12.5.13.2
Completing the test
SEMOD175027-15 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.
12.5.14
Directional overpower protection GOPPDOP
SEMOD175058-3 v5
Prepare the IED for verification of settings as outlined in section
in this chapter.
12.5.14.1
Verifying the settings
SEMOD175058-7 v6
The overpower protection 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 analog outputs of active and reactive power shall be monitored.
1.
Connect the test set for injection of voltage and current corresponding to the mode to
be used in the application. If a three phase test set is available this could be used for all
the modes. If a single phase current/voltage test set is available the test set should be
connected to a selected input for one phase current and voltage.
2.
Adjust the injected current and voltage to the set rated values in % of
IBase and UBase
(converted to secondary current and voltage). The angle between the injected current
and voltage shall be set equal to the set direction
Angle1, angle for stage 1 (equal to 0° for
low forward power protection and equal to 180° for reverse power protection). Check
that the monitored active power is equal to 100% of rated power and that the reactive
power is equal to 0% of rated power.
3.
Change the angle between the injected current and voltage to
90°. Check that
the monitored active power is equal to 0% of rated power and that the reactive power is
equal to 100% of rated power.
4.
Change the angle between the injected current and voltage back to
Angle1 value. Increase
the current slowly from 0 until the START1 signal, start of stage 1, is activated. Check the
injected power and compare it to the set value
Power1, power setting for stage 1 in % of
Sbase.
5.
Increase the current to 100% of
IBase and switch the current off.
6.
Switch the current on and measure the time for activation of TRIP1, trip of stage 1.
7.
If a second stage is used, repeat steps
12.5.14.2
Completing the test
SEMOD175058-66 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.
12.5.15
Broken conductor check BRCPTOC
SEMOD175021-3 v5
Prepare the IED for verification of settings as outlined in section
in this chapter.
12.5.15.1
Measuring the operate and time limit of set values
SEMOD175021-7 v6
1MRK 502 067-UEN B
Section 12
Testing functionality by secondary injection
175
Commissioning manual
