Simulation of Surface Erosion of Anode under High-current Vacuum Arcs

被引：0

作者：

Tian, Yunbo ^{[1
]}

Wang, Zhenxing ^{[1
]}

Jiang, Yanjun ^{[1
]}

Ma, Hui ^{[1
]}

Liu, Zhiyuan ^{[1
]}

Geng, Yingsan ^{[1
]}

Wang, Jianhua ^{[1
]}

机构：

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

来源：

PROCEEDINGS OF THE 27TH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM (ISDEIV), VOL 1 | 2016年

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

AXIAL MAGNETIC-FIELD; TEMPERATURE; INTERRUPTION; DECAY; MODEL;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The anode melting and erosion process has a significant effect on the interruption of a high-current vacuum arc. The objective of this paper is to theoretically investigate the mechanism of anode surface erosion caused by a combined effect of vacuum arc heating and the blow effect of arc pressure. A model of fluid flow and heat transfer of an anode region in a vacuum interrupter's high-current interruption process is developed. The results show that, under the combined effect of arc heating and arc pressure, an obvious erosion on anode surfaces was seen for peak arcing current of 20 kA. The flow of liquid metal started after 5 ms of arcing, the maximum velocity was 0.95 m/s. This flow of liquid metal on anode surfaces driven by arc plasma may redistribute the thermal energy of molten liquid metal. As a result, the maximum temperature of an anode surface did not stay in the center of an anode surface.

引用

页码：329 / 332

页数：4

共 19 条

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