SF_6/N_2混合气体中金属微粒对GIL盆式绝缘子表面电荷积聚特性的影响
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摘要
在0.5MPa 20%SF_6/N_2混合气体中,利用静电探头和电荷反演算法测量并计算了金属微粒附着时盆式绝缘子的表面电荷分布,并研究电压类型和金属微粒长度对表面电荷分布影响。结果表明,金属微粒将加剧绝缘子表面电荷积聚并严重畸变金属微粒处电场。在直流电压下绝缘子表面电荷存在三种积聚形态,即同极性电极注入电荷、金属微粒附近双极性电荷及随机分布电荷,而在雷电冲击电压下绝缘子表面仅存在金属微粒附近双极性电荷及随机分布电荷。当金属微粒超过5mm时,直流电压下注入电荷区的存在将导致金属微粒附近积聚电荷量减少,雷电冲击电压下随机分布电荷的存在也将导致金属微粒附近积聚电荷量减少。
The surface charge distribution of spacer with metal particles attached in 0.5 MPa 20%SF6/N2 mixture was measured by an electrostatic probe and calculated with an inverse algorithm, and the influence of applied voltage type and metal particle length were studied. The results show that metal particles can increase the surface charge accumulation and greatly distort the local electric field. Under DC voltage the surface charge distribution can be divided into three different patterns, including the homo-charges by electrode injection, bipolar charges around the metal particles and random charges. However, under lightning impulse voltage, there are just bipolar charges around the metal particles and random charges existing. When the metal particle is longer than 5 mm, under DC voltage, the accumulated charge near the metal particles will decrease for the existing of charge injection region, and under lightning impulse voltage, the existing of randomly distributed charge will result in the same phenomenon.
The surface charge distribution of spacer with metal particles attached in 0.5 MPa 20%SF6/N2 mixture was measured by an electrostatic probe and calculated with an inverse algorithm, and the influence of applied voltage type and metal particle length were studied. The results show that metal particles can increase the surface charge accumulation and greatly distort the local electric field. Under DC voltage the surface charge distribution can be divided into three different patterns, including the homo-charges by electrode injection, bipolar charges around the metal particles and random charges. However, under lightning impulse voltage, there are just bipolar charges around the metal particles and random charges existing. When the metal particle is longer than 5 mm, under DC voltage, the accumulated charge near the metal particles will decrease for the existing of charge injection region, and under lightning impulse voltage, the existing of randomly distributed charge will result in the same phenomenon.
引文
[1]肖登明,阎究敦.气体绝缘输电线路(GIL)的应用及发展[J].高电压技术,2017,43(3):699-707.Xiao Dengming,Yan Jiudun.Application and development of gas insulated transmission line(GIL)[J].High Voltage Engineering,2017,43(3):699-707.
[2]李冰,肖登明,赵谡,等.第二代气体绝缘输电线路的温升数值计算[J].电工技术学报,2017,32(13):271-276.Li Bing,Xiao Dengming,Zhao Su,et al.Temperature rise numerical calculation of the second generation gas insulated transmission line[J].Transactions of China Electrotechnical Society,2017,32(13):271-276.
[3]鲁杨飞,李庆民,刘涛,等.高频电压下表面电荷分布对沿面放电发展过程的影响[J].电工技术学报,2018,33(13):3059-3070.Lu Yangfei,Li Qingmin,Liu Tao,et al.Effect of surface charge on the surface discharge evolution for polyimide under high frequency voltage[J].Transactions of China Electrotechnical Society,2018,33(13):3059-3070.
[4]王有元,李熙,李原龙,等.交直流复合电压下铜颗粒在油中的分布及对绝缘油击穿特性的影响[J/OL].电工技术学报,2018,DOI:10.19595/j.cnki.1000-6753.tces.171751.Wang Youyuan,Li Xi,Li Yuanlong,et al.Distribution of copper particle in insulating oil and its influence on breakdown strength of insulating oil under combined AC and DC voltage[J/OL].Transactions of China Electrotechnical Society,2018,DOI:10.19595/j.cnki.1000-6753.tces.171751.
[5]Zhang B,Zhang G,Wang Q,et al.Suppression of surface charge accumulation on Al2O3-filled epoxy resin insulator under dc voltage by direct fluorination[J].AIP Advances,2015,5(12):127207.
[6]Du B X,Li A,Li J.Effects of AC and pulse voltage combination on surface charge accumulation and decay of epoxy resin[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(4):2368-2376.
[7]Qi B,Li C R,Hao Z,et al.Surface discharge initiated by immobilized metallic particles attached to gas insulated substation insulators:process and features[J].IEEE Transactions on Dielectrics and Electrical Insulation,2011,18(3):792-800.
[8]Radwan R M,Abou-Elyazied A M.Effect of spacer's defects and conducting particles on the electric field distribution along their surfaces in GIS[J].IEEETransactions on Dielectrics and Electrical Insulation,2007,14(6):1484-1491.
[9]Hoshina Y,Yasuoka T,Takei M.Influence of tiny metal particles on charge accumulation phenomena of GIS model spacer in high-pressure SF6 gas[J].IEEETransactions on Dielectrics and Electrical Insulation,2013,20(5):1895-1901.
[10]王健,李伯涛,李庆民,等.直流GIL中线形金属微粒对柱式绝缘子表面电荷积聚的影响[J].电工技术学报,2016,31(15):213-222.Wang Jian,Li Botao,Li Qingmin,et al.Impact of linear metal particle on surface charge accumulation of post insulator within DC GIL[J].Transactions of China Electrotechnical Society,2016,31(15):213-222.
[11]李伯涛,王健,张圣富,等.直流GIL中附着导电微粒对绝缘子表面电荷积聚特性的影响分析[J].高压电器,2017,53(7):80-86.Li Botao,Wang Jian,Zhang Shengfu,et al.Influence of the DC-GIL conductive adherent particles on the charge accumulation of insulator surface[J].High Voltage Apparatus,2017,53(7):80-86.
[12]王志远,王健,李庆民,等.直流GIL内金属微粒对表面电荷积聚影响的三维仿真及实验研究[J].中国电机工程学报,2016,36(24):6718-6726,6925.Wang Zhiyuan,Wang Jian,Li Qingmin,et al.3Dsimulation and experimental study of metal particles’effect in DC GIL on surface charge accumulation[J].Proceedings of the CSEE,2016,36(24):6178-6726,6925.
[13]Schurer R,Feser K.The accumulation of surface charge due to a conducting particle on a spacer[C]//Eleventh International Symposium on High Voltage Engineering,London,UK,1999,4:59-62.
[14]Imano A M.The influence of the dielectric strength of the N2/SF6-insulation by conducting particle on the spacer surface[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,10(3):483-490.
[15]Feng W,Yuchang Q,Pfeiffer W,et al.Insulator surface charge accumulation under impulse voltage[J].IEEE Transactions on Dielectrics and Electrical Insulation,2004,11(5):847-854.
[16]Morcos M M,Ward S A,Anis H,et al.Insulation integrity of GIS/GITL systems and management of particle contamination[J].IEEE Electrical Insulation Magazine,2000,16(5):25-37.
[17]Deng J,Mu H,Zhang G,et al.Residual charge distribution of surface leader discharge under positive impulse voltage[J].IEEE Transactions on Plasma Science,2013,41(4):999-1004.
[18]邓军波,王涵,薛建议,等.基于静电探头法的表面电荷密度分布及电场分布的改进反演算法研究[J].中国电机工程学报,2018,38(4):1239-1247,1301.Deng Junbo,Wang Han,Xue Jianyi,et al.Improved reverse algorithm of surface charge density distribution and electric field distribution based on electrostatic probe[J].Proceedings of the CSEE,2018,38(4):1239-1247,1301.
[19]Gonzalez R C,Woods R E.Digital image processing(third edition)[M].Qiuqi R,译.Beijing:Publishing House of Electronics Industry,2011.
[20]Deng J,Pu L,Mu H,et al.Two-dimensional residual charge density distribution measurement of surface leader[J].Journal of Electrostatics,2013,71(4):739-745.
[21]Akiko K,Shigemitsu O,Kunihiko H.Residual charge distribution of positive surface streamer[J].Journal of Physics D:Applied Physics,2009,42(9):095209.
[22]Hansen P C.The use of the L-curve in the regularization of discrete ill-posed problems[J].SIAM J Sci Comput,1993,14:1487-1503.
[23]Hansen P C.Analysis of discrete Ill-posed problems by means of the L-curve[J].Siam Review,1992,34(4):561-580.
[24]Okabe S,Kumada A.Measurement methods of accumulated electric charges on spacer in gas insulated switchgear[J].IEEE Transactions on Power Delivery,2007,22(3):1547-1556.
[25]张博雅,王强,祁喆,等.直流电压下聚合物表面电荷测量方法及积聚特性[J].中国电机工程学报,2016,36(24):6664-6674,6919.Zhang Boya,Wang Qiang,Qi Zhe,et al.Measurement method and accumulation characteristics of surface charge distribution on polymeric material under DC voltage[J].Proceedings of the CSEE,2016,36(24):6664-6674,6919.
[26]王邸博,唐炬,刘凯.直流高压下GIS支柱绝缘子表面电荷积聚特性[J].高电压技术,2015,41(9):3073-3081.Wang Dibo,Tang Ju,Liu Kai.Charge accumulation on post insulator surface under HVDC in GIS[J].High Voltage Engineering,2015,41(9):3073-3081.
[27]钟力生,李盛涛,徐传骧.工程电介质物理及介电现象[M].西安:西安交通大学出版社,2013.
[28]Du Boxue,Gao Yu.Gamma-ray irradiation inhibiting surface charge accumulation on polyethylene[J].IEEE Transactions on Dielectrics and Electrical Insulation,2009,16(3):876-881.
[2]李冰,肖登明,赵谡,等.第二代气体绝缘输电线路的温升数值计算[J].电工技术学报,2017,32(13):271-276.Li Bing,Xiao Dengming,Zhao Su,et al.Temperature rise numerical calculation of the second generation gas insulated transmission line[J].Transactions of China Electrotechnical Society,2017,32(13):271-276.
[3]鲁杨飞,李庆民,刘涛,等.高频电压下表面电荷分布对沿面放电发展过程的影响[J].电工技术学报,2018,33(13):3059-3070.Lu Yangfei,Li Qingmin,Liu Tao,et al.Effect of surface charge on the surface discharge evolution for polyimide under high frequency voltage[J].Transactions of China Electrotechnical Society,2018,33(13):3059-3070.
[4]王有元,李熙,李原龙,等.交直流复合电压下铜颗粒在油中的分布及对绝缘油击穿特性的影响[J/OL].电工技术学报,2018,DOI:10.19595/j.cnki.1000-6753.tces.171751.Wang Youyuan,Li Xi,Li Yuanlong,et al.Distribution of copper particle in insulating oil and its influence on breakdown strength of insulating oil under combined AC and DC voltage[J/OL].Transactions of China Electrotechnical Society,2018,DOI:10.19595/j.cnki.1000-6753.tces.171751.
[5]Zhang B,Zhang G,Wang Q,et al.Suppression of surface charge accumulation on Al2O3-filled epoxy resin insulator under dc voltage by direct fluorination[J].AIP Advances,2015,5(12):127207.
[6]Du B X,Li A,Li J.Effects of AC and pulse voltage combination on surface charge accumulation and decay of epoxy resin[J].IEEE Transactions on Dielectrics and Electrical Insulation,2016,23(4):2368-2376.
[7]Qi B,Li C R,Hao Z,et al.Surface discharge initiated by immobilized metallic particles attached to gas insulated substation insulators:process and features[J].IEEE Transactions on Dielectrics and Electrical Insulation,2011,18(3):792-800.
[8]Radwan R M,Abou-Elyazied A M.Effect of spacer's defects and conducting particles on the electric field distribution along their surfaces in GIS[J].IEEETransactions on Dielectrics and Electrical Insulation,2007,14(6):1484-1491.
[9]Hoshina Y,Yasuoka T,Takei M.Influence of tiny metal particles on charge accumulation phenomena of GIS model spacer in high-pressure SF6 gas[J].IEEETransactions on Dielectrics and Electrical Insulation,2013,20(5):1895-1901.
[10]王健,李伯涛,李庆民,等.直流GIL中线形金属微粒对柱式绝缘子表面电荷积聚的影响[J].电工技术学报,2016,31(15):213-222.Wang Jian,Li Botao,Li Qingmin,et al.Impact of linear metal particle on surface charge accumulation of post insulator within DC GIL[J].Transactions of China Electrotechnical Society,2016,31(15):213-222.
[11]李伯涛,王健,张圣富,等.直流GIL中附着导电微粒对绝缘子表面电荷积聚特性的影响分析[J].高压电器,2017,53(7):80-86.Li Botao,Wang Jian,Zhang Shengfu,et al.Influence of the DC-GIL conductive adherent particles on the charge accumulation of insulator surface[J].High Voltage Apparatus,2017,53(7):80-86.
[12]王志远,王健,李庆民,等.直流GIL内金属微粒对表面电荷积聚影响的三维仿真及实验研究[J].中国电机工程学报,2016,36(24):6718-6726,6925.Wang Zhiyuan,Wang Jian,Li Qingmin,et al.3Dsimulation and experimental study of metal particles’effect in DC GIL on surface charge accumulation[J].Proceedings of the CSEE,2016,36(24):6178-6726,6925.
[13]Schurer R,Feser K.The accumulation of surface charge due to a conducting particle on a spacer[C]//Eleventh International Symposium on High Voltage Engineering,London,UK,1999,4:59-62.
[14]Imano A M.The influence of the dielectric strength of the N2/SF6-insulation by conducting particle on the spacer surface[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,10(3):483-490.
[15]Feng W,Yuchang Q,Pfeiffer W,et al.Insulator surface charge accumulation under impulse voltage[J].IEEE Transactions on Dielectrics and Electrical Insulation,2004,11(5):847-854.
[16]Morcos M M,Ward S A,Anis H,et al.Insulation integrity of GIS/GITL systems and management of particle contamination[J].IEEE Electrical Insulation Magazine,2000,16(5):25-37.
[17]Deng J,Mu H,Zhang G,et al.Residual charge distribution of surface leader discharge under positive impulse voltage[J].IEEE Transactions on Plasma Science,2013,41(4):999-1004.
[18]邓军波,王涵,薛建议,等.基于静电探头法的表面电荷密度分布及电场分布的改进反演算法研究[J].中国电机工程学报,2018,38(4):1239-1247,1301.Deng Junbo,Wang Han,Xue Jianyi,et al.Improved reverse algorithm of surface charge density distribution and electric field distribution based on electrostatic probe[J].Proceedings of the CSEE,2018,38(4):1239-1247,1301.
[19]Gonzalez R C,Woods R E.Digital image processing(third edition)[M].Qiuqi R,译.Beijing:Publishing House of Electronics Industry,2011.
[20]Deng J,Pu L,Mu H,et al.Two-dimensional residual charge density distribution measurement of surface leader[J].Journal of Electrostatics,2013,71(4):739-745.
[21]Akiko K,Shigemitsu O,Kunihiko H.Residual charge distribution of positive surface streamer[J].Journal of Physics D:Applied Physics,2009,42(9):095209.
[22]Hansen P C.The use of the L-curve in the regularization of discrete ill-posed problems[J].SIAM J Sci Comput,1993,14:1487-1503.
[23]Hansen P C.Analysis of discrete Ill-posed problems by means of the L-curve[J].Siam Review,1992,34(4):561-580.
[24]Okabe S,Kumada A.Measurement methods of accumulated electric charges on spacer in gas insulated switchgear[J].IEEE Transactions on Power Delivery,2007,22(3):1547-1556.
[25]张博雅,王强,祁喆,等.直流电压下聚合物表面电荷测量方法及积聚特性[J].中国电机工程学报,2016,36(24):6664-6674,6919.Zhang Boya,Wang Qiang,Qi Zhe,et al.Measurement method and accumulation characteristics of surface charge distribution on polymeric material under DC voltage[J].Proceedings of the CSEE,2016,36(24):6664-6674,6919.
[26]王邸博,唐炬,刘凯.直流高压下GIS支柱绝缘子表面电荷积聚特性[J].高电压技术,2015,41(9):3073-3081.Wang Dibo,Tang Ju,Liu Kai.Charge accumulation on post insulator surface under HVDC in GIS[J].High Voltage Engineering,2015,41(9):3073-3081.
[27]钟力生,李盛涛,徐传骧.工程电介质物理及介电现象[M].西安:西安交通大学出版社,2013.
[28]Du Boxue,Gao Yu.Gamma-ray irradiation inhibiting surface charge accumulation on polyethylene[J].IEEE Transactions on Dielectrics and Electrical Insulation,2009,16(3):876-881.