ABB Relion 670 Series Commissioning Manual page 139

1MRK 506 371-UUS E
6. Steps
exist a two phase power swing during single pole autoreclosing time and then switched-on-
to the persistent phase-to-earth fault after single pole autoreclosing time.
7. By doing this, the output signal START will be inhibited.
8. If I0CHECK appears the expiration of a timer
and thereby, the output signal START will be maintained as long as the power swing exists in
the power system.
11.4.9.2 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.
11.4.10 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.
11.4.10.1 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:
•
•
4. Simulate the receiving of the carrier signal so that the functional input signal CR becomes a
logical one.
5. Configure the PUPSD input to connect to the output PICKUP of the carrier accelerating zone
(Power-swing overreaching zone).
6. Initiate any kind of fault within the carrier accelerating zone and check that the TRIP signal
appears after the time, which is equal to the time delay set on the trip timer
Also consider the (average) trip time of the carrier acceleration zone (approximately 30ms).
Line distance protection REL670
Commissioning manual
4 and 5 must be performed before the expiration of set time delay of
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
carrier send security timer
(approximately 30ms).
The TRIP signal appears after the time delay, which is equal to the sum of set time
delays for the underreaching zone
for the trip security timer
zone (approximately 30ms).
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tEF , the condition will be seen as power swing
tnPP or tnPG (dependent on the type of fault) and for the
tCS . Also add the usual trip time for the underreaching zone
tnPP or tnPG (dependent on the type of fault) and
tTrip . Also add the usual operate time for the underreaching
Testing functionality by secondary injection
tEF . There may
TESTMODE setting to Disabled .
"Requirements" and section
tTrip .
Section 11
M13888-99 v5
M14946-2 v4
M14946-8 v3
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