Application of Wavelet Analysis in Power Systems
Reza Shariatinasab, Mohsen Akbari, Bijan Rahmani · InTech eBooks · 2012
Many books and papers have been written that explain WT of signals and can be read for further understanding of the basics of theory. The first recorded mention of what we now call a wavelet seems to be in 1909, in a thesis by A. Haar. The concept of wavelets in its present theoretical form was first proposed by J. Morlet, a Geophisicist, and the team at the Marseille Theoretical Physics Center working under A. Grossmann, a theoretical phisicist, in France. They provided a way of thinking for wavelets based on physical intuition. They also proved that with nearly any wave shape they could recover the signal exactly from its transform (Graps, 1995). In other words, the transform of a signal does not change the information content presented in the signal.