西藏霍尔220 kV变电站电气一次设计总结

Summary of the Electrical Design of Tibet Huoer 220 kV Substation

霍尔220 kV变电站属于阿里藏中联网工程的中间站,站址海拔高度4700 m,极端最低气温-41.4℃,面临强紫外线大风沙的户外恶劣环境。这种高原极寒地区的变电站电气设计有其自身特点。本文对该站的绝缘配合、空气间隙、设备选型及布置、站用电系统、防雷接地、电缆选型及敷设等设计内容进行归纳总结。

Huoer 220 kV substation is an intermediate station of the ali-Tibet central networking project,with an altitude of 4700 m and an extreme minimum temperature of-41.4℃.It faces a harsh outdoor environment with strong ultraviolet rays and wind and sand.This kind of electrical substation design has its own characteristics.This paper summarizes the design contents of the station such as insulation level,air gap,equipment selection and arrangement,station electricity system,lightning protection grounding,cable selection and laying.