Modeling and simulation of the influence of contact structure on the characteristics of high current vacuum arc plasma

被引：9

作者：

Zhao, Lihua ^{[1
]}

Zhu, Haiyi ^{[1
]}

Gou, Hangyuan ^{[1
]}

Ren, Junwen ^{[1
]}

Wang, Zhong ^{[1
]}

Ning, Wenjun ^{[1
]}

Wang, Lijun ^{[2
]}

Huang, Xiaolong ^{[1
]}

机构：

[1] Sichuan Univ, Coll Elect Engn, Chengdu 610065, Peoples R China

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

来源：

PHYSICS OF PLASMAS | 2020年 / 27卷 / 08期

基金：

中国国家自然科学基金;

关键词：

AXIAL MAGNETIC-FIELD; EXPANSION;

D O I：

10.1063/5.0011956

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：

With the advantages of environmental protection, small size, and light weight, the vacuum circuit breaker has been widely used in power systems. At present, it is developing toward the direction of high voltage and high current. In this paper, the magnetic field simulation model of a cup-shaped axial magnetic contact system is established, and the actual magnetic field data in the arc area are obtained as the boundary conditions, and then a three-dimensional steady-state magnetohydrodynamic model of the vacuum arc is established. The plasma parameter distribution characteristics in the vacuum arc area are studied by changing the number of slots in the contact plate, the angle of the contact cup chute, the length of the slot in the contact plate, and the central process hole. On this basis, a new type of embedded axial magnetic contact system including an embedded magnetic ring and a reverse contact cup is proposed, and the influence of changing the angle and number of inclined slots of the embedded contact cup on the arc distribution characteristics at the peak current and current zero is further studied. The simulation results show that the new structure contact is helpful to the breaking capacity of the vacuum switch and has a guiding significance for the design of the vacuum circuit breaker. By comparison, our simulation results have the same trend with the experimental results of other researchers.

引用

页数：14

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