Toshiba GRL100-701B Instruction Manual page 79

DEF POP, DEF UOP and DEF PUP scheme logic
Figure 2.4.1.3 shows the scheme logic of the DEF POP and DEF UOP.
TDERC
t 0
DEFR
TDEFC
t 0
DEFF
0 - 300ms
R1-CR-DEF
(POP)
R1-CR-DEF
1
(UOP)
R2-CR-DEF
(POP)
R2-CR-DEF
1
(UOP)
[TERM]
(+)
"2TERM"
When the PUP+DEF scheme logic is selected, the DEF scheme logic is constructed same as the
DEF POP scheme logic in Figure 2.4.1.3.
The signal transmitted is a trip permission signal for the POP and a trip block signal for the UOP.
In the event of an internal fault, the POP transmits a signal, while the UOP stops transmission. In
Figure 2.4.1.3, a signal is transmitted when CS becomes 1, and when the signal is received
CR-DEF becomes 1.
When the DEFF operates, CS becomes 1 for the POP and a signal (that is, a trip permission signal)
is transmitted. For the UOP, CS becomes 0 and transmission of the signal (that is, a trip block
signal) is stopped.
When a signal is received in the POP, or no signal is received in the UOP, tripping is executed on
condition that the DEFF has operated. In order to assure tripping of the remote terminal,
transmission of a trip permission signal or stoppage of a trip block signal continues for the TSBCT
setting time even after the DEFF reset.
The DEFR is used for the current reversal logic in the same manner as reverse looking Z4 in the
distance protection (for the current reversal, refer to Section 2.3.2.6).
When operation of the DEFR and no-operation of the DEFF continue for 20 ms or more, even if
the DEFF operates or the DEFR is reset later, tripping of the local terminal or transmission of the
trip permission signal is blocked for the TREBK setting time.
The POP or UOP can be set for instantaneous operation or delayed operation by setting on-delay
timer TDEFC and TDERC.
The DEF command protection is provided with an echo function and weak infeed trip function.
TREBK
t 0 0 t
20ms
0.01 – 10.00s
&
CS (Carrier send) signal
Signal No.
≥1
R1-CR-DEF: Trip permission signal from the remote terminal 1 in 3 terminal application,
or Trip permission signal from remote terminal in 2 terminal application.
Signal No. Signal name
1856:
1857:
R2-CR-DEF: Trip permission signal from the remote terminal 2 in 3 terminal application.
Signal No. Signal name
1864:
1865:
Figure 2.4.1.3 DEF POP and DEF UOP Scheme Logic
 78 
≥1
&
TSBCT
0
0.00 – 1.00s
&
&
Signal name
886: CAR-S for Distance and DEF command protection (CH1)
887: DECAR-S for DEF command protection (CH2)
Description
CAR.R1-1 Trip carrier signal from remote terminal 1 (CH1)
CAR.R1-2 Trip carrier signal from remote terminal 1 (CH2)
Description
CAR.R2-1 Trip carrier signal from remote terminal 2 (CH1)
CAR.R2-2 Trip carrier signal from remote terminal 2 (CH2)
6 F 2 S 0 8 5 0
CS
≥1
POP
1
UOP
t
S-TRIP
M-TRIP