Application of digital signal processing techniques to analyze partial discharge data

Experiments were conducted to investigate whether the electrical tree growth in PMMA (polymethylmethacrylate) could be characterized by the partial discharges (PD) that evolved during its progress. PMMA samples with a needle-plane gap were aged under 50 Hz AC voltage, which gave rise to branch and b...

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Bibliographic Details
Published in2000 Annual Report Conference on Electrical Insulation and Dielectric Phenomena (Cat. No.00CH37132) Vol. 1; pp. 341 - 346 vol.1
Main Authors Basappa, P., Lakdawala, V.
Format Conference Proceeding
LanguageEnglish
Published IEEE 2000
Subjects
Aging
Data analysis
Digital signal processing
Microscopy
Needles
Partial discharges
Pulse measurements
Signal analysis
Trees - insulation
Voltage
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Summary:Experiments were conducted to investigate whether the electrical tree growth in PMMA (polymethylmethacrylate) could be characterized by the partial discharges (PD) that evolved during its progress. PMMA samples with a needle-plane gap were aged under 50 Hz AC voltage, which gave rise to branch and bush type trees. The PDs were collected for a constant duration at regular intervals of times continuously all through the aging sequence. The tree growth was monitored by taking the microphotographs periodically, without interrupting the aging voltage. The parameters of the PD amplitude distributions obtained during the growth were analyzed later by correlation and spectral analysis methods.
ISBN:9780780364134
0780364139
DOI:10.1109/CEIDP.2000.885296