Dynamic Simulation Of Double-pantograph-catenaries Coupling System

In recent years, the high-speed rail of China has developed rapidly. The speed of train has increased from 200km per hour to 350km above. The problem about stability of collecting electricity of pantograph-catenaries coupling system must be solved after the speed increases. The double-pantograph train not only improves the initial speed of train but also reduces the off-rate effectively. At the same time, the stability of the system can be enhanced. So the paper mainly researches the dynamical characteristics of double-pantograph-catenaries coupling system. The main work is as follows:1. The finite element model of double-pantograph-catenaries coupling system is built based on finite element analysis software ANSYS.2. The paper studies some parameters such as the span, the number of the suspended droppers, the relaxation, the velocity of locomotive, the mass of the head of pantograph, the rigidity of the head of pantograph, the damping of the head of pantograph, the dry friction, the tangency rigidity, the distance between leading and trailing pantograph and so on, which may affect the discipline of collecting electricity of double-pantograph-catenaries coupling system and the discipline of interaction between leading and trailing pantograph when the simple chain catenaries and elastic chain catenaries are selected respectively.3. The quality of collecting electricity is compared when different types of chains, finite elements and pantographs'mass models are selected.The optimal parameters are obtained which can improve the quality of collecting electricity of double-pantograph-catenaries coupling system according to analyzing and comparing. The results can provide preferences to construction of the new lines and transformation of the old lines.?...