Sun, Yue, Zhang, Chenghui, Zhao, Daduan, Cao, Xiangyang, Sun, Bo, Li, Ke, and Li, Yan
For battery energy storage systems (BESSs) in islanded AC microgrids, distributed control strategy provides an effective and flexible means to implement frequency restoration, proportional active power sharing and state of charge (SoC) balancing. Nevertheless, the distributed control system is susceptible to potential cyber attacks that break the synchronization and stability. To mitigate those effects, this paper presents an attack-resilient distributed adaptive secondary control for heterogeneous BESSs in islanded AC microgrids. The proposed control method can guarantee the consensuses on BESSs' frequency, active power and SoC simultaneously in the presence of actuator attacks, which only uses the local and neighbor's information. Specifically, the resilience is improved significantly by introducing the dynamic control gains with adaptive updating laws. Furthermore, the stability analysis is applied to assure the robustness. Lastly, the effectiveness of the above discussed conclusions is validated and compared by case studies on an islanded AC microgrid testing system. • The secondary control of heterogeneous BESSs is formulated as distributed consensus tracking problems. • Cyber attack is considered in the secondary control and its adverse effects is mitigated. • An attack-resilience distributed adaptive control protocol is designed to achieve secondary control of BESSs. • The stability of the control is proved rigorously in theory. • Simulations validate effectiveness of the control under cyber attacks in different scenarios. [ABSTRACT FROM AUTHOR]