动车组干式电压互感器的故障研究

Fault Study of Dry Voltage Transformer of EMU

近年来,铁路交通的发展给人们出行带来了很大的方便,快速,尤其是动车组的发展越来越得到关注。据相关数据统计,铁路应用的电压互感器发生故障大多是由于过电压的冲击,显然搞清高速动车组过电压的问题显得尤为重要。因此,研究动车组过电压对车顶电压互感器故障的影响,对保障铁路运输的安全具有重大意义。本文主要采用MATLAB/Simulink仿真软件对分相过电压、弓网离线过电压和升降弓过电压的产生过程进行仿真,理论分析和仿真结果分析结合说明电压互感器发生炸裂的原因。

In recent years, the development of railway transportation has brought great convenience and speed to people’s travel. According to the statistics of relevant data, the fault of voltage transformer used in railway is mostly caused by the impact of overvoltage, so it is particularly important to find out the problem of overvoltage of high-speed emu. Therefore, it is of great significance to study the influence of the over voltage of the emu on the fault of the roof voltage transformer to ensure the safety of railway transportation. In this paper, MATLAB/Simulink simulation software is mainly used to simulate the generation process of phased over-voltage, off-line over-voltage of the bow network and over-voltage of the lifting bow. The combination of theoretical analysis and simulation result analysis shows the cause of the explosion of the voltage transformer.