Resumo

CALVA CHAVARRIA, Primo Alberto; TORRES PENALOZA, Diana  e  RAMIREZ PACHECO, Carlos. Online partial discharges localization system. Rev.fac.ing.univ. Antioquia [online]. 2013, n.66, pp.91-103. ISSN 0120-6230.

In this paper the design and construction of an online non-invasive non­invasive partial discharges (PD) localization system is presented; it is integrated by four equal discone antennas with a wideband of 30 MHz to 1.2 GHz and a central frequency of 615 MHz connected to a four-channel high-resolution digital oscilloscope. The obtained electromagnetic signals are processed in a personal computer using Wavelet Transform and Fast Fourier Transform (FFT) to reduce electromagnetic noise and identify the source of the PD respectively. Additionally, a spherical algorithm for spatial localization in R³ is used. High-voltage laboratory and in situ measurements are reported.

Palavras-chave : PD's; discone antenna; radiometric; FFT.

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