基于WVD分布的矿井供电线路故障定位方法研究  

Fault location method of mine power supply line based on WVD distribution

作　　者：闫维忠 胡开庚 王宝来[1] 王春青 龙大鹏[1] YAN Wei-zhong;HU Kai-geng;WANG Bao-lai;WANG Chun-qing;LONG Da-peng(Kailuan(Group)Limited Liability Corporation,Tangshan 063018,China)

机构地区：[1]开滦(集团)有限责任公司,河北唐山063018

出　　处：《煤炭工程》2021年第5期98-101,共4页Coal Engineering

摘　　要：矿井供电线路容易发生线路短路、过载、过流等故障,严重影响矿井用电安全。文章提出了一种基于WVD分布的矿井供电线路故障定位方法。利用窗函数抑制WVD分布交叉项;当矿井内供电线路发生故障时,通过采集装置获取线路初始故障信号;利用WVD分布处理线路故障信号,得到故障信号的能量分布;利用信号能量最大值确定线路初始故障信号的到达时间;依据双端定位方法计算线路故障发生位置。仿真结果表明,文章所提方法能够精确计算矿井供电线路故障位置,不受噪声因素影响,有效提高了矿井供电的安全性。Mine power supply lines are prone to line short circuit,overload,overcurrent and other faults,which seriously affect the safety of mine electricity.So,a fault location method of mine power supply line is proposed based on WVD distribution.The window function is used to suppress the WVD distribution cross term.When the power supply line in the mine fails,the initial fault signal of the line is obtained through the acquisition device.The line fault signal is processed using WVD distribution to obtain the energy distribution of the fault signal.Then the arrival time of the initial fault signal is determined according to the maximum signal energy.And location of the line fault is calculated based on the double-ended positioning method.The simulation results show that the method can accurately calculate the fault location of the mine power supply line without being affected by noise,and significantly improve the power supply safety.

关 键 词：矿井 供电线路 WVD分布 故障定位 

分 类 号：TD607[矿业工程—矿山机电]