Thermal effect of the recloser operation cycle on bare overhead conductors

Halevidis, CD; Karagiannopoulos, CG; Bourkas, PD

dc.contributor.author	Halevidis, CD	en
dc.contributor.author	Karagiannopoulos, CG	en
dc.contributor.author	Bourkas, PD	en
dc.date.accessioned	2014-03-01T02:14:50Z
dc.date.available	2014-03-01T02:14:50Z
dc.date.issued	2012	en
dc.identifier.issn	08858977	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/30146
dc.subject	Automatic circuit reclosers	en
dc.subject	medium-voltage distribution systems	en
dc.subject	multiple short circuits	en
dc.subject	overhead bare conductors	en
dc.subject	short-circuit current	en
dc.subject	thermal effect	en
dc.subject.other	Calculation methods	en
dc.subject.other	Distribution systems	en
dc.subject.other	Equivalent thermal	en
dc.subject.other	Heating process	en
dc.subject.other	Medium voltage	en
dc.subject.other	Numerical solution	en
dc.subject.other	Operation cycles	en
dc.subject.other	Overhead conductors	en
dc.subject.other	Reclosers	en
dc.subject.other	Reclosing	en
dc.subject.other	Temperature rise	en
dc.subject.other	Tripping operation	en
dc.subject.other	Electric power transmission	en
dc.subject.other	Thermal effects	en
dc.subject.other	Electrical engineering	en
dc.title	Thermal effect of the recloser operation cycle on bare overhead conductors	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TPWRD.2012.2183682	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TPWRD.2012.2183682	en
heal.identifier.secondary	6156493	en
heal.publicationDate	2012	en
heal.abstract	A new calculation method of the temperature rise generated from multiple (consecutive) short circuits, to which bare overhead conductors are subjected, is proposed in this paper. Multiple short circuits are common in medium-voltage lines protected by reclosers due to their operation cycle. The proposed method treats each short circuit as a separate event. In additiony, the cooling between each short circuit is taken into account. The results of the proposed method are compared to the results given by the method of the IEC 60865-1 standard. The application of the proposed method results in greater temperature rises when the equivalent thermal current density is greater than a threshold. Furthermore, alterations to the recloser operation cycle are performed in order to investigate its effect on the generated temperature rise, namely, alterations to the reclosing interval between successive tripping operations and the ratio of fast to delayed trips. Finally, the proposed method was compared to an exact numerical solution of the heating process. © 2012 IEEE.	en
heal.journalName	IEEE Transactions on Power Delivery	en
dc.identifier.doi	10.1109/TPWRD.2012.2183682	en
dc.identifier.volume	27	en
dc.identifier.issue	2	en
dc.identifier.spage	568	en
dc.identifier.epage	574	en