输电线路无源干扰分析时导线建模方法研究
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摘要
输电线路对邻近无线电台站的无源干扰可能影响无线电台站信号的有效接收和发射,因此准确计算在外界电磁波入射情况下包括架空导线和杆塔在内的输电线路的电磁散射是确定两者合理避让间距的基础。对于雷达台站而言,由于雷达的工作方式等影响,架空导线是影响雷达探测的主要因素。针对一般情况下应用矩量法开展无源干扰计算时,将架空导线全部假设为圆柱导体,分别就建模方法为线模型、三角形面模型的架空导线空间电磁场的方法进行了阐述,并且与实际绞线形式架空导线的计算结果进行了对比,获得了建模方法不同的导线在雷达不同工作频率和空间不同位置处的电场强度,分析了应用线模型和三角形面模型等面模型以及实际绞线模型对导线建模的适用范围。从而为获得雷达与无线电台站的避让距离提供了建模基础。
Passive interference from transmission lines to neighboring radio stations may affect the effective reception and transmission of radio station signals. Therefore,to determine the safe distance between radar and its neighbouring radio station,it is basic to accurately calculate the electromagnetic scattering of transmission lines including overhead wires and towers with incidence of external electromagnetic waves. For radar stations,the overhead conductor is the main factor that affects the radar detection because of their working mode and other reasons. In general cases,the moment method was applied to carry out passive interference calculations and all overhead lines were assumed to be cylindrical conductors. However,this paper described the calculation of space electromagnetic field with line model and triangular surface model and compared with the calculation results of the overhead conductor in actual wire. This paper found out the space electric field strength through different conductor modelings with different operating frequencies and at various spacial positions. It also analyzed the application scope of conductor modelings including line model,triangle surface model and actual twisted line model. Thus,this paper provided basis for modeling the safe distance between radar and radio stations.
Passive interference from transmission lines to neighboring radio stations may affect the effective reception and transmission of radio station signals. Therefore,to determine the safe distance between radar and its neighbouring radio station,it is basic to accurately calculate the electromagnetic scattering of transmission lines including overhead wires and towers with incidence of external electromagnetic waves. For radar stations,the overhead conductor is the main factor that affects the radar detection because of their working mode and other reasons. In general cases,the moment method was applied to carry out passive interference calculations and all overhead lines were assumed to be cylindrical conductors. However,this paper described the calculation of space electromagnetic field with line model and triangular surface model and compared with the calculation results of the overhead conductor in actual wire. This paper found out the space electric field strength through different conductor modelings with different operating frequencies and at various spacial positions. It also analyzed the application scope of conductor modelings including line model,triangle surface model and actual twisted line model. Thus,this paper provided basis for modeling the safe distance between radar and radio stations.
引文
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[14]姚新昱.特高压直流输电线路电磁环境及其影响因素研究[J].内燃机与配件,2018,(1):228-231.YAO Xinyu. Study on electromagnetic environment of uhv direct current transmission line and its influencing factors[J]. Internal Combustion Engine and Accessories,2018,(1):228-231.
[15]唐波,孙睿,赵晓明,等.甚高频段特高压输电线路无源干扰求解[J].中国电力,2016,31(10):90-93.TANG Bo,SUN Rui,ZHAO Xiaoming,et al. Calculation of Reradation Interference in Ultra High Frequency from UHV Power Lines Based on IPO Method[J]. China Power,2016,31(10):90-93.
[16]卢莹,张建功,干喆渊,等.交流特高压输电线路对雷达台站的无源干扰研究[J].电力科学与工程,2018,34(7):1-6.LU Ying,ZHANG Jiangong,GAN Zeyuan,et al. Study on passive interference of ac uhv transmission line to radar station[J]. Power Science and Engineering,2018,34(7):1-6.
[17]LUDWIG A C. Wire grid modeling of surfaces[J].IEEE Transactions on Antennas, 1987, 35(9):1045-1048.
[18]TRUEMAN C W,KUBINA S J. Fields of complex surfaces using wire grid modeling[J]. IEEE Transactions on Magnetics,1991,27(5):4262-4267.
[19]李程,王琴剑,刘又铭.高压输电线路对中波导航台无源干扰的研究[J].现代电子技术,2016,39(7):79-82.LI Cheng,WANG Qinjian,LIU Youming. Research on passive interference from high-voltage transmission line affecting on medium wave navigation station[J]. Modern Electronics Technique,2016,39(7):79-82.
[20]唐波,杨嘉炜,黄力,等.特高压线路对对空雷达站电磁干扰的防护间距.三峡大学学报. 2018,40(4):60-63.TANG Bo,YANG Jiawei,Huang li,et al. Guard spacing of the air surveillance radar station to Ultrahigh Voltage transmission line. 2018,40(4):60-63.
[21]KAMAL Sarabandi. A Radar Cross-Section Model for Power Lines at Millimeter-Wave Frequencies[J].IEEE Transactions on Antennas and Propagation,2003(9):2353-2360.
[22]GJBZ20195-93 《军用地面雷达阵地选择规范》.
[2]孟絮絮,孙志远,马竞,等.不同输电结构特高压交流输电线路电磁环境研究[J].安徽电力,2018(2):23-26.MENGSusu,SUN Zhiyuan,MA Jing,et al. Study on electromagnetic environment of uhv ac transmission lines with different transmission structures[J]. Anhui Electric Power,2018,(2):23-26.
[3]HILL P C. Measurement of reradiation from lattice masts at V. H,F.[J]. Proc Inst Elec Eng,1964,111(12):1957-1968.
[4]BELROSES J S,LAVRENCH W,DUNN J G,et al.The effects of reradiation from high rise buildings and transmission lines upon the radiation pattern of MF broadcasing antenna arrays[C]//Proceedings of AGARD/EPP Meeting,Spatind,Norway:1979.
[5]KAMAL Sarabandi,MOONSOOO Park. A radar crosssection model for power lines at millmeter-wave frequency[J]. IEEE Transactions on Antenna and Propagation,2003,51(9):2353-2360.
[6]TRUEMEN C W,KUBINA S J. Scatting from power lines with the skywire insulated from the towers[J].IEEE Transactions on Broadcasting,1994,40(2):53-62.
[7]KINASE. Theoretical analysis of reradiation characteristics of radio wave caused by transmission lines[J].NHK Technology Research,1968,20(3):42-48.
[8]TAKESHITA K, TAKESHITA S, HASHIMOTO H.Scattering characteristics of VHF/UHF television broadcasting waves by overhead oower transmission conductors[J]. IEEE Transactions on Electromagnetic Compatibility,1979,21(1):33-40.
[9]GB13618-1992 《对空情报雷达站电磁环境防护要求》.
[10]TRUEMEN C W,KUBINA S J. Power line tower models above 1000kHz in the standard broadcast band[J].IEEE Transactions on Broadcasting,1990,36(3):207-218.
[11]TRUEMEN C W,KUBINA S J. Scattering from Power lines with the skywire insulated from the towers[J].IEEE Transactions on Broadcasting,1994,40(2):53-62.
[12]干喆渊,王延海,张建功,等.应用磁环抑制输电线路短波频段无源干扰.高电压技术,2017,43(5):336-342.GAN Zheyuna,WANG Yanhai,ZHANG Jiangong,et al,Suppression of HF passive interference in transmission lines by using magnetic tube. High Voltage Engineering,2017,43(5):336-342.
[13]TILSTON M A,BALMAIN K G. A microcomputer program for predicting AM broadcast re-radiation from steel tower power lines[J]. IEEE Transactions on Broadcasting,1984,30(2):50-56.
[14]姚新昱.特高压直流输电线路电磁环境及其影响因素研究[J].内燃机与配件,2018,(1):228-231.YAO Xinyu. Study on electromagnetic environment of uhv direct current transmission line and its influencing factors[J]. Internal Combustion Engine and Accessories,2018,(1):228-231.
[15]唐波,孙睿,赵晓明,等.甚高频段特高压输电线路无源干扰求解[J].中国电力,2016,31(10):90-93.TANG Bo,SUN Rui,ZHAO Xiaoming,et al. Calculation of Reradation Interference in Ultra High Frequency from UHV Power Lines Based on IPO Method[J]. China Power,2016,31(10):90-93.
[16]卢莹,张建功,干喆渊,等.交流特高压输电线路对雷达台站的无源干扰研究[J].电力科学与工程,2018,34(7):1-6.LU Ying,ZHANG Jiangong,GAN Zeyuan,et al. Study on passive interference of ac uhv transmission line to radar station[J]. Power Science and Engineering,2018,34(7):1-6.
[17]LUDWIG A C. Wire grid modeling of surfaces[J].IEEE Transactions on Antennas, 1987, 35(9):1045-1048.
[18]TRUEMAN C W,KUBINA S J. Fields of complex surfaces using wire grid modeling[J]. IEEE Transactions on Magnetics,1991,27(5):4262-4267.
[19]李程,王琴剑,刘又铭.高压输电线路对中波导航台无源干扰的研究[J].现代电子技术,2016,39(7):79-82.LI Cheng,WANG Qinjian,LIU Youming. Research on passive interference from high-voltage transmission line affecting on medium wave navigation station[J]. Modern Electronics Technique,2016,39(7):79-82.
[20]唐波,杨嘉炜,黄力,等.特高压线路对对空雷达站电磁干扰的防护间距.三峡大学学报. 2018,40(4):60-63.TANG Bo,YANG Jiawei,Huang li,et al. Guard spacing of the air surveillance radar station to Ultrahigh Voltage transmission line. 2018,40(4):60-63.
[21]KAMAL Sarabandi. A Radar Cross-Section Model for Power Lines at Millimeter-Wave Frequencies[J].IEEE Transactions on Antennas and Propagation,2003(9):2353-2360.
[22]GJBZ20195-93 《军用地面雷达阵地选择规范》.