多断口真空开关电弧磁场调控需求与机理

doi:10.19595/j.cnki.1000-6753.tces.171592

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摘要为寻求多断口真空开关有效的磁场调控措施,提出多断口真空开关协同效应的概念,分析了多断口真空开关的磁场调控需求——动态电压分布与动态介质恢复强度协同作用。在此基础上,搭建了多断口真空开关磁场调控试验研究平台,设计了试验用脉冲磁场调控系统,研究了不同磁场方式、脉冲宽度、磁场强度、施加时刻等对真空电弧发展过程及弧后电流、电荷等特性的影响规律。以动态电压分布为调控目标,研究了不同磁场组合方式下的动态电压分布特性,得到了磁场调控对电弧发展、弧后特性、动态电压分布的影响规律。实验结果表明,磁场调控机理为磁场调控电弧发展影响零区及弧后特性,进而影响弧后动态电压分布与动态绝缘特性。该研究结果为串联用真空灭弧室优化设计及多断口真空开关磁场调控提供了参考依据。

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	葛国伟
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关键词 ：多断口真空开关, 磁场调控, 弧后电流, 协同效应

Abstract：In order to seek the effective magnetic arc control method, the synergy effect in multi-break VCBs is proposed and the demand of the magnetic arc control of the multi-break VCBs which is the synergy interaction between the dynamic voltage distribution (DVD) and dielectric recovery strength (DRS) is analyzed. Based on the synergy effect, the test platform of the magnetic arc control in multi-break VCBs was set up and the magnetic arc control system was designed. The influence of the pulse width, control moment and magnetic field on the vacuum arc development and the post arc characteristic was investigated. The even DVD was supposed as control target, the effect of the different combinations of external AMF on the DVD was conducted. The influence of the magnetic arc control on the vacuum arc development, the post arc characteristic and DVD was obtained. The test results indicate that the mechanism of the magnetic arc control in multi-break VCBs is that the magnetic arc control affects the vacuum arc, current zero and post arc characteristic and then the DVD and DRS is affected by the post arc characteristic. The paper is useful to optimal design for the special serial VCBs and the magnetic arc control of multi-break VCBs.

Key words： Multi-break VCBs magnetic arc control post arc current synergy effect

收稿日期: 2017-11-22 出版日期: 2018-11-12

PACS:

TM561

基金资助:国家自然科学基金（51407163,51477024,51777025）、中国博士后科学基金（2017M622370）和国家轨道交通电气化与自动化工程技术研究中心开放课题（NEEC-2017-B07）资助

作者简介: 葛国伟男,1987年生,博士,讲师,研究方向为智能化高压电器及高电压新技术。E-mail: ggw@zzu.edu.cn;程显男,1982年生,博士,副教授,硕士生导师,研究方向为高压电器及高电压新技术。E-mail: chengxian@zzu.edu.cn（通信作者）

引用本文:

葛国伟, 程显, 张鹏浩, 张豪, 廖敏夫. 多断口真空开关电弧磁场调控需求与机理[J]. 电工技术学报, 2018, 33(21): 5007-5014. Ge Guowei, Cheng Xian, Zhang Penghao, Zhang Hao, Liao Minfu. Mechanism and Demand of the Magnetic Arc Control in Multi-Break VCBs. Transactions of China Electrotechnical Society, 2018, 33(21): 5007-5014.

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