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Haar Wavelet-Based Method for Fast Fault Classification in Transmission Lines

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6 Author(s)
Silva, K.M. ; Dept. of Electr. Eng., Fed. Univ. of Campina Grande ; Dantas, K.M.C. ; Souza, B.A. ; Brito, N.S.D.
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The application of Haar wavelet transform for fault classification in transmission lines is proposed. The faulted phases identification is carried out by the analysis of the energy of the detail coefficients of the phase currents. In addition, by the analysis of the smooth coefficients of the neutral current, the ground faults can be distinguished from phase to phase ones. The algorithm was evaluated with EMTP-simulated faults. The obtained results reveal that the proposed method can accurately identify transmission line faults from a wide variety of power system operating conditions, within the first half-cycle after the beginning of the fault

Published in:

Transmission & Distribution Conference and Exposition: Latin America, 2006. TDC '06. IEEE/PES

Date of Conference:

15-18 Aug. 2006