Function Revision History; Testing The Carrier Send And Trip Signals; Testing The Influence Of The Residual Overcurrent Protection - ABB Relion 670 Series Commissioning Manual

Section 11
Testing functionality by secondary injection
11.4.10.1

Function revision history

Document
revision
A
B
C
D
E
F
G
H
J
11.4.10.2

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 Disabled.
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 tTrip.
Also consider the (average) trip time of the carrier acceleration zone (approximately 30ms).
11.4.10.3

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 (51N/67N), if the Power swing logic (PSLPSCH) is configured in a way that
is controlled by this protection.
Procedure
1. Initiate a single phase-to-ground fault within both power-swing zones.
Make sure that none of CS or TRIP output signals appear after the time delays tCS and tTrip.
140
Product History
revision
2.2.1 -
2.2.1 -
2.2.2 -
2.2.3 -
2.2.3 -
2.2.4 -
2.2.4 -
2.2.4 -
2.2.5 Deleted DO Rx
The CS signal appears after the time delay, which is equal to the sum of set time delays for
the underreaching zone tnPP or tnPG (dependent on the type of fault) and for the carrier
send security timer tCS. Also add the usual trip time for the 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 tnPP or tnPG (dependent on the type of fault) and for the trip security
timer tTrip. Also add the usual operate time for the underreaching zone (approximately
30ms).
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1MRK 504 165-UUS Rev. J
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Transformer protection RET670
Commissioning manual