高海拔地区500kV输电线路用复合绝缘子与并联间隙的绝缘配合  

Insulating Coordination Between Composite Insulator and Parallel Gap Device of 500 kV Transmission Line at High Altitude Area

作　　者：杨庆[1] 董岳[1] 叶轩[1] 司马文霞[1] 张智[1] 罗兵 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400030 [2]南方电网科学研究院,广州510080

出　　处：《高电压技术》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)~~

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.

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 

分 类 号：TM216[一般工业技术—材料科学与工程]