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http://dx.doi.org/10.4313/JKEM.2010.23.10.804

Breakdown Characteristics of Dry Air under 362 kV GIB  

Han, Ki-Son (Transmission and Distribution Laboratory, Korea Electric Power Research Institute)
Ju, Hyung-Jun (Transmission and Distribution Laboratory, Korea Electric Power Research Institute)
Yoon, Jin-Yul (Transmission and Distribution Laboratory, Korea Electric Power Research Institute)
You, Hong-Geun (Transmission and Distribution Laboratory, Korea Electric Power Research Institute)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.23, no.10, 2010 , pp. 804-808 More about this Journal
Abstract
In this paper, we studied the dielectric breakdown voltage characteristics by the AC withstand voltage test on using green insulation dry air instead of $SF_6$ insulation gas used in the GIB (gas insulated bus) of 362 kV GIS (gas insulated switchgear). The AC withstand voltage test applied to the standard KEPCO's 362 kV GIB with dry air insulation, and the equivalence of dielectric breakdown voltage for dry air and $SF_6$ gas were examined, and the empirical formulas of dielectric breakdown voltage for dry air were calculated, and the criterion of AC withstand voltage test for dry air insulation was derived. Using the criterion, dry air can be used instead of $SF_6$ gas for 362 kV GIB in the factory acceptance test was confirmed.
Keywords
362 kV GIS; 362 kV GIB; Dry air; Breakdown voltage charecteristic; AC withstand voltage;
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