1-28
ALPS Advanced Line Protection System
GE Power Management
1.8 PROTECTION SCHEMES
1 PRODUCT DESCRIPTION
1
Figure 1–13: PERMISSIVE OVERREACH TRANSFER TRIP (POTT1)
F A U L T
D E T E C T O R
L I N E P I C K U P
( C A N C L )
(RI)
3
4
F = 1 - 5 0
T L 1
F
5 0
B
0
3
4 0 7
8
1 0
K E Y
P E R M I S S I V E
C H A N N E L
(Zone 2)
2
[ 2 R C V R S ]
[ 1 R C V R ]
2 1
C C
( R C V R 1 )
C C
( R C V R 2 )
T L 2 G
B
0
R E F
R E F
B = 0 . 2 - 3 . 0 S E C
T L 2 P
P H A S E
D I S T A N C E
G R O U N D
D I S T A N C E
G R O U N D
D I R E C T I O N A L
O V E R -
C U R R E N T
TRIP
B L O C K
R E M O T E
O P E N
P H A S E
D I S T A N C E
G R O U N D
D I S T A N C E
G R O U N D
B A C K U P
5 0 G
5 1 G
O V E R -
C U R R E N T
S U P E R V I S I O N
P H A S E
D I S T A N C E
G R O U N D
D I S T A N C E
P H A S E
D I S T A N C E
G R O U N D
D I S T A N C E
P H A S E
B A C K U P
5 0 P
O S B A L L
F F B
Setting 714
C
0
C
0
D
0
D
0
T L 4 G
T L 4 P
T L 3 G
T L 3 P
1 3
2 8
1 2
1 1
O S B
1
4
2 5
1 1
1 1
C = 0.4 - 6 sec
D = 0.4 - 6 sec
(Zone 4)
O S B
O S B
(Zone 3)
REVERSIBLE
ZONE 4
ZONE 3
ZONE 1
OVERREACHING ZONE /
ZONE 2
1 3
O S B
O S B
Setting 1202
( K E Y 1 )
( K E Y 2 )
Setting
2 0 5
P O T T 1 . V S D
O U T O F S T E P
B L O C K I N G
L O G I C
OSB – Settings 1601 to 1607
( C N F T R P )
C O N F I G U R A B L E
T R I P B U S
8
R E C L O S E C A N C E L
R E C L O S E I N I T I A T E
B L O C K R E C L O S I N G
Settings 801 to 810
9
( T R I
T R I
B U S
4 4
7
7
6
S u p e r v i s e Z o n e 4
E
E
T L 5
T L 6
E = 0 to 200
52-1
b
52-2
b
[ 2 B R E A K E R S ]
[ 1 B R E A K E R ]
G e n e r a l
Setting
1 0 5
C C
C C
5
A
A
T L 4
A = 0 - 50
5
E
E
9