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SF6中氧化铝环氧复合材料的纳秒脉冲闪络特性

孙楚昱 王海洋 谢霖燊 迟晓红

孙楚昱, 王海洋, 谢霖燊, 等. SF6中氧化铝环氧复合材料的纳秒脉冲闪络特性[J]. 强激光与粒子束, 2021, 33: 055002. doi: 10.11884/HPLPB202133.200289
引用本文: 孙楚昱, 王海洋, 谢霖燊, 等. SF6中氧化铝环氧复合材料的纳秒脉冲闪络特性[J]. 强激光与粒子束, 2021, 33: 055002. doi: 10.11884/HPLPB202133.200289
Sun Chuyu, Wang Haiyang, Xie Linshen, et al. Flashover characteristics of epoxy/Al2O3 composite under nanosecond rising pulses in SF6 gas[J]. High Power Laser and Particle Beams, 2021, 33: 055002. doi: 10.11884/HPLPB202133.200289
Citation: Sun Chuyu, Wang Haiyang, Xie Linshen, et al. Flashover characteristics of epoxy/Al2O3 composite under nanosecond rising pulses in SF6 gas[J]. High Power Laser and Particle Beams, 2021, 33: 055002. doi: 10.11884/HPLPB202133.200289

SF6中氧化铝环氧复合材料的纳秒脉冲闪络特性

doi: 10.11884/HPLPB202133.200289
基金项目: 强脉冲辐射环境模拟与效应国家重点实验室基金项目(SKLIPR1901Z)
详细信息
    作者简介:

    孙楚昱(1992—),女,硕士,助理研究员,从事脉冲功率及高电压绝缘研究

  • 中图分类号: TM85

Flashover characteristics of epoxy/Al2O3 composite under nanosecond rising pulses in SF6 gas

  • 摘要: 氧化铝掺杂环氧树脂复合材料在电力绝缘设备中应用广泛,然而人们对其在纳秒脉冲下的绝缘性能研究较少,这限制了它在指导脉冲功率装置中的应用。为探究其在纳秒脉冲下的沿面绝缘性能,对氧化铝掺杂环氧树脂复合材料在前沿数十ns快脉冲电压下的闪络特性进行了研究,结果显示,其闪络电场较纯环氧有较大提高,闪络电压符合韦伯分布。实验表明,闪络电压随电压上升率的增加而显著增加,从5.8 kV/ns时的108 kV上升到20.5 kV/ns时的226 kV,增幅超过1倍。闪络时延随电压上升率的上升呈现“先快速下降、后趋于平缓”的趋势。在试样闪络通道表面观测到明显的碳化现象,说明实验中的闪络放电对复合材料有破坏性影响。
  • 图  1  实验系统整体示意图

    Figure  1.  Schematic of experiment setup

    图  2  典型未闪络波形及不同电压上升率的闪络波形

    Figure  2.  Typical unflashover voltage waveform and flashover waveforms with different pulse steepness

    图  3  韦伯分布图

    Figure  3.  Weibull probability plot

    图  4  闪络电压和闪络时延与电压上升率的关系

    Figure  4.  Relationship of flashover voltage, time delay and pulse steepness

    图  5  试样照片及闪络区域SEM图像

    Figure  5.  Pictures of samples and SEM image of surface after flashover

    表  1  累积概率函数

    Table  1.   Accumulative frequency

    flashover voltage/kVflashover amountaccumulated amountFV
    81−85110.0133
    86−90120.0267
    91−95240.0533
    96−10011150.2000
    101−10524390.5200
    106−11014530.7067
    111−11510630.8400
    116−1208710.9467
    121−1252730.9733
    126−1301740.9867
    131−1351751
    下载: 导出CSV

    表  2  部分纯环氧材料闪络场强对比

    Table  2.   Comparison with flashover electric field of pure epoxy

    sourcematerialelectrodeflashover electric field/(kV·cm−1pulse rise time/(ns)SF6 pressure/(MPa)
    this paperepoxy/Al2O3 compositefinger224520.2
    ref.[19]epoxy resinfinger1131000.2
    ref.[20]epoxy resinfinger55200.2
    ref.[21]epoxy resinfinger43not mentioned0.2
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-10-19
  • 修回日期:  2021-03-17
  • 网络出版日期:  2021-04-12
  • 刊出日期:  2021-05-20

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