高海拔下特高压交流同塔双回输电线路导线电晕损失研究
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摘要
针对目前我国特高压交流同塔双回输电常用的8×LGJ-630/45导线,基于在西宁市平安县(2 200 m)搭建的特高压电晕笼,系统的研究了8×LGJ-630/45导线在干燥、中雨(6 mm/h)、大雨(12 mm/h)及湿导线的条件下的电晕损失,首次获得了实际高海拔点8×LGJ-630/45导线的电晕笼电晕数据。并以1 000 kV特高压交流同塔双回输电工程典型塔型为例,通过有限元计算软件仿真计算电晕笼内导线和实际线路导线表面电场强度,采用电晕损失等效法,计算了在高海拔地区导线的电晕损失,获得了同塔双回输电线路的电晕损失数据。为我国将来在高海拔地区建设特高压交流输电线路导线选型提供了参考依据。
The research on corona loss in high altitude area of 8 × LGJ-630 conductor which is commonly used in UHV AC double circuit transmission in the same tower is studied in this paper based on the UHV corona cage built in the Ping'an county( 2 200 m),Xining City. The test condition includes dryness,moderate rain( 6 mm/h),heavy rain( 12 mm/h)and humidity. For the first time,the corona data of 8 × LGJ-630/45 conductors in the corona cage at high altitude were obtained. Then,the electric field intensity of the corona cage wire and the actual line conductor is calculated through finite element method simulation,the corona loss of UHV AC double circuit transmission line in high altitude area is analyzed by the example of typical tower type of 1 000 kV UHV AC double circuit transmission line on the same tower with corona loss equivalent method. The corona data of double circuit transmission lines on the same tower at high altitude was obtained. It provides reference basis for the selection of UHV AC transmission lines in high altitude area in the future.
The research on corona loss in high altitude area of 8 × LGJ-630 conductor which is commonly used in UHV AC double circuit transmission in the same tower is studied in this paper based on the UHV corona cage built in the Ping'an county( 2 200 m),Xining City. The test condition includes dryness,moderate rain( 6 mm/h),heavy rain( 12 mm/h)and humidity. For the first time,the corona data of 8 × LGJ-630/45 conductors in the corona cage at high altitude were obtained. Then,the electric field intensity of the corona cage wire and the actual line conductor is calculated through finite element method simulation,the corona loss of UHV AC double circuit transmission line in high altitude area is analyzed by the example of typical tower type of 1 000 kV UHV AC double circuit transmission line on the same tower with corona loss equivalent method. The corona data of double circuit transmission lines on the same tower at high altitude was obtained. It provides reference basis for the selection of UHV AC transmission lines in high altitude area in the future.
引文
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[16]尤少华,刘云鹏,律方成,等.特高压交流同塔双回试验线段雨天电晕损失研究[J].高电压技术,2011,(9):2149-2155.You Shaohua,Liu Yunpeng,Lv Fangcheng,et al.Research on Corona Loss of UHV AC Double Circuits Test Line on the Same Tower Under Rain[J].High Voltage Engineering,2011,(9):2149-2155.
[17]孙林,刘惠民,王凤呜.当代交流特高压输电技术[J].电力科学与工程,1995,332(2):54-59.
[2]孙伟卿,田坤鹏,谈一鸣,等.全球能源互联网关键技术与研究展望[J].自动化仪表,2017,38(1):1-6.Sun Weiqing,Tian Kunpeng,Tan Yiming,et al.Key Technologies and Research Prospects of Global Energy Internet[J].Process Automation Instrumentation,2017,38(1):1-6.
[3]王益民.全球能源互联网理念及前景展望[J].中国电力,2016,(3):1-5,11.Wang Yimin.Concept and Prospect of global energy Internet[J].Electric Power,2016,(3):1-5,11.
[4]李敏,曾嵘,余占清,等.高海拔地区直流输电线路的电晕损耗[J].高电压技术,2011,37(3):746-751.Li Min,Zeng Rong,Yu Zhanqing,et al.Corona Loss of HVDC Transmission Line in High Altitude Area[J].High Voltage Engineering,2011,37(3):746-751.
[5]Liu H,Liu S,Cao H,et al.Experimental simulation system of corona discharges under high-altitude,low-pressure and low-temperature conditions[J].Gaodianya Jishu/high Voltage Engineering,2015,41(2):578-583.
[6]何津云.龙西线高海拔导线电晕的试验研究[J].高压电器,1983,(3):28-32.He Jinyun.Experimental study on the of the Dragon in high altitude area[J].High Voltage,1983,(3):28-32.
[7]李顺元.利用光纤技术测量高压输电线路的电晕损失[J].电网技术,1987,(3):3-7,11.LI Shunyuan.Measurement of corona loss of high voltage transmission lines using optical fiber technology[J].Power System Technology,1987,(3):3-7,11.
[8]Liu Y P,You S H,Lu F C,et al.500-kV EHV Bundle Conductors'Corona Onset Voltage Calculation and Analysis in Corona Cage at Different Altitudes[J].IEEE Transactions on Power Delivery,2012,27(4):2090-2097.
[9]Liu Y P,Zhu L,Lu F C,et al.Corona Onset Characteristics of the750-kV Bundle Conductor in Sand and Dust Weather in High-Altitude Area[J].IEEE Transactions on Power Delivery,2014,29(2):615-623.
[10]Frans Jonas Sollerkvist,Andrew Maxwell,Klas Rouden,et al.Evaluation,verification and operational supervision of corona losses in Sweden[J].IEEE Trans on Power Delievery,2007,22(2):1210-1217.
[11]尤少华,刘云鹏,万启发,等.特高压电晕笼的多分裂导线电晕损失测量系统[J].高电压技术,2010,(1):244-249.You Shaohua,Liu Yunpeng,Wan Qifa,et al.Corona Losses Measurement System of Bundle Conductor Using UHV Corona Cage[J].High Voltage Engineering,2010,(1):244-249.
[12]濮峻嵩,戴玉松,朱康,等.三种数字化绝缘介损监测算法的软件仿真分析[J].西华大学学报:自然科学版,2005,24(2):19-23.PuJunSong,Dai Yusong,Zhu Kang,et al.Simulation Analysis of Three Software Dielectric Loss Measuring Algorithm[J].Sichuan University of Science&Technology,2005,24(2):19-23.
[13]Yin F,Farzaneh M,Jiang X.Corona investigation of an energized conductor under various weather conditions[J].IEEE Transactions on Dielectrics&Electrical Insulation,2017,24(1):462-470.
[14]Cladt J J,Gary C H.Predetermination of Corona Losses Under Rain:Experimental Interpreting and Checking of a Method to Calculate Corona Losses[J].IEEE Transactions on Power Apparatus&Systems,1970,PAS-89(5):853-860.
[15]刘云鹏,尤少华,万启发,等.特高压交流单回试验线段雨天电晕损失研究[J].中国电机工程学报,2010,(19):114-119.Liu Yunpeng,You Shaohua,Wan Qifa,et al.Analysis of Corona Loss of UHV AC Single Circuit Test Line Under Rain[J].Proceedings of the CSEE,2010,(19):114-119.
[16]尤少华,刘云鹏,律方成,等.特高压交流同塔双回试验线段雨天电晕损失研究[J].高电压技术,2011,(9):2149-2155.You Shaohua,Liu Yunpeng,Lv Fangcheng,et al.Research on Corona Loss of UHV AC Double Circuits Test Line on the Same Tower Under Rain[J].High Voltage Engineering,2011,(9):2149-2155.
[17]孙林,刘惠民,王凤呜.当代交流特高压输电技术[J].电力科学与工程,1995,332(2):54-59.