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http://dx.doi.org/10.4313/JKEM.2020.33.6.490

Comparative Analysis of PD Characteristics Under SF6, g3 and Dry Air Insulation  

Shin, Han-sin (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Kim, Nam-Hoon (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Kim, Sung-Wook (Division of Smart Electrical and Electronic Engineering, Silla University)
Kil, Gyung-Suk (Department of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.33, no.6, 2020 , pp. 490-494 More about this Journal
Abstract
Sulphur hexafluoride (SF6) is mostly used as a current-insulating medium in gas-insulated switchgears (GIS), owing to its excellent dielectric strength and arc-extinguishing performance. The global warming potential (GWP) of SF6, however, is 23,900 times that of CO2, and its life time in the atmosphere is 3,200 years. For these reasons, new eco-friendly gases to replace SF6 are required. In this study, the partial discharge (PD) characteristics of green gas for grid (g3) and dry air (N2/O2) were analyzed to compare with those of SF6. A PD electrode system was designed to simulate the protrusion defect in GISs and fabricated for experimentation. To compare the PD characteristics of each gas, the discharge inception voltage (DIV), discharge extinction voltage (DEV), discharge magnitude, discharge pulse number, and phase pattern were analyzed. Results from this study are expected to provide fundamental materials for the design of eco-friendly GISs.
Keywords
Sulphur hexafluoride; Gas insulated switchgears; Eco-friendly gas; Partial discharge; Discharge inception voltage; Discharge extinction voltage;
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Times Cited By KSCI : 3  (Citation Analysis)
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