特高压1000kV单回输电线路电磁环境影响预测与评价  

Prediction and evaluation of electromagnetic environment of UHV 1000kV single-circuit transmission line

作　　者：邓学群 张悦 魏东 陈璞金 Deng Xuequn;Zhang Yue;Wei Dong;Chen Pujin(Jiangsu Fuhuan Environmental Science and Technology Co.,Ltd.,Nanjing Jiangsu 210019,China;Yancheng Metrology and Testing Institute,Yancheng Jiangsu 224005,China;State Grid Xuzhou Power Supply Company of Jiangsu Electric Power Co.,Ltd.,Xuzhou Jiangsu 221005,China)

机构地区：[1]江苏辐环环境科技有限公司,江苏南京210019 [2]盐城市计量测试所,江苏盐城224005 [3]国网江苏省电力有限公司徐州供电分公司,江苏徐州221005

出　　处：《环境与发展》2024年第1期60-65,共6页Environment & Development

摘　　要：为顺利推动特高压1000kV输电线路的建设,减小项目建设对周围的电磁环境影响,降低项目周边公众的环保投诉。对特高压1000kV单回输电线路的典型单回路杆塔进行模式预测,分析运行期可能产生的电磁环境影响。预测结果表明:按照设计规范要求的导线对地面最小距离经过人烟稀少的非农业耕作区时,需要提高导线对地面距离至22m,线路下方距地面1.5m高度处的工频电场强度才能够满足《电磁环境控制限值》(GB 8702—2014)中相关要求;按照设计规范要求的导线对地面最小距离经过农业耕作区时,线路下方距地面1.5m高度处的工频电场强度能够满足《电磁环境控制限值》相关要求;线路经过居民区时,导线距地面的最小距离需抬高至39m,线路下方和线路边导线外7m距地面1.5m高度处的工频电场强度和工频磁感应强度才能够满足《电磁环境控制限值》中公众曝露控制限值要求。另外,建议特高压1000kV单回输电线路在选址选线阶段尽量远离居民区;在设计和施工阶段增大导线与地面的距离,降低特高压输电线路对周围的电磁环境影响。In order to smoothly promote the construction of UHV 1000kV transmission line,reduce the impact of the project construction on the surrounding electromagnetic environment,and reduce the environmental complaints of the public around the project.The typical single-circuit poles and towers of UHV 1000kV single-circuit transmission lines are predicted and the electromagnetic environment impact during operation is analyzed.The prediction results show that when the minimum distance between the conductor and the ground as required by the design code passes through the sparsely populated non-agricultural farming area,it is necessary to increase the distance between the conductor and the ground to 22 meters,and the power frequency electric field intensity at a height of 1.5 meters from the ground below the line can meet the relevant requirements in the Controlling limits for electromagnetic environment(GB8702-2014).When the minimum distance between the conductor and the ground as required by the design specification passes through the agricultural farming area,the power frequency electric field intensity at a height of 1.5 meters from the ground below the line can meet the relevant requirements of the Controlling limits for electromagnetic environment;When the line passes through residential areas,the minimum distance from the conductor to the ground needs to be raised to 39 meters,and the power frequency electric field intensity and power frequency magnetic induction intensity at a height of 1.5 meters from the ground at 7 meters below the line and outside the line side conductor can meet the public exposure control limit requirements in the Controlling limits for electromagnetic environment(GB8702-2014).In addition,it is suggested that the UHV 1000kV single-circuit transmission line should be as far away from residential areas as possible during the site selection stage;Increase the distance between the conductor and the ground in the design and construction stage to reduce the impact of the UHV transmission line on the

关 键 词：1000kV 特高压 单回输电线路 电磁环境影响 

分 类 号：X820.3[环境科学与工程—环境工程]