摘要
为丰富并联间隙用于在高海拔环境下500kV电压等级线路的绝缘配合研究,在2 100m海拔下对不同结构的500kV输电线路复合绝缘子用并联间隙进行了冲击击穿特性试验,并比较了不同结构并联间隙冲击击穿特性的差异。同时,根据雷电冲击试验和操作冲击结果,参考绝缘子串与并联间隙的绝缘配合原则,得到了合适的并联间隙间距。研究结果表明:3 780mm棒形并联间隙、3 780mm环形并联间隙2种并联间隙适合2 100m海拔的500kV线路工程运用,可满足保护绝缘子及线路绝缘的双重要求。研究结论可为并联间隙的工程设计提供支持。
In order to further research the application of parallel gap device（PGD） in insulating coordination for 500 kV transmission lines at high altitude,we experimentally researched flashover characteristics on 500 kV composite insulator with different PGDs at altitude of 2 100 m,and compared results of different PGDs＇ flashover characteristics.Meanwhile,according to the experimental results of lightning impulse and switching impulse,appropriate intervals of PGD were gained after taking the insulating coordination principle between insulator and PGD into consideration：3 780 mm stick type PGD and 3 780 mm ring type PGD were suitable for engineering use of 500 kV lines at altitude of 2 100 m,which could fulfill both insulator protection and line insulating requirements.The results provide a reference for engineering designs of PGD.
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2013年第2期407-414,共8页
High Voltage Engineering
基金
重庆市科委自然科学基金(CSTC2011BB6065)
国家重点基础研究发展计划(973计划)(2009CB724504)
国家自然科学基金(50707036)~~
关键词
并联间隙
500KV输电线路
复合绝缘子
绝缘配合
雷电冲击
操作冲击
parallel gap device
500 kV transmission line
composite insulator
insulating coordination
lightning impulse
switching impulse
