Wavelet transform of reactor power transients
B. Shen, John G. Williams, Wayne C. Jouse · 2002
The feasibility of employing wavelet transforms for feature extraction during reactor power transients is investigated in this work. This summary describes applications of a discrete wavelet transform to power transients in the University of Arizona TRIGA reactor, initiated by step reactivity insertions. Analysis shows that the transform results in a compact representation of the reactor's behavior. The significant features of the transients are contained in relatively few coefficients. The on-line windowed wavelet transform is implemented by an efficient algorithm and wavelet patterns under different translation are obtained. The compact wavelet representation can then be used for transient identification.>