Application Of Wavelet In Power Quality Detection And Classification

Along with the proliferation of electronically controlled equipments in power system, power quality has been a great issue to both suppliers and users of electricity. In order to improve the power efficiency, it is necessary to detect the power quality sensitively, classify them accurately and clear them effectively.Since the signals of power quality disturbances are nonstationary, it is a tough task to analyze them. Many researchers have devoted their work to this field and come up with the conclusion that wavelet is a powerful tool for this case.The job of this research is exploring the wavelet-based methods for power quality detection and classification. The content of this article mainly contains three parts as follows.1) The conception of power quality and the general methods for power quality analysis2) The theory of wavelet transform and its application3) The theoretical foundation, the impractical implementation, the simulation experiments, the evaluation and the improvement of wavelet-based methods for power quality detection and classification...