一種新型螺管式電磁脫扣器的分析
劉志偉
（國網(wǎng)山東省電力公司濰坊供電公司, 山東 濰坊 261021）
摘 要：針對一種新型無靜鐵芯螺管式脫扣器結構，應用有限元分析軟件Ansys計算其靜態(tài)電磁吸力，并且對比分析了新型和傳統(tǒng)型脫扣器的靜態(tài)特性。運用Adams軟件對微型斷路器建模仿真開斷過程，對比分析了新型與傳統(tǒng)型脫扣器的動態(tài)特性以及其對MCB開斷性能的影響。結果表明：新型脫扣器電磁吸力受氣隙長度影響較小，隨之減小而略有增大；在短路電流較小時，新型脫扣器動作時間較短，進而可以加快斷路器的分斷速度；在短路電流較大時，新型脫扣器沒有體現(xiàn)出更好的速動性，也不能加快斷路器的分斷速度。
關鍵詞：螺管式電磁脫扣器；靜態(tài)特性；動態(tài)特性；分斷速度；微型斷路器
中圖分類號：TM561 文獻標識碼：B 文章編號：1007-3175(2018)12-0044-06
Analysis of a New Type of Solenoid Electromagnetic Release
LIU Zhi-wei
（Weifang Power Supply Company of State Grid Corporation, Weifang 261021, China）
Abstract: In allusion to a new type of solenoid electromagnetic release structure without static iron core, the static state electromagnetic force was calculated with the finite element analysis software Ansys and the static characteristics of new and traditional solenoid magnetic release was analyzed and compared. The software Adams was used to carry out miniature circuit breaker modeling and making and breaking simulation. The dynamic characteristics of new and traditional solenoid magnetic release, as well as the impacts on the miniature circuit breaker were analyzed and compared. The results show that the magnetic force of new solenoid magnetic release was less influenced by gap length, which increases slightly with the decreases of gap length. The shorter tripping time of new release expedites the breaking process of circuit breaker under the condition of small short-circuit current. The new release hasn’t obvious speed and doesn’t expedite the breaking process of circuit breaker under the condition of large short-circuit current.
Key words: solenoid electromagnetic release; static characteristic; dynamic characteristic; breaking speed; miniature circuit breaker
參考文獻
[1] 陳德桂，李興文. 低壓斷路器的虛擬樣機技術[M]. 北京：機械工業(yè)出版社，2009.
[2] LINDMAYER M, STAMMBERGER H.Application of Numerical Field Simulations for Low Voltage Circuit Breakers[J]. IEEE Transactions on Components Packaging & Manufacturing Technology Part A，1995，18(3)：708-717.
[3] XIANG Honggang, CHEN Degui, LI Xingwen, et al. Investigation on the Dynamic Characteristics of a Magnetic Release in Molded Case Circuit Breaker[J]. IEICE Transactions on Electronics，2004，E88-C(8)：1647-1651.
[4] 向洪崗，陳德桂，李興文，等. 應用有限元方法分析塑殼斷路器磁脫扣器的動作特性[J]. 西安交通大學學報，2005，39(8)：108-112.
[5] 趙柳，陳德桂，李興文，等. 一種基于多體動力學分析磁脫扣器動態(tài)特性的方法[C]// 第一屆電器裝備及其智能化學術會議論文集，2007.
[6] WANG Qian, LI Xingwen. A Method to Predict the Spring Parameters of the Adjustable Magnetic Release for Molded Case Circuit Breakers[J]. IEICE Transactions on Electronics，2010，E93-C(9)：1449-1451.
[7] 屈建宇， 趙虎， 吳剛， 等. 高速直流斷路器用磁脫扣器調節(jié)特性研究[J]. 高電壓技術，2015，41(9)：3130-3135.
[8] LOMBARD P, MEUNIER G.A general purpose method for electric and magnetic combined problems for 2D, axi symmetric and transient systems[J]. IEEE Transactions on Magnetics，1993，29(2)：1737-1740.
[9] 郭衛(wèi)東，李守忠，馬璐. ADAMS 2013應用實例精講教程[M]. 北京：機械工業(yè)出版社，2015.
[10] 紐春萍，陳德桂，張敬菽，等. 電動斥力作用下低壓斷路器分斷特性的研究[J]. 電工技術學報，2005，20(7)：34-38.
[11] 全國低壓電器標準化技術委員會. 低壓開關設備和控制設備 第2部分：斷路器：GB 14048.2—2008[S]. 北京：中國標準出版社，2008：5.
