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On the use of continous-wavelet trasnform for fault localization in distribution power networks

pubblicazioni - Articolo

On the use of continous-wavelet trasnform for fault localization in distribution power networks

LOCATION IN DISTRIBUTION POWER NETWORKS A. Borghetti1, S. Corsi2, C.A. Nucci1, M. Paolone1, L. Peretto1, R. Tinarelli1 1 Dept. of Electrical Engineering, University of Bologna, Bologna, Italy 2 CESI, Milan, Italy Abstract – The paper illustrates a procedure based on the continuous-wavelet transform for the analysis of voltage transients due to line faults and discusses its application to fault location in power distribution networks. The analysis carried out allows inferring that correlation exists between some characteristic frequencies of the transformed signal and specific paths in the network covered by the traveling waves originated by the fault. This correlation provides useful information for the location of the faulted section in a MV distribution network starting from the recorded voltage transients at one or more busses. The presented approach can find a useful application in the realization of a distributed measurement and fault locating system. A brief description of such a system and the estimation of the relevant uncertainty are also provided in the paper. PUBBLICATO A5055485 (PAD – 734699)

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