6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 126 -
(vi)
Delay of trip permission signal
Figure 2.3-4 shows POP sending circuit. The trip permission signals are (DISCAR-S: used for
the external carrier communication) and (INT.DISCAR-S-*: used for the integral carrier
communication). The selection of either the single-phase trip (
1P
) or the three-phase trip (
3P
)
is carried out using scheme switch [
DisCAR-TPMD
].
Transmission of the trip permission signal continues for setting [
TSBCT-dis
] even after
the local terminal issues a trip signal.
In many cases, at both ends of the line, the overreaching elements operate at the same
time. However, there may be some cases where they cannot operate simultaneously because
fault currents do not flow symmetrically. That is, the overreaching elements far from a fault
cannot operate by the fault, but the overreaching elements far from the fault will be operated
indirectly if the other terminals are induced to trip. To avoid this case, transmission of the trip
permission signal continues for a while set by [
TSBCT-dis
] after reset of ZCSF/ZCSG operation.
Consequently, the overreaching elements far from the fault can also generate a trip signal
because the trip permission signal is picked up delayed.
Thus, this command protection ensures its operation at the remote terminal.
≥
1
8000001B78
8100001B79
8200001B7A
DISCAR-OPT-A
DISCAR-OPT-B
DISCAR-OPT-C
8300001B7B
DISCAR-CS-S_POUP
DISCAR-CS-C_POUP
DISCAR-CS-B_POUP
DISCAR-CS-A_POUP
&
800000EB55 DISCAR_F.BLOCK
810000EB56 DISCAR_PERMIT
From SOTF-OC
1
≥
1
1
≥
1
&
&
&
≥
1
8F00001B7C
DISCAR-S
INT.DISCAR-S-S
INT.DISCAR-S-C
INT.DISCAR-S-B
INT.DISCAR-S-A
=1
=1
=1
=1
≥
1
≥
1
≥
1
Z1G-TRIP-A
Z1G-TRIP-B
Z1G-TRIP-C
Z1S-OPT
OCH-RETRIP
≥
1
&
t 0
TSBCT-DIS
t 0
t 0
t 0
0.00 to 1.00s
≥
1
≥
1
≥
1
≥
1
From Z1G
ECHO logic
UOP
Dis-CAR
POP
used for the
integral carrier
communication
used for the
external carrier
communication
Figure 2.3-4 Sending circuit in POP and UOP
2.3.3
Unblocking overreach protection (UOP)
When information are exchanged using a transmission line (the power line carrier), PUP and
POP cannot trip dependably. This is because a trip permission signal may not be exchanged
Содержание GR 200 Series
Страница 1047: ...6F2S1915 0 46 GRZ200 Soft 031 032 1026 Figure 8 3 4 Screen shot from GR TIEMS ...
Страница 1354: ...6F2S1915 0 46 GRZ200 Soft 031 032 1333 Appendix 1 Signal list for common function ...
Страница 1369: ...6F2S1915 0 46 GRZ200 Soft 031 032 1348 Unit mm Panel cut out for 1 2 case size Figure 2 2 3 Panel cutout figure 1 2 size case ...
Страница 1410: ...6F2S1915 0 46 GRZ200 Soft 031 032 1389 This page is intentionally blank ...
Страница 1480: ...6F2S1915 0 46 GRZ200 Soft 031 032 1459 Appendix 6 Ordering ...
Страница 1497: ...6F2S1915 0 46 GRZ200 Soft 031 032 1476 Appendix 7 Technical data ...
Страница 1518: ...6F2S1915 0 46 GRZ200 Soft 031 032 1497 Appendix 8 Manufacture setting ...
Страница 1520: ...6F2S1915 0 46 GRZ200 Soft 031 032 1499 Appendix 9 Matrix between VCT terminals and relay applications ...
Страница 1523: ...6F2S1915 0 46 GRZ200 Soft 031 032 1502 Appendix 10 CT requirement ...
Страница 1531: ...6F2S1915 0 46 GRZ200 Soft 031 032 1510 Appendix 12 Engineering exercise ...
Страница 1563: ......