Abstract
The congest in an open communication system may cause the failure of the load frequency control (LFC) scheme in the power system. Furthermore, the increase of wind power penetration degrades the stability of the LFC scheme. To address these two issues, this paper analysis the stability of the LFC schemes with both the Bernoulli model and the Gilbert-Elliott model packet losses based on the Markov jump system. The effect of wind penetration on the stability of the LFC schemes also discussed as inertia reduction. Moreover, the combined action of packet losses and inertia reduction is discussed both in theoretical. Then, a resilient event-triggered LFC scheme is proposed to deal with packet losses and wind penetration. Simulation results with different scale of power systems are given to validate the proposed LFC scheme.
Highlights
Load frequency control (LFC) scheme is an essential and commonly used control system of modern power systems
The resilient event-triggered LFC scheme is proposed to deal with the packet losses and enhance frequency stability with fluctuation of the wind power embedded
In this paper, a resilient event-triggered controller design method is proposed for LFC scheme of decentralized multi-area power system with wind farm and packet losses
Summary
Load frequency control (LFC) scheme is an essential and commonly used control system of modern power systems. In the adverse network, the communication link became temporally correlated fading channels with an inherent memory, i.e. the consecutive packet losses (a long delay) are more likely to happen This kind of network usually modeled as Gilbert-Eliot (GE) process [17]–[19], which has not been discussed in load frequency control. The event-triggered mechanism on the supplementary control signal channel considering the stochastic communication property and practical update period should be discussed. To address the above-mentioned challenges, this paper analyzed the stability of the LFC scheme with two kinds of packet losses They obey Bernoulli distribution and GE distribution, representing the usual network or adverse network, VOLUME 9, 2021 respectively. The resilient event-triggered LFC scheme is proposed to deal with the packet losses and enhance frequency stability with fluctuation of the wind power embedded. Based on the discrete model, we presents the LFC model involving the communication system with packet losses
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