Off-board and on-board energy storage versus reversible substations in DC railway traction systems

Abstract

The present study describes and analyses a set of quasi-static railway power systems models and simulations considering on-board and off-board energy storage systems but also reversible and non-reversible substations and regenerative braking trains. The advantages and drawbacks of each technology are discussed. Then, several case studies considering different technological combinations are introduced and simulated, while the attained results are compared and analysed. In this regard, to cover all the casuistic, two simple explanatory cases are first exposed and then eight realistic scenarios are examined, which are simulated for a long time interval and also explained considering aggregated results.