@article{(Open Science Index):https://publications.waset.org/pdf/6884, title = {Comparison of S-transform and Wavelet Transform in Power Quality Analysis}, author = {Mohammad Javad Dehghani}, country = {}, institution = {}, abstract = {In the power quality analysis non-stationary nature of voltage distortions require some precise and powerful analytical techniques. The time-frequency representation (TFR) provides a powerful method for identification of the non-stationary of the signals. This paper investigates a comparative study on two techniques for analysis and visualization of voltage distortions with time-varying amplitudes. The techniques include the Discrete Wavelet Transform (DWT), and the S-Transform. Several power quality problems are analyzed using both the discrete wavelet transform and S–transform, showing clearly the advantage of the S– transform in detecting, localizing, and classifying the power quality problems.}, journal = {International Journal of Electrical and Computer Engineering}, volume = {3}, number = {2}, year = {2009}, pages = {225 - 228}, ee = {https://publications.waset.org/pdf/6884}, url = {https://publications.waset.org/vol/26}, bibsource = {https://publications.waset.org/}, issn = {eISSN: 1307-6892}, publisher = {World Academy of Science, Engineering and Technology}, index = {Open Science Index 26, 2009}, }