Power Swing Detection Zmrpsb - ABB RET670 Installation And Commissioning Manual

Section 13
Verifying settings by secondary injection
13.5.5
128

Power swing detection ZMRPSB

The aim is to verify that the settings of the power swing detection function
ZMRPSB is according to the setting table and to verify that ZMRPSB operates as
expected.
Prepare the IED for verification of settings as outlined in section
section "Preparing for test"
Before starting this process, all impedance measuring zones shall be set and in
operation. Test the outer resistive boarder in forward and reverse direction,
RLdOutFw and RLdOutRv and the inner reactive boarder in forward and reverse
direction X1InFw and X1InRv. See figure 58.
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 to be blocked by ZMRPSB 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
Test of the interactions or combinations that are not configured are not considered
in this instruction.
in this chapter.
58
1MRK 504 088-UEN C
"Overview"
Installation and commissioning manual
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