ABB Relion 670 series User manual

—
RELION® 670 SERIES
Generator protection REG670
Version 2.1ANSI
Technical manual

Document ID: 1MRK 502 066-UUS
Issued: March 2019
Revision: B
Product version: 2.1
© Copyright 2016 ABB. All rights reserved

Copyright
This document and parts thereof must not be reproduced or copied without written permission
from ABB, and the contents thereof must not be imparted to a third party, nor used for any
unauthorized purpose.
The software and hardware described in this document is furnished under a license and may be
used or disclosed only in accordance with the terms of such license.
This product includes software developed by the OpenSSL Project for use in the OpenSSL Toolkit.
(http://www.openssl.org/) This product includes cryptographic software written/developed by:
Eric Young ([email protected]) and Tim Hudson ([email protected]).
Trademarks
ABB and Relion are registered trademarks of the ABB Group. All other brand or product names
mentioned in this document may be trademarks or registered trademarks of their respective
holders.
Warranty
Please inquire about the terms of warranty from your nearest ABB representative.

Disclaimer
The data, examples and diagrams in this manual are included solely for the concept or product
description and are not to be deemed as a statement of guaranteed properties. All persons
responsible for applying the equipment addressed in this manual must satisfy themselves that
each intended application is suitable and acceptable, including that any applicable safety or other
operational requirements are complied with. In particular, any risks in applications where a system
failure and/or product failure would create a risk for harm to property or persons (including but
not limited to personal injuries or death) shall be the sole responsibility of the person or entity
applying the equipment, and those so responsible are hereby requested to ensure that all
measures are taken to exclude or mitigate such risks.
This document has been carefully checked by ABB but deviations cannot be completely ruled out.
In case any errors are detected, the reader is kindly requested to notify the manufacturer. Other
than under explicit contractual commitments, in no event shall ABB be responsible or liable for any
loss or damage resulting from the use of this manual or the application of the equipment.

Conformity
This product complies with the directive of the Council of the European Communities on the
approximation of the laws of the Member States relating to electromagnetic compatibility (EMC
Directive 2004/108/EC) and concerning electrical equipment for use within specified voltage
limits (Low-voltage directive 2006/95/EC). This conformity is the result of tests conducted by ABB
in accordance with the product standard EN 60255-26 for the EMC directive, and with the product
standards EN 60255-1 and EN 60255-27 for the low voltage directive. The product is designed in
accordance with the international standards of the IEC 60255 series and ANSI C37.90.

Table of contents
Section 1 Introduction............................................................................................................43
1.1 This manual..............................................................................................................................................43
1.2 Intended audience..................................................................................................................................43
1.3 Product documentation........................................................................................................................44
1.3.1 Product documentation set.............................................................................................................44
1.3.2 Document revision history...............................................................................................................45
1.3.3 Related documents............................................................................................................................45
1.4 Document symbols and conventions.................................................................................................46
1.4.1 Symbols................................................................................................................................................46
1.4.2 Document conventions.....................................................................................................................47
1.5 IEC61850 edition 1 / edition 2 mapping............................................................................................ 48
Section 2 Available functions................................................................................................ 57
2.1 Main protection functions.................................................................................................................... 57
2.2 Back-up protection functions..............................................................................................................58
2.3 Control and monitoring functions......................................................................................................59
2.4 Communication...................................................................................................................................... 63
2.5 Basic IED functions................................................................................................................................ 65
Section 3 Analog inputs......................................................................................................... 67
3.1 Introduction.............................................................................................................................................67
3.2 Function block.........................................................................................................................................67
3.3 Signals.......................................................................................................................................................67
3.4 Settings.................................................................................................................................................... 70
3.5 Monitored data........................................................................................................................................77
3.6 Operation principle................................................................................................................................ 78
3.7 Technical data......................................................................................................................................... 79
Section 4 Binary input and output modules........................................................................ 81
4.1 Binary input..............................................................................................................................................81
4.1.1 Binary input debounce filter.............................................................................................................81
4.1.2 Oscillation filter.................................................................................................................................. 81
4.1.3 Settings................................................................................................................................................ 81
4.1.3.1 Setting parameters for binary input modules.......................................................................... 81
4.1.3.2 Setting parameters for binary input/output module............................................................. 82
Section 5 Local Human-Machine-Interface LHMI ............................................................... 83
5.1 Local HMI screen behaviour..................................................................................................................83
5.1.1 Identification.......................................................................................................................................83
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5.1.2 Settings................................................................................................................................................83
5.2 Local HMI signals....................................................................................................................................83
5.2.1 Identification.......................................................................................................................................83
5.2.2 Function block.................................................................................................................................... 84
5.2.3 Signals..................................................................................................................................................84
5.3 Basic part for LED indication module................................................................................................ 84
5.3.1 Identification...................................................................................................................................... 84
5.3.2 Function block.................................................................................................................................... 85
5.3.3 Signals.................................................................................................................................................. 85
5.3.4 Settings................................................................................................................................................86
5.4 LCD part for HMI function keys control module.............................................................................. 86
5.4.1 Identification...................................................................................................................................... 86
5.4.2 Function block.................................................................................................................................... 86
5.4.3 Signals.................................................................................................................................................. 87
5.4.4 Settings................................................................................................................................................87
5.5 Operation principle................................................................................................................................ 88
5.5.1 Local HMI............................................................................................................................................. 88
5.5.1.1 Keypad.............................................................................................................................................. 89
5.5.1.2 Display............................................................................................................................................... 91
5.5.1.3 LEDs...................................................................................................................................................93
5.5.2 LED configuration alternatives....................................................................................................... 94
5.5.2.1 Functionality ...................................................................................................................................94
5.5.2.2 Status LEDs......................................................................................................................................94
5.5.2.3 Indication LEDs............................................................................................................................... 95
5.5.3 Function keys.................................................................................................................................... 102
5.5.3.1 Functionality ................................................................................................................................. 102
5.5.3.2 Operation principle.......................................................................................................................102
Section 6 Differential protection........................................................................................105
6.1 Transformer differential protection T2WPDIF and T3WPDIF (87T)............................................105
6.1.1 Identification.....................................................................................................................................105
6.1.2 Functionality .................................................................................................................................... 105
6.1.3 Function block.................................................................................................................................. 108
6.1.4 Signals................................................................................................................................................ 109
6.1.5 Settings...............................................................................................................................................112
6.1.6 Monitored data..................................................................................................................................117
6.1.7 Operation principle.......................................................................................................................... 118
6.1.7.1 Function calculation principles...................................................................................................119
6.1.7.2 Logic diagram................................................................................................................................138
6.1.8 Technical data...................................................................................................................................143
6.2 High impedance differential protection, single phase HZPDIF (87).......................................... 144
6.2.1 Identification.....................................................................................................................................144
6.2.2 Functionality..................................................................................................................................... 144
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6.2.3 Function block.................................................................................................................................. 145
6.2.4 Signals................................................................................................................................................ 145
6.2.5 Settings..............................................................................................................................................145
6.2.6 Monitored data.................................................................................................................................146
6.2.7 Operation principle..........................................................................................................................146
6.2.7.1 Logic diagram................................................................................................................................147
6.2.8 Technical data...................................................................................................................................148
6.3 Generator differential protection GENPDIF (87G).........................................................................148
6.3.1 Identification.....................................................................................................................................149
6.3.2 Functionality..................................................................................................................................... 149
6.3.3 Function block.................................................................................................................................. 150
6.3.4 Signals................................................................................................................................................ 150
6.3.5 Settings.............................................................................................................................................. 151
6.3.6 Monitored data................................................................................................................................. 153
6.3.7 Operation principle.......................................................................................................................... 153
6.3.7.1 Function calculation principles.................................................................................................. 154
6.3.7.2 Fundamental frequency differential currents.........................................................................154
6.3.7.3 Supplementary criteria................................................................................................................ 158
6.3.7.4 Harmonic restrain.........................................................................................................................160
6.3.7.5 Open CT detection feature..........................................................................................................161
6.3.7.6 Cross-block logic scheme............................................................................................................162
6.3.8 Technical data...................................................................................................................................165
6.4 Low impedance restricted earth fault protection REFPDIF (87N)..............................................166
6.4.1 Identification.....................................................................................................................................166
6.4.2 Functionality..................................................................................................................................... 166
6.4.3 Function block...................................................................................................................................167
6.4.4 Signals................................................................................................................................................ 167
6.4.5 Settings..............................................................................................................................................168
6.4.6 Monitored data.................................................................................................................................169
6.4.7 Operation principle..........................................................................................................................169
6.4.7.1 Fundamental principles of the restricted ground fault protection....................................169
6.4.7.2 Restricted ground fault protection, low impedance differential protection.................... 171
6.4.7.3 Calculation of differential current and bias current...............................................................172
6.4.7.4 Detection of external ground faults.......................................................................................... 173
6.4.7.5 Algorithm of the restricted ground fault protection.............................................................174
6.4.8 Technical data................................................................................................................................... 175
Section 7 Impedance protection......................................................................................... 177
7.1 Distance measuring zones, quadrilateral characteristic ZMQPDIS (21), ZMQAPDIS (21),
ZDRDIR (21D).......................................................................................................................................... 177
7.1.1 Identification..................................................................................................................................... 177
7.1.2 Functionality......................................................................................................................................177
7.1.3 Function block...................................................................................................................................178
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7.1.4 Signals................................................................................................................................................ 179
7.1.5 Settings.............................................................................................................................................. 181
7.1.6 Monitored data.................................................................................................................................183
7.1.7 Operation principle.......................................................................................................................... 183
7.1.7.1 Full scheme measurement.......................................................................................................... 183
7.1.7.2 Impedance characteristic............................................................................................................184
7.1.7.3 Minimum operating current....................................................................................................... 188
7.1.7.4 Measuring principles....................................................................................................................188
7.1.7.5 Directional impedance element for quadrilateral characteristics...................................... 191
7.1.7.6 Simplified logic diagrams............................................................................................................192
7.1.8 Technical data...................................................................................................................................196
7.2 Phase selection, quadrilateral characteristic with fixed angle FDPSPDIS (21).........................197
7.2.1 Identification.....................................................................................................................................197
7.2.1.1 Identification..................................................................................................................................197
7.2.2 Functionality......................................................................................................................................197
7.2.3 Function block.................................................................................................................................. 198
7.2.4 Signals................................................................................................................................................ 198
7.2.5 Settings..............................................................................................................................................199
7.2.6 Operation principle......................................................................................................................... 200
7.2.6.1 Phase-to-ground fault................................................................................................................. 202
7.2.6.2 Phase-to-phase fault....................................................................................................................203
7.2.6.3 Three-phase faults....................................................................................................................... 205
7.2.6.4 Load encroachment..................................................................................................................... 206
7.2.6.5 Minimum operate currents.........................................................................................................209
7.2.6.6 Simplified logic diagrams...........................................................................................................209
7.2.7 Technical data................................................................................................................................... 215
7.3 Full-scheme distance measuring, Mho characteristic ZMHPDIS (21).........................................215
7.3.1 Identification.....................................................................................................................................215
7.3.2 Functionality......................................................................................................................................215
7.3.3 Function block...................................................................................................................................216
7.3.4 Signals................................................................................................................................................ 216
7.3.5 Settings.............................................................................................................................................. 217
7.3.6 Operation principle.......................................................................................................................... 219
7.3.6.1 Full scheme measurement.......................................................................................................... 219
7.3.6.2 Impedance characteristic............................................................................................................219
7.3.6.3 Basic operation characteristics.................................................................................................220
7.3.6.4 Theory of operation......................................................................................................................222
7.3.6.5 Simplified logic diagrams............................................................................................................231
7.3.7 Technical data...................................................................................................................................234
7.4 Directional impedance element for mho characteristic and additional distance
protection directional function for earth faults ZDMRDIR (21D), ZDARDIR..............................235
7.4.1 Identification.....................................................................................................................................235
7.4.2 Functionality..................................................................................................................................... 235
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7.4.3 Function block.................................................................................................................................. 235
7.4.4 Signals................................................................................................................................................ 235
7.4.5 Settings..............................................................................................................................................236
7.4.6 Monitored data.................................................................................................................................238
7.4.7 Operation principle..........................................................................................................................238
7.4.7.1 Directional impedance element for mho characteristic ZDMRDIR (21D).......................... 238
7.5 Faulty phase identification with load encroachment FMPSPDIS (21)....................................... 240
7.5.1 Identification.................................................................................................................................... 240
7.5.2 Functionality......................................................................................................................................241
7.5.3 Function block...................................................................................................................................241
7.5.4 Signals................................................................................................................................................ 241
7.5.5 Settings..............................................................................................................................................242
7.5.6 Operation principle..........................................................................................................................243
7.5.6.1 The phase selection function..................................................................................................... 243
7.5.7 Technical data...................................................................................................................................253
7.6 Distance protection zone, quadrilateral characteristic, separate settings ZMRPDIS
(21), ZMRAPDIS (21) and ZDRDIR (21D).............................................................................................254
7.6.1 Identification.................................................................................................................................... 254
7.6.2 Functionality..................................................................................................................................... 254
7.6.3 Function block.................................................................................................................................. 255
7.6.4 Signals................................................................................................................................................ 255
7.6.5 Settings.............................................................................................................................................. 257
7.6.6 Operation principle..........................................................................................................................259
7.6.6.1 Full scheme measurement..........................................................................................................259
7.6.6.2 Impedance characteristic........................................................................................................... 260
7.6.6.3 Minimum operating current....................................................................................................... 264
7.6.6.4 Measuring principles....................................................................................................................264
7.6.6.5 Directional impedance element for quadrilateral characteristics......................................267
7.6.6.6 Simplified logic diagrams........................................................................................................... 268
7.6.7 Technical data................................................................................................................................... 271
7.7 Phase selection, quadrilateral characteristic with settable angle FRPSPDIS (21)................... 272
7.7.1 Identification.....................................................................................................................................272
7.7.2 Functionality......................................................................................................................................272
7.7.3 Function block...................................................................................................................................273
7.7.4 Signals................................................................................................................................................ 273
7.7.5 Settings..............................................................................................................................................274
7.7.6 Operation principle..........................................................................................................................275
7.7.6.1 Phase-to-ground fault..................................................................................................................277
7.7.6.2 Phase-to-phase fault....................................................................................................................279
7.7.6.3 Three-phase faults....................................................................................................................... 280
7.7.6.4 Load encroachment......................................................................................................................281
7.7.6.5 Minimum operate currents.........................................................................................................285
7.7.6.6 Simplified logic diagrams........................................................................................................... 285
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7.7.7 Technical data................................................................................................................................... 291
7.8 High speed distance protection ZMFPDIS (21)...............................................................................291
7.8.1 Identification.....................................................................................................................................291
7.8.2 Functionality......................................................................................................................................291
7.8.3 Function block.................................................................................................................................. 293
7.8.4 Signals................................................................................................................................................294
7.8.5 Settings..............................................................................................................................................296
7.8.6 Monitored data.................................................................................................................................301
7.8.7 Operation principle..........................................................................................................................302
7.8.7.1 Filtering.......................................................................................................................................... 302
7.8.7.2 Distance measuring zones..........................................................................................................302
7.8.7.3 Phase-selection element............................................................................................................. 303
7.8.7.4 Directional element......................................................................................................................305
7.8.7.5 Fuse failure.................................................................................................................................... 305
7.8.7.6 Measuring principles................................................................................................................... 306
7.8.7.7 Load encroachment......................................................................................................................316
7.8.7.8 Simplified logic schemes............................................................................................................. 317
7.8.7.9 Measurement.................................................................................................................................323
7.8.8 Technical data...................................................................................................................................328
7.9 High speed distance protection for series compensated lines ZMFCPDIS (21)...................... 329
7.9.1 Identification.................................................................................................................................... 329
7.9.2 Functionality..................................................................................................................................... 329
7.9.3 Function block.................................................................................................................................. 330
7.9.4 Signals.................................................................................................................................................331
7.9.5 Settings..............................................................................................................................................333
7.9.6 Monitored data................................................................................................................................ 340
7.9.7 Operation principle.......................................................................................................................... 341
7.9.7.1 Filtering...........................................................................................................................................341
7.9.7.2 Distance measuring zones.......................................................................................................... 341
7.9.7.3 Phase-selection element............................................................................................................. 342
7.9.7.4 Directional element...................................................................................................................... 343
7.9.7.5 Fuse failure.................................................................................................................................... 344
7.9.7.6 Power swings................................................................................................................................ 344
7.9.7.7 Measurement principles............................................................................................................. 344
7.9.7.8 Load encroachment..................................................................................................................... 356
7.9.7.9 Simplified logic schemes.............................................................................................................357
7.9.7.10 Measurement.................................................................................................................................362
7.9.8 Technical data...................................................................................................................................367
7.10 Pole slip protection PSPPPAM (78)................................................................................................... 367
7.10.1 Identification.....................................................................................................................................367
7.10.2 Functionality..................................................................................................................................... 367
7.10.3 Function block.................................................................................................................................. 369
7.10.4 Signals................................................................................................................................................369
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7.10.5 Settings..............................................................................................................................................370
7.10.6 Monitored data................................................................................................................................. 371
7.10.7 Operation principle.......................................................................................................................... 371
7.10.8 Technical data...................................................................................................................................374
7.11 Out-of-step protection OOSPPAM (78)............................................................................................375
7.11.1 Identification.....................................................................................................................................375
7.11.2 Functionality..................................................................................................................................... 375
7.11.3 Function block.................................................................................................................................. 375
7.11.4 Signals................................................................................................................................................ 376
7.11.5 Settings.............................................................................................................................................. 377
7.11.6 Monitored data.................................................................................................................................378
7.11.7 Operation principle..........................................................................................................................378
7.11.7.1 Lens characteristic....................................................................................................................... 381
7.11.7.2 Detecting an out-of-step condition..........................................................................................383
7.11.7.3 Maximum slip frequency............................................................................................................. 383
7.11.7.4 Taking care of the circuit breaker ............................................................................................ 384
7.11.7.5 Design............................................................................................................................................. 386
7.11.8 Technical data...................................................................................................................................387
7.12 Loss of excitation LEXPDIS(40).........................................................................................................387
7.12.1 Identification.................................................................................................................................... 388
7.12.2 Functionality..................................................................................................................................... 388
7.12.3 Function block.................................................................................................................................. 388
7.12.4 Signals................................................................................................................................................388
7.12.5 Settings..............................................................................................................................................389
7.12.6 Monitored data................................................................................................................................ 390
7.12.7 Operation principle......................................................................................................................... 390
7.12.8 Technical data...................................................................................................................................395
7.13 Sensitive rotor earth fault protection, injection based ROTIPHIZ (64R).................................. 395
7.13.1 Identification.................................................................................................................................... 395
7.13.2 Functionality..................................................................................................................................... 395
7.13.3 Function block..................................................................................................................................396
7.13.4 Signals................................................................................................................................................396
7.13.5 Settings..............................................................................................................................................397
7.13.6 Monitored data................................................................................................................................ 398
7.13.7 Detailed interface description...................................................................................................... 399
7.13.8 Operation principle......................................................................................................................... 400
7.13.8.1 The injection unit REX060.......................................................................................................... 402
7.13.8.2 Rotor Earth Fault Protection function..................................................................................... 402
7.13.8.3 General measurement of ground fault impedance...............................................................404
7.13.8.4 Simplified logic diagram.............................................................................................................406
7.13.9 Technical data.................................................................................................................................. 408
7.14 100% stator earth fault protection, injection based STTIPHIZ (64S)....................................... 409
7.14.1 Identification....................................................................................................................................409
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7.14.2 Functionality.....................................................................................................................................409
7.14.3 Detailed interface description...................................................................................................... 410
7.14.4 Function block...................................................................................................................................412
7.14.5 Signals................................................................................................................................................ 412
7.14.6 Settings.............................................................................................................................................. 413
7.14.7 Monitored data.................................................................................................................................414
7.14.8 Operation principle..........................................................................................................................415
7.14.8.1 Configuration principle................................................................................................................415
7.14.8.2 Generator system grounding methods....................................................................................417
7.14.8.3 100% Stator earth fault protection function.......................................................................... 421
7.14.8.4 General measurement of ground fault impedance............................................................... 426
7.14.8.5 Measuring reference impedance............................................................................................... 427
7.14.8.6 Simplified logic diagram............................................................................................................. 431
7.14.9 Technical data...................................................................................................................................432
7.15 Under impedance protection for generators and transformers ZGVPDIS...............................433
7.15.1 Identification.................................................................................................................................... 433
7.15.2 Functionality..................................................................................................................................... 433
7.15.3 Function block.................................................................................................................................. 433
7.15.4 Signals................................................................................................................................................434
7.15.5 Settings............................................................................................................................................. 434
7.15.6 Monitored data................................................................................................................................ 436
7.15.7 Operation principle......................................................................................................................... 436
7.15.7.1 Operation principle of zone 1.....................................................................................................438
7.15.7.2 Operation principle of zone 2.................................................................................................... 440
7.15.7.3 Operation principle of zone 3.................................................................................................... 444
7.15.7.4 Load encroachment.....................................................................................................................444
7.15.7.5 Under voltage seal-in...................................................................................................................445
7.15.8 Technical data.................................................................................................................................. 446
Section 8 Current protection.............................................................................................. 447
8.1 Instantaneous phase overcurrent protection PHPIOC (50).........................................................447
8.1.1 Identification.................................................................................................................................... 447
8.1.2 Functionality..................................................................................................................................... 447
8.1.3 Function block.................................................................................................................................. 447
8.1.4 Signals................................................................................................................................................447
8.1.5 Settings............................................................................................................................................. 448
8.1.6 Monitored data................................................................................................................................ 449
8.1.7 Operation principle......................................................................................................................... 449
8.1.8 Technical data.................................................................................................................................. 449
8.2 Four step phase overcurrent protection OC4PTOC(51/67)........................................................ 450
8.2.1 Identification.................................................................................................................................... 450
8.2.2 Functionality.....................................................................................................................................450
8.2.3 Function block.................................................................................................................................. 451
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8.2.4 Signals................................................................................................................................................ 451
8.2.5 Settings..............................................................................................................................................453
8.2.6 Monitored data................................................................................................................................ 459
8.2.7 Operation principle......................................................................................................................... 459
8.2.8 Technical data...................................................................................................................................467
8.3 Instantaneous residual overcurrent protection EFPIOC (50N)...................................................467
8.3.1 Identification.................................................................................................................................... 468
8.3.2 Functionality.....................................................................................................................................468
8.3.3 Function block..................................................................................................................................468
8.3.4 Signals................................................................................................................................................468
8.3.5 Settings............................................................................................................................................. 469
8.3.6 Monitored data................................................................................................................................ 469
8.3.7 Operation principle......................................................................................................................... 469
8.3.8 Technical data.................................................................................................................................. 470
8.4 Four step residual overcurrent protection, (Zero sequence or negative sequence
directionality) EF4PTOC (51N/67N)................................................................................................. 470
8.4.1 Identification.................................................................................................................................... 470
8.4.2 Functionality..................................................................................................................................... 470
8.4.3 Function block...................................................................................................................................471
8.4.4 Signals................................................................................................................................................ 471
8.4.5 Settings..............................................................................................................................................472
8.4.6 Monitored data.................................................................................................................................479
8.4.7 Operation principle..........................................................................................................................479
8.4.7.1 Operating quantity within the function...................................................................................479
8.4.7.2 Internal polarizing........................................................................................................................ 480
8.4.7.3 External polarizing for ground-fault function........................................................................ 482
8.4.7.4 Directional detection for ground fault function.................................................................... 482
8.4.7.5 Base quantities within the protection..................................................................................... 482
8.4.7.6 Internal ground-fault protection structure.............................................................................483
8.4.7.7 Four residual overcurrent steps................................................................................................ 483
8.4.7.8 Directional supervision element with integrated directional comparison function......484
8.4.7.9 Second harmonic blocking element......................................................................................... 486
8.4.7.10 Switch on to fault feature...........................................................................................................488
8.4.8 Technical data.................................................................................................................................. 490
8.5 Four step directional negative phase sequence overcurrent protection NS4PTOC (46I2)... 491
8.5.1 Identification.....................................................................................................................................491
8.5.2 Functionality..................................................................................................................................... 491
8.5.3 Function block.................................................................................................................................. 492
8.5.4 Signals................................................................................................................................................492
8.5.5 Settings..............................................................................................................................................493
8.5.6 Monitored data................................................................................................................................ 498
8.5.7 Operation principle......................................................................................................................... 498
8.5.7.1 Operating quantity within the function.................................................................................. 498
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8.5.7.2 Internal polarizing facility of the function...............................................................................499
8.5.7.3 External polarizing for negative sequence function............................................................. 499
8.5.7.4 Internal negative sequence protection structure..................................................................500
8.5.7.5 Four negative sequence overcurrent stages.......................................................................... 500
8.5.7.6 Directional supervision element with integrated directional comparison function.......501
8.5.8 Technical data.................................................................................................................................. 503
8.6 Sensitive directional residual overcurrent and power protection SDEPSDE (67N)................504
8.6.1 Identification.................................................................................................................................... 504
8.6.2 Functionality.....................................................................................................................................504
8.6.3 Function block..................................................................................................................................506
8.6.4 Signals................................................................................................................................................507
8.6.5 Settings............................................................................................................................................. 508
8.6.6 Monitored data.................................................................................................................................510
8.6.7 Operation principle..........................................................................................................................510
8.6.7.1 Function inputs............................................................................................................................. 510
8.6.8 Technical data...................................................................................................................................516
8.7 Thermal overload protection, two time constants TRPTTR (49)................................................ 517
8.7.1 Identification.....................................................................................................................................518
8.7.2 Functionality..................................................................................................................................... 518
8.7.3 Function block.................................................................................................................................. 518
8.7.4 Signals................................................................................................................................................ 518
8.7.5 Settings.............................................................................................................................................. 519
8.7.6 Monitored data................................................................................................................................ 520
8.7.7 Operation principle......................................................................................................................... 520
8.7.8 Technical data...................................................................................................................................524
8.8 Breaker failure protection CCRBRF(50BF)...................................................................................... 524
8.8.1 Identification.................................................................................................................................... 524
8.8.2 Functionality..................................................................................................................................... 524
8.8.3 Function block.................................................................................................................................. 525
8.8.4 Signals................................................................................................................................................ 525
8.8.5 Settings..............................................................................................................................................526
8.8.6 Monitored data.................................................................................................................................527
8.8.7 Operation principle..........................................................................................................................527
8.8.8 Technical data...................................................................................................................................533
8.9 Stub protection STBPTOC (50STB)...................................................................................................533
8.9.1 Identification.....................................................................................................................................533
8.9.2 Functionality..................................................................................................................................... 533
8.9.3 Function block.................................................................................................................................. 534
8.9.4 Signals................................................................................................................................................534
8.9.5 Settings..............................................................................................................................................534
8.9.6 Monitored data.................................................................................................................................535
8.9.7 Operation principle..........................................................................................................................535
8.9.8 Technical data...................................................................................................................................536
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8.10 Pole discrepancy protection CCPDSC(52PD)..................................................................................536
8.10.1 Identification.....................................................................................................................................537
8.10.2 Functionality..................................................................................................................................... 537
8.10.3 Function block.................................................................................................................................. 537
8.10.4 Signals................................................................................................................................................538
8.10.5 Settings..............................................................................................................................................538
8.10.6 Monitored data.................................................................................................................................539
8.10.7 Operation principle..........................................................................................................................539
8.10.7.1 Pole discrepancy signaling from circuit breaker.................................................................... 541
8.10.7.2 Unsymmetrical current detection............................................................................................. 542
8.10.8 Technical data...................................................................................................................................542
8.11 Directional underpower protection GUPPDUP (37).......................................................................542
8.11.1 Identification.................................................................................................................................... 542
8.11.2 Functionality..................................................................................................................................... 543
8.11.3 Function block..................................................................................................................................544
8.11.4 Signals................................................................................................................................................544
8.11.5 Settings..............................................................................................................................................545
8.11.6 Monitored data................................................................................................................................ 546
8.11.7 Operation principle......................................................................................................................... 546
8.11.7.1 Low pass filtering.........................................................................................................................548
8.11.7.2 Calibration of analog inputs...................................................................................................... 548
8.11.8 Technical data.................................................................................................................................. 549
8.12 Directional overpower protection GOPPDOP (32).........................................................................550
8.12.1 Identification.................................................................................................................................... 550
8.12.2 Functionality.....................................................................................................................................550
8.12.3 Function block...................................................................................................................................551
8.12.4 Signals................................................................................................................................................ 551
8.12.5 Settings..............................................................................................................................................552
8.12.6 Monitored data................................................................................................................................ 554
8.12.7 Operation principle......................................................................................................................... 554
8.12.7.1 Low pass filtering.........................................................................................................................556
8.12.7.2 Calibration of analog inputs.......................................................................................................556
8.12.8 Technical data...................................................................................................................................557
8.13 Broken conductor check BRCPTOC (46)..........................................................................................558
8.13.1 Identification.................................................................................................................................... 558
8.13.2 Functionality..................................................................................................................................... 558
8.13.3 Function block.................................................................................................................................. 558
8.13.4 Signals................................................................................................................................................558
8.13.5 Settings..............................................................................................................................................559
8.13.6 Monitored data................................................................................................................................ 559
8.13.7 Operation principle......................................................................................................................... 559
8.13.8 Technical data...................................................................................................................................561
8.14 Negativ sequence time overcurrent protection for machines NS2PTOC (46I2)...................... 561
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8.14.1 Identification.....................................................................................................................................561
8.14.2 Functionality..................................................................................................................................... 561
8.14.3 Function block.................................................................................................................................. 562
8.14.4 Signals................................................................................................................................................562
8.14.5 Settings..............................................................................................................................................563
8.14.6 Monitored data................................................................................................................................ 564
8.14.7 Operation principle......................................................................................................................... 564
8.14.7.1 Pickup sensitivity..........................................................................................................................566
8.14.7.2 Alarm function...............................................................................................................................566
8.14.7.3 Logic diagram............................................................................................................................... 566
8.14.8 Technical data...................................................................................................................................567
8.15 Accidental energizing protection for synchronous generator AEGPVOC (50AE)................... 568
8.15.1 Identification.................................................................................................................................... 568
8.15.1.1 Functionality .................................................................................................................................568
8.15.1.2 Function block...............................................................................................................................568
8.15.1.3 Signals............................................................................................................................................ 568
8.15.1.4 Settings.......................................................................................................................................... 569
8.15.1.5 Monitored data............................................................................................................................. 569
8.15.1.6 Operation principle...................................................................................................................... 569
8.15.1.7 Technical data............................................................................................................................... 570
8.16 Voltage-restrained time overcurrent protection VRPVOC (51V)................................................. 571
8.16.1 Identification.....................................................................................................................................571
8.16.2 Functionality......................................................................................................................................571
8.16.3 Function block.................................................................................................................................. 572
8.16.4 Signals................................................................................................................................................ 572
8.16.5 Settings..............................................................................................................................................573
8.16.6 Monitored data.................................................................................................................................574
8.16.7 Operation principle..........................................................................................................................574
8.16.7.1 Measured quantities.................................................................................................................... 574
8.16.7.2 Base quantities............................................................................................................................. 574
8.16.7.3 Overcurrent protection............................................................................................................... 574
8.16.7.4 Logic diagram................................................................................................................................576
8.16.7.5 Undervoltage protection.............................................................................................................576
8.16.8 Technical data...................................................................................................................................577
8.17 Generator stator overload protection, GSPTTR (49S).................................................................. 577
8.17.1 Identification.................................................................................................................................... 578
8.17.2 Functionality..................................................................................................................................... 578
8.17.3 Function block.................................................................................................................................. 578
8.17.4 Signals................................................................................................................................................ 578
8.17.5 Settings..............................................................................................................................................579
8.17.6 Monitored data................................................................................................................................ 580
8.17.7 Operation principle......................................................................................................................... 580
8.17.8 Technical data.................................................................................................................................. 585
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8.18 Generator rotor overload protection, GRPTTR (49R)....................................................................586
8.18.1 Identification.................................................................................................................................... 586
8.18.2 Functionality.....................................................................................................................................586
8.18.3 Function block.................................................................................................................................. 587
8.18.4 Signals................................................................................................................................................ 587
8.18.5 Settings............................................................................................................................................. 588
8.18.6 Monitored data................................................................................................................................ 589
8.18.7 Operation principle......................................................................................................................... 589
8.18.8 Technical data...................................................................................................................................597
Section 9 Voltage protection.............................................................................................. 599
9.1 Two step undervoltage protection UV2PTUV (27).........................................................................599
9.1.1 Identification.................................................................................................................................... 599
9.1.2 Functionality..................................................................................................................................... 599
9.1.3 Function block..................................................................................................................................599
9.1.4 Signals............................................................................................................................................... 600
9.1.5 Settings..............................................................................................................................................601
9.1.6 Monitored data................................................................................................................................ 603
9.1.7 Operation principle......................................................................................................................... 603
9.1.7.1 Measurement principle............................................................................................................... 604
9.1.7.2 Time delay......................................................................................................................................604
9.1.7.3 Blocking..........................................................................................................................................609
9.1.7.4 Design............................................................................................................................................. 610
9.1.8 Technical data................................................................................................................................... 611
9.2 Two step overvoltage protection OV2PTOV (59)........................................................................... 612
9.2.1 Identification.....................................................................................................................................612
9.2.2 Functionality OV2PTOV................................................................................................................... 612
9.2.3 Function block...................................................................................................................................613
9.2.4 Signals................................................................................................................................................ 613
9.2.5 Settings..............................................................................................................................................614
9.2.6 Monitored data.................................................................................................................................616
9.2.7 Operation principle..........................................................................................................................616
9.2.7.1 Measurement principle................................................................................................................ 617
9.2.7.2 Time delay.......................................................................................................................................617
9.2.7.3 Blocking.......................................................................................................................................... 623
9.2.7.4 Design............................................................................................................................................. 623
9.2.8 Technical data...................................................................................................................................625
9.3 Two step residual overvoltage protection ROV2PTOV (59N)......................................................625
9.3.1 Identification.................................................................................................................................... 625
9.3.2 Functionality..................................................................................................................................... 625
9.3.3 Function block.................................................................................................................................. 626
9.3.4 Signals................................................................................................................................................626
9.3.5 Settings..............................................................................................................................................627
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9.3.6 Monitored data.................................................................................................................................628
9.3.7 Operation principle..........................................................................................................................629
9.3.7.1 Measurement principle................................................................................................................629
9.3.7.2 Time delay...................................................................................................................................... 629
9.3.7.3 Blocking.......................................................................................................................................... 634
9.3.7.4 Design............................................................................................................................................. 634
9.3.8 Technical data...................................................................................................................................635
9.4 Overexcitation protection OEXPVPH (24)....................................................................................... 636
9.4.1 Identification.................................................................................................................................... 636
9.4.2 Functionality..................................................................................................................................... 636
9.4.3 Function block.................................................................................................................................. 636
9.4.4 Signals................................................................................................................................................ 637
9.4.5 Settings..............................................................................................................................................637
9.4.6 Monitored data................................................................................................................................ 638
9.4.7 Operation principle......................................................................................................................... 638
9.4.7.1 Measured voltage......................................................................................................................... 641
9.4.7.2 Operate time of the overexcitation protection...................................................................... 641
9.4.7.3 Cooling........................................................................................................................................... 645
9.4.7.4 Overexcitation protection function measurands.................................................................. 645
9.4.7.5 Overexcitation alarm................................................................................................................... 646
9.4.7.6 Logic diagram............................................................................................................................... 646
9.4.8 Technical data...................................................................................................................................647
9.5 Voltage differential protection VDCPTOV (60).............................................................................. 647
9.5.1 Identification.................................................................................................................................... 647
9.5.2 Functionality..................................................................................................................................... 647
9.5.3 Function block..................................................................................................................................648
9.5.4 Signals................................................................................................................................................648
9.5.5 Settings............................................................................................................................................. 649
9.5.6 Monitored data................................................................................................................................ 649
9.5.7 Operation principle......................................................................................................................... 650
9.5.8 Technical data...................................................................................................................................651
9.6 100% Stator ground fault protection, 3rd harmonic based STEFPHIZ (59THD).....................652
9.6.1 Identification.................................................................................................................................... 652
9.6.2 Functionality..................................................................................................................................... 652
9.6.3 Function block.................................................................................................................................. 653
9.6.4 Signals................................................................................................................................................654
9.6.5 Settings............................................................................................................................................. 654
9.6.6 Monitored data................................................................................................................................ 655
9.6.7 Operation principle......................................................................................................................... 656
9.6.8 Technical data.................................................................................................................................. 660
9.7 Loss of voltage check LOVPTUV (27)............................................................................................... 660
9.7.1 Identification....................................................................................................................................660
9.7.2 Functionality..................................................................................................................................... 661
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