precondition of this procedure is that direction information can be exchanged between the individual protection relays. This information exchange can be realized via an protection data interface, for instance. Alternatives to the protection data interface are IEC 6850 GOOSE or pilot wires for signal transmission with an additional voltage loop Fig..4/ SIPROTEC SIPROTEC SIPROTEC SIPROTEC st stage st stage st stage st stage T = 0 s T = 0 s T = 0 s T = 0 s Backward Forward Forward Backward Backward Forward Forward Backward nd stage nd stage nd stage nd stage T = 0. s T = 0 s T = 0 s T = 0. s Transfer of the forward information Application example: Principle of the direction comparison protection of doubly fed line sections Transfer of the forward information Visio-DwDOCP enUS-0.pdf.4/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

107 Overcurrent Protection SIPROTEC 7SJ8 Application examples Fig..4/4 shows the function scope and the basic configuration of a SIPROTEC 7SJ8 for this application. The template Directional overcurrent protection grounded network is used as a basis. In addition, the device has to be equipped with a communication module for the protection data communication of course. The protection data communication function group is created automatically when the module is configured. The information which has to be transmitted to the remote end and which has to be received by the remote end is determined via the DIGSI editor communication assignment. The reception information can be linked directly with the binary input signals of the directional overcurrent protection. An additional logic with the help of a CFC chart is not required QA 5 7SJ8.6 I-ph FG Voltage/current -phase I-ph 50 SOTF 5 5N FG Circuit breaker QA I-ph 79 Ctrl V-ph CI V-ph 67 67N FL ) CB FG Protection communication PI BI BO.4_4_7SJ8_mit WirkKom_enUS-0.pdf....4 Line To the opposite end of the line ) Configuration via "Communication mapping" in DIGSI FG QA/ CB BI BO Function group Measuring point Circuit breaker Binary input Binary output 50/5 Overcurrent protection 5N Overcurrent protection, ground 67 Directional time-overcurrent protection, phases 67N Directional time-overcurrent protection, ground 79 Automatic reclosing SOTF Instantaneous tripping at switch onto fault.5 PI Protection interface FL Fault locator CI Communication interface Ctrl Control Fig..4/4 Application example: Direction comparison protection of doubly fed line sections with protection data communication SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/5

108 Overcurrent Protection SIPROTEC 7SJ ANSI FL , /5 50N/5N 50HS 50N/5N 50Ns/5Ns 50BF N 60FL 67 67N 67Ns 67Ns 74TC 79 8O 8U 8R 86 87N T PMU Dir. OC protection res. grounded/ isol. sys.. Dir. OC protection grounded system The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Available in 7SJ8 Non-directional overcurrent protection Functions, application templates Functions Fault locator Synchrocheck, synchronizing function Undervoltage protection, -phase Undervoltage protection, positive sequence system Undervoltage protection, -phase Power protection active/reactive Temperature supervision Negative-sequence system protection, non-directional Negative-sequence system protection, directional Unbalanced load protection (thermal) Phase sequence supervision Thermal overload protection Overcurrent protection, phases Overcurrent protection, ground High-current rapid tripping Overcurrent protection, -phase Sensitive ground current protection Intermittent ground-fault protection Breaker failure protection Overvoltage protection, -phase Overvoltage protection, positive-sequence system Overvoltage protection, negative-sequence system Overvoltage protection, -phase, universal, Overvoltage protection, zero-sequence system Measuring-voltage failure detection Directional time-overcurrent protection, phase Directional time-overcurrent protection, ground Sensitive ground fault detection for systems with resonant and isolated neutral Sensitive ground fault detection for resonant and isolated systems, for static and transient ground faults ( transient function) Abbr. FL Sync. V< V< VX< P<>, Q<> θ I>, I/I> I> (V, I) I t > LA, LB, LC θ, It I>, IP IN>, INP I>>> IN>, INP INs>, INsP Iie> CBFP V> V> V> Vx> V0> I>, IP (V, I) IN>, INP (V, I) INs> (V, I) W0p,tr> Trip circuit supervision Auto-reclosing Overfrequency protection Underfrequency protection Frequency change protection Lockout Low impedance restricted ground-fault protection Synchrophasor measurement Measured values, standard Measured values, extended: min, max, medium Switching statistic CFC standard CFC arithmetic CFC switching sequences for control application Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding conductor Function-points class: TCS AR f> f< df/dt Table.4 / SIPROTEC 7SJ8 Functions and templates.4 / 6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition PMU

109 Overcurrent Protection SIPROTEC 7SJ85 Properties Properties SIPROTEC 7SJ85 Brief description Inputs and outputs Hardware flexibility Housing width Feeder and overcurrent protection protection for all voltage levels 5 predefined standard variants with 4 current transformers, 4 voltage transformers, to 59 binary inputs, 9 to binary outputs Flexible, adaptable and expandable I/O quantity structure within the scope of the modular SIPROTEC 5 building blocks, /6 expansion modules can be added Available with large or small display or without display / 9 inch to / 9 inch Directional and non-directional time overcurrent protection with additional functions Protection of several feeders with up to 4 analog inputs Optimization of the tripping times by direction comparison and protection data communication Recognition of static and transient ground faults (transient function) in resonant-grounded and isolated networks Overvoltage and undervoltage protection Power protection, configurable as active or reactive power protection Frequency and frequency change protection for load shedding applications Special overvoltage and unbalance protection for capacitance banks Control, synchrocheck and system interlocking Powerful automation with graphical CFC (Continuous Function Chart) Integrated electrical Ethernet port J for DIGSI IEC 6850 (reporting) via integrated port J Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocol PRP and HSR Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, two-wire connections and communication networks) Measurement of operational values Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C7.8 protocol Powerful fault recording Additional functions for simple tests and easy commissioning. Applications The overcurrent protection device SIPROTEC 7SJ85 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection of branches and lines. Fig..4/5 Overcurrent protection device SIPROTEC 7SJS85 (/ device with large graphical display and /6 expansion module with keylock switch front control panel) Typical overcurrent protection applications are: Detection of short circuits in electric operational equipment of radial networks, lines which are supplied from one or two sides, parallel lines and open or closed looped networks of all voltage levels Detection of ground faults in isolated or resonant-grounded systems with radial, ring-shaped or meshed topology Backup protection of differential protective schemes of all types of lines, transformers, generators, motors, and busbars. The numerous functions and high flexibility make the SIPROTEC 7SJ85 suitable for a great number of other applications, e.g., Phasor Measurement Unit (PMU) Reverse power protection Load shedding applications Protection of capacitance banks Switchover automation. The 7SJ85 supports all SIPROTEC 5 system properties. It provides system solutions which are fit for the future and which entail a high investment security and low operating costs. Functions Table.4/ on page.4/ shows all functions which are available in SIPROTEC 7SJ85. All functions can be freely configured with DIGSI 5 as a matter of principle. You need the appropriate number of free function points within the device for some of the functions. The function point calculator in the online configurator provides support in determining the required number of function points for your device SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/7

110 Overcurrent Protection SIPROTEC 7SJ85 Application templates and examples Application templates Templates are available in DIGSI for the standard applications. They comprise basic configurations and default settings. You can use them directly or as a template for application-specific adaptations. Table.4/ on page.4/ shows the functional scope and the function point requirement for the described application templates. The following application templates are available: Non-directional overcurrent protection Overcurrent protection (non-directional) for phases and ground Transformer inrush current detection. Directional overcurrent protection grounded system Overcurrent protection (directional and non-directional) for phases and ground Transformer inrush current detection Measuring voltage failure supervision. Application example SIPROTEC 7SJ85 Direction comparison protection via protection data interface for lines supplied from two sides Direction comparison protection can be realized with the help of direction determination of the directional overcurrent protection in the case of lines which are supplied from two sides. The direction comparison protection is designed to selectively isolate a faulty line section (e.g., sections of rings) in high speed, i.e. no long graded times will slow down the tripping process. Directional overcurrent protection resonant-grounded/ isolated system Overcurrent protection (directional and non-directional) for phases Sensitive directional ground fault detection for static ground faults Sensitive directional ground fault detection for transient and static ground faults ( transient function) Transformer inrush current detection Measuring voltage failure supervision. Protection of a capacitor bank in an H-circuit Time-overcurrent protection for phases and ground Capacitor bank unbalance protection Peak overvoltage protection Overload protection Undercurrent protection. The precondition of this procedure is that direction information can be exchanged between the individual protective relays. This information exchange can be realized via an protection data interface, for instance. Alternatives to the protection data interface are IEC 6850 GOOSE or pilot wires for signal transmission with an additional voltage loop Fig..4/ SIPROTEC SIPROTEC SIPROTEC SIPROTEC st stage st stage st stage st stage T = 0 s T = 0 s T = 0 s T = 0 s Backward Forward Forward Backward Backward Forward Forward Backward nd stage nd stage nd stage nd stage T = 0. s T = 0 s T = 0 s T = 0. s Transfer of the forward information Application example: Principle of the direction comparison protection of doubly fed line sections The SIPROTEC 7SJ8 application example (Fig..4/4) on page.4/5 shows the functions and the basic configuration for this application. Transfer of the forward information Visio-DwDOCP enUS-0.pdf.4/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

111 Overcurrent Protection SIPROTEC 7SJ85 Application examples Application examples of SIPROTEC 7SJ85 Protection and control at a double busbar The double busbar feeder in Fig..4/7 is protected and also controlled by a SIPROTEC 7SJ85. The template Directional overcurrent protection grounded network is used as a basis for this example. In addition to the application template, the circuitbreaker failure protection, auto-reclosing and synchrocheck functions are required and configured in the circuit-breaker function group. These functions are added from the DIGSI function library simply via Drag and Drop. Operational measured values and metered energy values are calculated in the function group Voltage Current ph. They are available for output at the display, transmission to the substation automation system and processing in the CFC. A switching sequence in the CFC, which is triggered by a function key, causes an automatic busbar changeover QB QB 7SJ QA QB9 V-ph FG Voltage/current -phase I-ph V-ph N SOTF 67 67N FL FG Circuit breaker QA V-ph 5 V-ph I-ph 50BF.. I-ph V-ph Operational values Energy metered values 79 Ctrl CB BI BO..4 FG Disconnector QB Ctrl Dco BI BO.5 FG Disconnector QB Switching sequence for busbar changes Ctrl Line FG Disconnector QB9 Ctrl Dco Dco BI BO BI BO.4_4_7SJ8_mit WirkKom_enUS-0.pdf FG QA/ CB QB/ Dco BI BO CFC Function group Measuring point Circuit breaker Disconnector Binary input Binary output Continuous Function Chart 5 Synchrocheck 50BF Circuit-breaker failure protection 50/5 Overcurrent protection, phases 5N Overcurrent protection, ground 67 Directional time-overcurrent protection, phases 67N Directional time-overcurrent protection, ground 79 Automatic reclosing.0.. SOTF Ctrl Instantaneous tripping at switch onto fault Control. FL Fault locator.4 Fig..4/7 Application example: Overcurrent protection SIPROTEC 7SJ85 at a double busbar feeder SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/9

112 Overcurrent Protection SIPROTEC 7SJ85 Application examples Application example protection of a capacitor bank Fig..4/8 shows protection of a capacitor bank in an H-circuit. For this application, the device has special functions for the protection of capacitor banks. Thanks to the modularity and performance of SIPROTEC 5, the complete application can be protected by one device. Properties: Short-circuit protection (ANSI 50, 50N) for phase and ground faults Peak voltage protection (ANSI 59C), for protection of the dielectric of the bank from harmful peak voltages, in particular, caused by harmonics; consideration of harmonics up to the 50 th order, the peak voltage being calculated from the current by integration Overload protection (ANSI 49) for protection of the bank from thermal overload Very sensitive current-unbalance protection (ANSI 60C) for detecting the failure of a single capacitor element, as a monitoring and protection function; manual and automatic comparison in the bay. The automatic comparison permits consideration of dynamic unbalances, e.g. caused by temperature influences Undercurrent protection (ANSI 7) for tripping the local circuit breaker when the incoming feeder is disconnected; and therefore protection from hazardous energization of the nondischarged bank, e.g. in phase opposition Circuit-breaker failure protection (ANSI 50BF) QA BB 7SJ85 V-ph I-ph FG Capacitor bank V-ph I-ph 50 50N 59C FG Circuit breaker QA I-ph 50BF.5 Capacitor bank I-ph FG 49 7 I-asym 60C I-RLC Function group Measuring point Ctrl CB BI BO 7 Undercurrent protection 49 Overload protection BI BO QA/CB Ctrl Binary input Binary output Circuit breaker Control 50 50BF 50N 59C 60C Overcurrent protection, phases Circuit-breaker failure protection Overcurrent protection, ground Peak overvoltage protection Unbalance protection for capacitor banks Fig..4/8 Protection of a capacitor bank in H-circuit.4/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

113 Overcurrent Protection SIPROTEC 7SJ85 Application examples Application example protection of a capacitor bank and the associated filter circuit In Fig..4/9, not only the capacitor bank in H-circuit but also the associate filter circuits are protected by the 7SJ85. Thanks to the modularity and performance of SIPROTEC 5, the complete application can be protected by one device. Properties: Acquisition of up to 7 -phase measuring points Short-circuit protection (ANSI 50, 50N) for phase and ground faults Peak voltage protection (ANSI 59C), for protection of the dielectric of the bank from hazardous peak voltages, in particular, caused by harmonics; consideration of harmonics up to the 50 th order, the peak voltage being calculated from the current by integration BB BB Overload protection (ANSI 49), for protection of the bank from thermal overload Very sensitive current-unbalance protection (ANSI 60C), for detecting the failure of a single capacitor element, as a monitoring and protection function; manual and automatic comparison in the bay. The automatic comparison permits consideration of dynamic unbalances, e.g. caused by temperature influences Undercurrent protection (ANSI 7) for tripping the local circuit breaker when the incoming feeder is disconnected; and therefore protection from hazardous energization of the nondischarged bank, e.g. in phase opposition Circuit-breaker failure protection (ANSI 50BF) QB QB 7SJ85. V-ph FG Capacitor bank FG Circuit breaker QA.4 5 QA V-ph I-ph V-ph I-ph 50 59N 67N 5 5N C I-ph 50BF Ctrl CB BI BO.5 Capacitor bank I-ph I-asym 60C.6 Filter section * I-ph I-ph 4 I-ph 5 I-asym I-RLC I-RLC 60C FG BI BO QA/CB Ctrl Function group Measuring point Binary input Binary output Circuit breaker Control 7 Undercurrent protection 49 Overload protection 50BF Circuit-breaker failure protection 50/5 Overcurrent protection, phases, ground 5N Overcurrent protection, ground 59 Overvoltage protection.. 59C 59N Peak overvoltage protection Overvoltage protection with zero-sequence voltage/residual voltage. 60C 67N Unbalance protection for capacitor banks Directional overcurrent protection for ground faults.4 Fig..4/9 Typical capacitor bank + filter SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4/

114 Overcurrent Protection SIPROTEC 7SJ ANSI FL Q, /5 50N/5N 5V 50HS 50N/5N 50Ns/5Ns 50BF C 59N 60C 60FL 67 67N 67Ns 67Ns 74TC 79 8O 8U 8R 86 87N T PMU Functions Fault locator Synchrocheck, synchronizing function Undervoltage protection, -phase Undervoltage protection, positive sequence system Undervoltage protection, -phase Undervoltage-controlled reactive power protection (QU protection) Power protection active / reactive Temperature supervision Negative-sequence system protection Negative-sequence system protection, directional Unbalanced load protection (thermal) Phase sequence supervision Thermal overload protection Overcurrent protection, phases Overcurrent protection, ground High-current rapid tripping Overcurrent protection, -phase Sensitive ground current protection Intermittent ground-fault protection Breaker failure protection Voltage dependent overcurrent protection Overvoltage protection, -phase Overvoltage protection, positive-sequence system Overvoltage protection, negative-sequence system Overvoltage protection, -phase, universal Peak overvoltage protection, -phase, for capacitors Overvoltage protection, zero-sequence system Current-unbalance protection for capacitor banks Measuring-voltage failure detection Directional time-overcurrent protection, phase Directional time-overcurrent protection, ground Dir. sensitive ground-fault detection for systems with resonant or isolated neutral Sensitive ground fault detection for resonant and isolated systems, Trip circuit supervision Auto-reclosing Overfrequency protection Underfrequency protection Frequency change protection Lockout Low impedance restricted ground-fault protection Synchrophasor measurement Measured values, standard Measured values, extended: min, max, medium Switching statistic CFC standard CFC arithmetic CFC switching sequences for control application Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding conductor Function-points class: Table.4 / SIPROTEC 7SJ85 Functions and templates.4 / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition Abbr. FL Sync. V< V< VX< Q>/U< P<>, Q<> θ I>, I/I> I> (V, I) I t > LA, LB, LC θ, It I>, IP IN>, INP I>>> IN>, INP INs>, INsP Iie> CBFP t=f(i)+v< V> V> V> Vx> V> cap. V0> Iunbal> Dir. OC protection res. grounded / isol. sys.. Dir. OC protection grounded system The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Available in 7SJ85 Non-directional overcurrent protection Functions, application templates I>, IP (V, I) IN>, (V, I) INs>, (V, I) W0p,tr> TCS AR f> f< df/dt PMU

115 Overcurrent Protection SIPROTEC 7SJ8 Standard variants Standard variants for SIPROTEC 7SJ8 U /, BI, 9 BO, 4 I. s Run Error SIPROTEC Housing width / x 9" binary inputs, 9 binary outputs ( life contact, 8 standard), 4 current transformer inputs Line /4 4.. Contains the modules: Base module with PS0 and IO0.4 U /, BI, 6 BO, 4 I.5 s Run Error Housing width / x 9" binary inputs, 6 binary outputs ( life contact, 5 standard), 4 current transformer inputs SIPROTEC Line /4 4.7 Contains the modules: Base module with PS0, IO0 and IO0 U.8 /, BI, 9 BO, 4 I, 4 V.9 s Housing width / x 9" binary inputs, 9 binary outputs ( life contact, 8 standard), 4 current transformer inputs, 4 voltage transformer inputs Run Error SIPROTEC Line /4 4.. Contains the modules: Base module with PS0 and IO0 U4.6. /, BI, 6 BO, 4 I, 4 V s Housing width / x 9" binary inputs, 6 binary outputs ( life contact, 5 standard), 4 current transformer inputs, 4 voltage transformer inputs Run Error SIPROTEC Line /4 4.4 Contains the modules: Base module with PS0, IO0 and IO0 The technical data can be found in the manual. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.4 /

116 Overcurrent Protection SIPROTEC 7SJ85 Standard variants. Standard variants for 7SJ85 S s. S.7.8 S.. 4 s s Run Error SIPROTEC SIPROTEC Line /4 4 s s Run Error SIPROTEC SIPROTEC Line /4 4 Contains the modules: Base module with PS0 and IO0, expansion module IO07.4 S4 /, 4 BI, 5 BO, 4 I, 4 V Housing width / x 9" 4 binary inputs, 5 binary outputs ( life contact, 8 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs.5 s Run Error SIPROTEC Line s s SIPROTEC SIPROTEC /4 4 Contains the modules: Base module with PS0 and IO0, expansion module x IO07 S5.9 /, 7 BI, 7 BO, 4 I, 4 V Housing width / x 9" 7 binary inputs, 7 binary outputs ( life contact, 0 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs..8 /4 Contains the modules: Base module with PS0 and IO0, expansion module IO SIPROTEC Line /, 7 BI, 6 BO, 4 I, 4 V Housing width / x 9" 7 binary inputs, 6 binary outputs ( life contact, 9 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs.6.6 Error Contains the modules: Base module with PS0 and IO0.4 Run Housing width / x 9" binary inputs, 9 binary outputs ( life contact, standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs..5 /, BI, 9 BO, 4 I, 4 V 5/6, 59 BI, BO, 4 I, 4 V Housing width 5/6 x 9" 59 binary inputs, binary outputs ( life contact, 6 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion module x IO07 The technical data can be found in the manual. / 4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition s Run Error SIPROTEC Line /4 4 s s s SIPROTEC SIPROTEC SIPROTEC

117 Line Protection SIPROTEC 7SA8, 7SD8, 7SL8, 7VK87, 7SJ86 Answers for infrastructure and cities.

118 Line Protection Devices SIPROTEC 5 Line protection devices SIPROTEC 5 line protection devices are part of the modular system of SIPROTEC 5. They support all SIPROTEC 5 system features, and can be used individually as well as universally in the framework of system solutions. In the following, the specific properties of the SIPROTEC 5 line protection devices are described. The description of the SIPROTEC 5 system features is found in the system catalog. SIPROTEC 5 line protection devices are based on the distance protection and differential protection principles. They protect overhead lines and cables of all voltage levels with the highest possible degree of selectivity and security. A large number of additional protection and automation functions makes use in all areas of line protection possible. The devices also contain important auxiliary functions that are necessary for safe network operation today. This includes functions for control, measurement and monitoring. The large number of communication interfaces and communication protocols satisfies the requirements of communication-based selective protection, as well as automated operation. Commissioning and maintenance work can be completed safely, quickly and thus cost-effectively with high-performance test functions. Because of a modular structure design, SIPROTEC 5 line protection devices can always be flexibly adapted to specific requirements. Definition of device types based on designation Features The device types are defined by their main protection functions and by essential distinguishing features. For devices with flexible configurability of the hardware quantity structure, you can select various standard variants when ordering. Expandability through supplemental modules allows for individual adaptation to specific applications such as more analog channels for breaker-and-a-half schemes, or more binary contacts (see Overview of the standard variants ). Function library and application templates A common function library makes all protection, automation, monitoring and auxiliary functions for the SIPROTEC 5 line protection devices available. Thus, the same functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. On the following pages of this catalog, the selection of functions available from the library is shown in table format. Pre-defined templates are available in DIGSI for standard applications. These templates contain basic configurations, required functions and default settings for standard applications. Main protection functions Distinguishing features.5 7 XX YY Fig..5/ Definition of device types 7 XX YY Main protection: 7 SA Distance protection 7 SD Differential protection 7 SL Distance and differential protection 7 SJ Overcurrent protection 7 VK Circuit-breaker management Essential distinguishing features: 7 84 exclusively -pole tripping Hardware quantity structure fixed 7 86 exclusively -pole tripping Hardware quantity structure flexibly configurable and -pole tripping Hardware quantity structure flexibly configurable Table.5/ Distinguishing features.5/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

119 Line Protection Devices Overview Type designation 7SA84 7SA86 7SA87 7SD84 7SD86 7SD87 7SL86 7SL87 7VK87 7SJ86 Distance protection Differential protection Overcurrent protection for overhead line Circuit-breaker management -pole trip command -/-pole trip command Flexibly configurable hardware Table.5/ Overview of the various distinguishing features of the main protection types 7SJ85 7KE85 6MD8 7SL87 7SA84 7SJ8 7UT8 7SK85 7SA87 7SS8 6MD8 7SA86 7SD84 7SJ8 7SA84 7SA86 7SJ85 7KE85 7SD87 7KE85 7SJ85 7SS8 7SJ85 7SD86 7SJ85 7SD84 7SK8 6MD8 7SJ86 7VK87 7UT8 7KE85 7SJ86 7SL86 7UT8 7SD86 7SK85 M G M G Fig..5/ Areas of application of the SIPROTEC 5 devices in the power transmission system Visio-Anw_SIP5-LS-us.pdf SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

120 Distance Protection SIPROTEC 7SA84 Properties Properties SIPROTEC 7SA84 Main protection function Distance protection Tripping -pole, min. tripping time 5 ms Inputs and outputs 4 current transformers, 4 voltage transformers, 5 binary inputs, 8 binary outputs ( standard, 7 fast relays). The I/O quantity structure for 7SA84 is fixed; it cannot be changed with other modules of the SIPROTEC 5 modular system Housing width / 9 inch Line protection for all voltage levels with -pole tripping Selective protection of overhead lines and cables with singleand multi-ended feeders Time-graded backup protection for differential protection equipment Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Main protection function: 6-system distance protection Protection of lines with capacitive series compensation Adaptive power-swing blocking Detection of CT saturation for fast tripping and high accuracy at the same time optional, pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The distance protection SIPROTEC 7SA84 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multi-ended infeeds as well as time-graded backup protection for comparison protection schemes. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/ Distance protection device SIPROTEC 7SA84 Functions Table.5/ on page.5/6 shows all functions that are available in the SIPROTEC 7SA84. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/ on page.5/6 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SA84 basic distance protection Distance protection with -pole tripping for networks with all kinds of neutral point treatment Non-directional overcurrent protection as emergency or backup function Teleprotection functions Fault locator. SIPROTEC 7SA84 distance protections for compensated/isolated systems with AR Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines and cables in networks with compensated and isolated neutral point..5/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

121 Distance Protection SIPROTEC 7SA84 Application examples Busbar with line feeder QA 5 Power line Com. 7SA84 V4 I I I I4 V V V CI VT-ph CT-ph VT-ph FG Line I-ph V-ph PI Teleprotection (85) can use conventional signalling or serial protection interface FG PI CI CB BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output N FL 50HS /5 8 FG Circuit breaker V-ph V-ph I-ph 5 50BF 79 Ctrl CB BI BO Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground faults in grounded systems 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes Ctrl Control FL Fault locator SIP5 G-005.EN.ai Fig..5/4 Application example: Distance protection for overhead line.6 SIPROTEC 7SA84 distance protection for overhead line for grounded systems, with AR Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point (Fig..5/). SIPROTEC 7SA84 distance protection with MHO distance zone characteristics for overhead line for grounded systems, with AR Comprises the basic functions with MHO distance zone characteristics as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/5

122 Distance Protection SIPROTEC 7SA84 Functions, application templates /6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition Application templates ANSI Functions Abbr. Protection functions for -pole tripping -pole, N Distance protection Z< 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection Θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional overcurrent protection, phases I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated I Ns >, (V,I) neutral 67Ns Transient ground-fault function, for transient and permanent ground faults in W0p,tr> resonant-grounded or isolated networks 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 68 Power-swing blocking ΔZ/Δt 74TC Trip-circuit supervision TCS 78 Out-of-step protection ΔZ/Δt 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 85/ Teleprotection for distance protection 85/7 Weak or no infeed: Echo and tripping WI 85/67N Teleprotection for directional ground-fault protection 86 Lockout 87N T Low impedance restricted ground-fault protection ΔI N FL Fault locator FL FL Fault locator, two-ended measurement* FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation Available in 7SA84 DIS Basic DIS comp. / isol. systems, with AR DIS overhead line, grounded systems DIS MHO, overhead line, grounded systems

123 Distance Protection SIPROTEC 7SA84 Functions, application templates Application templates ANSI Functions Abbr. Operational measured values, standard Measured values, extended: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: Table.5 / Cont. Table/Functions The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SA84 Functions and application templates Available in 7SA84 DIS Basic DIS comp. / isol. systems, with AR DIS overhead line, grounded systems DIS MHO, overhead line, grounded systems SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

124 Distance Protection SIPROTEC 7SA86 Properties Properties SIPROTEC 7SA86 Main protection function Distance protection Tripping -pole, min. tripping time 9 ms Inputs and outputs predefined standard variants with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or Hardware flexibility flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Line protection for all voltage levels with -pole tripping Very short tripping time Also used in switchgear with breaker-and-a-half scheme Selective protection of overhead lines and cables with singleand multi-ended feeders Time-graded backup protection for differential protection equipment Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Main protection function: 6-system distance protection Protection of lines with capacitive series compensation Adaptive power-swing blocking Detection of CT saturation for fast tripping and high accuracy at the same time Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching device Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple test and commissioning. Applications The distance protection SIPROTEC 7SA86 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective, fast protection equipment for overhead lines and cables with single- and multi-ended infeeds as well as timegraded backup protection for comparison protection schemes. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/5 Distance protection device SIPROTEC 7SA86 Functions Table.5/4 on page.5/ shows all functions that are available in the SIPROTEC 7SA86. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/4 on page.5/ shows the functional scope and the function point requirement for the application templates described. The following templates are available: SIPROTEC 7SA86 basic distance protection Distance protection with -pole tripping for networks with all kinds of neutral point treatment Non-directional overcurrent protection as emergency or backup function Teleprotection functions Fault locator. SIPROTEC 7SA86 distance protections for compensated/isolated systems with AR Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines and cables in networks with compensated and isolated neutral point..5/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

125 Distance Protection SIPROTEC 7SA86 Application examples SIPROTEC 7SA86 distance protection for overhead line for grounded systems, with AR Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point (Fig..5/6). SIPROTEC 7SA86 distance protection with MHO distance zone characteristics for overhead line for grounded systems, with AR Comprises the basic functions with MHO distance zone characteristics as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point Busbar with line feeder QA 5 7SA84 V4 VT-ph SIPROTEC 7SA86 distance protection for overhead line for grounded systems, with AR for applications with breaker-and-a-half scheme Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point; prepared for applications with breaker-and-a-half schemes (Fig..5/7). SIPROTEC 7SA86 distance protection with MHO distance zone characteristics for overhead line for grounded systems, with AR for applications with breaker-and-a-half schemes Comprises the basic functions with MHO distance zone characteristics as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point; prepared for applications with breaker-and-a-half schemes (Fig..5/7) I I I I4 CT-ph FG Line I-ph 67N 50HS FL 50/5 FG Circuit breaker V-ph V-ph 5.5 V V V VT-ph V-ph I-ph 50BF 79 Fig..5/6 Power line Com. CI FG PI CI CB BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output Application example: Distance protection for overhead line PI Teleprotection (85) can use conventional signalling or serial protection interface Ctrl CB Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes Ctrl Control FL Fault locator BI BO Fig Visio-Appl-Bsp_.pdf SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/9

126 Distance Protection SIPROTEC 7SA86 Application examples. Busbar Power line Com. 7SA86 V V V VT-ph A-QA 5 B-QA 5 I I I I4 V V V V4 CI CT-ph VT-ph FG Line I-ph 87 STUB V-ph PI Σ 67N 50HS FL 50/ FG Circuit breaker A-QA V-ph 5 V-ph I-ph 50BF 79 Ctrl CB BI BO...4 I I I I4 V4 CT-ph VT-ph FG Circuit breaker B-QA V-ph 5 V-ph C-QA 5 I-ph 50BF 79.5 Power line Teleprotection (85) can use conventional signalling or serial protection interface Ctrl CB BI BO SIP5 G-004.EN.ai Busbar Fig..5/7 FG PI CI CB Σ BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Summation of currents Binary input Binary output Application example: Distance protection for overhead line with breaker-and-a-half scheme Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground faults in grounded systems 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes 87STUB STUB Differential protection Ctrl Control FL Fault locator.5/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

127 Distance Protection SIPROTEC 7SA86 Functions, application templates ANSI Functions Abbr. Available in 7SA86 DIS Basic Application templates DIS comp. / isol. systems, with AR DIS overhead line, grounded systems DIS MHO, overhead line, grounded systems DIS overhead line, grounded systems breaker-and-a-half Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O, N Distance protection Z< 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection Θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional overcurrent protection, phases I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant I Ns >, (V,I) or isolated neutral 67Ns Transient ground-fault function, for transient and permanent W0p,tr> ground faults in resonant-grounded or isolated networks 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 68 Power-swing blocking ΔZ/Δt 74TC Trip-circuit supervision TCS 78 Out-of-step protection ΔZ/Δt 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 85/ Teleprotection for distance protection 85/7 Weak or no infeed: Echo and tripping WI 85/67N Teleprotection for directional ground-fault protection 86 Lockout 87N T Low impedance restricted ground-fault protection ΔI N 87STUB STUB differential protection (for breaker-and-a-half schemes) ΔI FL Fault locator FL FL Fault locator, two-ended measurement* FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation DIS MHO, overhead line, grounded systems breaker-and-a-half SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

128 Distance Protection SIPROTEC 7SA86 Functions, application templates Cont. Table/Functions Available in 7SA86 DIS Basic Application templates DIS comp. / isol. systems, with AR DIS overhead line, grounded systems DIS MHO, overhead line, grounded systems DIS overhead line, grounded systems breaker-and-a-half ANSI Functions Abbr. Operational measured values, standard Measured values, expanded: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switch sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Table.5 / 4 Circuit breaker Disconnector/Grounding switch Function points: The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SA86 Functions and application templates DIS MHO, overhead line, grounded systems breaker-and-a-half / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

129 Distance Protection SIPROTEC 7SA87 Properties Properties SIPROTEC 7SA87 Main protection function Distance protection Tripping - and -pole, min. tripping time 9 ms Inputs and outputs predefined standard variations with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or Hardware flexibility flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Line protection for all voltage levels with - and -pole tripping Very short tripping time Also used in switchgear with breaker-and-a-half schemes Selective protection of overhead lines and cables with singleand multi-ended feeders Time-graded backup protection for differential protection equipment Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Main protection function: 6-system distance protection Protection of lines with capacitive series compensation Adaptive power-swing blocking Detection of CT saturation for fast tripping and high accuracy at the same time Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The distance protection SISPROTEC 7SA87 is a universal pro tection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective, fast protection equipment for overhead lines and cables with single- and multi-ended infeeds as well as timegraded backup protection for comparison protection schemes. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/8 Distance protection device SIPROTEC 7SA87 Functions Table.5/5 on page.5/6 shows all functions that are available in the SIPROTEC 7SA87. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/5 on page.5/6 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SA87 basic distance protection Distance protection with -/-pole tripping for networks with all kinds of neutral point treatment Non-directional overcurrent protection as emergency or backup function Teleprotection functions Fault locator. SIPROTEC 7SA87 distance protection for compensated/isolated systems with AR Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with compensated and isolated neutral point SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

130 Distance Protection SIPROTEC 7SA87 Application examples SIPROTEC 7SA87 distance protection for overhead line for grounded systems, with AR Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point (Fig..5/9). Busbar with line feeder QA 5 7SA87 V4 VT-ph I I I I4 V V V CT-ph VT-ph FG Line I-ph V-ph 67N 50HS FL 50/ SIPROTEC 7SA87 distance protection for overhead line in grounded systems, with AR for applications with breaker-and-a-half schemes Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point; prepared for applications with breaker-and-a-half schemes (Fig..5/0). FG Circuit breaker V-ph V-ph I-ph 5 50BF 79 CI PI Ctrl Power line Com. Teleprotection (85) can use conventional signalling or serial protection interface FG PI CI CB BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output CB BI BO Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes Ctrl Control FL Fault locator Fig_8_Visio-Appl-Bsp_.pdf Fig..5/9 Application example: Distance protection for overhead line.5/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

131 Distance Protection SIPROTEC 7SA87 Application examples Busbar. Power line Com. 7SA87 V V V VT-ph A-QA B-QA C-QA I I I I4 V V V V4 CI I I I I4 V4 CT-ph VT-ph CT-ph VT-ph FG Line I-ph 87 STUB V-ph PI Σ 67N 50HS FL 50/ FG Circuit breaker A-QA V-ph V-ph I-ph FG Circuit breaker B-QA V-ph V-ph I-ph 5 50BF 79 Ctrl 5 50BF CB BI BO Power line Teleprotection (85) can use conventional signalling or serial protection interface Ctrl CB BI BO Fig_9_Visio-Appl-Bsp_.pdf.5 Fig..5/0 Busbar FG PI CI CB Σ BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Summation of currents Binary input Binary output Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes 87STUB STUB Differential protection Ctrl Control FL Fault locator Application example: Distance protection for overhead line with breaker-and-a-half scheme SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/5

132 Distance Protection SIPROTEC 7SA87 Functions, application templates Available in 7SA87 Application templates DIS Basic DIS comp. / isol. systems, with AR DIS overhead line, grounded systems ANSI Functions Abbr. Protection functions for -pole tripping -pole Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O, N Distance protection Z< 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection Θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional overcurrent protection, phases I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 67Ns Transient ground-fault function, for transient and permanent ground faults in W0p,tr> resonant-grounded or isolated networks 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 68 Power-swing blocking ΔZ/Δt 74TC Trip-circuit supervision TCS 78 Out-of-step protection ΔZ/Δt 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 85/ Teleprotection for distance protection 85/7 Weak or no infeed: Echo and tripping 85/67N Teleprotection for directional ground-fault protection 86 Lockout 87N T Low impedance restricted ground-fault protection ΔI N 87STUB STUB differential protection (for breaker-and-a-half schemes) ΔI FL Fault locator FL FL Fault locator, two-ended measurement* FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation DIS overhead line, grounded systems breaker-and-a-half.5/6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

133 Distance Protection SIPROTEC 7SA87 Functions, application templates Application templates ANSI Functions Abbr. Operational measured values, standard Measured values, extended: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: Table.5 / 5 Cont. Table/Functions The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SA87 Functions and application templates Available in 7SA87 DIS Basic DIS comp. / isol. systems, with AR DIS overhead line, grounded systems DIS overhead line, grounded systems breaker-and-a-half SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/7

134 Differential Protection SIPROTEC 7SD84 Properties Properties SIPROTEC 7SD84 Main protection function Differential protection Tripping -pole, min. tripping time 4 ms Inputs and outputs 4 current transformers, 4 voltage transformers, 5 binary inputs, 8 binary outputs ( standard, 7 fast relays) The I/O quantity structure for 7SD84 is fixed; it cannot be changed with the other modules of the SIPROTEC 5 modular system. Housing width / 9" Line protection for all voltage levels with -pole tripping Phase-selective protection of overhead lines and cables with single- and multi-ended infeeds of all lengths with line ends Transformers and compensating coils in the protection zone are possible Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Protection of lines with capacitive series compensation Main protection function is differential protection with adaptive algorithm for maximum sensitivity and stability even at different CT errors, CT saturation and capacitive charging currents Directional backup protection and various additional functions optional, pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances, and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The differential protection device SIPROTEC 7SD84 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multi-ended infeeds with two ends. Transformers and compensating coils in the protection zone are also possible. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/ Differential protection device SIPROTEC 7SD84 Functions Table.5/6 on page.5/0 shows all functions that are available in the SIPTOREC 7SD84. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/6 on page.5/0 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SD84 basic differential protection Phase-selective differential protection with -pole tripping Non-directional overcurrent protection as emergency or backup function Fault locator. SIPROTEC 7SD84 differential protection for overhead line Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection (Fig..5/)..5/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

135 Differential Protection SIPROTEC 7SD84 Application examples Busbar with line feeder QA 5 Power line Com. 7SD84 V4 VT-ph I I I I4 V V V CI FG PI CI CB BI BO CT-ph VT-ph FG Line I-ph V-ph PI Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output 87L 50/5 50HS FL FG Circuit breaker V-ph V-ph I-ph 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 79 Automatic reclosing 8 Frequency protection 87L Differential protection, line Ctrl Control FL Fault locator 5 50BF 79 Ctrl CB BI BO Fig Visio-Appl-Bsp_.pdf Fig..5/ Application example: Line differential protection for overhead line SIPROTEC 7SD84 differential protection for overhead line with transformer in the protection range Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection Considers a transformer in the protection range SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/9

136 Differential Protection SIPROTEC 7SD84 Functions, application templates ANSI Functions Abbr..5/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition Available in 7SD84 Application templates Protection functions for -pole tripping -pole 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection Θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 67Ns Transient ground-fault function, for transient and permanent ground faults in W0p,tr> resonant-grounded or isolated networks 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 68 Power-swing blocking ΔZ/Δt 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 86 Lockout 87N T Low impedance restricted ground-fault protection ΔI N 87L Differential protection, line I 87L/87T Option for line differential protection: including power transformer ΔI Option for line differential protection:charging-current compensation Broken-wire detection for differential protection FL Fault locator FL FL Fault locator, two-ended measurement * FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation DIFF Basic DIFF Overhead line DIFF Overhead line with transformer

137 Differential Protection SIPROTEC 7SD84 Functions, application templates Cont. Table/Functions ANSI Functions Abbr. Application templates Operational measured values, standard Measured values, extended: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Control for more than 4 switching devices (function points per switching device) Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Available in 7SD84 DIFF Basic DIFF Overhead line DIFF Overhead line with transformer Table.5 /6 SIPROTEC 7SD84 Functions and application templates SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

138 Differential Protection SIPROTEC 7SD86 Properties Properties SIPROTEC 7SD86 Main protection function Differential protection Tripping -pole, min. tripping time 9 ms Inputs and outputs predefined standard variants with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or Hardware flexibility flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Line protection for all voltage levels with -pole tripping Phase-selective protection of overhead lines and cables with single- and multi-ended infeeds of all lengths with up to 6 line ends Also used in switchgear with breaker-and-a-half schemes Transformers and compensating coils in the protection zone are possible Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Protection of lines with capacitive series compensation Main protection function is differential protection with adaptive algorithm for maximum sensitivity and stability even at different CT errors, CT saturation and capacitive charging currents Directional backup protection Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances, and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The differential protection device SIPROTEC 7SD86 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multi-ended infeeds with up to 6 ends. Transformers and compensating coils in the protection zone are also possible. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/ Differential protection device SIPROTEC 7SD86 Functions Table.5/7 on page.5/5 shows all functions that are available in the SIPROTEC 7SD86. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/7 on page.5/5 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SD86 basic differential protection Phase-selective differential protection with -pole tripping Non-directional overcurrent protection as emergency or backup function Fault locator. SIPROTEC 7SD86 differential protection for overhead line Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection (Fig..5/4)..5/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

139 Differential Protection SIPROTEC 7SD86 Application examples SIPROTEC 7SD86 differential protection for overhead line with transformer in the protection range Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection. Considers a transformer in the protection range. Busbar with line feeder QA 5 7SD86 V4 VT-ph I I I I4 V V V CT-ph VT-ph FG Line I-ph V-ph 87L 50/5 50HS SIPROTEC 7SD86 differential protection for overhead line, for applications with breaker-and-a-half schemes Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection. Prepared for applications with breaker-and-a-half schemes (Fig..5/5). FL FG Circuit breaker V-ph V-ph I-ph 5 50BF Ctrl Power line Com. CI FG PI CI CB BI BO PI Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output CB 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 79 Automatic reclosing 8 Frequency protection 87L Differential protection, line Ctrl Control FL Fault locator BI BO Fig Visio-Appl-Bsp_.pdf Fig..5/4 Application example: Line differential protection for overhead line SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

140 Differential Protection SIPROTEC 7SD86 Application examples. Busbar Power line Com. A-QA 5 B-QA 5 7SD86 V V V I I I I4 V V V V4 CI I I I I4 V4 VT-ph CT-ph VT-ph CT-ph VT-ph FG Line I-ph Σ 87 50/5 STUB 87L V-ph PI 50HS FL FG Circuit breaker A-QA V-ph V-ph I-ph FG Circuit breaker B-QA V-ph V-ph 5 50BF 79 Ctrl 5 CB BI BO C-QA 5 I-ph 50BF 79.5 Power line Ctrl CB BI BO Fig_4_Visio-Appl-Bsp_.pdf Busbar FG PI CI CB Σ BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Summation of currents Binary input Binary output 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 79 Automatic reclosing 8 Frequency protection 87L Differential protection, line 87STUB STUB Differential protection Ctrl Control FL Fault locator Fig..5/5 Application example: Line differential protection for overhead line with breaker-and-a-half scheme.5/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

141 Differential Protection SIPROTEC 7SD86 Functions, application templates Available in 7SD86 Application templates ANSI Functions Abbr. Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O 87L Line differential protection for line ends I 87L Line differential protection for to 6 line ends I 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>, I P (V,I) 67Ns Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 67Ns Transient ground-fault function, for transient and permanent ground faults in W0p,tr> resonant-grounded or isolated networks 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Rate-of-frequency-change protection f> 8U Overfrequency protection f< 8R Underfrequency protection df/dt 86 Lockout 87L/87T Option for line differential protection: including power transformer ΔI Option for line differential protection:charging-current compensation 87N T Low impedance restricted ground-fault protection ΔI N 87STUB STUB differential protection (for breaker-and-a-half schemes) ΔI Broken-wire detection for differential protection FL Fault locator FL FL Fault locator, two-ended measurement* FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation DIFF Basic DIFF Overhead line DIFF Overhead line with transformer DIFF Overhead line, breaker-and-a-half SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/5

142 Differential Protection SIPROTEC 7SD86 Functions, application templates Application templates ANSI Functions Abbr. Operational measured values, standard Measured values, expanded: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: Table.5 /7 Cont. Table/Functions The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SD86 Functions and application templates Available in 7SD86 DIFF Basic DIFF Overhead line DIFF Overhead line with transformer DIFF Overhead line, breaker-and-a-half /6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

143 Differential Protection SIPROTEC 7SD87 Properties Properties SIPROTEC 7SD87 Main protection function Differential protection Tripping - and -pole, min. tripping time 9 ms Inputs and outputs predefined standard variants with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or Hardware flexibility flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Line protection for all voltage levels with - and -pole tripping Phase-selective protection of overhead lines and cables with single- and multi-ended infeeds of all lengths with up to 6 line ends Also used in switchgear with breaker-and-a-half schemes Transformers and compensating coils in the protection zone are possible Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Protection of lines with capacitive series compensation Main protection function is differential protection with adaptive algorithm for maximum sensitivity and stability even in the most varied transformer errors, CT saturation and capacitive charging currents Directional backup protection Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The differential protection device SIPROTEC 7SD87 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multi-ended infeeds with up to 6 ends. Transformers and compensating coils in the protection zone are also possible. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/6 Differential protection device SIPROTEC 7SD87 Functions Table.5/8 on page.5/0 shows all functions that are available in the SIPROTEC 7SD87. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/8 on page.5/0 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SD87 basic differential protection Phase-selective differential protection with - and -pole tripping Non-directional overcurrent protection as emergency or backup function Fault locator. SIPROTEC 7SD87 differential protection for overhead line Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuit-breaker failure protection, synchronization function, voltage and frequency protection, thermal overload protection (Fig..5/7) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/7

144 Differential Protection SIPROTEC 7SD87 Application examples SIPROTEC 7SD87 differential protection for overhead line with transformer in the protection range Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection. Considers a transformer in the protection range. Busbar with line feeder QA 5 7SD87 V4 VT-ph I I I I4 V V V CT-ph VT-ph FG Line I-ph V-ph 87L 50/5 50HS SIPROTEC 7SD87 differential protection for overhead line, for applications with breaker-and-a-half schemes Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines: Circuitbreaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection. Prepared for applications with breaker-and-a-half schemes (Fig..5/8). FL FG Circuit breaker V-ph V-ph I-ph 5 50BF 79 Ctrl Power line Com. CI FG PI CI CB BI BO PI Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output CB 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 79 Automatic reclosing 8 Frequency protection 87L Differential protection, line Ctrl Control FL Fault locator BI BO Fig_6_Visio-Appl-Bsp_.pdf Fig..5/7 Application example: Line differential protection for overhead line /8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

145 Differential Protection SIPROTEC 7SD87 Application examples Busbar. Power line Com. A-QA 5 B-QA 5 7SD87 V V V I I I I4 V V V V4 CI I I I I4 V4 VT-ph CT-ph VT-ph CT-ph VT-ph FG Line I-ph Σ 87 50/5 STUB 87L V-ph PI 50HS FL FG Circuit breaker A-QA V-ph V-ph I-ph FG Circuit breaker B-QA V-ph V-ph 5 50BF 79 Ctrl 5 CB BI BO C-QA 5 I-ph 50BF 79 Power line Ctrl CB BI BO Fig_7_Visio-Appl-Bsp_.pdf.5 Fig..5/8 Busbar FG PI CI CB Σ BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Summation of currents Binary input Binary output 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 79 Automatic reclosing 8 Frequency protection 87L Differential protection, line 87STUB STUB Differential protection Ctrl Control FL Fault locator Application example: Line differential protection for overhead line with breaker-and-a-half scheme SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/9

146 Differential Protection SIPROTEC 7SD87 Functions, application templates ANSI Functions Abbr. Available in 7SD87 Application templates Protection functions for -pole tripping -pole Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O 87L Line differential protection for line ends I 87L Line differential protection for to 6 line ends I 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Drehfeldüberwachung LA, LB, LC 49 Thermal overload protection θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 67Ns Transient ground-fault function, for transient and permanent ground faults in W0p,tr> resonant-grounded or isolated networks 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 86 Lockout 87L/87T Option for line protection: including power transformer ΔI Option for line differential protection: charging-current compensation 87N T Low impedance restricted ground-fault protection ΔI N 87STUB STUB differential protection (for breaker-and-a-half schemes) ΔI Broken-wire detection for differential protection FL Fault locator FL FL Fault locator, two-ended measurement* FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation DIFF Basic DIFF Overhead line DIFF Overhead line with transformer DIFF Overhead line, breaker-and-a-half.5/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

147 Differential Protection SIPROTEC 7SD87 Functions, application templates ANSI Functions Abbr. Table.5 /8 Cont. Table/Functions Application templates Operational measured values, standard Measured values, expanded: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SD87 Functions and application templates Available in 7SD87 DIFF Basic DIFF Overhead line DIFF Overhead line with transformer DIFF Overhead line, breaker-and-a-half SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

148 Differential and Distance Protection SIPROTEC 7SL86 Properties Properties SIPROTEC 7SL86 Main protection function Tripping Differential protection and distance protection -pole, min. tripping time 9 ms Inputs and outputs predefined standard variants with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or Hardware flexibility flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Line protection for all voltage levels with -pole tripping Phase-selective protection of overhead lines and cables with single- and multi-ended infeeds Used on lines of all lengths with up to 6 line ends Also used in switchgear with breaker-and-a-half schemes Transformers and compensating coils in the protection zone are possible Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Protection of lines with capacitive series compensation Two independent main protection functions with various protection algorithms Main protection: Differential protection with very short tripping time. The adaptive algorithm guarantees maximum sensitivity and stability, even in case of different CT errors, CT saturation and capacitive charging currents. Main protection: 6-system distance protection with very short tripping time and high accuracy also when detecting CT saturation. Adaptive power-swing blocking Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances, and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The combined differential and distance protection SIPROTEC 7SL86 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Fig..5/9 Differential and distance protection SIPROTEC 7SL86 Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multiended infeeds of all lengths with up to 6 ends. Transformers and compensating coils in the protection zone are also possible. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.5/9 on page.5/5 shows all functions that are available in the SIPROTEC 7SL86. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/9 on page.5/5 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SL86 basic differential and distance protection Phase-selective differential protection with -pole tripping Distance protection with -pole tripping for networks with all kinds of neutral point treatment Non-directional overcurrent protection as emergency or backup function Teleprotection functions Fault locator..5/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

149 Differential and Distance Protection SIPROTEC 7SL86 Application examples SIPROTEC 7SL86 differential and distance protection for overhead line in grounded systems Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection. SIPROTEC 7SL86 differential and distance protection with MHO distance zone characteristic for overhead line in grounded systems Comprises the basic functions with MHO distance zone characteristics as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point (Fig..5/0). Busbar with line feeder QA 5 7SL86 V4 VT-ph IPROTEC 7SL86 differential and distance protection for overhead line in grounded systems, with AR for applications with breaker-and-a-half schemes Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point Prepared for applications with breaker-and-a-half schemes (Fig..5/). SIPROTEC 7SL86 differential and distance protection with MHO distance zone characteristics for overhead line in grounded systems, with AR for applications with breaker-and-a-half schemes Comprises the basic functions with MHO distance zone characteristics as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point Prepared for applications with breaker-and-a-half schemes (Fig..5/) Com. Power line Fig..5/0 I I I I4 V V V CI FG PI CI CB BI BO CT-ph VT-ph FG Line I-ph Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output 67N 87L FL 50/ V-ph PI Teleprotection (85) can use conventional signalling or serial protection interface 50HS FG Circuit breaker V-ph V-ph I-ph Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes for and/or 67 N Ctrl Control FL Fault locator Application example: Combined line differential and distance protection for overhead line 5 50BF 79 Ctrl CB BI BO Fig_9_Visio-Appl-Bsp_.pdf SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/

150 Differential and Distance Protection SIPROTEC 7SL86 Application examples. Busbar Power line Com. A-QA 5 B-QA 5 7SL86 V V V I I I I4 V V V V4 CI I I I I4 V4 VT-ph CT-ph VT-ph CT-ph VT-ph FG Line I-ph Σ 87 67N 50HS STUB 87L FL 50/ V-ph PI FG Circuit breaker A-QA V-ph V-ph I-ph 5 50BF 79 Ctrl CB FG Circuit breaker B-QA V-ph V-ph 5 BI BO C-QA 5 I-ph 50BF 79.5 Power line Teleprotection (85) can use conventional signalling or serial protection interface Ctrl CB BI BO Fig_0_Visio-Appl-Bsp_.pdf Busbar Fig..5/ FG PI CI CB Σ BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Summation of currents Binary input Binary output Application example: Combined line differential and distance protection for overhead line with breaker-and-a-half scheme Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes for and/or 67N 87L Differential protection, line 87STUB STUB Differential protection Ctrl Control FL Fault locator.5/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

151 Differential and Distance Protection SIPROTEC 7SL86 Functions, application templates ANSI Functions Abbr. Available in 7SL86 Application templates SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/5 DIFF / DIS Basic DIFF / DIS overhead line, grounded systems DIFF / DIS MHO, overhead line, grounded systems DIFF / DIS overhead line, grounded syst. breaker-and-a-half Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O, N Distance protection Z< 87L Line differential protection for line ends I 87L Line differential protection for to 6 line ends I 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated W0p,tr> neutral with admittance method 67Ns Transient ground-fault function, for transient and permanent ground faults in resonant-grounded or isolated networks 68 Power-swing blocking ΔZ/Δt 74TC Trip-circuit supervision TCS 78 Out-of-step protection ΔZ/Δt 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 85/ Teleprotection for distance protection 85/7 Weak or no infeed: Echo and tripping WI 85/67N Teleprotection for directional ground-fault protection 86 Lockout 87L/87T Option for line differential protection: including power transformer ΔI Option for line differential protection: charging-current compensation 87N T Low impedance restricted ground-fault protection ΔI N 87STUB STUB differential protection (for breaker-and-a-half schemes) ΔI Broken-wire detection for differential protection Cont. Table/Functions on the next page * in preparation DIFF / DIS MHO, overhead line, grounded breaker-and-a-half

152 Differential and Distance Protection SIPROTEC 7SL86 Functions, application templates ANSI Functions Abbr. Table.5 /9 Cont. Table/Functions SIPROTEC 7SL86 Functions and application templates Available in 7SL86 DIFF / DIS Basic Application templates DIFF / DIS overhead line, grounded systems DIFF / DIS MHO, overhead line, grounded systems DIFF / DIS overhead line, grounded syst. breaker-and-a-half FL Fault locator FL FL Fault locator, two-ended measurement* FL-two PMU Synchrophasor measurement PMU Operational measured values, standard Measured values, expanded: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: DIFF / DIS MHO, overhead line, grounded breaker-and-a-half /6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

153 Differential and Distance Protection SIPROTEC 7SL87 Properties Properties SIPROTEC 7SL87 Main protection function Distance and differential protection Tripping - and -pole, min. tripping time 9 ms Inputs and outputs predefined standard variants with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or Hardware flexibility flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Line protection for all voltage levels with - and -pole tripping Phase-selective protection of overhead lines and cables with single- and multi-ended infeeds Used on lines of all lengths with up to 6 line ends Also used in switchgear with breaker-and-a-half schemes Transformers and compensating coils in the protection zone are possible Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Protection of lines with capacitive series compensation Two independent main protection functions with various protection algorithms Main protection: Differential protection with very short tripping time. The adaptive algorithm guarantees maximum sensitivity and stability, also in case of the most varied transformer errors, CT saturation and capacitive charging currents Main protection: 6-system distance protection with very short tripping time and high accuracy also when detecting CT saturation Adaptive power-swing blocking Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The combined differential and distance protection SIPROTEC 7SL87 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. Fig..5/ Differential and distance protection SIPROTEC 7SL87 Due to its high flexibility, it is suitable as selective protection equipment for overhead lines and cables with single- and multiended infeeds of all lengths with up to 6 ends. Transformers and compensating coils in the protection zone are also possible. The device is delivered with the aforementioned number of analog and binary inputs and outputs. Apart from that, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.5/0 on page.5/40 shows all functions that are available in the SIPROTEC 7SL87. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/0 on page.5/40 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SL87 basic differential and distance protection Phase-selective differential protection with - and -pole tripping Distance protection with - and -pole tripping for networks with all kinds of neutral point treatment Non-directional overcurrent protection as emergency or backup function Teleprotection functions Fault locator SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/7

154 Differential and Distance Protection SIPROTEC 7SL87 Application examples SIPROTEC 7SL87 differential and distance protection for overhead line in grounded systems Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point: Circuit-breaker failure protection, AR, synchronization function, voltage and frequency protection, thermal overload protection (Fig..5/). Busbar with line feeder QA 5 7SL87 V4 VT-ph I I I I4 V V V CT-ph VT-ph FG Line I-ph 67N 50HS 87L FL 50/ V-ph SIPROTEC 7SL87 differential and distance protection for overhead line in grounded systems for applications with breaker-and-a-half schemes Comprises the basic functions as well as additional functions that are typically required for the protection of overhead lines in networks with grounded neutral point. Prepared for applications with breaker-and-a-half schemes (Fig..5/4). FG Circuit breaker V-ph V-ph I-ph 5 50BF 79 CI PI Ctrl Com. Power line Teleprotection (85) can use conventional signalling or serial protection interface FG PI CI CB BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output CB Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes Ctrl Control FL Fault locator BI BO Fig Visio-Appl-Bsp_.pdf Fig..5/ Application example: Combined line differential and distance protection for overhead line.5/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

155 Differential and Distance Protection SIPROTEC 7SL87 Application examples Busbar. Power line Com. 7SL87 V V V VT-ph A-QA 5 B-QA 5 I I I I4 V V V V4 CI I I I I4 V4 CT-ph VT-ph CT-ph VT-ph FG Line I-ph Σ 87 67N 50HS STUB 87L FL 50/ V-ph PI FG Circuit breaker A-QA V-ph V-ph I-ph FG Circuit breaker B-QA V-ph V-ph 5 50BF 79 Ctrl 5 CB BI BO C-QA 5 I-ph 50BF 79 Power line Teleprotection (85) can use conventional signalling or serial protection interface Ctrl CB BI BO Fig Visio-Appl-Bsp_.pdf.5 Busbar Fig..5/4 FG PI CI CB Σ BI BO Function group Measuring point Protection interface Communication interface Circuit breaker Summation of currents Binary input Binary output Application example: Combined line differential and distance protection for overhead line with breaker-and-a-half scheme Distance protection 5 Synchrocheck, synchronizing function 7 Undervoltage protection 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 50BF Circuit-breaker failure protection 59 Overvoltage protection 67N Directional overcurrent protection for ground-faults 68 Power-swing blocking 79 Automatic reclosing 8 Frequency protection 85 Teleprotection schemes for and/or 67N 87L Differential protection, line 87STUB STUB Differential protection Ctrl Control FL Fault locator SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/9

156 Differential and Distance Protection SIPROTEC 7SL87 Functions, application templates Available in 7SL87 Application templates DIFF / DIS Basic DIFF / DIS overhead line, grounded systems ANSI Functions Abbr. Protection functions for -pole tripping -pole Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O, N Distance protection Z< 87L Line differential protection for line ends I 87L Line differential protection for to 6 line ends I 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, V/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x * Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>, (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral W0p,tr> with admittance method 67Ns Transient ground-fault function, for transient and permanent ground faults in resonant-grounded or isolated networks 68 Power-swing blocking ΔZ/Δt 74TC Trip-circuit supervision TCS 78 Out-of-step protection ΔZ/Δt 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 85/ Teleprotection for distance protection 85/7 Weak or no infeed: Echo and tripping 85/67N Teleprotection for directional ground-fault protection 86 Lockout 87L/87T Option for line differential protection: including power transformer ΔI Option for line differential protection: charging-current compensation 87N T Low impedance restricted ground-fault protection ΔI N 87STUB STUB differential protection (for breaker-and-a-half schemes) ΔI Broken-wire detection for differential protection Cont. Table/Functions on the next page DIFF / DIS overhead line, ground. syst. breaker-and-a-half.5/40 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

157 Differential and Distance Protection SIPROTEC 7SL87 Functions, application templates Application templates ANSI Functions Abbr. FL Fault locator FL FL Fault locator, two-ended measurement* FL-two Available in 7SL87 DIFF / DIS Basic DIFF / DIS overhead line, grounded systems PMU Synchrophasor measurement PMU Operational measured values, standard Measured values, expanded: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Table.5 / 0 Cont. Table/Functions SIPROTEC 7SL87 Functions and application templates DIFF / DIS overhead line, ground. syst. breaker-and-a-half * in preparation SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/4

158 Circuit-Breaker Management SIPROTEC 7VK87 Properties Properties SIPROTEC 7VK87 Main protection function Tripping Inputs and outputs Hardware flexibility Automatic reclosing, synchrocheck, circuitbreaker failure protection - and -pole or -pole Housing width / 9" to / 9" predefined standard variants with 4/4 or 8/8 current/voltage transformers, 5 to binary inputs, 8 to 46 binary outputs or flexibly adjustable I/O quantity structure within the scope of the SIPROTEC 5 modular system Automatic reclosing function and synchrocheck for line protection applications with - and -pole tripping Circuit-breaker failure protection with stages for - and -pole tripping Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The circuit-breaker management device SIPROTEC 7VK87 is a universal automation, protection and control device on the basis of the SIPROTEC 5 system. The device is used for automatic reclosing after - or -pole tripping of the circuit breaker after a short circuit. Before automatic reclosing after -pole tripping, the reliability of the reclosure can be checked by synchronization check. The SIPROTEC 7VK87 can also be used as a -stage circuitbreaker failure protection after - or -pole tripping by the main protection. The device can work together with conventional and digital protection equipment requiring only the pertinent pickup and tripping operations. The start and output signals can be connected via contacts or digital communication. Otherwise, the device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Fig..5/5 Circuit-breaker management SIPROTEC 7VK87 Functions Table.5/ on page.5/44 shows all functions that are available in the SIPROTEC 7VK87. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.5/ on page.5/44 shows the functional scope. For SIPROTEC 7VK87, the following application template exists: SIPROTEC 7VK87 basic circuit-breaker management device Automatic reclosing after -pole or -pole tripping Synchronization function Circuit-breaker failure protection for - and -pole tripping (Fig..5/6)..5/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

159 Circuit-Breaker Management SIPROTEC 7VK87 Application examples QA 5 Busbar with line feeder Power line 7VK87 V4 I I I I4 V V V FG CI CB BI BO VT-ph CT-ph VT-ph Function group Measuring point Communication interface Circuit breaker Binary input Binary output FG Circuit breaker V-ph V-ph I-ph 5 50BF 79 Ctrl CB BI BO CI 5 Synchrocheck, synchronizing function 50BF Breaker failure protection 79 Automatic reclosing Ctrl Control CI Protection device Optionally the information between protection device and breaker management device can be exchanged via binary inputs/outputs or via serial communication according to IEC6850/GOOSE Fig_5_Visio-Appl-Bsp_.pdf Fig..5/6 Application example: Circuit-breaker management device SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/4

160 Circuit-Breaker Management SIPROTEC 7VK87 Functions, application templates Application templates ANSI Functions Abbr. Protection functions for -pole tripping -pole Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, 8 Temperature supervision Θ> 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional overcurrent protection, phases I>, I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral W0p,tr> with admittance method 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 86 Lockout 87N T Low impedance restricted ground-fault protection ΔI N PMU Synchrophasor measurement PMU Operational measured values, standard Measured values, expanded: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: 0 The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Table.5 / * in preparation SIPROTEC 7VK87 Functions and application templates Available in 7VK87 Basic (AR, Sync., Circuit-breaker failure protection.5/44 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

161 Overcurrent Protection for Line SIPROTEC 7SJ86 Properties Properties SIPROTEC 7SJ86 Main protection function Overcurrent protection (U/AMZ) Tripping -pole Inputs and outputs predefined standard variants with 4/4 current/voltage transformers, to binary inputs, 9 to 5 binary outputs or Hardware flexibility flexibly adjustable and expandable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / 9" Overcurrent protection as line protection backup for all voltage levels with -pole tripping Also used in switchgear with breaker-and-a-half-schemes Selective protection of overhead lines and cables with single- and multi-ended feeders for use of protection data communication Suitable for radial, ring or any type of meshed systems of any voltage level with grounded, compensated or isolated neutral point Main protection: Directional and non-directional overcurrent protection for phasor- and ground-fault Overcurrent protection also configurable as emergency function Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances, and all available physical media (fiber-optic cable, -wire connections and communication networks) Control of switching devices Measurement of operating values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The overcurrent protection SIPROTEC 7SJ86 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection of lines and therefore it is optimally suitable for reserve or emergency protection for the line protection devices. Due to its high flexibility in using of protection-data communication it is suitable as selective protection equipment for overhead lines and cables with single- and multi-ended infeeds. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.5/ on page.5/47 shows all functions that are available in the SIPROTEC 7SJ86. Basically, all functions can be configured freely with DIGSI 5. For the application of some Fig..5/7 Overcurrent protection SIPROTEC 7SJ86 of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard appli cations. They comprise all basic configurations and default settings. Table.5/ on page.5/47 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 7SJ86 non-directional overcurrent protection Distance protection with -pole tripping for networks with all kinds of neutral point treatment Non-directional overcurrent protection also configurable as emergency function Circuit-breaker control. SIPROTEC 7SJ86 directional overcurrent protection Comprises the functions of the non-directional overcurrent protection Directional overcurrent protection for phases and ground, also configurable as emergency function Measuring-voltage failure detection. Fig..5/8 shows an application example for directional protection for overhead line. The functional scope is based on the application template directional overcurrent protection. In addition the functions fault locator and automatic reclosing were loaded from the DIGSI 5 library SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/45

162 Overcurrent Protection for Line SIPROTEC 7SJ86 Application examples Busbar with line feeder QA 5 Power line Fig..5/8 Com. 7SJ86 V4 I I I I4 V V V CI I-ph V-ph Teleprotection (85) can use conventional signalling or serial protection interface FG PI CI CB BI BO FG line I-ph U-ph PI Function group Measuring point Protection interface Communication interface Circuit breaker Binary input Binary output 85 67N 67 FL 50HS 50/5 Application example: directional overcurrent protection for overhead line FG Circuit breaker V-ph V-ph I-ph 79 Ctrl CB BI BO 50/5 Overcurrent protection, phases, ground 50HS High speed instantaneous overcurrent protection 67 Directional overcurrent protection, Phase 67N Directional overcurrent protection for ground-faults 79 Automatic reclosing 85 Teleprotection schemes Ctrl Control FL Fault locator Fig_7_7SJ86_Visio-Appl-Bsp_.pdf /46 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

163 Overcurrent Protection for Line SIPROTEC 7SJ86 Functions, application templates Available in 7SJ86 Application templates ANSI Functions Abbr. Protection functions for -pole tripping -pole Hardware quantity structure expandable I/O 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, V x Vx< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I<, P< 8 Temperature supervision Θ> 46 Negative-sequence system overcurrent protection with direction I>, U/I 47 Phase-sequence-voltage supervision LA, LB, LC 49 Thermal overload protection θ, I t 50HS High speed instantaneous overcurrent protection I>>> 50BF Circuit-breaker failure protection CBFP 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground faults I N >, I NP > 50Ns/5Ns Sensitive ground-current protection I Ns > Intermittent ground-fault protection I IE > 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, compounding Vcomp> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, V x Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>, I P (U,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (U,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated I Ns >, (U,I) neutral 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral with admittance method 67Ns Transient ground-fault function, for transient and permanent ground faults in W0p,tr> resonant-grounded or isolated networks 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 85/67N Teleprotection for directional ground-fault protection 86 Lockout 87L/87T Low impedance restricted ground-fault protection ΔI N FL Fault locator FL FL Fault locator, two-ended measurement * FL-two PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page * in preparation Non-directional overcurrent Directional overcurrent SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/47

164 Overcurrent Protection for Line SIPROTEC 7SJ86 Functions, application templates Cont. Table/Functions Application templates ANSI Functions Abbr. Operational measured values, standard Measured values, extended: Min., Max., Avg. (function points per type) Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function points: 0 5 Table.5 / The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SJ86 Functions and application templates Available in 7SJ86 Non-directional overcurrent Directional overcurrent /48 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

165 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line / s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC Line Protection Standard variants Standard variant for SIPROTEC 7SA84, 7SD84 Type /, 5 BI, 8 BO, 6 LED, 4 I, 4 V Run Housing width / 9", 5 binary inputs, 8 binary outputs ( lifecontact, standard, 5 fast), 6 LEDs, 4 current transformers, 4 voltage transformers.. Contains the modules: Base module with PS0 and IO4.. Standard variants for SIPROTEC 7SA86, 7SD86, 7SL86, 7SA87, 7SD87, 7SL87, 7VK87.4 Type /, 7BI, 4BO, 6 LED, 4 I, 4 V Run Housing width / 9", 7 binary inputs, 4 binary outputs ( lifecontact, 5 standard, 8 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO Type /, BI, 9 BO, 6 LED, 4 I, 4 V Run Housing width / 9", binary inputs, 9 binary outputs ( lifecontact, standard, 6 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO0. Type /, BI, BO, 6 LED, 4 I, 4 V Run.8.9. Housing width / 9", binary inputs, binary outputs ( lifecontact, standard, 8 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO08, expansion module IO Type 4 /, 9 BI, 0 BO, 6 LED, 4 I, 4 V Run Housing width / 9", 9 binary inputs, 0 binary outputs ( lifecontact, standard, 8 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO08, expansion module IO05..5 Type 5 /, BI, 7 BO (4P), 6 LED, 4 I, 4 V Run Housing width / 9", binary inputs, 7 binary outputs ( lifecontact, 6 standard, 6 fast, 4 power), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO0, expansion module IO04..6 Type 6 /, 5 BI, 8 BO (4HS), 6 LED, 4 I, 4 V Run Housing width / 9", 5 binary inputs, 8 binary outputs ( lifecontact, 5 standard, 8 fast, 4 high-speed), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO08, expansion module IO09. Type 7 /, 5 BI, 0 BO, 6 LED, 8 I, 8 V Run Housing width / 9", 5 binary inputs, 0 binary outputs ( lifecontact, 5 standard, 4 fast), 6 LEDs, 8 current transformers, 8 voltage transformers Contains the modules: Base module with PS0 and IO08, expansion module IO SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.5/49

166 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line / s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC Line Protection Standard variants.. Standard variants for SIPROTEC 7SA86, 7SD86, 7SL86, 7SA87, 7SD87, 7SL87, 7VK87 Type 8 /, BI, 46 BO, 6 LED, 4 I, 4 V Run Housing width / 9", binary inputs, 46 binary outputs ( lifecontact, 7 standard, 8 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO08, expansion modules IO05, IO05. Type 9 /, 9 BI, BO (4P), 6 LED, 4 I, 4 V Run Housing width / 9", binary inputs, 5 binary outputs ( lifecontact, 0 standard, 6 fast, 8 power), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO0, expansion modules IO04, IO Type 0 /, 7 BI, 4 BO (4HS), 6 LED, 4 I, 4 V Run Housing width / 9", 7 binary inputs, 4 binary outputs ( lifecontact, standard, 8 fast, 4 high-speed), 6 LEDs, 4 current transformers, 4 voltage transformers....4 Contains the modules: Base module with PS0 and IO08, expansion modules IO05, IO09. Type /, 7 BI, 6 BO, 6 LED, 8 I, 8 V Run Housing width / 9", 7 binary inputs, 6 binary outputs ( lifecontact, standard, 4 fast), 6 LEDs, 8 current transformers, 8 voltage transformers Contains the modules: Base module with PS0 and IO08, expansion modules IO0, IO05. Type 5/6, 7 BI, BO (8HS), 6 LED, 8 I, 8 V Run Housing width 5/6 9", 7 binary inputs, binary outputs ( lifecontact, 8 standard, 6 fast, 8 high-speed), 6 LEDs, 8 current transformers, 8 voltage transformers.5 Contains the modules: Base module with PS0 and IO08, expansion modules IO08, IO09, IO09. Standard variants for SIPROTEC 7SJ86 Type /, BI, 9 BO, 6 LED, 4 I, 4 V Run Housing width / 9", binary inputs, 9 binary outputs ( lifecontact, standard, 6 fast), 6 LEDs, 4 current transformers, 4 voltage transformers.6 Contains the modules: Base module with PS0 and IO Type /, 7 BI, 6 BO, 6 LED, 4 I, 4 V Run Housing width / 9", 7 binary inputs, 6 binary outputs ( lifecontact, 9 standard, 6 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO0, expansion modules IO06. Type /, BI, 5 BO, 6 LED, 4 I, 4 V Run Housing width / 9", binary inputs, 5 binary outputs ( lifecontact, 8 standard, 6 fast), 6 LEDs, 4 current transformers, 4 voltage transformers Contains the modules: Base module with PS0 and IO0, expansion modules IO05. The technical data for the line protection devices can be found in the line protection device manuals. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

167 Transformer Differential Protection SIPROTEC 7UT85, 7UT86, 7UT87 Answers for infrastructure and cities.

168 Transformer Differential Protection SIPROTEC 7UT8 Overview SIPROTEC 7UT8 transformer differential protection SIPROTEC 5 transformer differential protection is part of the modular system of SIPROTEC 5. It supports all SIPROTEC 5 system features, and can be used individually as well as universally in the framework of system solutions. In the following, the specific properties of the SIPROTEC 5 transformer differential protection is described. SIPROTEC 5 transformer protection devices are multifunctional devices whose main protection functions are based on the differential protection principle. They protect different types of transformers, such as two-winding, three-winding and multi-winding transformers with different numbers of measuring points and, besides standard power transformers, also autotransformers. The devices can be used in all voltage levels. The great number of protection and automatic functions permits use in all fields of electric power supply. The devices also contain important additional functions that are necessary for safe network operation today. This includes functions for protection, control, measurement and monitoring. The large number of communication interfaces and communication protocols satisfies the requirements of communication-based selective protection, as well as an automated operation. Commissioning and maintenance work can be completed safely, quickly and thus cost-effectively with high-performance test functions. Because of a modular structure design, the SIPROTEC 5 transformer differential protection can always be flexibly adapted to specific requirements. For devices with flexible configurability of the hardware quantity structure, you can select various standard variants when ordering. The device can be adapted by additional expansion modules individually to your specific applications (see Overview of the standard variants, page.6/8). Definition of device types based on designation Fig..6/ Main protection functions 7 XX YY Definition of device types Distinguishing features Basic distinguishing features 7 UT 85 Two winding transformer differential protection ( sides and max. 4 measuring points) 7 UT 86 Three winding transformer differential protection ( sides and max. 5 measuring points) 7 UT 87 Multiple winding transformer differential protection (5 sides and max. 7 measuring points) Table.6/ Distinguishing features Function library and application templates The extensive SIPROTEC function library is also available in the transformer differential protection devices. Thus, numerous protection functions such as overcurrent protection, overvoltage protection or frequency protection are available. These functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. In this catalog you will find predefined templates for standard applications. These templates are adapted to the basic transformer types and the typical scope of protection functions. They already contain basic configurations, required functions and default settings for standard applications SJ85 7UT8 7SK85 7KE85 6MD8 7SA87 7SD87 7SL87 7SS8 7KE85 7SJ85 6MD8 7SS8 7SA84 7SA86 7SJ85 7SD84 7SD86 7SJ8 7SJ85 7KE85 7SA84 7SA86 7SD84 7SJ8 7SJ85 7SK8. 6MD8 7SJ86 7VK87 7UT8 7KE85 7SJ86 7SL86 7UT8 7SD86 7SK G M G M Visio-Anwendungsbereiche_SIP5-us.pdf.7 Fig..6/ Application of SIPROTEC 5 devices.6/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

169 Transformer Differential Protection SIPROTEC 7UT85 Properties Properties SIPROTEC 7UT85 Brief description Main protection function Useful measuring point Differential protection for two-winding transformers for all voltage levels differential protection (standard- or autotransformer) with add-on stabilizations; Up to differential ground-fault protection 4 three-pole current measuring points one-pole current measuring points three-pole voltage measuring points Inputs and outputs predefined standard variants with 8 current transformers, 7 to 9 binary inputs, 7 to binary outputs Hardware flexibility Flexible adaptable and expandable I/Oquantity structure within the scope of the modular SIPROTEC 5 building blocks Housing width / 9 to / 9 Transformer protection for two-winding transformers with versatile additional protection functions Universal usability of the admissible measuring points Protection of standard power transformers, autotransformers, and motors Usable from medium up to extra-high voltage Protection of standard power transformers and autotransformers Typical properties of a transformer differential protection such as flexible adaptation to the transformer vector group, consideration of inrush and overexcitation processes, safe behavior in the case of current transformer saturation with different degrees of saturation Adaptive adjustment of the trip characteristic to the transformer tapping Increased sensitivity in the case of ground faults close to neutral through a separate ground-fault differential protection Further current and voltage inputs can be added for standard protection functions such as overcurrent, voltage, frequency, etc. Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Powerful automation with CFC (Continous Function Chart) Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Measurement of operational values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Additonal functions for simple tests and commissioning. Fig..6/ Transformer differential protection SIPROTEC 7UT85 (/ device = standard variant O) Applications The transformer differential protection SIPROTEC 7UT85 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection of two-winding transformers. It is the main protection for the transformer and contains many other protection and monitoring functions. The additional protection functions can also be used as backup protection for protected downstream objects (e.g. cables, line). The modular expansion capabilities of the hardware support you here. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.6/ on page.6/7 shows all functions that are available in the SIPROTEC 7UT85. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. You can use them directly or as a template for application-specific adaptations. Versatile applications are possible due to the available measuring points. Please, configure the application with DIGSI first before you order a device. Table.6/ on page.6/7 shows the functional scope of the device. You ascertain the function point requirement about the configurator SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

170 Transformer Differential Protection SIPROTEC 7UT85 Application examples Two winding basic (Fig..6/4) Differential protection (default setting for Yd), Overload protection, backup protection for the downstreamed power system Two winding basic with REF (restricted earth fault) (Fig..6/5) Differential protection (default setting for Yd), Differential ground-fault protection on the star side Overload protection, backup protection for the downstreamed power system Circuit-breaker failure protection Two winding in breaker-and-a-half application (Fig..6/6) Differential protection (default setting for Yd), Differential ground-fault protection on the star side Overload protection, backup protection for the downstreamed power system Circuit-breaker failure protection Fig..6/4 shows the typical structure of an application template, the used measuring points, the used function groups, the internal circuiting and the predefined functions. The twowinding transformer with differential ground-fault protection was selected as an example A-QA I-ph FG Transformer side I-ph 49 FG Circuit breaker A-QA I-ph Ctrl..4 Measured values CB BI BO.5 5 B-QA I-ph FG Transformer side I-ph 50 5 Measured values FG Transformer 87 FG Circuit breaker B-QA I-ph Ctrl CB BI BO Visio-Two_Wind_temp-0-us.pdf Fig..6/4 FG BI BO QA/CB Ctrl Function group Measuring point Binary input Binary output Circuit breaker Control 49 50/5 87 Application example: Protection of a two-winding transformer Overload protection Overcurrent protection Differential protection.6/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

171 Transformer Differential Protection SIPROTEC 7UT85 Application examples 5 A-QA.. I-ph FG Transformer side I-ph 49 87N Measured values FG Circuit breaker A-QA I-ph 50BF Ctrl CB BI BO I-ph FG Transf. neutral point I-ph 50N 5N FG Transformer Measured values. 5 B-QA I-ph FG Transformer side I-ph 50 5 Measured values FG Circuit breaker B-QA I-ph 50BF Ctrl CB BI BO Visio-Two_Wind_temp-0-us.pdf...4 FG BI BO QA/CB Function group Measuring point Binary input Binary output Circuit breaker 49 50BF 50/5 50N/5N 87 Overload protection Circuit-breaker failure protection Overcurrent protection Overcurrent protection, ground Differential protection.5 Ctrl Control 87N Ground-fault differential protection Fig..6/5 Application example: Two-winding transformer basic with REF SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

172 Transformer Differential Protection SIPROTEC 7UT85 Application examples B-QA A-QA I-ph FG Transformer side I-ph FG Circuit breaker A-QA I-ph 50BF.4.5 I-ph 49 87N Measured values Ctrl CB BI BO I-ph FG Transf. neutral point I-ph 50N 5N Measured values FG Transformer 87 FG Circuit breaker B-QA I-ph 50BF Ctrl CB BI BO C-QA I-ph FG Transformer side I-ph 50 Measured values 5 FG Circuit breaker C-QA I-ph 50BF Ctrl CB BI BO Visio-Two_Wind_temp-0-us.pdf FG BI Function group Measuring point Binary input 49 50BF 50/5 Overload protection Circuit-breaker failure protection Overcurrent protection BO Binary output 50N/5N Overcurrent protection, ground.5 QA/CB Ctrl Circuit breaker Control 87 87N Differential protection Ground-fault differential protection Fig..6/6 Application example: Two-winding transformer in breaker-and-a-half layout /6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

173 Transformer Differential Protection SIPROTEC 7UT85 Functions, application templates ANSI Functions Abbr. Available Application templates winding transf. basic (DIFF-protection) winding transf. (DIFF-protection, BF, REF) 87T Differential protection, transformer ΔI 87M Differential protection, motor ΔI 87N T Low impedance restricted ground-fault protection ΔI N Distance protection Z< 4 Overexcitation protection V/f 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, undercurrent, underpower Vx<, 7 Power protection active/reactive power P<>,Q<> 8 Temperature supervision θ > 46 Negative-sequence system overcurrent protection I>; I/I> 46 Unbalanced load protection I (t) 49 Thermal overload protection θ, I t 49H Hot spot calculation θh, I t 50BF Circuit-breaker failure protection CBFP 50/5 Definite/Inverse time-overcurrent protection I>, I P > 50N/5N Time overcurrent protection, ground I N >, I NP > 50HS High speed instantaneous overcurrent protection I>>> 50 Overcurrent protection, -phase Iph> 50Ns/5Ns Sensitive ground-current protection I N >, I NP > 55 Power factor cos φ 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, universal, Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>,I P (V,I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V,I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V,I) 74TC Trip circuit supervision TCS 8O Overfrequency protection f> 8U Underfrequency protection f< 86 Lockout 90V Automatic Voltage Control PMU Synchrophasor measurement PMU Standard measured values Measured values, extended: min, max, medium Switching statistic CFC standard CFC arithmetic CFC switching sequences for control applications Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding conductor Function points The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Table.6/ SIPROTEC 7UT85 Functions and application templates winding transf..5 CB (DIFFprotection,REF) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/7

174 Transformer Differential Protection SIPROTEC 7UT86 Properties Properties SIPROTEC 7UT86 Brief description Differential protection for three-winding transformers for all voltage levels Main protection function differential protection (standard) with add-on stabilizations; up to differential ground-fault protection for autotransformer applications differential protection functions in a function group autotransformer can be used. Useful measuring point 5 three-pole current measuring points 4 one-pole current measuring points three-pole voltage measuring points Inputs and outputs predefined standard variants with current transformers, 4 voltage transformers to binary inputs, 8 to 4 binary outputs Hardware flexibility Flexible adaptable and expandable I/Oquantity structure within the scope of the modular SIPROTEC 5 building blocks Housing width / 9 bis / 9 Transformer protection for three-winding transformers with versatile additional protection functions Universal usability of the admissible measuring points Protection of standard power transformers, autotransformers, and motors Usable from medium up to extra-high voltage Protection of standard power transformers and autotransformers Typical properties of a transformer differential protection such as flexible adaptation to the transformer vector group, consideration of inrush and overexcitation processes, safe behavior in the case of current transformer saturation with different degrees of saturation Adaptive adjustment of the trip characteristic to the transformer tapping Increased sensitivity in the case of ground faults close to neutral through a separate ground-fault differential protection Further current and voltage inputs can be added for standard protection functions such as overcurrent, voltage, frequency, etc. Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Powerful automation with CFC (Continous Function Chart) Safe serial protection data communication also across large distances and all available physical media (fiber optic, two-wire connections and communication networks) Measurement of operating variables Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Help functions for simple tests and easy commissioning. Fig..6/7 Transformer differential protection SIPROTEC 7UT86 (/ device = standard variant P) Applications The transformer differential protection SIPROTEC 7UT86 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection of three-winding transformers. It is the main protection for the transformer and contains numerous other protection and monitoring functions. In addition the protection functions can also be used as backup protection for following protected objects (for example cable, line). At this it supports also modular availablility of the hardware. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.6/ on page.6/0 shows all functions that are available in SIPROTEC 7UT86. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. You can use them directly or as a template for application-specific adaptations. Versatile applications are possible due to the available measuring points. Please, configure the application with DIGSI first before you order a device. Table.6/ on page.6/0 shows the functional scope of the device. You ascertain the function point requirement about the configurator..6/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

175 Transformer Differential Protection SIPROTEC 7UT86 Application examples The application templates for 7UT85 are also available in 7UT86. In addition, the following templates are available: Three winding basic Differential protection (default setting for Ydxdy) Autotransformer with delta winding Differential protection for complete transformer (auto transformer + delta winding) Differential ground-fault protection (neutral point + max. side current) Overload protection, backup protection for the downstreamed power system Circuit-breaker failure protection 5 5 B-QA A-QA I-ph I-ph V-ph I-ph FG Transformer side I-ph V -ph Measured values 87NT FG Transf. neutral point I-ph 50N 5N Three winding in breaker-and-a-half application (Fig..6/8) Differential protection (default setting for YNdxdy) Differential ground-fault protection on the neutral side Ground current-protection on the neutral side as backup protection for power systems Overload protection Circuit-breaker failure protection Frequency and voltage protection on the star winding side The application example (Fig..6/8) is the template for the protection of a three-winding transformer in a breaker-and-a-half layout. You can see the necessary three function groups for the transformer side, the integration of the ground-fault differential protection and the internal wiring and selected functions. A voltage transformer is installed on the high voltage in addition. For example, voltage and frequency limits can be monitored here. The necessary protection settings have to be made specifically for the system. FG Circuit breaker A-QA I-ph Ctrl FG Circuit breaker B-QA I-ph 50BF 50BF Ctrl CB BI BO Measured values CB BI BO 5 5 D-QA C-QA I-ph I-ph 4 FG Transformer side I-ph Measured values FG Transformer side I-ph Measured values FG Transformer 87T FG Circuit breaker C-QA I-ph 50BF Ctrl FG Circuit breaker D-QA I-ph 50BF Ctrl CB CB BI BO BI BO Visio-Kat-three-wind-us.pdf FG BI BO QA/CB Ctrl Function group Measuring point Binary input Binary output Circuit breaker Control 49 50BF 5N Overload protection Circuit-breaker failure protection Overcurrent protection, ground 59 Overvoltage protection 8 Frequency protection 87T Transformer differential protection 87NT Ground-fault differential protection transformer Fig..6/8 Application example: Protection of a three-winding transformer in breaker-and-a-half layout.7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/9

176 Transformer Differential Protection SIPROTEC 7UT86 Functions, application templates Application templates Functions Differential protection, transformer Abbr. winding transf. basic (DIFF-protection) winding transf..5 CB (DIFF-protection BF, REF) Autotransformer (DIFF-protection, BF, REF) winding transf. basic (DIFF-protection) ΔI 87T Node Differential protection, transformer (node protection) ΔI (node) 87M Differential protection, motor ΔI 87N T Low impedance restricted ground-fault protection Distance protection Overexcitation protection Synchrocheck, synchronizing function Undervoltage protection, -phase Undervoltage protection, positive-sequence system Undervoltage protection, -phase, undercurrent, underpower Power protection active/reactive power Temperature supervision Negative-sequence system overcurrent protection ΔIN Z< V/f Sync V< V< Vx< P<>,Q<> θ> I>; I/I> I(t) θ, I t θh, It CBFP I>, IP> , H 50BF 50/5 Unbalanced load protection Thermal overload protection Hot spot calculation Circuit-breaker failure protection Definite/Inverse time-overcurrent protection winding transf. (DIFF-protection, BF, REF) winding transf..5 CB (DIFFprotection, BF, REF) ANSI 87T Available 50N/5N Time overcurrent protection, ground IN>, INP> 50HS High speed instantaneous overcurrent protection I>>> 50 Overcurrent protection, -phase Iph> 50Ns/5Ns 55 Sensitive ground-current protection Power factor IN>, INP> cos φ N 59 60FL Overvoltage protection, -phase Overvoltage protection, positive-sequence system Overvoltage protection, negative-sequence system Overvoltage protection, zero-sequence system Overvoltage protection, -phase, universal, Measuring-voltage failure detection V> V> V> V0> Vx> 67 Directional time-overcurrent protection, phase I>,IP 67N Directional time-overcurrent protection for ground-faults IN>, INP (V,I) 67Ns INs>, 74TC Dir. sensitive ground-fault detection for systems with resonant or isolated neutral Trip circuit supervision TCS 8O 8U 86 90V PMU Overfrequency protection Underfrequency protection Lockout Automatic Voltage Control Synchrophasor measurement f> f< (V,I) (V,I) PMU Cont. Table / Functions on the next page / 0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

177 Transformer Differential Protection SIPROTEC 7UT86 Functions, application templates ANSI Table.6/ Cont. Table/Functions Application templates Functions Abbr. Standard measured values Measured values, extended: min, max, medium Switching statistic CFC standard CFC arithmetic CFC switching sequences for control applications Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding conductor Available winding transf. basic (DIFF-protection) winding transf..5 CB (DIFF-protection BF, REF) Autotransformer (DIFF-protection, BF, REF) winding transf. basic (DIFF-protection) winding transf. (DIFF-protection, BF, REF) winding transf..5 CB (DIFFprotection, BF, REF) Function points The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7UT86 Functions and application templates SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

178 Transformer Differential Protection SIPROTEC 7UT87 Properties Properties SIPROTEC 7UT87 Brief description Main protection function Useful measuring point Differential protection for multiple winding transformers for all voltage levels Up to differential protection with add-on stabilizations (in different function group transformer); Up to 5 differential ground-fault protection functions For autotransformer applications two differential protection functions in a function group autotransformer can be used. 7 three-pole current measuring points 5 one-pole current measuring points three-pole voltage measuring points Inputs and outputs predefined standard variants with 0 current transformers, 4 voltage transformers 5 to 7 binary inputs, to 8 binary outputs Hardware flexibility Flexible adaptable and expandable I/Oquantity structure within the scope of the modular SIPROTEC 5-building blocks Housing width / 9 bis / 9 Transformer protection for multiple winding transformers with multifunctional, additional protection functions (Multiple winding transfomer are typical with power converter applications (e.g. HVDC)) Transformer protection applications with up to 7 -pole current measuring points Concurrent differential protection for two parallel transformers (e.g. two two-winding transformers) Universal usability of the admissible measuring points Usable from medium up to extra-high voltage Protection of standard power transformers, autotransformers, and motors Protection of standard power transformers and autotransformers Typical properties of a transformer differential protection such as flexible adaptation to the transformer vector group, consideration of inrush and overexcitation processes, safe behavior in the case of current transformer saturation with different degrees of saturation Adaptive adjustment of the trip characteristic to the t ransformer tapping Increased sensitivity in the case of ground faults close to neutral through a separate ground-fault differential protection Further current and voltage inputs can be added for standard protection functions such as overcurrent, voltage, frequency, etc. Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Powerful automation with CFC (Continous Function Chart) Safe serial protection data communication also across large distances and all available physical media (fiber optic, two-wire connections and communication networks) Measurement of operating variables Fig..6/9 Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Help functions for simple tests and easy commissioning. Applications Transformer differential protection SIPROTEC 7UT87 (/ device = standard variant Q) The transformer protection device SIPROTEC 7UT87 is an universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for protection of multiple winding transformers (up to 5 sides). Furthermore, it is to be used where numerous measuring points (up to 7 -pole current measuring points) are required. Another application is simultaneous protection of two parallel transformers (additional fast backup protection). The SIPROTEC 7UT87 is the main protection for the transformer and includes numerous other protection and monitoring functions. In addition to the protection functions it can also be used as backup protection for the following protected objects (for example cable, line). It also supports modular availability of the hardware. The device supports all SIPROTEC 5 system characteristics. It enables futureoriented system solutions with high investment security and low operating costs. Functions Table.6/4 on page.6/7 shows all functions that are available in SIPROTEC 7UT87. Other than in 7UT86, two transformer function groups can be used in SIPROTEC 7UT87. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device..6/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

179 Transformer Differential Protection SIPROTEC 7UT87 Application examples Application templates All application templates which are described for the devices SIPROTEC 7UT85 and 7UT86 can be used in SIPROTEC 7UT87. In addition, the following template is available: Autotransformer with delta winding in breaker-and-a-half application (Fig..6/0) Differential protection for complete transformer (autotransformer + delta winding) Node protection for autotransformer winding to the capture of ground faults (three-phase capture of the neutral-point current) Overload protection, backup protection for the downstreamed power system Circuit-breaker failure protection Frequency and voltage protection on the upper voltage side. The application example (Fig..6/0) is the template for the protection of an autotransformer which is connected to a breaker-and-a-half layout. The special feature of this application is that the neutral-end currents can be detected directly per phase. A separate node point differential protection over the autotransformer winding detects safely ground faults and interturn faults. The classical differential protection is arranged over the entire transformer (autotransformer and delta winding). Both functions run in the function group autotransformer. This design provides a redundant differential protection which is supplementary with regard to sensitivity. A separate groundfault differential protection is not required. A voltage transformer is installed on the high voltage in addition. For example, voltage and frequency limits can be monitored here. The necessary protection settings have to be made specifically for the system B-QA A-QA I-ph I-ph FG Auto transformer side I-ph 49 V-ph 59 8 FG Circuit breaker A-QA I-ph 50BF Ctrl...4 V-ph Measured values CB BI BO FG Transformer FG Circuit breaker B-QA I-ph FG Auto transformer side I-ph T 87TNode I-ph 50BF Ctrl CB BI BO.5 Measured values FG Circuit breaker C-QA I-ph 4 Auto transformer FG compensation side I-ph 50 5 Measured values I-ph 50BF Ctrl CB BI BO C-QA D-QA FG Function group Measuring point BI Binary input BO Binary output QA/CB Circuit breaker Ctrl Control I-ph 5 Auto transformer ground FG side I-ph Measured values 49 50BF 50/5 Overload protection Circuit-breaker failure protection Overcurrent protection 59 Overvoltage protection 8 Frequency protection 87T Transformer differential protection 87TNode Differential protection auto transformer Ctrl Control FG Circuit breaker D-QA I-ph 50BF Ctrl CB BI BO Visio-Autotrans-us.pdf Fig..6/0 Application example: Protection of an autotransformer with delta winding (compensation side) in breaker-and-a-half layout.7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/

180 Transformer Differential Protection SIPROTEC 7UT87 Application examples....4 Since SIPROTEC 7UT87 is designed for special applications, you have to create your own application template for your specific application. Save it together with your device. To make your work easier, you can use an existing template and modify it. The following examples shall help you: Example : This example requires numerous three-phase current measuring points for a complex use in the field of power plant. Fig..6/ shows a possible configuration B-QA A-QA I-ph I-ph V-ph FG Transformer side I-ph N 5 87N V-ph 8 Measured values FG Transformer 87T FG Circuit breaker A-QA I-ph 50BF Ctrl CB BI BO.. I-ph FG Transf. neutral point I-ph 50N 5N FG Circuit breaker B-QA I-ph 50BF Ctrl. Measured values CB BI BO.4 I-ph FG Transformer side I-ph 50 5 FG Circuit breaker C-QA I-ph 50BF Ctrl I-ph 4 Measured values CB BI BO.5 I-ph 5 I-ph 6 FG Transformer side I-ph 50 5 Measured values FG Circuit breaker D-QA I-ph 50BF Ctrl CB BI BO F-QA C-QA D-QA E-QA I-ph 7 FG V, I standard I-ph 50 5 Measured values FG Circuit breaker E-QA I-ph 50BF Ctrl CB BI BO.9.0. G G FG Circuit breaker F-QA I-ph 50BF Ctrl CB BI BO Visio-7Messstellen-us.pdf FG BI BO QA/CB Ctrl Function group Measuring point Binary input Binary output Circuit breaker Control 7 Undervoltage protection Power protection 49 50BF 50/5 Overload protection Circuit-breaker failure protection Overcurrent protection 50N/5N Overcurrent protection, ground 59 Overvoltage protection 59N Overvoltage protection with zero-sequence voltage/residual voltage 8 Frequency protection 87T Transformer differential protection 87N Ground-fault differential protection.7 Fig..6/ Possible SIPROTEC 7UT87 application in a power station (up to seven -pole current measuring point).6/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

181 Transformer Differential Protection SIPROTEC 7UT87 Application examples Example : Another example (Fig..6/) is a powerful functional redundancy with parallel transformers. This doubles the differential protection function. One protection device is provided per transformer. Two differential protection functions run in every protection device. The nd differential protection function is the backup protection for the parallel transformer. For example, start here with an application template of the twowinding transformer and duplicate it. An alternative cost-optimized variant is the use of one device to protect both transformers A-QA 5 I-ph FG Transformer side FGTransformer FG Circuit breaker A-QA I-ph I-ph 50BF Ctrl Measured values 87T CB BI BO I-ph FG Transf. neutral point I-ph. Transformer Measured values.. I-ph FG Transformer side I-ph FG Circuit breaker B-QA I-ph 50BF.4 Ctrl Measured values B-QA 5 CB BI BO C-QA 5.5 I-ph FG Transformer side FG Transformer FG Circuit breaker C-QA I-ph I-ph 50BF Ctrl Measured values 87T CB BI BO.6 I-ph FG Transf. neutral point I-ph.7.8 Transformer Measured values.9.0 D-QA 5 FG BI BO QA/ CB Ctrl Function group Measuring point Binary input Binary output Circuit breaker Control I-ph 4 FG Transformer side 4 I-ph Measured values 50BF 87T FG Circuit breaker D-QA I-ph Circuit-breaker failure protection Differential protection 50BF Ctrl CB BI BO Visio--transformer-us.pdf Fig..6/ Protection of two parallel transformers with one SIPROTEC 7UT87.7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/5

182 Transformer Differential Protection SIPROTEC 7UT87 Application examples.. Example : The last example (Fig..6/) shows the protection of a converter transformer. Four sides and six measuring points are required here Infeed 5 A-QA S S DC CONVERTER.8 S4 S.9 Filter 5 I-ph FG Transformer side I-ph. Measured values.. 5 I-ph FG Transformer side I-ph.4 Measured values FG Circuit breaker A-QA FG BI BO QA/CB Ctrl 5 Filter Function group Measuring point Binary input Binary output Circuit breaker Control I-ph I-ph 4 I-ph 5 I-ph 6 FG Transformer side 4 I-ph Measured values FG Transformer side I-ph Measured values 50BF 87T FG Transformer 87T Circuit-breaker failure protection Differential protection I-ph 50BF Ctrl CB BI BO Visio-Umrichter-trans-us.pdf Fig..6/ Protection of a converter transformer.6/6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

183 Transformer Differential Protection SIPROTEC 7UT87 Functions, application templates ANSI Table.6/4 The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Functions SIPROTEC 7UT87 Functions and application templates Abbr. Available winding transf. basic (DIFF-protection) winding transf..5 CB (DIFF-protection, BF, REF) Application templates Autotransformer (DIFF-protection, BF, REF) Autotransformer +.5 CB ( DIFF-protection, BF, V,f) winding transf. basic (DIFF-protection) winding transf. (DIFF-protection, BF,REF) 87T Differential protection, transformer ΔI 87T Node Differential protection, transformer (node protection) ΔI (node) 87M Differential protection, motor ΔI 87N T Low impedance restricted ground-fault protection ΔI N Distance protection Z< 4 Overexcitation protection V/f 5 Synchrocheck, synchronizing function Sync 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, undercurrent, Vx< underpower, 7 Power protection active/reactive P<>,Q<> 8 Temperature supervision θ> 46 Negative-sequence system overcurrent protection I>; I/I> 46 Unbalanced-load protection (thermal) I (t) 49 Thermal overload protection θ, I t 49H Hot spot calculation θh, I t 50BF Circuit-breaker failure protection CBFP 50/5 Definite/Inverse time-overcurrent protection I>, I P > 50N/5N Time overcurrent protection, ground I N >, I NP > 50HS High speed instantaneous overcurrent protection I>>> 50 Overcurrent protection, -phase Iph> 50Ns/5Ns Sensitive ground-current protection I N >, I NP > 55 Power factor cos φ 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, negative-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 59 Overvoltage protection, -phase, universal, Vx> 60FL Measuring-voltage failure detection 67 Directional time-overcurrent protection, phase I>,I P (V,I) 67N Directional time-overcurrent protection, ground I N >, I NP (V,I) 67Ns Sensitive ground fault detection for systems with resonant and isolated neutral I Ns >, (V,I) 74TC Trip circuit supervision TCS 8O Overfrequency protection f> 8U Underfrequency protection f< 86 Lockout 90V Automatic Voltage Control PMU Synchrophasor measurement PMU Standard measured values Measured values, extended: min, max, medium Switching statistic CFC standard CFC arithmetic CFC switching sequences for control applications Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding conductor Function points winding transf..5 CB (DIFF-protection, BF, REF) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.6/7

184 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line /4 s Error SIPROTEC Line / s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC s SIPROTEC Transformer Differential Protection SIPROTEC 7UT8 Standard variants... Standard variants for SIPROTEC 7UT85 O /, 7BI, 7BO, 8I Run Housing width / 9", 7 binary inputs, 7 binary outputs ( life contact, standard, 4 fast), 8 current transformer inputs Contains the modules: Base module with PS0 and IO O /, 9 BI, BO, 8I Run Housing width / 9", 9 binary inputs, binary outputs ( life contact, 8 standard, 4 fast), 8 current transformer inputs Contains the modules: Base module with PS0 and IO0, expansion module IO Standard variants for SIPROTEC 7UT86 Run P /, BI, 8 BO, I, 4U Housing width / 9", binary inputs, 8 binary outputs ( life contact, 5 standard, fast), current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion module IO P /, BI, 4 BO, I, 4U Run Housing width / 9", binary inputs, 4 binary outputs ( life contact, standard, fast), current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules IO08, IO05. Standard variants for SIPROTEC 7UT87 Q /, 5 BI, BO, 0I, 4U Run.5 Housing width / 9", 5 binary inputs, binary outputs ( life contact, 5 standard, 6 fast), 0 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules IO08 und IO0. Q 5/6, 7 BI, 8 BO, 0I, 4 U Run.6 Housing width 5/6 9", 7 binary inputs, 8 binary outputs ( life contact, standard, 6 fast), 0 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules IO08, IO0 und IO05. The technical data for the transformer differential protection devices can be found in the device manual SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

185 Motor Protection SIPROTEC 7SK8, 7SK85 Answers for infrastructure and cities.

186 Motor Protection SIPROTEC 7SK8, 7SK85 Description Motor protection devices SIPROTEC 7SK8, 7SK85 SIPROTEC 5 motor protection devices are part of the modular system of SIPROTEC 5. They support all SIPROTEC 5 system features and can be used individually as well as universally in the framework of system solutions. This catalog describes specific features of the SIPROTEC 5 motor protection devices. SIPROTEC 5 motor protection devices are multifunctional devices and their main protection functions are based on specific motor protection functions and overcurrent protection functions. They protect low to medium power asynchronous motors. The devices also contain all important additional functions that are necessary for safe network operation today. This includes functions for protection, control, measurement and monitoring. A large number of communication interfaces and communication protocols meet the requirements of the communicationbased selective protection, as well as automated operation. Commissioning and maintenance work can be completed safely, quickly and thus cost-effectively with high-performance test functions. Due to a modular design, the SIPROTEC 5 devices can always be flexibly adapted to specific requirements. Features The two device types SIPROTEC 7SK8 and SIPROTEC 7SK85 offer different hardware configuration options. Basic distinguishing features 7SK8 Various hardware configurations are available for binary inputs and outputs within the / base module. 7SK85 Hardware configuration can be flexibly expanded and configured for analog inputs, binary inputs and outputs, measuring transducers and communication using /6 expansion modules. Table.7/ Overview of the different distinguishing features Function library and application templates A common function library provides all protection, automation, monitoring and additional functions for the SIPROTEC 5 devices. These functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. The tables on the following pages list the available functions from the library for every device type. Predefined templates are available in DIGSI for the standard applications. These templates already contain basic configurations, required functions and default settings SJ85 7UT8 7SK85 7KE85 6MD8 6MD8 7SA87 7SD87 7SJ86 7SL87 7SS8 7KE85 7VK87 7SJ85 7UT8 6MD8 7SS8 7KE85 7SA84 7SA86 7SJ85 7SJ86 7SD84 7SD86 7SL86 7SJ8 7SJ85 7UT8 7KE85 7SA84 7SA86 7SD84 7SD86 7SJ8 7SJ85 7SK8 7SK85.0 M... G M G Visio-Anwendungsbereiche_SIP5-us.pdf.4.5 Fig..7/ Application areas of the SIPROTEC 5 devices.6.7.7/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

187 Motor Protection SIPROTEC 7SK8 Properties Properties SIPROTEC 7SK8 Brief description Inputs and outputs Hardware flexibility Housing width Motor protection for small to medium size motors (00 kw to MW) 4 current transformers, 4 voltage transformers (optional), or binary inputs, 9 or 6 binary outputs. Various hardware configurations are available for binary inputs and outputs in the / base module, it is not possible to add /6 expansion modules, available with large and small display / 9 inch Motor protection functions: starting-time supervision, thermal overload protection for stator and rotor, restart inhibit, unbalanced load protection, load-jump protection Stator and bearing temperature monitoring via a temperature sensors with an external RTD-box Ground-fault protection (directional, non-directional) for the detection of stator ground-faults Directional and non-directional time-overcurrent protection (short circuit protection) with additional functions Detection of ground faults in systems with isolated or resonant neutral Overvoltage and undervoltage protection Power protection, configurable as active or reactive power protection Control, synchrocheck and system interlocking Powerful automation with graphical CFC (Continuous Function Chart) Integrated electrical Ethernet port J for DIGSI Single line presentation on a small or large display Complete IEC 6850 (reporting and GOOSE) via integrated port J Two optional pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, two-wire connections and communication networks) Measurement of operational values Phasor Measurement Unit (PMU) for synchrophasor-measured values and IEEE C7.8 protocol Powerful fault recording Additional functions for simple tests and easy commissioning. Fig..7/ 7SK8KDWEN.psd Motor protection SIPROTEC 7SK8 Front and rear view Applications The motor protection device SIPROTEC 7SK8 is a universal protection, control and automation device based on the SIPROTEC 5 system. It is specifically designed for the protection of low to medium power motors. Typical motor protection applications include: Protection against thermal overload of the stator due to overcurrent, cooling problems or dirt Protection against thermal overload of the rotor during starting due to frequent start-ups, prolonged start-ups or a locked rotor. Monitoring voltage unbalance or phase failure Monitoring the thermal state and bearing temperatures by temperature measuring Detection of overstressing of drives running idle for, e.g., pumps and compressors Detection of motor ground faults Motor protection against short circuits Protection against instability due to undervoltage. The SIPROTEC 7SK8 provides system solutions which are fit for the future and entail a high investment security and low operating costs. Functions Table.7/ on page.7/6 shows all functions that are available in SIPROTEC 7SK8. Basically, all functions can be freely configured with DIGSI 5. You need the appropriate number of free function points within the device for some of the functions. The function point calculator in the online configurator provides support in determining the number of function points required for your device. 7SK8_Rueckansicht_de_en.psd SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/

188 Motor Protection SIPROTEC 7SK8 Application templates Application templates Templates are available in DIGSI for the standard applications. They comprise basic configurations and default settings. You can use them directly or as a template for application-specific adaptations. Table.7/ on page.7/6 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: Current measurement Thermal overload protection for stator and rotor Starting-time supervision Restart inhibit Unbalanced-load protection (thermal) Temperature supervision Load-jam protection Overcurrent protection (non-directional) for phases and ground Transformer inrush-current detection. Current and voltage measurement Thermal overload protection for stator and rotor Starting-time supervision Restart inhibit Unbalanced-load protection (thermal) Temperature supervision Load-jam protection Overcurrent protection (non-directional) for phases and ground Transformer inrush-current detection Sensitive directional ground-fault detection for systems with isolated or resonant neutral and for detecting stator ground faults Overvoltage protection with zero-sequence system U0 Undervoltage protection with positive-sequence system U Fuse-failure monitor /4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

189 Motor Protection SIPROTEC 7SK8 Application examples Application example SIPROTEC 7SK8 protection of a medium-power motor An asynchronous medium-power motor (up to approx. MW) is protected against thermal and mechanical overloads and short circuits with the motor protection functions and the timeovercurrent protection of the SIPROTEC 7SK8. The directional sensitive ground-fault detection and overvoltage protection with zero-sequence voltage U0 detect stator ground faults in the motor. The thermal state of the motor and bearing temperatures 5 A-QA V-ph V-ph I-ph I-ph FG Motor V-ph I-ph 46 67Ns are acquired and monitored via an external RTD-box. The RTD-box is connected to the device via Ethernet or serial communication. Fig..7/ shows the function scope and the basic configuration of a 7SK8 for this application. The basis is the application template "current and voltage measurement". Additionally, the device has to be equipped with a plug-in module for communication with the RTD-box. 59N R 49S N 8 SOTF FG Circuit breaker A-QA I-ph Ctrl CB BI BO FG Analog Units M RTD CI RTD Visio-7SK8-us.pdf.5 Fig..7/ FG BI BO QA/CB RTD CI Ctrl Function group Measuring point Binary input Binary output Circuit breaker RTD-Unit Communication interface Control 7 Undervoltage protection 8 Temperature monitoring 46 Unbalanced-load protection 48 Motor-starting time supervision 49R 49S 50/5 5N Application example: Protection of a medium-power motor Rotor overload protection Stator overload protection Overcurrent protection, phases Overcurrent protection, ground 59N Overvoltage protection with zero-sequence voltage/residual voltage 66 Restart inhibit 67Ns Directional sensitive ground-fault detection SOTF Instantaneous tripping at switch onto fault SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/5

190 Motor Protection SIPROTEC 7SK8 Functions, application templates Application templates ANSI Functions Abbr. 4 Locked rotor protection I> + n< FL Fault locator FL 5 Synchrocheck, synchronizing function Sync. 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, universal VX<, 7 Power protection active/reactive power P<>, Q<> 8 Temperature supervision θ 46 Negative-sequence system overcurrent protection I>, I/I> 46 Negative-sequence system overcurrent protection with direction I> (V, I) 46 Unbalanced-load protection (thermal) I t > 47 Phase-sequence-voltage supervision LA, LB, LC 48 Starting-time supervision I anl 49R Rotor overload protection I t 49S Stator overload protection θ, I t 50/5 Overcurrent protection, Phase I>, I p 50N/5N Overcurrent protection, ground I N >, I NP 50HS High speed instantaneous overcurrent protection I>>> 50N/5N Overcurrent protection, -phase I N >, I NP 50Ns/5Ns Sensitive ground-current protection I Ns >, I Nsp Intermittent ground-fault protection I IE > 50BF Circuit-breaker failure protection CBFP 50L Load-jam protection I> L 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, negative-sequence system V> 59 Overvoltage protection, -phase, universal, Vx> 59N Overvoltage protection, zero-sequence system V0> 60FL Measuring-voltage failure detection 66 Restart inhibit I t 67 Directional time-overcurrent protection, phase I>, I P (V, I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V, I) 67Ns Dir. sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V, I) 67Ns Transient ground-fault function, for transient and permanent ground faults in resonantgrounded W0p,tr> or isolated networks 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 86 Teleprotection PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page Available in 7SK8 Measurement Current and voltage measurement.7/6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

191 Motor Protection SIPROTEC 7SK8 Functions, application templates Cont. Table/Functions Application templates ANSI Functions Abbr. Operational measured values, standard Measured values, extended: Min, Max, Avg Switching-statistic counters Motor-statistic CFC standard CFC arithmetic CFC switching sequences for control applications Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function-points class: 0 40 The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Available in 7SK8 Measurement Current and voltage measurement Table.7/ SIPROTEC 7SK8 Functions and application templates.5 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/

192 Motor Protection SIPROTEC 7SK85 Properties Properties SIPROTEC 7SK85 Brief description Inputs and outputs Hardware flexibility Housing width Motor protection for all motor sizes predefined standard variants with 4 current transformers, 4 voltage transformers, to 7 binary inputs, 9 to 7 binary outputs. Flexibly adaptable and expandable I/O quantity structure within the scope of the modular SIPROTEC 5 building block, /6 expansion modules can be added Available with large or small display or without display / 9 inch to / 9 inch Motor protection functions: starting-time supervision, thermal overload protection for stator and rotor, restart inhibit, unbalanced load protection, load-jump protection Stator and bearing temperature monitoring via a temperature sensors with an external RTD-box Motor differential protection as fast short-circuit protection for large-power motors Ground-fault protection (directional, non-directional) for the detection of stator ground-faults Directional and non-directional time-overcurrent protection (short-circuit protection) with additional functions Detection of ground faults in systems with isolated or resonant neutral Overvoltage and undervoltage protection in all required versions Power protection, configurable as active or reactive power protection Control, synchrocheck and system interlocking Powerful automation with graphical CFC (Continuous Function Chart) Integrated electrical Ethernet port J for DIGSI IEC 6850 (reporting) via integrated port J Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, two-wire connections and communication networks) Measurement of operational values Synchrophasor measured values and IEEE C7.8 protocol integrated (PMU) Powerful fault recording Additional functions for simple tests and easy commissioning. Fig..7/4 Motor protection device SIPROTEC 7SK85 (/ device with large graphical display and /6 expansion module with key switch front panel) Applications The motor protection device SIPROTEC 7SK85 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is specifically designed for the protection of low to medium power motors. Typical motor protection applications include: Protection against thermal overload of the stator due to overcurrent, cooling problems or dirt Protection against thermal overload of the rotor during starting due to frequent start-ups, prolonged start-ups or a locked rotor Monitoring voltage unbalance or phase failure Monitoring the thermal state and bearing temperatures by temperature measuring Detection of overstressing of drives running idle for e.g., pumps and compressors Detection of motor ground faults Motor protection against short circuits Protection against instability due to undervoltage. The SIPROTEC 7SK85 supports all SIPROTEC 5 system properties. It provides system solutions that are fit for the future and entail high investment security and low operating costs. Functions Table.7/ on page.7/ shows all functions that are available in SIPROTEC 7SK85. Basically, all functions can be freely configured with DIGSI 5. You need the appropriate number of free function points within the device for some of the functions. The function point calculator in the online configurator provides support in determining the number of function points required for your device..7/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

193 Motor Protection SIPROTEC 7SK85 Application templates Application templates Templates are available in DIGSI for the standard applications. They comprise basic configurations and default settings. You can use them directly or as a template for application-specific adaptations. Table.7/ on page.7/ shows the functional scope and the function point requirement for the application templates described. The following application templates are available: Current measurement Thermal overload protection for stator and rotor Starting-time supervision Restart inhibit Unbalanced-load protection (thermal) Temperature supervision Load-jam protection Overcurrent protection (non-directional) for phases and ground Transformer inrush-current detection. Current and voltage measurement Thermal overload protection for stators and rotors Starting-time supervision Restart inhibit Unbalanced-load protection (thermal) Temperature supervision Load-jam protection Overcurrent protection (non-directional) for phases and ground Transformer inrush-current detection Sensitive directional ground-fault detection for systems with isolated or resonant neutral and for detecting stator ground faults Overvoltage protection with zero-sequence system U0 Undervoltage protection with positive-sequence system U Fuse-failure monitor. Motor differential protection, Current and voltage measurement Motor differential protection Thermal overload protection for stators and rotors Starting-time supervision Restart inhibit Unbalanced-load protection (thermal) Temperature supervision Load-jam protection Overcurrent protection (non-directional) for phases and ground Transformer inrush-current detection Sensitive directional ground-fault detection for systems with isolated or resonant neutral and for detecting of stator ground faults Overvoltage protection with phase-sequence system U0 Undervoltage protection with positive sequence system U Measuring voltage failure supervision SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/9

194 Motor Protection SIPROTEC 7SK85 Application examples Application example SIPROTEC 7SK85 protecting a medium power motor An asynchronous medium-power motor (up to approx. MW) is protected against thermal and mechanical overloads as well as short circuits with the motor protection functions and timeovercurrent protection of the 7SK85. The directional sensitive ground-fault detection and overvoltage protection with zerosequence voltage U0 detect stator ground faults in the motor. The thermal state of the motor and bearing temperatures are acquired and monitored via an external RTD-box. The RTD-box is connected to the device via Ethernet or serial communication. Fig..7/5 shows the function scope and the basic configuration of a SIPROTEC 7SK8 for this application. The application template "current and voltage measurement" is used as a basis. Additionally, the device has to be equipped with a plug-in module for communication with the RTD-box A-QA V-ph V-ph FG Motor V-ph 67Ns 59N 7.. I-ph I-ph R 49S N SOTF FG Circuit breaker A-QA I-ph. Ctrl.4 I-ph 8 CB BI BO FG Analog Units.5 M FG BI BO QA/CB RTD CI Function group Measuring point Binary input Binary output Circuit breaker RTD 7 Undervoltage protection 8 Temperature monitoring 46 Unbalanced-load protection 48 Motor-starting time supervision 49R Rotor Overload protection Visio-7SK85-us.pdf.6 RTD CI Ctrl RTD-Unit Communication interface Control 49S 50/5 5N Stator overload protection Overcurrent protection, phases Overcurrent protection, ground N Overvoltage protection with zero-sequence voltage/residual voltage 66 Restart inhibit 67Ns Directional sensitive ground-fault detection SOTF Instantaneous tripping at switch onto fault Fig..7/5 Application example: Protection of a medium-power motor.7/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

195 Motor Protection SIPROTEC 7SK85 Functions, application templates Application templates ANSI Functions Abbr. 4 Locked rotor protection I> + n< FL Fault locator FL 5 Synchrocheck, synchronizing function Sync. 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 7 Undervoltage protection, -phase, universal VX< 7Q Undervoltage-controlled reactive power protection Q>/V<, 7 Power protection active/reactive power P<>, Q<> 7 Undercurrent protection I< 8 Temperature supervision θ 46 Negative-sequence system overcurrent protection I>, I/I> 46 Negative-sequence system overcurrent protection with direction I> (V, I) 46 Unbalanced-load protection (thermal) I t > 47 Phase-sequence-voltage supervision LA, LB, LC 48 Starting-time supervision I start 49R Rotor overload protection I t 49S Stator overload protection θ, I t 50/5 Overcurrent protection, Phase I>, I p 50N/5N Overcurrent protection, ground I N >, I NP 50HS High speed instantaneous overcurrent protection I>>> 50N/5N Overcurrent protection, -phase I N >, I NP 50Ns/5Ns Sensitive ground-current protection I Ns >, I NsP Intermittent ground-fault protection I IE 50BF Circuit-breaker failure protection CBFP 50L Load-jam protection I>L 5V Voltage dependent overcurrent protection t=f(i)+v< 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59 Overvoltage protection, negative-sequence system V> 59 Overvoltage protection, -phase, universal Vx> 59N Overvoltage protection, zero-sequence system V0> 60FL Measuring-voltage failure detection 66 Restart inhibit I t 67 Directional time-overcurrent protection, phase I>,I P (V, I) 67N Directional time-overcurrent protection for ground-faults I N >, I NP (V, I) 67Ns Sensitive ground-fault detection for systems with resonant or isolated neutral I Ns >, (V, I) 67Ns Transient ground-fault function, for transient and permanent ground faults in resonantgrounded W0p,tr> or isolated networks 74TC Trip-circuit supervision TCS 79 Automatic reclosing AR 8O Overfrequency protection f> 8U Underfrequency protection f< 8R Rate-of-frequency-change protection df/dt 86 Teleprotection 87M Differential protection, motor ΔI PMU Synchrophasor measurement PMU Cont. Table/Functions on the next page Available in 7SK85 Measurement Current and voltage measurement SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/

196 Motor Protection SIPROTEC 7SK85 Functions, application templates Cont. Table/Functions Application templates ANSI Functions Abbr. Operational measured values, standard Measured values, extended: Min, Max, Avg Switching-statistic counters Motor-statistic CFC standard CFC arithmetic CFC switching sequences for control applications Inrush current detection External trip initiation Control Fault recording of analog and binary signals Monitoring and supervision Protection interface, serial Circuit breaker Disconnector/Grounding switch Function-points class: 0 40 The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: Available in 7SK85 Measurement Current and voltage measurement Table.7/ SIPROTEC 7SK85 Functions and application templates / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

197 s Run Error SIPROTEC Line /4 s Run Error SIPROTEC Line /4 s Run Error SIPROTEC Line /4 s Run Error SIPROTEC Line / Motor Protection SIPROTEC 7SK8 Standard variants Standard variants for SIPROTEC 7SK8 T T T T4 T5 /, BI, 9 BO, 4 I Housing width / x 9" binary inputs, 9 binary outputs ( life contact, 8 standard), 4 current transformer inputs Contains the modules: Base module with PS0 and IO0 /, BI, 6 BO, 4 I Housing width / x 9" binary inputs, 6 binary outputs ( life contact, 5 standard), 4 current transformer inputs Contains the modules: Base module with PS0, IO0 and IO0 (in preparation) /, BI, 9 BO, 4 I, 4 V Housing width / x 9" binary inputs, 9 binary outputs ( life contact, 8 standard), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0 /, BI, 6 BO, 4 I, 4 V Housing width / x 9" binary inputs, 6 binary outputs ( life contact, 5 standard), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0, IO0 and IO0 The technical data can be found in the device manual under SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.7/

198 s Run Error SIPROTEC Line /4 s Run Error SIPROTEC Line /4 s Run Error SIPROTEC Line / s SIPROTEC s SIPROTEC Motor Protection SIPROTEC 7SK85 Standard variants Standard variants for SIPROTEC 7SK85 R R /, BI, 9 BO, 4 I, 4 V Housing width / x 9" binary inputs, 9 binary outputs ( life contact, standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0 /, 7 BI, 6 BO, 4 I, 4 V Housing width / x 9" 7 binary inputs, 6 binary outputs ( life contact, 9 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs.8 Contains the modules: Base module with PS0 and IO0, expansion module IO R /, 7 BI, 7 BO, 4 I, 4 V Housing width / x 9" 7 binary inputs, 7 binary outputs ( life contact, 0 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion module IO07 The technical data can be found in the device manual under SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

199 Busbar Protection SIPROTEC 7SS85 Answers for infrastructure and cities.

200 Busbar Protection SIPROTEC 7SS85 Description Busbar protection SIPROTEC 7SS85 Busbar protection devices SIPROTEC 7SS85 are part of the modular SIPROTEC 5 series and are based in their main function on the principle of differential protection. They protect busbars of the most various types and all voltage levels with the highest selectivity. Additional protection and control functions extend the scope of application to a comprehensive station protection. The SIPROTEC 7SS85 is suited for the following system configurations Single busbars with/without transfer busbar Double busbars with/without transfer busbar Triple busbars Breaker-and-a-half layout Double circuit-breaker arrangement and or current transformers per feeder Truck-type switchgear Systems with combined busbars (optionally main/transfer busbar) T circuit arrangements (stub-fault protection) H circuit arrangement with coupler or disconnection Ring busbars Meshed corners. You set the maximum functional scopes of your device through Significant Features. Each significant feature is fixed by a short form. Short form Functional scope 9 bus zone, measuring points, bays A B C D E Table.8 / bus zones, 5 ) measuring points, 9 ) bays bus zones, disconnector image, 5 ) measuring points, 9 ) bays 4 bus zones, 5 ) measuring points, 9 ) bays 4 bus zones, disconnector image, 5 ) measuring points, 9 ) bays Circuit-breaker failure protection for 4 bus zones, disconnector image, 5 measuring points, 9 bays Maximum functional scope of significant features Applications The busbar protection SIPROTEC 7SS85 encompasses the following maximum quantity structure 5 ) -phase measuring points (current transformer) 9 ) bays (feeders, couplers, bus-section disconnections) 4 bus zones (busbar sections with measuring function) 4 couplers (with or current transformers) auxiliary busbars (busbar sections without measuring function)..5 ) In preparation: SIPROTEC 5 Version 4 supports 0 measuring points and 4 bays SJ85 7UT8 7SK85 7KE85 6MD8 7SA87 7SD87 7SL87 7SS8 7KE85 7SJ85 6MD8 7SS8 7SA84 7SA86 7SJ85 7SD84 7SD86 7SJ8 7SJ85 7KE85 7SA84 7SA86 7SD84 7SJ8 7SJ85 7SK8.0 6MD8 7SJ86 7VK87 7UT8 7KE85 7SJ86 7SL86 7UT8 7SD86 7SK85. M. G..4 M.5 G.6.7 Fig..8/ Application of SIPROTEC 5 devices.8/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

201 Busbar Protection SIPROTEC 7SS85 Properties Properties The busbar protection SIPROTEC 7SS85 is a selective, safe, and fast protection against busbar short circuits in medium-voltage, high-voltage and very high voltage systems with the most various busbar configurations. Selection of the device basis functionalities (significant features) and the modular hardware structure allow an optimum adaptation of the SIPROTEC 7SS85 to the most various system configurations and functional requirements. Characteristics of the SIPROTEC 7SS85 Phase-selective measurement and display Selective tripping of faulty busbar sections Connector-independent check zone as additional tripping criterion Shortest tripping times (<0 ms) for ensuring network stability and minimization of damage to the system Highest stability in case of external faults, also in case of transformer saturation through stabilization with flowing currents Operate curve with freely adjustable characteristic-curve sections Additional operate curve with increased sensitivity for lowcurrent faults, for example in resistance-grounded networks Only ms saturation-free time of the current transformer required through fast recognition of internal and external faults Use of closed iron core or linearized current transformer transformers within one substation possible Adaptation of different current transformer ratio per parameterization Uncomplicated dimensioning of the current transformers and the stabilization factor interdependent methods of measurement make possible the shortest tripping times in case of busbar faults and ensure maximum stability in case of large flowing shortcircuit currents The integrated circuit-breaker failure protection recognizes circuit-breaker faults in case of busbar short-circuits and generates a tripping signal for the circuit breaker at the remote line end. In case of a failure of a coupler circuit breaker, the adjacent busbar is tripped Comprehensive monitoring of the current circuits, the measured-value processing and trip circuits prevent over-functions and under-functions of the protection and reduce the effort for routine checks Various control possibilities, such as bay out of service, acquisition blocking for disconnectors and circuit breakers, blocking of protection zones or of the entire circuit-breaker failure protection, make the adaptation to operationally-caused special states of your system easier Optional /- or -pole circuit-breaker failure protection with use of the integrated disconnector image to trip of all circuit breakers of the concerned busbar section Fig..8/ Busbar protection SIPROTEC 7SS85 Optional end-fault protection for the protection of the area between circuit breaker and current transformer for feeders and couplers Direct tripping of protection zones through external signals Release of tripping of a protection zone through additional external signals Release of tripping through additional, external phaseselective signals. Functions Table.8/ on page.8/0 shows all functions that are available in SIPROTEC 7SS85. Basically, all functions can be configured freely with DIGSI 5. To use some of the functions, you require the appropriate number of free function points within the device. The function-point calculator in the online configurator provides support in determining the required number of function points for your device. During the project engineering with DIGSI 5 you get also the required function points. Function library and application templates A common function library makes all protection, automation, monitoring, and auxiliary functions available for the SIPROTEC 5 devices. Thus, the same functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. For busbar protection SIPROTEC 7SS85, additional, specific library elements are provided. The flexibility of the SIPROTEC 7SS85 allows the protection of a number of possible system constellations. In place of application templates, DIGSI 5 provides a comfortable, fully graphical interface for complete engineering of your busbar protection SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/

202 Busbar Protection SIPROTEC 7SS85 Properties Significant features You select the basic device functionalities with the significant features. These are oriented to typical system constellations or applications. For the devices SIPROTEC 7SS85, a standard variant (V, V, V) is associated with each significant feature. The device can be adapted to your special application through additional extension modules (see Overview of the standard variants, page.8/). System engineering and parameterization Table.8/ contains the respective basic scope of bays and the hardware degree of expansion in accordance with the associated standard variant. You need additional function points for further bays. The significant feature E (circuit-breaker failure protection) is special. The main protection function here is circuit-breaker failure protection. The device allows the realization of an independent, complete backup protection in case of the failure of circuit-breaker failure in the station. Significant features Short form 9 A B C D E Main protection function Busbar protection Circuit-breaker failure protection for busbars Bus zones Measuring points -ph (maximum) Bays (maximum) Bays (incl.in the basic) Associated standard variant V V V V V V incl. measuring points -ph Table.8 / Significant features and standard variants The single line diagram describes the primary topology of your system. Add a device SIPROTEC 7SS85 from the DIGSI 5 library as well as the required function blocks. Connect the primary elements of the single line diagram (busbars, current transformers, disconnectors, circuit breakers) with the inputs and outputs of the device. Thus a topological reference is created. In DIGSI 5 online mode, all important information on commissioning, operation, and analysis are shown in a single line diagram. In addition to the measured values of the feeders and of the protection zones, the switch positions are shown. Additionally, you receive information about special operational states, for example in Bay out of service or reduced protection selectivity, for example with direct coupling of busbars via disconnectors (busbar shunt by disconnectors). Flexible adaptation to the most various busbar configurations and simple extensibility is guaranteed by the use of standardized SIPROTEC 5 hardware..8/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

203 Busbar Protection SIPROTEC 7SS85 Properties Characteristic curves with increased sensitivity In resistance-grounded networks, single-phase short-circuits lie in the range of the rated currents. In order to also provide a busbar protection with appropriate sensitivity in these cases, an independent characteristic curve is available. This characteristic curve provides separated parameters for the threshold, as well as for a restriction of the range of effectiveness. For this case the integrated circuit-breaker failure protection has a corresponding characteristic curve. Differential current Idiff Fault characteristic The activation of the characteristic curve takes place via a binary input. A common criterion is the recognition of a high residual voltage as an indication of a single-pole fault. Differential current Idiff Fault characteristic Tripping range k Tripping range k.. _:09:00 P 0 45 Stabilization range Operating curve Restraint current Irest,mod _:09:00 P _:09:0 P 0 _:09:0 P Area of higher sensitivity Stabilization range Operating curve Restraint current Irest,mod..4 Fig..8/ Standard characteristic curve Fig..8/4 Sensitive characteristic curve.5 Disconnector image In case of multiple busbars, bays are switched to various busbar sections (protection zones) with disconnectors. For correct assignment of the bay currents to the appropriate protection zones, the position of the disconnector is needed in the busbar as well as circuit-breaker failure protection. Dynamic administration of the switching states occurs via the disconnector image integrated into the device. In case of a busbar fault, the necessary trip commands for the individual circuit breakers are also formed via the disconnector image. The following properties distinguish this function: Processing of up to 9 bays and 4 busbar sections Supervision of disconnector runtime and position Through the assignment Disconnector NOT off = Disconnector on by software, there is no need for adjusted disconnector auxiliary contacts Storage of the disconnector position in case of an auxiliary-voltage failure Comfortable graphical engineering with the operating program DIGSI 5 Dynamic graphical visualization of the switchgear with DIGSI 5 in online mode SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/5

204 Busbar Protection SIPROTEC 7SS85 Application examples.. Project engineering of a double busbar The following Fig..8/5 shows a typical structure of engineering with DIGSI 5, the measuring points used, the function groups used, and their interconnections QB Bay QB Bus coupler bay 5... Bay 7SS85 BB BB I-ph FG Cur. transformer BE I-ph FG Disconnector QB FG Disconnector QB FG Circuit breaker QA I-ph 50BF 50EF Ctrl CB BI BO..4 QA 5 FG Busbar Fig..8/5 BE 87B 50BF inh. Check zone Bus zone Bus zone Supervision 50BF Circuit-Breaker Failure Protection 50EF End-Fault Protection 87B Busbar Differential Protection Ctrl Control Application example: Project engineering of a double busbar Visio-Verbindungen_Feld_Koppl-enUS-0.pdf /6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

205 Busbar Protection SIPROTEC 7SS85 Application examples Stub protection The differential protection for so-called stubs requires a protection zone and inputs for current measuring points. With the significant feature 9 (differential protection for a protection zone, measuring points and bays), a tailored solution is available for you. With such devices, a so-called H circuit can also be protected, if a circuit breaker and a current transformer exist in the connection. Fig..8/6 Application example: Stub Protection of a single busbar Single busbars can be segmented into several sections using bus-section couplers (circuit breakers and current transformers) or busbar disconnectors. With the variant with bus-section coupler, every zone is selectively protectable. With the variant with bus-section disconnectors, selective protection is possible only with open disconnectors. For this, the disconnector position must be recorded in the device. According to the number of the busbar sections, the significant feature A (differential protection for protection zones, 5 measuring points and 9 bays) or the significant feature C (differential protection for 4 protection zones, 5 measuring points and 9 bays) are used. For more than 4 zones and bus-section couplers, two SIPROTEC 7SS85 devices are used BE QA BE Fig..8/7 QA QA QA QA QA QA QA BE BE BE BE BE BE BE Application example: Single busbar with 7 feeders and bus-section coupler SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/7

206 Busbar Protection SIPROTEC 7SS85 Application examples H circuits can be looked at as two single busbars, each with feeders on both sides of the coupling or disconnection. Accordingly, the significant feature A (differential protection for protection zones, 5 measuring points and 9 bays) is used. The SIPROTEC 7SS85 must be configured for 5 bays. Protection of a breaker-and-a-half arrangement Busbars according to breaker-and-a-half layout allow the uninterrupted operation of infeeds and outgoing feeders, also in the case of a failure of a busbar. They are therefore commonly operated while interconnected. Breaker-and-a-half arrangements are protected like single busbars. For a system in accordance with Fig..8/9, a SIPROTEC 7SS85 device of the significant feature A (differential protection for protection zones, 5 measuring points and 5 bays) is needed. The SIPROTEC 7SS85 must be set up for 0 bays (in correspondence with 5 cross branches, so-called Diameters ). 5 5 Fig..8/8 5 H-circuit with coupler 5 5 H circuit with coupler or disconnector In case of more than 4 feeders (7 diameters), one SIPROTEC 7SS85 device is used per busbar. The middle circuit breakers and current transformers are not relevant to the busbar-differential protection. In the 7SS85, however, a system-encompassing circuit-breaker failure protection can be realized. 5 5 H-circuit with disconnector QA 5 QA 5 QA 5 QA 5 QA.9.0 BE BE BE BE BE 5 QA 5 QA 5 QA 5 QA 5 QA. BE BE BE BE BE.. BE BE BE BE BE.4 5 QA 5 QA 5 QA 5 QA 5 QA Fig..8/9 Breaker-and-a-half arrangement.8/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

207 Busbar Protection SIPROTEC 7SS85 Application examples Protection of a double busbar Double-busbar systems allow the distribution of overall output and a flexible operations management. Each busbar or each switchable-busbar section can be selectively protected. Since bays can be connected to various busbars (protection zones), the disconnector positions must be determined in the busbar protection. Fig..8/0 QB 5 QA BE QB QB QB QB QB QA 5 QB BE In the integrated disconnector image, the dynamic updating of the switching state of the system occurs in accordance with the switch positions and the configured topology. For a system in accordance with Fig..8/0, a SIPROTEC 7SS85 device of the significant feature D (differential protection for 4 protection zones, 5 measuring points, 9 bays and disconnector image) is needed. BE BE 5 QA 5 QA 5 QA 5 QA 5 QA 5 QA 5 5 BE BE QA QA BE BE BE BE Double busbar with bus coupler and bus-section disconnection QB QB QB QB QB QB QB QB Systems with transfer busbars or combined busbars Transfer busbars are provided in order to continue to operate feeders in cases of circuit-breaker revision or defect. In this circuit-breaker substitution mode, the circuit breaker in the affected coupler assumes the function of the circuit breaker of the feeder. Mostly a transfer busbar of one s own is available for this operation state. If one of the main busbars, on the basis of the disconnector topology, can also be used as transfer busbar, this is called a combined busbar. For a system in accordance with Fig..8/, a SIPROTEC 7SS85 device of the significant feature B (differential protection for protection zones, 5 measuring points, 9 bays and disconnector image) is needed QB QB QB7 QB QB 5 5 QA QA QB7 QB 5 QA QB7 QB QB BE QB7 QB QB 5 QA QB7.0. QB9 BE BE QB9 BE 5 QA QB9 QB9 BE Fig..8/ Double busbar with combined busbar.6.7 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/9

208 Busbar Protection SIPROTEC 7SS85 Functions, application templates ANSI Functions Abbr. Protection functions for -pole tripping -pole Protection functions for -pole tripping -pole 50BF Circuit-breaker failure protection CBFP 50EF End-fault protection EFP 50/87B Sensitive operate curve 50/74 Current transformer monitoring 6BF Circuit-breaker failure protection without current-threshold check 74TC Trip-circuit supervision TCS 85DT Intertripping scheme 86 Lockout 87 Differential protection ΔI 87B Differential protection, busbar ΔI 87STUB STUB differential protection ΔI Table.8 / Open-circuit detection (differential protection, among others) Operational measured values, standard Switching statistic counters CFC standard CFC arithmetic CFC switching sequence for control applications External trip initiation Control for more than 4 switching devices (circuit breakers) Fault recording of analog and binary signals Monitoring Protection interface, serial (binary data transmission) Number of parameter sets 8 Settings group switching Circuit-breaker test Circuit breaker Disconnector Bay The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 7SS85 functions Available in 7SS /0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

209 Busbar Protection SIPROTEC 7SS85 Standard variants Overview of the standard variants for SIPROTEC 7SS85 V V V /, 5 BI, BO, I Housing / x 9" 5 binary inputs, binary outputs ( life, standard, 0 fast), current transformer Contains the modules: Base module wit PS0 and IO0, expansion module IO0 /, BI, BO, 6 I Housing / x 9" binary inputs, binary outputs ( life, standard, 8 fast), 6 current transformer Contains the modules: Base module with PS0 and IO0, expansion module IO0 / 5 BI, 5 BO, 4 I Housing / x 9" 5 binary inputs 5 binary outputs ( life, standard, fast), 4 current transformer Contains the modules: Base module with PS0 and IO0, expansion modules IO0 The technical data of the devices can be found in the device manual SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.8/

210 Busbar Protection SIPROTEC 7SS / SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

211 Bay Controllers SIPROTEC 6MD85, 6MD86 Answers for infrastructure and cities.

212 Bay Controllers SIPROTEC 6MD85, 6MD86 Description SIPROTEC 6MD85, 6MD86 bay controllers SIPROTEC 5 bay controllers are a part of the modular system of SIPROTEC 5. They support all SIPROTEC 5 system features, and can be used individually as well as universally in the framework of system solutions. SIPROTEC 5 bay controllers control and monitor systems of all voltage levels. The large number of automatic functions allows use in all fields of power supply. The devices also contain important auxiliary functions that are necessary for safe network operation today. This includes functions for protection, control, measurement and monitoring. The large number of communication interfaces and communication protocols satisfies the requirements of communication-based selective protection, as well as automated operation. Commissioning and maintenance work can be completed safely, quickly and thus cost-effectively with high-performance test functions. Because of a modular structure design, the SIPROTEC 5 bay controller can always be flexibly adapted to specific requirements. Overview of the devices 6MD85 and 6MD86 SIPROTEC 5 bay controller is based on the flexible and powerful SIPROTEC 5 modular system. When ordering, you can choose between various standard variants. Expandability by expansion modules allows for individual adjustment to specific applications. Function library and application templates The extensive SIPROTEC function library is also available in the bay controller type 6MD8. Thus, numerous protection functions such as overcurrent protection, overvoltage protection or frequency protection are available. These functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. In this catalog you will find predefined templates for standard applications. These templates already contain basic configurations, required functions and default settings for standard applications. Device groups The bay controller is distinguished by the product groups 6MD85 and 6MD86. 6MD85 devices are tailored to applications in distribution systems but are also suitable for transmission applications. 6MD86 devices are designed for applications in transmission systems and can be operated with a maximum variety of additional functions. The hardware design of both device types can be configured flexibly. Type 6MD85 6MD86 Circuit-breaker failure protection Optional Automatic reclosing Optional CFC switching sequences Optional CFC arithmetic Optional Measured-value processing Optional Number of switching Optional devices greater than 4 Synchrocheck Optional Table.9/ Overview of different distinguishing features Common features: Numerous protection functions configurable Modularly expandable quantity structure Optionally usable as Phasor Measurement Unit Powerful automation with CFC SJ85 7UT8 6MD8 7SL87 7SA84 7KE85 7SA84 7SJ8.0 7SK85 7SA87 7SS8 6MD8 7SA86 7SD84 7SJ8 7SA86 7SJ85. 7KE85 6MD8 7SD87 7SJ86 7KE85 7VK87 7SJ85 7UT8 7SS8 7KE85 7SJ85 7SJ86 7SD86 7SL86 7SJ85 7UT8 7SD84 7SD86 7SK8 7SK85. M. G.4 M.5.6 G.7 Fig..9/ Applications of SIPROTEC 5 devices in a transmission system.9/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

213 Bay Controller SIPROTEC 6MD85 Properties Properties SIPROTEC 6MD85 Brief description Bay controller for medium-voltage and high- to extra-high-voltage switchgear with integrated operation and extensive protection functions. Powerful automation, simple configuration with DIGSI 5. Inputs and outputs 5 predefined standard variants with 4 current transformers and 4 voltage transformers, to 75 binary inputs, 9 to 4 binary outputs or Hardware flexibility flexibly adjusted and expandable I/O quantity structure within the scope of the SIPROTEC 5 modular system. The device can be expanded into the second tier if a large number of inputs and outputs are needed. For example, 40 (and more) binary inputs are possible with the IO0 (see Section Hardware). Housing width / 9" to / 9" Integrated bay controller with versatile protection functions for applications from medium to extra high voltage Control of up to 0 switching devices Synchrocheck and switchgear interlocking system Integrated electrical Ethernet port J for DIGSI IEC 6850 (Reporting) via integrated port J Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Powerful automation with CFC (Continuous Function Chart) Optional overcurrent protection for all voltage levels with -pole tripping Also used in switchgear with breaker-and-a-half scheme Selective protection of overhead lines and cables with single- and multi-ended infeeds for use with protection data communication Overcurrent protection also configurable as backup function Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Measurement of operational values Synchrophasor measured values and IEEE C7.8 protocol integrated (PMU) Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The bay controller 6MD85 is a universal, control and automation device with protection functions on the basis of the SIPROTEC 5 system. It is especially designed for the protection of lines and therefore it is optimally suitable for reserve or emergency protection for the line protection devices. Due to its high flexibility in using of protection data communication it is suitable Fig..9/ Bay controller SIPROTEC 6MD85 (/ device with /6 expansion module and operation panel for key-operated switch) as selective protection equipment for overheadlines and cables with single- and multi-ended infeeds. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.9/ on page.9/5 shows all functions that are available in the SIPROTEC 6MD85. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.9/ on page.9/5 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 6MD85 standard Double-busbar feeder with switchgear interlocking. SIPROTEC 6MD85 extended control Additionally to 6MD85 standard, this includes the CFC blocks for switching sequences and arithmetic Switching sequence for automatic busbar transfer preconfigured (started by function key) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

214 Bay Controller SIPROTEC 6MD85 Application example... QB QB.4.5 QA 5 V4 V-ph FG VI_ph I-ph V-ph FG Circuit breaker QA V-ph V-ph QB9 Line I I I I4 V V V FG (QA) CB (QB) Dco BI BO I-ph V-ph Function group Measuring point Circuit breaker Disconnector Binary input Binary output Operational measured values Energy metered values FG Disconnector QB 5 Ctrl CFC Display, Communication, CFC Ctrl Dco Ctrl CB CFC Switching sequence for busbar transfer Synchrocheck, synchronizing function Control Continuous Function Chart BI BO BI BO Fig 6_Visio_Bsp-Application--us.pdf.5 Fig..9/ Application example: Bay controller SIPROTEC 6MD85 for double busbar with switching sequence for busbar transfer /4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

215 Bay Controller SIPROTEC 6MD85 Functions, application templates ANSI Functions Abbr. 5 Synchrocheck, synchronizing function Sync 50BF Circuit-breaker failure protection CBFP 79 Automatic reclosing AR PMU Synchrophasor measurement PMU Available in 6MD85 Application templates Operational measured values, standard Measured values, extended: Min, Max, Avg 6 x Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Control for 4 switching devices Control for more than 4 switching devices Protection interface 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground I N >, I NP 50HS High speed instantaneous overcurrent protection I>>> 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 8O Overfrequency protection f> 8U Underfrequency protection f< Inrush-current detection Monitoring and supervision 46 Negative-sequence system overcurrent protection I>, I/I> 49 Thermal overload protection θ, I t External trip initiation 74TC Trip-circuit supervision TCS Table.9/ Function points 0 75 The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 6MD85 Functions and application templates 6MD85 standard 6MD85 expanded SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

216 Bay Controller SIPROTEC 6MD86 Properties Properties SIPROTEC 6MD86 Brief description Bay controller for medium-voltage and high- to extra-high-voltage switchgear with integrated operation and extensive protection functions. Powerful automation, simple configuration with DIGSI 5. Inputs and outputs 6 predefined standard variants with up to 8 current transformers and 8 voltage transformers, to 75 binary inputs, 9 to 4 binary outputs or Hardware flexibility flexibly adjusted and expandable I/O quantity structure within the scope of the SIPROTEC 5 modular system. The device can be expanded into the second tier if a large number of inputs and outputs are needed. For example, 40 (and more) binary inputs are possible with the IO0 (see Section Hardware). Housing width / 9" to / 9" Integrated bay controller with versatile protection functions for applications from medium to extra high voltage Control of up to 0 switching devices Synchrocheck, switchgear interlocking system and protection functions related to the switching device, such as circuitbreaker tripping signal and automatic reclosing Integrated electrical Ethernet port J for DIGSI IEC 6850 (Reporting) via integrated port J Up to 4 pluggable communication modules usable for different and redundant protocols (IEC 6850, IEC , IEC , DNP (serial+tcp), Modbus RTU Slave) Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Powerful automation with CFC (Continuous Function Chart) Optional overcurrent protection for all voltage levels with -pole tripping Also used in switchgear with breaker-and-a-half scheme Selective protection of overhead lines and cables with single- and multi-ended infeeds for use with protection data communication Overcurrent protection also configurable as backup function Secure serial protection data communication, also over great distances and all available physical media (fiber-optic cable, -wire connections and communication networks) Measurement of operational values Synchrophasor measured values and IEEE C7.8 protocol integrated (PMU) Powerful fault recording Auxiliary functions for simple tests and commissioning. Applications The bay controller SPROTEC 6MD86 is a universal protection, control and automation device on the basis of the SIPROTEC 5 system. It is especially designed for the protection of lines and therefore it is optimally suitable for reserve or emergency protection for the line protection devices. Due to its high flexibility in using of protection data communication it is suitable Fig..9/4 Bay controller SIPROTEC 6MD86 (/ device with /6 expansion module and operation panel for key-operated switch) as selective protection equipment for overhead lines and cables with single- and multi-ended infeeds. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs. Functions Table.9/ on page.9/8 shows all functions that are available in the 6MD86. Basically, all functions can be configured freely with DIGSI 5. For the application of some of the functions, you require the appropriate number of free function points within the device. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Application templates are available in DIGSI for standard applications. They comprise all basic configurations and default settings. Table.9/ on page.9/8 shows the functional scope and the function point requirement for the application templates described. The following application templates are available: SIPROTEC 6MD86 standard double busbar Double-busbar feeder with switchgear interlocking system Synchrocheck for circuit-breaker Switching sequence for automatic busbar transfer preconfigured (tripped by function key)..9/6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

217 Bay Controller SIPROTEC 6MD86 Application examples SIPROTEC 6MD86 breaker-and-a-half type Control of a breaker-and-a-half diameter ( circuit-breakers, 4 disconnectors) Synchrocheck for the three circuit-breakers with dynamic measuring point changeover. SIPROTEC 6MD86 breaker-and-a-half type Control of a part of breaker-and-a-half diameter Supports concepts with several bay controllers per bay Circuit-breaker failure protection and automatic reclosing QB QB QA QB9 Line V4 I I I I4 V V V FG (QA) CB (QB) Dco BI BO V-ph I-ph V-ph Function group Measuring point Circuit breaker Disconnector Binary input Binary output FG VI_ph I-ph V-ph 59 8 Operational measured values Energy metered values FG Disconnector QB 5 50BF Display, Communication, CFC Ctrl Dco FG Circuit breaker QA V-ph V-ph I-ph 5 50BF 79 Ctrl CB CFC Switching sequence for busbar transfer Synchrocheck, synchronizing function Circuit-breaker failure protection Overvoltage protection Automatic reclosing Frequency protection Power protection BI BO BI BO Fig_5_7_Visio-Bsp-Application--us.pdf Ctrl Control CFC Continuous Function Chart.6 Fig..9/5 Application example: Bay controller 6MD86 for double busbar with protection functions SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/7

218 Bay Controller SIPROTEC 6MD86 Functions, application templates ANSI Functions Abbr. Application templates 5 Synchrocheck, synchronizing function Sync 50BF Circuit-breaker failure protection CBFP 79 Automatic reclosing AR PMU Synchrophasor measurement PMU Operational measured values, standard Measured values, extended: Min, Max, Avg Switching-statistic counters CFC standard CFC arithmetic CFC switching sequences Control for 4 switching devices Control for more than 4 switching devices Protection interface 50/5 Overcurrent protection, phases I>, I P > 50N/5N Overcurrent protection, ground I N >, I NP 50HS High speed instantaneous overcurrent protection I>>> 59 Overvoltage protection, -phase V> 59 Overvoltage protection, positive-sequence system V> 59N Overvoltage protection, zero-sequence system V0> 7 Undervoltage protection, -phase V< 7 Undervoltage protection, positive-sequence system V< 8O Overfrequency protection f> 8U Underfrequency protection f< Inrush-current detection Monitoring and supervision 46 Negative-sequence system overcurrent protection I>, I/I> 49 Thermal overload protection θ, I t External trip initiation 74TC Trip-circuit supervision TCS Table.9/ Function points The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator under: SIPROTEC 6MD86 Functions and application templates Available in 6MD86 6MD86 standard double busbar 6MD86 breakerand-a half type 6MD86 breakerand-a half type /8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

219 Bay Controller SIPROTEC 6MD85 Application examples Application example with switching sequence SIPROTEC 6MD85 Fig..9/6 shows a simple application example with a 6MD85 on a double busbar. The circuit-breaker function group contains the synchrocheck. The disconnectors are also controlled by one function group each. Operational measured values and QB Fig..9/6 QA QB9 5 Line QB V4 I I I I4 V V V FG (QA) CB (QB) Dco BI BO V-ph I-ph V-ph Function group Measuring point Circuit breaker Disconnector Binary input Binary output FG VI_ph I-ph V-ph energy measured values are calculated in the function group VI_-phase, and are available for output on the display, transmission to the station automation system and processing in the CFC. A switching sequence stored in the CFC which is triggered via a function key causes an automatic busbar transfer. Operational measured values Energy metered values 5 Ctrl CFC Display, Communication, CFC FG Disconnector QB FG Circuit breaker QA V-ph V-ph Synchrocheck, synchronizing function Control Continuous Function Chart Application example: Bay controller 6MD85 for double busbar with switching sequence for busbar transfer Ctrl Dco 5 Ctrl CB CFC Switching sequence for busbar transfer BI BO BI BO Fig 6_Visio_Bsp-Application--us.pdf SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

220 Bay Controller SIPROTEC 6MD86 Application examples Application example with protection functions In Fig..9/8, the double-busbar feeder is controlled by a SIPROTEC 6MD85 and additionally protected. For this purpose, the circuit-breaker failure protection and automatic reclosing are activated in the circuit-breaker function group. Function group VI_-phase contains the protection functions overvoltage protection, frequency protection and power protection. Different to Fig..9/6 it is therefore connected to the circuit-breaker in order to provide a destination for the resulting tripping signals. Such connections can be configured easily and flexibly in the DIGSI editor Function group connections (Fig..9/7). Fig..9/7 Assignment of the function group with protection functions to the circuit-breaker (protection object) QB QB... QA 5 V4 V-ph FG VI_ph I-ph V-ph 59 FG Circuit breaker QA V-ph V-ph QB9 Line I I I I4 V V V I-ph V-ph 8 Operational measured values Energy metered values Display, Communication, CFC FG Disconnector QB Ctrl Dco I-ph 50BF 79 Ctrl CB CFC Switching sequence for busbar transfer BI BO BI BO Fig_5_7_Visio-Bsp-Application--us.pdf FG (QA) CB (QB) Dco BI BO Function group Measuring point Circuit breaker Disconnector Binary input Binary output 5 50BF Synchrocheck, synchronizing function Circuit-breaker failure protection Overvoltage protection Automatic reclosing Frequency protection Power protection.9.0 Ctrl CFC Control Continuous Function Chart Fig..9/8 Application example: Bay controller 6MD86 for double busbar with protection functions.9/0 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

221 Bay Controller SIPROTEC 6MD86 Application examples QB QC Busbar A BE5 Backup protection.. A B QA QB BE QB QA BE 5 5 QC QC QB9 QC QC Line QC9 BE5 I V I V 7SL87 Protection device Distance/differential protection, circuit-breaker failure protection and automatic reclosing for QA and QA 6MD86 Bay controller Synchrocheck and Control for all Circuit breaker, Control for all Switches, measurements QB QB9 Line QC9 BE5 Backup protection..4 C BE QB QA 5 QC QC QC I V V 7SL87 Protection device Distance/differential protection, circuit-breaker failure protection and automatic reclosing for QA and QA Fig_9_Visio--5_CB-us.pdf.5 Fig..9/9 QB Busbar B Breaker-and-a-half diameter with protection and control systems Fig..9/9 shows a breaker-and-a-half diameter with protection and control system. Protection is ensured by two line protection devices SIPROTEC 7SL87 which also include circuit-breaker failure protection and automatic reclosing of the three circuit- BE5 BE QA QB QC Instrument transformer Circuit breaker Disconnector Grounding switch Application example: Breaker-and-a-half layout with one bay controller and two line protection devices (overview) breakers. All switching devices and the synchrocheck of the circuit-breakers are controlled by the bay controller SIPROTEC 6MD86. Fig..9/0 shows the functions of SIPROTEC 6MD SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

222 Bay Controller SIPROTEC 6MD86 Application examples QA V4 I I I V V V V-ph I-ph V-ph Vsync Vsync Ctrl CB BI BO.9 QA Vsync....4 QA I I I V V V I-ph V-ph Vsync Ctrl CB BI BO.5 I4 I4 V4 I-ph I-ph V-ph Vsync Vsync Ctrl CB Ctrl Dco BI BO BI BO Fig_0_Visio-Bsp-Application--us.pdf.6.7 Fig..9/0 Application example: Breaker-and-a-half layout with one bay controller and two line protection devices (detail for bay controller) Breaker-and-a-half diameter with protection and control Fig..9/0 shows the principle of dynamic changeover of measured voltage values for the synchrocheck functions of the three circuit-breakers in the bay controller SIPROTEC 6MD86. Every synchrocheck function (ANSI number 5) requires the two voltages Vsync and Vsync (feeder voltage and reference voltage). For the central circuit-breaker QA there are two possibilities each for both voltages, depending on the position of the disconnectors and the circuit-breakers. For the two exterior circuit-breakers QA and QA, there is only one possibility for one voltage (that is, the adjacent busbar), whereas the other voltage is connected with one of three possibilities (also depending on the position of the switching device)..9/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

223 Bay Controller SIPROTEC 6MD86 Application examples Fig..9/ Mapping of the possible voltage channels to the three circuit-breaker function groups Fig..9/ shows the mapping in the editor Function Group Connections. All voltages that are possible as feeder or reference voltage for the synchrocheck are assigned to the inputs Vsync or Vsync. The ID number of the measured values is used to select the presently applied operational voltages in a CFC (Fig..9/) Fig..9/ CFC for selection of the synchrocheck reference voltages SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/

224 Bay Controllers SIPROTEC 6MD85, 6MD86 Application examples Application as Phasor Measurement Unit Since the release of the bay controller SIPROTEC 6MD85 and SIPROTEC 6MD86, the function Phasor Measurement Unit (PMU) is made available in the SIPROTEC devices for the first time. Fig..9/ shows the principle. A measurement of current and voltage with regard to amplitude and phase is performed with PMUs on selected substations of the transmission system. Due to the high-precision time stamps assigned to these phasor quantities by the PMU, these measured values can be displayed together at a central analysis point. This provides a good overview of the condition of the system stability, and enables the display of dynamic processes, e.g., power swings. V α Station Station 4 V α Station.8.9 Station V....4 Fig..9/ Principle of distributed phasor measurement α Region Region.5 PDC PDC IEEE C Fig..9/4 Connection of Phasor Measurement Units with two Phasor Data Concentrators (PDCs) SIGUARD PDP If the option Phasor Measurement Unit is selected, the devices determine current and voltage phasors, mark them with high-precision time stamps, and send them to a phasor data concentrator together with other measured values (frequency, rate of frequency change) via the communication protocol IEEE C7.8, see Fig..9/4. By means of the synchrophasors and a suitable analysis program (e.g., SIGUARD PDP) it is possible to determine power swings automatically and to trigger alarms, which are sent, for example, to the network control center..9/4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

225 Bay Controllers SIPROTEC 6MD85, 6MD86 Application examples QB QB... 5 QA QB9 Line V4 I I I I4 V V V V-ph I-ph V-ph FG VI_ph V-ph I-ph Operational measured values Energy metered values FG PMU V-ph V-ph I-ph Phasor calculation for V and I Display, Communication, CFC FG Circuit breaker QA V-ph V-ph I-ph Comm. IEEE C7.8 5 Ctrl CB FG Disconnector QB Ctrl Dco BI BO BI BO FG (QA) CB (QB) Dco BI BO Function group Measuring point Circuit breaker Disconnector Binary input Binary output 5 Ctrl CFC PMU Synchrocheck, synchronizing function Control Continuous Function Chart Phasor Measurement Unit.4 Fig..9/5 Application example: Double busbar with 6MD86, used as bay controller and Phasor Measurement Unit (PMU).5 When the PMU function is used, a PMU function is created in the device, see Fig..9/5. This function group calculates the phasors and analog values, sets the time stamps and sends the data to the selected Ethernet interface with the protocol IEEE C7.8. There they can be received, stored and processed by one or more clients. Up to three client IP addresses can be allocated in the device SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.9/5

226 Bay Controllers SIPROTEC 6MD85, 6MD86 Standard variants Standard variants for SIPROTEC 6MD85 and SIPROTEC 6MD86 Type Type Type Type 4 Type 5 Type 6 Type 7 /, BI, 9 BO, 4 I, 4 V Housing width / x 9 electrical Ethernet module ETH-L-EL binary inputs, 9 binary outputs ( lifecontact, standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0. /, 7 BI, 7 BO, 4 I, 4 V Housing width / x 9", electrical Ethernet module ETH-L-EL 7 binary inputs, 7 binary outputs ( lifecontact, 0 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion module IO07. In preparation /, 4 BI, 5 BO, 4 I, 4 V Housing width / x 9", electrical Ethernet module ETH-L-EL 4 binary inputs, 5 binary outputs ( lifecontact, 8 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules x IO07. In preparation 5/6, 59 BI, BO, 4 I, 4 V Housing width 5/6 x 9", electrical Ethernet module ETH-L-EL 59 binary inputs, binary outputs ( lifecontact, 6 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules x IO07. /, 75 BI, 4 BO, 4 I, 4 V Housing width / x 9", electrical Ethernet module ETH-L-EL 75 binary inputs, 4 binary outputs ( lifecontact, 4 standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules 4x IO07. The images show the 6MD86 operation panel: Large display, key switch, LEDs. 6MD85 standard variants: Small display, max. 6 LEDs. Standard variant additionally for SIPROTEC 6MD86 Type 8 /, 75 BI, 9 BO, 8 I, 8 V Housing width / x 9", electrical Ethernet module ETH-L-EL 67 binary inputs, 9 binary outputs ( lifecontact, 6 standard, fast), 8 current transformer inputs, 8 voltage transformer inputs Contains the modules: Base module with PS0 and IO0, expansion modules IO0, x IO07. The technical data for the bay control devices can be found in the device manuals. SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

227 Digital Fault Recorder SIPROTEC 7KE85 Answers for infrastructure and cities.

228 Digital Fault Recorder SIPROTEC 7KE85 Description Digital fault recorder SIPROTEC 7KE85 Digital fault recorders are part of the modular system of SIPROTEC 5. They support all SIPROTEC 5 system features and can be used individually as well as universally in the framework of system solutions. The SIPROTEC 7KE85 fault recorder is designed to suit present and future requirements in a changing energy sector. Powerful and reliable monitoring combined with flexible engineering and communication features provide the basis for maximum supply reliability. Commissioning and maintenance work can be completed safely, quickly and thus cost-effectively with high-performance test functions. Due to a modular design, the SIPROTEC 5 fault recorder can always be flexibly adapted to specific requirements. The digital fault recorder SIPROTEC 7KE85 has the following additional functionality compared to SIPROTEC 5 protection devices and bay controllers: Sampling configurable from to 6 khz 6-gigabyte ring buffer All recorders can run simultaneously Recorders triggered individually Continuous recorders Separate activation of the recorders Freely configurable storage allocation Additional quality information complements the records. Features The digital fault recorder SIPROTEC 5 7KE85 can be configured with different basic features. Basic features Digital fault recording PMU Power Quality Recorder Table.0/ Comprehensive flexible event-triggered and continuous recording options Synchrophasor measurement (PMU) according to C7.8 (0) Continuous measurement of events and disturbances in electricity supply systems according to IEC 6000 (class S) Overview of different basic features Function library and application templates A common function library provides all protection, automation, monitoring and additional functions for the SIPROTEC 5 devices. These functions are truly the same for all devices. Once established, configurations can be transferred from device to device. This results in substantially reduced engineering effort. The table on page.0/4 lists the available functions from the library. Predefined templates are available in DIGSI for the standard applications. These templates already contain basic configurations, required functions and default settings SJ85 7UT8 7SK85 7KE85 6MD8 6MD8 7SA87 7SD87 7SJ86 7SL87 7SS8 7KE85 7VK87 7SJ85 7UT8 6MD8 7SS8 7KE85 7SA84 7SA86 7SJ85 7SJ86 7SD84 7SD86 7SL86 7SJ8 7SJ85 7UT8 7KE85 7SA84 7SA86 7SD84 7SD86 7SJ8 7SJ85 7SK8 7SK85.0 M. G. M..4 G.5.6 Fig..0/ Application of SIPROTEC 5 devices.7.0/ SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

229 Digital Fault Recorder SIPROTEC 7KE85 Properties Properties SIPROTEC 7KE85 Brief description Powerful digital fault recorder with integrated detection of synchrophasors (PMU) according to IEEE C7.8 and power quality measurement* according to IEC 6000 (class S). Due to the high flexibility of trigger functions, the 7KE85 is ideally suited to monitor the entire energy value chain from generation to distribution. The powerful automation and flexible configuration with DIGSI 5 complements the range of functions. Inputs and outputs Predefined standard variants ** with up to 6 current and 6 voltage transformers, 5 binary inputs, 7 binary outputs or Hardware flexibility flexibly adjusted and expandable I/O quantity structure within the scope of the SIPROTEC 5 modular system Housing width / 9" to / x 9" Digital fault recorder for medium-voltage systems, highvoltage systems and extra-high voltage systems and power plants Fast scan recorder Up to slow scan recorders Up to 5 continuous recorders Power quality recorder* according to IEC 6000 (class S) Sequence of event recorder for continuous recording of binary status changes Applicable as Phasor Measurement Unit (PMU) according to IEEE C7.8 standard Transmission of records and triggering via IEC 6850 Variable sampling frequencies parameterizable from khz to 6 khz The user can allocate the 6-gigabyte internal ring buffer to the various recorders. Intelligent monitoring routines of the storage medium ensure a high security of the archived data. Loss-free data compression Time synchronization via IRIG-B, DCF77 and SNTP Free routing of measured values to the individual recorders Free combination of the measuring groups for power calculation Quality bits for representing the current channel quality The trigger functions of a function block are the value of the fundamental component, RMS value, zero-sequence/positivesequence/negative-sequence system, frequency, active power/ reactive power / apparent power Level trigger and gradient trigger for each trigger function Flexible cross and network trigger Creating trigger functions using the graphic automation editor CFC (Continuous Function Chart) Trigger functions by combining single-point/double-point indications, analog values, binary signals, Boolean signals and GOOSE messages Consistent monitoring concept Auxiliary functions for simple tests and commissioning * in preparation ** extensions in preparation Fig..0/ Digital fault recorder 7KE85 (/ device with /6 expansion module and LED operation panel) Integrated electrical Ethernet port J for DIGSI IEC 6850 (Reporting) via integrated port J Ethernet redundancy protocols PRP and HSR Cyber Security in accordance with NERC CIP and BDEW whitepaper Special test mode for commissioning Up to 4 pluggable communication modules can be used for different and redundant protocols. Intelligent terminal technology enables pre-wiring and easy device exchange. Applications Digital fault recording for medium-voltage to extra-high voltage systems with comprehensive trigger and recording functions The SIPROTEC 7KE85 fault recorder provides a clearly structured and event-related evaluation and documentation of your power system processes. It enables you to analyze disturbances and to optimize your power system. The following processes usually have to be monitored and documented: Power system incidents such as critical load cases or shortcircuits Disturbances of the supply quality Dynamic behavior of generators Starting and switch-off processes of transformers (saturation behavior) Power quality* according to EN 5060 such as harmonics, voltage dips, voltage peaks or flickers Power fluctuations and power swing processes Test runs during commissioning. The device supports all SIPROTEC 5 system characteristics. It enables future-oriented system solutions with high investment security and low operating costs SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.0/

230 Digital Fault Recorder SIPROTEC 7KE85 Functions and application templates Functions Table.0/ shows all functions which are available in SIPROTEC 7KE85. All functions can be freely configured with DIGSI 5 as a matter of principle. You need the appropriate number of free function points within the device for some of the functions. The function point calculator in the online configurator provides support in determining the required number of function points for your device. Application templates Templates are available in DIGSI for the standard applications. They comprise basic configurations and default settings. Table.0/ shows the functional scope for the described application templates. The following application templates are available: Digital fault recorder 4 V/4 I/BI Application template referring to the monitoring of a total of 8 current or voltage transformers. Digital fault recoder 8 V/8 I/9 BI Application template referring to the monitoring of a total of 6 current or voltage transformers /4 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition Application templates ANSI Functions Abbr. FL Hardware quantity structure expandable I/O Available in 7KE85 Digital fault recorder 4V/4I/BI PMU Synchrophasor measurement PMU Operational measured values, standard Measured values, extended: Min, Max, Avg CFC standard CFC arithmetic Monitoring and supervision FSR Fast-scan recorder FSR ) ) SSR Slow-scan recorder SSR ) ) CR Continuous recorder CR PQR Power quality recorder (class)* PQR SOER Sequence-of-events recorder* SOER ExTrFct Extended trigger functions ExTrFct IRIG-B DCF77 SNTP (Simple network time protocol) Function-points class: 0 0 The configuration and function points for your application can be ascertained in the SIPROTEC 5 order configurator: Table.0/ * in preparation ) Maximum additional slow-scan recorder possible ) Maximum 4 additional continuous recorders possible SIPROTEC 7KE85 Functions and application templates Digital fault recorder 8V/8I/9BI

231 Digital Fault Recorder SIPROTEC 7KE85 Functions and application templates Fast scan recorder The fast scan recorder allows analyzing transient processes, short-circuits or ground faults and also the behavior of protection devices. Transient processes, for example can be caused by switching operations. The fast scan recorder is capable of recording the development of the sampled values of all analog inputs, of internally calculated measured values and binary signals during a fault for a period of 90 seconds with a pre-trigger time of seconds. The sampling rate can be set between 0 and 0 sampled values per period. This corresponds to a sampling frequency of khz to up to 6 khz. Binary changes are detected with a resolution of ms. The input signals are analyzed according to the specified trigger conditions and recorded if the limit values are violated. This fault record contains the pre-trigger time, the trigger instant and the fault recording. Additionally, the trigger cause is stored. The trigger limit values and recording times can be determined easily using DIGSI 5. Slow scan recorder The functioning is similar to the fast scan recorder. However, the difference is that the values are calculated every 0 ms and are averaged over a configurable interval. The averaging interval can be configured from to up to 000 rated periods. The slow scan recorder stores the averaged values as recording in the mass storage. Analogous to the fast scan recorder, binary changes are detected with a resolution of ms. Slow scan recorders are therefore ideally suited to detect, for example, the load conditions before, during and after a disturbance and along with that the power swing processes. The slow scan recorder is capable of recording the development of the sampled values of all analog inputs, of internally calculated measured values and binary signals during a fault for a period of 90 minutes with a pre-trigger time of 90 seconds. Here, too, the input signals are analyzed according to the specified trigger conditions and recorded if the limit values are violated. These recorded fault records contain the pre-trigger time, the trigger instant and the fault recording. Additionally, the trigger cause is stored. For this purpose, the user specifies trigger limit values and recording times in DIGSI 5. Additionally, it is possible to create up to independent instances of the slow scan recorder. Continuous recorder The 7KE85 features up to 5 continuous recorders used for data acquisition of the analog quantities and internally calculated measured values over longer periods of time. This enables performing an accurate long-term analysis of the power system behavior. Table.0/ Recorder Common Data Class (IEC 6850) Pre-trigger time (max.) An average is formed and stored in the storage for each quantity recorded by the continuous recorder over a settable period of time. Each continuous recorder can be activated separately and is organized as ring buffer with parameterizable quantities. Trigger functions The event-triggered recorders (fast scan recorder and slow scan recorder) contain a variety of analog and binary triggers which enable the user to determine the specific power system problem and avoid unnecessary recordings. The input signals are sampled according to the trigger conditions and start the fault recording. In the SIPROTEC 7KE85 all triggers can also be assigned multiple times to the different recorders. Analog triggers The analog triggers can basically be divided into level triggers and gradient triggers. Level triggers monitor whether measured values stay inside the parameterized limit values (min/max). The trigger is initiated once the measured value violates the corresponding limit value. Gradient triggers respond to the level change per time. Each analog trigger can be parameterized as primary, secondary or percentage value. There are frequency triggers, voltage triggers, current triggers, and power triggers. If the trigger quantity is current and voltage, the fundamental component, RMS and symmetrical components are available for selection. Binary triggers A binary trigger starts a recording due to the logical status change of a binary signal. Besides manual triggers initiated via the device keypad, DIGSI 5 or any IEC 6850 client (for example SICAM PAS/PQS), triggering is also possible via binary input (external trigger) or IEC 6850 GOOSE messages via communication network. The logical triggers are implemented via the powerful graphical logic editor (CFC). All available analog values (absolute values or phases), binary signals, boolean signals, GOOSE messages, single-point indications and double-point indications can be freely combined here using boolean or arithmetic operations. You as the user can thus define the trigger conditions suitable for your problem and start recording. Seal-in time (max.) Sampling/ resolution Averaging time Fast scan recorder SMV/MV s 90 s khz to 6 khz SPS s 90 s ms Slow scan recorder MV 90 s 5400 s MVs all 0 ms periods SPS 90 s 5400 s ms Continuous recorder MV MVs all 0 ms s to 900 s SMV = Sample Measured Values / SPS= Single Point Status / MV = Measured Values SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition /5

232 Digital Fault Recorder SIPROTEC 7KE85 Application examples Fault recorder for feeder monitoring Fig..0/ and Fig..0/4 show simple application examples with one SIPROTEC 7KE85 connected to monitor feeders. The different triggers are provided via the function group FG UI_phases and are available to the function group FG Recorder and thus also to the event-triggered recorders. At the same time, CFC enables user-defined trigger functions (combination of GOOSE messages, single-point/double-point indications, binary signals...) to start a recorder and thereby generate a fault record QB QB.. QA 5 V-ph FG VI_-ph V-ph Current trigger FG Recorder Fast-scan recorder.4 QB9 I-ph I-ph Voltage trigger Power trigger Slow-scan recorder Continuous recorder.5 Line Frequency trigger Trigger functions Power quality recorder * Sequence-of-events recorder * Recording Visio-Bsp-Application-_us.pdf.6.7 FG QA/ CB QB/ Dco CFC Function group Measuring point Circuit breaker Disconnector Continuous Function Chart Information routing Trigger routing *in preparation Fig..0/ Application example: Digital fault recorder SIPROTEC 7KE85 for feeder monitoring.0/6 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

233 Digital Fault Recorder SIPROTEC 7KE85 Application examples Busbar with line feeders.. 5 QA QB9 5 QA QB9 V-ph I-ph FG VI_-ph V-ph Current trigger Voltage trigger I-ph Power trigger FG Recorder Fast-scan recorder Slow-scan recorder Continuous recorder Frequency trigger Power quality recorder * Sequence-of-events recorder *.8.9 Line Line I-ph FG VI_-ph V-ph I-ph Current trigger Voltage trigger Power trigger Frequency trigger Recording Visio-Bsp-Application-_us.pdf....4 FG QA/ CB QB/ Dco CFC Function group Measuring point Circuit breaker Disconnector Continuous Function Chart Information routing Trigger routing *in preparation.5 Fig..0/4 Application example: Digital fault recorder SIPROTEC 7KE85 for monitoring of two feeders SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition.0/7

234 Digital Fault Recorder SIPROTEC 7KE85 Application examples Phasor Measurement Unit The Phasor Measurement Unit (PMU) function can be operated simultaneously in the SIPROTEC 7KE85 digital fault recorder. Fig..0/5 shows the principle. PMUs measure current and voltage by amount and phase at selected stations of the transmission system. The high-precision time synchronization (via GPS) allows comparing measured values from different substations far apart and drawing conclusions as to the system state and dynamic events such as power swing conditions. V α Station When selecting the option Phasor Measurement Unit, the devices determine current and voltage phasors, provide them with highly accurate time stamps and transmit them for analysis together with other measured values (frequency, speed of frequency change) using the IEEE C7.8 communication protocol, see Fig..0/6. Using synchrophasors and a suitable analysis program (for example SIGUARD PDP) it is possible to automatically detect power swings and trigger alarms, which are sent to the control center, for example Station 4 V α Station Station V.5 α Fig..0/5 Principle of distributed phasor measurement.6 Region Region PDC PDC IEEE C7.8 Fig..0/6 Connection of Phasor Mesurement Units with two Phasor Data Concentrators (PDCs) SIGUARD PDP.0/8 SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

235 Digital Fault Recorder SIPROTEC 7KE85 Application examples Fault recorder with PMU When using the PMU function, a function group FG PMU is created in the device, see Fig..0/7. This function group calculates the phasors and analog values, conducts the time stamping and sends the data to the selected Ethernet interface using the IEEE C7.8 protocol. There, the data can be received, stored and processed by one or more clients. Up to three client IP addresses can be assigned in the device QB QB 7KE85.9 QA 5 V-ph FG VI_-ph V-ph Current trigger FG Recorder Fast-scan recorder.. QB9 I-ph I-ph Voltage trigger Power trigger Frequency trigger Slow-scan recorder - Continuous recorder -5 Power quality recorder * Sequence-of-events recorder *..4 Fig..0/7 Line FG QA/ CB QB/ Dco CFC PMU FG PMU V-ph I-ph Phasor calculation for V and I Function group Measuring point Circuit breaker Disconnector Continuous Function Chart Phasor Measurement Unit Comm. IEEE C7.8 Information routing Trigger routing Recording *in preparation Application example: Double busbar with SIPROTEC 7KE85 used as fault recorder and Phasor Measurement Unit (PMU) SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition Visio-Bsp-PMU-Application--us.pdf /9

236 Digital Fault Recorder SIPROTEC 7KE85 Standard variants Standard variants for SIPROTEC 7KE85 N N /, BI, 9 BO, 4 I, 4 V Housing width / x 9" binary inputs, 9 binary outputs( life contact, standard, 6 fast), 4 current transformer inputs, 4 voltage transformer inputs Contains the modules: Base module with PS0 and IO0 /, BI, BO, 8 V Housing width / x 9" binary inputs, binary outputs ( life contact, standard), 8 voltage transformer inputs Contains the modules: Base modules with PS0 and IO N* /, 7 BI, 7 BO, 8 I, Housing width / x 9" 7 binary inputs, 7 binary outputs ( life contact, standard, 4 fast), 8 current transformer inputs Contains the modules: Base module with PS0 and IO0 N5 /, 9 BI, 5 BO, 8 I, 8 V Housing width / x 9" 9 binary inputs, 5 binary outputs ( life contact, standard, fast), 8 current transformer inputs, 8 voltage transformer inputs Contains the modules: Base module with PS0 and IO0 expansion module IO0 The technical data can be found in the manual * in preparation SIPROTEC 5 Devices Protection, Automation and Monitoring Siemens SIPROTEC 5.0 Edition

237 SIPROTEC 5 Appendix Answers for infrastructure and cities.