Schweitzer Engineering Laboratories SEL-787 - Figure 2.19 SEL-787 Provides Basic Two-Winding Transformer Differential Protection

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2.21

Date Code 20081022 Instruction Manual SEL-787 Relay

Installation

AC/DC Control Connection Diagrams

The basic application of the SEL-787 relay is for a two-winding transformer. The SEL-787 base product offering provides

six current channels that are used to monitor the two transformer windings. Relay contact inputs can be used to monitor

high- and low-side breaker status. Relay contact outputs can be used to trip or close high and low side transformer

breakers.

Refer to Figure 2.23, which illustrates tripping control of the two-power circuit breakers.

Figure 2.19 SEL-787 Provides Basic Two-Winding Transformer Differential Protection

IAW1

IBW1

ICW1

IAW2

IBW2

ICW2

SEL-787 Relay

52-1

52-2

A B C

a b c

200/5 A

138 kV

30 MVA

13.8 kV

2000/5 A

Note: The CT secondary circuit must be grounded in the relay cabinet.

Main Page

Table of Contents3
Appendix A: Firmware and Manual Versions9
Firmware9
Overview13
Settings14
- Overview17
- Overview19
Models, Options, and Accessories26
Applications28
Table 1.1 SEL-787 Serial Port Settings29
Figure 1.1 Response Header29
Figure 1.2 STA Command Response-No Devicenet Communications Card or with EIA-232/EIA-485 Communications Card30
Figure 1.3 STA Command Response-With Devicenet Communications Card30
Definitions30
Appendix D: DNP3 Communications37
Overview37
I/O Configuration38
Figure 2.1 Relay Panel-Mount Dimensions38
Figure 2.2 Slot Allocations for Different Cards39
Table 2.1 Communication Ports40
Table 2.2 Communication Card Interfaces and Connectors41
Table 2.3 Current Card Terminal Allocation41
Table 2.4 Current/Voltage Card Terminal Allocation42
Table 2.5 Four Analog Input/Four Analog Output (4 AI/4 AO) Card Terminal Allocation42
Table 2.6 I/O (3 DI/4 DO/1 AO) Card Terminal Allocation42
Table 2.7 RTD (10 RTD) Card Terminal Allocation43
Table 2.8 Four Digital Input/Four Digital Output (4 DI/4 DO) Card Terminal Allocation43
Table 2.9 Eight Digital Input (8 DI) Card Terminal Allocation44
Figure 2.3 Circuit Board of Analog I/O Board, Showing Jumper Selection45
Figure 2.4 JMP1 through JMP4 Locations on 4 AI/4 AO Board46
Figure 2.5 Current Output Jumpers46
Figure 2.6 Voltage Output Jumpers46
Table 2.10 Jumper Functions and Default Positions47
Figure 2.8 Rear-Panel Connections of Selected Cards48
Rear-Panel Connections49
Figure 2.9 Dual-Fiber, Ethernet, EIA-232 Communication, 3 DI/4 DO/1 AO, and Current/Voltage (1 ACI/3 AVI) Option49
Figure 2.10 Single Copper Ethernet, 8 DI, RTD, and 4 AI/4 AO Option50
Figure 2.11 Devicenet, Fast Hybrid 4 DI/4 DO, and Current/Voltage Option50
Figure 2.12 Control I/O Connections-4 AI/4 AO Option in Slot D and Fiber-Optic Port in Slot B52
Figure 2.13 Control I/O Connections-Internal RTD Option52
AC/DC Control Connection Diagrams53
Figure 2.14 Output OUT103 Relay Output Contact Configuration53
Figure 2.15 OUT103 Contact Fail-Safe and Nonfail-Safe Options53
Figure 2.16 Single-Phase Voltage Connections54
Figure 2.17 Voltage Connections55
Figure 2.18 Typical Current Connections56
Figure 2.19 SEL-787 Provides Basic Two-Winding Transformer Differential Protection57
Figure 2.20 SEL-787 Provides Two-Winding Transformer Differential Protection with REF (Restricted Earth Fault) Protection58
Figure 2.21 SEL-787 Provides Two-Winding Transformer Differential Protection with REF and Voltage-Based Protection59
Figure 2.22 SEL-787 Provides Autotransformer Differential Protection, Including REF Protection60
Figure 2.23 Example DC Connections61
Upgrade Instructions62
Overview63
Table 3.1 SEL Software Solutions63
Setup64
Figure 3.1 Serial Port Communication Dialog Box64
Figure 3.2 Serial Port Communication Parameters Dialog Box64
Terminal65
Figure 3.3 Network Communication Parameters Dialog Box65
Figure 3.4 Tools Menu65
Settings Database Management and Drivers66
Figure 3.5 Device Response to the ID Command66
Settings68
Table 3.3 File/Tools Menus68
Figure 3.6 Selection of Drivers69
Figure 3.7 Update Part Number69
Figure 3.8 New Setting Screen70
Figure 3.9 Expressions Created with Expression Builder71
Event Analysis73
Figure 3.10 Composite Screens for Retrieving Events73
Meter and Control74
Figure 3.11 Saving the Retrieved Event74
Figure 3.12 Device Overview Screen75
Figure 3.13 Control Screen76
Figure 3.14 Remote Operation Selection76
Table 3.4 Help77
Overview79
Application Data80
Table 4.1 Identifier Settings80
Table 4.2 Configurations and Ratings (Phase Cts, Power Transformer)81
Table 4.3 Configurations and Ratings (Optional Neutral CT, Phase PT)82
Basic Protection83
Figure 4.1 Percentage Restraint Differential Characteristic84
Figure 4.2 Winding 1 Compensated Currents85
Figure 4.3 Differential Element (87-1) Quantities85
Figure 4.4 Differential Element Decision Logic87
Table 4.4 Differential Element Settings88
Figure 4.5 Differential Element Harmonic Blocking Logic88
Figure 4.6 Differential Current Alarm Logic Diagram89
Figure 4.7 Winding Connections, Phase Shifts, and Compensation Direction94
Figure 4.8 Example 1 for Wnctc Selection96
Figure 4.10 REF Enable Logic105
Figure 4.11 REF Directional Element106
Figure 4.12 REF Protection Output (Extremely Inverse-Time O107
Table 4.5 Restricted Earth Fault Settings107
Figure 4.13 REF Function, REF1POL Setting Guide108
Table 4.6 Winding N Maximum Phase Overcurrent Settings (N = 1 or 2)109
Figure 4.14 Instantaneous Overcurrent Element Logic110
Table 4.7 Winding N Residual Overcurrent Settings (N = 1, 2)111
Table 4.8 Winding N Negative-Sequence Overcurrent Settings (N = 1 or 2)111
Figure 4.15 Maximum Phase Time-Overcurrent Elements 51P1T and 51P2T112
Table 4.9 Winding N Maximum Phase Time-Overcurrent (N = 1 or 2)112
Table 4.10 Residual Time-Overcurrent Settings (N = 1 or 2)112
Figure 4.16 Residual Time-Overcurrent Elements 51G1T and 51G2T113
Table 4.11 Winding N Negative-Sequence Time-Overcurrent Settings (N = 1, 2)113
Figure 4.17 Negative-Sequence Time-Overcurrent Element 51Q1T and 51Q2T114
Table 4.12 Neutral Overcurrent Settings114
Table 4.13 Neutral Time-Overcurrent Settings114
Figure 4.18 Neutral Time-Overcurrent Elements 51N1T and 51N2T115
Table 4.14 Equations Associated with U.S. Curves116
Table 4.15 Equations Associated with IEC Curves116
Figure 4.19 U.S. Moderately Inverse Curve: U1117
Figure 4.20 U.S. Inverse Curve: U2118
Figure 4.21 U.S. very Inverse Curve: U3119
Figure 4.22 U.S. Extremely Inverse Curve: U4120
Figure 4.23 U.S. Short-Time Inverse Curve: U5121
Figure 4.24 I.E.C. Class a Curve (Standard Inverse): C1122
Figure 4.25 I.E.C. Class B Curve (very Inverse): C2123
Figure 4.26 I.E.C. Class C Curve (Extremely Inverse): C3124
Figure 4.27 I.E.C. Long-Time Inverse Curve: C4125
Figure 4.28 I.E.C. Short-Time Inverse Curve: C5126
RTD-Based Protection127
Table 4.16 RTD Settings127
Table 4.17 RTD Resistance Versus Temperature128
Voltage-Based Protection129
Table 4.18 Undervoltage Settings129
Table 4.19 Overvoltage Settings129
Figure 4.30 Overvoltage Element Logic130
Figure 4.31 Overvoltage Element Logic131
Figure 4.32 Dual-Level Volts/Hertz Time-Delay Characteristic 24CCS132
Figure 4.33 Composite Inverse/Definite-Time Overexcitation Characteristic, 24CCS132
Table 4.20 Volts Per Hertz Settings133
Figure 4.35 Volts/Hertz Inverse-Time Characteristic, 24IC135
Figure 4.36 Volts/Hertz Inverse-Time Characteristic, 24IC135
Figure 4.37 Three-Phase Power Elements Logic137
Table 4.21 Power Element Settings137
Figure 4.38 Power Elements Operation in the Real/Reactive Power Plane138
Figure 4.39 Over- and Underfrequency Element Logic139
Table 4.22 Frequency Settings139
Demand Metering141
Figure 4.40 Loss-Of-Potential (LOP) Logic141
Figure 4.41 Demand Current Logic Outputs142
Table 4.23 Demand Meter Settings142
Figure 4.42 Response of Thermal and Rolling Demand Meters to a Step Input143
Figure 4.43 Voltage V S Applied to Series RC Circuit144
Table 4.24 Trip/Close Logic Settings146
Figure 4.44 Trip Logic147
Figure 4.45 Close Logic149
Logic Settings (SET L Command)150
Table 4.25 Enable Settings150
Figure 4.47 Logic Diagram of a Latch Switch151
Table 4.26 Latch Bits Equation Settings151
Figure 4.49 Result of Falling-Edge Operator on a Deasserting Input155
Table 4.30 Counter Input/Output Description157
Figure 4.52 Example of the Effects of the Input Precedence158
Table 4.31 Order of Precedence of the Control Inputs158
Table 4.32 Control Output Equations and Contact Behavior Settings159
Table 4.33 General Global Settings160
Figure 4.53 Phase Rotation Setting161
Table 4.34 Setting Group Selection162
Table 4.35 Breaker Failure Setting162
Figure 4.55 Analog Input Card Adaptive Name163
Table 4.36 Summary of Steps164
Figure 4.56 Settings to Configure Input 1 as a 4-20 Ma Transducer Measuring Temperatures166
Table 4.37 Analog Input Card in Slot 3166
Figure 4.57 Analog Output Number Allocation167
Table 4.38 Output Setting for a Card in Slot 3167
Figure 4.58 Analog Output Settings168
Figure 4.59 DC Mode Processing168
Figure 4.61 Timing Diagram for Debounce Timer Operation When Operating in AC Mode169
Figure 4.60 AC Mode Processing169
Table 4.39 Slot C Input Debounce Settings169
Table 4.40 Data Reset Setting170
Table 4.41 Setting Change Disable Setting170
Port Settings (SET P Command)170
Table 4.43 Ethernet Port Settings171
Table 4.44 Fiber-Optic Serial Port Settings172
Table 4.45 Rear-Panel Serial Port Settings172
Table 4.46 Rear-Panel Serial Port (EIA-232/EIA-485) Settings172
Table 4.47 Rear-Panel Devicenet Port Settings173
Table 4.48 Display Point and Local Bit Default Settings174
Table 4.49 Front-Panel General Settings174
Front-Panel Settings (SET F Command)174
Table 4.50 LCD Display Point Settings175
Table 4.51 Settings that Always, Never, or Conditionally Hide a Display Point176
Table 4.52 Entries for the Four Strings176
Figure 4.62 Display Point Settings177
Figure 4.63 Front-Panel Display-Both HV and LV Breakers Open177
Figure 4.64 Front-Panel Display-HV Breaker Closed, LV Breaker Open177
Figure 4.65 Front-Panel Display-Both HV and LV Breakers Closed177
Figure 4.66 Front-Panel Display-HV Breaker Open, LV Breaker Closed178
Figure 4.67 Front-Panel Display-HV Breaker Open, LV Breaker Closed178
Figure 4.68 Front-Panel Display for a Binary Entry in the Name String Only178
Table 4.53 Binary Entry in the Name String Only178
Figure 4.69 Front-Panel Display for an Analog Entry in the Name String Only179
Table 4.54 Analog Entry in the Name String Only179
Table 4.55 Entry in the Name String and the Alias Strings179
Figure 4.70 Front-Panel Display for an Entry in (A) Boolean Name and Alias Strings and (B) Analog Name and User Text and Formatting Strings180
Figure 4.71 Front-Panel Display for an Entry in (A) Boolean Name and Alias Strings and (B) Analog Name, User Text and Formatting Strings, and Engineering Units180
Table 4.56 Example Settings and Displays180
Figure 4.72 Adding Temperature Measurement Display Points181
Figure 4.74 Adding Two Local Bits182
Table 4.57 Target LED Settings183
Table 4.58 Pushbutton LED Settings184
Table 4.59 Auto-Removal Settings184
Report Settings (SET R Command)184
Table 4.60 SER Trigger Settings185
Table 4.61 Enable Alias Settings185
Table 4.62 SET R SER Alias Settings186
Table 4.63 Event Report Settings186
Table 4.64 Load Profile Settings186
Table 4.65 DNP Map Settings187
Modbus Map Settings (SET M Command)188
Table 4.66 User Map Register Settings188
Overview189
Figure 5.1 Complex Power Measurement Conventions190
Metering191
Table 5.1 Measured Fundamental Meter Values191
Figure 5.2 METER Command Report with Voltage Option192
Table 5.2 Measured Differential Meter Values192
Figure 5.3 METER DIF (Differential) Command Report193
Figure 5.4 METER T Command Report with Rtds193
Table 5.3 Thermal Meter Values193
Table 5.4 RTD Input Status Messages193
Figure 5.5 METER E Command Report194
Figure 5.6 METER RE Command Report194
Table 5.5 Maximum/Minimum Meter Values194
Figure 5.7 METER M Command Report195
Figure 5.8 METER RM Command Response195
Figure 5.9 MET MV Command Report196
Figure 5.10 METER RMS Command Report196
Table 5.6 RMS Meter Values196
Figure 5.11 METER AI Command Report197
Table 5.7 Demand Values197
Figure 5.12 METER dem Command Report198
Figure 5.13 METER P Command Report198
Figure 5.14 METER H Command Report198
Table 5.8 Measured Harmonic Meter Values198
Load Profiling199
Table 5.9 Synchrophasor Measured Values199
Through-Fault Event Monitoring200
Figure 5.15 LDP Command Report200
Figure 5.16 Transformer Bank Subjected to through Fault200
Figure 5.17 Category IV Transformers Through-Fault Protection Curves201
Table 5.10 Through-Fault Element Settings202
Figure 5.18 Through-Fault Diagram203
Figure 5.19 Result of the TFE Command204
Figure 5.20 Preload the Values of the Accumulated Data205
Table 5.11 Through-Faults Events Report Messages205
Appendix I: Mirroredbitscommunications207
Overview207
Table 6.1 Methods of Accessing Settings207
View/Change Settings with Front Panel208
Figure 6.1 Front-Panel Setting Entry Example209
View/Change Settings over Communications Port210
Table 6.2 SHOW Command Options210
Table 6.3 SET Command Options210
Table 6.4 SET Command Editing Keystrokes211
Table 6.5 SET Command Format211
Table 6.6 Setting Interdependency Error Messages212
Appendix J: Relay Word Bits281
Overview281
Table 7.1 SEL-787 Communications Port Interfaces281
Figure 7.1 EIA-232 DB-9 Connector Pin Numbers284
Figure 7.2 SEL Cable C234A-SEL-787 to DTE Device285
Figure 7.3 SEL Cable C227A-SEL-787 to DTE Device285
Table 7.2 EIA-232/EIA-485 Serial Port Pin Functions285
Figure 7.4 SEL Cable C222-SEL-787 to Modem286
Figure 7.5 SEL Cable C272A-SEL-787 to SEL Communications Processor (Without IRIG-B Signal)286
Figure 7.6 SEL Cable C273A-SEL-787 to SEL Communications Processor (with IRIG-B Signal)286
Communications Protocols287
Figure 7.7 SEL Cable C387-SEL-787 to SEL-3010287
Table 7.3 Protocols Supported on the Various Ports287
SEL ASCII Protocol and Commands290
Table 7.4 Serial Port Automatic Messages291
Table 7.5 Command Response Header Definitions292
Table 7.6 Access Commands293
Table 7.7 ANALOG Command295
Table 7.8 ANALOG Command Format295
Table 7.9 COM Command297
Table 7.10 CONTROL Command298
Table 7.11 Three Remote Bit States298
Table 7.12 COPY Command298
Table 7.13 COUNTER Command298
Figure 7.8 Ethernet Port (PORT 1) Status Report299
Figure 7.9 Non-Redundant Port Response299
Table 7.14 Date Command299
Table 7.15 EVENT Command (Event Reports)300
Table 7.16 EVENT Command Format300
Table 7.17 FILE Command300
Table 7.18 GOOSE Command Variants301
Table 7.19 GROUP Command302
Figure 7.10 GOOSE Command Response302
Table 7.21 HISTORY Command303
Table 7.22 IDENTIFICATION Command303
Table 7.23 IRI Command303
Table 7.24 LDP Commands304
Table 7.25 LDP Command Parameters304
Table 7.26 L_D Command (Load Firmware)305
Table 7.28 Meter Command306
Table 7.29 Meter Command Parameters306
Table 7.30 Meter Class306
Table 7.31 PASSWORD Command307
Table 7.32 PAS Command Format307
Table 7.33 Factory Default Passwords for Access Levels 1 and 2307
Table 7.34 Valid Password Characters308
Figure 7.11 PING Command Response308
Table 7.35 PUL Outnnn Command309
Table 7.36 QUIT Command309
Table 7.37 R_S Command (Restore Factory Defaults)309
Table 7.38 SER Command (Sequential Events Recorder Report)309
Table 7.39 SER Command Format310
Table 7.40 SER D Command310
Table 7.41 SET Command (Change Settings)310
Table 7.42 SET Command Format311
Table 7.43 SET Command Editing Keystrokes311
Table 7.44 SHOW Command (Show/View Settings)312
Table 7.45 SHOW Command Format312
Figure 7.12 SHOW Command Example313
Table 7.46 STATUS Command (Relay Self-Test Status)314
Table 7.47 STATUS Command Report and Definitions314
Figure 7.13 STATUS Command Example315
Figure 7.14 Typical Relay Output for STATUS S Command315
Table 7.48 SUMMARY Command316
Table 7.49 TARGET Command (Display Relay Word Bit Status)316
Table 7.50 TARGET Command Format316
Table 7.51 Front-Panel Leds and the TAR 0 Command316
Table 7.52 TIME Command (View/Change Time)317
Table 7.53 TRIGGER Command (Trigger Event Report)318
Overview319
Human-Machine Interface320
Figure 8.1 Front-Panel Overview320
Table 8.1 Front-Panel Automatic Messages321
Figure 8.2 Access Level Security Padlock Symbol321
Figure 8.4 Front-Panel Pushbuttons322
Figure 8.3 Password Entry Screen322
Figure 8.5 Main Menu323
Table 8.2 Front-Panel Pushbutton Functions323
Figure 8.6 MAIN Menu and METER Submenu324
Figure 8.7 METER Menu and ENERGY Submenu324
Figure 8.8 Relay Response When Demand, Peak Demand, Energy, or Max/Min Metering Is Reset324
Figure 8.9 Relay Response When no Analog Cards Are Installed324
Figure 8.10 Relay Response When no Math Variables Enabled325
Figure 8.11 MAIN Menu and EVENTS Submenu325
Figure 8.12 EVENTS Menu and DISPLAY Submenu325
Figure 8.13 Relay Response When no Event Data Available325
Figure 8.14 Relay Response When Events Are Cleared325
Figure 8.15 MAIN Menu and TARGETS Submenu326
Figure 8.16 TARGETS Menu Navigation326
Figure 8.17 MAIN Menu and CONTROL Submenu326
Figure 8.18 CONTROL Menu and OUTPUTS Submenu327
Figure 8.19 CONTROL Menu and LOCAL BITS Submenu327
Figure 8.20 MAIN Menu and SET/SHOW Submenu328
Figure 8.21 SET/SHOW Menu329
Operation and Target Leds330
Figure 8.22 MAIN Menu and Status Submenu330
Figure 8.23 Factory Default Front-Panel Leds330
Figure 8.24 Target Reset Pushbutton331
Table 8.3 Possible Warning Conditions (Flashing TRIP LED)331
Figure 8.25 Operator Control Pushbuttons and Leds332
Table 8.4 SEL-787 Front-Panel Operator Control Functions333
Appendix G: Devicenet Communications335
Overview335
Event Reporting336
Figure 9.1 Example Event Summary337
Table 9.1 Event Types338
Figure 9.2 Sample Event History339
Table 9.2 Analog Event Report Columns Definitions341
Figure 9.3 Example Standard 15-Cycle Analog Event Report 1/4-Cycle Resolution345
Figure 9.4 Derivation of Analog Event Report Current Values and RMS Current Values from346
Figure 9.5 Derivation of Phasor RMS Current Values from Event Report Current Values347
Table 9.3 Digital Event Report Column Definitions348
Figure 9.6 Example Standard 15-Cycle Digital Event Report (EVE D Command)352
Table 9.4 Differential Event Report Column Definitions for Analog Quantities352
Table 9.5 Differential Event Report Digital Column Definitions for Protection, Control and I/O Elements353
Sequential Events Recorder (SER) Report355
Figure 9.7 Example Standard 15-Cycle Differential Event Report (EVE DIF1 Command)355
Figure 9.8 Example Sequential Events Recorder (SER) Event Report356
Appendix E: Modbus RTU Communications357
Overview357
Figure 10.1 Low-Level Test Interface (J2 and J3)358
Table 10.1 Resultant Scale Factors for Inputs358
Commissioning Tests359
Figure 10.2 Three-Phase Wye AC Connections361
Figure 10.3 Three-Phase Open-Delta AC Connections361
Table 10.2 Serial Port Commands that Clear Relay Data Buffers362
Figure 10.4 CTR1 Current Source Connections363
Figure 10.5 CTR2 Current Source Connections364
Table 10.3 CTR1 Phase Current Measuring Accuracy364
Table 10.4 CTR2 Phase Current Measuring Accuracy364
Figure 10.6 Wye Voltage Source Connections365
Table 10.5 Power Quantity Accuracy-Wye Voltages365
Figure 10.7 Delta Voltage Source Connections366
Table 10.6 Power Quantity Accuracy-Delta Voltages366
Periodic Tests (Routine Maintenance)367
- Table 10.8 Relay Self-Tests368
- Table A.1 Firmware Revision History371
- Table A.2 Instruction Manual Revision History372
Table 10.7 Periodic Relay Checks367
Appendix C: SEL Communications Processors377
SEL Communications Protocols377
- Table C.2 Compressed ASCII Commands378
- Figure C.1 SEL Communications Processor Star Integration Network379
- Table C.3 SEL Communications Processors Protocol Interfaces380
Figure C.2 Multitiered SEL Communications Processor Architecture380
SEL Communications Processor and Relay Architecture381
- Figure C.3 Enhancing Multidrop Networks with SEL Communications Processors382
- Table C.4 SEL Communications Processor Port 1 Settings383
- Table C.5 SEL Communications Processor Data Collection Automessages383
Overview389
- Table D.2 Selected DNP3 Function Codes391
- Table D.3 DNP3 Access Methods392
- Table D.4 TCP/UDP Selection Guidelines394
- Table D.5 DNP3 Access Methods394
DNP3 in the SEL-787394
- Figure D.2 Message Transmission Timing396
- Table D.6 SEL-787 Event Buffer Capacity397
- Table D.7 Port DNP3 Protocol Settings398
- Table D.8 Serial Port DNP3 Modem Settings400
- Figure D.3 Sample Response to SHO DNP Command401
- Figure D.4 Port MAP Command402
- Table D.9 Sample Custom DNP3 AI Map403
- Figure D.5 Sample Custom DNP3 AI Map Settings404
- Figure D.8 Sample Custom DNP3 BO Map Settings406
- Figure D.9 Binary Output Map Entry in AC SEL ERATOR Quickset Software406
- Table D.10 SEL-787 DNP3 Device Profile407
DNP3 Documentation407
- Table D.11 SEL-787 DNP Object List408
- Table D.12 DNP3 Reference Data Map412
- Table D.13 DNP3 Default Data Map413
- Table D.14 Example Object 12 Trip/Close or Code Selection Operation414
Appendix B: Firmware Upgrade Instructions415
Overview415
- Table E.1 Modbus Query Fields416
- Table E.2 SEL-787 Modbus Function Codes416
Communications Protocol416
- Table E.3 SEL-787 Modbus Exception Codes417
- Table E.4 01H Read Discrete Output Coil Status Command417
- Table E.5 Responses to 01H Read Discrete Output Coil Query Errors418
- Table E.6 02H Read Input Status Command418
- Table E.7 02H SEL-787 Inputs419
- Table E.8 Responses to 02H Read Input Query Errors422
- Table E.9 03H Read Holding Register Command422
- Table E.10 Responses to 03H Read Holding Register Query Errors422
- Table E.11 04H Read Input Register Command423
- Table E.12 Responses to 04H Read Input Register Query Errors423
- Table E.13 05H Force Single Coil Command423
- Table E.14 01H, 05H SEL-787 Output423
- Table E.15 Responses to 05H Force Single Coil Query Errors426
- Table E.16 06H Preset Single Register Command426
- Table E.17 Responses to 06H Preset Single Register Query Errors426
- Table E.18 10H Preset Multiple Registers Command426
- Table E.19 10H Preset Multiple Registers Query Error Messages427
- Table E.20 60H Read Parameter Information Command427
- Table E.21 60H Read Parameter Descriptor Field Definition428
- Table E.22 60H Read Parameter Conversion Field Definition428
- Table E.23 Responses to 60H Read Parameter Information Query Errors428
- Table E.24 61H Read Parameter Text Command429
- Table E.25 61H Read Parameter Text Query Error Messages429
- Table E.26 62H Read Enumeration Text Command429
- Table E.27 61H Read Parameter Enumeration Text Query Error Messages430
- Table E.28 7Dh Encapsulated Packet with Control Command430
- Table E.29 7Dh Encapsulated Packet Query Errors430
- Table E.30 7Eh NOP Command431
- Table E.31 Modbus Register Labels for Use with SET M Command433
- Table E.32 Modbus Register Map436
Appendix F: IEC 61850 Communications475
Features475
- Table F.1 IEC 61850 Document Set476
Introduction to IEC 61850476
IEC 61850 Operation477
- Table F.2 Example IEC 61850 Descriptor Components478
- Table F.3 SEL-787 Logical Devices478
- Figure F.1 SEL-787 Predefined Reports480
- Table F.4 Buffered Report Control Block Client Access480
- Table F.5 Unbuffered Report Control Block Client Access481
- Figure F.2 SEL-787 Datasets482
- Figure F.3 Goose Quality483
- Table F.6 IEC 61850 Settings485
IEC 61850 Configuration485
- Table F.7 Metering and Measurement Logical Nodes486
- Table F.8 Thermal Metering Data486
Logical Node Extensions486
- Table F.9 MSTA Class487
- Table F.10 Logical Device: PRO (Protection)487
Logical Nodes487
- Table F.11 Logical Device: MET (Metering)490
- Table F.12 Logical Device: con (Control)492
- Table F.13 Logical Device: ANN (Annunciation)493
- Table F.14 PICS for A-Profile Support494
- Table F.15 PICS for T-Profile Support494
- Table F.16 MMS Service Supported Conformance494
Protocol Implementation Conformance Statement494
- Table F.17 MMS Parameter CBB497
- Table F.18 Alternate Access Selection Conformance Statement497
- Table F.19 Variableaccessspecification Conformance Statement497
- Table F.20 Variablespecification Conformance Statement498
- Table F.21 Read Conformance Statement498
- Table F.22 Getvariableaccessattributes Conformance Statement498
- Table F.23 Definenamedvariablelist Conformance Statement498
- Table F.24 Getnamedvariablelistattributes Conformance Statement499
- Table F.25 Deletenamedvariablelist499
- Table F.26 GOOSE Conformance499
- Table F.27 ACSI Basic Conformance Statement500
- Table F.28 ACSI Models Conformance Statement500
ACSI Conformance Statements500
- Table F.29 ACSI Services Conformance Statement502
Figure G.1 Devicenet Card Component Overview505
Electronic Data Sheet507
Introduction509
Appendix H: Synchrophasors510
Figure H.1 Phase Reference510
Synchrophasor Measurement510
- Figure H.2 Waveform at Relay Terminals May Have a Phase Shift511
- Figure H.3 Correction of Measured Phase Angle511
- Table H.1 PMU Settings in the SEL-787 for C37.118 Protocol in Global Settings512
Settings for Synchrophasors512
- Table H.2 SEL-787 Serial Port Settings for Synchrophasors513
- Table H.3 Synchrophasor Order in Data Stream (Voltages and Currents)515
- Table H.4 User-Defined Analog Values Selected by the NUMANA Setting515
- Table H.5 User-Defined Digital Status Words Selected by the NUMDSW Setting516
- Table H.6 PM Trigger Reason Bits-IEEE C37.118 Assignments516
Synchrophasor Relay Word Bits517
- Table H.7 Synchrophasor Trigger Relay Word Bits518
- Table H.8 Time Synchronization Relay Word Bits518
View Synchrophasors Using the MET PM Command518
Figure H.4 Sample MET PM Command Response519
C37.118 Synchrophasor Protocol519
- Table H.9 Size of a C37.118 Synchrophasor Message520
- Table H.10 Serial Port Bandwidth for Synchrophasors (in Bytes)520
- Table I.4 MIRRORED BITS Communications Message Transmission Period527
- Table I.5 MIRRORED BITS Protocol Settings527
- Table J.1 SEL-787 Relay Word Bits529
- Table J.2 Relay Word Bit Definitions for the SEL-787532
- Table K.1 Analog Quantities542
Figure 4.51 Counter553
Figure 4.54 Breaker Failure Logic553
Figure 4.73 Rotating Display554

Schweitzer Engineering Laboratories SEL-787 - Figure 2.19 SEL-787 Provides Basic Two-Winding Transformer Differential Protection

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