摘要详情

ID / 提交时间

618 / 2017-05-15 18:39:30

标题

Anode Spot Threshold Current and Critical Heat flux Density for Different Contact Material in High-Current Vacuum Arcs

关键字

anode spot , heat flux density, contact material

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状态

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作者

Zaiqin Zhang / Xi’an Jiaotong University

Hui Ma / State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an 710049, China

Zhiyuan liu / State Key Laboratory of Electric Power Equipment, Xi’an Jiaotong University

Yingsan Geng / State Key Laboratory of Electric Power Equipment, Xi’an Jiaotong University

Jianhua Wang / Xi'an Jiaotong University

Xiuli Yi / State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University No. 28 Xianning West Road, Xi’an, Shaanxi Province 710049, People’s Republic of China

摘要

The objective of this work is to determine the anode spot threshold heat flux density for different contact material in high current vacuum arc. Both experiment and numerical simulation are conducted in this work. In the experiment, the anode spot threshold current of different contact material were determined. In the numerical simulation, a 3-D magnetohydrodymanic model are adopted to describe vacuum arc, and the critical heat flux density at the anode spot threshold current is obtained in the simulation result. The results reveal the relationship between the critical heat flux density and the thermal characteristics of contact material.