DoS-Resilient Load Frequency Control of Multi-Area Power Systems: An Attack-Parameter-Dependent Approach

• Published in: IEEE transactions on information forensics and security Vol. 19; pp. 3423 - 3434
• Main Authors: Hu, Songlin, Ge, Xiaohua, Zhang, Wei, Yue, Dong
• Format: Journal Article
• Language: English
• Published: New York IEEE 2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Closed loops; Communication networks; Control systems design; Cyberattack; Denial of service attacks; Denial-of-service attack; Design analysis; Design criteria; DoS attacks; Frequency control; Jamming; Load frequency control; multi-area power systems; parameter-dependent Lyapunov functional; Parameters; Performance indices; Power system stability; sampled-data control; Stability analysis; Stability criteria
• ISSN: 1556-6013; 1556-6021
• DOI: 10.1109/TIFS.2024.3361159

This paper is concerned with a resilient load frequency control (LFC) of multi-area power systems subject to unknown load disturbances and intermittent denial-of-service (DoS) attacks. The central aim is to develop a feasible and less conservative DoS-resilient LFC scheme that constrains jammer's actions as less as possible and explores available attack information as much as possible in desired analysis and design criteria. Towards this aim, we first present a partially known DoS model that bounds merely the DoS-on durations. We then elaborate a sampled-data-based transmission paradigm which characterizes explicitly the uniform sampling instants and intermittent DoS-on and -off instants as well as the nonuniform arriving instants of the transmitted system data. Furthermore, we develop a novel attack-parameter-dependent Lyapunov functional to establish less conservative conditions for both stability analysis and controller design. It is shown that the exponential stability of the resultant closed-loop LFC system can be guaranteed, while also preserving both the desired minimum sleeping rate of DoS attacks and the prescribed <inline-formula> <tex-math notation="LaTeX">H_{\infty } </tex-math></inline-formula> performance index against changing load disturbances. Finally, several case studies of a three-area power system are provided to verify the effectiveness and superiority of the derived theoretical results.