摘要
雷电绕击是关系到特(超)高压输电线路安全稳定运行的关键问题之一。针对特(超)高压输电线路的特点,在总结前人研究结果的基础上,提出适用于特(超)高压线路的雷电上行先导起始判据,建立了基于先导发展法的绕击模型,并以日本特高压同塔双回线路的运行经验对模型进行了验证。基于该模型,对不同地形条件下、考虑线路运行电压的特高压直流线路的雷击问题进行研究,为改善线路的防雷性能提供帮助。
Shielding failure of lightning is the key problem for safe operation of UHV transmission lines. By taking the features of UHV transmission lines into account, the criterion of upward leader inception is proposed. A model of the evaluation of lightning shielding failure of transmission line based on the leader progress method is established. The model is verified by comparing with the operation data of UHV line in Japan. The shielding fature problem of a typical UHVDC transmission lines under different terrian conditions is studied. The research work will be useful for improving the lightning performance of UHV transmission lines.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2008年第10期2041-2046,共6页
High Voltage Engineering
基金
国家自然科学基金(50777035)
国家"十一五"科技支撑计划资助项目(2006BAA02A19)~~
关键词
绕击
上行先导
特高压
输电线路
雷电防护
高压直流
shielding failure
upward leader
UHV
transmission line
lightning protection
HVDC
