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Method and system for transient and intermittent earth fault detection and direction determination in a three-phase medium voltage electric power distribution system
Method and system for transient and intermittent earth fault detection and direction determination in a three-phase medium voltage electric power distribution system
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机译:三相中压配电系统中暂态和间歇性接地故障检测与方向确定的方法和系统
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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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