Modelling, simulation, and verification for detailed short-circuit analysis of a 1 x 25 kV railway traction system

This study presents a modelling and simulation method for the analysis of short-circuits in 1 x 25 kV railway traction systems (RTSs). First, the authors developed models of major components and a full-scale model of a RTS. The component models developed in this study include a specific Le Blanc traction transformer and an overhead catenary system. The models are represented using corresponding coupling-free equivalent circuits to facilitate implementation using software packages MATLAB((R))/Simulink((R)). The short-circuit fault simulation of a RTS was conducted on a personal computer operating with MS Windows 7((R)). Field testing data was used to verify the simulation results. The modelling and simulation technology developed in this study provide a valuable reference for power engineers involved in the planning, design, and operation of a railway traction network.