12.4.13.2
Completing the test
SEMOD158873-46 v3
Continue to test another function or end the test by changing the
TestMode setting to Off.
Restore connections and settings to their original values, if they were changed for testing
purposes.
12.4.14
Phase preference logic PPLPHIZ
GUID-BD8EE7A0-710D-49C8-9B56-CB908BAF2C59 v7
Prepare the IED for verification of settings outlined in
section "Requirements" and section
"Preparing for test" in this chapter.
The Phase preference logic function PPLPHIZ is tested with a three-phase testing equipment
for distance protections. PPLPHIZ is tested in co-operation with the Distance protection zone,
quadrilateral characteristic function ZMQPDIS. The distance protection and the phase
preference logic shall be set to values according to the real set values to be used. The test is
made by means of injection of voltage and current where the amplitude of both current and
voltage and the phase angle between the voltage and current can be controlled.
During the test the following binary signals (outputs) shall be monitored:
•
Trip signal from distance protection
•
Start signal from phase preference logic
1.
Connect the test set for injection of voltage and current.
2.
Inject voltages and currents corresponding to a phase-to-phase to earth fault within zone
1 of the distance protection function. In the test one of the current inputs (one of the
faulted phases) is disconnected. The remaining current is the fault current out on the
protected line. All combinations of two phase-to-earth faults with one phase current are
tested. The result shall be according to table
. It should be checked that the fault will
give phase-to-phase voltage, phase-to-earth voltage, zero-sequence voltage and phase
current so that the conditions set for the logic are fulfilled.
Table 31: Operation at different combinations of faults and operation mode
OperMode
Fault type/Faulted phase current to the IED
L1L2N/IL1
L1L2N/IL2
L2L3N/IL2
L2L3N/IL3
L3L3N/IL1
L3L1N/IL3
No Filter
Trip
Trip
Trip
Trip
Trip
Trip
No Pref
Trip
Trip
Trip
Trip
Trip
Trip
1231c
Trip
No Trip
Trip
No Trip
No Trip
Trip
1321c
No Trip
Trip
No Trip
Trip
Trip
No Trip
123a
Trip
No Trip
Trip
No Trip
Trip
No Trip
132a
Trip
No Trip
No Trip
Trip
Trip
No Trip
213a
No Trip
Trip
Trip
No Trip
Trip
No Trip
231a
No Trip
Trip
Trip
No Trip
No Trip
Trip
312a
Trip
No Trip
No Trip
Trip
No Trip
Trip
321a
No Trip
Trip
No Trip
Trip
No Trip
Trip
12.4.14.1
Completing the test
GUID-8BD66BC8-AAC3-41C4-B819-B159361688D2 v4
Continue to test another function or end the test by changing the
TestMode setting to Off.
Restore connections and settings to their original values, if they were changed for testing
purposes.
1MRK 502 067-UEN B
Section 12
Testing functionality by secondary injection
149
Commissioning manual