Overhead power systems for interoperability of high-speed trains
To enable high-speed train operation within Europe (interoperability), there are high demands on safe and uninterrupted traffic. Interoperability implies that the same pantograph will operate on both AC and DC lines, with different designs of overhead power systems. Today, pantographs designed for these lines are characterised by vast differences in mass, stiffness and damping. To enable better performance, future pantographs will probably be equipped with active components to be able to control the contact force. There will also be different demands on high-speed lines, upgraded lines and connecting lines. The mean contact force, standard deviation and amount of contact loss depend on several factors, such as the design of the overhead power system and pantograph, the train speed and the aerodynamic conditions. As a consequence, it will be important to be able to evaluate and recommend actions to be taken in order to offer a secure and uninterrupted operation on a specific track. One of the demands on the certified lines for high speed is that they need to be compatible with the power systems of the trains. To facilitate the handling of these complex problems, the aim of this project is to continue the development of the simulation tool that is used today at Banverket, so that it also includes the possibilities to evaluate these aspects connected to interoperability. Also, this implies a need for enhanced knowledge and understanding of effects caused by different pantograph designs.