Distributed adaptive secondary control of AC microgrid under false data injection attack✩

This paper focuses on the issue of false data injection attack (FDIA) of controllers in AC microgrid, and proposes a distributed adaptive secondary controller for AC microgrid to achieve the control objective of restoring the rated frequency and voltage when the controllers are subjected to FDIA. Firstly, this paper analyzes the impact of constant FDIA on AC microgrid. Then, a distributed adaptive secondary controller is designed based on the adaptive compensation mechanism to compensate for the attack and eliminate the adverse effects of FDIA on the system. Further, the stability analysis for the designed secondary controller using Lyapunov theory proves that the control system is global asymptotically stable. Finally, the effectiveness of the proposed distributed adaptive secondary control method is demonstrated both in the islanded AC microgrid model built by MATLAB/Simulink and in the StarSim hardware-in-the-loop simulation.