Protection and fault positioning method for generator stator winding single-phase earthing |
Title： |
| Protection and fault positioning method for generator stator winding single-phase earthing |
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Application Number： |
200410006176 |
Application Date： |
2004/03/05 |
Announcement Date： |
2005/01/05 |
Pub. Date： |
2007/08/22 |
Publication Number： |
1560976 |
Announcement Number： |
1333503 |
Grant Date： |
2007-8-22 |
Granted Pub. Date： |
2007-8-22 |
ApplicationType： |
Invention |
State/Country： |
11[China|beijing] |
IPC： |
H02H 7/06, G01R 31/06 |
Applicant(s)： |
Tsinghua Univ. |
Inventor(s)： |
Bi Daqiang, Wang Xiangyan, Wang Weijian |
Key Words： |
Protection, fault positioning method, generator stator, winding, single-phase earthing |
Abstract： |
This invention relates to a single-phase earth protection of a generator stator windings and its fault positioning method characterizing in considering the influence of the parameter of a neutral point earth device to the computation of earth resistance value, it also applies trouble locating when each phase earth voltage and zero sequence voltage of the generator end carries out stator winding single phase earth to solve the problem of low accuracy of the earth fault resistance value computation of current added 20Hz power source stator winding single phase earth protection, the error is limited less than 10% so as to relatively solve the problem of fault positioning of a generator stator single phase earth. |
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 Relevancy information |
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| Last Update |
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2008-4-17 |
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Selected patents owned by Tsinghua University filed in 2005 are loaded. |
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2008-3-31 |
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Selected patents owned by Tsinghua University filed in 2006 and 2007 are load. |
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