双断口真空断路器配合特性仿真与试验

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摘要针对目前多断口真空断路器多采用并联均压电容,均压可能存在运行隐患的问题,通过研究双断口真空断路器间隙,配合和不同横磁（TMF）触头和纵磁（AMF）触头真空灭弧室组合取缔均压电容得到最佳的开断能力。基于真空电弧连续过渡模型建立了双断口真空断路器仿真模型,通过仿真与合成回路试验,研究了不同燃弧时间、不同期性和不同组合方式对开断能力的影响。仿真得到横纵组合方式具有最强的开断能力,且非同期动作（高压侧滞后动作）具有更强的开断能力,并得到了双断口真空断路器最佳间隙配合特性。试验结果验证了仿真结果,并且证明了双断口真空断路器非同期动作存在电压分布反转和开断突变区间。最后得到双断口真空断路器优化方案——对真空灭弧室的优化和非同期间隙的最佳配合,实现自均压效果进而取缔均压电容,为多断口真空断路器的发展提供了新的思路与方法。

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	葛国伟
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关键词 ：双断口, 开断能力, 燃弧时间, 非同期性, 最佳间隙配合

Abstract：In order to eliminate the operation risks of grading capacitors which are widely connected to vacuum circuit breakers (VCBs) with multi-break in parallel, the matching characteristics of double-break VCBs including different gaps and different contacts were studied. Thus the optimal breaking capacity can be obtained without grading capacitors. According to the continuous transition model, the simulation model of double-break VCBs was established. The influence of different arcing time, asynchronous breaking and different combinations on breaking capacity was studied. The combination of transverse magnetic field (TMF) and axial magnetic field (AMF) has the strongest breaking capacity. The breaking capacity will be stronger when the vacuum gap of the upper side is less than that of the lower side, and the optimal matching gaps characteristics were acquired by the simulation results. The test results confirmed the existence of voltage distribution reversal and abrupt arising region. Furthermore, the optimum proposal of double-break VCBs, which included optimization design of the interrupters and optimal matching vacuum gaps is proposed to realize the even voltage distribution without grading capacitors.

Key words： Double-break breaking capacity arcing time asynchrous operating optimal matching gaps

收稿日期: 2014-08-25 出版日期: 2016-12-02

PACS:

TM561.1

基金资助:国家自然科学基金（51277020、51477024和51337001）,中央高校基本科研业务专项基金（DUT15ZD234）和强电磁工程与新技术国家重点实验室（华中科技大学）开放课题基金（2016KF005）资助项目

作者简介: 葛国伟1987年生,男,博士,主要从事智能化高压电器及高电压新技术、多断口真空开关技术和真空电弧动态恢复研究。E-mail:geguowei@mail.dlut.edu.cn（通信作者）;廖敏夫1975年生,男,教授,博士生导师,主要从事智能化高压电器及高电压新技术、多断口真空开关技术和真空触发开关技术研究。E-mail:mfliao@dlut.edu.cn

引用本文:

葛国伟, 廖敏夫, 黄金强, 段雄英, 苏阔, 邹积岩. 双断口真空断路器配合特性仿真与试验[J]. 电工技术学报, 2016, 31(22): 57-65. Ge Guowei, Liao Minfu, Huang Jinqiang, Duan Xiongying, Su Kuo, Zou Jiyan. Simulation and Experimental of Matching Characteristics of Vacuum Circuit Breakers with Double-Break. Transactions of China Electrotechnical Society, 2016, 31(22): 57-65.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I22/57

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