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发明授权
CN105158646B 定位阀侧单相接地故障点的方法及系统 有权 转让

定位阀侧单相接地故障点的方法及系统
摘要：
本发明涉及种定位阀侧单相接地故障点的方法和系统。所述定位整流侧换流变阀侧单相接地故障点的方法包括:检测整流侧换流阀侧的Y桥短路保护、D桥短路保护是否发生保护动作;若所述Y桥短路保护、D桥短路保护均发生保护动作,确定当前整流侧单相接地故障点位于换流变阀侧Y桥阀组。通过本发明,能够实现整流侧和逆变侧换流变阀侧单相接地故障点的定位。
摘要（英）：

The invention relates to a method and system for localizing a single-phase earth fault point of a valve side. The method for localizing a single-phase earth fault point of a converter valve side of a rectification side comprises: whether a Y-bridge short-circuit protection unit and a D-bridge short-circuit protection unit at a converter valve side of a rectification side take protection action is detected; if so, the current single-phase earth fault point of the rectification side is determined to be located at a Y bridge valve group of the converter valve side. With the method and system, localization of a single-phase earth fault point of a converter valve side of a rectification side and an inversion side can be realized.

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