基于磁流体动力学模型的弓网电弧温度场仿真  

Temperature Field Simulation of Pantograph-catenary Arc Based on MHD Model

作　　者：郝长金 尹小兵[1] 古圳[1] 朱光亚[1] 高波[1] 吴广宁[1] 

机构地区：[1]西南交通大学电气工程学院,成都610031

出　　处：《高压电器》2016年第7期123-129,共7页High Voltage Apparatus

基　　金：国家自然科学基金项目(U1234202;51325704)~~

摘　　要：笔者针对弓网电弧产生的瞬时高温严重烧蚀受电弓滑板和接触网导线的问题展开研究。以磁流体动力学(MHD)理论为基础,考虑电弧的基本物理特性及电磁效应、热效应和辐射效应,建立了静态弓网电弧二维磁流体动力学模型,仿真计算了电弧的温度场分布,得到了电弧弧柱和两电极内部的温度分布特性。仿真结果表明,弧柱中心区域温度最高,并逐渐向外衰减;滑板表面温度高于导线表面,两电极表面温度低于弧柱温度;受电弓滑板表面的温度随着滑板材料热导率的增大而降低;电弧区域、滑板和导线上的温度随电流的增加而增大,而两电极之间的电位差基本保持不变。When pantograph-catenary arc occurs, the transient high temperature will seriously erode the pantograph and catenary. Based on MHD theories, this paper takes into account the basic physical properties of arc, the electromagnetic effect, heating effect and radiation phenomena, and builds a geometry model of static pantograph-catenary arc to simulate the temperature field distribution.The results show that：the surface temperature of pantograph slider is higher than that of the catenary wire; the temperatures of the two electrodes are lower than that of the arc column; the temperatures of arc zone, slider and conductor increase with the increase of the electric current, while the voltage between two electrodes almostremains unchanged.

关 键 词：MHD模型 弓网电弧 温度场 

分 类 号：U225[交通运输工程—道路与铁道工程] U264.34[机械工程—车辆工程]