摘要：提出一种利用采集分布电容充放电暂态电流信号产生的电磁信号，来实现线路小电流接地故障的选线和定位的方法。分析了线路下方水平电磁场与小电流接地时分布电容充放电暂态信号的相关性能特征。根据故障点前后分布电容充放电的暂态信号不同，通过波形比较来选定故障线路和判断故障区段。阐述了所述方法的若干性能与措施。
关键词：线路分布电容；小电流接地故障；故障选线；故障定位；波形比较
Abstract: this paper presents a method to select and locate the fault of small current in the circuit by using electromagnetic signal generated by the transient current signal of collecting distributed capacitance. The characteristics of the transient signal of the distributed capacitance in the lower level of the circuit and the small current are analyzed. The fault lines and fault segments are selected by waveform according to the difference of transient signals in the distribution of capacitance discharge at the point of failure. Several properties and measures of the method are described.
Keywords: line distribution capacitance; small current ground fault; fault selection line; Fault location; Waveform comparison;
论文作者:郑琰,张延辉,朱莉,金博
论文发表刊物:《电力设备》2017年第30期
论文发表时间:2018/3/8
标签：故障论文; 电流论文; 电容论文; 信号论文; 线路论文; 波形论文; 充放电论文; 《电力设备》2017年第30期论文;