高海拔地区特高压直流输电线路电磁环境研究  

Electromagnetic Environment of UHVDC Transmission Lines in High Altitude Areas

作　　者：袁飞 吴志明 贾国富 YUAN Fei;WU Zhi-ming;JIA Guo-fu(China Energy Engineering Group Jiangsu Electric Power Design Institute Co.,Ltd,Nanjing 211100,China;State Grid Qinghai Electric Power Company Huanghua Power Supply Company,Tibetan Autonomous Prefecture of Huangnan 811200,China)

机构地区：[1]中国能源建设集团江苏省电力设计院有限公司,江苏南京211100 [2]国网青海省电力公司黄化供电公司,青海黄南藏族自治州811200

出　　处：《电工电气》2021年第1期17-23,共7页Electrotechnics Electric

摘　　要：为了研究高海拔地区特高压直流输电线路电磁环境影响,青海—河南±800 kV特高压直流输电工程的工程组基于西藏高海拔试验线段的数据,对合成场强、无线电干扰、可听噪声等进行分析。对工程试验进行了阐述,并给出了工程技术边界的确定。实验结果表明,高海拔地区对电磁环境产生不利影响,在工程应用上,需要进行相应的海拔修正,对于合成场强控制的对地距离,每升高1000 m海拔对地距离增加6%;对于无线电干扰,以1000 m为基准,海拔高度每增加300 m,无线电干扰限值增加1 dB;对于可听噪声,海拔每增加1000 m,可听噪声增加2.2 dB进行修正。In order to study the electromagnetic environment impact of UHVDC transmission lines in high altitude areas,the Qinghai—Henan±800 kV UHVDC transmission engineering group based on the data of high altitude test lines in Tibet analyzed the synthetic field intensity,radio interference,audible noise,etc.The engineering test is explained,and the determination of the engineering technology boundary is given.The experimental results show that high altitude has a negative impact on the electromagnetic environment.In engineering applications,the corresponding elevation correction is required.For the distance to the ground controlled by the synthetic field intensity,the distance to the ground increases by 6%for every 1000 m.For radio interference,the limit value of radio interference increases by 1 dB for every 300 m increase in altitude,taking 1000 m as the reference.For audible noise,for every 1000 m increase in elevation,the audible noise increases by 2.2 dB for correction.

关 键 词：高海拔 特高压直流 电磁环境 合成场强 无线电干扰 可听噪声 

分 类 号：TM752[电气工程—电力系统及自动化]