中性点不接地系统间歇性单相接地故障分析
高增伟
（山西晋煤沁秀龙湾能源有限公司，山西晋城048007）
摘要： 介绍了利用MATLAB对中性点不接地系统发生间歇性单相接地故障进行仿真，详细阐述了仿真模型的建模过
程，同时将计算的故障线路的零序电流理论值与仿真值进行比较来验证仿真效果，归纳出中性点不接地系统间歇性单相
接地故障时零序电压与零序电流的零序分量参数及特征。
关键词： 中性点不接地系统；间歇性单相接地；MATLAB；Simulink
中图分类号： TM862 文献标识码： A 文章编号： 2095-0802-(2016)05-0032-02
Analysis of Intermittent Single-phase Earth Fault for Isolated Neutral System
GAO Zengwei
(Qinxiu Longwan Energy Co., Ltd., Jincheng Anthracite Mining Group of Shanxi, Jincheng 048007, Shanxi, China)
Abstract: This paper introduced the simulation of intermittent single-phase earth fault for isolated neutral system performed by
MATLAB, expounded the simulation modeling process of the model in detail, verified the simulation results by comparing theoretical
value and simulation value of zero sequence current for calculated faulty line, and summarized zero sequence component
parameters and characteristics of zero sequence voltage and zero sequence current for intermittent single-phase earth fault for isolated
neutral system.

Key words: neutral point grounding system; intermittent single-phase grounding; MATLAB; Simulink