What s New in IEC 61850? Status and Advantages

Transcription

1 What s New in IEC 61850? Status and Advantages Christoph Brunner Alex Apostolov Eric A. Udren it4power OMICRON Quanta Technology Zug, Switzerland Los Angeles, CA Pittsburgh, PA Presented to i-pcgrid Workshop 2011 Pacific Gas & Electric Company San Francisco, CA March 31, 2011

2 IEC is living and growing The part you knew IEC Edition 1 the seed 1700 pages of living genome. IEC Edition 2 International application - polished genes Expanded structure New clarity TISSUES (bugs) cleared New practical features New application domains Page 2

3 IEC is branching New parts of IEC Expanding outside the substation Between substations To control centers Communications and application modeling across the entire power system Integration with enterprise systems Interfaces with popular SCADA and control protocols Page 3

4 IEC standard parts (Ed 1) System Aspects Part 1: Introduction and Overview Part 2: Glossary Part 3: General Requirements Part 4: System and Project Management Part 5: Comm Requirements for Functions and Device Models Configuration Part 6: Configuration Language for electrical Substation IED s Testing Part 10: Conform. Testing Data Models Basic Communication Structure for Substations and Feeder Equipment Part 7-4: Compatible Logical Node Classes and Data Classes Part 7-3: Common Data Classes Abstract Comm. Services Basic Communication Structure for Substations and Feeder Equipment Part 7-2: Abstract Communication Services (ACSI) Part 7-1: Principles and Models Mapping to real Comm. Networks (SCSM) Part 8-1: Mapping to MMS and ISO/IEC Part 9-1: Sampled Values over Serial Unidirectional Multidrop Point-to-Point link Part 9-2: Sampled Values over ISO/IEC Page 4

5 What is new in Ed 2 of existing parts? Clarifications and corrections (TISSUES) Modeling Power Quality Statistical evaluation of informatio New models for mechanical equipment and measurements of non-electric quantities Enhanced features for testing support Support for exchange of engineering information across projects Redundancy possibility to have IEDs with dual connections Page 5

6 IEC new parts IEC Hydroelectric power plants Communication for monitoring and control IEC Communication Systems for Distributed Energy Resources (DER) IEC / (Technical Reports) Explain how to use the concepts of IEC to model the applications IEC x Communications for monitoring and control of wind power plants Page 6

7 Mappings for gateways IEC Guideline to exchange information from a CDC based data model using IEC / -104 IEEE Exchanging Information between networks Implementing IEC and IEEE1815 (DNP3) Intended to become a IEC dual logo standard (IEC ) IEC Device Protection 101/104 Station Controller & Gateway DNP Master DNP Outstation IEC Client IEC Device Gateway IEC Device Bay Controller IEC Device Page 7

8 How to address new areas? Prepare technical reports "how to use IEC for... " Technical reports describing The use cases considered The impact on the communication The impact on the modeling The impact on the engineering Results will be used to update the standards (Amendment / new Edition) Page 8

9 WG10 technical reports IEC : Using IEC for communication between substations (published) IEC : Using IEC for communication between substations and control center IEC : Using IEC for condition monitoring IEC : Network engineering guidelines IEC : Using IEC to transmit synchrophasor information according to IEEE C Page 9

10 WG17 technical reports IEC : Using IEC for distribution automation IEC : IEC object models for photovoltaic, storage and other DER inverters IEC : IEC object models for electrical vehicles IEC : IEC object models for battery storage systems Provide a "fast track" for urgently needed models for SmartGrid applications Supported by the name space concept of IEC Page 10

11 Further topics under consideration Methodologies for testing of functions in IEC based systems In a first step, a technical report shall be prepared to address the topic A document will be circulated within IEC to inform about the planned work Modeling of logics Goal is to support design of distributed logic Prepare UML model of IEC Prepare webbased access to IEC models Page 11

12 Mirroring control information IED Control service oprcvd ctlval Wired output opok topok Page 12

13 Isolation and test Sim TEST Pxxx LPHD PTRC Protection IED Samples (Sim=FALSE) Samples (Sim=TRUE) TestSet TCTR TCTR TCTR Trip (Test= TRUE) Trip (Test=FALSE) TEST-BLOCKED TVTR TVTR TVTR Merging Unit XCBR Breaker XCBR.Pos.opOk XCBR.Pos.tOpOk Page 13

14 Test of interlocking Page 14

15 What s New in IEC 61850? Parts 90-X and other new features Eric A. Udren Quanta Technology Pittsburgh, PA

16 Part communications between substations High speed GOOSE or SV packets between stations for: Directional Comparison pilot/unit line protection - POTT, blocking Current differential & phase comparison line protection Direct transfer trip; interstation interlocking or operation blocking Synchrophasors; reclosing including parallel line applications. SIPS & RAS; generator shedding; out-of-step protection Fault locator systems Typical needs: V &I, phasor/filtered or instantaneous; binary points Data synchronized between subs (time error < 0.1 ms) Bandwidth for three phase measurements ( 64 kbps) Propagation delay usually critical ( 5 ms) High reliability - low BER <10-6, redundant paths Backup functions in the functional design Page 16

17 90-1 on interstation communications communications, modeling/semantics, & system engineering across stations need Ethernet communications. Ethernet between stations: Wideband direct interfaces of LANs Tunnel that filters and directly passes packets Gateway that acts as a proxy for packets Ethernet LAN/WAN configuration advice Station A Function A1? Proxy B1 Teleprotection equipment acting as gateway?? Station B Function B1 Function A2 Transparent Tunnel Function B2 Page 17

18 Part 90-1 contents Use cases for functions Performance classes latency, bandwidth, security & dependability New LNs for channel configuration, DC, differential protection fed back to 7-4 Ed.2 (ITPC, PSCH, RMXU) Ethernet communications transport strategies/design Project engineering design and use of SCL (Part 6) across multiple substations with shared functions Result - use GOOSE and Sampled Values services as already defined in Parts 7, 8-1, publish and subscribe between stations! Page 18

19 and Using IEC for the communication between substations and control centers in development 90-3 Condition monitoring of primary power apparatus communications & asset management requirements: Transformers, LTCs GIS Lines, UG cables Sta. batteries Page 19

20 Secondary condition monitoring Condition monitoring of secondary systems (P&C equipment) will be separate development Take advantage of self-monitoring functions of relays and IEDs internal processors and related parts data communications with a heartbeat monitors function of entire path between processors Goal - Incorporate monitoring into engineering process so you get it with completed installation design Page 20

21 Part Network Engineering Guidelines communications are mapped to Ethernet Network/physical layers were black box you make it work Now comprehensive guidance on reliable network design Page 21

22 Part Network Engineering Guidelines Layer 2 redundant network paths for protection messages Short-bump or bumpless rerouting for segment failures Rapid spanning tree protocol (RSTP) from IT Parallel Redundancy Protocol (PRP) 2 LANs High availability Seamless Redundancy (HSR) source destinations singly attached nodes C -frame DANH CPU D -frame DANH CPU switch interlink RedBox A -frame (HSR) B -frame (HSR) CPU CPU CPU CPU CPU DANH DANH DANH DANH DANH destinations Page 22

23 90-4 contents Substation topology and physical locations of IEDs Protection and control application Logical data flows and traffic patterns Latency requirements for different types of traffic Redundancy and resiliency Reliability, availability, maintainability Time synchronization and accuracy Network management Configuration & addresses Environmental issues EMI immunity Form factor Physical media Remote connectivity Cyber security Upgradeability Testing Cost Page 23

24 Precision timing in 90-4 We seek a precision time distribution protocol operating on the Ethernet network for: Sampling of V&I by merging units on process bus Synchrophasor timing All other time tagging Without running separate timing signals among relays, IEDs, merging units get rid of IRIG-B cables, sampling time fibers, etc. Use IEEE 1588 precision time protocol (PTP) Use IEEE C profile for protection applications Also to be used in for merging units Page 24

25 90-5 Synchrophasor Transport Split of Synchrophasor Standard IEEE C on measurement and C on transport. WG 10 is defining a new transport mechanism for synchrophasors in wide area networks according to modeling and system engineering principles: Built on Sampled Values & GOOSE messaging models & mappings fits SCL system engineering Presumes Ethernet network connections May utilize WAN or the Gateway approach as described in 90-1 for TDM or other non-ethernet channels TC 95 and IEEE will make new IEC measurement standard based on C Page 25

26 Features of 90-5 transport approach Sampled Value or GOOSE publish/subscribe across the WAN Add layer 3 transport UDP/IP unicast or multicast (unconfirmed continuing stream of data packets not like TCP/IP) Conventional routers can identify packets and send to the subscribing locations across the WAN Routers can even search for subscribers and establish routes dynamically (good support for NASPInet!) New - a big deal end-to-end authentication in the packet! SHA-2 authentication hash code - computed in real time. Industry standard Group Domain of Interpretation (GDOI) security key distribution/management Implementation roadmap router or gateway security now; hash code handling in relays, IEDs, clients later with new computing hardware. Page 26

27 New this week interoperability testing! New industry program to move beyond conformance testing Connect multiple vendors products in a neutral environment and work out compatibility issues At EDF labs near Paris, week of March 28: Process bus merging units and relays Servers (e.g. relays) and clients (e.g. data concentrators) Ethernet performance results Network configurations and RSTP performance Page 27

28 What s New in IEC 61850? More technical features Testing Advantages of Alex Apostolov OMICRON Los Angeles, CA

29 IEC Edition 2: InRef Page: 29 Page 29

30 IEC Edition 2: LD Hierarchy Page: 30 Page 30

31 Ethernet Port LN LCCH Page 31

32 Values of Mode and Behavior Value Mode 1 on The application represented by the LN works. All communication services work and get updated values 2 on-blocked The application represented by the LN works. No output data (digital by relays or analog setting) will be issued to the process. All communication services work and get updated values. Data objects will be transmitted with quality operatorblocked. Control commands will be rejected. See note below the table 3 test The application represented by the LN works. All communication services work and get updated values. Data objects will be transmitted with quality test. Control commands with quality test will be accepted only by LNs in test or test- blocked mode. Processed as valid means that the application should react in the manner what is foreseen for test. 4 test/blocked The application represented by the LN works. No output data (digital by relays or analog setting) will be issued to the process. All communication services work and get updated values. Data objects will be transmitted with quality test. Control commands with quality test will be accepted only by LNs in TEST or TEST-Blocked mode. 5 off The application represented by the LN doesn t work. No process output is possible. No control command should be acknowledged (negative response). Only the data object Mod and Beh should be accessible by the services. Note: The Mod= blocked from edition 1 is changed in edition 2 to on-blocked. Page 32

33 Values of Mode and Behavior Page 33

34 GOOSE Testing t x Subscribed GOOSE messages Communication processor Application Logic to copy value t c* t roundtrip t application t a* t y published GOOSE Physical device PD1 Page 34

35 CIM Overview - Packages Generation LoadModel Outage Protection SCADA Assets Documentation Wires Meas Financial Overlap with Consumer Core2 Topology Energy Scheduling ERP Support OAG Message s Core Domain Reservation Page 35

36 Objectives Substation 1 1 Voltage level Bay Device Terminal 1 ConNode 1 CBR Subdevice Phase 0..* LNode 0,1 Router associations 1 1..* 1 1 IED AccessPoint Server LDevice * 1..* 0,1 1..* 1 Subnetwork DIS 1 PTR 1..* Data Functional / substation structure Product / IED structure Communication structure Page 36

37 COMTRADE for Synchrophasors PSRC H8 Application of COMTRADE for Synchrophasor Data Approved by IEEE PSRC Subcommittee H on May 13, 2010 as a PSRC Report PSRC H8 1 Schema for Phasor Data Using the COMTRADE File Standard Report of the H8 Working Group of IEEE Power System Relaying Committee Application of COMTRADE for Exchange of Synchrophasor Data Page 37

38 Link between COMTRADE, IEC and CIM H17: Establishing Link between COMTRADE, IEC and CIM Goal is to link IEC 61850, CIM and COMTRADE in a way, that the COMTRADE channels can be associated to a node in the power network Page 38

39 in the power network IEC SCL RADR1 RADR2 IEC SCL RADR1 CIM COMTRADE cfg File 1 Substation A Channel 1 Channel 2 COMTRADE cfg File 2 Channel 1 RADR4 IEC SCL RADR5 COMTRADE cfg File 3 Channel 1 Channel 2 Page 39

40 IEC Function Blocks The basic unit for encapsulating and reusing Intellectual Property (IP="know-how") is the function block type. It is a class defining the behavior of (possibly) multiple instances. It includes event inputs and outputs as well as the more traditional data inputs and outputs, to provide for synchronization between data transfer and program execution in distributed systems. Page 40

41 IEC Function Blocks Page 41

42 IEC Function Blocks Execution Control Chart Algorithms IEC Page 42

43 IEC Benefits Page 43

44 Advantages of Process Bus Practical elimination of CT saturation because of the elimination of the current leads resistance. CT knee-point voltage is a function of the resistance of the different components of the current circuit: VK = f (RCT, RL, RRP) VK = Required CT knee-point voltage (volts) RCT = Resistance of CT secondary winding (ohms) RL = Resistance of a single lead from relay to CT RRP = Impedance of a relay phase current input Page 44

45 Advantages of Process Bus An additional benefit of process bus based solutions is the improvements of the safety of the substation Elimination of one of the main safety related problems - an open current circuit condition. If this occurs while the primary winding is energized, the induced secondary e.m.f. under these circumstances can be high enough to present a danger to people s life and equipment insulation Page 45

46 Advantages of Process Bus Improves the flexibility of the protection system. Current circuits can not be easily switched due to open circuit concerns The above is not an issue with process bus, because any changes will only require modifications in the subscription of the protection IEDs receiving the sampled analog values over IEC Page 46

47 SAS Engineering Process Utility Standards Functional Specification Page 47

48 Questions? +41 (41) (310) (412)