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预电离间隙在不同气体介质中的正负极性击穿特性

王艺 郭帆 陈志强 贾伟 王戈飞 石凌 谢霖燊 吴刚 吴伟

王艺, 郭帆, 陈志强, 等. 预电离间隙在不同气体介质中的正负极性击穿特性[J]. 强激光与粒子束, 2024, 36: 055014. doi: 10.11884/HPLPB202436.230392
引用本文: 王艺, 郭帆, 陈志强, 等. 预电离间隙在不同气体介质中的正负极性击穿特性[J]. 强激光与粒子束, 2024, 36: 055014. doi: 10.11884/HPLPB202436.230392
Wang Yi, Guo Fan, Chen Zhiqiang, et al. Breakdown characteristics of pre-ionization trigger gap in different gases under bipolarity pulse[J]. High Power Laser and Particle Beams, 2024, 36: 055014. doi: 10.11884/HPLPB202436.230392
Citation: Wang Yi, Guo Fan, Chen Zhiqiang, et al. Breakdown characteristics of pre-ionization trigger gap in different gases under bipolarity pulse[J]. High Power Laser and Particle Beams, 2024, 36: 055014. doi: 10.11884/HPLPB202436.230392

预电离间隙在不同气体介质中的正负极性击穿特性

doi: 10.11884/HPLPB202436.230392
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资助项目(SKLIPR2105)
详细信息
    作者简介:

    王 艺,wangyi@nint.ac.cn

  • 中图分类号: TM89

Breakdown characteristics of pre-ionization trigger gap in different gases under bipolarity pulse

  • 摘要: 针对自触发预电离开关在不同电压等级下应用不同气体介质的需要,以及在双边驱动电磁脉冲模拟器中加载正负极性脉冲的需求,研究了预电离间隙在N2、N2/SF6混合气和SF6中正负极性下的击穿特性。研究了不同介质中间隙的击穿电压和时延随气压的变化规律,对比了正负极性下的间隙击穿特性。研究结果表明,在本文实验条件下,预电离间隙在N2中的击穿过程相对更为稳定,且N2中击穿电压随气压变化线性度最佳。相比N2和混合气,间隙击穿电压仅在SF6中随气压增大呈现饱和趋势。在一定气压范围内,N2在负极性下的击穿电压略高于正极性,混合气和SF6中负极性下的击穿电压明显高于正极性,间隙的击穿过程具有一定的极性效应。相比混合气和N2,间隙在SF6中的正负极性击穿电压绝对差值和击穿时延绝对差值都相对较高,为减小双边自触发预电离开关的同步时延差,应首选N2为预电离间隙的绝缘介质。在工程应用中需考虑极性效应和不同气体介质对预电离间隙击穿特性的影响。
  • 图  1  自触发预电离开关结构

    Figure  1.  Self-triggered pre-ionized switch

    图  2  实验回路示意图

    Figure  2.  Schematic diagram of the experimental circuit

    图  3  实验典型波形

    Figure  3.  Typical waveform of the experimental results

    图  4  N2中预电离间隙击穿电压及击穿时延

    Figure  4.  Breakdown voltage and delay time of pre-ionization gap in N2

    图  5  N2和SF6混合气中预电离间隙击穿电压及击穿时延

    Figure  5.  Breakdown voltage and delay time of pre-ionization gap in mixture of N2 and SF6

    图  6  SF6中预电离间隙击穿电压及击穿时延

    Figure  6.  Breakdown voltage and delay time of pre-ionization gap in SF6

    图  7  不同气体中预电离间隙击穿电压和时延差值及百分比

    Figure  7.  Difference and percentage of breakdown voltage and delay time between positive and negative polarity for pre-ionization gap in different gases

    表  1  不同气体中击穿电压分散性和击穿时延抖动

    Table  1.   Variance percentage of breakdown voltage and jitter of delay time for different gas

    polarity variance percentage/%(MPa) jitter/ns(MPa)
    N2 N2/SF6(1∶1) SF6 N2 N2/SF6(1∶1) SF6
    positive 0.5(0.6)~4.9(0.1) 6.0(0.2)~10.1(0.25) 2.3(0.1)~7.3(0.15) 0.9(0.6)~4.2(0.1) 5.6(0.15)~9.3(0.25) 2.0(0.1)~6.3(0.05)
    negative 0.8(0.6)~3.3(0.2) 3.4(0.3)~9.1(0.1) 1.8(0.075)~7.0(0.05) 1.4(0.6)~3.3(0.2) 3.8(0.15)~7.7(0.1) 2.3(0.075)~6.6(0.05)
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出版历程
  • 收稿日期:  2023-11-06
  • 修回日期:  2024-02-01
  • 录用日期:  2024-02-01
  • 网络出版日期:  2024-02-20
  • 刊出日期:  2024-04-28

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