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Design of solid/gas composite insulation system with embedded electrode


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Title: Design of solid/gas composite insulation system with embedded electrode
Authors: Yamashita, Takahiko / Furusato, Tomohiro / Asari, Naoki / Sato, Junichi
Issue Date: 23-Jan-2019
Publisher: IEEE
Citation: IEEE Transactions on Dielectrics and Electrical Insulation, 26(1), pp.56-63; 2019
Abstract: Solid insulated switchgear (SIS) has been developed as a substitution for sulfur hexafluoride gas insulated switchgears in the medium voltage class.Its main circuit including a vacuum interrupter is coated with epoxy resin.An embedded electrode was employed in order to enhance the surface insulation performance for further miniaturization and higher stress design. In the previous studies, the surface insulation performance was examined by using a model electrode system which modified the electrode system of the moving part of SIS and the estimation method of the surface breakdown voltage was proposed.In addition, the simulation of the surface breakdown characteristics of a model electrode system was conducted and a design method was proposed. In the present study, the insulation performance of the solid part was taken into account and the insulation design was conducted using the proposed design method. The 'equivalent insulation distance' was introduced and the partial discharge inception field strength was also taken into account.The insulation design was done for 22, 33 and 77 kV systems and the values of the design parameters were provided. In addition,it was found that two different types of the design concepts were available.
Keywords: composite insulation / insulation design / switchgear
URI: http://hdl.handle.net/10069/38833
ISSN: 10709878
DOI: 10.1109/TDEI.2018.007436
Rights: © 2019 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.
Type: Journal Article
Text Version: author
Appears in Collections:Articles in academic journal

Citable URI : http://hdl.handle.net/10069/38833

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