Distributed Round-Robin Protocol-Based Secondary Control for ESSs Under FDI Attacks

This article focuses on the distributed secondary control problem for energy storage systems (ESSs) under false data injection (FDI) attacks. To solve the problem, a $\boldsymbol{k}$-step attack estimation method is first proposed to estimate the unknown attacks and the estimation error converges to zero as the number of estimation steps increases to infinity. Next, we design a Round-Robin (RR) communication protocol to alleviate the communication burden among ESSs. Based on the estimator state and the RR communication protocol, a distributed secondary security controller is proposed by introducing a time-varying gain for each ESS. Different from the existing secondary control results on ESSs, the developed result can achieve state of charge (SoC) balancing and proportional power-sharing with restricted communication under FDI attacks. It is shown that the SoC balancing and proportional power-sharing objectives can be achieved under the developed methods. Finally, a real-time experiment is introduced to show the effectiveness of the developed methods.