油阻尼断路器触头系统电动斥力仿真及优化

doi:10.16182/j.issn1004731x.joss.201806022

系统仿真学报 ›› 2018, Vol. 30 ›› Issue (6): 2175-2182.doi: 10.16182/j.issn1004731x.joss.201806022

油阻尼断路器触头系统电动斥力仿真及优化

乔延华^{1, 2}, 苏秀苹¹, 董天颖¹

1. 河北工业大学电器研究所,天津 300130;
2. 天津天狮学院信息与自动化学院,天津 301700

收稿日期:2016-08-01 修回日期:2016-11-28 出版日期:2018-06-08 发布日期:2018-06-14
作者简介:乔延华(1982-),女,天津,博士,讲师,研究方向为电器可靠性及现代设计技术;苏秀苹(通讯作者1966-),女,天津,博士,教授,研究方向为电器可靠性及现代设计技术。
基金资助:
河北省自然科学基金(E2016202284)

Simulation and Optimization on Electrodynamic Repulsion Force of Contact System in Circuit Breaker with Oil Dashpot

Qiao Yanhua^{1, 2}, Su Xiuping¹, Dong Tianying¹

1. Electrical Research Institute of Hebei University of Technology, Tianjin 300130, China;
2. Tianjin Tianshi College, Department of Information and Automation, Tianjin 301700, China

Received:2016-08-01 Revised:2016-11-28 Online:2018-06-08 Published:2018-06-14

摘要/Abstract

摘要： 在ANSYS中建立了油阻尼断路器触头系统的三维有限元模型,对其触头间的霍尔姆力和导体臂之间的洛伦兹力进行了仿真分析,得到其电流密度分布,磁感应强度分布,触头和触头臂的受力情况。通过理论值与仿真结果的对比验证了利用ANSYS求解电动斥力的可行性,并分析了影响霍尔姆力的主要因素,得到了霍尔姆力随表面接触系数、接触压力和材料硬度变化的规律。利用ANSYS对触头系统的结构进行了优化,可以在短路条件下得到更大的电动斥力,辅助油阻尼断路器的机构进行分断。

关键词: 油阻尼断路器, 电-磁耦合, 霍尔姆力, 洛伦兹力, 优化设计

Abstract: A 3D finite element model for contact system of circuit breaker with oil dashpot is established. Two electrodynamic repulsion forces, the Holm force between contacts and the Lorentz force between the conductor arms, are analyzed. The current density distribution, magnetic intensity distribution and the forces of the contact and contact arm are obtained. Compared with the theoretical value, it shows that it is feasible to use this method to solve electrodynamic repulsion force. The main factors that influence the Holm force are analyzed. The simulation results show the changes of Holm force with different surface contact coefficient, contact pressure and material hardness. The structure of the contact system is optimized through ANSYS. More electrodynamic repulsion force can be got in short-circuit condition, thus assisting circuit breaker with oil dashpot for breaking.

Key words: circuit breaker with oil dashpot, electro-magnetic coupling, Holm force, Lorentz force, optimal design

中图分类号:

TP391.9

乔延华, 苏秀苹, 董天颖. 油阻尼断路器触头系统电动斥力仿真及优化[J]. 系统仿真学报, 2018, 30(6): 2175-2182.

Qiao Yanhua, Su Xiuping, Dong Tianying. Simulation and Optimization on Electrodynamic Repulsion Force of Contact System in Circuit Breaker with Oil Dashpot[J]. Journal of System Simulation, 2018, 30(6): 2175-2182.

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油阻尼断路器触头系统电动斥力仿真及优化

Simulation and Optimization on Electrodynamic Repulsion Force of Contact System in Circuit Breaker with Oil Dashpot

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