混合型直流斷路器中高速開關(guān)的研究
裘鵬1，黃曉明1，陸翌1，呂瑋2，楊浩2，謝曄源2
1 國(guó)網(wǎng)浙江省電力公司電力科學(xué)研究院，浙江 杭州 310014； 2 南京南瑞繼保電氣有限公司，江蘇 南京 211102
摘 要：高速開關(guān)是混合型直流斷路器的重要組成部分，提出了一種基于電磁斥力操作機(jī)構(gòu)的高速開關(guān)，通過理論近似計(jì)算和有限元仿真分析，給出了15 kV 高速開關(guān)的設(shè)計(jì)方案。分析了高速開關(guān)分閘彈跳過大并導(dǎo)致分閘失敗的原因，推導(dǎo)了分閘彈跳物理過程中各參數(shù)的數(shù)學(xué)關(guān)系。樣機(jī)測(cè)試結(jié)果表明，其9 mm 滿行程時(shí)間為2.9 ms，分閘反彈不超過2 mm，能夠滿足混合型直流斷路器對(duì)高速開關(guān)的需求。
關(guān)鍵詞：高速開關(guān)；電磁斥力機(jī)構(gòu)；有限元分析；碰撞緩沖
中圖分類號(hào)：TM561 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2015)12-0010-05
Study on High-Speed Switch in Hybrid Direct Current Circuit Breaker
QIU Peng1, HUANG Xiao-ming1, LU Yi1, LV Wei2, YANG Hao2, XIE Ye-yuan2
1 State Grid Zhejiang Electric Power Research Institute, Hangzhou 310014, China; 2 NR-Relay Electric Co., Ltd, Nanjing 211102, China
Abstract: High-speed switch is an important part of the hybrid direct current circuit breaker. This paper presented a high-speed switch based on electro-magnetic repulsion operating mechanism. After theoretical approximate calculation and finite element simulation analysis,this paper gave the designing scheme of 15 kV high-speed switches. Analysis was made to the reason why the separating brake of high-speed switches tripped too much to cause separating brake failure. This paper deduced each parametric mathematic relation in the physical process of separating brake tripping. The prototype testing result shows that the off-time for its 9 mm is 2.9 ms, and the separating brake rebound distance is not more than 2 mm, which meets the requirements of mixed type direct current circuit breaker high-speed switch.
Key words: high-speed switch; electro-magnetic repulsion mechanism; finite element analysis; crash buffer
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