发明名称 |
PHASE SELECTION FOR GROUND FAULT |
摘要 |
A method and a device for phase selection for single-pole tripping of high-impedance ground faults in direct grounded power networks. Starting from the ratio of the: negative-sequence voltage to the zero-sequence current (U2/I0) and the ratio of the negative-sequence voltage to the positive-sequence voltage (U2/U1), two criteria with different conditions are formed, each of which indicating a faulted phase, and if both criteria indicate the same phase as faulted, single-pole: tripping can take place.
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申请公布号 |
CA2132203(C) |
申请公布日期 |
1999.01.12 |
申请号 |
CA19932132203 |
申请日期 |
1993.02.18 |
申请人 |
ASEA BROWN BOVERI AB |
发明人 |
ERIKSSON, LEIF;SAHA, MURARI MOHAN;SVENSSON, KJELL |
分类号 |
H02H3/38;(IPC1-7):H02H3/16 |
主分类号 |
H02H3/38 |
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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