ABB Relion 670 Series REL670 Commissioning Manual page 123

1MRK 506 355-UEN A
Line distance protection REL670 2.1 IEC
Commissioning manual
Testing functionality by secondary injection
RLdOutFw and RLdOutRv and the inner reactive boarder in forward and reverse
direction X1InFw and X1InRv. See figure 28.
The corresponding resistive border 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 selectivity plan and a second part to verify the operation of
ZMRPSB. The proposed test points for validation of the settings are numbered
according to figure 28
Test of the interactions or combinations that are not configured are not considered in
this instruction.
X1OutFw
X1InFw
RLdOutRv
2
RLdInRv
X1OutRv
IEC09000226 V1 EN
Figure 28: Operating principle and characteristic of the power swing detection
function (settings parameters in italic)
Where:
RLdOutFw · kLdRFw
RLdInFw =
RLdInRv = RLdOutRv · kLdRRv
X1InFw + (RLdOutFw - RLdInFw)
X1OutFw =
X1OutRv = X1InRv + (RLdOutFw - RLdInFw)
ZL
X
3
j
X1InRv
4
Section 10
j
R
1
RLdOutFw
RLdInFw
IEC09000226_1_en.vsd
117