Adaptive threshold based on wavelet transform applied to the segmentation of single and combined power quality disturbances
An adaptive threshold is determined for segmentation of power quality signals. The power quality signals are based on mathematical models and acquired in field. Wavelet transforms are used to decompose the signals. The intersections between the adaptive threshold and the wavelet transform detail curves determine the start and the end of the segments. The adaptive threshold was accurate in more than 96 percent of the signals.
power quality electrical power system signal segmentation discrete wavelet transform