NDLI: Experimental research on insulation properties of C6F12O/N2 and C6F12O/CO2 gas mixtures

Content Provider	IET Digital Library
Author	Tian, Shuangshuang Zhang, Xiaoxing Xiao, Song Deng, Zaitao Li, Yi Tang, Ju
Abstract	This study investigates the insulation performance of the new environmental friendly insulation gas C6F12O mixed with N2 and CO2 under the AC frequency voltage under 0.10–0.30 MPa. Firstly, the mixing ratio of C6F12O in the mixed gas is discussed by the gas phase state equation. The breakdown voltage of C6F12O gas mixtures under quasi-uniform electric field and the initial voltage of partial discharge in the highly non-uniform field are measured by the experimental method, and the insulation characteristics of SF6 gas mixtures are compared. The self-recovery performance of the gas mixture is analysed as well. Experimental results show that the mixing ratio of C6F12O is lower than 7% under 0.10 MPa, such that the operation requirements of the equipment can be satisfied. The breakdown voltage of 3% C6F12O gas mixtures is the same as that of 10% SF6 gas mixtures. The partial discharge inception voltage of 6% C6F12O gas mixtures is close to that of 10% SF6 gas mixtures. After 100 times of breakdown, the breakdown voltage of C6F12O gas mixtures does not decrease. Compared with N2, the breakdown voltage of C6F12O mixed with CO2 shows a more dispersive trend.
Starting Page	417
Ending Page	422
Page Count	6
ISSN	17518687
Volume Number	13
e-ISSN	17518695
Issue Number	Issue 3, Feb (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/13/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2018.5474
Journal	IET Generation, Transmission & Distribution
Publisher Date	2018-11-15
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC Frequency Voltage Breakdown Voltage Carbon Compounds CO2 Dielectric Breakdown And Discharges Electric Breakdown Environmental Friendly Insulation Gas C Experimental Method Gas Insulated Switchgear Gas Mixture Gas Mixtures Gas Phase State Equation Gaseous Insulation, Breakdown And Discharges Insulation Property Mixed Gas Mixing Ratio N2 Nitrogen Nitrogen-carbon Dioxide Gas Mixtures Partial Discharge Inceprion Voltage Partial Discharges Pressure 0.1 MPa to 0.3 MPa Self-recovery Performance SF6 Insulation Sulfuric Fluoride Gas Mixtures
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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