摘要
针对重联动车组运行存在的前、后弓频繁拉弧现象,建立考虑双弓间距的双弓网H abedank电弧数学模型。首先,以北京一天津电气化铁路重联动车组为例,建立双弓网耦合系统动力学模型。其次,以动力学模型仿真计算结果中接触压力为零作为离线边界条件,确立双弓间距与弓网最大离线距离之间函数关系,建立双弓网Habedank电弧数学模型。最后,在MATLAB/Simulink软件中进行仿真分析,结果表明:随着双弓间距增大,前弓拉弧时的电弧燃弧、熄弧尖峰电压及电流均增大,而后弓拉弧时不随双弓间距增大而增大。此外,同一双弓间距下,与前弓拉弧相比,后弓拉弧时的电弧电压、电流更大且易发生拉弧。该模型建立可从动力学和概率统计角度为实际动车组双弓网拉弧模型的构建提供一定的理论支撑和工程参考。
In view of the frequent arcing phenomenon of the front and back pantograph in the operation of the reconnected EMUs(electric multiple units),a mathematical model of the double pantograph-catenary Habedank arc considering the double pantographs interval is constructed.First,the reconnected EMUs of Beijing-Tianjin electrified railway is taken as an example,the dynamic model of double pantograph-catenary coupling system is set up.Secondly,the functional relationship between the double pantographs interval and the maximum offline interval of the panto-graph-catenary is determined by taking the zero contact pressure as the off-line boundary condition in the simulation results of dynamic model,and then Habedank arc mathematical model of the double pantograph-catenary is set up.Finally,the simulation analysis is carried out in MATLAB/Sirnulink software.The results show that with the increase of double pantographs interval,the peak voltage and current of arcing and extinction are all not increased in the back pantograph arcing but in the front pantograph arcing.In addition,under the same pantographs intervals,compared with the pantograph arcing,the arc voltage and cuiTent of back pantograph arcing,compared with the front pantograph arcing,are larger and easy to occur.The setup of the model can provide theoretical support and engineering reference for the double pantograph-catenary arcing model of the actual EMU in terms of dynamics and probability statistics.
作者
王英
曹丽
陈小强
沈彦龙
WANG Ying;CAO Li;CHEN Xiaoqiang;SHEN Yanlong(School of Automation&Electrical Engineering,Lanzhou Jiaotong University,Lanzhou 730070,China;Electrical Engineering Gansu Rail Transit Electrical Automation Engineering Laboratory,Lanzhou 730070,China)
出处
《高压电器》
CAS
CSCD
北大核心
2021年第11期18-26,共9页
High Voltage Apparatus
基金
中国铁路总公司科技研究开发计划重点课题(2017J012-A)
国家自然科学基金(51767013,51867012)
甘肃省教育厅自然科学基金(2017A-020)
甘肃省科技厅自然科学基金(18JR3RA111)
甘肃省科技厅自然科学重点基金项目(21JR7RA280)。
关键词
重联动车组
弓网耦合系统
接触压力
双弓间距
双弓网拉弧
reconnected EMUs
pantograph-catenary coupling system
contact force
double pantographs interval
arcing of double pantograph-catenary
