Insulation Performance and Electrical Field Sensitivity Properties of HFO-1336mzz(E)/CO 2 : A New Eco-friendly Gas Insulating Medium

This paper investigates the AC insulation properties and explores the influence of electric field inhomogeneity on the breakdown voltage of HFO-1336mzz(E)/CO 2 gas mixture. The electrical field sensitivity of HFO-1336mzz(E)/CO 2 and SF 6 is further compared. It is found that the insulation performan...

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Bibliographic Details
Published inIEEE transactions on dielectrics and electrical insulation Vol. 28; no. 6; pp. 1938 - 1948
Main Authors Xiao, Song, Han, Pu, Li, Yi, Li, Zhen, Ye, Fanchao, Li, Yalong, Tang, Ju, Xia, Yalong, Zhang, Xiaoxing
Format Journal Article
LanguageEnglish
Published New York The Institute of Electrical and Electronics Engineers, Inc. (IEEE) 01.12.2021
Subjects
Breakdown
Carbon dioxide
Electric fields
Electric potential
Gas mixtures
Gas pressure
Inhomogeneity
Insulation
Pressure effects
Sensitivity
Synergistic effect
Voltage
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Summary:This paper investigates the AC insulation properties and explores the influence of electric field inhomogeneity on the breakdown voltage of HFO-1336mzz(E)/CO 2 gas mixture. The electrical field sensitivity of HFO-1336mzz(E)/CO 2 and SF 6 is further compared. It is found that the insulation performance of HFO-1336mzz(E)/CO 2 mixture with 25–30% HFO-1336mzz(E) can reach up to 75-85% of SF 6 under the quasi-uniform electric field and there is a favorable positive synergistic effect between HFO-1336mzz(E) and CO 2 . The breakdown voltage of HFO-1336mzz(E)/CO 2 gas mixture demonstrates a “hump” effect with gas pressure under the highly non-uniform electric field and its sensitivity to the electric field inhomogeneity is significantly lower than that of SF 6 . The insulation performance of HFO-1336mzz(E)/CO 2 with HFO-1336mzz(E) content higher than 20% reaches 0.99–1.05 times that of SF 6 under highly non-uniform electric field. The AC breakdown voltage of HFO-1336mzz(E)/CO 2 gas mixture and SF 6 decreases first and then increases with the electric field inhomogeneity (f), demonstrating a “U-shaped” like curve and finally tends to be stable. The related results of this paper systematically reveal the AC insulation properties of HFO-1336mzz(E)/CO 2 gas mixture and provide an important reference for its engineering application.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2021.009720