Testing The Carrier Send And Trip Signals; Testing The Influence Of The Residual Overcurrent Protection; Checking The Underreaching Zone - ABB Relion 670 Series Commissioning Manual

1MRK 504 165-UEN E
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, to
2. Configure the STPSD 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 STPSD input to connect to the output START 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) operate time of the carrier acceleration zone (approximately
30ms).
11.4.10.2

Testing the influence of the residual overcurrent protection

Additionally connect the IED according to the test instructions for the four step residual
overcurrent protection function EF4PTOC, if the Power swing logic (PSLPSCH) is configured in
a way that is controlled by this protection.
Procedure
1. Initiate a single phase-to-earth fault within both power-swing zones.
Make sure that none of CS or TRIP output signals appear after the time delays
tTrip .
BLKZMUR must appear together with the fault and must remain active until the fault has
been switched off plus the time delay, as set on the
2. Initiate a phase-to-phase fault within the operating area of both power-swing zones.
Make sure that CS and TRIP output signals appear after the time delays
3. Switch the operation of the zone 1 distance protection function on and fulfill all the
conditions for single-pole autoreclosing.
4. Simulate a single phase-to-earth fault within the reach of zone 1 and both power-swing
zones.
The fault should cause a single-pole tripping with the normal operating time of zone 1.
5. Repeat the fault within the dead time of single-pole autoreclosing.
Make sure, that PSLPSCH generates a BLKZMUR signal and no CS and TRIP.
11.4.10.3

Checking the underreaching zone

Procedure
1. Set the operation of all normal distance protection zones to
2. Simulate a fault without fault resistance in the middle of distance protection zone 1.
Transformer protection RET670
Commissioning manual
Off .
The CS signal appears after the time delay, which is equal to the sum of set time
delays for the underreaching zone
and for the carrier send security timer
underreaching zone (approximately 30ms).
The TRIP signal appears after the time delay, which is equal to the sum of set time
delays for the underreaching zone
and for the trip security timer
underreaching zone (approximately 30ms).
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Testing functionality by secondary injection
tnPP or tnPE (dependent on the type of fault)
tCS . Also add the usual operate time for the
tnPP or tnPE (dependent on the type of fault)
tTrip . Also add the usual operate time for the
tBlkTr timer.
Section 11
tTrip .
tCS and
tCS .
On .
M14946-8 v3
M14946-28 v5
M14946-49 v3
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