Lightning stroke fault may cause power interruption and over-voltage due to lightning stroke may do harm to electronic apparatus.

雷击故障能够造成电力中断，雷击产生的过电压，会对用户微电子设备造成损害。

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This paper describes . and compares three popularly used trouble locating methods of power lines, i. e. , protection action analysis, fault recorder analysis and lightning location system.

介绍了电力系统线路故障点判断常用的保护动作分析、故障录波器分析和雷电定位系统三种方法。

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It is pointed out that this system has the function of self diagnosis, the system fault automatic isolation function, the anti lightning and overvoltage protection function.

指出该系统具有自诊断功能、系统故障自动隔离功能、抗雷击和过电压保护功能。

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