基于频域分析的配电网分支故障定位  

ANALYSIS IN FREQUENCY DOMAIN FOR LOCATING GROUND FAULT IN THE BRANCHES OF POWER DISTRIBUTION NETWORK

作　　者：吴振升[1] 杨学昌[1] 伊贵业[1] 

机构地区：[1]清华大学电机系,北京100084

出　　处：《电力系统自动化》2001年第23期32-36,48,共6页Automation of Electric Power Systems

基　　金：国家自然科学基金 (5 97770 17)

摘　　要：在已经提出的配电网接地故障定位的加信传递函数法的基础上 ,根据所得传递函数频域波形特性与配电线路结构的关系 ,提出了配电网接地故障定位的分支故障信息法。该方法利用数字信号处理手段提取线路接地故障分支的故障信息来作为进行接地故障定位的判据 ,从而较准确地判定故障位置。以实际线路演化来的线路模型为例进行了仿真计算和测距方法介绍 ,结合实际理论分析证实了本方法的有效性。完善了已经提出的配电网接地故障定位的传递函数法的分支定位问题。There is a relationship between the transfer function's waveform and the construct of power distribution network. Based on the transfer function algorithm for locating ground fault in power distribution network,an algorithm named fault's information about branches for locating ground fault in the branches of power distribution network is raised.By digital signal processing, the criterion is gotten for locating the fault from the information about the fault and the fault is located accurately.Computer simulations referring to practical power distribution lines and theoretical analysis show that the algorithm cal effectively locate faults in the branches of power distribution network.It perfects the theory of the proposed transfer function algorithm for locating ground fault in power distribution network.

关 键 词：配电网 分支故障定位 分支故障信息法 频域分析 传递函数 

分 类 号：TM727[电气工程—电力系统及自动化] TM711