接触线波磨损伤下刚性接触网结构参数对弓网动力学性能影响研究

Study on the Influence of Rigid Catenary Structural Parameters on Pantograph-Catenary Dynamics Performance under Contact Wire Corrugation Wear

摘要: 随着城市轨道交通系统的不断发展，刚性接触网作为电力传输系统的重要组成部分，其运行稳定性直接影响列车的动力系统和安全性。接触网波磨现象对弓网系统的受流质量和列车运行稳定性产生了重要影响。针对这一问题，本研究基于考虑波磨的弓网耦合动力学模型，探讨了刚性接触网的关键结构参数(跨距、抗弯刚度和线密度)对弓网系统动力学性能的影响。研究结果表明，跨距、抗弯刚度和线密度的变化对弓网系统的受流质量具有显著影响，接触线跨距为8 m时，弓网间的受流质量最佳，随着跨距增大，波磨对弓网受流质量的影响逐渐加剧；接触线线密度为7 kg/m时，弓网的动态受流质量较好，随着线密度增大，波磨对弓网受流质量的影响愈加显著；接触线抗弯刚度增大时，波磨对弓网受流质量的影响呈减小趋势。本研究为优化刚性接触网设计及提高弓网系统的运行性能提供了理论依据。

Abstract: With the continuous development of urban rail transit systems, the rigid catenary, as a critical component of the power transmission system, has a direct impact on the train’s propulsion system and operational safety. The phenomenon of contact wire corrugation significantly influences the current collection quality of the pantograph-catenary system and the stability of train operation. To address this issue, this study investigates the effects of key structural parameters of the rigid catenary (span length, bending stiffness, and linear density) on the dynamic performance of the pantograph-catenary system, based on a coupled dynamics model that accounts for corrugation. The findings reveal that variations in span length, bending stiffness, and linear density have a notable impact on current collection quality. When the contact wire span length is 8 m, the current collection quality between the pantograph and catenary is optimal. As the span length increases, the influence of corrugation on current collection quality becomes more pronounced. At a contact wire linear density of 7 kg/m, the dynamic current collection performance is favorable. However, as linear density increases, the adverse effects of corrugation intensify. An increase in the contact wire’s bending stiffness mitigates the negative impact of corrugation on current collection quality. This study provides a theoretical foundation for optimizing rigid catenary design and enhancing the operational performance of pantograph-catenary systems.