AT供电系统钢轨电位的灵敏度分析

Sensitivity Analysis of Rail Potential for AT-fed Traction Power System

本文介绍了基于多导体传输线的链式网络模型,利用Matlab/Simulink建立了AT供电系统仿真模型,对钢轨电位进行了仿真计算,研究了牵引网结构及参数对钢轨电位的影响,包括上下行横连、钢轨对地泄露电导率、AT漏抗以及贯通地线接地电导率。仿真结果表明,上下行横连对钢轨电位降低效果明显,其他措施的效果不明显。

In this paper,a chain network model based on multi-conductor transmission lines was briefly described,models of AT-fed traction power system are built by Matlab/Simulink,the simulation results of rail potential are given out,the impact of changing the traction network structures and parameters to rail potential such as transversal connection,rail-earth leakage conductance,AT leakage reactance and electric conductivity of integrated earthing has been studied,the results show that the effect of transversal connection to decrease rail potential is obvious,the effect of other measures is not obvious.