发明名称 |
Method for the selective detection of resistive defects in power-distribution networks and device for carrying out this method. |
摘要 |
<p>Method for the selective detection of a resistive defect on a departure line of an electrical power-distribution network comprising an arrival line (12) powered by a transformer (11) and several departure lines (1-8) each departure line being fitted with a homopolar current detector (9), characterised in that the homopolar current (i1-i8; 1'1-i'8) of each departure (1-8) is continuously measured in amplitude and in phase shift with respect to a reference magnitude, in that the vector sum of the set of homopolar currents of the departure lines is calculated, and the phase-shift of each homopolar current with respect to the phase-shift of the said vector sum is monitored, the presence of a defect being detected when the said phase-shift of a homopolar current exceeds a predetermined negative threshold. <IMAGE></p> |
申请公布号 |
EP0537066(A1) |
申请公布日期 |
1993.04.14 |
申请号 |
EP19920402734 |
申请日期 |
1992.10.07 |
申请人 |
ELECTRICITE DE FRANCE SERVICE NATIONAL |
发明人 |
GRIFFEL, DANIEL;BERGEAL, JEAN |
分类号 |
G01R31/02;H02H1/00;H02H3/28 |
主分类号 |
G01R31/02 |
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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