Research on the Insulation Weak Area of High-Voltage Equipment on High-Speed Train Roof Based on Simulation

High-speed train is one of the most important traffic tools in our life. With the increase of the speed of the train, there are new requirements for the insulation characteristic of the high-voltage equipment. In this paper, the electric field and flow field of the roof insulator are simulated by ANSYS-MAXWELL and FLUENT, and the insulation weak area of a single insulator is analyzed. The influence of intensity and direction of the airflow on the insulation weak area of the insulator is analyzed by flow field simulation. Based on the research above, in the premise that the insulation characteristic is not affected, the layout of the high-voltage equipment on roof is optimized by the electric field simulation in order to make the layout compact, reduce the occupancy space, reduce the effect of the airflow on the insulation characteristic of high-voltage equipment, and reduce the air resistance, which is conducive to increasing the speed of the train.