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-  2018 

接触网单端故障行波定位方法研究 Study of one end traveling wave fault location on catenary system

Keywords: 行波,接触网,相模变换,单端法,小波变换

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Abstract:

接触网故障时接触线、回流线以及铁轨之间存在电磁耦合,考虑接触网线路的不对称结构,对故障时刻线路中的行波进行非均匀换位线路情况下的相模变换,得到行波地模、线模分量以及相应模量的传播速度.运用3次B样条小波对单端行波的地模量和线模量进行小波变换,从行波波头的模极大值点位置可以定位出接地故障点.最后综合考虑机车负荷的不同运行情况以及过渡电阻对单端行波定位结果的影响,在EMTP中建立T_R+NF供电接触网的电路模型进行仿真验证,结果表明该故障定位方法准确有效

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