System grounding.......................................................................397
Fault infeed from remote end..................................................... 399
Load encroachment....................................................................400
Short line application.................................................................. 401
Long transmission line application..............................................402
Parallel line application with mutual coupling............................. 403
Tapped line application...............................................................410
Series compensation in power systems.......................................... 413
Steady state voltage regulation and increase of voltage
collapse limit...............................................................................413
Increase in power transfer..........................................................414
Voltage and current inversion.....................................................415
Impact of series compensation on protective IED of
adjacent lines..............................................................................424
Distance protection.....................................................................425
Underreaching and overreaching schemes................................426
Setting guidelines............................................................................ 433
General.......................................................................................433
Setting of zone 1.........................................................................434
Setting of overreaching zone......................................................434
Setting of reverse zone...............................................................435
Series compensated and adjacent lines.....................................435
Setting of zones for parallel line application............................... 440
Setting of reach in resistive direction..........................................442
Load impedance limitation, without load encroachment
function.......................................................................................443
Zone reach setting higher than minimum load impedance.........444
Parameter setting guidelines......................................................445
ZMMMXU settings......................................................................448
Power swing detection ZMRPSB (68).................................................. 448
Identification.................................................................................... 448
Application....................................................................................... 449
Setting guidelines............................................................................ 450
Power swing logic PSLPSCH .............................................................. 458
Table of contents
Transformer protection RET670 2.2 ANSI
9
Application manual
Summary of Contents for RELION RET670
Page 1: ...RELION 670 SERIES Transformer protection RET670 Version 2 2 ANSI Application manual ...
Page 2: ......
Page 48: ...42 ...
Page 64: ...58 ...
Page 74: ...68 ...
Page 104: ...98 ...
Page 194: ...188 ...
Page 518: ...512 ...
Page 618: ...612 ...
Page 648: ...642 ...
Page 666: ...660 ...
Page 672: ...666 ...
Page 682: ...676 ...
Page 844: ...838 ...
Page 868: ...862 ...
Page 956: ...950 ...
Page 964: ...958 ...
Page 1004: ...998 ...
Page 1014: ...1008 ...
Page 1015: ...1009 ...