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动车组固体绝缘隔离开关电场仿真优化设计

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为了确保动车组在高海拔环境的安全运行,研究了在动车组高压设备中应用固体绝缘技术.通过对额定电压 31.5 kV、工频耐压 100 kV的固体绝缘隔离开关进行电场仿真分析,发现电场强度在各绝缘介质中的最大值分别为 22.37 kV/mm与 7.65 kV/mm,超过各绝缘介质规定场强最优值.通过改变屏蔽网结构、增大绝缘层厚度、增加金属屏蔽网,将场强最大值分别降低为 14.93 kV/mm与 2.61 kV/mm,达到规定场强标准.通过工频耐压试验验证了固体绝缘隔离开关的优化设计达标.
Electric Field Simulation and Optimization Design for Solid-insulated Disconnectors of EMUs
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.

disconnectorinsulation breakdownelectric field calculationstructural optimizationEMUs

刘郑森、薄文彦、张东远、黄永旺、欧阳可进、王俊勇

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西南交通大学机械工程学院,四川 成都 610031

山西大同大学计算机与网络工程学院,山西 大同 037009

北京中车赛德铁道电气科技有限公司,北京 100176

厦门顾德益电气股份有限公司,福建 厦门 361000

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隔离开关 绝缘击穿 电场计算 结构优化 动车组

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(19)