摘要
在武汉高压研究所户外试验现场采用直接测量法实测三峡 5 0 0kV双回路铁塔波阻抗及电位分布的结果及其分析表明 :真型铁塔上用方波源实测塔顶波阻抗和电位的直接测量法实际可行 ,测得的新型杆塔和塔顶避雷线悬挂点波阻抗为 174Ω ,>DL/T6 2 0 1997中的推荐值 15 0Ω ;各层横担及塔身各点电位相对于塔顶电位约呈线性分布 ;由于上层横担与地线支架合二为一 ,其电位分布较高。
In this paper, surge impedance and potential distribution investigations of the 500 kV double-loop steel tower used in the Three Gorges transmission project are carried out with the direct method at the outdoor test yard of Wuhan High Voltage Research Institute. Based on the tested results and analyses, it indicates that the measurement of tower surge impedance and its potential distribution with the direct method is available and practical, and that the surge impedance of the new type 500 kV double-loop tower is 174 Ω which is higher than that recommended by DL/T620-1997(150 Ω), and that the potential distribution of tower is linear from top of bottom because of the integrated of the top arm with the ground supports, the potential of the top arm is higher than the normal.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2004年第12期7-9,29,共4页
High Voltage Engineering
基金
三峡输变电工程前期科研课题--三峡 5 0 0kV双回同塔新技术研究内容之一。
关键词
500
KV
双回路铁塔
波阻抗
电位
分布
kV
double loop steel tower
surge impedance
potential
distribution
