摘要
为了通过高速铁路线路整体接触导线抬升量数据研究弓网系统动态性能,文章建立了4种典型高铁线路的接触网模型和3种高速受电弓的三自由度归算参数模型,并利用罚函数法模拟弓网关系,建立弓网耦合模型,仿真计算接触线定位器抬升量在不同运行速度、不同运行方向下的变化。随后,文章提出一种基于随机森林算法的定位点智能识别分类方法,将接触线拉出值拐点作为定位点,结合现有的接触网几何参数检测数据,采用随机森林算法,将投票结果作为最终定位点判断标准,建立分类模型,优化定位点数据,并对接触线抬升量动态静态实测数据进行预处理、定位点优化、数据空间同步后,得到连续的接触线抬升量。研究结果表明,在速度170~350 km/h内4种典型线路定位器最大抬升量随列车运行速度的提升而增大;在300 km/h开口运行条件下,SSS400+受电弓的定位器动态最大抬升量小于法维莱CX-018与DSA380受电弓,最大抬升量在61.17~81.44 mm;在接触网参数确定的前提下,受电弓闭口方向运行时接触线平均抬升量要高于开口方向运行。
This paper aims to study the dynamic behaviors of the pantograph-catenary system for high-speed railway lines,focusing on the overall uplift data of contact wires.To achieve this,models of overhead contact systems(OCS)were established for four typical high-speed railway systems,along with three-degree-of-freedom models with reduction parameters for three types of high-speed pantographs.Moreover,the penalty function method was introduced to simulate pantograph-catenary interactions,leading to the establishment of a pantograph-catenary coupling model that was then utilized to simulate uplift changes of contact wire steady arms under different operating speeds and directions.Subsequently,an intelligent locating point recognition and classification method was proposed,based on the random forest algorithm.By using the inflection points of contact wire staggers as locating points,and leveraging existing detection data for the geometric parameters of the overhead contact systems,the voting results from the random forest algorithm were considered standards for determining the final locating points.Furthermore,a classification model was established to optimize the locating point data.After preprocessing the data obtained from the dynamic and static measurements of contact wire uplift,optimizing the locating points,and performing data spatial synchronization,continuous contact wire uplifts were ultimately generated.The research results indicate that the maximum uplift of the four typical steady arms increases with the increase in train operating speeds within the range of 170 km/h to 350 km/h.Under the conditions of 300 km/h and pantograph opening operation,the dynamic maximum uplift of steady arms for SSS400+pantographs is smaller than that for the Faiveley CX-018 and DSA380 pantographs.The maximum uplifts ranged from 61.17 mm to 81.44 mm.Under specific OCS parameters,the average uplift of the contact wires during operation in the pantograph closing direction is higher than that during operation in the opening direction.
作者
唐阳
TANG Yang(China Railway Construction Electrification Bureau Group Southern Engineering Co.,Ltd.,Wuhan,Hubei 430000,China)
出处
《机车电传动》
2024年第4期171-180,共10页
Electric Drive for Locomotives
基金
国家铁路集团有限公司科技研究开发计划项目(N2023G057)
中国铁建股份重大课题(2021-A01)。
关键词
高速铁路
接触网
导线抬升
数据采集
弓网耦合
高速列车
有限元法
high-speed railway
overhead contact system(OCS)
contact wire uplift
data collection
pantograph-catenary coupling
high-speed train
finite element method
