典型气候环境对弓网动态耦合特性的影响研究

Research on the Influence of Typical Climate Environment on the Dynamic Coupling Characteristics of Pantograph and Catenary System

研究目的:针对复杂的气候环境对电气化铁路受电弓-接触网系统的影响展开讨论,重点围绕环境温度、横风和覆冰条件三个方面对弓网系统动态耦合性能影响的研究现状和进展进行阐述,并针对目前的研究,展望了关于复杂气候条件下弓网关系在后续应该重点关注的研究方向和发展趋势。研究结论:(1)结合弓网受流过程的动力学特性,丰富环境与电弧温度场的传递特性,加深横风、覆冰条件下接触网振动特性研究;(2)建立多物理场耦合的弓网模型与仿真,充分考虑温度、机械系统、流体和电流等多场耦合效应;(3)改进现有的检测手段与检测算法,及时预测和识别环境因素对弓网系统造成的故障;(4)开发抑制横风引起接触网舞动的装置,研究接触网防冰和除冰技术,减小横风、覆冰对弓网动态受流性能的影响;(5)本研究成果可为弓网关系研究方向提供参考。

Research purposes:This paper discusses the impact of the complex climate environment on the pantograph catenary system of the electrified railway,focusing on the research status and progress of the influence of environmental temperature,crosswind and icing conditions on the dynamic coupling characteristics of the pantograph catenary system.In view of the current research,the research direction and development trend of relationship between pantograph and catenary under complex climate conditions are discussed.Research conclusions:(1)Combining the dynamic characteristics of the current collection process of the pantograph and catenary,enriching the transmission characteristics of the environment and arc temperature field in the pantograph and catenary system,and deepening the research on the vibration characteristics of the catenary under crosswind and icing conditions.(2)Establish a multi physical field coupled modeling and simulation of the pantograph-catenary system,taking into account the intricate interactions of temperature,mechanical system,fluid,and current.(3)Improve existing detection methods and algorithms,and timely predict and identify faults caused by environmental factors on the pantograph catenary system.(4)Develop devices to suppress contact line galloping caused by crosswind,conduct research on anti-icing and de-icing technologies for the contact line,and reduce the impact of crosswind and icing on the dynamic current collection performance of the pantograph and catenary.(5)The research results can provide reference for the research direction of pantograph catenary relationship.