Dynamic Event-Triggered Output Feedback Control for Load Frequency Control in Power Systems With Multiple Cyber Attacks

• Published in: IEEE transactions on systems, man, and cybernetics. Systems Vol. 52; no. 10; pp. 6246 - 6258
• Main Authors: Chen, Pengcheng, Zhang, Dan, Yu, Li, Yan, Huaicheng
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.10.2022; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Algorithms; Control algorithms; Control theory; Cyberattack; Cybersecurity; Deception attack; Denial of service attacks; Denial-of-service attack; dynamic event-triggered scheme; Feedback control; Frequency control; Linear matrix inequalities; load frequency control (LFC); Mathematical analysis; multiarea power system; Output feedback; periodic denial-of-service (DoS) attack; Power system dynamics; Power system stability; Stability analysis; System performance
• ISSN: 2168-2216; 2168-2232
• DOI: 10.1109/TSMC.2022.3143903

This article presents a novel dynamic event-triggered scheme for the load frequency regulation with periodic denial-of-service (DoS) attacks and deception attacks via decentralized output-based control algorithm. Compared with the existing event-triggered strategy, the proposed one automatically changes the parameters of the triggered condition by detecting the frequency trend of the DoS attack to change the release frequency, which can ensure the stability of the power system while increasing the probability of effective transmission subject to DoS attack and thus, reducing network bandwidth usage. First, the proposed dynamic event-triggered strategy combined with the decentralized output-based controller is presented in a unified framework to deal with deception attacks and DoS attacks in the multiarea power system. Then, we utilize the Lyapunov stability theory to analyze the exponential stability in the mean-square sense and the robustness of the power system. By solving a set of linear matrix inequalities (LMIs), a procedure is given for the design of output-based load frequency controllers. Finally, a three-area power system is exploited as a simulation to verify the effectiveness of the proposed results.