Single partial discharge in nonuniform electric field for different polymer dielectrics

The first single partial discharges under ramp voltage are investigated in submillimetric air gaps and nonuniform field. Several polymer films with different thicknesses are used as a dielectric barrier: 12- and 100-μm polyethylene terephthalate films, 28-μm polyimide film, 6- and 12-μm polypropylen...

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Bibliographic Details
Published in2016 IEEE International Conference on Dielectrics (ICD) Vol. 2; pp. 1171 - 1174
Main Authors Emelyanov, Oleg, Kliuiko, Pavel, Shemet, Mikhail
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2016
Subjects
Air gaps
dielectric barrier discharge
Dielectrics
Discharges (electric)
Needles
nonuniform electric field
partial discharge
Partial discharges
polymer
Positron emission tomography
surface charge
Surface discharges
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Summary:The first single partial discharges under ramp voltage are investigated in submillimetric air gaps and nonuniform field. Several polymer films with different thicknesses are used as a dielectric barrier: 12- and 100-μm polyethylene terephthalate films, 28-μm polyimide film, 6- and 12-μm polypropylene films. The inception voltage (breakdown voltage) and the discharge current are registered. The parameters of the accumulated surface charges measured by a rotating capacitive probe are presented. The surface charge patterns obtained by means of the dust figure method are shown. Probable mechanisms of the discharge development are discussed.
DOI:10.1109/ICD.2016.7547826