A Review on Hierarchical Control Strategy in Microgrid

Abstract

With the wide application of microgrids technology, it is necessary to find an advanced control strategy of microgrids. It is crucial for a microgrids system to applied a proper control method. To meet the requirements of accurate distribution of voltage and power, and to make the micro-grid system stable and economical, many kinds of literature have studied the hierarchical control structure of microgrids. The hierarchical control structure is generally composed of primary, secondary, and tertiary levels. There is also a two-layer control structure. In this paper, the research status of hierarchical control in microgrids is reviewed. The structure and function of each control layer are summarized. And the development trend of hierarchical control of microgrids is prospected.