Completing The Test; Capacitor Bank Protection Cbpgapc - ABB Relion 670 Series Commissioning Manual

Section 10
Testing functionality by secondary injection
10.3.9.2
10.3.10
98
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 Angle1 + 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 PICKUP1 signal, pickup 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

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.

Capacitor bank protection CBPGAPC

Prepare the IED for verification of settings as outlined in section
in this chapter.
In this section it is shown how to test the capacitor bank protection function
CBPGAPC for application on a 50Hz, 200MVAr, 400kV SCB with 500/1A ratio CT.
Note that such SCB is shown in the application manual for this
function. The same procedure can be used to test SCB with some other
rating and different CT ratio.
As calculated in the application manual the base current for this particular SCB will be
289A on the primary side and 0.578A on the CT secondary side. Before any testing is
commenced make sure that setting IBase for this function is set to 289A (that is, setting
for the base current corresponds to the rated current of the protected SCB). It will be
also assumed that all other settings have values as shown in the setting example in the
application manual for this SCB.
Test equipment
Connect the secondary test set to the CT inputs on the IED dedicated for the SCB
currents. Single- or three-phase test equipment can be used but it may be required to
have facility to vary the frequency of the injected current signal(s).
2 to 6 for the second stage.
"Preparing for test"
Busbar protection REB670 2.0 ANSI
1MRK 505 304-UUS -
Commissioning Manual