Abstract
Practical stability analysis for delayed systems is discussed. Weak practical stability conditions are derived by using Halanay’s inequality and the Lyapunov method. The results are applied to address the problem of practical stability of a power system over a delay-induced communication network. An event-detection-based control scheme is proposed to reduce the communication burdens. Based on the obtained practical stability conditions and the proposed event-detection scheme, sufficient practical stability conditions for load frequency control of a networked power system are given. Furthermore, a new design approach to the event-detection-based controller is presented. Finally, a numerical simulation is given to show the effectiveness and advantage of the obtained results.
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