C_4F_7N/N_2混合气体在极不均匀电场下的局部放电特性Partial Discharge Characteristics of C_4F_7N/N_2 Mixture in Highly Non-uniform Electric Field
张晓星;叶凡超;张国治;田双双;李祎;张季;
摘要(Abstract):
C_4F_7N是一种极具应用潜力的SF_6替代气体。试验研究了环保型气体绝缘介质C_4F_7N/N_2混合气体的局部放电特性,测试了混合气体的局部放电起始电压并与纯SF_6气体进行了对比,探究了混合比、气压对混合气体绝缘性能的影响情况。研究发现含C_4F_7N_2%~12%的C_4F_7N/N_2混合气体的PDIV-、PDIV+随气压的增长而增大,但绝缘性能均弱于相同条件下纯SF_6。相同气压下C_4F_7N/N_2混合气体的绝缘性能随混合比的增加而增加;低气压下增加混合比能够显著提升混合气体的绝缘性能,高气压(0.5~0.6 MPa)下混合气体的相对绝缘性能随混合比的增加呈现饱和增长趋势。相关研究成果为C_4F_7N/N_2混合气体的工程应用提供了重要参考。
关键词(KeyWords): SF_6替代气体;C_4F_7N/N_2;局部放电;相对绝缘性能
基金项目(Foundation):
作者(Author): 张晓星;叶凡超;张国治;田双双;李祎;张季;
Email:
DOI: 10.13335/j.1000-3673.pst.2019.1856
参考文献(References):
- [1]张晓星,田双双,肖淞,等.SF_(66)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 SF_6 substitute gases[J].Transactions of China Electrotechnical Socety,2018,33(12):2883-2893(in Chinese).
- [2]颜湘莲,高克利,郑宇,等.SF_(66)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 SF_6[J].Power System Technology,2018,42(6):1837-1844(in Chinese).
- [3]王小华,傅熊雄,韩国辉,等.C_5F_(10)O与CO_2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 C_5F_(10)O/CO_2 gas mixture[J].High Voltage Engineering,2017,43(3):715-720(in Chinese).
- [4]张英,陈琪,张晓星,等.C_3F_7CN/CO_2混合气体在准均匀电场中的绝缘性能[J].高电压技术,2018,44(10):3158-3164.Zhang Ying,Chen Qi,Zhang Xiao xing,et al.Insulation performance of C_3F_7CN/CO_2 Gas mixtures in quasi-uniform electric field[J].High Voltage Engineering,2018,44(10):3158-3164(in Chinese).
- [5]Rabie M,Franck C M.Assessment of eco-friendly gases for electrical insulation to replace the most potent industrial greenhouse gas SF_6[J].Environmental science&technology,2018,52(2):369-380.
- [6]Kieffel Y,Irwin T,Ponchon P,et al.Green gas to replace SF_6 in electrical grids[J].IEEE Power and Energy Magazine,2016,14(2):32-39.
- [7]李祎,张晓星,肖淞,等.环保型绝缘介质C_5F_(10)O放电分解特性[J].中国电机工程学报,2018,38(14):4298-4306.Li Yi,Zhang Xiaoxing,Xiao Song,et al.Study on the discharge de-composition characteristics of an environmental-friendly insulating medium C_5F_(10)O[J].Proceeding of the CSEE,2018,38(14):4298-4306(in Chinese).
- [8]Rogelj J,Den Elzen M,Hohne N,et al.Paris agreement climate proposals need a boost to keep warming well below 2℃[J].Nature,2016,534(7609):631.
- [9]Kieffel Y.Characteristics of_g3-an alternative to SF_6[C]//2016 IEEE International Conference on Dielectrics(ICD).Montpellier,France:IEEE,2016.
- [10]Kieffel Y,Biquez F,Ponchon P,et al.SF_6 alternative development for high voltage switchgears[C]//Power&Energy Society GeneralMeeting,2015 IEEE.Denver,CO,USA:IEEE,2015:1-5.
- [11]Nechmi H E,Beroual A,Girodet A,et al.Fluoronitriles/CO_2 gas mixture as promising substitute to SF_6 for insulation in high voltage applications[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(5):2587-2593.
- [12]Nechmi H E,Beroual A,Girodet A,et al.Effective ionization coefficients and limiting field strength of fluoronitriles-CO_2 mixtures[J].IEEE Transactions on Dielectrics and Electrical Insulation,2017,24(2):886-892.
- [13]Hopf A,Britton J A,Rossner M,et al.Dielectric strength of SF_6substitutes,alternative insulation gases and PFC-gas-mixtures[C]//Electrical Insulation Conference(EIC),2017 IEEE.Baltimore,MD,USA:IEEE,2017:209-212.
- [14]李兴文,邓云坤,姜旭,等.环保气体C_4F_7N和C_5F_(10)O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 enviroment-friendly gases mixtures of C_4F_7N and C_5F_(10)O with CO_2[J].High Voltage Engineering,2017,43(3):708-714(in Chinese).
- [15]Owens J G.Greenhouse gas emission reductions through use of a sustainable alternative to SF_6[C]//IEEE Electrical Insulation Conference.Montreal,QC,Canada:IEEE,2016:535-538.
- [16]Tang J,Liu F,Zhang X,et al.Partial discharge recognition through an analysis of SF_6 decomposition products part 1:decomposition charac-teristics of SF_6 under four different partial discharges[J].IEEE Transactions on Dielectrics&Electrical Insulation,2012,19(1):29-36.
- [17]Tang J,Liu F,Meng Q,et al.Partial discharge recognition through an analysis of SF_6 decomposition products part 2:feature extraction and decision tree-based pattern recognition[J].IEEE Transactions on Dielectrics&Electrical Insulation,2012,19(1):37-44.
- [18]Standard I E C.High-voltage test techniques:partial discharge measurements[J].IEC-60270,2000.
- [19]张强,李成榕,刘齐,等.变压器升高座内部套管局部放电特高频信号传播特征[J].电网技术,2017,41(4):328-333Zhang Qiang,Li Chengrong,Liu Qi,et al.Research on propagation of UHF signals by partial discharges in ascending flanged base[J].Power System Technology,2017,41(4):328-333(in Chinese).
- [20]田双双,张晓星,肖淞,等.工频交流电压下C_(66)F_(10)O与N_2混合气体的击穿特性和分解特性[J].中国电机工程学报,2018,38(10):3125-3132.Tian Shuangshuang,Zhang Xiao xing,Xiao Song,et al.Breakdown characteristics and decomposition characteristics of C_6F_(12)O and N_2mixed gas under AC voltage[J].Proceedings of the CSEE,2018,38(10):3125-3132(in Chinese).