An Observer-based Event-Triggered Cooperative Secondary Control of Microgrids under Switching Topologies

This paper presents an innovative secondary control scheme that takes into account the switching topology of the communication network. Based on the absolute values of distributed energy output variables, we propose an observer-based event-triggered cooperative secondary control scheme to regulate voltage and frequency simultaneously in stand-alone microgrids (MGs). In the propose scheme, we provide sufficient conditions to ensure the boundedness of formation errors, and also, the Zeno behavior is excluded by calculating a lower bound for the sampling intervals. Simulation results are provided to validate the proficiency and efficiency of the proposed control scheme subject to switching topologies. Furthermore, we undertake a comparative analysis between our proposed method and a contemporaneously developed control approach.