低压空气开关灭弧室不同电弧形态下的磁场研究  

Magnetic Field Analysis of Low Voltage Air Switch Arc Chamber under Different Arc Shapes

作　　者：刘婉莹[1] 张国钢[1] 吴越[1] 耿英三[1] 

机构地区：[1]西安交通大学电力设备电气绝缘国家重点实验室,陕西西安710049

出　　处：《电器与能效管理技术》2015年第8期22-25,共4页Electrical & Energy Management Technology

基　　金：国家自然科学基金项目(51477129);中央高校基本科研业务费专项资金资助(XJJ2011019)

摘　　要：使用有限元软件对低压空气开关灭弧室的电弧磁场进行分析,对灭弧室系统在触头打开状态下进行仿真建模,围绕电弧与栅片的相对位置,即电弧偏离栅片和偏向栅片的情况,对比分析了在电流密度分布相同,电弧形状不同的情况下灭弧室周围的磁场分布、电弧中心的磁感应强度以及电弧所受磁吹力的大小。获得了电弧磁场与电弧形态相互作用的规律,为研究低压开关电器灭弧室的设计提供了参考。This paper established a simulation model of low voltage air switch arc chamber on the contacts opened state to analyze the magnetic field with finite element software.According to the relative position of the arc and the splitters,two different arc models are included,namely arc off the splitter and arc near the splitter.With equivalent current density and diverse arc shapes,the magnetic field distribution was analyzed around the chamber.Especially,the magnetic flux density of the arc center and the magnetic blow force acting on the arc were compared.Researching on the relative effect of the arc and the splitters,this paper provides reference for the design of low voltage air switch chamber.

关 键 词：低压空气开关 电弧磁场 磁通密度 磁吹力 

分 类 号：TM501.2[电气工程—电器]