330 kV双回路下引式窄基钢管终端塔的研究应用

Research and Application of 330 kV Double-circuit Downward-leading Narrow-base Steel Pipe Terminal Tower

在一些新建输变电工程中,由于地形和周围障碍物的限制,变电站无法设置出线门型构架或采用电缆出线,需采用其他出线方式。根据工程实践,研究出一种330 kV双回路下引式窄基钢管终端塔的出线方式,线路通过330 kV支柱绝缘子沿终端塔塔身下引至变电GIS出线套管,解决了户内变电站需特殊设置出线门型构架的问题,使工程整体可行,技术经济效果良好,可供其他类似工程借鉴。

In some newly built urban power transmission and transformation projects,due to the restrictions of terrain and surrounding obstacles,it is not possible to set up a busbar frame for the substation or use cable outlets,so other methods of outlet need to be adopted.According to engineering practice,a method of outletting for a 330 kV doublecircuit downward-leading narrow-base steel pipe terminal tower was studied.The line passes through 330 kV pillar insulators along the tower body to the GIS electrical equipment of the substation,solving the problem of special setting of outlet door frame for indoor substations,making the project feasible as a whole,with good technical and economic effects,which can be used for reference in other similar projects.