基于双向电磁斥力机构的高压快速开关缓冲特性研究

doi:10.19595/j.cnki.1000-6753.tces.L80111

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摘要高压直流断路器对机械开关提出了进一步向快速性和高电压方向发展的需求,而缓冲问题是研制高压快速开关的瓶颈问题之一。该文针对基于双向电磁斥力机构的高压快速开关缓冲特性展开研究。首先,通过实验获得了无缓冲、聚氨酯缓冲、液压缓冲和电磁缓冲四种实验条件下快速开关的行程特性,证明了电磁缓冲是最适于快速开关的缓冲方式。然后,通过改进等效电路法,对采用电磁驱动和电磁缓冲技术的快速开关建立了综合仿真模型,通过对40.5 kV快速真空开关样机进行实验,验证了仿真模型的有效性。最后,基于仿真模型,从理论上揭示了缓冲电流方向和缓冲施加时刻对电磁缓冲效果的影响规律,并给出了其设计原则。该文的研究成果解决了快速开关中的缓冲难题,为研制高压快速开关奠定了基础。

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	温伟杰
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关键词 ：高压快速开关, 双向电磁斥力机构, 电磁缓冲仿真模型, 电磁缓冲特性

Abstract：The development of high voltage direct current circuit breaker demands for high voltage fast mechanical switch (HV-FMS). However, the buffering difficulty is one of the bottle necks to manufacture HV-FMS. This paper is focused on researches on buffering characteristics of HV-FMS based on bi-directional electromagnetic repulsion mechanism (ERM). First, with different buffer measures, the travel characteristics of HV-FMS were obtained by experiments, and the experimental results proved that electromagnetic buffer is the most suitable measure for HV-FMS. Then, with the metal disk in ERM equivalent to a single-turn coil, a mathematical model for HV-FMS based on electromagnetic drive and buffer has been established, and the model was verified by experiments on 40.5 kV fast mechanical vacuum switch prototype. In the end, based on the mathematical model, the influence of the direction of buffer current and the initiating time of buffer on operating characteristics of HV-FMS were revealed and theoretical reasons have also been analyzed. This paper has solved the buffering difficulty in HV-FMS, and as a result, a foundation for the development of HV-FMS has been established.

Key words： High voltage fast mechanical switch bidirectional electromagnetic repulsion mechanism simulation model of electromagnetic buffer buffering characteristic of electromagnetic buffer

收稿日期: 2018-06-24 出版日期: 2019-04-17

PACS:

TM561

基金资助:中国博士后科学基金（2017M621071,2018T110198）和国家自然科学基金(51677126, 51677095) 资助

通讯作者: 李斌男,1976年生,教授,博士生导师,研究方向为电力系统保护与控制。E-mail：binli@tju.edu.cn

作者简介: 温伟杰女,1989年生,博士,讲师,研究方向为快速开关、直流电网及其关键设备。E-mail：weijie.wen@tju.edu.cn

引用本文:

温伟杰, 李斌, 李博通, 马久欣, 黄瑜珑. 基于双向电磁斥力机构的高压快速开关缓冲特性研究[J]. 电工技术学报, 2019, 34(7): 1449-1458. Wen Weijie, Li Bin, Li Botong, Ma Jiuxin, Huang Yulong. Research on the Buffering Characteristics of High Voltage Fast Mechanical Switch Based on Bi-Directional Electromagnetic Repulsion Mechanism. Transactions of China Electrotechnical Society, 2019, 34(7): 1449-1458.

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