Abstract
This paper describes the design of a Fuzzy logic based controller to counter the small instability in power system. The stabilizing signal is computed in real time using suitable fuzzy membership functions depending upon the state of the power factor. The use of output membership function permits further fine tuning of the controller parameters for varied system configurations especially in multi machine environment. The efficacy of the proposed stabilizing technique has been demonstrated using multi-machine computer simulation I. INTRODUCTION As inductive load goes on increasing on three phase power system the power factor of line which is given by 'CosФ' also get increased. Here in this research paper a scheme is provided where shunt capacitor banks are used to improve the power factor. A number of different shunt capacitor banks will be used in this proposed in this project. Only a fixed number of capacitor banks will be used at a time based on the requirement. To switch the capacitor banks ON a thyristor based switch will be used. The switching of the thyristor will be controlled by the fuzzy logic controller.
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