ABB Relion 670 series - Evolving Fault

CLOSE COMMAND
OR
SMBRREC (79)
OR
CCRBRF (50BF)
BJ-TRIP
ZCVPSOF-TRIP
INHIBIT
UNSUCCL
BJTRIP
ANSI05000316_2_en.vsd
SMPPTRC (94)
SMBO
AND
RESET LOCK-OUT
OR
OR
SESRSYN (25)
SOFTWARE
OR IO RESET
AUTO STOP
MAN ENOK
MAN CLOSE
SMBRREC (79) CLOSE
SETLKOUT
CLLOUT
RSTLOUT
ANSI05000316 V2 EN
Figure 310: Lock-out arranged with internal logic with manual closing going through
in IED
15.2.2.20 Evolving fault
An evolving fault starts as a single-phase fault which leads to single-pole tripping and then
the fault spreads to another phase. The second fault is then cleared by three-pole tripping.
The auto recloser will first receive a start signal (START) without any three-phase signal
(TR3P). The auto recloser will start a single-phase auto reclosing sequence, if
programmed to do so. At the evolving fault clearance there will be a new START signal and
three-phase trip information, TR3P. The single-phase auto reclosing sequence will then be
stopped, and instead the timer, t1 3Ph, for three-pole auto reclosing will be started from
zero. The sequence will continue as a three-pole auto reclosing sequence, if it is a selected
alternative reclosing mode. The second fault which can be single-phase is tripped three-
pole because the trip function (SMPPTRC) in the IED has an evolving fault timer which
ensures that second fault is always tripped three-pole. For other types of relays where the
relays do not include this function, the PREP3PH output (or the inverted PERMIT1PH
output) is used to prepare the other sub-system for three-phase tripping. This signal will,
for evolving fault situations, be activated a short time after the first trip has reset and will
thus ensure that new starts (trips) will be three phase.
15.2.2.21 Automatic continuation of the auto reclosing sequence
The auto recloser can be programmed to proceed to the next auto reclosing shots (if
multiple shots are selected) even if start signals are not received from protection functions,
but the circuit breaker is still not closed. This is done by setting AutoCont = Enabled and
tAutoContWait to the required delay for the function to proceed without a new start.
1MRK 506 369-UUS - Section 15
Control
Line distance protection REL670 2.2 ANSI 665
Application manual