C_4F_7N/CO_2混合气体在均匀和极不均匀电场下的工频绝缘性能
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摘要
因C_4F_7N/CO_2混合气体的绝缘强度高,全球变暖潜力值小,作为SF_6的潜在替代气体备受关注。在均匀电场与极不均匀电场下通过工频击穿试验研究气压、混合比例对C_4F_7N/CO_2混合气体工频击穿电压的影响。结果表明:0.1～0.4 MPa气压范围内,C_4F_7N/CO_2混合气体在均匀电场下击穿电压随气压线性增加,在极不均匀电场下出现明显"驼峰"。均匀电场下7%C_4F_7N/93%CO_2混合气体的绝缘强度约为SF_6的0.8倍。C_4F_7N占比为9%～13%的C_4F_7N/CO_2混合气体具有与SF_6相当的工频绝缘强度。在极不均匀电场下,C_4F_7N占比为7%～13%的C_4F_7N/CO_2混合气体工频击穿电压依然可达到SF_6的0.79～0.86倍。通过与SF_6对比工频耐压,得出C_4F_7N占比为7%～13%的C_4F_7N/CO_2混合气体具有替代SF_6气体的潜力。
C_4F_7 N/CO_2 mixture gas, which possesses a high dielectric strength and low coefficient of the greenhouse effect,has attracted attention as a potential alternative gas to SF_6. We studied the effects of pressure and the ratio of mixture on the power frequency breakdown voltage of the C_4F_7 N/CO_2 through power-frequency breakdown tests under uniform and extremely non-uniform electric field. Results show that the breakdown voltage of C_4F_7 N/CO_2 mixtures increases linearly with the gas pressure under the uniform electric field in the pressure range of 0.1～0.4 MPa, and the N-curve characteristic of breakdown voltage appears under the extremely non-uniform electric field. The dielectric strength of7%C_4F_7 N/93%CO_2 mixtures under a uniform electric field is about 0.8 times that of SF_6. The C_4F_7 N/CO_2 mixed gas which contains 9%～13% C_4F_7 N has a power frequency insulation strength equivalent to that of SF_6. Under an extreme non-uniform electric field, the breakdown voltage of the 7%～13% C_4F_7 N/CO_2 mixtures can still reach 0.79～0.86 times that of SF_6. Comparison of the power frequency breakdown voltage with the breakdown voltage of SF_6 reveals that the ratio of 7% to 13% of C_4F_7 N/CO_2 gas mixture has the potential to replace SF_6 gas.
C_4F_7 N/CO_2 mixture gas, which possesses a high dielectric strength and low coefficient of the greenhouse effect,has attracted attention as a potential alternative gas to SF_6. We studied the effects of pressure and the ratio of mixture on the power frequency breakdown voltage of the C_4F_7 N/CO_2 through power-frequency breakdown tests under uniform and extremely non-uniform electric field. Results show that the breakdown voltage of C_4F_7 N/CO_2 mixtures increases linearly with the gas pressure under the uniform electric field in the pressure range of 0.1～0.4 MPa, and the N-curve characteristic of breakdown voltage appears under the extremely non-uniform electric field. The dielectric strength of7%C_4F_7 N/93%CO_2 mixtures under a uniform electric field is about 0.8 times that of SF_6. The C_4F_7 N/CO_2 mixed gas which contains 9%～13% C_4F_7 N has a power frequency insulation strength equivalent to that of SF_6. Under an extreme non-uniform electric field, the breakdown voltage of the 7%～13% C_4F_7 N/CO_2 mixtures can still reach 0.79～0.86 times that of SF_6. Comparison of the power frequency breakdown voltage with the breakdown voltage of SF_6 reveals that the ratio of 7% to 13% of C_4F_7 N/CO_2 gas mixture has the potential to replace SF_6 gas.
引文
[1]周文俊,乔胜亚,李丽,等.GIS中盆式绝缘子沿面放电的新特征气体CS2[J].高电压技术,2015,41(3):848-856.ZHOU Wenjun,QIAO Shengya,LI Li,et al.Creeping discharge monitoring of epoxy spacers in GIS using a new target gas CS2[J].High Voltage Engineering,2015,41(3):848-856.
[2]唐念,乔胜亚,李丽,等.HF和H2S作为气体绝缘组合电器绝缘缺陷诊断特征气体的有效性[J].电工技术学报,2017,32(19):202-211.TANG Nian,QIAO Shengya,LI Li,et al.Validity of HF and H2S as target gases of insulation monitoring in gas insulated switchgear[J].Transactions of China Electrotechnical Society,2017,32(19):202-211.
[3]郭璨,张乔根,游浩洋,等.工频下电场不均匀度对SF6/N2混合气体放电特性的影响与临界半径现象[J].高电压技术,2017,43(3):780-787.GUO Can,ZHANG Qiaogen,YOU Haoyang,et al.Influence of electric field non-uniformity on discharge characteristics and phenomenon of critical radius in SF6/N2 gas mixtures under power frequency voltage[J].High Voltage Engineering,2017,43(3):780-787.
[4]周文俊,乔胜亚,郑宇,等.基于特征气体COS和CS2的GIS内环氧树脂固体介质绝缘状态监测[J].高电压技术,2017,43(8):2551-2557.ZHOU Wenjun,QIAO Shengya,ZHENG Yu,et al.Insulation condition monitoring of epoxy resins solid dielectric in GIS using characteristic gases COS and CS2[J].High Voltage Engineering,2017,43(8):2551-2557.
[5]覃兆宇,郑宇,周文俊,等.针-板电场中SF6分解气体的含量比值特性及吸附剂的影响[J].高电压技术,2017,43(9):2919-2926.QIN Zhaoyu,ZHENG Yu,ZHOU Wenjun,et al.Characteristics of contents ratio of SF6 decomposed gases in point-plate electric field and influence of absorbents[J].High Voltage Engineering,2017,43(9):2919-2926.
[6]乔胜亚,周文俊,唐念,等.不同吸附剂对GIS局部放电特征气体变化规律的影响[J].电工技术学报,2016,31(3):113-120.QIAO Shengya,ZHOU Wenjun,TANG Nian,et al.Effects of different adsorbents on the evolving law of target gases under partial discharges in GIS[J].Transactions of China Electrotechnical Society,2016,31(3):113-120.
[7]郑宇,周文俊,喻剑辉,等.环保型绝缘混合气体的应用特性分析[J].广东电力,2018,31(8):3-8.ZHENG Yu,ZHOU Wenjun,YU Jianhui,et al.Analysis on application characteristics of environmental insulated mixed gases[J].Guangdong Electric Power,2018,31(8):3-8.
[8]胡世卓,周文俊,喻剑辉.定量结构-性质关系模型在SF6替代气体研究中的应用[J].广东电力,2018,31(8):9-17.HU Shizhuo,ZHOU Wenjun,YU Jianhui.Application of quantitative structure-property relationship model in research on SF6 alternative gases[J].Guangdong Electric Power,2018,31(8):9-17.
[9]OKABE S,WADA J,UETA G.Dielectric properties of gas mixtures with C3F8/C2F6 and N2/CO2[J].IEEE Transactions on Dielectrics and Electrical Insulation,2015,22(4):2108-2116.
[10]WADA J,UETA G,OKABE S,et al.Dielectric properties of gas mixtures with per-fluorocarbon gas and gas with low liquefaction temperature[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(2):838-847.
[11]ZHAO H,LI X,ZHU K,et al.Study of the arc interruption performance of SF6/CO2 mixtures as a substitute for SF6[J].IEEETransactions on Dielectrics and Electrical Insulation,2016,23(5):2657-2667.
[12]李兴文,赵虎.SF6替代气体的研究进展综述[J].高电压技术,2016,42(6):1695-1701.LI Xingwen,ZHAO Hu.Review of research progress in SF6 substitute gases[J].High Voltage Engineering,2016,42(6):1695-1701.
[13]覃兆宇,郑宇,卫李静,等.低温下SF6/N2混合气体的雷电冲击绝缘特性[J].高电压技术,2017,43(12):3907-3913.QIN Zhaoyu,ZHENG Yu,WEI Lijing,et al.Impulse insulation property of SF6/N2 mixture under low temperatures[J].High Voltage Engineering,2017,43(12):3907-3913.
[14]CHEN L,GRIFFITHS H,HADDAD A,et al.Breakdown of CF3I gas and its mixtures under lightning impulse in coaxial-gil geometry[J].IEEE Transactions on Dielectrics&Electrical Insulation,2016,23(4):1959-1967.
[15]张晓星,周君杰,唐炬,等.CF3I/CO2与CF3I/N2两种混合气体局部放电绝缘特性的试验研究[J].中国电机工程学报,2014,34(12):1948-1956.ZHANG Xiaoxing,ZHOU Junjie,TANG Ju,et al.Experimental research on the partial discharge insulation properties of CF3I/CO2 and CF3I/N2 gas mixtures[J].Proceedings of the CSEE,2014,34(12):1948-1956.
[16]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.
[17]LI X,ZHAO H,JIA S,et al.Prediction of the dielectric strength for c-C4F8 mixtures with CF4,CO2,N2,O2 and air by boltzmann equation analysis[J].Journal of Physics D-Applied Physics,2014,47(42):425204.
[18]张然,王珏,李璟,等.替代SF6的环境友好混合气体c-C4F8/N2绝缘特性[J].高电压技术,2017,43(2):414-419.ZHANG Ran,WANG Jue,LI Jing,et al.Insulation characteristics of environmentally friendly mix gas c-C4F8/N2 substituting SF6[J].High Voltage Engineering,2017,43(2):414-419.
[19]王小华,傅熊雄,韩国辉,等.C5F10O/CO2混合气体的绝缘性能[J].高电压技术,2017,43(3):715-720.WANG Xiaohua,FU Xiongxiong,HAN Guohui,et al.Insulation performance of C5F10O/CO2 gas mixture[J].High Voltage Engineering,2017,43(3):715-720.
[20]STOLLER P C,DOIRON C B,TEHLAR D,et al.Mixtures of CO2and C5F10O perfluoroketone for high voltage applications[J].IEEETransactions on Dielectrics&Electrical Insulation,2017,24(5):2712-2721.
[21]ZHANG X,TIAN S,XIAO S,et al.Insulation strength and decomposition characteristics of a C6F12O and N2 gas mixture[J].Energies,2017,10(8):1170-1181.
[22]OKABE S,UETA G,UTSUMI T,et al.Insulation characteristics of GIS insulators under lightning impulse with DC voltage superimposed[J].IEEE Transactions on Dielectrics&Electrical Insulation,2015,22(6):3269-3277.
[23]OWENS J G.Greenhouse gas emission reductions through use of a sustainable alternative to SF6[C]∥IEEE Electrical Insulation Conference.Montréal,Qc,Canada:IEEE,2016:535-538.
[24]NECHMI H E,BEROUAL A,GIRODET A,et al.Fluoronitriles/CO2gas mixture as promising substitute to SF6 for insulation in high voltage applications[J].IEEE Transactions on Dielectrics&Electrical Insulation,2016,23(5):2587-2593.
[25]李兴文,邓云坤,姜旭,等.环保气体C4F7N和C5F10O与CO2混合气体的绝缘性能及其应用[J].高电压技术,2017,43(3):708-714.LI Xingwen,DENG Yunkun,JIANG Xu,et al.Insulation performance and application of environment-friendly gases mixtures of C4F7N and C5F10O with CO2[J].High Voltage Engineering,2017,43(3):708-714.
[26]冯浩然.SF6可替代气体基本电离参数仿真及典型气体击穿特性研究[D].哈尔滨:哈尔滨理工大学,2016.FENG Haoran.Simulation of the substitutes for SF6 and breakdown characteristics of typical gas[D].Harbin,China:Harbin University of Science and Technology,2016.
[27]肖淞,张晓星,戴琦伟,等.CF3I/N2混合气体在不同电场下的工频击穿特性试验研究[J].中国电机工程学报,2016,36(22):6276-6285.XIAO Song,ZHANG Xiaoxing,DAI Qiwei,et al.Experimental research of CF3I/N2 gas mixtures on power frequency breakdown performances under different electric field[J].Proceedings of the CSEE,2016,36(22):6276-6285.
[28]KIEFFEL Y,IRWIN T,PONCHON P,et al.Green gas to replace SF6in electrical grids[J].IEEE Power&Energy Magazine,2016,14(2):32-39.
[29]KIEFFEL Y,BIQUEZ F.SF6 alternative development for high voltage switchgears[C]∥Electrical Insulation Conference.Seattle,USA:IEEE,2015:379-383.
[30]KIEFFEL Y.Characteristics of g3-an Alternative to SF6[C]∥IEEEInternational Conference on Electricity Distribution.Glasgow,UK:IEEE,2016:880-884.
[2]唐念,乔胜亚,李丽,等.HF和H2S作为气体绝缘组合电器绝缘缺陷诊断特征气体的有效性[J].电工技术学报,2017,32(19):202-211.TANG Nian,QIAO Shengya,LI Li,et al.Validity of HF and H2S as target gases of insulation monitoring in gas insulated switchgear[J].Transactions of China Electrotechnical Society,2017,32(19):202-211.
[3]郭璨,张乔根,游浩洋,等.工频下电场不均匀度对SF6/N2混合气体放电特性的影响与临界半径现象[J].高电压技术,2017,43(3):780-787.GUO Can,ZHANG Qiaogen,YOU Haoyang,et al.Influence of electric field non-uniformity on discharge characteristics and phenomenon of critical radius in SF6/N2 gas mixtures under power frequency voltage[J].High Voltage Engineering,2017,43(3):780-787.
[4]周文俊,乔胜亚,郑宇,等.基于特征气体COS和CS2的GIS内环氧树脂固体介质绝缘状态监测[J].高电压技术,2017,43(8):2551-2557.ZHOU Wenjun,QIAO Shengya,ZHENG Yu,et al.Insulation condition monitoring of epoxy resins solid dielectric in GIS using characteristic gases COS and CS2[J].High Voltage Engineering,2017,43(8):2551-2557.
[5]覃兆宇,郑宇,周文俊,等.针-板电场中SF6分解气体的含量比值特性及吸附剂的影响[J].高电压技术,2017,43(9):2919-2926.QIN Zhaoyu,ZHENG Yu,ZHOU Wenjun,et al.Characteristics of contents ratio of SF6 decomposed gases in point-plate electric field and influence of absorbents[J].High Voltage Engineering,2017,43(9):2919-2926.
[6]乔胜亚,周文俊,唐念,等.不同吸附剂对GIS局部放电特征气体变化规律的影响[J].电工技术学报,2016,31(3):113-120.QIAO Shengya,ZHOU Wenjun,TANG Nian,et al.Effects of different adsorbents on the evolving law of target gases under partial discharges in GIS[J].Transactions of China Electrotechnical Society,2016,31(3):113-120.
[7]郑宇,周文俊,喻剑辉,等.环保型绝缘混合气体的应用特性分析[J].广东电力,2018,31(8):3-8.ZHENG Yu,ZHOU Wenjun,YU Jianhui,et al.Analysis on application characteristics of environmental insulated mixed gases[J].Guangdong Electric Power,2018,31(8):3-8.
[8]胡世卓,周文俊,喻剑辉.定量结构-性质关系模型在SF6替代气体研究中的应用[J].广东电力,2018,31(8):9-17.HU Shizhuo,ZHOU Wenjun,YU Jianhui.Application of quantitative structure-property relationship model in research on SF6 alternative gases[J].Guangdong Electric Power,2018,31(8):9-17.
[9]OKABE S,WADA J,UETA G.Dielectric properties of gas mixtures with C3F8/C2F6 and N2/CO2[J].IEEE Transactions on Dielectrics and Electrical Insulation,2015,22(4):2108-2116.
[10]WADA J,UETA G,OKABE S,et al.Dielectric properties of gas mixtures with per-fluorocarbon gas and gas with low liquefaction temperature[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(2):838-847.
[11]ZHAO H,LI X,ZHU K,et al.Study of the arc interruption performance of SF6/CO2 mixtures as a substitute for SF6[J].IEEETransactions on Dielectrics and Electrical Insulation,2016,23(5):2657-2667.
[12]李兴文,赵虎.SF6替代气体的研究进展综述[J].高电压技术,2016,42(6):1695-1701.LI Xingwen,ZHAO Hu.Review of research progress in SF6 substitute gases[J].High Voltage Engineering,2016,42(6):1695-1701.
[13]覃兆宇,郑宇,卫李静,等.低温下SF6/N2混合气体的雷电冲击绝缘特性[J].高电压技术,2017,43(12):3907-3913.QIN Zhaoyu,ZHENG Yu,WEI Lijing,et al.Impulse insulation property of SF6/N2 mixture under low temperatures[J].High Voltage Engineering,2017,43(12):3907-3913.
[14]CHEN L,GRIFFITHS H,HADDAD A,et al.Breakdown of CF3I gas and its mixtures under lightning impulse in coaxial-gil geometry[J].IEEE Transactions on Dielectrics&Electrical Insulation,2016,23(4):1959-1967.
[15]张晓星,周君杰,唐炬,等.CF3I/CO2与CF3I/N2两种混合气体局部放电绝缘特性的试验研究[J].中国电机工程学报,2014,34(12):1948-1956.ZHANG Xiaoxing,ZHOU Junjie,TANG Ju,et al.Experimental research on the partial discharge insulation properties of CF3I/CO2 and CF3I/N2 gas mixtures[J].Proceedings of the CSEE,2014,34(12):1948-1956.
[16]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.
[17]LI X,ZHAO H,JIA S,et al.Prediction of the dielectric strength for c-C4F8 mixtures with CF4,CO2,N2,O2 and air by boltzmann equation analysis[J].Journal of Physics D-Applied Physics,2014,47(42):425204.
[18]张然,王珏,李璟,等.替代SF6的环境友好混合气体c-C4F8/N2绝缘特性[J].高电压技术,2017,43(2):414-419.ZHANG Ran,WANG Jue,LI Jing,et al.Insulation characteristics of environmentally friendly mix gas c-C4F8/N2 substituting SF6[J].High Voltage Engineering,2017,43(2):414-419.
[19]王小华,傅熊雄,韩国辉,等.C5F10O/CO2混合气体的绝缘性能[J].高电压技术,2017,43(3):715-720.WANG Xiaohua,FU Xiongxiong,HAN Guohui,et al.Insulation performance of C5F10O/CO2 gas mixture[J].High Voltage Engineering,2017,43(3):715-720.
[20]STOLLER P C,DOIRON C B,TEHLAR D,et al.Mixtures of CO2and C5F10O perfluoroketone for high voltage applications[J].IEEETransactions on Dielectrics&Electrical Insulation,2017,24(5):2712-2721.
[21]ZHANG X,TIAN S,XIAO S,et al.Insulation strength and decomposition characteristics of a C6F12O and N2 gas mixture[J].Energies,2017,10(8):1170-1181.
[22]OKABE S,UETA G,UTSUMI T,et al.Insulation characteristics of GIS insulators under lightning impulse with DC voltage superimposed[J].IEEE Transactions on Dielectrics&Electrical Insulation,2015,22(6):3269-3277.
[23]OWENS J G.Greenhouse gas emission reductions through use of a sustainable alternative to SF6[C]∥IEEE Electrical Insulation Conference.Montréal,Qc,Canada:IEEE,2016:535-538.
[24]NECHMI H E,BEROUAL A,GIRODET A,et al.Fluoronitriles/CO2gas mixture as promising substitute to SF6 for insulation in high voltage applications[J].IEEE Transactions on Dielectrics&Electrical Insulation,2016,23(5):2587-2593.
[25]李兴文,邓云坤,姜旭,等.环保气体C4F7N和C5F10O与CO2混合气体的绝缘性能及其应用[J].高电压技术,2017,43(3):708-714.LI Xingwen,DENG Yunkun,JIANG Xu,et al.Insulation performance and application of environment-friendly gases mixtures of C4F7N and C5F10O with CO2[J].High Voltage Engineering,2017,43(3):708-714.
[26]冯浩然.SF6可替代气体基本电离参数仿真及典型气体击穿特性研究[D].哈尔滨:哈尔滨理工大学,2016.FENG Haoran.Simulation of the substitutes for SF6 and breakdown characteristics of typical gas[D].Harbin,China:Harbin University of Science and Technology,2016.
[27]肖淞,张晓星,戴琦伟,等.CF3I/N2混合气体在不同电场下的工频击穿特性试验研究[J].中国电机工程学报,2016,36(22):6276-6285.XIAO Song,ZHANG Xiaoxing,DAI Qiwei,et al.Experimental research of CF3I/N2 gas mixtures on power frequency breakdown performances under different electric field[J].Proceedings of the CSEE,2016,36(22):6276-6285.
[28]KIEFFEL Y,IRWIN T,PONCHON P,et al.Green gas to replace SF6in electrical grids[J].IEEE Power&Energy Magazine,2016,14(2):32-39.
[29]KIEFFEL Y,BIQUEZ F.SF6 alternative development for high voltage switchgears[C]∥Electrical Insulation Conference.Seattle,USA:IEEE,2015:379-383.
[30]KIEFFEL Y.Characteristics of g3-an Alternative to SF6[C]∥IEEEInternational Conference on Electricity Distribution.Glasgow,UK:IEEE,2016:880-884.