基于瞬时电流极性法对配电网故障线路的定位  

Location of Distribution Network Faulted Line Based on Instantaneous Current Polarity

作　　者：李慧[1] 王奔[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《通信电源技术》2015年第3期126-128,共3页Telecom Power Technology

摘　　要：利用故障后系统中的负序电流极性对配电网故障线路的定位方法相对于零序电流的定位方法有其优越性。根据故障线路负序电流极性与非故障线路负序电流极性不同的特点,选取一条线路的负序电流作为参考电流,然后根据其它线路的负序电流与参考电流进行内积运算来定位配电网的故障线路。仿真结果表明,该方法在系统中能可靠地定位故障线路。The location method of distribution network faulted line based on polarity of the negative sequence current has its edges over that based on the zero-sequence current.According to polarity difference of negative sequence current in faulted and nor-mal line,a line fault can be located by conducting current inner product operation with negative sequence currents of various lines and negative sequence current of a normal line.The simulation results show the reliability of this method.

关 键 词：负序电流 瞬时对称分量 故障线路 

分 类 号：TM73[电气工程—电力系统及自动化]