The ground effect in small rod-plate air gaps in connection to the corona effects and the polarity effect

Maglaras, A; Maglara, S

dc.contributor.author	Maglaras, A	en
dc.contributor.author	Maglara, S	en
dc.date.accessioned	2014-03-01T01:55:29Z
dc.date.available	2014-03-01T01:55:29Z
dc.date.issued	2006	en
dc.identifier.issn	11092777	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/27758
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-33744764018&partnerID=40&md5=8db4dd2654ba61ab17378c22ebcc0d70	en
dc.subject	Air gaps	en
dc.subject	Corona	en
dc.subject	FEM	en
dc.subject	Field strength	en
dc.subject	Ground effect	en
dc.subject	Polarity effect	en
dc.subject	Simulation	en
dc.subject.other	Electric breakdown	en
dc.subject.other	Electric corona	en
dc.subject.other	Energy gap	en
dc.subject.other	Finite element method	en
dc.subject.other	Ground effect	en
dc.subject.other	Polarization	en
dc.subject.other	Corona effects	en
dc.subject.other	Polarity effects	en
dc.subject.other	Rod-plate air gaps	en
dc.subject.other	Electrodes	en
dc.title	The ground effect in small rod-plate air gaps in connection to the corona effects and the polarity effect	en
heal.type	journalArticle	en
heal.publicationDate	2006	en
heal.abstract	In the present paper the Ground Effect of small rod-plate air gaps, which is observed due to the grounding of one of the electrodes, is investigated. Values of the field strength in the gap are recorded and analyzed for the two different arrangements, with the rod or the plate grounded. The distribution of the field along the axis of the gap is strongly affected by the geometry of the gap, the magnitude of the surrounding, the density of the mesh, and especially by the electrode chosen to be grounded. The Ground Effect also affects the breakdown voltage of the rod-plate air gaps but in a quite different way than the Polarity Effect does. The values of the breakdown voltage depend on the maximum value of the field strength in the gap, as well as the corona leakage current through the gap. According to the Polarity Effect the breakdown voltage is considerably higher in the arrangement with negative polarity on the rod because of the intensive corona effects. According to the Ground Effect the breakdown voltage is higher in the arrangement with the rod grounded because the maximum value of the field strength is lower. The Ground Effect is intense in small rod-plate air gaps, while the influence of the corona leakage current and the Polarity Effect appears in longer air gaps.	en
heal.journalName	WSEAS Transactions on Systems	en
dc.identifier.volume	5	en
dc.identifier.issue	5	en
dc.identifier.spage	1021	en
dc.identifier.epage	1028	en