不同海拔直流电磁环境模拟试验线段设计  

Design of reduced-scale test line for DC electromagnetic environment at different altitudes

作　　者：赵录兴 高磊 李大鹏 白锋 Zhao Luxing;Gao Lei;Li Dapeng;Bai Feng(China Electric Power Research Institute,Beijing 100192;Electric Power Research Institute of State Grid Tibet Electric Power Co.,Ltd,Lhasa 850000)

机构地区：[1]中国电力科学研究院有限公司,北京100192 [2]国网西藏电力有限公司电力科学研究院,拉萨850000

出　　处：《电气技术》2020年第7期24-29,共6页Electrical Engineering

基　　金：国家电网公司科技项目(GY71-16-010)。

摘　　要：随着我国电网的快速发展,越来越多的特高压直流输电线路将经过高海拔地区,而直流线路电磁环境海拔修正方法的缺失给目前高海拔直流工程设计带来了很大困难。为便于开展海拔对直流线路电磁环境影响的研究,本文设计了可用于不同海拔试验的直流模拟试验线段,通过计算分析,确定了满足试验要求的模拟试验线段导线型式,给出了试验线段长度、极间距离和导线对地高度等参数的取值范围,明确了试验时的电压变化范围;并在海拔50m^4.3km建设了4处模拟试验线段,通过开展不同海拔电磁环境模拟试验,初步获得了不同海拔高度下的直流线路电磁环境的分布特性,为下一步开展直流电磁环境海拔修正方法的研究奠定了基础。With the rapid development of China power grid,more and more UHV DC transmission lines will pass through high altitude areas.The lack of altitude correction method of DC electromagnetic environment has brought great difficulties to the design in high altitude DC project.In order to study the influence of altitude on the electromagnetic environment of DC transmission line,a DC reduced-scale test line which can be used in different altitude tests was designed in this paper.Through calculation and analysis,the conductor type of reduced-scale test line meeting the test requirements was determined,the value range of parameters such as length of test line,distance between poles and height of conductor to ground was given,and the voltage range during test was also defined.Four reduced-scaled test lines were constructed at an altitude of 50~4300m.Through the electromagnetic environment simulation tests at different altitudes,the electromagnetic environment distribution characteristics of DC transmission lines at different altitudes were preliminarily obtained,which laid a foundation for the further study on the altitude correction method of DC electromagnetic environment.

关 键 词：模拟试验线段 海拔 电磁环境 试验 直流输电线路 

分 类 号：TM721.1[电气工程—电力系统及自动化]