Abstract：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.
董华军, 温超阳, 孙鹏, 刘林林, 郭方准. 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[J]. 电工技术学报, 2022, 37(21): 5598-5606.
Dong Huajun, Wen Chaoyang, Sun Peng, Liu Linlin, Guo Fangzhun. Simulation and Optimization of the Contact Magnetic Field of a New Type of Vacuum Interrupter Based on Orthogonal Experiment. Transactions of China Electrotechnical Society, 2022, 37(21): 5598-5606.
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2022, Vol. 37 
