Power-Swing Blocking; Supplementary Information For Binary Inputs - ABB RELION REB500 Technical Manual

Section 5
Bay protection functions
TripMode
Depending on the setting of the parameter
• tripping is phase-selective, controlled by the binary input 1PolAR (for 1phTrip), always
three-phase (for 3phTrip)
• tripping is three-phase after the time
SOTF Mode
Access is gained to the switch-onto-fault logic settings by selecting the parameter
Mode . The alternatives presented are whether the switch-onto-fault logic should trip on the
basis of the non-directional underimpedance starters or the overreaching zone.
This logic is enabled either by the undervoltage function delayed by 10 s or 200 ms or the
binary inputs Deadline and Manual close.
Two signaling outputs Start SOTF and Trip SOTF are associated with the switch-onto-fault
logic. Start SOTF is intended for blocking the autoreclosure function and Trip SOTF signals
that tripping was by the switch-onto-fault logic.
SOTF 10 sec
The parameter
Deadline are enabled after 10 s (
fast autoreclosure (Fast AR). Tripping in this case is thus based on the decisions of the
starters alone.
t1EvolFaults
The setting of the parameter
an evolving fault causes a three-phase trip.
5.1.6.8

Power-swing blocking

Only the parameter
maintained has to be set in the POWER-SWING BLOCKING sub-menu. The setting range is 0 to
10 s in steps of 0.01. Tripping is enabled again at the latest at the end of this time.
The power-swing blocking function is disabled when
applied to the binary input Ext Blk PSB.
5.1.6.9

Supplementary information for binary inputs

ChgMeasDir
Applying a signal to this input reverses the direction of measurement for the entire distance
protection function (all zones).
Ext Blk Dist
This input blocks the entire distance protection function. Blocking is signaled by Dist blocked
and after 12 s by DelDistBlk. Only the backup overcurrent protection (I O/C) then remains
active.
Ext UZ Blk
This input blocks the underimpedance starters, the neutral voltage starter (U
measurement for
operation.
50
SOTF10sec determines whether the undervoltage function and the binary input
on ) or 200 ms ( off ). off indicates switching onto a fault after
t1EvolFaults determines the time during which the detection of
tPSblock for the time during which the power-swing blocking signal is
Weak and the reverse measurement. The overcurrent starters (OC) remain in
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TripMode :
Delay (3) (for 3phTripDel3)
tPSblock is set to zero or a logical 1 is
1MRK 505 406-UEN B
SOTF
GUID-290AFE08-EF8B-49ED-BB97-D443777923B7 v1
GUID-1BA1A03D-546C-4875-8F2C-AC972DAE2406 v1
), the
0
Bay protection functions REB500
Technical manual