城市轨道交通直流牵引供电系统再生制动能量利用对钢轨电位的影响  

Influence of Regenerative Braking Energy Utilization of Urban Rail Transit DC Traction Power System on Rail Potential

作　　者：胡维锋 夏波 HU Weifeng;XIA Bo(不详;Chongqing Rail Transit Design and Research Institute Co.,Ltd.,401122,Chongqing,China)

机构地区：[1]重庆市轨道交通设计研究院有限公司,重庆401122 [2]重庆市轨道交通(集团)有限公司,重庆401122

出　　处：《城市轨道交通研究》2021年第10期176-181,共6页Urban Mass Transit

摘　　要：针对城市轨道交通直流牵引供电系统中杂散电流泄漏腐蚀和钢轨电位限制装置频繁动作的问题,对直流牵引供电系统再生制动能量利用给钢轨电位的影响进行了分析。建立了多列车动态运行过程中杂散电流和钢轨电位分布模型,仿真分析了杂散电流和钢轨电位的分布规律,并将其和列车功率的分布进行对比,得出了列车再生制动能量远距离利用量越大,钢轨电位增加越多。通过列车制动电流的利用量以及杂散电流最大值、钢轨电位最大值的对比分析,进一步验证了所提方法的正确性。Aiming at problems of the stray current leakage corrosion in urban rail transit DC traction power supply system and the frequent operation of rail potential limiting device in urban rail system,the influence of regenerative braking energy utilization on rail potential in DC traction power supply is analyzed.Through establishing a distribution model of stray current and rail potential during multi-train dynamic operatin,the distribution law of stray current and rail potential is simulated,analyzed and compare with the distribution of train power.It is concluded that the greater the distance utilization of regenerative braking energy,the greater the increase of rail potential.Finally,through a comparison between the application of train braking current,the maximum stray current and the maximum rail potential,the proposed method is further verified.

关 键 词：城市轨道交通 直流牵引供电系统 再生制动能量利用 钢轨电位 

分 类 号：U260.359[机械工程—车辆工程]