Distributed Secondary Frequency and Voltage Regulation in Islanded Microgrids With Noise Using Intermittent Control

Abstract

This paper addresses the frequency and voltage regulation problem in islanded microgrids with random noise. Based on intermittent control strategy, a distributed secondary control structure is designed. The proposed control scheme is effective to achieve frequency and voltage restoration in mean square. In addition, the precise active power sharing among distributed generators is maintained. The stability of the proposed control method is analyzed by utilizing Lyapunov theory. A sufficient condition, which shows the relationship between control feedback gains, noise intensity, and communication network, is established. Finally, case studies are given to show the effectiveness of the proposed control method.