An experimental estimation of the average mobility change of free electrons during dielectric aging at the model solid - liquid insulators

Halaris, PG; Tsarabaris, PT; Katsanis, JS; Polykrati, AD

dc.contributor.author	Halaris, PG	en
dc.contributor.author	Tsarabaris, PT	en
dc.contributor.author	Katsanis, JS	en
dc.contributor.author	Polykrati, AD	en
dc.date.accessioned	2014-03-01T02:50:18Z
dc.date.available	2014-03-01T02:50:18Z
dc.date.issued	2006	en
dc.identifier.issn	14827891	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35048
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33751202395&partnerID=40&md5=eeb7fd6be33580915d8011a894f5a693	en
dc.subject	Electrical insulation	en
dc.subject	Electrical protection	en
dc.subject	High-voltage measurements	en
dc.subject	Partial discharges	en
dc.subject	Solid polymeric insulators	en
dc.subject.other	Aging of materials	en
dc.subject.other	Dielectric materials	en
dc.subject.other	Electric fields	en
dc.subject.other	Electron mobility	en
dc.subject.other	Electrons	en
dc.subject.other	Impact ionization	en
dc.subject.other	Insulating oil	en
dc.subject.other	Partial discharges	en
dc.subject.other	Voltage measurement	en
dc.subject.other	Electrical protection	en
dc.subject.other	High-voltage measurements	en
dc.subject.other	Solid polymeric insulators	en
dc.subject.other	Electric insulators	en
dc.title	An experimental estimation of the average mobility change of free electrons during dielectric aging at the model solid - liquid insulators	en
heal.type	conferenceItem	en
heal.publicationDate	2006	en
heal.abstract	In this paper, an experimental estimation of the average mobility change of free electronic carriers at the model solid-liquid insulators during their dielectric aging. For this purpose specimens of industrial bakelite were electrically stressed by an imposed high AC voltage. The electrode set-up used was metal tip-sample of solid insulator-metal in an environment of transformer oil. Measurements were taken by increasing the imposed voltage in steps of 1 kV until the ultimate breakdown of the insulators. The values of the average mobility of the model was calculated through the measurement of charge which flows through the sample, as a result of partial discharges, the kinetic energy of free electrical carriers and the applied field value. From these measurements the exponential increase of the average mobility change of the model solid-liquid insulator in relation with the value of the imposed electric field was noted. In satisfactory agreement with the theoretical data it seems that the average mobility is increased due to the impact ionization which takes place during the dielectric aging stages of the insulating model.	en
heal.journalName	Series on Energy and Power Systems	en
dc.identifier.volume	2006	en
dc.identifier.spage	75	en
dc.identifier.epage	79	en