Control Architecture of Resilient Interconnected Microgrids (RIMGs) for Railway Infrastructures

Abstract

This paper is aiming at the design of Resilient Interconnected Microgrids (RIMGs) for railway infrastructures to achieve economical and high performance energy supply. The proposed RIMGs include AC/DC Distributed Generation (DG) technologies as well as advanced energy storage, which is Flywheel Energy Storage Platform (FESP). FESP will provide dynamic energy storage to balance railway loads and generation capacities from RIMGs and the grid to achieve high performance and economical operation. Microgrid Supervisory Controller (MGSC) is proposed to effectively manage the power flow and to determine the most suitable energy sources in view of the railway demands within each MG and will be able to coordinate with other MGSCs for linked MGs, as well as to interact with the central controller. The proposed control architecture will enable the optimization of power supply cost to the train, as well as between MGs and the utility grid. The proposed solution has been demonstrated using simulation and real data, where the achieved results confirm the effectiveness of the proposed control architecture in terms of cost and performance.