Memory-Based Event-Triggering H∞ Load Frequency Control for Power Systems Under Deception Attacks

• Published in: IEEE transactions on cybernetics Vol. 50; no. 11; pp. 4610 - 4618
• Main Authors: Tian, Engang, Peng, Chen
• Format: Journal Article
• Language: English
• Published: United States IEEE 01.11.2020; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Bandwidth; Constraints; Control systems; Cyberattack; Deception; Deception attacks; Frequency control; H-infinity control; Indexes; load frequency control (LFC); memory-event-triggered control; Packet transmission; Power system dynamics; Power system stability; power systems
• ISSN: 2168-2267; 2168-2275; 2168-2275
• DOI: 10.1109/TCYB.2020.2972384

This article proposes a memory-based event-triggering <inline-formula> <tex-math notation="LaTeX">H_{\infty } </tex-math></inline-formula> load frequency control (LFC) method for power systems through a bandwidth-constrained open network. To overcome the bandwidth constraint, a memory-based event-triggered scheme (METS) is first proposed to reduce the number of transmitted packets. Compared with the existing memoryless event-triggered schemes, the proposed METS has the advantage to utilize series of the latest released signals. To deal with the random deception attacks induced by open networks, a networked power system model is well established, which couples the effects of METS and random deception attacks in a unified framework. Then, a sufficient stabilization criterion is derived to obtain the memory <inline-formula> <tex-math notation="LaTeX">H_{\infty } </tex-math></inline-formula> LFC controller gains and event-triggered parameters simultaneously. Compared with existing memoryless LFC, the control performance is greatly improved since the latest released dynamic information is well utilized. Finally, an illustrative example is used to show the effectiveness of the proposed method.