ABB Relion 670 series - Security in Substation Automation; General Security in Substation Automation

Identification.................................................................................... 309
Application....................................................................................... 309
System grounding.......................................................................309
Fault infeed from remote end..................................................... 313
Load encroachment....................................................................314
Short line application.................................................................. 315
Long transmission line application..............................................316
Parallel line application with mutual coupling............................. 316
Tapped line application...............................................................323
Setting guidelines............................................................................ 325
General.......................................................................................325
Setting of zone 1.........................................................................326
Setting of overreaching zone......................................................326
Setting of reverse zone...............................................................327
Setting of zones for parallel line application............................... 328
Setting of reach in resistive direction..........................................329
Load impedance limitation, without load encroachment function330
Load impedance limitation, with Phase selection with load
encroachment, quadrilateral characteristic function activated ...332
Setting of minimum operating currents.......................................332
Setting of timers for distance protection zones...........................333
Phase selection, quadrilateral characteristic with settable angle
FRPSPDIS (21).................................................................................... 333
Identification.................................................................................... 333
Application....................................................................................... 333
Load encroachment characteristics.................................................339
Phase-to-ground fault in forward direction..................................340
Phase-to-ground fault in reverse direction..................................342
Phase-to-phase fault in forward direction................................... 343
Setting guidelines............................................................................ 345
Resistive reach with load encroachment characteristic..............346
Minimum operate currents..........................................................347
Phase selection, quad, fixed angle, load encroachment FDPSPDIS
(21)....................................................................................................... 347
Identification.................................................................................... 347
Identification............................................................................... 347
Application....................................................................................... 347
Setting guidelines............................................................................ 348
Load encroachment characteristics............................................348
Resistive reach with load encroachment characteristic..............354
Table of contents
Line distance protection REL670 2.2 ANSI 7
Application manual