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重复频率脉冲下环氧树脂电树枝引发特性
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Electrical tree initiation characteristics under repetitive rate pulse in epoxy resin

摘    要
脉冲功率设备中绝缘材料的电老化特性影响它运行的可靠性、安全性及寿命。在最大幅值约34 kV、脉冲上升时间约40 ns、半高宽约70 ns的纳秒脉冲下, 进行了环氧树脂在不同脉冲重复频率下(1, 25, 50, 100, 300和500 Hz)的电树枝引发特性研究。实验得出环氧树脂电树枝老化的引发电压随频率变化的规律: 随着频率的升高, 环氧树脂材料老化产生电树枝的形态有所变化, 高频下丛林状电树枝明显增多;材料的引发电压基本随频率升高而降低, 正脉冲作用下E44环氧树脂的引发电压高于负脉冲作用下的;负脉冲下E44环氧树脂的引发电压高于有机玻璃材料的。讨论分析了各种因素随频率变化对环氧树脂材料电树枝引发特性的影响, 高频时空间电荷的作用明显增强。
标    签 电树枝老化   脉冲电压   重复频率   引发电压   epoxy resin   electrical tree aging   pulsed voltage   repetitive rate   initiation voltage  
 
Abstract
Electrical aging of insulation materials affects the reliability and security of pulsed power equipments. Based on the present pulsed source, the electrical tree initiation characteristic of epoxy resin is studied under different frequencies (1, 25, 50, 100, 300 and 500 Hz). The parameters of the pulsed source are as follows: peak voltage about 34 kV, rise time about 40 ns and half pulse width about 70 ns. The relationship between epoxy resin aging and voltage frequency is studied. Experiments demonstrate that tree initiation voltage decreases as frequency increases. The initiation voltage under positive pulse is higher than that under negative pulse. Insulation characteristic of E44 is better than that of PMMA. Factors influencing electrical tree initiation characteristic of E44 are discussed, and it is found that the effect of space charge is obviously strengthened under high frequency.

中图分类号 TM855

 
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所属栏目 粒子束技术

基金项目 国家自然科学基金项目(50777061)

收稿日期 2009/10/15

修改稿日期 2010/2/8

网络出版日期

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备注欧阳文敏(1985—), 男, 硕士研究生, 主要从事高电压及绝缘技术研究

引用该论文: Ouyang Wenmin,Wang Jue,Zhang Dongdong,Zhang Wei,Yan Ping. Electrical tree initiation characteristics under repetitive rate pulse in epoxy resin[J]. High Power Laser and Particle Beams, 2010, 22(6): 1378~1382
欧阳文敏,王珏,张东东,张伟,严萍. 重复频率脉冲下环氧树脂电树枝引发特性[J]. 强激光与粒子束, 2010, 22(6): 1378~1382


被引情况:


【1】张伟,王珏,张东东,欧阳文敏,严萍,高迎慧, "纳秒脉冲下聚合物电树枝引发实验方法",强激光与粒子束 23, 1117-1122(2011)

【2】李文峰,邵涛,张东东,章程,黄伟民,严萍, "重复频率纳秒脉冲源程控脉冲发生器",强激光与粒子束 24, 1186-1190(2012)



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参考文献
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