500kV桂山变电站设计创新技术分析

Technical Analysis of Innovative Design on 500kV Guishan Substation

在500kV桂山变电站电气设计中,利用西高东低的自然地形,在广东电网首次采用阶梯与缓斜坡相结合的电气设备布置方案和500kV线路格构式全联合角钢构架,减少了征地面积和工程量,为变电站选址和总平面布置提供了新思路;主变压器全部入串,500kV线路4个方向进出线,提高了变电站可靠性和经济性。这些创新技术已在广东电网500kV变电站设计中得到推广运用。

In the electric design of 500 kV Guishan Substation,the natural terrain of higher west and lower east was utilized,and the electrical equipment layout combining ladder and grade was first applied in Guangdong power grid with 500 kV line latticed all-joint angle-steel frame,thus reducing land area and engineering amount,and providing new ideas for substation siting and general layout;all transformers joining the 500 kV cluster directly and incoming/outgoing 500 kV lines in 4 directions improve the reliability and economic efficiency of substation.The innovative techniques have been spread in 500 kV substation design in Guangdong power grid.