⎯
41
⎯
6 F 2 S 0 8 4 6
When autoreclose is out of service, the zone 1 extension protection is blocked.
C
B
Zone 3
Zone 2
Zone 1
Zone 1X
T3
T2
T 1
A
T 4
Zone R
Time
Figure 2.4.2.1 Time/Distance Characteristics of Zone 1 Extension Protection
and Time-Stepped Distance Protection
Scheme Logic
The scheme logic of the zone 1 extension protection is shown in Figure 2.4.2.2. Zone 1X outputs
single-phase tripping signal S-TRIP or three-phase tripping signal M-TRIP through phase
selection logic on condition that the reclosing mode selection switch [ARC-M] of autoreclose be
set to "TPAR" or "SPAR & TPAR" and condition REC-READY1 = 1 be established. The phase
selection logic is the same as that for the zone 1 protection shown in Figure 2.4.1.7, except that
Z1XG and Z1XS are employed instead of Z1G and Z1S. When a power swing is detected (PSB =
1) and when a VT failure is detected (VTF = 1), tripping is blocked. Power swing blocking can be
disabled by the scheme switch [PSB-Z1X].
The zone 1 extension protection is disabled by the binary input signal (PLC signal)
Z1XG_BLOCK and Z1XS_BLOCK.
S-TRIP
M-TRIP
Phase
Selection
"SPAR","TPAR",
"SPAR + TPAR"
[ARC-M]
+
PSB
[PSB-Z1X]
"ON"
VTF
REC-READY1
Z1X
&
&
≥
1
Z1X_INIT
1540
Z1XG_BLOCK
1617
Z1XS_BLOCK
1633
22:Z1XG-A 23:Z1XG-B 24:Z1XG-C
37:Z1XS-AB 38:Z1XS-BC 39:Z1XS-CA
1
&
≥
1
"Z1-EXT"
Protection scheme
+
Z1X_F.ENABLE
1659
Figure 2.4.2.2 Zone 1 Extension Scheme Logic
REC-READY1 is a signal in the autoreclose function, and as shown in Figure 2.4.2.3,
REC-READY1 = 1 is established when the reclaim time has elapsed, that is, when autoreclose is
ready, and reset when a reclosing command is output.
Zone 1 extension can provide protection in the case of evolving faults provided that they occur
before the reclosing command is output. Otherwise, in the case of a permanent fault, it will not
Содержание GRZ100 B Series
Страница 264: ... 263 6 F 2 S 0 8 4 6 Appendix A Block Diagram ...
Страница 271: ... 270 6 F 2 S 0 8 4 6 ...
Страница 272: ... 271 6 F 2 S 0 8 4 6 Appendix B Signal List ...
Страница 307: ... 306 6 F 2 S 0 8 4 6 ...
Страница 308: ... 307 6 F 2 S 0 8 4 6 Appendix C Variable Timer List ...
Страница 310: ... 309 6 F 2 S 0 8 4 6 Appendix D Binary Input Output Default Setting List ...
Страница 321: ... 320 6 F 2 S 0 8 4 6 ...
Страница 322: ... 321 6 F 2 S 0 8 4 6 Appendix E Details of Relay Menu and LCD Button Operation ...
Страница 331: ... 330 6 F 2 S 0 8 4 6 ...
Страница 340: ... 339 6 F 2 S 0 8 4 6 Appendix G Typical External Connections ...
Страница 377: ... 376 6 F 2 S 0 8 4 6 ...
Страница 384: ... 383 6 F 2 S 0 8 4 6 Appendix J Return Repair Form ...
Страница 388: ... 387 6 F 2 S 0 8 4 6 Customer Name Company Name Address Telephone No Facsimile No Signature ...
Страница 389: ... 388 6 F 2 S 0 8 4 6 ...
Страница 390: ... 389 6 F 2 S 0 8 4 6 Appendix K Technical Data ...
Страница 401: ... 400 6 F 2 S 0 8 4 6 ...
Страница 402: ... 401 6 F 2 S 0 8 4 6 Appendix L Symbols Used in Scheme Logic ...
Страница 405: ... 404 6 F 2 S 0 8 4 6 ...
Страница 406: ... 405 6 F 2 S 0 8 4 6 Appendix M Example of Setting Calculation ...
Страница 417: ... 416 6 F 2 S 0 8 4 6 ...
Страница 418: ... 417 6 F 2 S 0 8 4 6 Appendix N IEC60870 5 103 Interoperability and Troubleshooting ...
Страница 430: ... 429 6 F 2 S 0 8 4 6 Appendix O Programmable Reset Characteristics and Implementation of Thermal Model to IEC60255 8 ...
Страница 434: ... 433 6 F 2 S 0 8 4 6 Appendix P Inverse Time Characteristics ...
Страница 437: ... 436 6 F 2 S 0 8 4 6 ...
Страница 438: ... 437 6 F 2 S 0 8 4 6 Appendix Q Failed Module Tracing and Replacement ...
Страница 444: ... 443 6 F 2 S 0 8 4 6 Appendix R Ordering ...
Страница 447: ......