Verifying The Settings - Hitachi Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
11.14.2.1

Verifying the settings

Common test equipment can be used to determine the injection of current and voltage and time
measurement.
Verification of EAFACC & ERFACC output
1. Connect the test set for injection of three-phase currents and three-phase voltage to the
appropriate current and voltage terminals of the IED.
2. Ensure the instantaneous values of active and reactive power from CVMMXN function block are
connected to ETPMMTR function block active and reactive power inputs.
3. Enable the EnaAcc setting and set tEnergy as 1 minute.
4. Activate the STARTACC input and supply the IED with three-phase currents and voltages at their
rated value.
5. Check that the ACCINPRG signal appears continuously.
6. Note the EAFACC and ERFACCvalue after 1 minute and compare it with calculated energy value.
7. Similarly check after each 1 minute whether the calculated integrated energy value and EAFACC
and ERFACC outputs are matching.
8. After some time (multiple of minute) remove the current and voltage input from CVMMXN
function block.
9. Check the EAFACC and ERFACC output in the next 1 minute cycle for the retaining the same
value.
10. Activate STOPACC input after some time and supply the IED with same current and voltage.
11. Check that the ACCINPRG signal disappears immediately and EAFACC and ERFACC outputs also
stop updating.
12. Similarly the testing can be done for EAFACC and ERFACC outputs by changing the power inputs
directions through direction settings.
Verification of MAXPAFD & MAXPRFD outputs
1. Repeat the above test steps 1 to 2.
2. Set tEnergy setting as 1 minute and supply the IED with three-phase currents and voltages at
their rated value till 1 minute.
3. Check the MAXPAFD and MAXPRFD outputs after 1 minute and compare it with last 1 minute
average power values.
4. Increase either three-phase current or voltage above the last 1 minute value.
5. After 1 minute check the MAXPAFD and MAXPRFD whether it is showing the last 1 minute
average power value as maximum.
6. Next 1 minute cycle reduce the current or voltage below previous value.
7. Check after 1 minute whether the MAXPAFD and MAXPRFD outputs are retaining the old
maximum value.
8. Similarly the testing can be done for MAXPAFD and MAXPRFD outputs by changing the power
inputs directions through direction settings.
Verification of EAFALM & ERFALM outputs
1. Repeat the above test steps 1 to 2.
2. Set tEnergy setting as 1 minute and supply the IED with three-phase currents and voltages at
their rated value till 1 minute.
3. Ensure that the active and reactive energy values are less than the EALim and ERLim setting
default values respectively.
4. Check that EAFALM and ERFALM are low.
5. Increase the supply currents or voltage in next 1 minute cycle such that the active or reactive
energy values are greater than the EALim and ERLim setting default values respectively.
6. Check that EAFALM and ERFALM are high after 1 minute.
7. Similarly the testing can be done for EARALM and ERRALM outputs by changing the power inputs
directions through direction settings.
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