Research on Pantograph-Catenary Dynamics Characteristics in Mixed Double Pantographs Formation of Different Types
Journal Title: Urban Mass Transit - Year 2025, Vol 28, Issue 4
Abstract
[Objective] Due to the influence of the leading pantograph in double pantographs operation, the current collection performance of the trailing pantograph often degrades. It is necessary to study the dynamic interaction of the PC (pantograph-catenary) system when double pantographs are mixed. [Method] A finite element model of catenary and a lumped mass model of pantograph are established. Firstly, during operation the effect of the pantograph′s parameters on the average uplift of the contact wires at the rear locations is analyzed; then based on this, the effect of the leading pantograph′s parameters on the trailing pantograph dynamics is analyzed; and finally it is extended to the analysis of the PC dynamics performance in the case of mixed double pantographs. [Result & Conclusion] The uplift amplitude caused by different pantographs is varied. The better the performance of the pantograph, the lower the uplift amplitude. By comparing the 9 parameters of the pantograph lumped mass model, it is found that the damping between the lower frame and the bottom frame c3 has a significant influence on the uplift amplitude. Therefore, adjusting the value of c3 can effectively improve the current collection quality of pantograph and thus reduce the fluctuation amplitude of contact line uplift. When two different pantographs are in mixed operation, if the dynamic performance of the leading pantograph is better, the current collection quality of trailing pantograph will also be better; if the dynamic performance of leading pantograph is poor, the fluctuation amplitude of the average contact line uplift amount at each position behind the leading pantograph can be reduced by adjusting the value of c3, thereby optimizing dynamics performance of the trailing pantograph.
Authors and Affiliations
Wenwei LU, Ning ZHOU, Hongming CHEN, Xuyang WANG, Yao CHENG, Weihua ZHANG
Performance Analysis and Application Prospects of New Silicon-Carbon Anode Materials in Rail Transit Vehicle Soft-pack Batteries
[Objective] The large-scale application of silicon-containing anode materials in soft-pack battery for urban rail transit vehicles faces many challenges, primarily the failure of electrical performance due to the volum...
New Network Architecture for Urban Rail Transit Video Surveillance System Based on SDN and NFV Technologies
Objective The video surveillance system of Shanghai urban rail transit faces challenges such as insufficient flexibility, poor scalability, and complex operation and maintenance. In response, a new network architecture f...
Fire Smoke Control and Personnel Safety Evacuation under Dual-train Tracking Mode in Urban Rail Transit Ultra-long Tunnel
Objective In urban rail transit, train departure intervals are generally short, leading to situations where two trains travel in the same direction within ultra-long tunnels. In the event of a fire, this scenario can res...
Discussion on the Function and Interface Schemes for Interlocking System of Multi-level Railway Network Junction Station
Objective In the multi-level road network, junction stations of lines with different signal systems face quite a number of challenges. In order to meet the new demands of multi-network interoperation, it is necessary to...
Discrete RBF Adaptive Robust Sliding Mode Network Control Method for High-speed Trains
Objective To achieve reliable control of traction and braking key systems in trains while suppressing the impact of communication delay on train control, a discrete RBF (radial basis function) adaptive robust sliding mod...