Dry Air/O2 혼합가스의 혼합비에 따른 절연파괴 및 연면방전 특성 연구

Title
Dry Air/O2 혼합가스의 혼합비에 따른 절연파괴 및 연면방전 특성 연구
Other Titles
A Study on Characteristics of Insulation Breakdown and Surface Discharge by the Mixing Ratio of Dry Air/O2 gas mixtures
Author(s)
배성우석정후백종현임동영김기채박원주
Keywords
Breakdown Voltage; Dry Air/O2 Mixture Gas; SF6; Surface Flashover Voltage
Issue Date
201506
Publisher
한국조명.전기설비학회
Citation
조명.전기설비학회논문지, v.29, no.6, pp.49 - 57
Abstract
This paper presents the discharge characteristics and economic feasibility of a Dry Air/O2 and a N2/O2 mixture gas in order to review SF6 alternative. From AC discharge experiment in an quasi-uniform field, it was found that the optimal N2/O2 mixing ratio which breakdown voltage and surface flashover voltage were the highest was 70/30 and that the pressure dependence on the breakdown voltage was higher than that of the surface flashover voltage in the Dry Air/O2 and the N2/O2 mixture gas. The mixing ratio (70/30) and the tendency of the pressure dependence were described in detail based on physical factors (impact ionization coefficient, electron attachment coefficient, secondary electron emission coefficient) involved in discharge mechanism and a electron source, respectively. In addition, the performance insulation and the economic feasibility of the Dry Air/O2 and the N2/O2 mixture gas were discussed so that Dry Air/O2 mixture gaswas more suitable than N2/O2 mixture gas to the SF6 alternative.
URI
http://hdl.handle.net/YU.REPOSITORY/31869
ISSN
1229-4691
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공과대학 > 전기공학과 > Articles
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