姜建,刘家齐,李燕青,宋乐.基于配电自动化技术的小电流接地故障区段定位方法[J].电测与仪表,2017,54(3):. JIANG Jian,liujiaqi,LI Yanqing,SONG Le.Location Method for Small Current Grounding Fault Section based on Distribution Automation Technology[J].Electrical Measurement & Instrumentation,2017,54(3):.
基于配电自动化技术的小电流接地故障区段定位方法
Location Method for Small Current Grounding Fault Section based on Distribution Automation Technology
A method of steady state of a small current grounding line selection is proposed in this paper, which take full advantage of distribution network single-phase grounding fault of fault line and non fault line"s zero sequence current and zero sequence voltage phase relationship, with the existing distribution automation technology, novel in meter and the influence of distribution line resistance, consider the line under a load line fault and non fault line zero sequence current and voltage phase relationship, and through in the feeder automation terminal unit (FTU) embedding phase DFT detection algorithm to detect zero sequence current and voltage phase difference. The simulation proves the effectiveness of fault line selection method..