摘要
大容量接地开关的接地动触头触指数量多,静触头结构复杂,通过峰值电流时,常规的解析法无法进行精确的计算。采用有限元分析方法,针对复杂的实例,建立了有限元模型,采用仿真的方法,分析每只触指上的电流分布,结合公式,计算出作用在触指和静触头联接处的电动力,以此作为触指弹簧接触压力的设计依据,并通过试验验证。
As the number of contact fingers of a high-capacity grounding switch is large,and the structure of static contact is complex,the conventional analytical method can not carry out accurate calculation in the case of the peak current.In this paper,the finite element method is used to establish the model for the complex case.The simulation method is used to analyze the current distribution on each finger.Combined with the formula,the electrodynamic force acting on the connection between the contact finger and the fixed contact is calculated,which is used as the design basis of the contact pressure of the touch finger spring,and verified by the test.
作者
王家鑫
WANG Jiaxing(The 4th Representative Office of Navy in Shanghai,Shanghai 201108,China)
出处
《电器与能效管理技术》
2020年第3期55-58,共4页
Electrical & Energy Management Technology
关键词
大容量接地开关
有限元
电动力
触指
峰值电流
high-capacity earth switch
finite element
electrodynamic force
contact finger
peak current
