离子流场模型中高压直流导线表面粗糙系数的表征方法
|
摘要
高压直流输电线路电晕放电会产生离子流场问题。裸露的导线受到风沙及摩擦磨损,导致表面粗糙度增加,更易发生电晕放电。因此,导线表面微观几何形态是影响直流输电线路离子流场的重要因素。为此,利用砂粒对导线表面进行处理,模拟风沙对输电线路的影响,制备了粗糙度不同的导线样品。基于光切法,对导线样品表面微观几何形态进行了分析,得到了导线样品粗糙度。用有限元计算了不同表面微观几何形态的导线表面场强,当粗糙度增大时,导线表面最大场强增大,尖刺状凸起增多。并利用电晕笼测量获得了导线样品起晕电压,建立了导线表面粗糙度与Peek公式中粗糙系数的关联关系。随着粗糙度的增大,粗糙系数减小。进而将此关联关系应用于离子流场计算中,利用测量得到的表面粗糙度表征了粗糙系数,使得离子流场计算中对导线表面微观几何形态的表述更具科学依据。
The corona discharge of HVDC transmission lines can generate ion flow field. The surface roughness of HVDC transmission line increases because of the sand blown by the wind and friction, which leads to the decrease of the corona initial voltage. Therefore, the surface micro-geometry of a transmission line has a direct effect on the ion flow field.In this paper, wire samples with different roughness were treated with sand particles to simulate the influence of sand blown by wind on transmission lines. Based on the light sectioning, the micro morphology of surface of a wire sample was analyzed, and the roughness of wire samples was obtained. The electric field of wire surface with different surface micro geometry was calculated by FEM. When the roughness increases, the maximum electric field of the wire surface will increase, and the number of spiked protrusions will increase. Moreover, the initial voltage of corona of a wire sample was measured by a corona cage method. The correlation between surface roughness of wire and roughness coefficient in Peek formula was established. As the roughness increases, the roughness factor will decrease. The correlation is applied to the ion flow field calculation. Furthermore, the roughness coefficient was characterized by the measured surface roughness to ensure the expression of the micro-geometry of the wire surface more reliable.
The corona discharge of HVDC transmission lines can generate ion flow field. The surface roughness of HVDC transmission line increases because of the sand blown by the wind and friction, which leads to the decrease of the corona initial voltage. Therefore, the surface micro-geometry of a transmission line has a direct effect on the ion flow field.In this paper, wire samples with different roughness were treated with sand particles to simulate the influence of sand blown by wind on transmission lines. Based on the light sectioning, the micro morphology of surface of a wire sample was analyzed, and the roughness of wire samples was obtained. The electric field of wire surface with different surface micro geometry was calculated by FEM. When the roughness increases, the maximum electric field of the wire surface will increase, and the number of spiked protrusions will increase. Moreover, the initial voltage of corona of a wire sample was measured by a corona cage method. The correlation between surface roughness of wire and roughness coefficient in Peek formula was established. As the roughness increases, the roughness factor will decrease. The correlation is applied to the ion flow field calculation. Furthermore, the roughness coefficient was characterized by the measured surface roughness to ensure the expression of the micro-geometry of the wire surface more reliable.
引文
[1]赵畹君.高压直流输电工程技术[M].北京:中国电力出版社,2011.ZHAO Wanjun.HVDC Transmission Engineering Technology[M].Beijing,China:China Electric Power Press,2011.
[2]律方成,刘宏宇,阴凯,等.直流GIL不均匀场中金属微粒运动的数值模拟及放电特性分析[J].中国电机工程学报,2017,37(10):2798-2806.LüFangcheng,LIU Hongyu,YIN Kai,et al.Numerical simulation and discharge characteristic analysis of metallic particle motion in non-uniform electric field of DC GIL[J].Proceedings of the CSEE,2017,37(10):2798-2806.
[3]LI X,CUI X,LU T,et al.Experimental investigation on correlation of corona-induced vibration and audible noise from DC conductor[J].High Voltage,2016,1(3):115-121.
[4]汤广福,王高勇,贺之渊,等.张北500 kV直流电网关键技术与设备研究[J].高电压技术,2018,44(7):2097-2106.TANG Guangfu,WANG Gaoyong,HE Zhiyuan,et al.Research on key technology and equipment for Zhangbei 500 kV DC grid[J].High Voltage Engineering,2018,44(7):2097-2106.
[5]陈杉杉,贺恒鑫,邹妍晖,等.雷云电场作用下±1100kV特高压直流输电线路电晕空间电荷分布特征的仿真研究[J].高电压技术,2018,44(4):1367-1376.CHEN Binbin,HE Hengxin,ZOU Yanhui,et al.Distribution characteristics of corona space charge generated from the±1 100 k VUHVDC overhead transmission line under the thundercloud electric field[J].High Voltage Engineering,2018,44(4):1367-1376.
[6]王振国,卢铁兵,刘阳.邻近交流线路时直流导线电晕放电引起的无线电干扰数值模拟[J].高电压技术,2017,43(3):1000-1005.WANG Zhenguo,LU Tiebing,LIU Yang.Numerical simulation of radio interference caused by DC corona being adjacent to ACtransmission lines[J].High Voltage Engineering,2017,43(3):1000-1005.
[7]马爱清,陈健.考虑雨天的直流±800 kV与交流500 kV并行输电线路3维混合电场及静电感应分析[J].高电压技术,2017,43(7):2114-2121.MA Aiqing,CHEN Jian.Analysis on three-dimensional hybrid electric field and related electrostatic induction effect of±800 kV DC and 500kV AC parallel transmission line considering rainy days[J].High Voltage Engineering,2017,43(7):2114-2121.
[8]王东来,卢铁兵,陈博,等.±1 100 k V特高压直流输电线路邻近树木时合成电场建模计算与特性研究[J].电网技术,2017,41(11):3441-3447.WANG Donglai,LU Tiebing,CHEN Bo,et al.Modelling and characteristic research of total electric field around trees near±1 100 k VUHVDC transmission lines[J].Power System Technology,2017,41(11):3441-3447.
[9]王东来,卢铁兵,崔翔,等.两回高压直流输电线路交叉跨越时地面合成电场计算[J].电工技术学报,2017,32(2):77-84.WANG Donglai,LU Tiebing,CUI Xiang,et al.Simulation of total electric field under the crossing of two circuit HVDC transmission lines[J].Transactions of China Electrotechnical Society,2017,32(2):77-84.
[10]LU Tiebing,XIONG Gaolin,CUI Xiang,et al.Analysis of corona onset electric field considering the effect of space charges[J].IEEETransactions on Magnetics,2011,47(5):1390-1393
[11]BIAN Xingming,CHEN Lan,YU Deming,et al.Impact of surface roughness on corona discharge for 30-year operating conductors in500-kV AC power transmission line[J].IEEE Transactions on Power Delivery,2012,27(3):1693-1695.
[12]BIAN Xingming,YU Deming,CHEN Lan,et al.Influence of aged conductor surface conditions on AC corona discharge with a corona cage[J].IEEE Transactions on Dielectrics&Electrical Insulation,2011,18(3):809-818.
[13]卞星明,杨文言,赵磊,等.交流输电线路导线表面状态的实验研究[J].高电压技术,2011,37(1):62-68.BIAN Xingming,YANG Wenyan,ZHAO Lei,et al.Experiment investigation on surface conditions of conductors in AC power transmission lines[J].High Voltage Engineering,2011,37(1):62-68.
[14]YI Y,ZHANG C,WANG L,et al.Conductor surface conditions effects on the ion-flow field of long-term operating conductors of the HVDCtransmission line[J].IEEE Transactions on Power Delivery,2017,32(5):2171-2178.
[15]吴刚,赵新泽,赵春华.架空导线的摩擦磨损研究进展[J].润滑与密封,2008,33(10):103-106.WU Gang,ZHAO Xinze,ZHAO Chunhua.Research progresses on friction and wear of overhead electrical conductors[J].Lubrication Engineering,2008,33(10):103-106.
[16]赵美云,赵新泽,付志成,等.微风振动下架空导线接触特性有限元分析[J].机械强度,2015,37(6):1113-1118.ZHAO Meiyun,ZHAO Xinze,FU Zhicheng,et al.Finite element analysis of contact characteristic of overhead conductor in aeolian vibration[J].Journal of Mechanical Strength,2015,37(6):1113-1118.
[17]刘云鹏,朱雷,耿江海,等.沙尘粒径效应对分裂导线电晕特性的影响[J].高电压技术,2015,41(9):3048-3053.LIU Yunpen,ZHU Lei,GENG Jianghai,et al.Influence of sand particle size effect on corona discharge characteristics of bundle conductors[J].High Voltage Engineering,2015,41(9):3048-3053.
[18]岳腾.风沙环境下导线表面粗糙度变化及其对电晕特性的影响研究[D].保定:华北电力大学,2014.YUE Teng.The research on the wire surface roughness changes under the sand environment and its effects of corona characteristics[D].Baoding,China:North China Electric Power University,2014.
[19]芦信.风沙两相流对架空导线磨损的实验研究[D].保定:华北电力大学,2013.LU Xin.Experimental research on transmission line worn in wind-sand two-phase flow[D].Baoding,China:North China Electric Power University,2013.
[20]王瑞雪,海彬,田思理,等.绝缘材料表面电荷测量优化及等离子体处理对其表面电特性的影响[J].高电压技术,2017,43(6):1808-1815.WANG Ruixue,HAI Bin,TIAN Sili,et al.Optimization of dielectric material surface charge measurement and impact of plasma treatment on their surface electrical characteristics[J].High Voltage Engineering,2017,43(6):1808-1815.
[21]WHITEHEAD J B.The electric strength of air-VI[J].Proceedings of the American Institute of Electrical Engineers,2013,36(2):159-188.
[22]冯允平.高电压技术中的气体放电及其应用[M].北京:水利电力出版社,1990.FENG Yunping.Gas discharge in high voltage technology and its application[M].Beijing,China:Water Resources and Electric Power Press,1990.
[2]律方成,刘宏宇,阴凯,等.直流GIL不均匀场中金属微粒运动的数值模拟及放电特性分析[J].中国电机工程学报,2017,37(10):2798-2806.LüFangcheng,LIU Hongyu,YIN Kai,et al.Numerical simulation and discharge characteristic analysis of metallic particle motion in non-uniform electric field of DC GIL[J].Proceedings of the CSEE,2017,37(10):2798-2806.
[3]LI X,CUI X,LU T,et al.Experimental investigation on correlation of corona-induced vibration and audible noise from DC conductor[J].High Voltage,2016,1(3):115-121.
[4]汤广福,王高勇,贺之渊,等.张北500 kV直流电网关键技术与设备研究[J].高电压技术,2018,44(7):2097-2106.TANG Guangfu,WANG Gaoyong,HE Zhiyuan,et al.Research on key technology and equipment for Zhangbei 500 kV DC grid[J].High Voltage Engineering,2018,44(7):2097-2106.
[5]陈杉杉,贺恒鑫,邹妍晖,等.雷云电场作用下±1100kV特高压直流输电线路电晕空间电荷分布特征的仿真研究[J].高电压技术,2018,44(4):1367-1376.CHEN Binbin,HE Hengxin,ZOU Yanhui,et al.Distribution characteristics of corona space charge generated from the±1 100 k VUHVDC overhead transmission line under the thundercloud electric field[J].High Voltage Engineering,2018,44(4):1367-1376.
[6]王振国,卢铁兵,刘阳.邻近交流线路时直流导线电晕放电引起的无线电干扰数值模拟[J].高电压技术,2017,43(3):1000-1005.WANG Zhenguo,LU Tiebing,LIU Yang.Numerical simulation of radio interference caused by DC corona being adjacent to ACtransmission lines[J].High Voltage Engineering,2017,43(3):1000-1005.
[7]马爱清,陈健.考虑雨天的直流±800 kV与交流500 kV并行输电线路3维混合电场及静电感应分析[J].高电压技术,2017,43(7):2114-2121.MA Aiqing,CHEN Jian.Analysis on three-dimensional hybrid electric field and related electrostatic induction effect of±800 kV DC and 500kV AC parallel transmission line considering rainy days[J].High Voltage Engineering,2017,43(7):2114-2121.
[8]王东来,卢铁兵,陈博,等.±1 100 k V特高压直流输电线路邻近树木时合成电场建模计算与特性研究[J].电网技术,2017,41(11):3441-3447.WANG Donglai,LU Tiebing,CHEN Bo,et al.Modelling and characteristic research of total electric field around trees near±1 100 k VUHVDC transmission lines[J].Power System Technology,2017,41(11):3441-3447.
[9]王东来,卢铁兵,崔翔,等.两回高压直流输电线路交叉跨越时地面合成电场计算[J].电工技术学报,2017,32(2):77-84.WANG Donglai,LU Tiebing,CUI Xiang,et al.Simulation of total electric field under the crossing of two circuit HVDC transmission lines[J].Transactions of China Electrotechnical Society,2017,32(2):77-84.
[10]LU Tiebing,XIONG Gaolin,CUI Xiang,et al.Analysis of corona onset electric field considering the effect of space charges[J].IEEETransactions on Magnetics,2011,47(5):1390-1393
[11]BIAN Xingming,CHEN Lan,YU Deming,et al.Impact of surface roughness on corona discharge for 30-year operating conductors in500-kV AC power transmission line[J].IEEE Transactions on Power Delivery,2012,27(3):1693-1695.
[12]BIAN Xingming,YU Deming,CHEN Lan,et al.Influence of aged conductor surface conditions on AC corona discharge with a corona cage[J].IEEE Transactions on Dielectrics&Electrical Insulation,2011,18(3):809-818.
[13]卞星明,杨文言,赵磊,等.交流输电线路导线表面状态的实验研究[J].高电压技术,2011,37(1):62-68.BIAN Xingming,YANG Wenyan,ZHAO Lei,et al.Experiment investigation on surface conditions of conductors in AC power transmission lines[J].High Voltage Engineering,2011,37(1):62-68.
[14]YI Y,ZHANG C,WANG L,et al.Conductor surface conditions effects on the ion-flow field of long-term operating conductors of the HVDCtransmission line[J].IEEE Transactions on Power Delivery,2017,32(5):2171-2178.
[15]吴刚,赵新泽,赵春华.架空导线的摩擦磨损研究进展[J].润滑与密封,2008,33(10):103-106.WU Gang,ZHAO Xinze,ZHAO Chunhua.Research progresses on friction and wear of overhead electrical conductors[J].Lubrication Engineering,2008,33(10):103-106.
[16]赵美云,赵新泽,付志成,等.微风振动下架空导线接触特性有限元分析[J].机械强度,2015,37(6):1113-1118.ZHAO Meiyun,ZHAO Xinze,FU Zhicheng,et al.Finite element analysis of contact characteristic of overhead conductor in aeolian vibration[J].Journal of Mechanical Strength,2015,37(6):1113-1118.
[17]刘云鹏,朱雷,耿江海,等.沙尘粒径效应对分裂导线电晕特性的影响[J].高电压技术,2015,41(9):3048-3053.LIU Yunpen,ZHU Lei,GENG Jianghai,et al.Influence of sand particle size effect on corona discharge characteristics of bundle conductors[J].High Voltage Engineering,2015,41(9):3048-3053.
[18]岳腾.风沙环境下导线表面粗糙度变化及其对电晕特性的影响研究[D].保定:华北电力大学,2014.YUE Teng.The research on the wire surface roughness changes under the sand environment and its effects of corona characteristics[D].Baoding,China:North China Electric Power University,2014.
[19]芦信.风沙两相流对架空导线磨损的实验研究[D].保定:华北电力大学,2013.LU Xin.Experimental research on transmission line worn in wind-sand two-phase flow[D].Baoding,China:North China Electric Power University,2013.
[20]王瑞雪,海彬,田思理,等.绝缘材料表面电荷测量优化及等离子体处理对其表面电特性的影响[J].高电压技术,2017,43(6):1808-1815.WANG Ruixue,HAI Bin,TIAN Sili,et al.Optimization of dielectric material surface charge measurement and impact of plasma treatment on their surface electrical characteristics[J].High Voltage Engineering,2017,43(6):1808-1815.
[21]WHITEHEAD J B.The electric strength of air-VI[J].Proceedings of the American Institute of Electrical Engineers,2013,36(2):159-188.
[22]冯允平.高电压技术中的气体放电及其应用[M].北京:水利电力出版社,1990.FENG Yunping.Gas discharge in high voltage technology and its application[M].Beijing,China:Water Resources and Electric Power Press,1990.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |