RLdOutFw and RLdOutRv and the inner reactive boarder in forward and reverse
direction X1InFw and X1InRv. See figure 10.
The corresponding resistive boarder for the inner resistive boundary and outer
resistive boundary is calculated automatically from the setting of kLdRFw and
kLdRRv.
The inner zone of ZMRPSB must cover all zones by at least 10% margin.
The test is mainly divided into two parts, one which aim is to verify that the settings
are in accordance to the selective plane and a second part to verify the operation of
ZMRPSB. The proposed test points for validation of the settings are numbered
according to figure
10
Test of the interactions or combinations that are not configured are not considered in
this instruction.
R
X
X1OutFw
X1InFw
1
RLdOutFw
RLdInFw
RLdOutRv
RLdInRv
2
3
4
X1InRv
IEC09000226_1_en.vsd
IEC09000226 V1 EN
Figure 10: Operating principle and characteristic of the power swing detection
function (settings parameters in italic)
Where:
RLdInFw =
RLdOutFw · kLdRFw
RLdInRv =
RLdOutRv · kLdRRv
X1OutFw =
X1InFw + (RLdOutFw -
RLdInFw)
X1OutRv =
X1InRv + (RLdOutFw -
RLdInFw)
1MRK 502 049-UEN A Section 6
Testing functionality
49
Commissioning manual
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