Completing The Test; Directional Overpower Protection Goppdop; Verifying The Settings - ABB RET670 Installation And Commissioning Manual

Section 13
Verifying settings by secondary injection
13.6.9.2
13.6.10
13.6.10.1
154
5. Increase the current to 100% of IBase.
6. Switch the current off 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 Test mode setting
to Off. Restore connections and settings to their original values, if they were
changed for testing purposes.

Directional overpower protection GOPPDOP

Prepare the IED for verification of settings as outlined in section
section "Preparing for test"

Verifying the settings

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 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 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
2 to 6 for the second stage.
in this chapter.
2 to 6 for the second stage.
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