Stressing the model of a solid-liquid dielectric through the application of high DC voltage

Halaris, PG; Bourkas, PD; Moronis, AX; Tsitsias, SA; Tsitsoglou, I; Karagiannopoulos, CG

dc.contributor.author	Halaris, PG	en
dc.contributor.author	Bourkas, PD	en
dc.contributor.author	Moronis, AX	en
dc.contributor.author	Tsitsias, SA	en
dc.contributor.author	Tsitsoglou, I	en
dc.contributor.author	Karagiannopoulos, CG	en
dc.date.accessioned	2014-03-01T01:48:46Z
dc.date.available	2014-03-01T01:48:46Z
dc.date.issued	1999	en
dc.identifier.issn	10783466	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/25591
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-0032624579&partnerID=40&md5=91d2b86f56c3f17be58a7687f17fecff	en
dc.subject.other	Dielectric aging	en
dc.subject.other	Electric charge flow	en
dc.subject.other	Polymeric insulators	en
dc.subject.other	Solid-liquid dielectric	en
dc.subject.other	Aging of materials	en
dc.subject.other	Computer simulation	en
dc.subject.other	Dielectric materials	en
dc.subject.other	Electric charge	en
dc.subject.other	Electric discharges	en
dc.subject.other	Electric field effects	en
dc.subject.other	Electric insulators	en
dc.subject.other	Electric variables measurement	en
dc.subject.other	Impact ionization	en
dc.subject.other	Mathematical models	en
dc.subject.other	Partial discharges	en
dc.subject.other	Electric breakdown	en
dc.title	Stressing the model of a solid-liquid dielectric through the application of high DC voltage	en
heal.type	journalArticle	en
heal.publicationDate	1999	en
heal.abstract	An experimental approach to the prebreakdown phenomena in a model of a solid-liquid dielectric, under the application of high DC voltage at room temperature, is performed. The resulting partial discharges are detected and measured. The polymeric solid insulating materials are immersed in transformer oil. The stressed materials are prepared in disk form with a thickness of 1 mm and 2 mm. A tip-plane electrode assembly is used to simulate the most adverse cases met in practice (maximum field nonhomogeneity). The total width of the potential steps across the samples owing to the presence of partial discharges is specified in relation to the peak value of the applied DC voltage or the corresponding electric field F. In addition, the total electric charge flow through the samples is measured. The first measurements are taken at the instant when partial discharges started out, and then the measuring procedure continued, increasing the voltage 1 kV at a time. The duration of the repeated voltage applications was 2, 5, and 10 minutes. A great number of measurements were taken, and the experimental data were processed by the use of specific software. The results show that impact ionization takes place in the prebreakdown stages.	en
heal.journalName	International Journal of Power and Energy Systems	en
dc.identifier.volume	19	en
dc.identifier.issue	1	en
dc.identifier.spage	23	en
dc.identifier.epage	27	en