Resilient control based frequency regulation scheme of isolated microgrids considering cyber attack and parameter uncertainties.

• A Cyber-resilience based frequency regulation study is proposed in this paper. • To make the test system more realistic, different uncertainties such as solar insolation, wind. • Speed pattern, and random load changes are considered. • An adaptive type-2 fuzzy logic control method is applied, whose performance is being Compared with type-1 fuzzy logic. • IT Achieves robust frequency regulation under load change, uncertainties and cyber-attacks. • The proposed model is also validated through real-time digital simulator opal-rt. Cyber-physical attacks and parameter uncertainties are becoming a compelling issue on load frequency control, directly affecting the resilience (i.e., reliability plus security) of the microgrid and multi-microgrid systems enabled by internet of things and the fifth generation communication system. A resilient system aims to endure and quickly restore a system's transients during extreme events. Therefore, it is critically important to have a resilient system to evade the total system failure or blackout in order to make them attack-resilient. With this objective, this paper presents a resilience-based frequency regulation scheme in a microgrid under different operating conditions, such as, step and random change in load and different wind speed patterns. Furthermore, a cyber-attack model is considered in the problem formulation to make the system robust against external attacks. To protect against the cyber-attack and parameter uncertainties in the system, different control schemes are employed, and their robustness characteristics are compared through various performance indices. Besides, the proposed control schemes are validated through a real-time software synchronisation environment, i.e., OPAL-RT. As noted, the proposed type-2 fuzzy proportional-integral-derivative based controller provides the most significant improvement in the dynamic performance for frequency regulation compared to that of the others under the cyber-attack and uncertainties. [ABSTRACT FROM AUTHOR]