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Dry-Air 중의 동일 연면거리를 가진 고체절연물의 형상 변화에 따른 수직연면방전 특성 연구

Title
Dry-Air 중의 동일 연면거리를 가진 고체절연물의 형상 변화에 따른 수직연면방전 특성 연구
Other Titles
A Study Vertical Surface Discharge Characteristics of the Shape Change of the Solid Insulation with the Same Creepage Distance of Dry-Air
Author
배성우
Keywords
Dry-Air; Solid Insulation; Surface Discharge; Dielectric Polarization; Creeping Distance; Laminate
Issue Date
2016-01
Publisher
한국조명.전기설비학회
Citation
조명.전기설비학회논문지, v. 30, NO 1, Page. 72-78
Abstract
In terms of power components which use environmentally-friendly dry air that can substitute SF6, there have been studies on the electrical properties of the solid insulation "spacer" for the purpose of securing dielectric strength as they become smaller. This study laminated solid insulation to keep the creeping distance the same in the dry air and investigated vertical surface discharge characteristics by shape. The three sheets of disk-type solid insulation(Bakelite) were laminated in a manner to keep the creeping distance the same. The lamination was categorized as follows: "Type A" in which the insulations with the same disk diameter were laminated; "Type B" in which the insulations whose middle disk diameter was large were laminated; and "Type C" in which the ones whose middle disk diameter was small were laminated. For a vertical surface discharge experiment, dry air was injected into the test chamber depending on the shape of the laminated solid insulation, and chamber pressure was adjusted in a range of 0.1-0.6MPa. As volume decreased, surface discharging voltage by unit volume increased. This was because of dielectric polarization according to the structural characteristics of the shape of lamination. The highest surface discharging voltage was found in "Type C."
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE06597078http://hdl.handle.net/20.500.11754/30357
ISSN
1229-4691; 2287-5034
DOI
10.5207/JIEIE.2016.30.1.072
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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