现代应用物理2025，Vol.16Issue(2)：101-107,7.DOI:10.12061/j.issn.2095-6223.202409013
HEMP模拟注入10 kV配电线路典型绝缘子闪络特性分析
Flashover Characteristics of Typical Insulators Under HEMP Simulated Injection Into 10 kV Distribution Lines
摘要
Abstract
The conducted environment formed by high-altitude electromagnetic pulse(HEMP)through field-line coupling can seriously affect the power system.To evaluate the electromagnetic vulnerability of power system,it is necessary to study the flashover characteristics of insulators under HEMP environment.In this paper,by using the pulsed current injection device simulating the HEMP conducted environment,the flashover characteristics of three typical insulators under different operating conditions and contamination levels are carried out on a 10 kV transmission line experimental platform.The test results show that neither the pin type porcelain insulator(PQ1-10T)nor the composite insulator(FPQ2-10/3T)experience flashover.The flashover voltage of glass insulator(LXY-100)is relatively low,and the statistical probability distribution curve of its flashover voltage is summarized.Its 50％critical flashover voltage is 261 kV(insulators are clean and the power grid is not live)and 247 kV(insulators are clean and the power grid is live),respectively.The increase in pollution level of glass insulators will lead to a decrease of the critical flashover voltage,but this value shows a saturation trend.Under the operating conditions and pollution levels tested in this paper,the saturation voltage(about 230 kV)shows a 12％reduction compared to the non-pollution condition(261 kV).关键词
高空电磁脉冲/脉冲电流注入/绝缘子/闪络电压Key words
high-altitude electromagnetic pulse/pulse current injection/insulator/flashover voltage分类
信息技术与安全科学引用本文复制引用
黄刘宏,梁涛,李跃波,席志豪,谢彦召,邓双..HEMP模拟注入10 kV配电线路典型绝缘子闪络特性分析[J].现代应用物理,2025,16(2):101-107,7.基金项目
国家重点研发计划资助项目(2023YFE0115700) （2023YFE0115700）
