If the input I0CHECK is configured (connected to output signal STPE on FDPSPDIS or
FRPSPDIS, the test of inhibit of ZMRPSB at earth-fault during power swing can be done in
the same way as for test of
tR1. The inhibit of ZMRPSB shall be instantaneous if the input
TRSP is activated at the same time as the input I0CHECK during power swing.
12.4.9.5
Completing the test
M13888-99 v5
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.
12.4.10
Pole slip protection PSPPPAM
SEMOD175096-3 v2
Prepare the IED for verification of settings as outlined in section
in this chapter.
12.4.10.1
Verifying the settings
SEMOD175096-7 v3
It is assumed that setting of the pole slip protection function PSPPPAM is done according to
impedances as seen in figure
The test is done by means of injection of three-phase current and three-phase voltage from a
modern test device. This test device shall be able to give voltage and current with the
possibility to change voltage and current amplitude and the angle between the injected
voltage and current. The parameter setting shall be according to the real application chosen
values.
Procedure
1.
Feed the IED with current and voltage corresponding to a normal operation point
Injected voltage U equal to base voltage (
UBase) and the injected current I equal to half
the base current (
IBase). The angle between the voltage and current shall be 0°.
2.
With maintained amplitude of the injected voltage the current amplitude and angle is
changed to a value ZC/2.
This is done with a speed so that the final impedance is reached after 1 second. As the
injected voltage is higher than 0.92
UBase no START signal should be activated.
3.
With reduced amplitude of the injected voltage to 0.8
UBase the current amplitude and
angle is changed to a value ZC/2.
This is done with a speed so that the final impedance is reached after 1 second. As the
injected voltage is lower than 0.92
UBase the START signal should be activated.
4.
With reduced amplitude of the injected voltage to 0.8
UBase the current amplitude and
angle is changed via ZC/2 to a value corresponding to half
IBase and 180° between the
injected current and voltage.
This is done with a speed so that the final impedance is reached after 1 second. As the
injected voltage is lower than 0.92
UBase the START signal should be activated. In
addition to this the signal ZONE1 should be activated.
5.
Set
N1Limit to 1 and repeat step
.
Now the signals TRIP1 and TRIP should be activated.
6.
With reduced amplitude of the injected voltage to 0.8
UBase the current amplitude and
angle is changed via ZC + (ZA – ZC)/2 to a value corresponding to half
IBase and 180°
between the injected current and voltage.
This is done with a speed so that the final impedance is reached after 1s. As the injected
voltage is lower than 0.92
UBase the START signal should be activated. In addition to this
the signal ZONE2 should be activated.
7.
Set
N2Limit to 1 and repeat step
.
Now the signals TRIP2 and TRIP should be activated.
1MRK 502 067-UEN B
Section 12
Testing functionality by secondary injection
129
Commissioning manual
