Surface discharge analysis at trapezoidal testing voltage waveforms
2015 (English)In: 2015 IEEE Eindhoven PowerTech, PowerTech 2015, IEEE conference proceedings, 2015Conference paper (Refereed)Text
Surface discharge (SD), as one important partial discharge (PD) source, were measured in the test cell representing the surface discharge, with polycarbonate plate as the insulating material covered completely on the bottom ground electrode. This study compares PD patterns stimulated by sinusoidal voltage and by several forms of trapezoid-wave voltage, including the limiting cases of triangular and approximately square-wave voltages. Trapezoid-based voltage waveforms are considered as a potential new off-line diagnostic method for PD sources. The results show that surface discharge produced in the asymmetric test cell shows strong asymmetric behavior during the constant-voltage period between two polarities under trapezoidal and square voltage waveforms. A faster rise time and increased duration of the constant peak-voltage part of the waveform caused more obvious asymmetry of the surface discharge.
Place, publisher, year, edition, pages
IEEE conference proceedings, 2015.
asymmetry, Surface discharge, trapezoidal testing voltage, Surface discharges, Asymmetric behaviors, Diagnostic methods, Discharge analysis, Polycarbonate plates, Sinusoidal voltage, Testing voltages, Voltage waveforms, Partial discharges
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-181164DOI: 10.1109/PTC.2015.7232723ScopusID: 2-s2.0-84951310274ISBN: 9781479976935OAI: oai:DiVA.org:kth-181164DiVA: diva2:903733
IEEE Eindhoven PowerTech, PowerTech 2015, 29 June 2015 through 2 July 2015
QC 201602162016-02-162016-01-292016-02-16Bibliographically approved