发明名称 |
DETECTION OF HIGH IMPEDANCE FAULTS |
摘要 |
A method detects a high-impedance fault occurring in an electric distribution circuit that distributes a three-phase alternating current. The method includes the steps of applying a plurality of electrical signal analysis techniques that provide a plurality of fault detection indicators, and generating a signal that indicates a high-impedance fault depending on the outcome of the fault detection indicators. The method is characterized by determining a randomness of the residual current of the three-phase alternating current prior to determining the plurality of fault detection indicators, and generating a trigger signal depending on the randomness of the residual current. The step of determining the plurality of fault detection indicators requires that the trigger signal has been generated. |
申请公布号 |
EP2880729(A1) |
申请公布日期 |
2015.06.10 |
申请号 |
EP20120769347 |
申请日期 |
2012.09.12 |
申请人 |
SIEMENS AKTIENGESELLSCHAFT |
发明人 |
MAUN, JEAN-CLAUDE;VALERO MASA, ALICIA |
分类号 |
H02H1/00;G01R31/02 |
主分类号 |
H02H1/00 |
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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