动车组弓网离线过电压特性研究

Pantograph Catenary Off-Line Overvoltage Characteristics of EMU

动车组运行中的弓网离线放电行为会引起车载电路电磁暂态响应,对列车电气和通信系统产生传导和辐射干扰,危害列车运行安全。笔者基于暂态过电压理论,对弓网离线放电问题进行研究,建立离线工况下的动车组仿真模型,研究分析了弓网离线放电的3种典型情况,首次建立了通过临界条件判定控制电弧状态切换的弓网离线过电压仿真模型,并在京雄线复兴号动车组上进行了跟车监测,对仿真结果进行了验证,并分析了弓网离线持续时长的分布规律。

The pantograph-catenary off-line discharge behavior in EMU operation will cause electro-magnetic transient response of on-board circuit,which will generate conduction and radiation interfe-rence to train electrical and communication system and endanger train operation safety.Based on the the-ory of transient overvoltage,the author studies the problem of pantograph catenary off-line discharge,establishes the EMU simulation model under off-line condition,simulates and analyzes three typical ca-ses of pantograph catenary off-line discharge,and carries out vehicle following monitoring on Fuxing EMU of Beijing-Xiongxian line.The monitoring results are processed by the inversion technology based on vector matching,and the simulation results are analyzed and verified.