城市高压交流输电线路对电磁环境的影响研究  

作　　者：陈斌 雷东 张祺 刘斐 徐凌悦 

机构地区：[1]国网浙江省电力有限公司建设分公司,杭州310016 [2]浙江电力建设工程咨询有限公司,杭州310003 [3]中国电建集团华东勘测设计研究院有限公司,杭州311122 [4]浙江华东生态环境工程研究院,杭州311122

出　　处：《科技创新与应用》2024年第16期112-115,共4页Technology Innovation and Application

摘　　要：电磁环境承载无线电通信、广播和观测等业务,支撑移动互联网、物联网、卫星电视和射电望远镜等新型基础设施,保护电磁环境成为交流输变电系统设计运行的关键。该研究选取城市常见的架空220 kV交流输电线路为研究对象,测量某线路附近地面及居民楼内电场和磁场强度,分析电磁干扰的来源、产生机理、频域特征和空间衰减过程,比照城市常见无线电业务的频段和调制方式,得到典型工况下输电线路对无线电信号信噪比的影响规律,提出输电系统影响下,电磁环境保护和通信增益措施。Electromagnetic environment carries radio communication,broadcasting and observation services,and supports new infrastructure such as mobile Internet,Internet of things,satellite television,radio telescope and so on.The protection of electromagnetic environment has become the key to the design and operation of AC power transmission and transformation system.In this study,220 kV AC transmission lines commonly used in cities are selected as the research object to measure the intensity of electric and magnetic fields on the ground and in residential buildings near a certain line.The source,mechanism,frequency domain characteristics and spatial attenuation process of electromagnetic interference are analyzed.According to the signal strength and frequency band of the business,the influence law of the transmission line on the signal-to-noise ratio of the radio signal under typical working conditions is obtained,and the electromagnetic environment protection and communication gain measures under the influence of the transmission system are proposed.

关 键 词：电磁环境 输变电 环境影响评价 无线电业务 交流输电线路 电磁辐射 

分 类 号：TM75[电气工程—电力系统及自动化]