Wavelet transform-based composite disturbance detection method for power quality in distribution networks

Abstract

Abstract Changes in modal extremum points can result in a low signal-to-noise ratio. Therefore, it is necessary to design a new composite disturbance detection method for power quality in distribution networks based on wavelet transform. That is to say, the abnormal points of composite disturbances in the power quality of the distribution network have been identified, and wavelet transform has been used for detection and classification, thus achieving comprehensive disturbance detection of power quality in the distribution network. The experimental results show that under different types of disturbances, the designed distribution network electrical quality composite disturbance detection method has a high signal-to-noise ratio and reliability and has a certain application value. Has made certain contributions to improving the power quality of the distribution network and ensuring its stable operation.