Lifetime Test of Capacitors Used in Marx Generator

LI Jingya; ZENG Jiangtao; SUN Jianfeng; SUN Jiang; CONG Peitian; WANG Zhiguo; YANG Hailiang; CHEN Wei

doi:10.14044/j.1674-1757.pcrpc.2015.03.012

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Lifetime Test of Capacitors Used in Marx Generator

更新时间：2024-09-14

- Lifetime Test of Capacitors Used in Marx Generator
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 36, Issue 3, Pages: 53-55(2015)
- 作者机构：
  
  西北核技术研究所强脉冲辐射模拟与效应国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2015.03.012
  CLC： TM53
- Published：2015，
- 稿件说明：
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[1]李静雅,曾江涛,孙剑锋,孙江,丛培天,王志国,杨海亮,陈伟.“剑光一号”Marx电容器寿命测试[J].电力电容器与无功补偿,2015,36(03):53-55+76.

LI JINGYA, ZENG JIANGTAO, SUN JIANFENG, et al. Lifetime Test of Capacitors Used in Marx Generator. [J]. Power capacitor & reactive power compensation, 2015, 36(3): 53-55.
[1]李静雅,曾江涛,孙剑锋,孙江,丛培天,王志国,杨海亮,陈伟.“剑光一号”Marx电容器寿命测试[J].电力电容器与无功补偿,2015,36(03):53-55+76. DOI： 10.14044/j.1674-1757.pcrpc.2015.03.012.

LI JINGYA, ZENG JIANGTAO, SUN JIANFENG, et al. Lifetime Test of Capacitors Used in Marx Generator. [J]. Power capacitor & reactive power compensation, 2015, 36(3): 53-55. DOI： 10.14044/j.1674-1757.pcrpc.2015.03.012.

摘要

对国产50kV/0.44μF电容器进行了抽样测试

在国内首次开展了电容器寿命可靠性初步研究

在此基础上对"剑光一号"Marx发生器可靠性进行了预估。实验表明

电容器故障主要为边缘和电极引出部位的绝缘击穿

分析认为这与电极/电介质边缘处的电场较强有关。利用电容器失效数据拟合得到Weibll分布特征参数

根据95%置信区间内电容器的失效概率

得到了该型电容器在50kV下的平均预期寿命约7 300次

Marx发生器中66只电容器的平均故障间隔次数为221次。

Abstract

In this paper

the 50kV/0.44 μF capacitor is subject to sampling test.The preliminary study on the life reliability of capacitor is performed for the first time in China and

on the basis of which the reliability of Marx generator is predicted.It is shown by the experiment that the capacitors’ failure is mainly the dielectric breakdown at the edge and the outlet position of electrode.It is thought by analysis that this is related to the strong electric field at the edge of electrode/dielectrics.The Weibull distribution feature parameters are obtained by the use of failure data fitting of capacitor.It is obtained that the average predicted life of such type of capacitor under 50kV is about 7 300 times and the mean time between failures（MTBF）of 66 capacitors in the Marx generator are about 221 times average in accordance with the failure probability of capacitor within 95% confidence interval.

关键词

脉冲电容器寿命概率威布尔分布

Keywords

pulse capacitorlifetimeprobabilityweibull distribution

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