In order to ensure the safe operation of EMUs in high-altitude environments,this paper explores the application of solid insulation technology in high-voltage equipment of EMUs.Through electric field simulation analysis of a solid-in-sulated disconnector with a rated voltage of 31.5 kV and a power frequency withstand voltage of 100 kV,it was found that the maximum electric field in each insulation medium was 22.37 kV/mm and 7.65 kV/mm,respectively,exceeding the optimal electric field specified for each insulation medium.By changing the structure of the shielding mesh,increasing the thickness of the insulation layer,and adding a metal shielding mesh,the maximum electric field was reduced to 14.93 kV/mm and 2.61 kV/mm,respectively,to meet the specified electric field standards.The optimized design of solid-insulated disconnector has been verified standard-qualified through power frequency withstand voltage tests.
关键词
隔离开关/绝缘击穿/电场计算/结构优化/动车组
Key words
disconnector/insulation breakdown/electric field calculation/structural optimization/EMUs
维普
万方数据