6F2S1915 (0.46)
GRZ200 (Soft 031 & 032)
- 81 -
2.1.8
Tips to set the main/remote backup relays
To make the coordination between the main (primary) relay and backup relays on lines, using
a reach
1
setting and a delay timer setting
2
can resolve the problems. Figure 2.1-53 exemplifies
that respective reaches and delays in the distance protection (ZS/ZG) functions result in the
coordination between the main (primary) relay and backup relays on the lines.
CTI
Busbar A
Busbar B
Busbar C
Busbar D
G
Zone2
(X)
Zone1
(X)
TZ1
X
Zone3
(X)
Zone4
(X)
Zone5
(X)
Y
Zone1
(Y)
Zone2
(Y)
Zone3
(Y)
Zone4
(Y)
TZ5
TZ4
TZ3
TZ2
Zone5
(Y)
Z
Zone1
(Z)
Zone2
(Z)
Zone4
(Z)
Zone5
(Z)
Reach in the forward
R
Q
P
Zone1
(R)
Zone2
(R)
Zone4
(R)
Zone5
(R)
Zone1
(Q)
Zone2
(Q)
Zone3
(Q)
Zone4
(Q)
Zone5
(Q)
Zone1
(P)
Zone2
(P)
Zone3
(P)
Zone4
(P)
X
R
Y
Q
Z
P
Line AB
Line BC
Line CD
TZ1
TZ2
TZ3
TZ4
TZ5
Reach in the forward
CTI
Figure 2.1-53 Zones and time coordination between terminals
3
1
Note: For the ZS elements, the ‘reach’ setting is possible using the settings [
Z*S-
Mho.Reach
] and [
Z*S-Mho.Angle
] for the Mho characteristic. If the Quad
characteristic is applied, the value of the reach setting is projected on the
reactance-axis.
2
Note: To realize the coordination time interval (CTI), the user can apply delay times for
the operation in respective elements. For the ZS elements, for example, use the
settings [
TZ*S
].
3
Note: ‘Zone1’, ‘zone2’, and ‘zone3’ are zones seen by the ZS/ZG relays looking into the
forward. On the other hand, ‘zone4’ and ‘zone5’ are zones seen by the ZS/ZG relays
looking into the backward. The locations of the ZS/ZG relays are shown with
parentheses. That is, the zone1
(X)
, which is operated at the location X, trips ‘circuit
breaker
(X)
’.
(i)
Setting for the primary line (Zone1)
The zone1 of the ZS/ZG function is equivalent to the main (primary) relay; the zone1 shall
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 ...
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