弓网系统接触电阻特性的研究  

Investigation on characteristics of the contact resistance of pantograph-catenary system

作　　者：朱宁俊 李春茂[1] 吴广宁[1] 高国强[1] 吴杰[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《铁道科学与工程学报》2015年第5期1185-1190,共6页Journal of Railway Science and Engineering

基　　金：国家自然科学基金资助项目(U1234202;51325704;51107104);国家重点基础研究发展计划(973计划)项目(2011CB11105-4)

摘　　要：弓网接触电阻是衡量弓网接触性能的重要指标,而牵引电流、接触压力和滑动速度是影响弓网接触电阻的重要因素。通过测试不同牵引电流条件下的弓网静、动态接触电阻的试验,阐明弓网静、动态接触电阻随牵引电流变化的趋势,以及接触压力与滑动速度对弓网动态接触电阻的影响效果,并分析这3个影响因素的作用机制。研究结果表明:弓网静态和动态接触电阻都随电流的增大而减小,且下降趋势逐渐趋于平缓;相同牵引电流条件下,接触压力越大,则动态接触电阻越小,滑动速度越大,则动态接触电阻越大;滑动速度越大,动态接触电阻随牵引电流增大而减小的下降趋势越陡峭。The contact resistance between pantograph and catenary is an important indicator of contact perform-ance of pantograph -catenary system.The traction current,contact pressure and sliding speed are important fac-tors affecting contact resistance between pantograph and catenary.By the trial of observing static and dynamic contact resistance of pantograph -catenary system on conditions of different current,the variation tendency of contact resistance with traction current,the effects of contact pressure and sliding speed on dynamic contact re-sistance were expounded,and the three factors’effecting mechanisms were analyzed.Studies show that：static and dynamic contact resistance both decrease with increasing current,meanwhile the rate of decline tend to smooth.In the same traction current,greater contact pressure leads to the smaller dynamic contact resistance and faster speed would result in the greater dynamic contact resistance.Besides,faster speed would lead to the steep-er tendency of the dynamic contact resistance with the increase of current.

关 键 词：弓网系统 接触电阻 牵引电流 接触压力 滑动速度 

分 类 号：TM922.3[电气工程—电力电子与电力传动] U225.3[交通运输工程—道路与铁道工程]