混合型直流斷路器中高速開關的研究
裘鵬1，黃曉明1，陸翌1，呂瑋2，楊浩2，謝曄源2
1 國網浙江省電力公司電力科學研究院，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構的高速開關，通過理論近似計算和有限元仿真分析，給出了15 kV 高速開關的設計方案。分析了高速開關分閘彈跳過大并導致分閘失敗的原因，推導了分閘彈跳物理過程中各參數的數學關系。樣機測試結果表明，其9 mm 滿行程時間為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高速開關的需求。
關鍵詞：高速開關；電磁斥力機構；有限元分析；碰撞緩沖
中圖分類號：TM561 文獻標識碼：A 文章編號：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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