摘要
考虑不同湿度和不同污染等级雾霾状况,结合起晕的湿度效应和悬浮微粒的荷电机理,采用有限元方法计算±800 k V同塔双回UHVDC输电线路的电晕电场效应,得到了雾霾天不同的线路排布方式和线路布局参数下的地面合成电场和离子流密度变化规律,并进行了相应机理分析。为分析雾霾对同塔双回UHVDC输电线路电晕电场特性影响以及考虑雾霾天的同塔双回UHVDC输电线路参数设计提供参考。
With the consideration of different kinds of haze,various humidity and pollution levels,as well as the influence of humidity and charging effect on corona inception,the corona electric field of ±800 kV double-circuit ultra-high voltage direct current（UHVDC） transmission lines on the same tower is calculated with a finite element method（FEM）. Total ground-level electric fields and ion-flow densities for different kinds of conductor arrangement under fog-haze condition are presented,which followed by the results analysis from a physical point of view. This study would provide references for the influence analysis of hazy weather on field characteristics of UHVDC transmission lines on the same tower as well as the parameters design of UHVDC transmission lines under fog-haze weather.
作者
杨金洪
孙东磊
杨娜
冀君
YANG Jinhong SUN Donglei YANG Na JI Jun(State Grid Shandong Electric Power Maintenance Company, Jinan 250118, 2. Economic ＆ Technology Research Institute of State Grid Shandong Electric Power Company, China Jinan 250021, China)
出处
《山东电力技术》
2017年第2期1-6,共6页
Shandong Electric Power
关键词
特高压直流输电线路
电晕电场效应
同塔双回
合成电场
雾霾
UHV DC transmission lines
corona electric field effect
double-circuit on the same tower
total electric field
fog-haze
