摘要
±500kV同塔双回直流输电由于输送容量大、占地少等因素在我国得到了推广应用。±500kV同塔双回直流极导线排列方式应综合考虑电磁环境、防雷性能、走廊宽度、电晕等因素并结合工程本体造价综合考虑。本文以溪洛渡送电广东±500kV同塔双回直流输电工程为例,从导地线表面场强、地面合成场强、离子流密度、可听噪声、无线电干扰、导线对地最小距离及走廊宽度、防雷性能等方面,对同塔双回直流线路几种极导线排列方式进行了综合比较分析。
±500kV double circuit DC transmission has wide application and dissemination in china for large transmission capacity,equipment localization and short construction period,Polar conductor arrangements of ±500kV double circuit DC transmission line should consider electromagnetic environment,lightning protection performance,corridor,corona,and project construction cost.This essay takes XILUODU～GUANGDONG ±500kV double circuit DC transmission line for example,synthetically compares several polar conductor arrangements through conductor surface electric field,composite ground electric field,ion current density、audible noise、RI、least distance between conductor and ground、corridor width、lightning protection performance and other factors.
出处
《电力勘测设计》
2010年第1期58-61,共4页
Electric Power Survey & Design
关键词
同塔双回
极导线排列方式
电磁环境
防雷性能
double circuit DC transmission
polar conductor arrangements
electromagnetic environment
lightning protection performance.
