ABB REL670 - Power Swing Detection (RPSB, 78)

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Distance protection Chapter 11
Verifying settings by secondary
injection
Measurements/Monitoring/Voltage phasors
3. Repeat steps 1to 2to find the operate values for the remaining test
points according to figures 28
, 29 and 30and to table 30.
Note, that if the shaped load encroachment characteristic is not activated
OperationLdCh=Off then the test points 4, 5, 6 and 7 can be replaced by
number 12.
4. Repeat steps to to find the operate value for the phase to phase fault
in L1 — L2 according to figure and compare with table 30
.
Note, that if the shaped load encroachment characteristic is not activated
OperationLdCh=Off then the test points 4, 5 and 6 can be replaced by
number 12.
5. Repeat steps to to find the operate value of a three phase fault ac-
cording to figure
and compare the result with table30.
6. Continue to test another function or complete the test by setting the
test mode to off.
5.3 Power swing detection (RPSB, 78)
The aim of this instruction is to verify the settings of the PSD function and to verify that the PSD
covers all impedance zones that should be blocked by the PSD.
Prepare the IED for verification of settings as outlined in section 1 "Overview" and section 2
"Preparing for test" in this chapter.
Before starting this process, all impedance measuring zones shall be set and in operation. The
inner zone of the PSD must cover all zones to be blocked by the PSD by at least 10% margin.
See figure 31
below.