Hierarchical and Distributed Optimal Control Strategy for Power and Power Quality of Microgrid Based on Finite-Time Consistency

Droop control is one of the main strategies islanded microgrid (MG), but droop cannot achieve reasonable power distribution microgrid, resulting in frequency and voltage deviation from rating value, which needs upper link to eliminate deviation. However, at present, most layered requires a centralized center, excessively relies on central controller (MGCC) real-time communication among distributed generation (DG), has certain limitations. To solve above problems, this paper proposes hierarchical quality optimization strategy based multi-agent finite time consistency algorithm (MA-FTCA). Firstly, first layer control, MA-FTCA applied introduce compensation stabilize system rated value. Secondly, third layer, adopted estimate total active reactive spare capacity system, realize output each DG according its proportion when load side changes. The proposed adopts completely method does not need center control. Finally, MATLAB/Simulink simulation platform used verify correctness effectiveness strategy.