发明名称 |
Directional fault current indicator |
摘要 |
A method for identifying a fault condition associated with a power line conductor of an electrical power distribution network. The method determines if a load current carried by the conductor is above a minimum load current, determines a learned phase angle relationship between the load current and a source signal, determines a load current magnitude, determines a real-time phase angle relationship between the load current and the source signal and indicates a fault condition when the real-time phase angle relationship is within a predetermined number of angular degrees of the learned phase angle relationship and when the load current magnitude exceeds a fault-indicating current.
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申请公布号 |
US7969155(B2) |
申请公布日期 |
2011.06.28 |
申请号 |
US20080164049 |
申请日期 |
2008.06.28 |
申请人 |
THOMAS & BETTS INTERNATIONAL, INC. |
发明人 |
VARGHAI MEHRI;DOMO JAMES FRANCIS |
分类号 |
G01R31/08;G01R25/00 |
主分类号 |
G01R31/08 |
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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