ABB REL670 2.2 IEC, Applications Manual

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STDEF
AR1P1
&
STPSD
BLOCK
&
t
tCS
&
CSUR
CS
t
tBlkTr
&
t
tTrip
CR
CACC
>1
&
BLKZMPS
TRIP
en06000236.vsd
IEC06000236 V1 EN-US
Figure 228: Simplified logic diagram - power swing communication and tripping
logic
Configuration
SEMOD131360-17 v2
Configure the BLOCK input to any combination of conditions, which are supposed
to block the operation of logic. Connection to detected fuse failure conditions is
required as a minimum.
The STDEF functional input should be configured to the START signal of any line
earth fault overcurrent protection function within the IED. When the directional
earth fault O/C function is used an OR combination of forward and reverse
operation should be used.
Connect the AR1P1 to the output signal of the autoreclosing function, which
signals the activation of the single pole autoreclosing dead time.
The STPSD input should be connected to the starting signal of the power swing
detection (ZMRPSB) function, which becomes active in cases of detected system
oscillations.
The CSUR functional input should be connected to the starting output of the power
swing distance protection zone, which is used as a local tripping criteria during
power swings in PUTT schemes. When the POTT scheme is used (also on series
compensated networks) the local criteria and the carrier sending zone are one and
the same. It is preferred to use separate communication facilities for distance
protection and for power swing communication logic, but combination of
functionality within the same communication channel is possible as well.
Connect the CACC functional input to start output signal of the local overreaching
power swing distance protection zone, which serves as a local criteria at receiving
of carrier signal during the power swing cycle.
1MRK 506 369-UEN B
Section 8
Impedance protection
Line distance protection REL670 2.2 IEC 419
Application manual