ABB RELION 670 SERIES Applications Manual page 454

Section 8
Impedance protection
448
PUDOG
AND
AR1P1
PUPSD
AND
BLOCK
CSUR
PLTR_CRD
CR
ANSI06000236 V1 EN
Figure 230: Simplified logic diagram - power swing communication and tripping logic
Configuration
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 PUDOG functional input should be configured to the PICKUP signal of any line
ground fault overcurrent protection function within the IED. When the directional ground
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 PUPSD input should be connected to the pickup signal of the power swing detection
(ZMRPSB, 68) function, which becomes active in cases of detected system oscillations.
The CSUR functional input should be connected to the pickup 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.
AND
0-tCS
0
AND
0
0-tBlkTr
0-tTrip
0
OR
AND
1MRK 506 369-UUS -
CS
BLKZMUR
TRIP
en06000236_ansi.en
Line distance protection REL670 2.2 ANSI
Application manual