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
6.3.11.2
Completing the test
Continue to test another function or end the testing by setting the parameter
TestMode
to
Off
under
Main menu/Tests/IED test mode/1:TESTMODE
. If
another function is tested, then set the parameter
Blocked
to
No
under
Main menu/
Tests/Function test modes/Current/GUPPDUP(37,P<)/1:GUPPDUP
for the
function, or for each individual function in a chain, to be tested next. Remember to
set the parameter
Blocked
to
Yes
, for each individual function that has been tested.
6.3.12
Directional overpower protection GOPPDOP
Prepare the IED for verification of settings as outlined in
.
Values of the logical signals for GOPPDOP are available on the local HMI under
Main menu/Tests/Function status/Current/GOPPDOP(32,P>)/X:GOPPDOP
.
The Signal Monitoring in PCM600 shows the same signals that are available on the
local HMI.
6.3.12.1
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.
Use the formulas stated in
for the different calculation modes used.
The set mode
Mode
can be found under
Main menu/Settings/IED Settings/
Current/GOPPDOP(32,P>)/1:GOPPDOP/General
.
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
1MRK 511 248-UEN -
Section 6
Testing functionality
59
Commissioning Manual
