Abstract
This paper investigates the problem of networked load frequency control (LFC) of power systems (PSs) against deception attacks. To lighten the load of the communication network, a new adaptive event-triggered scheme (ETS) is developed on the premise of maintaining a certain control performance of LFC systems. Compared with the existing ETSs, the proposed adaptive ETS can adjust the number of triggering packets, along with the state changes in the presence of deception attacks, which can reduce the average data-releasing rate. In addition, sufficient conditions can be derived, providing a trade-off between the limited network communication resources and the desired control performance of PSs. Finally, an application case is presented for the PSs to demonstrate the advantages of the proposed approach.
Highlights
Load Frequency Control ofIt is known that load frequency control (LFC) is a core component of power systems (PSs), which governs the system frequency and power exchange between regions in an optimally scheduled way [1,2,3]
The weight matrix of adaptive event-triggered scheme (ETS) and the controller gain will be calculated by LMIs
The statement of sufficient conditions for the LFC system are shown in the following
Summary
It is known that load frequency control (LFC) is a core component of PSs, which governs the system frequency and power exchange between regions in an optimally scheduled way [1,2,3]. Proportional-integral (PI) control has been widely utilized as a common control strategy in LFC [4,5,6]. LFC problem using fuzzy gain scheduling with a PI controller. With the development of the PSs, control signals are transmitted via a special power channel and an networked communication infrastructure, which brings new challenges to the PI controller design of LFC. A lot of the published literature [7,8,9,10,11] has concerned networked LFC.
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