ABB RELION 670 Series Applications Manual page 14

Table of contents
7.15.3 Setting guidelines..................................................................................................................... 354
7.15.3.1 Scheme communication and tripping for faults occurring during power
swinging over the protected line........................................................................................354
7.15.3.2 Blocking and tripping logic for evolving power swings................................................. 357
7.16 Pole slip protection PSPPPAM ....................................................................................................359
7.16.1 Identification..............................................................................................................................359
7.16.2 Application..................................................................................................................................359
7.16.3 Setting guidelines..................................................................................................................... 362
7.16.3.1 Setting example for line application.................................................................................. 363
7.16.3.2 Setting example for generator application...................................................................... 366
7.17 Out-of-step protection OOSPPAM ............................................................................................ 370
7.17.1 Identification..............................................................................................................................370
7.17.2 Application..................................................................................................................................370
7.17.3 Setting guidelines......................................................................................................................372
7.18 Phase preference logic PPLPHIZ................................................................................................. 375
7.18.1 Identification.............................................................................................................................. 375
7.18.2 Application.................................................................................................................................. 375
7.18.3 Setting guidelines..................................................................................................................... 378
7.19 Under impedance protection for generators and transformers ZGVPDIS........................ 379
7.19.1 Identification.............................................................................................................................. 379
7.19.2 Application..................................................................................................................................379
7.19.2.1 Operating zones..................................................................................................................... 381
7.19.2.2 Zone 1 operation.................................................................................................................... 382
7.19.2.3 Zone 2 operation.................................................................................................................... 382
7.19.2.4 Zone 3 operation.................................................................................................................... 383
7.19.2.5 CT and VT positions...............................................................................................................383
7.19.2.6 Undervoltage seal-in function............................................................................................. 383
7.19.2.7 Load encroachment for zone 2 and zone 3....................................................................... 383
7.19.2.8 External block signals........................................................................................................... 384
7.19.3 Setting Guidelines.....................................................................................................................384
7.19.3.1 General..................................................................................................................................... 384
7.19.3.2 Load encroachment...............................................................................................................385
7.19.3.3 Under voltage seal-in.............................................................................................................387
Section 8 Current protection......................................................................................... 389
8.1 Instantaneous phase overcurrent protection PHPIOC ......................................................... 389
8.1.1 Identification..............................................................................................................................389
8.1.2 Application..................................................................................................................................389
8.1.3 Setting guidelines..................................................................................................................... 389
8.1.3.1 Meshed network without parallel line............................................................................... 390
8.1.3.2 Meshed network with parallel line...................................................................................... 392
8.2 Four step phase overcurrent protection OC4PTOC............................................................... 393
8.2.1 Identification..............................................................................................................................393
8.2.2 Application..................................................................................................................................393
8.2.3 Setting guidelines..................................................................................................................... 394
8.2.3.1 Settings for each step...........................................................................................................395
8.2.3.2 2nd harmonic restrain...........................................................................................................398
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Application manual