Influence of Pulse Steepness on Vacuum Flashover of Casting Epoxy Resin

被引：0

作者：

Chen Yu ^{[1
]}

Cheng Yonghong ^{[1
]}

Wang Zengbin ^{[1
]}

Zhou Jiabin ^{[1
]}

Meng Guodong ^{[1
]}

Wu Kai ^{[1
]}

Li Shengtao ^{[1
]}

机构：

[1] Xi An Jiao Tong Univ, State Key Lab Elect Insulat & Power Equipment, Xian 710049, Peoples R China

来源：

PLASMA SCIENCE & TECHNOLOGY | 2009年 / 11卷 / 01期

基金：

中国国家自然科学基金;

关键词：

pulse steepness; casting epoxy resin; vacuum flashover; electron emission equation; flashover time delay; SURFACE FLASHOVER; INSULATORS;

D O I：

暂无

中图分类号：

O35 [流体力学]; O53 [等离子体物理学];

学科分类号：

070204 ; 080103 ; 080704 ;

摘要：

Research on the pulsed flashover characteristics of vacuum insulation material is significant for the design and manufacture of pulse power devices. In view of the voltage increase rate of the fast pulse (pulse steepness), the vacuum. flashover characteristics of pure epoxy under different steepnesses is investigated by using a pulse generator with parameters of a rise time of 40 ns and a full width at half maximum of 2.5 mu s. Pulses with six levels of steepness were achieved by changing the charging voltage of the generator. Based on the linear equation and electron emission equation, the relationship between the. flashover voltage and pulse steepness was. fitted. By virtue of the. fitted formula, it was possible to predict the. flashover voltage under near DC or higher steepness conditions. Based on the electron emission equation, the relationship between the time delay and flashover field was also. fitted. Result shows that F-N electron emission dominates the flashover process.

引用

页码：89 / 93

页数：5

共 15 条

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