GE Multilin
D30 Line Distance Protection System
9-3
9 THEORY OF OPERATION
9.1 DISTANCE ELEMENTS
9
Figure 9–1: MHO AND LENS CHARACTERISTICS
c) NON-DIRECTIONAL MHO CHARACTERISTIC
The non-directional mho characteristic is achieved by checking the angle between:
•
AB phase element: (I
A
– I
B
)
×
Z – (V
A
– V
B
)
and
(V
A
– V
B
) – (I
A
– I
B
)
×
Z
REV
•
BC phase element: (I
B
– I
C
)
×
Z – (V
B
– V
C
)
and
(V
B
– V
C
) – (I
B
– I
C
)
×
Z
REV
•
CA phase element: (I
C
– I
A
)
×
Z – (V
C
– V
A
)
and
(V
C
– V
A
) – (I
C
– I
A
)
×
Z
REV
•
A ground element:
I
A
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
A
and
V
A
– (I
A
×
Z
REV
+ I_0
×
K0
×
Z
REV
+ I
G
×
K0M
×
Z
REV
)
•
B ground element:
I
B
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
B
and
V
B
– (I
B
×
Z
REV
+ I_0
×
K0
×
Z
REV
+ I
G
×
K0M
×
Z
REV
)
•
C ground element:
I
C
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
C
and
V
C
– (I
C
×
Z
REV
+ I_0
×
K0
×
Z
REV
+ I
G
×
K0M
×
Z
REV
)
d) MHO REACTANCE CHARACTERISTIC FOR DIRECTIONAL APPLICATIONS
The reactance characteristic is achieved by checking the angle between:
•
AB phase element: (I
A
– I
B
)
×
Z – (V
A
– V
B
)
and
(I
A
– I
B
)
×
Z.
•
BC phase element: (I
B
– I
C
)
×
Z – (V
B
– V
C
)
and
(I
B
– I
C
)
×
Z.
•
CA phase element: (I
C
– I
A
)
×
Z – (V
C
– V
A
)
and
(I
C
– I
A
)
×
Z.
•
A ground element: I
A
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
A
and
I_0
×
Z.
•
B ground element: I
B
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
B
and
I_0
×
Z.
•
C ground element: I
C
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
C
and
I_0
×
Z.
If the mho characteristic is selected, the limit angle of the comparator is adjustable concurrently with the limit angle of the
mho characteristic, resulting in a tent shape complementing the lens characteristic being effectively applied.
e) QUADRILATERAL REACTANCE CHARACTERISTIC FOR DIRECTIONAL APPLICATIONS
The quadrilateral reactance characteristic is achieved by checking the angle between:
•
AB phase element: (I
A
– I
B
)
×
Z – (V
A
– V
B
)
and
(I
A
– I
B
)
×
Z.
•
BC phase element: (I
B
– I
C
)
×
Z – (V
B
– V
C
)
and
(I
B
– I
C
)
×
Z.
•
CA phase element: (I
C
– I
A
)
×
Z – (V
C
– V
A
)
and
(I
C
– I
A
)
×
Z.
•
A ground element: I
A
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
A
and
(j
×
I_0 or j
×
I_2A)
×
e
j
Θ
.
•
B ground element: I
B
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
B
and
(j
×
I_0 or j
×
I_2B)
×
e
j
Θ
.
•
C ground element: I
C
×
Z + I_0
×
K0
×
Z + I
G
×
K0M
×
Z – V
C
and
(j
×
I_0 or j
×
I_2C)
×
e
j
Θ
.
MHO CHARACTERISTIC
LENS CHARACTERISTIC
R
Reach setting
X
837715A2.CDR
Comparator angle setting= 90
R
Comparator angle setting < 90
Reach setting
X
837714A2.CDR
Summary of Contents for D30D00HCHF8AH6AM6BP8BX7A
Page 10: ...x D30 Line Distance Protection System GE Multilin TABLE OF CONTENTS...
Page 374: ...5 248 D30 Line Distance Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5...
Page 398: ...6 24 D30 Line Distance Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6...
Page 410: ...7 12 D30 Line Distance Protection System GE Multilin 7 2 TARGETS 7 COMMANDS AND TARGETS 7...
Page 444: ...9 24 D30 Line Distance Protection System GE Multilin 9 5 FAULT LOCATOR 9 THEORY OF OPERATION 9...
Page 576: ...B 102 D30 Line Distance Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B...
Page 616: ...D 10 D30 Line Distance Protection System GE Multilin D 1 IEC 60870 5 104 PROTOCOL APPENDIX D D...
Page 628: ...E 12 D30 Line Distance Protection System GE Multilin E 2 DNP POINT LISTS APPENDIX E E...
Page 636: ...F 8 D30 Line Distance Protection System GE Multilin F 3 WARRANTY APPENDIX F F...
Page 646: ...x D30 Line Distance Protection System GE Multilin INDEX...
