严学文,高伟,张稳稳,董军.基于相电流特征的配电网单相断线区段定位新方法[J].电测与仪表,2019,56(3):76-81. YAN XUEWEN,GAO WEI,ZHANG WENWEN,DONG JUN.A novel fault segment location method of single-phase disconnection fault in distribution network based on phase current characteristics[J].Electrical Measurement & Instrumentation,2019,56(3):76-81.
基于相电流特征的配电网单相断线区段定位新方法
A novel fault segment location method of single-phase disconnection fault in distribution network based on phase current characteristics
As a result of lightning and other reasons, distribution network single-phase disconnection fault always occurs. In order to avoid rotor broken and other accidents which is caused by single-phase disconnection fault, this paper presents a new method of fault location based on phase current characteristics. Firstly, the phase voltage and current characteristics of the distribution network are analyzed by using the sequence network. Then, the initiation criterion and the fault phase selection criterion are proposed according to the phase voltage characteristics. Finally, fault segment location criterion is put forward based on phase current correlation coefficient. The proposed method is high sensitive and need low communication. Simulations on PSCAD prove the effectiveness of the method.
