环保绝缘介质C4F7N/CO2/O2混合气体的放电分解特性

doi:10.19595/j.cnki.1000-6753.tces.190846

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摘要近年来,环保绝缘介质C₄F₇N/CO₂混合气体凭借优良的绝缘性能得到了广泛关注。为避免C₄F₇N/CO₂混合气体在高能放电后出现碳析出,需要加入O₂作为第二种缓冲气体。然而目前鲜有针对C₄F₇N/CO₂/O₂混合气体放电分解特性的相关报道。该文通过一系列工频击穿放电实验,利用气相色谱质谱联用仪（GC-MS）对含不同体积分数O₂的C₄F₇N/CO₂/O₂混合气体的放电分解特性进行了分析。研究发现,C₄F₇N/CO₂/O₂混合气体多次击穿后分解的主要产物有CF₄、C₂F₆、C₃F₈、CF₃CN、C₂F₅CN、C₃F₆、CO、COF₂、C₂N₂等,其中CF₄、CO、C₂F₆的生成量相对较高。当O₂的体积分数从0%增加到2%时,上述分解产物的生成量均出现了一定程度的下降;随着O₂的体积分数进一步升高,主要分解产物中CF₄、CO的生成量会持续下降,相反COF₂的生成量会增加,而其他分解产物的含量变化趋势不是很明显。

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关键词 ：环保气体, C₄F₇N混合气体, 分解特性, 介电强度

Abstract：In recent years, environmental-friendly insulating medium C₄F₇N/CO₂ gas mixture have received extensive attention due to its excellent dielectric strength. In order to mitigate carbon creation after high-energy discharge, it is necessary to add O₂ as the second buffer gas. However, there are few reports on the discharge decomposition characteristics of C₄F₇N/CO₂/O₂ gas mixture. In this paper, a series of AC breakdown discharge experiments were carried out and the gas chromatography-mass spectrometry (GC-MS) was used to analyze the discharge decomposition characteristics of C₄F₇N/CO₂/O₂ gas mixture with different O₂ volume fractions. It is found that the main decomposition products of C₄F₇N/CO₂/O₂ gas mixture after multiple breakdowns are CF₄, C₂F₆, C₃F₈, CF₃CN, C₂F₅CN, C₃F₆, CO, COF₂, C₂N₂, etc., and the production content of CF₄, CO and C₂F₆ is relatively higher. When the O₂ volume fraction increases from 0% to 2%, the content of the decomposition products mentioned above will decrease to some extent;as the O₂ volume fraction further increases, the content of CF₄ and CO will continue decreasing, and the content of COF₂ produced will increase, while the content of the other products mentioned above will not change significantly.

Key words： Green gas C₄F₇N gas mixture decomposition characteristics dielectric strength

收稿日期: 2019-07-11 出版日期: 2020-01-17

PACS:

TM835

基金资助:深圳供电局有限公司科技项目资助（090000KK52170114）

通讯作者: 张晓星男,1972年生,教授,博士生导师,研究方向为电气设备在线监测与故障、绝缘状态评估、新型传感器技术以及SF₆环保替代气体等。E-mail：xiaoxing.zhang@outlook.com

作者简介: 陈琪男,1995年生,硕士研究生,研究方向为电气设备在线监测及SF₆环保替代气体等。E-mail：chenqi95@whu.edu.cn

引用本文:

陈琪, 张晓星, 李祎, 吕启深, 唐峰. 环保绝缘介质C₄F₇N/CO₂/O₂混合气体的放电分解特性[J]. 电工技术学报, 2020, 35(1): 80-87. Chen Qi, Zhang Xiaoxing, Li Yi, Lü Qishen, Tang Feng. The Discharge Decomposition Characteristics of Environmental-Friendly Insulating Medium C₄F₇N/CO₂/O₂ Gas Mixture. Transactions of China Electrotechnical Society, 2020, 35(1): 80-87.

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[1] 赵智大. 高电压技术 [M]. 2版. 北京:中国电力出版社, 2006.
[2] Xiao Dengming.Gas discharge and gas insulation[M]. Berlin: Springer-Verlag, 2016.
[3] 林林, 陈庆国, 程嵩, 等. 基于密度泛函理论的SF₆潜在可替代性气体介电性能分析[J]. 电工技术学报, 2018, 33(18): 206-212.
Lin Lin, Chen Qingguo, Cheng Song, et al.The analysis of SF₆ potential alternative gas dielectric strength based on density functional theory[J]. Transactions of China Electrotechnical Society, 2018, 33(18): 206-212.
[4] 张晓星, 田双双, 肖淞, 等. SF₆替代气体研究现状综述[J]. 电工技术学报, 2018, 33(12): 2883-2893.
Zhang Xiaoxing, Tian Shuangshuang, Xiao Song, et al.A review study of SF₆ substitute gases[J]. Transactions of China Electrotechnical Society, 2018, 33(12): 2883-2893.
[5] Romero A, Rácz L, Mátrai A, et al.A review of sulfur-hexafluoride reduction by dielectric coatings and alternative gases[C]//2017 IEEE 6th International Youth Conference on Energy(IYCE), Budapest, Hungary, 2017: 1-5.
[6] 颜湘莲, 高克利, 郑宇, 等. SF₆ 混合气体及替代气体研究进展[J]. 电网技术, 2018, 42(6): 1837-1844.
Yan Xianglian, Gao Keli, Zheng Yu, et al.Progress of gas mixture and alternative gas of SF₆[J]. Power System Technology, 2018, 42(6): 1837-1844.
[7] 张晓星, 陈琪, 张季, 等. 高气压下环保型C₄F₇N/ CO₂混合气体工频击穿特性[J]. 电工技术学报, 2019, 34(13): 2839-2845.
Zhang Xiaoxing, Chen Qi, Zhang Ji, et al.Power frequency breakdown characteristics of environmental friendly C₄F₇N/CO₂ gas mixtures under high pressure conditions[J]. Transactions of China Electrotechnical Society, 2019, 34(13): 2839-2845.
[8] Wang Cong, Cheng Yi, Tu Youping, et al.Characteristics of C₃F₇CN/CO₂ as an alternative to SF₆ in HVDC-GIL systems[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(4): 1351-1356.
[9] 屠幼萍, 艾昕, 成毅, 等. C₃F₇CN/N₂混合气体的直流击穿特性[J]. 电工技术学报, 2018, 33(22): 49-55.
Tu Youping, Ai Xin, Cheng Yi, et al.DC breakdown characteristics of C₃F₇CN/N₂ gas mixtures[J]. Transactions of China Electrotechnical Society, 2018, 33(22): 49-55.
[10] Zhao Hu, Li Xingwen, Tang Nian, et al.Dielectric properties of fluoronitriles/CO₂ and SF₆/N₂ mixtures as a possible SF₆-substitute gas[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(4): 1332-1339.
[11] Zhang Boya, Uzelac N, Cao Yang.Fluoronitrile/CO₂ mixture as an eco-friendly alternative to SF₆ for medium voltage switchgears[J]. IEEE Transactions on Dielectrics and Electrical Insulation, 2018, 25(4): 1340-1350.
[12] 徐建源, 刘振祥, 夏亚龙, 等. 1 100kV GIL快速接地开关分闸过程C₄F₇N/CO混合气体介质绝缘强度计算分析[J]. 高电压技术, 2018, 44(10): 3125-3134.
Xu Jianyuan, Liu Zhenxiang, Xia Yalong, et al.Calculation and analysis on dielectric strength of C₄F₇N/CO₂ in 1 100kV GIL HSGS during the opening process[J]. High Voltage Engineering, 2018, 44(10): 3125-3134.
[13] 赵明月, 韩冬, 荣文奇, 等. 电晕放电下全氟异丁腈(C₄F₇N)与空气混合气体的分解产物规律及其形成原因分析[J]. 高电压技术, 2018, 44(10): 3174-3182.
Zhao Mingyue, Han Dong, Rong Wenqi, et al.Analysis of decomposition by-products and its formation mechanism of C₄F₇N/air mixed gases under AC corona discharge[J]. High Voltage Engineering, 2018, 44(10): 3174-3182.
[14] Zhang Xiaoxing, Li Yi, Chen Dachang, et al.Reactive molecular dynamics study of the decomposition mechanism of the environmentally friendly insulating medium C₃F₇CN[J]. RSC Advances, 2017, 80(7): 50663-50671.
[15] Kieffel Y, Irwin T, Ponchon P, et al.Green gas to replace SF₆ in electrical grids[J]. IEEE Power and Energy Magazine, 2016, 14(2): 32-39.
[16] Wiener J, Hinrichsen V, Goll F, et al.Dielectric properties of fluorine containing insulating gases for gas insulated systems[C]//The 20th International Symposium on High Voltage Engineering, Buenos Aires, Argentina, 2017.
[17] Meyer F, Huguenot F, Kieffell Y, et al.Application of Fluoronitrile/CO₂/O₂ mixtures in high voltage products to lower the environmental footprint[C]// International Council on Large Electric Systems, Paris, 2018: D1-201.
[18] 李旭东, 周伟, 屠幼萍, 等. 0.1-0.25MPa气压下二元混合气体SF₆-N₂和SF₆-CO₂的击穿特性[J]. 电网技术, 2012, 36(4): 260-264.
Li Xudong, Zhou Wei, Tu Youping, et al.Breakdown characteristics of binary gas mixtures SF₆-N₂ and SF₆-CO₂ under 0.1~0.25MPa atmosphere pressures[J]. Power System Technology, 2012, 36(4): 260-264.
[19] Zhang Xiaoxing, Chen Qi, Zhang Ji, et al.Experimental study on power frequency breakdown characteristics of C₄F₇N/CO₂ gas mixture under quasi-homogeneous electric field[J]. IEEE Access, 2019, 7: 19100-19108.
[20] Yogeswari S, Ramalakshmi S, Neelavathy R, et al.Identification and comparative studies of different volatile fractions from Monochaetia kansensis by GCMS[J]. Global Journal of Pharmacology, 2012, 6(2): 65-71.
[21] Beroual A, Haddad A M.Recent advances in the quest for a new insulation gas with a low impact on the environment to replace sulfur hexafluoride (SF₆) gas in high-voltage power network applications[J]. Energies, 2017, 10(8): 1216.
[22] 中国科学院上海有机化学研究所.化学专业数据库[DB/OL].http://www.organchem.csdb.cn.[1978-2019].
[23] Preve C, Piccoz D, Maladen R.Validation method and comparison of SF₆ alternative gases[C]//International Conference on Electricity Distribution, CIGRE 2016, Paris, 2016: D1-205.
[24] 宫勋. 不同气压下火花放电对六氟化硫的分解特性的影响研究[D]. 重庆: 重庆大学, 2016.
[25] Fu Yuwei, Yang Aijun, Wang X H, et al.Theoretical study of the decomposition mechanism of C₄F₇N[J]. Journal of Physics D: Applied Physics, 2019, 52: 24503-24517.
[26] Wu Yi, Wang Chunlin, Sun Hao, et al.Properties of C₄F₇N-CO₂ thermal plasmas: thermodynamic properties, transport coefficients and emission coefficients[J]. Journal of Physics D: Applied Physics, 2018, 51(15): 155206.