Resilient and Cybersecure Distributed Control of Inverter-Based Islanded Microgrids

Abstract

This article addresses the security of distributed secondary control of inverter-based distributed energy resources (DERs) in microgrids. The proposed cybersecure scheme utilizes the weighted mean subsequence reduced algorithm at each DER to discard the corrupted information received from neighboring DERs. This algorithm requires the connectivity of underlying communication graph to be above a specific threshold. To cope with this requirement, a methodology is proposed such that each DER is able to virtually change the quality of communication links connected to that DER to enhance the connectivity of communication graph. Two islanded microgrid test systems are simulated to validate the effectiveness of proposed cybersecure secondary control.