高海拔 500 kV 输电线路绝缘子污闪特性试验研究

Ｒesearch on Pollution Flashover Performance of Insulators on 500 kV Transmission Lines in High Altitude Area

摘要:

针对 500 kV 交流输电线路高海拔问题，利用西藏高海拔实验基地人工污秽实验室和北京人工污秽实验室，分 别对 500 kV 输电线路工程用典型绝缘子进行了高海拔真实环境和平原地区下的不同污秽条件的人工污秽实验，得到 了典型盐密下的绝缘子串的闪络电压，以及闪络电压与海拔高度之间的关系曲线。

Abstract:

In pollution laboratories of high altitude test base in Tibet and UHVDC test base in Beijing，artificial pollution tests of insulators adopted in 500 kV transmission projects are carried out both in plain regions and real high altitude regions， through which flashover voltages at typical ESDD are obtained． Ｒelation curve between altitude and flashover voltage is acquired as well． According to the test results，insulator units and string length are also recommended for 500 kV transmission lines in high altitude area．