摘要
为研究高海拔地区输电线路的电晕问题,建立了三维静电场有限元简化模型,对悬垂瓷绝缘子串的电压分布和均压环表面的电场分布进行了计算,分析均压环管径、环径和安装位置对均压环表面最大场强和绝缘子串电压分布的影响。在此基础上,建立500 kV酒杯塔输电线路1∶1模型进行均压环配置研究,结果表明环直径600 mm,管径60 mm的均压环满足4 000 m高海拔地区金具防晕降噪要求。
To research the problem of serious corona phenomenon in power transmission line at high-altitude region, establishing a simplified three-dimensional electrostatic field finite element model, this paper calculates the voltage distribution of porcelain insulator string and electric field distribution on the surface of grading ring to analyze the influence of ring diameter,pipe diameter and the ring location on the ring’s maximum electric field and the voltage distribution of insulator string, and furthermore makes a research on the grading ring configuration of 500 kV transmission lines with a 1：1 model of cup tower proposed in the paper. The results show that the grading ring of 600 mm diameter and 60 mm pipe diameter can meet the requirement of anti-corona noise for insulator string in 4 000 m altitude region.
出处
《南方电网技术》
2013年第4期29-33,共5页
Southern Power System Technology
基金
云南电网公司科技项目(WNJ101-0097)~~
关键词
高海拔
输电线路
均压环
电场分布
电压分布
high altitude
transmission line
grading ring
electric field distribution
voltage distribution
