Analysis on Temperature Distribution and Current-Carrying Capacity of GIL Filled with Fluoronitriles-CO₂ Gas Mixture

Geng Chen; Youping Tu; Cong Wang; Yi Cheng; Han Jiang; Hongyang Zhou; Hua Jin

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자료유형: 학술저널

저자정보: Geng Chen (North China Electric Power University) Youping Tu (North China Electric Power University) Cong Wang (North China Electric Power University) Yi Cheng (North China Electric Power University) Han Jiang (North China Electric Power University) Hongyang Zhou (North China Electric Power University) Hua Jin (North China Electric Power University)

저널정보: 대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.13 No.6

발행연도: 2018.11

수록면: 2,402 - 2,411 (10page)

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Fluoronitriles-CO₂ gas mixtures are promising alternatives to SF6 in environmentallyfriendly gas-insulated transmission lines (GILs). Insulating gas heat transfer characteristics are of major significance for the current-carrying capacity design and operational state monitoring of GILs. In this paper, a three-dimensional calculation model was established for a GIL using the thermal-fluid coupled finite element method. The calculated results showed close agreement with experimentally measured data. The temperature distribution of a GIL filled with the Fluoronitriles-CO₂ mixture was obtained and compared with those of GILs filled with CO₂ and SF6. Furthermore, the effects of the mixture ratio of the component gases and the gas pressure on the temperature rise and current-carrying capacity of the GIL were analyzed. Results indicated that the heat transfer performance of the Fluoronitriles-CO₂ gas mixture was better than that of CO₂ but worse than that of SF₆. When compared with SF6, use of the Fluoronitriles-CO₂ gas mixture caused a reduction in the GIL’s current-carrying capacity. In addition, increasing the Fluoronitriles gas component ratio or increasing the pressure of the insulating gas mixture could improve the heat dissipation and current-carrying capacity of the GIL. These research results can be used to design environmentally-friendly GILs containing Fluoronitriles-CO₂ gas mixtures.

#Gas-insulated transmission line #Fluoronitriles-CO₂ gas mixture #Thermal field calculation #Current-carrying capacity

참고문헌 (23)

참고문헌 신청

H. Koch, Gas-insulated Transmission Lines (GIL). USA: A John Wiley & Sons, Ltd. 2012, pp. 1-5. J. L. He, “Ideas on building underground energy complex passage,” Southern Power System Technology, vol. 10, no. 3, pp. 66-70, Mar. 2016. (in Chinese) M. Khalifaed, High Voltage Engineering. New York: Marcel Dekker, Inc., 1990. H. Sadakuni, K. Sasamori, H. Hama, and K. Inami, “Insulation and current carrying design for GIS,” Japan Inst. Elec. Eng., vol. 9, pp. 33-42, Mar. 1996. Y. Kieffel, A. Girodet, F. Biquez, Ph. Ponchon, J. Owens, M. Costello, M. Bulinski, R. Van San, K. Werner, “SF6 alternative development for high voltage switchgear,” in Electrical Insulation Conference, 2015, pp. 379-383.

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