N_2环境下绝缘子闪络特性的试验研究
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摘要
目前广泛应用于气体绝缘领域的SF_6是一种强温室气体,N_2以其取材方便、价格便宜、环境友好、低电压等级下的优良绝缘性能等优点成为新型环保替代气体。文中对N_2环境下的绝缘子闪络特性进行了试验研究,测量了不同条件下的雷电冲击50%闪络电压,结果显示:随着气压的增加,绝缘子闪络电压近似线性增加;随着绝缘子表面粗糙度的上升,闪络电压先下降后上升;随着伞裙数目的增加,绝缘子正极性闪络电压变化不明显,负极性则先下降后上升。文中的实验数据和结论为N_2在气体绝缘中的应用提供了参考。
SF_6 has been widely used in area of gas insulation,however,it has great greenhouse effect.N_2 becomes an alternative gas because of its abundant resources,low price,environmental friendliness and good insulation performance. In this paper,flashover characteristics of insulator with N_2 are tested and 50% flashover voltage under lightning impulse is measured. The results show that flashover voltage increases approximately linearly with the increase of the pressure.With the increase of the surface roughness of the insulator,the flashover voltage decreases first and then increases. With the increase of umbrellas' number,the flashover voltage under positive lightning impulse doesn't change basically,while the negative flashover voltage first decreases a lot and then rises. The results and conclusions in this paper can provide a reference for the application of N_2.
SF_6 has been widely used in area of gas insulation,however,it has great greenhouse effect.N_2 becomes an alternative gas because of its abundant resources,low price,environmental friendliness and good insulation performance. In this paper,flashover characteristics of insulator with N_2 are tested and 50% flashover voltage under lightning impulse is measured. The results show that flashover voltage increases approximately linearly with the increase of the pressure.With the increase of the surface roughness of the insulator,the flashover voltage decreases first and then increases. With the increase of umbrellas' number,the flashover voltage under positive lightning impulse doesn't change basically,while the negative flashover voltage first decreases a lot and then rises. The results and conclusions in this paper can provide a reference for the application of N_2.
引文
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[14]邓云坤,肖登明,陈炯.CF3I-N2混合气体作为SF6替代气体用于GIS/C-GIS的绝缘性能分析(英文)[J].高电压技术2013,39(9):2288-2293.DENG Yunkun,XIAO Dengming,CHEN Jiong.Insulation performance of CF3I-N2 gas mixtures as alternative for SF6in GIS/C-GIS[J].High Voltage Engineering,2013,39(9):2288-2293.
[15]邢卫军,张国强,李康,等.C4F8/N2混合气体局部放电特性实验研究[J].中国电机工程学报,2011,31(7):119-124.XING Weijun,ZHANG Guoqiang,LI Kang,et al.Experimental study of partial discharge characteristics of C4F8/N2 mixtures[J].Proceedings of the CSEE,2011,31(7):119-124.
[16]ZHAO H,LI X,LIN H.Insulation characteristics of c-C4F8-N2 and CF3I-N2 mixtures as possible substitutes for SF6[J].IEEE Transactions on Power Delivery,2017,32(1):254-262.
[17]SAITOH H,MORITA K,KIKKAWA T,et al.Impulse partial discharge and breakdown characteristics of rod-plane gaps in air and N2 gases[J].Electrical Engineering in Japan,2004,148(3):36-43.
[18]PECASTAING L,REESS T,PAILLOL J,et al.Electrical breakdown studies of pressurised Nitrogen in non uniform fields[J].European Physical Journal Applied Physics,2001,16(1):59-69.
[19]汪沨,肖晓林,张宪标,等.基于PIC法SF6/N2混合气体中绝缘子沿面放电特性研究[J].电工技术学报,2011,26(8):220-226.WANG Feng,XIAO Xiaolin,ZHANG Xianbiao,et al.Research on the insulator surface discharge characteristics in SF6/N2 gas mixture using PIC method[J].Transactions of China Electrotechnical Society,2011,26(8):220-226.
[20]周远翔,孙清华,李光范,等.空间电荷对油纸绝缘击穿和沿面闪络的影响[J].电工技术学报,2011,26(2):27-33.ZHOU Yuanxiang,SUN Qinghua,LI Guangfan,et al.Effects of space charge on breakdown and creeping discharge of oil-paper insulation[J].Transactions of China Electrotechnical Society,2011,26(2):27-33.
[21]郎艳,王艺博,苏国强,等.表面粗糙度对有机玻璃材料真空沿面闪络特性的影响[J].高电压技术,2015,41(2):474-478.LANG Yan,WANG Yibo,SU Guoqiang,et al.Influence of surface roughness on vacuum flashover characteristics of PMMA[J].High Voltage Engineering,2015,41(2):474-478.
[2]CHRISTOPHOROU L G,VAN BRUNT R J.SF6 insulation:Possible greenhouse problems and solutions[M].Gaithersburg,USA:NIST,1995:3-10.
[3]REILLY J,PRINN R,HARNISCH J,et al.Multi-gas assessment of the Kyoto Protocol[J].Nature,1999,6753(401):549-555.
[4]赵虎,李兴文,贾申利.300 K下不同比例CF3I-N2和CF3I-CO2混合气体绝缘特性的计算分析[J].高电压技术,2013,39(7):1692-1697.ZHAO Hu,LI Xingwen,JIA Shenli.Calculation of the insulation properties of different CF3I-N2 and CF3I-CO2 mixtures at300 K[J].High Voltage Engineering,2013,39(7):1692-1697.
[5]TARASOVA O,KOIDE H,DLUGOKENCKY E.The state of greenhouse gases in the atmosphere using global observations through 2014[C]//EGU General Assembly Conference.[S.l.]:EGU General Assembly Conference Abstracts,2016:16.
[6]ZHANG X,ZHOU J,TANG J,et al.Experimental research on the partial discharge insulation properties of CF3I/CO2and CF3I/N2 gas mixtures[J].Proceedings of the CSEE,2014,34(12):1948-1956.
[7]满林坤,肖登明.SF6替代气体中绝缘子沿面闪络特性研究现状[J].电工电气,2016(9):1-6.MAN Linkun,XIAO Dengming.Research status of insulators along-surface flashover property in SF6 alternative gas[J].Electrotechnics Electric,2016(9):1-6.
[8]WOO S Y,JEONG D H,SEO K B,et al.A study on dielectric strength and insulation property of SF/N mixtures for GIS[J].Journal of International Council on Electrical Engineering,2014,2(1):104-109.
[9]DENG Y,LI B,XIAO D.Analysis of the insulation characteristics of C3F8,gas mixtures with N2,and CO2,using boltzmann equation method[J].Japanese Journal of Applied Physics,2015,22(6):3253-3259.
[10]DENG Yunkun,LI Bing,XIAO Dengming.Analysis of the insulation characteristics of C3F8 gas mixtures with N2 and CO2 using boltzmann equation method[J].IEEE Transactions on Dielectrics and Electrical Insulation,2015,22(6):3253-3259.
[11]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.
[12]孙鹏程,王帮田,李炎光,等.N2绝缘介质在中压开关领域的应用试验研究[J].机电设备,2015(4):43-46.SUN Pengcheng,WANG Bangtian,LI Yanguang,et al.Experiment research on application of insulation nitrogen in field of medium voltage[J].Mechanical and Electrical Equipment,2015(4):43-46.
[13]陈庆国,肖登明,邱毓昌.SF6/N2混合气体的放电特性[J].西安交通大学学报,2001,35(4):338-342.CHEN Qingguo,XIAO Dengming,QIU Yuchang.Discharge characteristics of SF6/N2 gas mixtures[J].Journal of Xi’an Jiaotong University,2001,35(4):338-342.
[14]邓云坤,肖登明,陈炯.CF3I-N2混合气体作为SF6替代气体用于GIS/C-GIS的绝缘性能分析(英文)[J].高电压技术2013,39(9):2288-2293.DENG Yunkun,XIAO Dengming,CHEN Jiong.Insulation performance of CF3I-N2 gas mixtures as alternative for SF6in GIS/C-GIS[J].High Voltage Engineering,2013,39(9):2288-2293.
[15]邢卫军,张国强,李康,等.C4F8/N2混合气体局部放电特性实验研究[J].中国电机工程学报,2011,31(7):119-124.XING Weijun,ZHANG Guoqiang,LI Kang,et al.Experimental study of partial discharge characteristics of C4F8/N2 mixtures[J].Proceedings of the CSEE,2011,31(7):119-124.
[16]ZHAO H,LI X,LIN H.Insulation characteristics of c-C4F8-N2 and CF3I-N2 mixtures as possible substitutes for SF6[J].IEEE Transactions on Power Delivery,2017,32(1):254-262.
[17]SAITOH H,MORITA K,KIKKAWA T,et al.Impulse partial discharge and breakdown characteristics of rod-plane gaps in air and N2 gases[J].Electrical Engineering in Japan,2004,148(3):36-43.
[18]PECASTAING L,REESS T,PAILLOL J,et al.Electrical breakdown studies of pressurised Nitrogen in non uniform fields[J].European Physical Journal Applied Physics,2001,16(1):59-69.
[19]汪沨,肖晓林,张宪标,等.基于PIC法SF6/N2混合气体中绝缘子沿面放电特性研究[J].电工技术学报,2011,26(8):220-226.WANG Feng,XIAO Xiaolin,ZHANG Xianbiao,et al.Research on the insulator surface discharge characteristics in SF6/N2 gas mixture using PIC method[J].Transactions of China Electrotechnical Society,2011,26(8):220-226.
[20]周远翔,孙清华,李光范,等.空间电荷对油纸绝缘击穿和沿面闪络的影响[J].电工技术学报,2011,26(2):27-33.ZHOU Yuanxiang,SUN Qinghua,LI Guangfan,et al.Effects of space charge on breakdown and creeping discharge of oil-paper insulation[J].Transactions of China Electrotechnical Society,2011,26(2):27-33.
[21]郎艳,王艺博,苏国强,等.表面粗糙度对有机玻璃材料真空沿面闪络特性的影响[J].高电压技术,2015,41(2):474-478.LANG Yan,WANG Yibo,SU Guoqiang,et al.Influence of surface roughness on vacuum flashover characteristics of PMMA[J].High Voltage Engineering,2015,41(2):474-478.