基于正交实验新型真空灭弧室触头磁场仿真与参数优化设计  

Simulation and Optimization of the Contact Magnetic Field of a New Type of Vacuum Interrupter Based on Orthogonal Experiment

作　　者：董华军[1,2] 温超阳 孙鹏 刘林林 郭方准[1] Dong Huajun;Wen Chaoyang;Sun Peng;Liu Linlin;Guo Fangzhun(School of Mechanical Engineering Dalian Jiaotong University,Dalian 116028 China;Pinggao Group Co.Ltd,Pingdingshan 467001 China)

机构地区：[1]大连交通大学机械工程学院,大连116028 [2]平高集团有限公司,平顶山467001

出　　处：《电工技术学报》2022年第21期5598-5606,共9页Transactions of China Electrotechnical Society

基　　金：国家自然科学基金项目(51477023);辽宁省自然科学基金计划项目(2019-MS-036)资助。

摘　　要：通过触头结构设计实现真空电弧有效调控是提高真空开关开断性能的重要措施之一。为提高真空灭弧室触头开断性能,该文采用SolidWorks建立了一种新型带铁心真空灭弧室3D模型,并利用三维有限元法,对触头片的开槽长度、开槽角度、工艺孔直径以及铁心个数四个参数进行单因素及正交仿真实验,选取上述四个因素作为优化对象,将电流峰值时纵向磁感应强度最大、滞后时间最小和导体电阻最低作为优化目标,得到触头参数与磁场特性的回归方程。通过对电流峰值时触头间隙中心平面纵向磁感应强度、电流过零时磁场滞后时间以及导体电阻进行多目标优化分析,得到了最优的磁场特性。结果表明,当开槽长度为25mm、开槽角度为25°、工艺孔直径为15mm、铁心个数为14时,触头的磁场特性最好。The effective control of vacuum arc through the design of the contact structure is one of the important measures to improve the breaking performance of the vacuum switch.In order to improve the contact breaking performance of the vacuum interrupter,it is established a new type of 3D model of the vacuum interrupter with iron core through SolidWorks,and based on the three-dimensional finite element method,single factor and orthogonal simulation experiments are performed on the four parameters of the contact's slotting length,slotting angle,process hole diameter and the number of cores.The above 4 factors are selected as the optimization objects,then the maximum longitudinal magnetic induction intensity at the peak current,the minimum lag time and the minimum conductor resistance are the optimization objectives,and the regression equation of the contact parameters and the magnetic field characteristics is obtained.Through the multi-objective optimization analysis of the longitudinal magnetic inductance of the center plane of the contact gap when the current peaks,the magnetic field lag time when the current crosses zero,and the conductor resistance,the optimal magnetic field characteristics are obtained.The results show that when the slotting length is 25mm,the slotting angle is 25°,the process hole diameter is 15mm,and the number of iron cores is 14,the magnetic field characteristics of the contact are the best.

关 键 词：真空灭弧室 磁场 正交实验 优化设计 

分 类 号：TM561[电气工程—电器]