摘要
针对我国煤矿矿山配电系统中性点大都采取小电流接地方式的特殊现状,为解决单相接地故障的快速选线定位问题,研究了矿山电网供电系统的电气结构和小波分析的基本理论,提出了基于小波分析的双端电流行波测距的选线定位方案,借助故障线路产生的零序电流完成接地定位,并通过MATLAB进行建模仿真,结果表明:该方案选线定位准确、动作可靠,可以有效提升煤矿供电的安全性。
Neutral indirectly grounded way, is widely used in distribution power system of mine in our country. For this special status, in order to solve the problem of fast fault location of single phase to ground fault, the electrical structure of mine power supply system and the basic theory of wavelet analysis is studied.Based on wavelet analysis, a scheme of fault line selection for double terminal traveling wave fault location is proposed, the zero sequence current generated by the fault line is located to the ground, with the aid of MATLAB, the results show that the method is accurate and reliable, and can effectively improve the safety of coal mine power supply.
出处
《煤矿机械》
2016年第12期23-26,共4页
Coal Mine Machinery
基金
煤矿电气设备与智能控制山西省重点实验室开放基金(MEI201502)
关键词
矿山配电网
小波变换
双端电流行波
故障测距
MATLAB
coalmine power network
wavelet transform
double terminal current traveling wave
fault location
MATLAB
