Objective In order to reduce abnormal wear and pantograph-catenary separation caused by excessive or insufficient contact pressure, it is necessary to study the influence of various pantograph-catenary parameters on current collection quality and propose corresponding optimization measures when the train operates at a speed of 200 km/h.

Method A rigid pantograph-catenary coupling model is established using finite element simulation software such as Hypermesh and Adams, and the correctness of the proposed model is verified according to relevant standards. At a train operating speed of 200 km/h, the effects of pantograph, contact wire parameters, and wheel-rail excitation parameters on the current collection quality are analyzed. Using sensitivity analysis, the influence of contact span, busbar clamping spring stiffness, and pantograph head spring stiffness on the mean value and standard deviation of pantograph-catenary contact pressure is examined, and optimized parameters for the rigid pantograph-catenary system are proposed.

Result & Conclusion  Reducing the contact span and busbar clamping spring stiffness, while increasing the pantograph head spring stiffness, can decrease the pantograph-catenary separation rate and reduce the probability of arcing. Increasing the contact span and busbar clamping spring stiffness, while decreasing the pantograph head spring stiffness, can reduce the mean and maximum values of pantograph-catenary contact pressure, thereby minimizing carbon strip wear. Excessive amplitude and frequency of wheel-rail excitation may lead to drastic changes in the contact wire uplift, increasing the maximum contact pressure and its standard deviation, which adversely affects current collection. The pantograph head spring stiffness has the greatest impact on the mean value and standard deviation of contact pressure, while the busbar spring stiffness has the least.