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dc.contributor.authorTaxt, Henning
dc.contributor.authorNiayesh, Kaveh
dc.contributor.authorRunde, Magne
dc.date.accessioned2018-04-19T12:34:21Z
dc.date.available2018-04-19T12:34:21Z
dc.date.created2018-02-12T15:13:18Z
dc.date.issued2018
dc.identifier.issn0885-8977
dc.identifier.urihttp://hdl.handle.net/11250/2495109
dc.description.abstractThe expected abolishment of SF6-gas in medium voltage switchgear has prompted a search for replacements for the switch types that depend on SF6 to obtain the required capability, reliability, compactness and cost. Ablation of polymers can enhance the arc-quenching capabilities in certain electrical switch designs. Several aspects, like electric arc plasma composition, gas flow and wall stabilization must play together to obtain a successful interruption. In this paper, open and closed switch geometries and two nozzle materials (PP and PTFE) are studied in medium voltage interruption experiments. Fundamental differences in the arc-quenching process for PP and PTFE are shown. In the case of PTFE, the current interruption performance depends on gas flow resulting from the pressure built up under the high current period. In the case of PP, the gas flow plays a lesser role for the arc-quenching capability, as the interruption capability is large even in an open design with no forced gas flow around current zero. Current chopping happens a few tens of microseconds before voltage zero crossing, thereafter, a remnant conductance in the contact gap is observed, lasting for up to several milliseconds. This can be explained by an arc-to-glow transition in presence of hydrogen.nb_NO
dc.language.isoengnb_NO
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)nb_NO
dc.titleMedium voltage load current interruption in presence of ablating polymer materialnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.journalIEEE Transactions on Power Deliverynb_NO
dc.identifier.doi10.1109/TPWRD.2018.2803165
dc.identifier.cristin1564488
dc.description.localcodeThis article has been accepted for publication in a future issue of this journal, but has not been fully edited. Content may change prior to final publication. © 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.nb_NO
cristin.unitcode194,63,20,0
cristin.unitnameInstitutt for elkraftteknikk
cristin.ispublishedfalse
cristin.fulltextpostprint
cristin.qualitycode2


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