GE ALPS - Page 36

1-24 ALPS Advanced Line Protection System
GE Power Management
1.8 PROTECTION SCHEMES 1 PRODUCT DESCRIPTION
1
Figure 1–10: STEP DISTANCE LOGIC DIAGRAM
FAULT
DETECTOR
LINE PICKUP
(CANCL)
(RI)
B
0
8
10
(ZONE 2)
TL2G
B
0
B = 0.2 to 3.0 sec.
TL2P
PHASE
DISTANCE
GROUND
DISTANCE
REMOTE
OPEN
PHASE
DISTANCE
GROUND
DISTANCE
GROUND
BACKUP
50G
51G
OVER-
CURRENT
SUPERVISION
IT
IB
PHASE
DISTANCE
GROUND
DISTANCE
PHASE
DISTANCE
GROUND
DISTANCE
PHASE
BACKUP
50P
OSBALL
C
0
C
0
D
0
D
0
TL4G
TL4P
TL3G
TL3P
13
28
12
11
OSB
1
4
11
11
C = 0.4 to 6 sec.
D = 0.4 to 6 sec.
(ZONE 4)
OSB
OSB
(ZONE 3)
REVERSIBLE
ZONE 4
ZONE 3
ZONE 1
OVERREACHING ZONE /
ZONE 2
13
OSB
STP_DST3.VSD
OUT OF STEP
BLOCKING
LOGIC
OSB
Settings 1601 to 1607
(CNFTRP)
CONFIGURABLE
TRIP BUS
8
RECLOSE CANCEL
RECLOSE INITIATE
BLOCK
RECLOSING
Settings 801-810
9
(TRIP)
TRIP
BUS
44
7
7
6
SUPERVISE
ZONE 4
FFB
Setting 714
9