Testing The Block Input, Interaction Between Fdpspdis (21) Or Frpspdis (21) And Zmrpsb (78) - ABB RET670 Commissioning Manual

1MRK 504 154-UUS B
10.4.9.4 Testing the block input, interaction between FDPSPDIS (21) or FRPSPDIS (21)
and ZMRPSB (78)
Precondition
The BLOCK input is configured and connected to PHG_FLT output on the FDPSPDIS (21) or
FRPSPDIS (21) function.
1. Make a test sequence so that a single phase-to-ground-fault occurs after that the trajectory
of the impedance has passed the outer boundary but not the inner boundary of the power
swing detection function ZMRPSB (68). Use the result from test of ZMRPSB (68) above to
instance when the fault shall be applied.
2. Start the test sequence by continuously reducing the voltage and observe that the output
signal ZOUT may come, but not PICKUP.
If the input I0CHECK is configured (connected to output signal PHG_FLT on FDPSPDIS (21) or
FRPSPDIS (21), the test of inhibit of ZMRPSB (68) at ground-fault during power swing can be
done in the same way as for test of
the input TRSP is activated at the same time as the input I0CHECK during power swing.
10.4.9.5 Completing the test
Continue to test another function or end the test by changing the
Restore connections and settings to their original values, if they were changed for testing
purposes.
10.4.10 Power swing logic PSLPSCH
Prepare the IED for verification of settings as outlined in section
"Preparing for test"
Most readily available test equipment does not permit simulation of power-swing conditions and
the simultaneous occurrence of different faults with controlled fault impedance. For this reason it
is necessary to enable the logic by connecting the PUPSD input signal to some other functional
signal, which is used for testing purposes.
Make sure that the existing configuration permits monitoring of the CS, TRIP signals on the binary
outputs of the IED. If not, configure connections to unused binary outputs, for test purposes.
10.4.10.1 Testing the carrier send and trip signals
Procedure
1. Set the operation of all distance zones, which are supposed to be blocked by the operation of
ZMRPSB (78), to
2. Configure the PUPSD functional inputs to the TRIP output of the underreaching power-swing
zone, if the underreaching communication scheme is used.
3. Start instantaneously any kind of fault within the underreaching power-swing zone and
check, that:
•
Commissioning manual
in this chapter.
Disabled .
The CS signal appears after the time delay, which is equal to the sum of set time delays
for the underreaching zone
tR1 . The inhibit of ZMRPSB (68) shall be instantaneous if
tnPP or tnPG (dependent on the type of fault) and for the
Testing functionality by secondary injection
TestMode setting to Disabled .
"Requirements" and section
Section 10
M13888-73 v7
M13888-99 v5
M14946-2 v4
M14946-8 v3
111