摘要
通过对云南地区近年来雷击跳闸以及雷电活动情况进行统计调查分析,运用电磁暂态模型对500 kV紧凑型输电线路雷电反击机理进行研究分析,结果表明,紧凑型输电线路耐雷水平随着海拔高度的增加而有所下降;接地电阻、杆塔高度对紧凑型线路反击耐雷水平的影响要略小于常规线路。
Back stroke on compact transmission lines is an important cause of trip-out. The results, through the statistical investigation and analysis of the lightning trip-out and lightning activity of Yunnan province in recent years, using the electromagnetic transient model to research back stroke mechanism of 500 kV compact transmission lines, show that the back stroke lighting protection performance level of compact transmission lines decreased as the increase of altitude; grounding resistance, tower height of tower have a slighter effect on back stroke lighting protection level of compact transmission than that of routine ones.
出处
《云南电力技术》
2016年第1期110-114,共5页
Yunnan Electric Power
关键词
紧凑型输电线路
反击
防雷性能
compact transmission line
back stroke
lighting protection performance
