An optimal design method for improving the lightning performance of overhead high voltage transmission lines

Ekonomou, L; Iracleous, DP; Gonos, IF; Stathopulos, IA

dc.contributor.author	Ekonomou, L	en
dc.contributor.author	Iracleous, DP	en
dc.contributor.author	Gonos, IF	en
dc.contributor.author	Stathopulos, IA	en
dc.date.accessioned	2014-03-01T01:23:34Z
dc.date.available	2014-03-01T01:23:34Z
dc.date.issued	2006	en
dc.identifier.issn	0378-7796	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/17033
dc.subject	Lightning performance	en
dc.subject	Lightning protection	en
dc.subject	Optimal design method	en
dc.subject	Overhead transmission lines	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	Electric power systems designers	en
dc.subject.other	Lightning performance	en
dc.subject.other	Optimal design method	en
dc.subject.other	Overhead transmission lines	en
dc.subject.other	Electric insulation	en
dc.subject.other	Electric lines	en
dc.subject.other	Electric shielding	en
dc.subject.other	Failure analysis	en
dc.subject.other	Lightning protection	en
dc.title	An optimal design method for improving the lightning performance of overhead high voltage transmission lines	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.epsr.2005.06.011	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.epsr.2005.06.011	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	This paper presents a method for the optimal design of high voltage transmission lines taking into consideration shielding and backflashover failure rates. The minimization of suitably defined performance indices, which relate the failures caused by lightning in a transmission line to both line insulation level and tower footing resistance, is aimed. Optimum values for both line insulation level and tower footing resistance are calculated. The method is applied on several operating Hellenic transmission lines of 150 and 400 kV, respectively, carefully selected among others, due to their high failure rates during lightning thunderstorms. Special attention has been paid on open loop lines, where a possible failure could bring the system out of service causing significant problems. The obtained design parameters, which reduce the failure rates caused by lightning, are compared with the existing design parameters of the transmission lines leading up to useful conclusions. The proposed optimization method can be proved a valuable tool to the studies of electric power systems designers, intending to reduce the failure rates caused by lightning. (c) 2005 Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE SA	en
heal.journalName	Electric Power Systems Research	en
dc.identifier.doi	10.1016/j.epsr.2005.06.011	en
dc.identifier.isi	ISI:000236048100012	en
dc.identifier.volume	76	en
dc.identifier.issue	6-7	en
dc.identifier.spage	493	en
dc.identifier.epage	499	en