Design of the power feeding system for electrified railways case study: Panadura -Veyangoda railway sector

Abstract

In railway systems, electrical traction is more efficient, comfortable and more economical than diesel traction. Since the railway transportation is a major public transportation means in Sri Lanka, having an efficient and reliable electrified railway transportation system will increase the capacity of railway transportation and attract more passengers daily receiving the service. This research is based on the proposed Panadura – Veyangoda railway electrification project. It is of vital importance to identify the required maximum power of the predicted system at the peak hours prior to designing the traction system. MATLAB Simulink software has been applied for the modelling the speed, power and distance of the train movement between stations with respect to time. Using the simulation results obtained from MATLAB Simulink model, a load flow study for the total train movements between Panadura station to Veyangoda station at peak hour is carried out in DIgSILENT Power Factory software to obtain the maximum power required for each traction substation. Finally, the traction substation components are sized and layout of the system and earth grid arrangement is presented for Ratmalana traction substation as a case in point. This software models can be applied for any other railway electrification systems to be predicted by modifying and changing their parameters accordingly.