期刊
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
卷 53, 期 16, 页码 3508-3523出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/00207721.2022.2093418
关键词
Load frequency control; power system; denial-of-service attacks; adaptive event-triggered scheme; exponential stability; observer
类别
资金
- National Natural Science Foundation of China [62173218, 62103254]
This paper studies the problem of load frequency control (LFC) in smart grids under aperiodic denial-of-service (DoS) attacks. An adaptive event-triggered LFC scheme is proposed to reduce the update frequency of control signals and mitigate the impact of DoS attacks. A switching model is used to consider the simultaneous effect of DoS attacks and event-triggered mechanisms. The paper also provides sufficient conditions for guaranteeing the exponential stability of the system with H-infinity performance.
This paper studies the load frequency control (LFC) problem of smart grids under aperiodic denial-of-service (DoS) attacks. First, a switching observer model is constructed to deal with the unavailability of system status. Second, an adaptive event-triggered LFC scheme is proposed, which effectively reduces the update frequency of control signals and reduces the impact of aperiodic DoS attacks simultaneously. Third, by considering the impact of DoS attacks and event-triggered mechanisms at the same time, the system is modelled as a switching model. Then, by constructing a suitable piecewise Lyapunov functional, sufficient conditions are derived to ensure the exponential stability of the system with H-infinity performance. In addition, the joint design method of observer and controller is also developed. Finally, a single-area power system is taken as an example to verify the effectiveness of the proposed method.
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