COSTA, F. F.; http://lattes.cnpq.br/1694092671948217; COSTA, Fabiano Fragoso.
Resumen:
Partial discharges are electrical discharges that partially bridges the insulation o f high
voltage apparatus. I f their amplitudes are high, they may lead to insulation failures in some
materials. Partial discharge measurements are nondestructive tests used for the evaluation o f the
operating conditions o f high voltage equipments. I n this work, measurements were carried out
by using a data acquisition system comprising a partial discharge detecting circuit, a commercial
discharge detector and a digitizer. The partial discharges were analyzed by means o f the discrete
wavelet transform method used to decompose and represent the partial discharge signals in
their different resolutions. I t is shown that the proposed representation is a viable alternative to
characterize partial discharge signals.