8-8
D60 Line Distance Protection System
GE Multilin
8.1 DISTANCE ELEMENTS
8 THEORY OF OPERATION
8
Left Blinder RCA: 88°
Polarizing Current: Zero-sequence
Non-Homogeneity Correction Angle: 3°
Directional RCA: 88°
Z0/Z1 Magnitude: 4.55
Overcurrent supervision: 3 A
Z0/Z1 Angle: –12°
Distance Comparator limit angle: 75°
Z0M/Z1 Magnitude: 0
Directional Comparator limit angle: 75°
Assume the following signals are injected to the relay:
V
A
= 64.71 V
0.0° (pre-fault)
V
A
= 25.43 V
–19.9°
V
B
= 80.22 V
–133.5°
V
C
= 77.33 V
135.7°
I
A
= 4.47 A
–107.8°
I
B
= 2.92 A
68.9°
I
C
= 2.93 A
–51.1°
Based on the entered setting the relay calculates:
K0 = 3.58
–15.2°
K0M= 0
Z
= 14.00
88°
Z
D
= 1
88°
Z
R
= 9.99
2°
Z
L
= 4.99
178°
For the assumed steady-state injection the relay calculates:
V
A
_1
= 58.83 V
–2.1°
V
A
_1M
= 64.71 V
0.0°
I_0
= 1.37 A
–68.2°
I
A
_2
= 1.37 A
–68.1°
–V_0
= 29.18 V
8.4°
(V
A
–V
B
)_1
= 93.35 V
32.0°
(V
A
–V
B
)_1M
= 112.08 V
30.0°
I
A
–I
B
= 7.39 A
–109.1°
b) MHO PHASE A TO GROUND ELEMENT (BEFORE MEMORY EXPIRES)
I
A
Z + I_0
K0
Z + I
A
K0M
Z – V
A
= 103.33 V
–3.9°
V
A
_1M =
64.71
V
0.0°
I
A
_2
Z
D
=
1.37
V
19.8°
I_0
Z =
19.11
V
19.8°
I_0
Z
D
= 1.37 V
19.8°
•
Overcurrent supervision: | 3
I_0 | = 4.09 A
3 A
•
Mho difference angle = | –3.9° – 0° | = 3.9°
75°
•
Reactance difference angle = | –3.9° – 19.8° | = 23.7°
75°
•
Zero-sequence directional difference angle = | 19.8° – 0.0° | = 19.8°
75°
•
Negative-sequence directional difference angle = | 19.8° – 0.0° | = 19.8°
75°
•
Fault-type comparator difference angle = | 19.8° – 19.8° | = 0.0°
50°
Содержание D60
Страница 61: ...GE Multilin D60 Line Distance Protection System 2 31 2 PRODUCT DESCRIPTION 2 3 SPECIFICATIONS 2 ...
Страница 62: ...2 32 D60 Line Distance Protection System GE Multilin 2 3 SPECIFICATIONS 2 PRODUCT DESCRIPTION 2 ...
Страница 102: ...3 40 D60 Line Distance Protection System GE Multilin 3 3 DIRECT INPUT AND OUTPUT COMMUNICATIONS 3 HARDWARE 3 ...
Страница 134: ...4 32 D60 Line Distance Protection System GE Multilin 4 3 FACEPLATE INTERFACE 4 HUMAN INTERFACES 4 ...
Страница 508: ...5 374 D60 Line Distance Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Страница 538: ...6 30 D60 Line Distance Protection System GE Multilin 6 5 PRODUCT INFORMATION 6 ACTUAL VALUES 6 ...
Страница 610: ...10 8 D60 Line Distance Protection System GE Multilin 10 2 BATTERIES 10 MAINTENANCE 10 ...
Страница 622: ...A 12 D60 Line Distance Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Страница 745: ...GE Multilin D60 Line Distance Protection System B 123 APPENDIX B B 4 MEMORY MAPPING B ...
Страница 746: ...B 124 D60 Line Distance Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Страница 776: ...C 30 D60 Line Distance Protection System GE Multilin C 7 LOGICAL NODES APPENDIX C C ...
Страница 792: ...E 10 D60 Line Distance Protection System GE Multilin E 1 IEC 60870 5 104 PROTOCOL APPENDIX E E ...
Страница 804: ...F 12 D60 Line Distance Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Страница 826: ...xii D60 Line Distance Protection System GE Multilin INDEX ...