发明名称 |
Method and apparatus detecting shorted turns in an electric generator |
摘要 |
Methods and systems consistent with the present invention provide improved online detection of one or more shorts in rotor turns ( 18 ) of a field winding ( 22 ) of an electric generator. An initial reference inductance L<SUB>REF </SUB>is determined by an impedance-measuring circuit ( 50 ). A subsequent inductance L is determined by the impedance measuring circuit ( 50 ). A data processing system ( 54 ) compares L<SUB>REF </SUB>to L to determine whether they differ by a predetermined amount. If L<SUB>REF </SUB>and L differ by the predetermined amount, an alarm is provided to operators to indicate the presence of one or more shorted rotor turns.
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申请公布号 |
US6882173(B1) |
申请公布日期 |
2005.04.19 |
申请号 |
US20030672770 |
申请日期 |
2003.09.26 |
申请人 |
SIEMENS WESTINGHOUSE POWER CORPORATION |
发明人 |
NELSON ROBERT JOHN;PROLE ALEKSANDAR;CATES STEPHEN W.;NIEVES ABRAHAM |
分类号 |
G01R31/06;(IPC1-7):G01R31/06;G01R31/34 |
主分类号 |
G01R31/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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