基于行波法的牵引网系统故障测距应用研究

Application Research of Traction Network System Fault Location Based on Traveling Wave Method

针对牵引网受到机车运行工况变化影响,以及一些不确定性因素导致出现接地故障的缺陷,提出了一种行波法进行对牵引网故障测距应用方案。依据AT牵引网实际电路在ATP中建立投切并联电容补偿器的模型,对机车在牵引网运行时的电流进行仿真分析,得到发生短路时的故障数据,再利用MATLAB对故障数据进行行波法测距,并通过搭建硬件电路实验平台进行验证,通过仿真分析和实验验证,得出了行波牵引网故障测距是行之有效的。

For traction network affected by the locomotive operation condition changes, as well as some uncertainty factors result in the defects of ground fault, this paper proposes a method of traveling wave for accurate fault location of traction network application solutions. Ats based on actual circuit of traction network in ATP shunt capacitance compensator model, set up in locomotive traction current net run time simulation analysis, get short- circuit fault data, using MATLAB to the traveling wave method of fault data, and is verified by hardware circuit experiment platform, through the simulation analysis and experimental verification, it is concluded that the traveling wave traction network fault location is effective.