Suggested Flicker monitoring system based on wavelet transform

The present paper suggests two routines to diagnosis the Flicker by using discrete Wavelet analysis. The routines aim to classify the Flicker voltage limits of studied signals as acceptable or not, according to the standard limits. The first routine depends on the values of details and approximations due to the wavelet analysis. The second depends on separating the residuals (the amount of deformation on the studied signals due to Flicker) by wavelet analysis, and then determine the residuals´ stored energy by applying FFT transform to evaluate it. The suggested two routines can be implemented for different types of loads (Lamps, Arc Furnace and Induction Motors). Comparisons between the two routines are reported with the complete investigations. Under Matlab - Toolboxes, the results are verified with many demonstrations.