A Multi-Functional Modular Approach to Developing Microgrid Systems

Due to the impact of intermittency of renewable energy sources on electricity distribution networks, using energy storage systems (ESS) to stablize the grid are essential. Thus an intelligent system to actively control the distributed generations (DG), ESS and load are of vital significance for better integration of DGs to utility grid. This paper proposes a novel topology of microgrid system with modular design and wireless communication ability. Compared with the conventional microgrid system, it has fully modular design with the advantage of convenient manufacturing process, transport, installation, maintenance, capacity expansion, and upgrade. The specific hierarchical control and wireless communication can make the microgrid system smart in the power grid.