Completing The Test; Directional Overpower Protection Goppdop (32); Verifying The Settings - ABB RET670 Commissioning Manual

1MRK 504 165-UUS -
11.5.10.2
11.5.11
11.5.11.1
Transformer protection RET670 2.2 ANSI
Commissioning manual
Mode
Set value:
A
B
C
2. Adjust the injected current and voltage to the set values in % of IBase and VBase
(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 0°. Decrease the
current slowly until the PICKUP1 signal, pickup of stage 1, is activated.
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 TESTMODE setting to
Disabled. Restore connections and settings to their original values, if they were changed
for testing purposes.

Directional overpower protection GOPPDOP (32)

Prepare the IED for verification of settings outlined in Section
verify settings".

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
Testing functionality by secondary injection
Formula used for complex power calculation
*
= × ×
S 3 V I
A A
EQUATION2061-ANSI V1 EN
*
= × ×
S 3 V I
B B
EQUATION2062-ANSI V1 EN
*
= × ×
S 3 V I
C C
EQUATION2063-ANSI V1 EN
2 to 6 for the second stage.
Section 11
(Equation 86)
(Equation 87)
(Equation 88)
"Preparing the IED to
199