9-8
G30 Generator Protection System
GE Multilin
9.1 SETTING EXAMPLE
9 APPLICATION OF SETTINGS
9
The source used for loss of excitation should produce positive power when the machine is generating. Make the following
changes in EnerVista UR Setup or through the
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1
LOSS OF EXCI-
TATION
menu:
9.1.7 REVERSE POWER
The reverse power element should be set at ½ the rated motoring power. The pickup is calculated as follows:
(EQ 9.15)
For the example system:
(EQ 9.16)
To prevent maloperation for power swings the element is typically time delayed by 20 to 30 seconds. For sequential tripping
applications the time delay will be 2 to 3 seconds. The element may be blocked when the generator is offline. The line
source will be used for this application. Make the following changes in EnerVista UR Setup or through the
SETTINGS
GROUPED ELEMENTS
SETTING GROUP 1
SENSITIVE DIRECTIONAL POWER
DIRECTIONAL POWER 1
menu:
S
min
1
2
---
Rated Motoring Power (primary watts)
3 Phase CT Primary Phase VT Ratio Phase VT Secondary
×
×
×
--------------------------------------------------------------------------------------------------------------------------------------------------------------------------
×
=
S
min
1
2
---
22 10
6
×
W
3 8000 A 115
×
69 V
×
×
----------------------------------------------------------------
×
0.033 pu
=
=
Содержание G30
Страница 10: ...x G30 Generator Protection System GE Multilin TABLE OF CONTENTS ...
Страница 30: ...1 20 G30 Generator Protection System GE Multilin 1 5 USING THE RELAY 1 GETTING STARTED 1 ...
Страница 414: ...5 274 G30 Generator Protection System GE Multilin 5 10 TESTING 5 SETTINGS 5 ...
Страница 456: ...8 2 G30 Generator Protection System GE Multilin 8 1 DIRECTIONAL PRINCIPLE 8 THEORY OF OPERATION 8 ...
Страница 470: ...9 14 G30 Generator Protection System GE Multilin 9 1 SETTING EXAMPLE 9 APPLICATION OF SETTINGS 9 ...
Страница 484: ...11 12 G30 Generator Protection System GE Multilin 11 6 DISPOSAL 11 MAINTENANCE 11 ...
Страница 512: ...A 28 G30 Generator Protection System GE Multilin A 1 PARAMETER LISTS APPENDIX A A ...
Страница 620: ...B 108 G30 Generator Protection System GE Multilin B 4 MEMORY MAPPING APPENDIX B B ...
Страница 666: ...E 10 G30 Generator Protection System GE Multilin E 1 IEC 60870 5 104 APPENDIX E E ...
Страница 678: ...F 12 G30 Generator Protection System GE Multilin F 2 DNP POINT LISTS APPENDIX F F ...
Страница 687: ...GE Multilin G30 Generator Protection System H 7 APPENDIX H H 2 ABBREVIATIONS H Z Impedance Zone ...