Based on FFT Transforms Appliance Identification Method

Abstract

At present, with the increasing daily power con-sumption of resisdents, more and more electric energy is wasted. Userful often forget that they have turn on the appliance, cause safety hazards and the waste of the electric energy. In order to solve the problem, allow users to see their electrical appliances in use anywhere, reduce the waste of electric energy. This paper come up with a method what based on FFT transforms appliance identification system. First, the current signal is converted into a harmonic signal in the frequency domain by the FFT transform. Then start electrical identification by use KNN algorithm and Apriori algorithm, through simulation and experiment to verify the feadibility of the project. The result of research shows that, the project for signal appliances recognition accuracy can arrived 100%, for multiple appliances recognition accuracy can arrived 97%. Effectively realize the function of the electrical recognition. The results of the study has certain referonce value for the power grid company to plan the dispatch of the power system and power grid construction.