程志友,汤明金,李小静,夏霜.基于双端电气量的配电线路故障定位方法[J].电测与仪表,2018,55(8):46-50. Cheng Zhiyou,Tang Mingjin,Li Xiaojing,Xia Shuang.Fault location of distribution line method based on two-terminal electrical power quantities[J].Electrical Measurement & Instrumentation,2018,55(8):46-50.
基于双端电气量的配电线路故障定位方法
Fault location of distribution line method based on two-terminal electrical power quantities
Fault location technology of distribution lines plays an important role in maintaining the stable operation of power system. In this paper, based on the R-L circuit model, a fault location method based on voltage and current positive sequence components is proposed .Firstly, the voltage and current phasors of the measurement points at both ends of the distribution line are detected, and the positive sequence voltage and current phasors matrix are obtained, and then combined with the line fault coefficient matrix and line impedance parameters to establish the positioning function to achieve fault location. The simulation results show that the proposed method has the advantages of small computation, little influence by fault resistance and fault location, good robustness, high accuracy for fault location of distribution network and it has a good application prospect in fault location of distribution network.
