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Section 11
Testing functionality by secondary injection
11.3.1.4
11.3.1.5
11.3.2
102
1.
Program the test equipment for a single-phase to ground fault and energize
FDPSPDIS (21) or FRPSDIS (21) and check that the input BLOCK on the power
swing detection function ZMRPSB (68) is activated.
2.
Make a test sequence so that a single-phase to ground fault occurs after that the
trajectory of the impedance has passed the outer and inner boundary of ZMRPSB
(68) during power swing. Use the result from test of ZMRPSB (68) above to
determine when the fault shall be applied. The ground-fault must be activated before
tR1 has elapsed.
3.
Start the sequence and observe that the PICKUP signal will not be activated.
Testing the block input, interaction between FDPSPDIS (21) or FRPSPDIS
(21) and ZMRPSB (78)
Precondition
The BLOCK input is configured and connected to PHG_FLT output on the FDPSPDIS
(21) or FRPSPDIS (21) function.
1.
Make a test sequence so that a single phase-to-ground-fault occurs after that the
trajectory of the impedance has passed the outer boundary but not the inner boundary
of the power swing detection function ZMRPSB (68). Use the result from test of
ZMRPSB (68) above to instance when the fault shall be applied.
2.
Start the test sequence by continuously reducing the voltage and observe that the
output signal ZOUT may come, but not PICKUP.
If the input I0CHECK is configured (connected to output signal PHG_FLT on
FDPSPDIS (21) or FRPSPDIS (21), the test of inhibit of ZMRPSB (68) at ground-
fault during power swing can be done in the same way as for test of tR1. The inhibit
of ZMRPSB (68) shall be instantaneous if the input TRSP is activated at the same
time as the input I0CHECK during power swing.
Completing the test
Continue to test another function or end the test by changing the TestMode setting to
Disabled. Restore connections and settings to their original values, if they were changed
for testing purposes.
Out-of-step protection OOSPPAM
The out-of-step protection OOSPPAM (78) function in the IED can be used for both
generator protection and as well for line protection applications.
The main purpose of the OOSPPAM (78) function is to detect, evaluate, and take the
required action during pole slipping occurrences in the power system.
1MRK 511 366-UUS -
Commissioning manual
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