Abstract
Abstract In this paper, selection of the variable structure controller (VSC) feedback gains by genetic algorithms (GA) is presented contrary to the trial and error selection of the variable structure feedback gains reported in the literature. This is considered as one of the main underlying problems associated with VSC. The proposed method provides an optimal and systematic way of feedback gains selection in the VSC. To test the effectiveness of the new selection method, the proposed design has been applied to the load frequency problem of a single area power system. The system performance against step load variations has been simulated and compared to some previous methods, Simulation results show that not only the dynamic system performance has been improved, but also the control effort is dramatically reduced.
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