Active and Reactive Power Sharing under Time Delays in Autonomous Microgrid Using Consensus-Based Distributed Control

Consensus algorithms are widely applied in distributed control of microgrids. With distributed control, the performance of a microgrid is significantly relevant to the time delays of the communication network. This paper mainly focuses on the time delays in the consensus-based control in microgrids. The influence of time delays is analyzed and the stability margin of the time delays is given. It is proved that the stability of the microgrid depends only on the local processing time delays of DGs, while the communication time delays between different DGs would only influence the convergence speed. Moreover, an AC microgrid with four DGs and some loads are implemented and the stability margin of time delays is verified by MATLAB/Simulink simulation results.