Nonfragile power and frequency control in islanded microgrids under abnormal asynchronous stochastic cyber attacks

Area of Science:

• Electrical Engineering
• Control Systems
• Cybersecurity

Background:

• Islanded microgrids require robust control for stable operation.
• Cyber attacks pose significant threats to microgrid information security and stability.
• Real power sharing and frequency regulation are critical for microgrid performance.

Purpose of the Study:

• To develop a distributed non-fragile controller for islanded microgrids facing asynchronous stochastic cyber attacks.
• To ensure reliable real power sharing and frequency regulation under cyber threats.
• To enhance the information security and operational stability of microgrids.

Main Methods:

• A distributed non-fragile controller based on nonperiodic sampled-data control is proposed.
• A delay-dependent two-sided looped-functional is constructed to incorporate delay and sampling information.
• An enhanced integral inequality technique and linear convex combination method are used for a sampling-based consensus protocol.

Main Results:

• The proposed control strategy effectively addresses real power sharing and frequency regulation challenges.
• The controller demonstrates robustness against abnormal asynchronous stochastic cyber attacks.
• The method enhances the security and stability of islanded microgrids.

Conclusions:

• The designed distributed control strategy is effective and feasible for islanded microgrids.
• The approach significantly improves microgrid resilience against sophisticated cyber attacks.
• This research contributes to secure and stable microgrid operation.