基于行波法的轨地绝缘分析与定位方法研究  

Analysis and Positioning of Rail Insulation by Using Traveling Wave Method

作　　者：钱辉 张栋梁[2] 

机构地区：[1]昆明轨道交通有限公司,昆明工程师650011 [2]中国矿业大学信息与电气工程学院,徐州221116

出　　处：《城市轨道交通研究》2013年第7期88-91,共4页Urban Mass Transit

基　　金：江苏省普通高校研究生科研创新计划项目(CX10B_137Z)

摘　　要：在传统直流牵引回流系统分布模型的基础上加入电感和对地电容,重新建立了分布模型。在新模型下,分析行波在钢轨中的传播特性,根据行波定位原理,提出利用C型行波法对轨地绝缘局部损坏进行定位的方法。运用对比法确定故障特征波,消除了均流电缆和回流电缆反射波的影响。最后通过ATP仿真及MATLAB数据处理,证明了C型行波法定位的可行性。On the basis of distribution model of traditional DC traction return system, the inductance and capacitance to ground are added to re-establish a new distribution mod- el. According to this model, the traveling wave propagation characteristics of the rail are analyzed, then based on the principle of traveling wave positioning, a method of taking C-type traveling wave is proposed, which will position the partial damage to the insulation of rail. A comparative method to determine the failure characteristics of the wave is adopted, in order to eliminate the current impact of the reflected wave in equilibrium cable and return cable. Final- ly, through ATP simulation and MATLAB data processing, the feasibility of C-type traveling wave positioning method is verified.

关 键 词：城市轨道交通 轨道绝缘 C型行波法 故障定位 

分 类 号：U284.25[交通运输工程—交通信息工程及控制]