Optimal Control and Management of Distributed Generation Units in an Islanded MicroGrid

This paper is concerned with small signal model and the generation control in small islanded MicroGrids consisting of inverter interfaced distributed generation (DG) units. First, the active management strategy of the distribution system is introduced and then its components and corresponding control schemes for active and reactive power control are discussed and implemented. The paper also presents an optimal load sharing strategy between several generation units in a stand-alone MicroGrid in order to have minimum power loss in the system. Simulation results are shown for a typical MicroGrid consists of two DG units. It has been shown that the proposed method can meet the requirement of the system and can operate the system optimally and reliably such that it guarantees continuity of power to loads in stand-alone mode of MicroGrid.