MU Agile AMU. Technical Manual. Analogue Merging Unit

Transcription

1 MU Agile AMU Technical Manual Analogue Merging Unit Platform Hardware Version: A Platform Software Version: 10 Publication Reference: MU Agile AMU-TM-EN-1 ALSTOM All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

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3 Contents Chapter 1 Introduction 1 1 Chapter Overview 3 2 Foreword Target Audience Typographical Conventions Nomenclature Manual Structure Product Scope 5 3 Features and Functions Control Functions Measurement Functions Communication Functions 6 4 Compliance 7 5 Functional Overview 8 6 Ordering Options 9 Chapter 2 Safety Information 11 1 Chapter Overview 13 2 Health and Safety 14 3 Symbols 15 4 Installation, Commissioning and Servicing Lifting Hazards Electrical Hazards UL/CSA/CUL Requirements Fusing Requirements Equipment Connections Protection Class 1 Equipment Requirements Pre-energization Checklist Peripheral Circuitry Upgrading/Servicing 20 5 Decommissioning and Disposal 21 Chapter 3 Hardware Design 23 1 Chapter Overview 25 2 Hardware Architecture Memory and Real Time Clock 26 3 Mechanical Implementation Housing TE Rear Panel 28 4 Terminal Connections Hardware Configuration 29 5 Front Panel TE Front Panel USB Port Fixed Function LEDs 31 Chapter 4 Configuration 33 1 Chapter Overview 35 2 MU Agile Configurator IEC Substation Configuration Languages 36

4 Contents MU Agile AMU 2.2 IEC Substation Configuration Files Opening An ICD Template File Template Installed for Required IED Type Template Not Installed for Required IED Type Opening an Existing AMU Configuration File 37 3 Configuring a MiCOM IED IED Details Ethernet Communications Setup Sampled Values SNTP Synchronisation PPS Synchronisation Acquisition CT and VT Configuration Simulation Cybersecurity Extracting an IED's Configuration Validating and Sending an IED's Configuration Manage Schemas 44 Chapter 5 Monitoring and Control 45 1 Chapter Overview 47 2 Records Event Records 48 3 Event Types Alarm Events Maintenance Events Security Events Platform Events 49 4 Measurements Measured Quantities 50 Chapter 6 Communications 51 1 Chapter Overview 53 2 Communication Interfaces Universal Serial Bus 54 3 IEC Introduction to IEC LE Analogue Merging Unit Concepts Sampled Value Distribution Time Synchronisation 56 Chapter 7 Installation 59 1 Chapter Overview 61 2 Handling the Goods Receipt of the Goods Unpacking the Goods Storing the Goods Dismantling the Goods 62 3 Location 63 4 Mounting the Device Flush Panel Mounting Rack Mounting Wall Mounting Software Only 66 ii MU Agile AMU-TM-EN-1

5 MU Agile AMU Contents 5 Cables and Connectors Terminal Blocks Power Supply Connections Earth Connnection Current Transformers Voltage Transformer Connections Watchdog Connections PPS Connection Ethernet Fibre Connections USB Connection 69 6 Case Dimensions 70 Chapter 8 Commissioning Instructions 71 1 Chapter Overview 73 2 General Guidelines 74 3 Commissioning Equipment Minimum Equipment Required Optional Equipment Required 75 4 Product Checks Product Checks with the IED De-energised Visual Inspection Insulation External Wiring Watchdog Contacts Power Supply Product Checks with the IED Energised Watchdog Contacts Test LEDs Check Sampled Value Pulblishing Test Current Inputs Test Voltage Inputs Compatibility with IEDs from Different Manufacturers 82 5 Onload Checks Confirm Current Connections Confirm Voltage Connections 83 6 Final Checks 84 Chapter 9 Maintenance and Troubleshooting 85 1 Chapter Overview 87 2 Maintenance Maintenance Checks Alarms Measurement Accuracy Replacing the Unit Cleaning 89 3 Troubleshooting Self-Diagnostic Software Power-up Errors Fixed Function LEDs Displaying Error Codes Mal-operation during testing Incorrect Analogue Signals Repair and Modification Procedure 92 Chapter 10 Technical Specifications 95 MU Agile AMU-TM-EN-1 iii

6 Contents MU Agile AMU 1 Chapter Overview 97 2 Interfaces Front USB Port IEC LE Port Base FX Receiver Characteristics Base FX Transmitter Characteristics PPS Port 99 3 Measurements and Recording General Event Records IEC LE Sampled Values Standards Compliance EMC Compliance: 2004/108/EC Product Safety: 2006/95/EC R&TTE Compliance UL/CUL Compliance Mechanical Specifications Physical Parameters Enclosure Protection Mechanical Robustness Transit Packaging Performance Ratings AC Measuring Inputs Current Transformer Inputs Voltage Transformer Inputs Power Supply Auxiliary Power Supply Voltage Nominal Burden Power Supply Interruption Power Requirements Input / Output Connections Watchdog Contacts Environmental Conditions Ambient Temperature Range Temperature Endurance Test Ambient Humidity Range Corrosive Environments Type Tests Insulation Creepage Distances and Clearances High Voltage (Dielectric) Withstand Impulse Voltage Withstand Test Electromagnetic Compatibility MHz Burst High Frequency Disturbance Test Damped Oscillatory Test Immunity to Electrostatic Discharge Electrical Fast Transient or Burst Requirements Surge Withstand Capability Surge Immunity Test Immunity to Radiated Electromagnetic Energy Radiated Immunity from Digital Communications Radiated Immunity from Digital Radio Telephones Immunity to Conducted Disturbances Induced by Radio Frequency Fields Magnetic Field Immunity Conducted Emissions Radiated Emissions 110 iv MU Agile AMU-TM-EN-1

7 MU Agile AMU Contents Appendix A Commissioning Record Test Record Engineer Details Front Plate Information Test Equipment Tests with Product De-energised Tests with Product Energised Communication Tests Current Input Tests Voltage Input Tests Overcurrent Checks On-load Checks Final Checks 115 Appendix B Wiring Diagrams Appendix Overview External Connections for Measured V External Connections for Derived V0 121 MU Agile AMU-TM-EN-1 v

8 Contents MU Agile AMU vi MU Agile AMU-TM-EN-1

9 Table of Figures Figure 1: Functional Overview 8 Figure 2: Hardware design overview 26 Figure 3: Exploded view of device 27 Figure 4: Rear panel 28 Figure 5: MU Agile AMU I/O 29 Figure 6: Front panel 30 Figure 7: Decoupling primary and secondary plant with merging units 55 Figure 8: Location of Merging Units in the substation 56 Figure 9: Rack mounting of products 65 Figure 10: MiDOS terminal block 67 Figure 11: 30TE case dimensions 70 Figure 12: LED sequence displaying error codes 91 Figure 13: MU Agile AMU external connection diagram for measured V0 120 Figure 14: MU Agile AMU external connection diagram for derived V0 121

10 Table of Figures MU Agile AMU viii MU Agile AMU-TM-EN-1

11 INTRODUCTION CHAPTER 1

12 Chapter 1 - Introduction MU Agile AMU 2 MU Agile AMU-TM-EN-1

13 MU Agile AMU Chapter 1 - Introduction 1 CHAPTER OVERVIEW This chapter contains the following sections: Chapter Overview 3 Foreword 4 Features and Functions 6 Compliance 7 Functional Overview 8 Ordering Options 9 MU Agile AMU-TM-EN-1 3

14 Chapter 1 - Introduction MU Agile AMU 2 FOREWORD This technical manual provides a functional and technical description of Alstom Grid's MU Agile AMU, as well as a comprehensive set of instructions for using the device. We have attempted to make this manual as accurate, comprehensive and user-friendly as possible. However we cannot guarantee that it is free from errors. Nor can we state that it cannot be improved. We would therefore be very pleased to hear from you if you discover any errors, or have any suggestions for improvement. All feedback should be sent to our contact centre via the following URL: TARGET AUDIENCE This manual is aimed towards all professionals charged with installing, commissioning, maintaining, troubleshooting, or operating any of the products within the specified product range. This includes installation and commissioning personnel as well as engineers who will be responsible for operating the product. The level at which this manual is written assumes that installation and commissioning engineers have knowledge of handling electronic equipment. Also, system and protection engineers have a thorough knowledge of protection systems and associated equipment. 2.2 TYPOGRAPHICAL CONVENTIONS The following typographical conventions are used throughout this manual. The names for special keys and function keys appear in capital letters. For example: ENTER When describing software applications, menu items, buttons, labels etc as they appear on the screen are written in bold type. For example: Select Save from the file menu. Filenames and paths use the courier font For example: Example\File.text Special terminology is written with leading capitals For example: Sensitive Earth Fault If reference is made to the IED's internal settings and signals database, the menu group heading (column) text is written in upper case italics For example: The SYSTEM DATA column If reference is made to the IED's internal settings and signals database, the setting cells and DDB signals are written in bold italics For example: The Language cell in the SYSTEM DATA column If reference is made to the IED's internal settings and signals database, the value of a cell's content is written in the Courier font For example: The Language cell in the SYSTEM DATA column contains the value English 2.3 NOMENCLATURE Due to the technical nature of this manual, many special terms, abbreviations and acronyms are used throughout the manual. Some of these terms are well-known industry-specific terms while others may be special product-specific terms used by Alstom Grid. A glossary at the back of this manual provides a complete description of all special terms used throughout the manual. 4 MU Agile AMU-TM-EN-1

15 MU Agile AMU Chapter 1 - Introduction We would like to highlight the following changes of nomenclature however: The word 'relay' is no longer used for the device itself. Instead, the device is referred to as an 'IED' (Intelligent Electronic Device), the 'device', the 'product', or the 'unit'. The word 'relay' is used purely to describe the electromechanical components within the device, i.e. the output relays. British English is used throughout this manual. The British term 'Earth' is used in favour of the American term 'Ground'. 2.4 MANUAL STRUCTURE The manual consists of the following chapters: Chapter 1: Introduction Chapter 2: Safety Information Chapter 3: Hardware Design Chapter 4: Configuration Chapter 5: Monitoring and Control Functions Chapter 6: Communications Chapter 7: Cyber-Security Chapter 8: MU Agile Configurator Software Chapter 9: Installation Chapter 10: Commissioning Instructions Chapter 11: Maintenance & Troubleshooting Chapter 12: Technical Specifications Appendix A: Symbols and Glossary Appendix B: Commissioning Record Forms Appendix C: Wiring Diagrams 2.5 PRODUCT SCOPE The MU Agile AMU takes analogue inputs from instrument transformer sensors (CTs and VTs) and outputs sampled and time-stamped digital data onto the IEC LE process bus. This provides safer and more economical cross-site communication using fibre optics and allows the primary and secondary plant to be decoupled. The MU Agile AMU is supplied with the following hardware: Item Case 30TE CT Inputs (1A or 5A) 4 VT inputs 4 100BaseFX port (Tx and Rx) 1 1 PPS time synchronisation connector 1 Status LEDs 4 Details MU Agile AMU-TM-EN-1 5

16 Chapter 1 - Introduction MU Agile AMU 3 FEATURES AND FUNCTIONS 3.1 CONTROL FUNCTIONS The device offers the following control functions: Watchdog contacts (1NO and 1NC) Self-monitoring (diagnostics) Read Only Mode 3.2 MEASUREMENT FUNCTIONS The device offers the following measurement functions: Measurement Function Measurements (Exact range of measurements depend on the device model) Event Records / Event logging Details IEC LE Sampled Values 2048 events 3.3 COMMUNICATION FUNCTIONS The device offers the following communication functions: Communication Function Front port USB Ethernet communications port 100BaseFX LC connector 1 PPS time synchronisation Fibre optic ST connector Protocols available IEC LE, SNTP Cyber-security Yes Configuration using USB Yes Details 6 MU Agile AMU-TM-EN-1

17 MU Agile AMU Chapter 1 - Introduction 4 COMPLIANCE The device has undergone a range of extensive testing and certification processes to ensure and prove compatibility with all target markets. Below is a list of standards with which the device is compliant. A detailed description of these criteria can be found in the Technical Specifications chapter. Compliance Standards EMC compliance (compulsory) Product safety (compulsory) R&TTE Compliance (compulsory) Condition Compliance 2004/108/EC (demonstrated by EN :2009) 2006/95/EC (demonstrated by EN :2005) 99/5/EC EMC EN50263, IEC /2/3/4/5/6/7, IEC /6/8/9/10/16 EN /18, IEEE/ANSI C /2/3, ENV50204, EN55022 Product Safety for North America UL/CL File No. UL/CUL E Environmental conditions IEC :2005, IEC :2001, -30:2005, -42:2003, -42:2003 Power supply interruption IEC , IEC Type tests for Insulation, creepage distance and clearances, high voltage dielectric withstand, and impulse voltage withstand Enclosure protection IEC :2005 IEC 60529:2002 IP10, IP30, IP52 Mechanical robustness IEC /2/3 Documentation IEC MU Agile AMU-TM-EN-1 7

18 Chapter 1 - Introduction MU Agile AMU 5 FUNCTIONAL OVERVIEW Analogue Data from CTs and VTs I V Time Sync Communication Ethernet Local USB IEC Measurements Watchdog Event Records Self Test E PPS IEC SNTP Configuration Figure 1: Functional Overview 8 MU Agile AMU-TM-EN-1

19 MU Agile AMU Chapter 1 - Introduction 6 ORDERING OPTIONS Information required with Order : Variants Model Type Analogue Merging Unit Order Number P04A Current Transformers 1A nominal 1 5A nominal 2 Case 30TE flush mounted 1 Language English only 0 Software Reference Initial release 10 Customisation / Regionalisation Default 0 Customer specific A Hardware design suffix Standard hardware A E00009 MU Agile AMU-TM-EN-1 9

20 Chapter 1 - Introduction MU Agile AMU 10 MU Agile AMU-TM-EN-1

21 SAFETY INFORMATION CHAPTER 2

22 Chapter 2 - Safety Information MU Agile AMU 12 MU Agile AMU-TM-EN-1

23 MU Agile AMU Chapter 2 - Safety Information 1 CHAPTER OVERVIEW This chapter provides information about the safe handling of the equipment. The equipment must be properly installed and handled in order to maintain it in a safe condition and to keep personnel safe at all times. You must be familiar with information contained in this chapter before unpacking, installing, commissioning, or servicing the equipment. This chapter contains the following sections: Chapter Overview 13 Health and Safety 14 Symbols 15 Installation, Commissioning and Servicing 16 Decommissioning and Disposal 21 MU Agile AMU-TM-EN-1 13

24 Chapter 2 - Safety Information MU Agile AMU 2 HEALTH AND SAFETY Personnel associated with the equipment must be familiar with the contents of this Safety Information. When electrical equipment is in operation, dangerous voltages are present in certain parts of the equipment. Improper use of the equipment and failure to observe warning notices will endanger personnel. Only qualified personnel may work on or operate the equipment. Qualified personnel are individuals who: Are familiar with the installation, commissioning, and operation of the equipment and the system to which it is being connected. Are familiar with accepted safety engineering practises and are authorised to energise and deenergise equipment in the correct manner. Are trained in the care and use of safety apparatus in accordance with safety engineering practises Are trained in emergency procedures (first aid). Although the documentation provides instructions for installing, commissioning and operating the equipment, it cannot cover all conceivable circumstances. In the event of questions or problems, do not take any action without proper authorisation. Please contact the appropriate technical sales office and request the necessary information. 14 MU Agile AMU-TM-EN-1

25 MU Agile AMU Chapter 2 - Safety Information 3 SYMBOLS Throughout this manual you will come across the following symbols. You will also see these symbols on parts of the equipment. Caution: Refer to equipment documentation. Failure to do so could result in damage to the equipment Warning: Risk of electric shock Earth terminal Protective Earth terminal MU Agile AMU-TM-EN-1 15

26 Chapter 2 - Safety Information MU Agile AMU 4 INSTALLATION, COMMISSIONING AND SERVICING 4.1 LIFTING HAZARDS Plan carefully, identify any possible hazards and determine whether the load needs to be moved at all. Look at other ways of moving the load to avoid manual handling. Use the correct lifting techniques and Personal Protective Equipment to reduce the risk of injury. Many injuries are caused by: Lifting heavy objects Lifting things incorrectly Pushing or pulling heavy objects Using the same muscles repetitively 4.2 ELECTRICAL HAZARDS Caution: All personnel involved in installing, commissioning, or servicing this equipment must be familiar with the correct working procedures. Caution: Consult the equipment documentation before installing, commissioning, or servicing the equipment. Caution: Always use the equipment in a manner specified by the manufacturer. Failure to do so will jeopardise the protection provided by the equipment. Warning: Removal of equipment panels or covers may expose hazardous live parts. Do not touch until the electrical power is removed. Take extra care when there is unlocked access to the rear of the equipment. Warning: Isolate the equipment before working on the terminal strips. Warning: Use a suitable protective barrier for areas with restricted space, where there is a risk of electric shock due to exposed terminals. Caution: Disconnect power before disassembling. Disassembly of the equipment may expose sensitive electronic circuitry. Take suitable precautions against electrostatic voltage discharge (ESD) to avoid damage to the equipment. 16 MU Agile AMU-TM-EN-1

27 MU Agile AMU Chapter 2 - Safety Information Caution: NEVER look into optical fibres. Always use optical power meters to determine operation or signal level. Caution: Insulation testing may leave capacitors charged up to a hazardous voltage. At the end of each part of the test, discharge the capacitors by reducing the voltage to zero, before disconnecting the test leads. Caution: Operate the equipment within the specified electrical and environmental limits. Caution: Before cleaning the equipment, ensure that no connections are energised. Use a lint free cloth dampened with clean water. Note: Contact fingers of test plugs are normally protected by petroleum jelly, which should not be removed. 4.3 UL/CSA/CUL REQUIREMENTS The information in this section is applicable only to equipment carrying UL/CSA/CUL markings. Caution: Equipment intended for rack or panel mounting is for use on a flat surface of a Type 1 enclosure, as defined by Underwriters Laboratories (UL). Caution: To maintain compliance with UL and CSA/CUL, install the equipment using UL/ CSA-recognised parts for: cables, protective fuses, fuse holders and circuit breakers, insulation crimp terminals, and replacement internal batteries. 4.4 FUSING REQUIREMENTS Caution: Where UL/CSA listing of the equipment is required for external fuse protection, a UL or CSA Listed fuse must be used. The listed protective fuse type is: Class J time delay fuse, with a maximum current rating of 15 A and a minimum DC rating of 250 V dc (for example type AJT15). Caution: Where UL/CSA listing of the equipment is not required, a high rupture capacity (HRC) fuse type with a maximum current rating of 16 Amps and a minimum dc rating of 250 V dc may be used (for example Red Spot type NIT or TIA). For P60 models, use a 4A maximum T-type fuse. MU Agile AMU-TM-EN-1 17

28 Chapter 2 - Safety Information MU Agile AMU Caution: Auxiliary supply wiring and digital input circuits should be protected by a high rupture capacity NIT or TIA fuse with maximum rating of 16 A. for safety reasons, current transformer circuits must never be fused. Other circuits should be appropriately fused to protect the wire used. 4.5 EQUIPMENT CONNECTIONS Warning: Terminals exposed during installation, commissioning and maintenance may present a hazardous voltage unless the equipment is electrically isolated. Caution: Tighten M4 clamping screws of heavy duty terminal block connectors to a nominal torque of 1.3 Nm. Tighten captive screws of terminal blocks to 0.5 Nm minimum and 0.6 Nm maximum. Caution: Always use insulated crimp terminations for voltage and current connections. Caution: Always use the correct crimp terminal and tool according to the wire size. Caution: Watchdog (self-monitoring) contacts are provided to indicate the health of the device on some products. We strongly recommend that you hard wire these contacts into the substation's automation system, for alarm purposes. 4.6 PROTECTION CLASS 1 EQUIPMENT REQUIREMENTS Caution: Earth the equipment with the supplied PCT (Protective Conductor Terminal). Caution: Do not remove the PCT. Caution: The PCT is sometimes used to terminate cable screens. Always check the PCT s integrity after adding or removing such earth connections. 18 MU Agile AMU-TM-EN-1

29 MU Agile AMU Chapter 2 - Safety Information Caution: Use a locknut or similar mechanism to ensure the integrity of stud-connected PCTs. Caution: The recommended minimum PCT wire size is 2.5 mm² for countries whose mains supply is 230 V (e.g. Europe) and 3.3 mm² for countries whose mains supply is 110 V (e.g. North America). This may be superseded by local or country wiring regulations. For P60 products, the recommended minimum PCT wire size is 6 mm². See manual for details. Caution: The PCT connection must have low-inductance and be as short as possible. Caution: All connections to the equipment must have a defined potential. Connections that are pre-wired, but not used, should be earthed when binary inputs and output relays are isolated. When binary inputs and output relays are connected to a common potential, unused pre-wired connections should be connected to the common potential of the grouped connections. 4.7 PRE-ENERGIZATION CHECKLIST Caution: Check voltage rating/polarity (rating label/equipment documentation). Caution: Check CT circuit rating (rating label) and integrity of connections. Caution: Check protective fuse or miniature circuit breaker (MCB) rating. Caution: Check integrity of the PCT connection. Caution: Check voltage and current rating of external wiring, ensuring it is appropriate for the application. MU Agile AMU-TM-EN-1 19

30 Chapter 2 - Safety Information MU Agile AMU 4.8 PERIPHERAL CIRCUITRY Warning: Do not open the secondary circuit of a live CT since the high voltage produced may be lethal to personnel and could damage insulation. Short the secondary of the line CT before opening any connections to it. Note: For most Alstom equipment with ring-terminal connections, the threaded terminal block for current transformer termination is automatically shorted when the module is removed. Therefore external shorting of the CTs may not be required. Check the equipment documentation first to see if this applies. Caution: Where external components such as resistors or voltage dependent resistors (VDRs) are used, these may present a risk of electric shock or burns if touched. Warning: Take extreme care when using external test blocks and test plugs such as the MMLG, MMLB and MiCOM ALSTOM P990, as hazardous voltages may be exposed. Ensure that CT shorting links are in place before removing MMLB test plugs, to avoid potentially lethal voltages. 4.9 UPGRADING/SERVICING Warning: Do not insert or withdraw modules, PCBs or expansion boards from the equipment while energised, as this may result in damage to the equipment. Hazardous live voltages would also be exposed, endangering personnel. Caution: Internal modules and assemblies can be heavy. Take care when inserting or removing modules into or out of the IED. 20 MU Agile AMU-TM-EN-1

31 MU Agile AMU Chapter 2 - Safety Information 5 DECOMMISSIONING AND DISPOSAL Caution: Before decommissioning, completely isolate the equipment power supplies (both poles of any dc supply). The auxiliary supply input may have capacitors in parallel, which may still be charged. To avoid electric shock, discharge the capacitors using the external terminals before to decommissioning. Caution: Avoid incineration or disposal to water courses. Dispose of the equipment in a safe, responsible an environmentally friendly manner, and if applicable, in accordance with country-specific regulations. MU Agile AMU-TM-EN-1 21

32 Chapter 2 - Safety Information MU Agile AMU 22 MU Agile AMU-TM-EN-1

33 HARDWARE DESIGN CHAPTER 3

34 Chapter 3 - Hardware Design MU Agile AMU 24 MU Agile AMU-TM-EN-1

35 MU Agile AMU Chapter 3 - Hardware Design 1 CHAPTER OVERVIEW This chapter provides information about the product's hardware design. This chapter contains the following sections: Chapter Overview 25 Hardware Architecture 26 Mechanical Implementation 27 Terminal Connections 29 Front Panel 30 MU Agile AMU-TM-EN-1 25

36 Chapter 3 - Hardware Design MU Agile AMU 2 HARDWARE ARCHITECTURE The main components are as follows: The housing, consisting of a front panel and connections at the rear The Main processor module consisting of the main CPU (Central Processing Unit), memory and an interface to the front panel HMI (Human Machine Interface) Communication modules Power supply All modules are connected by a parallel data and address bus, which allows the processor module to send and receive information to and from the other modules as required. There is also a separate serial data bus for conveying sampled data from the input module to the CPU. These parallel and serial databuses are shown as a single interconnection module in the figure, which shows the modules and the flow of information between them. LEDs Front Port Front Panel HMI Processor Module Memory Flash memory for all settings and records Super capacitorbacked DRAM for real-time clock Interconnection CTs VTs Analogue Inputs Power System Currents Power System Voltages Watchdog Contacts Watchdog Module Time Synchronisation 1 PPS Ethernet Module Ethernet Communication Auxiliary Supply PSU Module Communications E00255 Figure 2: Hardware design overview 2.1 MEMORY AND REAL TIME CLOCK The IED contains flash memory for storing Events and Alarms. Flash memory is non-volatile and therefore no backup battery is required. A dedicated supercapacitor keeps the on board real time clock operational for up to four days after power down. 26 MU Agile AMU-TM-EN-1

37 MU Agile AMU Chapter 3 - Hardware Design 3 MECHANICAL IMPLEMENTATION All products based on the P40Agile platform have common hardware architecture. The hardware has two main parts: the cradle and the housing. The cradle consists of the front panel which is attached to a carrier board. All of the hardware boards and modules are connected into the carrier board. All the boards and modules comprising the product are fixed into the cradle. They are not intended to be removed or inserted after the product has left the factory. The housing consists of the housing metalwork and connectors at the rear, which the boards in the cradle plug into. Figure 3: Exploded view of device 3.1 HOUSING Case dimensions for industrial products usually follow modular measurement units based on rack sizes. These are: U for height and TE for width, where: 1U = 1.75" = mm 1TE = 0.2 inches = 5.08 mm The product is available in panel-mount or standalone versions. All products are nominally 4U high. This equates to mm or 7 inches. The cases are pre-finished steel with a conductive covering of aluminium and zinc. This provides good grounding at all joints, providing a low impedance path to earth that is essential for performance in the presence of external noise. The 30TE case is mm (6 inches) wide. MU Agile AMU-TM-EN-1 27

38 Chapter 3 - Hardware Design MU Agile AMU TE REAR PANEL The 30TE rear panel consists of: MIDOS heavy duty terminal block 1 PPS time synchronisation fibre optic ST connector Ethernet fibre optic LC connector. Figure 4: Rear panel 28 MU Agile AMU-TM-EN-1

39 MU Agile AMU Chapter 3 - Hardware Design 4 TERMINAL CONNECTIONS 4.1 HARDWARE CONFIGURATION WatchDog PSU VN VA VB VC IA IB IC IN E00254 Figure 5: MU Agile AMU I/O Terminal Block Left (as viewed from rear) Terminal 1 Earth 2 Not used Watchdog, normally closed Watchdog, normally open 7 to 12 Not used Power Supply Unit Voltage Transformer VN Voltage Transformers VA and VB Voltage Transformer VC Current Transformer IA Current Transformer IB Current Transformer IC Current Transformer IN Description MU Agile AMU-TM-EN-1 29

40 Chapter 3 - Hardware Design MU Agile AMU 5 FRONT PANEL TE FRONT PANEL Figure 6: Front panel The front panel consists of: USB port 4 x fixed function tri-colour LEDs 5.2 USB PORT The USB port is situated on the front panel in the bottom left hand corner, and is used to communicate with a locally connected PC. It has two main purposes: To transfer settings information between the PC and the device. To upload firmware updates. To extract events. The port is intended for temporary connection during testing, installation and commissioning. You can connect the unit to a PC with a USB cable up to 5 m in length. The inactivity timer for the front port is set to 15 minutes. This controls how long the unit maintains its level of password access on the front port. If no messages are received on the front port for 15 minutes, any password access level that has been enabled is cancelled. 30 MU Agile AMU-TM-EN-1

41 MU Agile AMU Chapter 3 - Hardware Design Caution: When not in use, always close the cover of the USB port to prevent contamination. 5.3 FIXED FUNCTION LEDS The four LEDs on the front panel show the following conditions. Time Sync Switches ON (Red) when there is no 1 PPS time synchronising signal. Flashes (Red) in Holdover Mode. This occurs if no time sychronisation signal has been received for up to 2 seconds. The time accuracy is maintained during this period. Flashes (Green) when there is a local 1 PPS time synchronising signal present. Switches ON (Green) when there is a global 1 PPS time synchronising signal present. Alarm (Yellow) flashes when the device registers an alarm. This may be triggered by an internal fault, loss of the 1 PPS signal or if the IP address has not been set. Out of service (Yellow) is ON when the device's main function is unavailable. Healthy (Green) is ON when the IED is in correct working order, and should be ON at all times. It goes OFF if the unit s self-tests show there is an error in the hardware or software. The state of the healthy LED is reflected by the watchdog contacts at the back of the unit. MU Agile AMU-TM-EN-1 31

42 Chapter 3 - Hardware Design MU Agile AMU 32 MU Agile AMU-TM-EN-1

43 CONFIGURATION CHAPTER 4

44 Chapter 4 - Configuration MU Agile AMU 34 MU Agile AMU-TM-EN-1

45 MU Agile AMU Chapter 4 - Configuration 1 CHAPTER OVERVIEW Each product has different configuration parameters according to the functions it has been designed to perform. There is, however, a common methodology used across the entire product series to set these parameters. This chapter describes an overview of this common methodology, as well as providing concise instructions of how to configure the device. This chapter contains the following sections: Chapter Overview 35 MU Agile Configurator 36 Configuring a MiCOM IED 38 MU Agile AMU-TM-EN-1 35

46 Chapter 4 - Configuration MU Agile AMU 2 MU AGILE CONFIGURATOR The MU Agile Configurator is a software tool used to configure MU Agile AMU IEDs. It allows you to create IED configurations or open previously stored IED configurations, which can then be sent to selected IEDs. Alternatively you can edit an IED's configuration directly. 2.1 IEC SUBSTATION CONFIGURATION LANGUAGES The following languages are used. AMU Configuration Language (AMU) This is a proprietary language file which contains an AMU's IEC configuration information. This file is used for transferring data to or from an MU Agile AMU. Substation Configuration Language (SCL) This is an XML-based standard language used to configure IEC IEDs in substations. It allows common substation files to be exchanged between all devices and between different manufacturers' toolsets. This helps to reduce inconsistencies in system configurations. Users can specify and provide their own SCL files to ensure that IEDs are configured according to their requirements. SCL also allows IEC applications to be configured off-line without needing a network connection to the IED. Off-line system development tools can be used to generate the files needed for IED configuration automatically from the power system design. This significantly reduces the cost of IED configuration by eliminating most of the manual configuration tasks. SCL specifies a hierarchy of configuration files, which enable the various levels of the system to be described: SSD, SCD, ICD, CID and IID files. 2.2 IEC SUBSTATION CONFIGURATION FILES These files all use the standard Substation Configuration Language (SCL). They have the same construction but differ depending on the application. System Specification Description (SSD) This contains the complete specification of a substation automation system including a single line diagram for the substation and its functionalities, or logical nodes. The SSD contains SCD and ICD files. Substation Configuration Description (SCD) This contains information about the substation, all IEDs, data types and communications configuration. An SCD file is produced when engineering a system from the top down. To ensure consistency with the configuration of other IEDs in the system, this SCD file normally should not be edited. If there is no SCD file available, you can open an ICD file and edit this to suit the IED application. The ICD file can be preinstalled as a template and opened directly, or it can be provided separately. IED Capability Description file (ICD) This describes the IED's capabilities, including information on its data model (Logical Devices or Logical Node instances). 36 MU Agile AMU-TM-EN-1

47 MU Agile AMU Chapter 4 - Configuration 2.3 OPENING AN ICD TEMPLATE FILE If there is no SCD configuration file available, open an ICD template file for the MiCOM IED type that is to be configured. Once the ICD template is successfully loaded you can then look for all the IEDs that are connected. 1. Select File then New. The Template window appears. 2. Select the IED model number from the list. The list shows information about the IED's associated ICD template file, the SCL header details and the IEC features supported by the IED. 3. Use the Model Number filter at the top of the window to filter product variants TEMPLATE INSTALLED FOR REQUIRED IED TYPE If you can find the IED type or ICD template, highlight it and click the Select button. The configuration opens in manual editing mode so it can be customised for the application TEMPLATE NOT INSTALLED FOR REQUIRED IED TYPE 1. If there is no installed ICD file for the IED type that is to be configured, but there is one available from your supplier, click Browse for External. 2. A search dialog box appears. When you have found the required ICD file, click Open. 3. If the selected ICD Template file is already available as an installed template, a message appears and a new IED Configuration is created from the installed file. 4. If the selected ICD Template file has additional supported model numbers, a message appears asking if the additional model numbers should be merged into the installed template. 5. Select Yes to merge the new model numbers into the installed ICD Template file. This makes it available the next time the Template window appears. 6. If the selected ICD Template file is not installed, a message asks if it should be added to the application template library. 7. Select Yes to copy the selected ICD template file into the application library. This makes it available the next time the Template window appears. 2.4 OPENING AN EXISTING AMU CONFIGURATION FILE 1. Select File then Open. A search dialog box appears. 2. Select the required AMU file and click Open. 3. The tool tries to automatically match the AMU data to an installed ICD Template file and then display the configuration data in a read-only mode. 4. If it cannot automatically match the AMU data to an ICD Template file, the Template window appears. This allows you to manually assign the AMU data to an ICD Template file. If there is no suitable template available, click Cancel. 5. A message asks if the configuration is to be opened with Restricted Editing. Select Yes to display the configuration data in a read-only mode. MU Agile AMU-TM-EN-1 37

48 Chapter 4 - Configuration MU Agile AMU 3 CONFIGURING A MICOM IED Working offline: 1. Click the icon New MiCOM Configuration from an Installed ICD File. 2. Double-click the product variant. 3. Double-click TEMPLATE to expand it. Or working online: 1. Select Device then Manage IED. 2. Select the IED address and click Next. The Configurator tool reads information from the IED and shows it in the Summary view. The aspects of a MiCOM IED that can be configured come from its ICD Template file. These are shown in the main area of the Configurator tool, in the left hand side of the Editor window. The right hand side of the Editor window shows the configuration page of the selected category. Each configurable item of the MiCOM IED is categorised into one of the following groups in the Editor window. IED Details Displays general configuration and data about the IED and the selected ICD template file. Communications Displays configuration of the communications Subnetwork. Sampled Values Allows you to set details so the IED can transmit IEC LE sampled values. SNTP Allows you to configure the client/server SNTP time synchronisation. 1 PPS Allows you to set the delay caused by the length of the 1 PPS fibre optic cable. Acquisition Allows you to set the network frequency. CT and VT Configuration Allows you to specify details of the CTs and VTs. Simulation Allows you to set simulated magnitudes and angles of phase currents and voltages. Cybersecurity Allows you to set password restrictions. 3.1 IED DETAILS This displays general configuration and data about the IED and the selected ICD template file. Click the IED Details tab. This shows the following parameters. Setting Text Default Setting Available Options Description SCL File ID P04A ASCII text Here you can enter an ASCII SCL file ID. SCL File Version 2.23 ASCII text Here you can enter an ASCII SCL file version. Model Number Factory set None This displays the IED model number. This cannot be edited. Serial Number Factory set None This displays the IED serial number. This cannot be edited. Date/Time Configuration Factory set None This displays the IED time and date format. This cannot be edited. 38 MU Agile AMU-TM-EN-1

49 MU Agile AMU Chapter 4 - Configuration Setting Text Default Setting Available Options Description Software Version Factory set None This displays the software version installed on the IED. This cannot be edited. Software Build Date Factory set None This displays the build date of the software version installed on the IED. This cannot be edited. 3.2 ETHERNET COMMUNICATIONS SETUP This allows you to change an IED s Ethernet parameters. 1. Click the Settings tab. 2. View the IED Name and edit as required. 3. Set the IP address and Subnet Mask depending on the SNTP LAN configuration. The MAC Address is preset. The AMU has no Gateway IP so the SNTP server must be in the same subnet range as the AMU. Every IP address on the Local Area Network must be unique. Duplicate IP addresses result in conflict and must be avoided. Most IEDs check for a conflict on every IP configuration change and at power up and they raise an alarm if an IP conflict is detected. Setting Text Default Setting Available Options Description IED Name AMU0001 ASCII text This sets the ASCII name for the IED. MAC Address Factory set None This displays the MAC address of the rear Ethernet port. This cannot be edited. IP Address This sets the IP address of the IED. Subnet Mask This sets the subnet address for the IED. 3.3 SAMPLED VALUES This allows you to modify the settings for the IEC LE Sampled Values. These samples are taken at a resolution of 80 times per cycle, which is 4000 samples/sec at 50 Hz and 4800 samples/sec at 60 Hz. Click the Sampled Values tab. This shows the following parameters. Setting Text Default Setting Available Options Description Sampled Values Enable Enable Enable / Disable If enabled, this allows the IED to transmit IEC LE sampled values. Destination MAC Address 01-0C-CD FF-FF-FF-FF-FF- FF This sets the destination MAC address for sampled values. The default MAC address is the multicast address which is used by subscribing IEDs to identify Sampled Value streams from the AMU. Application ID (hex) 4000 None This is the IEC LE application ID. It cannot be edited. VLAN Identifier (hex) FFF MU Agile AMU-TM-EN-1 39

50 Chapter 4 - Configuration MU Agile AMU Setting Text Default Setting Available Options Description This sets the VLAN to be used on a partitioned network. 0 = No VLAN in use. VLAN Priority This sets the priority of sampled value data frames. Lowest priority = 0, highest priority = 7. Sampled Values Identifier Alstom_MU0101 ASCII text This sets the device identifier used in the SCL.The identifier is used by subscribing IEDs to identify Sampled Value streams from the AMU. 9-2LE Revision RC 3.0 RC 2.1 / RC 3.0 Use this to select the 9-2LE Revision used by the IED. The time synchronisation field in the RC2.1 SV frame consists of 0 (not synchronised) or 1 (synchronised). The RC3.0 SV frame consists of 0 (not synchronised), 1 (local synchronisation) or 2 (global synchronisation). 3.4 SNTP SYNCHRONISATION SNTP is used to synchronise the clocks of computer systems over packet-switched, variable-latency data networks, such as IP. It can be used to synchronise the internal clock of devices using IEC over internet with the clock of the SNTP server. This device uses SNTP to time stamp events and is synchronised by the main SNTP server. This is achieved by entering the IP address of the SNTP server. A second server is also configured with a different IP address for backup purposes. Click the SNTP tab. This allows you to edit the following parameters. Setting Text Default Setting Available Options Description SNTP Enable Disable Enable / Disable If enabled, this allows the IED to be synchronised using SNTP. Poll Rate (seconds) This sets how often the IED attempts to contact the SNTP server. Main Server IP Address This sets the IP address of the main SNTP server. The AMU has no Gateway IP so the SNTP server must be in the same subnet range as the AMU. Backup Server IP Address This sets the IP address of the backup SNTP server PPS SYNCHRONISATION The 1 PPS clock signal is used as a sampling reference. It is supplied from a GPS source with an accuracy of ± 1µsec or better, typically from a P594. The 1PPS input is fibre optic to avoid electromagnetic interference. The 1 PPS clock source therefore should have fibre optic outputs. The AMU can recognise Global and Local 1 PPS signals. It issues corresponding Global, Local and No Sync flags with the Sampled Value packets, as specified in IEC LE RC 3.0. The 1 PPS clock source should comply with this. The Global and Local signals are recognised by the 1 PPS pulse width received at the merging unit. Global 1 PPS Pulse width 5 µsec to 500 msec Local 1 PPS Pulse width 0.9 µsec to 1.1 µsec 40 MU Agile AMU-TM-EN-1

51 MU Agile AMU Chapter 4 - Configuration The AMU can correct propagation delays in the clock distribution. The delay is proportional to the length of the fibre cable between the clock source and the 1 PPS input of the AMU. This is defined by the following equation. Fibre optic delay (µsec) = Fibre cabling length (meters) / 300 To edit this delay, click the 1PPS tab. Setting Text Default Setting Available Options Description Fibre Optic Delay (µs) This sets the delay caused by the length of cable between the 1 PPS source and the AMU. This compensation is applied to the Sampled Value time stamps. 3.6 ACQUISITION Click the Acquisition tab. This sets the network frequency. Setting Text Default Setting Available Options Description Network Frequency (Hz) / 60 This sets the network frequency. 3.7 CT AND VT CONFIGURATION Click the CT and VT Configuration tab. This allows you to set the following CT and VT parameters. Setting Text Default Setting Available Options Description Phase CT Enable Enable / Disable If enabled the IED processes sampled values from the phase CTs. Phase CT Primary (A) This sets the primary rating of the power system CT connected to the AMU. Phase CT Secondary (A) Factory Set None This displays the current rating of the AMU phase CT. There are separate AMU models for 1A and 5A. This cannot be edited. CT PhsA Polarity Standard Standard / Inverted This sets the polarity of the phase A CT. CT PhsB Polarity Standard Standard / Inverted This sets the polarity of the phase B CT. CT PhsC Polarity Standard Standard / Inverted This sets the polarity of the phase C CT. Neutral CT Measured Derived / Measured / Disabled If this is set to Measured, the Neutral CT sampled values are taken from the Neutral CT of the AMU. If set to Derived, the Neutral CT sampled values are calculated from the phase CTs. Neutral CT Primary (A) This sets the current rating of the primary system neutral CT. MU Agile AMU-TM-EN-1 41

52 Chapter 4 - Configuration MU Agile AMU Setting Text Default Setting Available Options Description Neutral CT Secondary (A) Factory Set None This displays current rating of the AMU neutral CT. There are separate AMU models for 1A and 5A. This cannot be edited. CT Neu Polarity Standard Standard / Inverted This sets the polarity of the neutral CT. Phase VT Enable Enable / Disable If enabled, the IED processes sampled values from the phase VTs. Phase VT Primary (V) This sets the voltage rating of the primary system phase VT Phase VT Secondary (V) This sets the voltage rating of the AMU phase VT. Neutral VT Measured Derived / Measured / Disabled If this is set to Measured, the Neutral VT sampled values are taken from the Neutral VT of the AMU. If set to Derived, the Neutral VT sampled values are calculated from the phase VTs. Neutral VT Primary (V) This sets the voltage rating of the primary system neutral VT. Neutral VT Secondary (V) This sets the voltage rating of the AMU neutral VT. 3.8 SIMULATION Click the Simulation tab. This allows you to set the simulated magnitudes and phase angles of current and voltage for each phase. Setting Text Default Setting Available Options Description IA Secondary (A) This sets the simulated magnitude of IA. IA Phase (Deg) This sets the simulated phase angle of IA. IB Secondary (A) This sets the simulated magnitude of IB. IB Phase (Deg) This sets the simulated phase angle of IB. IC Secondary (A) This sets the simulated magnitude of IC. IC Phase (Deg) This sets the simulated phase angle of IC. IN Secondary (A) This sets the simulated magnitude of IN. IN Phase (Deg) This sets the simulated phase angle of IN. VA Secondary (V) MU Agile AMU-TM-EN-1

53 MU Agile AMU Chapter 4 - Configuration Setting Text Default Setting Available Options Description This sets the simulated magnitude of IA. VA Phase (Deg) This sets the simulated phase angle of VA. VB Secondary (V) This sets the simulated magnitude of VB. VB Phase (Deg) This sets the simulated phase angle of VB. VC Secondary (V) This sets the simulated magnitude of VC. VC Phase (Deg) This sets the simulated phase angle of VC. VN Secondary (V) This sets the simulated magnitude of VN. VN Phase (Deg) This sets the simulated phase angle of VN. 3.9 CYBERSECURITY Click the Cybersecurity tab. This allows you to edit the following password parameters. Setting Text Default Setting Available Options Description Attempts Limit This sets the number of attempts allowed to enter a valid password. Attempts Timer (Minutes) This sets the time limit to enter a valid password. Blocking Timer (Minutes) This sets the amount of time the password entry is barred EXTRACTING AN IED'S CONFIGURATION To extract a configuration from an IED: 1. Select Device then Manage IED. 2. Select the IED address and click Next. 3. Click the Extract Configuration button. 4. Enter the IED's password and click Apply. MU Agile AMU-TM-EN-1 43

54 Chapter 4 - Configuration MU Agile AMU 3.11 VALIDATING AND SENDING AN IED'S CONFIGURATION Before you send a configuration to an IED you need to validate the configuration. 1. Select Device then Validate Configuration. Or click the Validate Configuration icon. The right-hand lower pane shows lists of Errors, Warnings and Messages. 2. Edit the settings and click the Refresh Validation Report button. Once the validation report is ok you can then send the configuration to the IED. 3. Select Device then Send Configuration. Or click the Send Configuration to Device icon MANAGE SCHEMAS This function allows you to modify the hierarchical structure of schemas. 1. Select Tools then Options. 2. Select the General tab then click the Manage Schemas button. 3. Add or remove SCL schemas in the hierarchical structure. 4. Click Done. 44 MU Agile AMU-TM-EN-1

55 MONITORING AND CONTROL CHAPTER 5

56 Chapter 5 - Monitoring and Control MU Agile AMU 46 MU Agile AMU-TM-EN-1

57 MU Agile AMU Chapter 5 - Monitoring and Control 1 CHAPTER OVERVIEW As well as providing a range of protection functions, the product includes comprehensive monitoring and control functionality. This chapter contains the following sections: Chapter Overview 47 Records 48 Event Types 49 Measurements 50 MU Agile AMU-TM-EN-1 47

58 Chapter 5 - Monitoring and Control MU Agile AMU 2 RECORDS The device logs event records which are stored in the device's non-volatile memory. It is important to log records because this allows you to establish the sequence of events that occurred, for example following a particular power system condition. The device is capable of storing up to 8192 event records. This includes maintenance records. Event time is taken from the SNTP server. When the available space is exhausted, the oldest record is automatically overwritten by the new one. The device's internal clock provides a time tag for each event, to a resolution of 1 ms. Event records can be extracted using the Configurator software tool through the USB port. 2.1 EVENT RECORDS Event records are generated when certain events happen and are immediately time stamped. They are then transferred to non-volatile memory for storage. In extreme cases, it is possible for the buffer to overflow under avalanche conditions. If this occurs, a maintenance record is generated to indicate this loss of information. You can extract the event records using the Configurator software tool. 1. Select Device then Manage IED. 2. Select the IED address and click Next. 3. Click the Extract Events button. A value of '0' corresponds to the latest event, '1' the next latest and so on. 4. Click Log Off. 48 MU Agile AMU-TM-EN-1

59 MU Agile AMU Chapter 5 - Monitoring and Control 3 EVENT TYPES There are several different types of event: Alarm events Maintenance report notifications Security Events Platform Events 3.1 ALARM EVENTS The IED logs any alarm conditions it generates as individual events. A Time and Date stamp is always associated with the event in question and this is always displayed first. 3.2 MAINTENANCE EVENTS Internal failures detected by the self-monitoring circuitry are logged as maintenance records. An event record is created each time this happens. A Time and Date stamp is always associated with the event in question and this is always displayed first. 3.3 SECURITY EVENTS An event record is generated each time a setting is executed, which requires an access level. A Time and Date stamp is always associated with the event in question and this is always displayed first. The event type description shows the type of change. 3.4 PLATFORM EVENTS This group is for general events. A Time and Date stamp is always associated with the event in question and this is always displayed first. MU Agile AMU-TM-EN-1 49

60 Chapter 5 - Monitoring and Control MU Agile AMU 4 MEASUREMENTS 4.1 MEASURED QUANTITIES The device directly measures phase-to-phase and phase-to-neutral voltage and current values. The values are produced by sampling the analogue input quantities, converting them to digital quantities and using special algorithms to calculate the magnitude and phase values. To view measured values, use an appropriate 9-2LE testing tool. See the Commissioning Instructions chapter. 50 MU Agile AMU-TM-EN-1

61 COMMUNICATIONS CHAPTER 6

62 Chapter 6 - Communications MU Agile AMU 52 MU Agile AMU-TM-EN-1

63 MU Agile AMU Chapter 6 - Communications 1 CHAPTER OVERVIEW The MU Agile AMU supports substation automation communications based on Ethernet and USB technologies. This chapter contains the following sections: Chapter Overview 53 Communication Interfaces 54 IEC MU Agile AMU-TM-EN-1 53

64 Chapter 6 - Communications MU Agile AMU 2 COMMUNICATION INTERFACES The MU Agile AMU has a number of standard communication interfaces. The hardware and protocols are summarised below: Port Availability Physical Layer Use Data Protocols Front Standard USB 2.0 Rear Ethernet port Rear 1 PPS time sync port Standard Standard Fibre Fibre Local settings Firmware download Sampled Values Time stamping Sample Value time synchronisation Courier IEC LE SNTP 2.1 UNIVERSAL SERIAL BUS The physical layer standard used in serial communications is the Universal Serial Bus (USB), compliant with USB 2.0 type B. It is used for local communication with the Merging Unit when transferring settings, measurements and records, and when downloading firmware updates. USB is not a data protocol. It only describes the physical characteristics required for two devices to communicate with each other. 54 MU Agile AMU-TM-EN-1

65 MU Agile AMU Chapter 6 - Communications 3 IEC This section describes how the IEC standard is applied to Alstom Grid products. It is not a description of the standard itself. The level at which this section is written assumes that the reader is already familiar with the IEC standard. IEC is the international standard for Ethernet-based communication in substations. It enables integration of all protection, control, measurement and monitoring functions within a substation, and additionally provides the means for interlocking and inter-tripping. It combines the convenience of Ethernet with the security that is so essential in substations today. The MU Agile AMU only supports IEC LE not IEC MMS (SCADA protocol). 3.1 INTRODUCTION TO IEC LE IEC LE defines Process Bus communications between the different components of the substation automation system. MiCOM IEDs with an IEC LE interface can communicate with the Process Bus and receive IEC LE data from Merging Units. Analogue Merging Units digitise analogue values from conventional CTs and VTs, replacing analogue inputs. This simplifies the installation by replacing low voltage analogue measurement wiring with the Process Bus Local Area Network. Using a fibre optic network instead of heavy copper cables between the measuring device and the IED provides safer and more economical cross-site cabling. It also allows IEDs to receive current and voltage sampled data through Digital Merging Units from non-conventional instrument transformers such as optical and Rogowski devices. 3.2 ANALOGUE MERGING UNIT CONCEPTS The MU Agile AMU takes analogue inputs from instrument transformer sensors (CTs and VTs) and outputs sampled and time-stamped digital data onto the IEC LE process bus. This provides safer and more economical cross-site communication using fibre optics and allows the primary and secondary plant to be decoupled. Primary plant (CTs, VTs and CBs) Secondary plant (Communications network, IEDs, controller stations etc.) IEDs Merging Unit Communications network CT and VT wired analogue circuits and hard wired binary data IEC LE Ethernet communication V01053 Figure 7: Decoupling primary and secondary plant with merging units MU Agile AMU-TM-EN-1 55

66 Chapter 6 - Communications MU Agile AMU Merging Units deliver Ethernet multicast transmission of sampled analogue values over a Process Bus. They also support Ethernet connection to the station bus. The process bus and station bus are connected according to the IEC LE standard. Station Bus IEC Analogue Merging Unit Sampled Values IED Process Bus IEC LE GOOSE IEC IED CT and VT wired analogue circuits IEC LE Ethernet communication IEC GOOSE V01054 Figure 8: Location of Merging Units in the substation Each merging unit samples the values of phase currents (Ia, Ib, Ic), phase voltages (Va, Vb, Vc), residual current and residual voltage. The Sampled Value frames are multicast over Ethernet using a fibre optic connection. IEC LE supports both unicast and multicast messaging. However, the AMU is multicast only. Alstom Grid has carried out extensive testing of the MU Agile AMU with Alstom Grid protection products. However, IEC LE is new technology. Therefore we recommend that you consult your local representative to determine whether further testing is required before the MU Agile AMU is used with third party IEDs. 3.3 SAMPLED VALUE DISTRIBUTION The way that sampled values from the merging unit are distributed to the protection, control and measurement IEDs depends on the application. Point to point connections between the AMU and a protection IED can be used to replace conventional schemes where each CT core is wired to separate IED. Alternatively they can be used to simplify the networking requirements. Sampled Values from the AMU can also be distributed to multiple IEDs using appropriate network equipment, such as an Ethernet switch. One possible example is where one AMU is connected to two IEDs through an Ethernet switch. Any switches used must be substation hardened and preferably in the control room close to the protection IEDs. The switch also allows sampled values to be received from other merging units. For more complex networks, such as a PRP network, a REDBOX that is external to the AMU can be used. 3.4 TIME SYNCHRONISATION In modern protection schemes it is necessary to synchronise the device's real time clock with other devices. The outputs of the merging units need to be accurately time stamped, therefore the merging units need to be 56 MU Agile AMU-TM-EN-1

67 MU Agile AMU Chapter 6 - Communications accurately time-synchronised. The synchronising is done using the global positioning satellite system and is delivered over fibre-optic links in the form of one-pulse-per-second (1 PPS) signals. MU Agile AMU-TM-EN-1 57

68 Chapter 6 - Communications MU Agile AMU 58 MU Agile AMU-TM-EN-1

69 INSTALLATION CHAPTER 7

70 Chapter 7 - Installation MU Agile AMU 60 MU Agile AMU-TM-EN-1

71 MU Agile AMU Chapter 7 - Installation 1 CHAPTER OVERVIEW This chapter provides information about installing the product. This chapter contains the following sections: Chapter Overview 61 Handling the Goods 62 Location 63 Mounting the Device 64 Cables and Connectors 67 Case Dimensions 70 MU Agile AMU-TM-EN-1 61

72 Chapter 7 - Installation MU Agile AMU 2 HANDLING THE GOODS Our products are of robust construction but require careful treatment before installation on site. This section discusses the requirements for receiving and unpacking the goods, as well as associated considerations regarding product care and personal safety. Caution: Before lifting or moving the equipment you should be familiar with the Safety Information chapter of this manual. 2.1 RECEIPT OF THE GOODS On receipt, ensure the correct product has been delivered. Unpack the product immediately to ensure there has been no external damage in transit. If the product has been damaged, make a claim to the transport contractor and notify us promptly. For products not intended for immediate installation, repack them in their original delivery packaging. 2.2 UNPACKING THE GOODS When unpacking and installing the product, take care not to damage any of the parts and make sure that additional components are not accidentally left in the packing or lost. Do not discard any CDROMs or technical documentation. These should accompany the unit to its destination substation and put in a dedicated place. The site should be well lit to aid inspection, clean, dry and reasonably free from dust and excessive vibration. This particularly applies where installation is being carried out at the same time as construction work. 2.3 STORING THE GOODS If the unit is not installed immediately, store it in a place free from dust and moisture in its original packaging. Keep any de-humidifier bags included in the packing. The de-humidifier crystals lose their efficiency if the bag is exposed to ambient conditions. Restore the crystals before replacing it in the carton. Ideally regeneration should be carried out in a ventilating, circulating oven at about 115 C. Bags should be placed on flat racks and spaced to allow circulation around them. The time taken for regeneration will depend on the size of the bag. If a ventilating, circulating oven is not available, when using an ordinary oven, open the door on a regular basis to let out the steam given off by the regenerating silica gel. On subsequent unpacking, make sure that any dust on the carton does not fall inside. Avoid storing in locations of high humidity. In locations of high humidity the packaging may become impregnated with moisture and the de-humidifier crystals will lose their efficiency. The device can be stored between 25º to +70ºC for unlimited periods or between -40 C to + 85 C for up to 96 hours (see technical specifications). 2.4 DISMANTLING THE GOODS If you need to dismantle the device, always observe standard ESD (Electrostatic Discharge) precautions. The minimum precautions to be followed are as follows: Use an antistatic wrist band earthed to a suitable earthing point. Avoid touching the electronic components and PCBs. 62 MU Agile AMU-TM-EN-1

73 MU Agile AMU Chapter 7 - Installation 3 LOCATION The product can be located indoors or outdoors in a suitably designed cubicle or control cabinet. When located outdoors, the enclosure should be rated at IP 52, preferably IP 54. One of the benefits of IEC Process Bus is the reduction of copper cabling in the substation. This includes CT and VT wiring to IEDs for protection and control. By locating the AMU close to the instrument transformers, the copper field wiring can be reduced in length. MU Agile AMU-TM-EN-1 63

74 Chapter 7 - Installation MU Agile AMU 4 MOUNTING THE DEVICE The products are available in the following forms For flush panel and rack mounting Software only (for upgrades) 4.1 FLUSH PANEL MOUNTING Panel-mounted devices are flush mounted into panels using M4 SEMS Taptite self-tapping screws with captive 3 mm thick washers (also known as a SEMS unit). These fastenings are available in packs of five (our part number ZA ). Caution: Do not use conventional self-tapping screws, because they have larger heads and could damage the faceplate. Alternatively, you can use tapped holes if the panel has a minimum thickness of 2.5 mm. For applications where the product needs to be semi-projection or projection mounted, a range of collars are available. If several products are mounted in a single cut-out in the panel, mechanically group them horizontally or vertically into rigid assemblies before mounting in the panel. Caution: Do not fasten products with pop rivets because this makes them difficult to remove if repair becomes necessary. If the product is mounted on a BS EN60529 IP52 compliant panel, fit a metallic sealing strip between adjoining products (part no GN ) and fit a sealing ring around the complete assembly, according to the following table. Width Sealing ring for single tier Sealing ring for double tier 10TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ TE GJ GJ MU Agile AMU-TM-EN-1

75 MU Agile AMU Chapter 7 - Installation RACK MOUNTING Panel-mounted variants can also be rack mounted using single-tier rack frames (our part number FX ), as shown in the figure below. These frames are designed with dimensions in accordance with IEC and are supplied pre-assembled ready to use. On a standard 483 mm (19 inch) rack this enables combinations of case widths up to a total equivalent of size 80TE to be mounted side by side. The two horizontal rails of the rack frame have holes drilled at approximately 26 mm intervals. Attach the products by their mounting flanges using M4 Taptite self-tapping screws with captive 3 mm thick washers (also known as a SEMS unit). These fastenings are available in packs of five (our part number ZA ). Caution: Risk of damage to the front cover molding. Do not use conventional self-tapping screws, including those supplied for mounting MiDOS products because they have slightly larger heads. Once the tier is complete, the frames are fastened into the racks using mounting angles at each end of the tier. Figure 9: Rack mounting of products Products can be mechanically grouped into single tier (4U) or multi-tier arrangements using the rack frame. This enables schemes using products from different product ranges to be pre-wired together before mounting. Use blanking plates to fill any empty spaces. The spaces may be used for installing future products or because the total size is less than 80TE on any tier. Blanking plates can also be used to mount ancillary components. The part numbers are as follows: Blanking plate part number Case size summation 5TE GJ TE GJ TE GJ TE GJ TE GJ MU Agile AMU-TM-EN-1 65

76 Chapter 7 - Installation MU Agile AMU Case size summation 30TE GJ TE GJ TE GJ Blanking plate part number 4.2 WALL MOUNTING Rack-mounted variants can also be wall mounted using individual wall mounting brackets. These should be designed with dimensions in accordance with IEC Caution: Risk of damage to the cabling. Allow sufficient space behind the IED for minimum cable bending radiuses. Check the cable manufacturer's specifications. Warning: Ensure all wall mounting brackets components are suitably earthed. Caution: Ensure the IED is mounted securely to minimise any movement due to vibration. 4.3 SOFTWARE ONLY It is possible to upgrade an existing device by purchasing software only (providing the device is already fitted with the requisite hardware). There are two options for software-only products: Your device is sent back to the Alstom factory for upgrade. The software is sent to you for upgrade. Please contact your local representative if you wish to procure the services of a commissioning engineer to help you with your device upgrade. Note: Software-only products are licensed for use with devices with specific serial numbers. Caution: Do not attempt to upgrade an existing device if the software has not been licensed for that speciific device. 66 MU Agile AMU-TM-EN-1

77 MU Agile AMU Chapter 7 - Installation 5 CABLES AND CONNECTORS This section describes the type of wiring and connections that should be used when installing the device. For pin-out details please refer to the Hardware Design chapter or the wiring diagrams. Caution: Before carrying out any work on the equipment you should be familiar with the Safety Section and the ratings on the equipment s rating label. All field wiring including the fibre Ethernet port is terminated at the back of the device on a MIDOS type terminal block. 5.1 TERMINAL BLOCKS The device uses MiDOS terminal blocks as shown below. Figure 10: MiDOS terminal block The MiDOS terminal block consists of up to 28 x M4 screw terminals. The wires should be terminated with rings using 90 ring terminals, with no more than two rings per terminal. The products are supplied with sufficient M4 screws. M4 90 crimp ring terminals are available in three different sizes depending on the wire size. Each type is available in bags of 100. Part number Wire size Insulation color ZB mm 2 (22 16 AWG) Red ZB mm 2 (16 14 AWG) Blue ZB mm 2 (12 10 AWG) Un-insulated MU Agile AMU-TM-EN-1 67