GE Multilin D60 Line Distance Protection System 5-287
5 SETTINGS 5.7 CONTROL ELEMENTS
5
Figure 5–144: SINGLE-POLE AUTORECLOSE LOGIC (Sheet 1 of 3)
In runtime, AR mode can be changed through the mode control logic as shown in the following diagram. Initially, the autore-
closer runs in the mode as per AR MODE setting. Then the relay checks the AR activation inputs in each protection pass.
The AR mode is switched to the new mode when
• Only one of four activation inputs is high, and
• AP RIP operand is low, and
• The mode to be activated is different from the current AR mode
The logic allows activation of one mode at a time. Simultaneous multiple activations are ignored and mode switching does
not happen. However, a FlexLogic operand, AR MODE SWITCH FAIL, is asserted if either simultaneous multiple activa-
tions are initiated, or a single activation is initiated but recloser is already in progress.
AND
827089AT.CDR
Lockout
OR
AND
SETTING
Enabled = 1
Function
Off = 0
Block
FLEXLOGIC OPERAND
LINE PICKUP OP
SETTING
Off = 0
Breaker Manual Close
OR
BKR MANUAL CLOSE
from autoreclose logic sheet 3
AND
OR
SETTING
Blk Time Upon Man Cls
0
SETTING
Off = 0
1-P Init
FLEXLOGIC OPERAND
TRIP 1 POLE
OR
SETTING
Off = 0
3-P Init
FLEXLOGIC OPERAND
TRIP AR INIT 3 POLE
OR
SETTING
Off = 0
3-P TD Init
AND
AND
OR
AND
Latch
S
R
SETTING
Off = 0
Bkr 1 Pole Open
OR
BKR ONE POLE OPEN
from autoreclose logic sheet 3
OR
AND
AND
OR
SETTING
Off = 0
Bkr 3 Pole Open
OR
BKR 3 POLE OPEN
from autoreclose logic sheet 3
AND
OR
SETTING
= Protection and CB
AR Initiate Mode
AND
AND
RESET
from autoreclose logic sheet 2
CLOSE BKR1 OR BKR2
OR
OR
FLEXLOGIC OPERAND
AR SHOT COUNT > 0
OR
SETTING
Off = 0
Pause
SHOT COUNT = MAX
from autoreclose logic sheet 2
SETTING
Mode 2: 1 Pole
AR Mode
Mode 3: 3 Pole-A
Mode 4: 3 Pole-B
OR
FLEXLOGIC OPERAND
PHASE SELECT MULTI-P
SETTING
Off = 0
Multi P Fault
0
5 ms
Off = 0
Reset
OR
FLEXLOGIC OPERAND
OPEN POLE OP
BKR CLOSED
from autoreclose logic sheet 3
AND
OR
TIMER
10 s
0
AND
SETTING
OR
TIMER
Latch
S
R
FLEXLOGIC OPERAND
AR RIP
FLEXLOGIC OPERANDS
AR DISABLED
AR ENABLED
Latch
S
R
TIMER
0
1.25 cycles
EVOLVING FAULT
AR INITIATE
OR
AND
OR
OR
Latch
S
R
AND
EVOLVING FAULT
AR DISABLED
OR
OR
AND
OR
OR
AND
AND
AND
OR
SETTING
Inc Seq Time
0
OR
AND
AND
BKR FAIL TO RECLS
from autoreclose logic sheet 2
AND
AND
SETTING
3-P Dead Time 1
0
SETTING
1-P Dead Time 1
0
OR
SETTINGS
Dead T1 Extension
0
Off = 0
Extend Dead T1
OR
AND
Latch
S
R
SHOT COUNT = 1
from autoreclose logic sheet 2
OR
AND
SHOT COUNT = 2
from sheet 2
SHOT COUNT = 3
from sheet 2
OR
AND
SETTING
3-P Dead Time 2
0
SETTING
3-P Dead Time 3
0
SETTING
3-P Dead Time 4
0
AND
AND
OR
CLOSE
FLEXLOGIC OPERAND
AR LO
FLEXLOGIC OPERANDS
AR 3P/3 RIP
AR 3P/2 RIP
AR 3P/4 RIP
FLEXLOGIC OPERANDS
AR INCOMPLETE SEQ
AR FORCE 3P TRIP
RESET
FLEXLOGIC OPERANDS
AR ZONE 1 EXTENT
PROTECTION & CB
FLEXLOGIC OPERANDS
AR 3-P/1 RIP
AR 1-P RIP
Mode 1: 1 & 3 Pole
SETTING
Mode 1 Off = 0
AR Mode Activation
Mode 4 Off = 0
.
.
.
.
.
.
Mode
Switching
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