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dc.contributor.authorHåkonseth, Gunnar
dc.contributor.authorIldstad, Erling
dc.contributor.authorFuruheim, Knut Magne
dc.date.accessioned2017-11-15T08:05:21Z
dc.date.available2017-11-15T08:05:21Z
dc.date.created2017-10-13T09:33:24Z
dc.date.issued2017
dc.identifier.citationProceedings of the Nordic Insulation Symposium. 2017, 25 .nb_NO
dc.identifier.issn2535-3969
dc.identifier.urihttp://hdl.handle.net/11250/2466307
dc.description.abstractDetailed knowledge of the electric field in the insulation of mass-impregnated HVDC cables is important in order to understand their breakdown mechanisms and to improve their design. When calculating the local electric field, the wrapped structure of paper and impregnating oil needs to be taken into account. This gives information that is lost when the insulation is treated as a single, homogeneous material, which is done when the macro-scopic electric field is calculated. We have modeled mass-impregnated cable insulation with finite element analysis software and subsequently calculated the local electric field with the finite element method. The wrapped structure of paper and impregnating oil was taken into account. In our model, the magnitude of the local field in the paper was up to twice as high as the magnitude of the macroscopic field. Field enhancements came from oilfilled butt gaps, and particularly from their edges. The geometry of the insulation influenced the magnitude of the field enhancements.nb_NO
dc.language.isoengnb_NO
dc.publisherNTNUnb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleLocal Electric Field in Mass-Impregnated HVDC Cablesnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionpublishedVersionnb_NO
dc.source.pagenumber6nb_NO
dc.source.volume25nb_NO
dc.source.journalProceedings of the Nordic Insulation Symposiumnb_NO
dc.identifier.doi10.5324/nordis.v0i25.2351
dc.identifier.cristin1504376
dc.relation.projectNorges forskningsråd: 256405nb_NO
dc.description.localcode© 2017 The Authors. Published by NTNU. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/nb_NO
cristin.unitcode194,63,20,0
cristin.unitnameInstitutt for elkraftteknikk
cristin.ispublishedtrue
cristin.fulltextpreprint


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