Trends in Station Bus and Process Bus Communications Via the Several IEC Protocols. Schweitzer Engineering Laboratories, Inc.

Transcription

1 Trends in Station Bus and Process Bus Communications Via the Several IEC Protocols Schweitzer Engineering Laboratories, Inc. Copyright SEL 2009

2 Reduce Cost / Complexity of Field Wiring

3 Yard House Physical Equipment Terminal Block Marshalling Cabinet Terminal Block / Test Plug Relay 44 Wires 44 Wires 44 Wires 44 Wires 1. Traditional Topology

4 Physical Equipment Yard 44 Wires Terminal Block / 44 Wires Test Plug Relay 2. Relays in Yard

5 Physical Equipment Yard 44 Wires Terminal 24 Wires Block Marshalling Cabinet 24 Wires Terminal Block / Test Plug House 24 Wires Relay 20 Wires I/O Transceiver 1 Cable 3. I/O Modules in Yard

6 Yard House Physical Equipment Terminal Block / Test Plug Merging Unit Switch or Processor Relay 44 Wires 44 Wires 1 Cable 1 Cable 4. Merging Unit Topology

7 Merging Unit Concept Aggregates Data Onto Digital Link la, b, c (meas) la, b, c, neutral (prot) Va, b, c, neutral, busbar Clock Input Discrete Status and Alarm Merging Unit Power Supply Digital Communication

8 Discrete I/O, Programmable Automation Controllers, and RTDs

9 Multiple Merging Unit Payloads Discrete only: DMU Measured analog plus discrete: MMU Temperatures: TMU Synchrophasors: PMU Smart breaker: BMU Sampled (raw) analog plus discrete: MU

10 Process Bus Protocols Move Analog Values, Discrete Status, and Alarms SMART Protocol metering, targets, equipment data, temperatures, and synchrophasors IEC GOOSE, Sampled Values (SV) IEEE C synchrophasors IEEE : precision time synchronization (in progress via PSRC)

11 SEL Devices Publish and Subscribe Publications Subscriptions MIRRORED BITS DMU IEC GSE DMU MIRRORED BITS DMU IEC GSE DMU Fast Message MMU IEC GSE MMU IEC GSE MMU Fast Message PMU IEC BMU Fast Message PMU IEC BMU IEC MU Fast Message TMU IEC MU IEEE C PMU IEEE C PMU

12 SEL Provides Integration Choices Nonrouted Architecture Routed Architecture

13 Focus on IEC Protocols Reporting, polling, and control via client server (MMS) Control and unsolicited updates via peer to peer (GOOSE or SV) Primary equipment data acquisition peer to peer (GOOSE or SV)

14 Switched Ethernet Station and Process Bus From Beginning Ethernet Ethernet

15 Process Bus Shares Data Among IEDs and Smart Sensors Bay Controller Relay A Relay B Process Bus Modern Switchgear Modern CT / VTs

16 SEL Approach Use Global, Standardized Methods Offer choice of installation method / location Provide highest protection reliability Continue lowest system / installation cost Use existing protection Design for interoperability Provide system-wide protection and synchrophasors

17 Relay-Based Process Bus System Process Level Bay Level Station Level Instrument Transfer Breaker Merging Unit 50, 51, 21 Breaker Controller Time Source Ethernet Switch 87 BFR HMI Ethernet Switch Station Controller

18 Advantages of SEL Approach Primary protection continues if communications fail Minimum number of devices Relay receives and transmits IEC Fixed-rate sampling Absolute time reference per IEEE 1588 Share analog data among devices

19 Flex Connect Choose From Several Standard Connections Reduce wiring Reuse data Recycle information

20 Choose Any Installation Method: Interoperable Multivendor Relays in control building Relays in field termination kiosks

21 Flex Connect: Flexible Data Acquisition and Control Multivendor SELECT Direct: standard, hard-wired copper conductors SELECT Fiber: digital communications over standard, fiber-optic cable Hybrid Analog via SELECT Direct Discrete via SELECT Fiber

22 SELECT Direct Connectorized or Conventional Copper Conductor Terminations Choose from copper off the spool or premade harnesses

23 SELECT Fiber Digital Communication Over Standard Fiber-Optic Cable Choose fiber off the spool or premade cables

24 Hybrid Digital Communication Via Standard Fiber Plus Conventional Copper Conductors Copper off the spool Premade harnesses Choose from: Fiber off the spool Premade cables SEL Confidential

25 Compare Four-Feeder Substation SAS

26 Communications and control building (CCB) Communications and control kiosk (CCK) Field termination cabinet (FTC) and kiosk (FTK) Copper conductors (CCs) Fiber connectors (F)

27 Process Bus SELECT Direct Hard-Wire 72 CC analog 60 CC discrete Station Bus SELECT Fiber

28 Fiber Process Bus FTK SEL MU Publish / subscribe SV and GOOSE Hybrid Process Bus FTK SEL DMU Publish / subscribe GOOSE Analogs via CCs

29 Process Bus Hybrid SELECT Fiber Star, 6 F digital SELECT Direct, 72 CC analog Station Bus SELECT Fiber

30 Active Redundant Network: Dual Ethernet Failover IED Controls Data Flow Survive loss of any switch, cable, relay Network

31 Process Bus Hybrid SELECT Fiber Dual Star, 12 F digital SELECT Direct, 72 CC analog Station Bus SELECT Fiber

32 Passive Redundant Network: Internal Ethernet Switches Switch Controls Data Flow Survive loss of any switch, cable, relay Network Managed Ether Switch Managed Ether Switch

33 Process Bus Hybrid SELECT Fiber Ring, 7 F digital SELECT Direct, 72 CC analog Station Bus SELECT Fiber

34 Merging Units Support SV and GOOSE But Disable Local Protection

35 Process Bus SELECT Fiber Star, 6 F Station Bus SELECT Fiber

36 Process Bus SELECT Fiber Dual Star, 12 F Station Bus SELECT Fiber

37 Fiber Optics Replace Copper

38 Process Bus SELECT Fiber Star, 7 F Unused Station Bus SELECT Fiber

39 Process Bus SELECT Fiber Star, 7 F Station Bus SELECT Fiber

40 Merging Unit, Disable Local Protection, Instrument Transfer But Maintain Breaker Control Process Level Merging Unit Bay/Unit Level Station Level Breaker Instrument Transfer Breaker Breaker Controller Merging Unit Breaker Controller Ethernet Switch Rev. Meter 87 50, 51, 21 50, 51, 21 50, 51, 21 50, 51, 21 Time Source Ethernet Switch Station Controller

41 Merging Unit Plus Local Protection Supporting System Protection Over LAN Instrument Transfer Process Level Merging Unit Bay/Unit Level Station Level Breaker Instrument Transfer 50, 51, 21 Breaker Controller Merging Unit Ethernet Switch 87 Time Source Ethernet Switch Station Controller Breaker 50, 51, 21 Breaker Controller Revenue Meter

42 Merging Unit With I/O Process Level Bay/Unit Level Station Level Time Source Instrument Transf. Merging Unit Ethernet Switch Relay Ethernet Switch Station Controller Breaker Breaker Controller Switched System MTBF = 300 / 4 = 75 Years

43 Merging Unit With Intelligence Performing Local Protection Process Level Bay/Unit Level Station Level Time Source Instrument Transf. Merging Unit Ethernet Switch Station Controller Relay Breaker Breaker Controller Revenue Meter System MTBF = 300 Years

44 Merging Unit Plus Local Protection Supporting System Protection Over LAN Process Level Bay/Unit Level Station Level 2 nd Merging Unit for 50, 51, 21, 87 Time Source Instrument Transf. Merging Unit Ethernet Switch Ethernet Switch Station Controller 50, 51, Breaker Breaker Controller Revenue Meter Localized Protection MTBF = 300 Years Merging Unit Prot. MTBF = 300/4 = 75 Years

45 Replace Copper With Fiber, Monitor Health of Signal, Reduce Footprint / Cost

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