基于粒子群算法的轨道电路补偿电容故障诊断方法

为了延长轨道电路传输距离，改善传输效果。本文提出一种机车信号感应电压幅值包络仿真模型，它是基于均匀传输线理论，通过补偿电容对机车信号感应电压幅值包络的影响规律，使用改进粒子群算法得到当前状态下补偿电容的最优值，进而对补偿电容的故障进行诊断。仿真结果表明，这种诊断方法是可行和有效的，能快速准确地定位故障补偿电容，替补偿电容的故障诊断提供了新的有效手段。

A Fault Diagnosis Method For the Compensation Capacitor Based on Particle Swarm Optimization on Track Circuit

In order to extend the length of track circuit transmission,and get the best transmission.This paper presents a transmission-line theory based simulation model of the induced voltage envelope of the cab signal.The inlfuence law of the compensation capacitor failure on the induced voltage envelope of the cab signal is analyzed,and the fault diagnosis method for the compesation capacitor based on particle swarm optimization is proposed.Simulation results show that this diagnosis method is feasible and effective,and it could locate the fault compensation capacitor more quickly and accurately.The method makes up the shortage of the current methods,andprovide a new and effective method for the compensation capacitor.