漫湾水电站500kV变电站设计及其特点

The design of 500 kV substation of Manwan Hydropower Station and its characteristics

漫湾水电站５００ｋＶ变电站由于受地形条件和枢纽总体布置的限制，采用竖向多层重叠的布置形式，ＧＩＳ开关楼布置在主厂房和安装间顶上，５００ｋＶ出线构架和电抗器出线构架又布置在ＧＩＳ楼屋顶，总的结构高度达７５．５ｍ。变电站占地面积小，节省了大量的开挖工程量。

Limited by topographic condition and general project layout,the 500 kV substation of Manwan Hydropower Station is arranged in form of a close structure in the horizontal plane and layer overlapping in vertical direction.The GIS tower is arranged in the top of main power house and erection bay and the outgoing frames of 500 kV power line and reactor line are arranged in the roof of GIS tower.The total height of the structure is 75 5 m.Therefore,the land area occupied by the substation is small which saves a large amount of excavation quantities and has an obvious economic benefits.