Alstom MiCOM P546 - 1.23.3 Permissive overreach trip reinforcement (Distance option only)

Operation P54x/EN OP/La4
MiCOM P543, P544, P545 & P546 (OP) 5-65
OP
P1582ENi
&
250ms
Pole (903)
&
&
DDB:CRx Int
(494,508)
Any Z4 Element
DEF Rev Element
SET: POR Selected
DDB:Any Trip (522)
IntSig: Signal Send
DDB:Trip_3Ph (529)
1
&
SET:Reversal Guard
DDB: Aided Trip En
(501,517)
IntSig: BIK Send
t
RGD
IntSig: Echo Send
AIDED x DEF TRIP
ANY TRIP
&
SETTING Send on
Trip = Any Trip
&
SETTING Send on
Trip = Aided/ZI
SETTING Send on
Trip = None
100ms
SETTING Aided x
Distance = Disabled
ZI TRIP
1
1
&
&
AIDED x DIST TRIP
1
100ms
1
1
&
&
Any V< Operated
SET: Weak Infeed Trip En
SET: WI Echo En
DDB: VTS Slow
Block (833)
&
S
R
100ms
IntSig: Signal Send
10ms
DDB:V< A Operated 451,467
DDB:V< B Operated 452,468
DDB:V< C Operated 453,469
DDB:WI Trip C (638,648)
DDB:WI Trip A (637,647)
DDB:WI Trip B (639,649)
60ms
Weak Infeed
Snapshot
Logic
Weak Infeed Trip
SET:WI 3 PoleTripping
DDB : WI Trip 3 Ph
(642,652)
&
&
x = Scheme 1 or 2
Aided x distance Trip and aided x DEF Trip can only
be active if they are enabled for that scheme.
DDB: CB 1 Open A Ph (904)
DDB: CB 2 Open A Ph (912)
Only in P544/P546
&
&
DDB: CB 1 Open B Ph (905)
DDB: CB 2 Open B Ph (913)
Only in P544/P546
&
DDB: CB 1 Open C Ph (906)
DDB: CB 2 Open C Ph (914)
Only in P544/P546
1
DDB: CB Open 3 ph
Figure 39 POR
1.23.3 Permissive overreach trip reinforcement (Distance option only)
The
send logic in the POR scheme is done in such a way that for any trip command at the
local end, the relay sends a channel signal to the remote end(s) in order to maximize the
chances for the fault to be isolated at all ends. It should be noted that the send signal that is
generated by the ‘Any trip’ command is sent on both channels, Ch1 and Ch2, if more then
one channel is in use. This feature is termed permissive trip reinforcement, and is a
deliberate attempt to ensure that synchronous tripping occurs at all line ends.