Distributed Adaptive Dynamic Event-Triggered Secondary Control for Islanded Microgrids With Disturbances

Abstract

This paper addresses the event-triggered secondary control problem for islanded microgrid with disturbances. Adaptive distributed control law is proposed for regulating voltage and frequency to desired values, while avoiding using global information. A novel distributed adaptive dynamic event-triggering mechanism (DETM) is proposed, the adaptive parameters are incorporated into the ETM design, such that not only strictly positive minimum event-triggering interval (METI) can be guaranteed, even in the presence of disturbances, but also global information is not required for implementation of the ETM. By means of auxiliary function, a novel Lyapunov function is constructed for stability analysis and ETM design. Compared with the existing results, with the proposed event-triggered control strategy, strictly positive METI and no dependence on global information can be achieved simultaneously. Moreover, the proposed adaptive event-triggered control strategy is robust to external disturbances. Finally, the effectiveness of the proposed method is verified by simulation results.