Completing The Test; Pole Discordance Protection Ccrpld; Verifying The Settings - ABB Relion 650 Series Commissioning Manual

Section 5
Testing functionality
5.4.6.8
5.4.7
5.4.7.1
46
6. Apply the fault and the start again. The value of current should be below the
set value I>BlkCont.
7. Arrange disconnection of BC closed signal(s) well before set back-up trip
time t2. It simulates a correct CB tripping.
8. Verify that back-up trip is not achieved. Re-trip can appear for example, due
to selection "Re-trip without current check".
9. Disconnect injected AC and start input signals.

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/<Function group>/<Function>/<1:Function> 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.

Pole discordance protection CCRPLD

Prepare the IED for verification of settings as outlined in
verify settings".
Values of the logical signals are available on the local HMI under: Main menu/
Tests/Function status/<Function group>/<Function>/<1:Function>. The Signal
monitoring tool in PCM600 shows the same signals that are available on the LHMI.

Verifying the settings

Procedure:
1. When the CCRPLD function is set for external, set setting ContSel to PD
signal from CB under: Main menu/Settings/IED Settings/Current/
CCRPLD/1:CCRPLD to activate the logic that detects pole discordance
when external pole discordance signalling is used (input EXTPDIND) in the
application configuration.
2. Activate the input EXTPDIND on the CCRPLD function block, and measure
the operating time of the CCRPLD protection.
3. Compare the measured time with the set value tTrip.
4. Reset the EXTPDIND input.
5. When CCRPLD function is set for unsymmetry current detection with CB
monitoring, set setting CurrSel under Main menu/Settings/IED Settings/
Current/CCRPLD/1:CCRPLD to CB oper monitor.
Use the TRIP signal from the configured binary output to stop the timer.
6. Activate input CLOSECMD on CCRPLD function block and measure the
operating time of the CCRPLD protection.
7. Set measured current in one phase to 110% of CurrRelLevel
1MRK 504 109-UEN -
4.1 "Preparing the IED to
RET650
Commissioning Manual