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辅助放电针对气体间隙直流自击穿特性的影响

石凌 谢霖燊 郭帆 贾伟 王海洋 陈志强 程乐 王艺 吴刚 肖晶 梅锴盛 王戈飞 花见涛

石凌, 谢霖燊, 郭帆, 等. 辅助放电针对气体间隙直流自击穿特性的影响[J]. 强激光与粒子束, 2024, 36: 055013. doi: 10.11884/HPLPB202436.230371
引用本文: 石凌, 谢霖燊, 郭帆, 等. 辅助放电针对气体间隙直流自击穿特性的影响[J]. 强激光与粒子束, 2024, 36: 055013. doi: 10.11884/HPLPB202436.230371
Shi Ling, Xie Linshen, Guo Fan, et al. Influence of auxiliary discharge needle on direct current self-breakdown characteristics of the gas gap[J]. High Power Laser and Particle Beams, 2024, 36: 055013. doi: 10.11884/HPLPB202436.230371
Citation: Shi Ling, Xie Linshen, Guo Fan, et al. Influence of auxiliary discharge needle on direct current self-breakdown characteristics of the gas gap[J]. High Power Laser and Particle Beams, 2024, 36: 055013. doi: 10.11884/HPLPB202436.230371

辅助放电针对气体间隙直流自击穿特性的影响

doi: 10.11884/HPLPB202436.230371
基金项目: 强脉冲辐射环境模拟与效应全国重点实验室基金项目
详细信息
    作者简介:

    石 凌,shiling@nint.ac.cn

  • 中图分类号: TM831

Influence of auxiliary discharge needle on direct current self-breakdown characteristics of the gas gap

  • 摘要: 为降低气体放电间隙直流条件下自击穿电压分散性,尽可能不影响其自击穿电压,基于环形电极放电间隙,设计了一种在阴极中心植入辅助放电针的辅助放电电极结构。通过电场仿真,研究了辅助放电针直径、长度和顶部倒角对放电间隙场畸变的影响。实验研究了放电间隙无辅助放电针和植入辅助放电针后,其在干燥空气和SF6气体中的直流自击穿特性。结果表明:辅助放电针直径越小、长度越长,电极环对其电场屏蔽作用越弱,放电间隙场畸变强度越大;辅助放电针对SF6气体放电间隙直流自击穿电压影响较小,随着场畸变系数的增大,同一气压下干燥空气自击穿电压下降百分数为SF6气体自击穿电压下降百分数的2~3倍;辅助放电针对直流条件下干燥空气和SF6气体放电间隙自击穿电压稳定性具有有益作用,分散性减小百分数较无辅助放电针结构均提高约25%。
  • 图  1  电极结构剖面图

    Figure  1.  Profile of electrode structures

    图  2  电极间隙电场分布

    Figure  2.  Electric field distribution in electrode gap

    图  3  场畸变系数变化图

    Figure  3.  Variation diagram of field distortion coefficient

    图  4  实验平台示意图

    Figure  4.  Schematic diagram of experimental platform

    图  5  干燥空气中击穿电压及击穿电压标准差变化图

    Figure  5.  Variation diagram of breakdown voltage and its standard deviation in dry air

    图  6  SF6气体中击穿电压及击穿电压标准差变化图

    Figure  6.  Variation diagram of breakdown voltage and breakdown voltage standard deviation in SF6

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出版历程
  • 收稿日期:  2023-10-24
  • 修回日期:  2024-04-15
  • 录用日期:  2024-03-16
  • 网络出版日期:  2024-04-18
  • 刊出日期:  2024-04-28

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