Optimization and Experiment of Magnetic Field Distribution of Contacts for Vacuum Generator Circuit Breaker

被引：0

作者：

Fei X. ^{[1
]}

Zhu Z. ^{[1
]}

Yuan D. ^{[1
]}

Wang H. ^{[1
]}

Ma M. ^{[1
]}

机构：

[1] Pinggao Group Co., Ltd., Pingdingshan

来源：

Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 11期

关键词：

Arc extinguish capability; Arcing test; Axial magnetic field; Coil type contact; Cup type contact; Distribution of magnetic field; Generator circuit breaker; Partial burn;

D O I：

10.13336/j.1003-6520.hve.20190410005

中图分类号：

学科分类号：

摘要：

For the special working conditions of circuit breaker of generator, we experimentally investigated cup-type and coil-type contacts which are mature in market from the point of view of vacuum arc extinguishing. Firstly, we analyzed the axial magnetic field distribution of typical cup-type and coil-type contacts and compared the differences for these two structures. Secondly, we optimized the key structure of contacts stated above by using simulation analysis and compared the magnetic field distribution before and after improvement. Lastly, based on two types of improved contacts, arcing tests under different short circuit currents were carried out in a removable vacuum cavity. The experimental results reveal that the diffusion state of arc can be better kept on the whole surface of the cup-type contact, and arc tends to gather and partially burn for the coil-type contact. Therefore, we predict that the cup-type contact performs better than the coil-type contact for arc extinguishing and burning erosion resistance under greater short circuit current. The research of magnetic field and arcing test carried out in this paper will supply an important basis for further experimental research of generator circuit breaker. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.

引用

页码：3700 / 3707

页数：7

共 22 条

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