A Novel Frequency Control in Microgrid for the Management of Distributed Energy Storage Systems

Abstract

This paper proposes a novel frequency control method for the management of distributed energy storage resources in AC microgrid. Distributed autonomous controls by the individual prosumers perform an efficient coordination of SOCs which are automatically controlled to a same value that indicates the total SOC in the microgrid. The coordination is realized by the proposed control law that allows frequency deviation in a specified bandwidth. The proposed method has been developed in order for the microgrid operation by SSI, the single-phase synchronous inverters developed by the authors, while useful for general AC microgrid to increase the resilience of power supply.