高海拔±800kV直流输电线路电磁环境测量  

Electromagnetic Environment Measurement of ±800 kV DC Transmission Lines at High Altitude

作　　者：李敏[1] 余占清[1] 曾嵘[1] 李锐海 杨达维[1] 刘磊 张华赢 

机构地区：[1]清华大学电机工程与应用电子技术系,北京100084 [2]南方电网科学研究院,广州510080

出　　处：《南方电网技术》2011年第1期42-45,共4页Southern Power System Technology

摘　　要：直流输电线路的电晕及其相关的无线电干扰、可听噪声以及合成场强、地面离子流密度等参数已成为系统设计和运行的主要制约因素。在特高压工程技术(昆明)国家工程实验室(海拔2 100 m)内开展了±800 kV直流输电线路电晕特性及其电磁环境测量,介绍了测试系统及其设备原理,研究了电晕特性及其电磁参数在不同气象条件下的分布,结论为:气象条件对电磁环境影响明显。The corona loss in HVDC transmission lines and relative parameters such as radio interference,audible noise,resultant electric field and ion current have become a key for design and operation of the power system.Measurements of electromagnetic environment parameters with the ± 800 kV DC transmission line in the National Engineering Laboratory（at the altitude of 2 100 m） for UHV Engineering Technology,Kunming,China are performed.The Principle of measurement system and device is introduced.The corona and relative parameters are studied under defferent atmospheric condition.It is concluded that the atmospheric condition at high altitude has obvious effect on the electromagnetic environment.

关 键 词：±800KV直流输电线路 电磁环境 电晕损耗 

分 类 号：TM721.1[电气工程—电力系统及自动化] TM937