Alstom MiCOM P54 Series - 7. P544;P546 CIRCUIT BREAKER CONTROL AND AUTO-RECLOSE LOGIC: INTERNAL SIGNAL DEFIN ITIONS

Operation P54x/EN OP/B94
MiCOM P543, P544, P545, P546 (OP) 5-263
OP
7. P544/P546 CIRCUIT BREAKER CONTROL AND AUTO-RECLOSE LOGIC:
INTERNAL SIGNAL DEFIN ITIONS
The breaker control functionality of the P544/P546 is described in the figures in the previous
section. Within that description a number of signals that are internal to the logic of the circuit
breaker control are featured. Unlike the DDB signals, these internal signals cannot be
accessed using the programmable scheme logic. They are hard-coded into the application
software. This section lists those signals and provides a brief description to aid
understanding.
Note: This section lists only the hard-coded internal signals used in the
circuit breaker control. The DDB signals featuring in the logic are
described in the programmable logic chapter (P54x_EN_PL) of this
manual.
Name Description
3PDTCOMP Int Sig: Three phase dead time complete
AR DISABLED Int Sig: Overall autoreclosing disabled
BAR CB1 Int Sig from “Autoreclose Lockout – CB1”
BAR CB2 Int Sig from “Autoreclose Lockout – CB2”
CB1 3PDTCOMP Int Sig: CB1 3PAR dead time complete
CB1 3PFTCOMP Int Sig: CB1 3PAR follower time complete
CB1 3POK Int Sig: CB1 OK for 3P AR (leader or
follower)
CB1 ARSUCC Int Sig: CB1 auto-reclose sucessful
CB1 CS1 AngHigh- Int Sig + DDB: Line/Bus1 phase angle in
range:
-CB1 CS1 Angle to -180deg
CB1 CS1 AngHigh+ Int Sig + DDB: Line/Bus1 phase angle in
range:
+CB1 CS1 Angle to +180deg
CB1 CS1 FL<FB Int Sig + DDB: Bus1 F > (Line F + “CB1
CS1 SlipFreqf”)
CB1 CS1 FL>FB Int Sig + DDB: Line F > (Bus1 F + “CB1
CS1 SlipFreqf”)
CB1 CS1 OK Int Sig + DDB: CB1 CS1 is enabled and
Line and Bus 1 voltages meet CB1 CS1
settings
CB1 CS1 SlipF< Int Sig + DDB: Line-Bus 1 slip freq < CB1
CS1 SlipFreq setting
CB1 CS1 SlipF> Int Sig + DDB: Line-Bus 1 slip freq > CB1
CS1 SlipFreq setting
CB1 CS1 VL<VB Int Sig + DDB: Bus1 V > (Line V + “CB1
CS1 VDiff”)
CB1 CS1 VL>VB Int Sig + DDB: Line V > (Bus1 V + “CB1
CS1 VDiff”)
CB1 CS2AngHigh- Int Sig + DDB: Line/Bus1 phase angle in
range:
-CB1 CS2 Angle to -180deg