Research on the Buffering Characteristics of High Voltage Fast Mechanical Switch Based on Bi-Directional Electromagnetic Repulsion Mechanism
Wen Weijie1, Li Bin1, Li Botong1, Ma Jiuxin1, Huang Yulong2
1. Key Laboratory of Smart Grid of Ministry of Education Department of Electrical Engineering & Automation Tianjin University 300072 China;; 2. State Key Laboratory of Control and Simulation of Power System and Generation Equipment Department of Electrical Engineering Tsinghua University Beijing 100084 China
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.
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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2019, Vol. 34 
