井下高压电网单相接地故障选相的研究  

Nonlinear speed control for a permanent magnet synchronous generator and the boost-chopper converter

作　　者：武彦军 张建权 黄真奇 黄智军 李立晶 温前飞 WU Yanjun;ZHANG Jianquan;HUANG Zhenqi;HUANG Zhijun;LI Lijing;WEN Qianfei(Fenxi Mining(Group)Co.,Ltd.Shuguang Coal Mine,Xiaoyi 032300,China)

机构地区：[1]山西汾西矿业(集团)有限责任公司曙光煤矿,山西孝义032300

出　　处：《电气应用》2022年第8期28-32,共5页Electrotechnical Application

摘　　要：针对曙光煤矿井下高压供电系统单相漏电故障难以正确选相问题展开研究。分析了系统消弧线圈采用过补偿工作方式的原因,同时在现有的选线技术基础上,为了能够快速找到故障线路的故障相,提出了相序法进行故障选相。结合曙光煤矿供电系统的电气参数,通过MATLAB/Simulink搭建了系统仿真的模型,仿真结果表明,此故障选相方法在不同的接地电阻情况下的可行性。The problem that it is difficult to correctly select the phase for the single-phase leakage fault of the underground high-voltage power supply system in Shuguang Coal Mine is studied.The reason why the arc suppression coil of the system adopts the overcompensation working mode is analyzed.At the same time,in order to quickly find the faulty phase,a phase-sequence method is proposed to solve the problem based on the existing line selection technology,.Combining with the parameters of the power supply system of Shuguang Coal Mine,a system simulation model is built through MATLAB/Simulink.The simulation results show that the fault phase selection method is feasible under different grounding resistances.

关 键 词：单相接地故障 故障选相 消弧线圈 过补偿 

分 类 号：TM862[电气工程—高电压与绝缘技术] TD611[矿业工程—矿山机电]