The Application of Multi-Resolution Analysis in Power Quality Disturbance

This paper presents an approach of wavelet transform based on multi-resolution analysis that is able to provide the detection and location as well as the identification of power quality problems present in transient and disturbed signals. The method was developed by using the given sample frequency to calculate the suitable decomposition level of power quality signals to optimized the program. The advantage of the proposed approach is to monitor the time of the occurrence and duration of the disturbances accurately. In this paper, some power quality signals with power quality disturbances have been analyzed to prove the accuracy of the method.