利用半实物半虚拟试验方法研究接触网参数对弓网接触力的影响

在对弓网关系研究方法分析比较的基础上 ,采用了最新、最接近实际物理状态的半实物半虚拟混合模拟试验方法。介绍了混合模拟的基本原理及试验流程 ,进一步推导了接触网动力学微分方程 ,并以国内简单链形悬挂接触网和德国DSA3 80高速受电弓为研究对象 ,分析研究了接触网参数 (跨距、结构高度、接触线张力、承力索张力、接触线线密度、承力索线密度、接触线弛度、接触线表面不平顺等 )对弓网接触力的影响 ,以“接触力最小值”最大、“接触力最大值”最小及“均方根值”最小作为受流质量的评定标准 ,得出了具有一定实用价值的结论

Study on Influence of Catenary Parameters on Contact Force by Method of Hybrid Simulation

On the basis of analyzing and comparing the methods of studying the pantograph-catenary relationship, the hybrid simulation method is adopted, which is most updated and best approaches the actual physical status. The principle theory and the testing flow of the hybrid simulation are introduced. The dynamical differential equation of the catenary is derived. The simple chain suspention catenary in China and the DSA380 high-speed pantograph in Germany are taken as the objects of the study. The parameters of the catenary, such as the span, the structural height, the tension of the overhead line, the tension of the messenger line, the linear density of the overhead lines, the linear density of the messenger lines, the sag of the overhead line, the surface irregularity of the overhead line and so on, are studied in respect of their influence on the characteristics of the current collector. The maximum value of the minimum contact force, the minimum value of the maximum cantact force and the minimum value of the root-meam-square are set as the standard for evaluating the quality of current collection. Conclusions of certain practical significance are drawn.