航空学报 > 2022, Vol. 43 Issue (3): 425124-425124   doi: 10.7527/S1000-6893.2021.25124

静电电磁脉冲场诱发聚四氟乙烯材料表面闪络实验

张岩1,2, 张路2, 刘尚合1, 胡小锋1, 钱禹行2, 张建平1   

  1. 1. 陆军工程大学石家庄校区 电磁环境效应国家级重点实验室, 石家庄 050003;
    2. 河北科技大学 电气工程学院, 石家庄 050018
  • 收稿日期:2020-12-18 修回日期:2021-01-11 出版日期:2022-03-15 发布日期:2021-10-21
  • 通讯作者: 刘尚合 E-mail:yanyanfly163@163.com
  • 基金资助:
    国家自然科学基金(51777213);装备预研究重点基金(61402090201);河北省自然科学基金(E2019208443);河北省高等学校科学技术研究项目(ZD2021202)

Experiment on electrostatic electromagnetic pulse field induced surface flashover of PTFE material

ZHANG Yan1,2, ZHANG Lu2, LIU Shanghe1, HU Xiaofeng1, QIAN Yuxing2, ZHANG Jianping1   

  1. 1. National Key Laboratory of Strong Electromagnetic Environmental Effects, Army University of Engineering (Shijiazhuang Campus), Shijiazhuang 050003, China;
    2. School of Electrical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China
  • Received:2020-12-18 Revised:2021-01-11 Online:2022-03-15 Published:2021-10-21
  • Supported by:
    National Natural Science Foundation of China (51777213); Key Projects of Equipment Pre-Research Foundation (61402090201); Natural Science Foundation of Hebei Province (E2019208443); Science and Technology Research Project of Hebei Province Colleges and Universities (ZD2021202)

摘要: 为了解自然环境下静电电磁脉冲辐射场诱发绝缘材料闪络的基本特性,进一步分析诱发闪络的特征规律,依据二次电子发射雪崩(SEEA)模型对外加场诱发材料表面闪络的电极电压阈值进行分析,建立了大气条件下静电电磁脉冲场诱发聚四氟乙烯(PTFE)表面闪络实验系统。采取理论分析和实验验证的方式对静电电磁脉冲场诱发材料表面针-板电极结构闪络的基本规律进行探索,初步得出了诱发闪络的基本规律。结果表明:静电电磁脉冲场能够诱导聚四氟乙烯材料表面发生闪络;在外界条件不变的情况下,随静电电磁脉冲辐射场场强增大,诱发闪络概率增大;在静电电磁脉冲辐射场场强一定的情况下,能确定该条件下诱发闪络的电压阈值,且随针-板电极间电压升高诱发闪络概率增大。所得结论对低轨环境下强电磁脉冲诱发绝缘材料闪络研究具有指导意义。

关键词: 聚四氟乙烯, 电磁诱发, 沿面闪络, 静电放电, 静电电磁脉冲

Abstract: To understand the basic characteristics of the flashover of insulating materials induced by the electrostatic electromagnetic pulse radiation field in the natural environment, and to further analyze the characteristics of the induced flashover, the electrode voltage threshold of the surface flashover induced by the external field is analyzed using the Secondary Electron Emission Avalanche (SEEA) model.An experimental system of electrostatic electromagnetic pulse field induced flashover on the surface of Polytetrafluoroethylene (PTFE) is established under atmospheric conditions.The methods of theoretical analysis and experimental verification are used to explore the basic laws of the electrostatic electromagnetic pulse field inducing the flashover of the needle-plate electrode structure on the surface of the material, and the basic laws of flashover induction are obtained.The research results show that the electrostatic electromagnetic pulse field can induce flashover on the surface of the PTFE material.When external conditions remain unchanged, the probability of flashover induction increases with the increase of the strength of the electrostatic electromagnetic pulse radiation field.When the strength of the static electromagnetic pulse radiation field is constant, the voltage threshold for inducing flashover under this condition can be determined, and the probability of flashover induction increases with the increase of the voltage between the needle and the plate electrode.The laws obtained in our study can provide some guidance for the study of the flashover of insulating materials induced by strong electromagnetic pulses in the low-orbit environment.

Key words: PTFE, electromagnetic induction, surface flashover, electrostatic discharge, electrostatic electromagnetic pulse

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