Reliable control strategy based on sliding mode observer against FDI attacks in smart grid. Issue 2 (4th May 2022)

• Record Type: Journal Article
• Authors: Li, Jian; Yang, Defu; Su, Qingyu
• Is Part Of: Asian journal of control. Volume 25:Issue 2(2023)
• Page Start: 910
• Page End: 920
• Publication Date: 2022-05-04
• Subjects: attack reconstruction -- false data injection attack -- power system -- sliding mode obersver; Automatic control -- Periodicals; Control theory -- Periodicals; 629.805
• DOI: 10.1002/asjc.2839
• Languages: English
• ISSNs: 1561-8625

Abstract

Abstract: This paper is concerned with the reliable operation of cyber‐physical systems under false data injection attacks. First of all, a robust adaptive sliding mode observer is designed to estimate the state of the power system; different from the traditional sliding mode observer, the observer we designed is not only robust to state errors but also can automatically adjust the parameter of attack identification. Secondly, a method of attack reconstruction has been given to estimate the actual attack signal. Finally, a reliable sliding mode control strategy is proposed to eliminate the impact of false data injection attacks; compared with the existing results, the designed defense strategy utilizes the reconstructed attack signal in the attack identification scheme and state error signal at the same time. Moreover, a power system with 3 generator buses and 6 load buses is taken as an simulation example to verify the availability of the proposed control strategy.