同塔四回750 kV六层横担输电线路电晕损失研究
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摘要
开展同塔四回750 kV 6层横担输电线路电晕损失的研究有利于同塔四回线路的电晕损失评估以及工程应用。为此,利用有限元分析软件计算了750kV同塔四回6层横担输电线路各相导线的最大表面有效场强,得到导线表面最大有效场强在14.33～15.70 kV/cm之间。根据不同海拔点淋雨及风沙天气下6×JL1/G1A–500/45/s400导线的电晕笼电晕损失数据,通过指数与线性联合修正形式将其修正到线路的计算海拔上。由电晕损失等效方法计算得到了电晕笼到实际线路的修正系数。对实际输电线路晴天、雨、雪、雾、风沙天气条件下的电晕损失功率进行分析,利用全年各种天气年小时数来对全线进行电晕损失估算分析,计算得到750 kV同塔四回6层横担线路的平均电晕损失功率为79.97 kW/km,最大电晕损失功率为400.96 kW/km,全年电晕损失能量为14.01×10~6 kW·h。
Research on corona loss of 750 kV four-circuit lines with six-layer cross-arms on the same tower is beneficial to corona loss evaluation and engineering application. Consequently, we calculated the maximum conductor surface field intensity in 750 kV four-circuit lines on the same tower by means of finite element method(FEM), which was between14.33 kV/cm and 15.70 kV/cm. Then, we analyzed the corona loss of 6×JL1/G1 A-500/45/s400 wire under heavy rainy and wind-sand condition at different elevations, which was corrected to the calculated altitude through the exponential and linear joint correction form. And the equivalent method of effective corona loss was studied. Next, the correction factor of the movable corona cage and 750 kV four-circuit lines with six cross-arms on the same tower were computed.Finally, the power of corona loss on sunny, rainy, snowy, foggy and sandy days was discussed, and the corona loss estimation of the whole 750 kV four-circuit lines on the same tower was calculated. Considering the weather factors throughout the year, the average power of corona loss of the whole line is 79.97 kW/km, the maximum power of corona loss is400.96 kW/km, and the annual corona loss energy is 14.01×10~6 kW·h.
Research on corona loss of 750 kV four-circuit lines with six-layer cross-arms on the same tower is beneficial to corona loss evaluation and engineering application. Consequently, we calculated the maximum conductor surface field intensity in 750 kV four-circuit lines on the same tower by means of finite element method(FEM), which was between14.33 kV/cm and 15.70 kV/cm. Then, we analyzed the corona loss of 6×JL1/G1 A-500/45/s400 wire under heavy rainy and wind-sand condition at different elevations, which was corrected to the calculated altitude through the exponential and linear joint correction form. And the equivalent method of effective corona loss was studied. Next, the correction factor of the movable corona cage and 750 kV four-circuit lines with six cross-arms on the same tower were computed.Finally, the power of corona loss on sunny, rainy, snowy, foggy and sandy days was discussed, and the corona loss estimation of the whole 750 kV four-circuit lines on the same tower was calculated. Considering the weather factors throughout the year, the average power of corona loss of the whole line is 79.97 kW/km, the maximum power of corona loss is400.96 kW/km, and the annual corona loss energy is 14.01×10~6 kW·h.
引文
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[5]万保权,武晓蕊,裴春明,等.基于回归分析法的交流输电线路声功率计算方法[J].高电压技术,2017,43(4):1354-1361.WAN Baoquan,WU Xiaorui,PEI Chunming,et al.Calculation method for acoustic power based on multivariant regression method for ACtransmission lines[J].High Voltage Engineering,2017,43(4):1354-1361.
[6]谢辉春,崔翔,路遥,等.特高压同塔双回交流输电线路绝缘子串长优化后的线路可听噪声试验[J].高电压技术,2016,42(5):1659-1666.XIE Huichun,CUI Xiang,LU Yao,et al.Corona audible noise experiment of UHV AC double-circuit line with optimization of insulator string length[J].High Voltage Engineering,2016,42(5):1659-1666.
[7]谢辉春,崔翔,刘华钢,等.特高压同塔双回交流输电线路采用(8+2)分裂导线与常规导线电晕特性对比[J].高电压技术,2016,42(3):966-972.XIE Huichun,CUI Xiang,LIU Huagang,et al.Corona characteristic comparison of(8+2)Bundled wire and normal wire applying in UHVAC double-circuit transmission line on the same tower[J].High Voltage Engineering,2016,42(3):966-972.
[8]LIU Y P,HUANG S L.Experimental investigation of ion mobility measurements in oxygen under different gas pressures[J].Journal of Electrical Engineering&Technology,2017,12(2):852-857.
[9]LIU Y P,HUANG S L,ZHU L.Influence of humidity and air pressure on the ion mobility based on drift tube method[J].CSEE Journal of Power&Energy Systems,2015,1(3):37-41.
[10]唐剑,何金良,刘云鹏,等.海拔对导线交流电晕可听噪声影响的电晕笼试验结果与分析[J].中国电机工程学报,2010,30(4):105-111.TANG Jian,HE Jinliang,LIU Yunpeng,et al.Test resultsand analysis of altitude-change effect on audible noise of AC corona occurring on conductors with corona-test cage[J].Proceedings of the CSEE,2010,30(4):105-111.
[11]尤少华,刘云鹏,律方成,等.不同海拔下电晕笼分裂导线起晕电压的计算分析[J].中国电机工程学报,2012,32(4):169-177.YOU Shaohua,LIU Yunpeng,LüFangcheng,et al.Calculation and analysis on corona onset voltage of corona cage bundle conductors at different attitudes[J].Proceedings of the CSEE,2012,32(4):169-177.
[12]110~750 kV架空输电线路设计规范:GB 50545-2010[S],2010.Code for design of 110~750 k V overhead transmission line:GB50545-2010[S],2010.
[13]张晓.同塔四回输电线路电磁环境研究[D].杭州:浙江大学,2010.ZHANG Xiao.Research on the electromagnetic environment of transmission line on the same tower[D].Hangzhou,China:Zhejiang University,2010.
[14]邢琳,孙强,刘云鹏,等.750 kV输电线路导线电晕损失海拔修正方法的研究[J].高压电器,2010,46(7):20-22.XING Lin,SUN Qiang,LIU Yunpeng,et al.Altitude correction methods for corona loss of 750 kV transmission line[J].High Voltage Apparatus,2010,46(7):20-22.
[15]朱妮妮.基于电晕笼和试验线段的导线电晕损失测量等效性的研究[D].保定:华北电力大学,2011.ZHU Nini.Research of equivalence of corona loss measurements of the conductors based on corona cage and test line[D].Baoding,China:North China Electric Power University,2011.
[16]MARUVADA P S.Corona performance of high-voltage transmission lines[M].London,UK:Research Studies Press Ltd.,2000.
[17]尤少华.基于电晕笼的特高压交流输电线路导线电晕损失特性研究[D].北京:华北电力大学,2012.YOU Shaohua.Corona cage-based corona loss characteristics of conductors for UHV AC transmission line[D].Beijing,China:North China Electric Power University,2012.
[18]尤少华,律方成,刘云鹏,等.电晕笼交流单根导线电晕损失的计算分析[J].中国电机工程学报,2012,32(1):162-170.YOU Shaohua,LüFangcheng,LIU Yunpeng,et al.Calculation and analysis on corona loss of AC single conductor in corona cage[J].Proceedings of the CSEE,2012,32(1):162-170.
[19]ANDERSON J G.345 kV及以上超高压输电线路[M].北京:电力工业出版社,1981.ANDERSON J G.345 kV and super high volages transmission lines[M].Beijing,China:China Electric Power Press,1981.
[20]GROSS L W,WAGNER C F,NAEF O,et al.Corona investigation on extra-high voltage line-500 k V test project of the american gas and electric company[J].IEEE Transactions on Power Apparatus and Systems,1951,70(1):75-94.
[21]ANDERSON J G,BARETSKY M,MACCARTHY D D.Corona-loss characteristics of EHV transmission lines based on project EHV research[J].IEEE Transactions on Power Apparatus and Systems,1966,85(12):119-1211.
[22]VERNON C,DERRILL F S,NESTOR K.The apple grove 750 k Vproject:statistical analysis of radio influence and corona loss performance of conductors at 775 kV[J].IEEE Transactions on Power Apparatus and Systems,1970,89(5/6):867-881.
[23]SOLLERKVIST F J,MAXWELL A,ROUDEN K,et al.Evaluation,verification and operational supervision of corona losses in Sweden[J].IEEE Transactions on Power Delievery,2007,22(2):1210-1217.
[24]CHARTIER V L,LEE L Y,DICKSON L D,et al.Effect of high altitude on high voltage AC transmission line corona phenomena[J].IEEETransactions on Power Delivery,1987,2(1):225-237
[25]朱雷,刘云鹏,耿江海.高海拔沙尘条件下750 kV输电线路导线电晕损失特性[J].中国电机工程学报,2015,35(22):5924-5932.ZHU Lei,LIU Yunpeng,GENG Jianghai.Influence of sandy condition on corona loss characteristic of the 750 kV bundle conductors in high altitude area[J].Proceedings of the CSEE,2015,35(22):5924-5932.
[26]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 Yunpeng,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.
[2]舒印彪,胡毅.交流特高压输电线路关键技术的研究及应用[J].中国电机工程学报,2007,27(36):1-7.SHU Yinbiao,HU Yi.Research and application of the key technologies of UHV AC transmission line[J].Proceedings of the CSEE,2007,27(36):1-7.
[3]舒印彪,张文亮.特高压输电若干关键技术研究[J].中国电机工程学报,2007,27(31):1-6.SHU Yinbiao,ZHANG Wenliang.Research of key technologies for UHV transmission[J].Proceedings of the CSEE,2007,27(31):1-6.
[4]舒印彪.1 000 k V特高压交流输电技术的研究与应用[J].电网技术,2005,29(19):1-6.SHU YINbiao.Research and application of 1 000 kV UHV AC transmission technology[J].Power System Technology,2005,29(19):1-6.
[5]万保权,武晓蕊,裴春明,等.基于回归分析法的交流输电线路声功率计算方法[J].高电压技术,2017,43(4):1354-1361.WAN Baoquan,WU Xiaorui,PEI Chunming,et al.Calculation method for acoustic power based on multivariant regression method for ACtransmission lines[J].High Voltage Engineering,2017,43(4):1354-1361.
[6]谢辉春,崔翔,路遥,等.特高压同塔双回交流输电线路绝缘子串长优化后的线路可听噪声试验[J].高电压技术,2016,42(5):1659-1666.XIE Huichun,CUI Xiang,LU Yao,et al.Corona audible noise experiment of UHV AC double-circuit line with optimization of insulator string length[J].High Voltage Engineering,2016,42(5):1659-1666.
[7]谢辉春,崔翔,刘华钢,等.特高压同塔双回交流输电线路采用(8+2)分裂导线与常规导线电晕特性对比[J].高电压技术,2016,42(3):966-972.XIE Huichun,CUI Xiang,LIU Huagang,et al.Corona characteristic comparison of(8+2)Bundled wire and normal wire applying in UHVAC double-circuit transmission line on the same tower[J].High Voltage Engineering,2016,42(3):966-972.
[8]LIU Y P,HUANG S L.Experimental investigation of ion mobility measurements in oxygen under different gas pressures[J].Journal of Electrical Engineering&Technology,2017,12(2):852-857.
[9]LIU Y P,HUANG S L,ZHU L.Influence of humidity and air pressure on the ion mobility based on drift tube method[J].CSEE Journal of Power&Energy Systems,2015,1(3):37-41.
[10]唐剑,何金良,刘云鹏,等.海拔对导线交流电晕可听噪声影响的电晕笼试验结果与分析[J].中国电机工程学报,2010,30(4):105-111.TANG Jian,HE Jinliang,LIU Yunpeng,et al.Test resultsand analysis of altitude-change effect on audible noise of AC corona occurring on conductors with corona-test cage[J].Proceedings of the CSEE,2010,30(4):105-111.
[11]尤少华,刘云鹏,律方成,等.不同海拔下电晕笼分裂导线起晕电压的计算分析[J].中国电机工程学报,2012,32(4):169-177.YOU Shaohua,LIU Yunpeng,LüFangcheng,et al.Calculation and analysis on corona onset voltage of corona cage bundle conductors at different attitudes[J].Proceedings of the CSEE,2012,32(4):169-177.
[12]110~750 kV架空输电线路设计规范:GB 50545-2010[S],2010.Code for design of 110~750 k V overhead transmission line:GB50545-2010[S],2010.
[13]张晓.同塔四回输电线路电磁环境研究[D].杭州:浙江大学,2010.ZHANG Xiao.Research on the electromagnetic environment of transmission line on the same tower[D].Hangzhou,China:Zhejiang University,2010.
[14]邢琳,孙强,刘云鹏,等.750 kV输电线路导线电晕损失海拔修正方法的研究[J].高压电器,2010,46(7):20-22.XING Lin,SUN Qiang,LIU Yunpeng,et al.Altitude correction methods for corona loss of 750 kV transmission line[J].High Voltage Apparatus,2010,46(7):20-22.
[15]朱妮妮.基于电晕笼和试验线段的导线电晕损失测量等效性的研究[D].保定:华北电力大学,2011.ZHU Nini.Research of equivalence of corona loss measurements of the conductors based on corona cage and test line[D].Baoding,China:North China Electric Power University,2011.
[16]MARUVADA P S.Corona performance of high-voltage transmission lines[M].London,UK:Research Studies Press Ltd.,2000.
[17]尤少华.基于电晕笼的特高压交流输电线路导线电晕损失特性研究[D].北京:华北电力大学,2012.YOU Shaohua.Corona cage-based corona loss characteristics of conductors for UHV AC transmission line[D].Beijing,China:North China Electric Power University,2012.
[18]尤少华,律方成,刘云鹏,等.电晕笼交流单根导线电晕损失的计算分析[J].中国电机工程学报,2012,32(1):162-170.YOU Shaohua,LüFangcheng,LIU Yunpeng,et al.Calculation and analysis on corona loss of AC single conductor in corona cage[J].Proceedings of the CSEE,2012,32(1):162-170.
[19]ANDERSON J G.345 kV及以上超高压输电线路[M].北京:电力工业出版社,1981.ANDERSON J G.345 kV and super high volages transmission lines[M].Beijing,China:China Electric Power Press,1981.
[20]GROSS L W,WAGNER C F,NAEF O,et al.Corona investigation on extra-high voltage line-500 k V test project of the american gas and electric company[J].IEEE Transactions on Power Apparatus and Systems,1951,70(1):75-94.
[21]ANDERSON J G,BARETSKY M,MACCARTHY D D.Corona-loss characteristics of EHV transmission lines based on project EHV research[J].IEEE Transactions on Power Apparatus and Systems,1966,85(12):119-1211.
[22]VERNON C,DERRILL F S,NESTOR K.The apple grove 750 k Vproject:statistical analysis of radio influence and corona loss performance of conductors at 775 kV[J].IEEE Transactions on Power Apparatus and Systems,1970,89(5/6):867-881.
[23]SOLLERKVIST F J,MAXWELL A,ROUDEN K,et al.Evaluation,verification and operational supervision of corona losses in Sweden[J].IEEE Transactions on Power Delievery,2007,22(2):1210-1217.
[24]CHARTIER V L,LEE L Y,DICKSON L D,et al.Effect of high altitude on high voltage AC transmission line corona phenomena[J].IEEETransactions on Power Delivery,1987,2(1):225-237
[25]朱雷,刘云鹏,耿江海.高海拔沙尘条件下750 kV输电线路导线电晕损失特性[J].中国电机工程学报,2015,35(22):5924-5932.ZHU Lei,LIU Yunpeng,GENG Jianghai.Influence of sandy condition on corona loss characteristic of the 750 kV bundle conductors in high altitude area[J].Proceedings of the CSEE,2015,35(22):5924-5932.
[26]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 Yunpeng,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.
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