发明申请
- 专利标题： METHOD AND SYSTEM FOR TRANSIENT AND INTERMITTENT EARTH FAULT DETECTION AND DIRECTION DETERMINATION IN A THREE-PHASE MEDIAN VOLTAGE ELECTRIC POWER DISTRIBUTION SYSTEM
- 专利标题（中）： 三相电力电力分配系统中的瞬态和间断接地故障检测方法及方法确定方法
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申请号： US13263310申请日： 2009-05-15
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公开(公告)号： US20120123708A1公开(公告)日： 2012-05-17
- 发明人: Xinzhou Dong , Tao Cui , Zhiqian Bo , Andrzej Klimek , Andrzej Juszczyk
- 申请人： Xinzhou Dong , Tao Cui , Zhiqian Bo , Andrzej Klimek , Andrzej Juszczyk
- 优先权： CN200910131630.1 20090410
- 国际申请： PCT/EP09/55954 WO 20090515
- 主分类号： G06F19/00
- IPC分类号： G06F19/00 ; G01R31/02
摘要：
A method and a system for transient and intermittent earth fault detection and direction determination in a three-phase median voltage electric power distribution system which comprises many lines. The system comprises: sampling means wherein the residual current and residual voltage on said lines are sampled, transient direction detection means based on instantaneous power, random intermittent detection means based on intermittent change of residual current amplitude, means of integrating transient direction and random intermittent detection, and alarm means indicating maintenance personnel to check the status of one line.
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