国内500kV变电所的配电构支架，一般是采用8mm左右的厚壁铜管电焊结构，并对支撑构架内实施现场浇灌实心检以满足其强度需求。此方法钢材和水泥耗用较多，现场电焊工作量大，构支架树立施工工艺比较复杂，浇灌的破的质量也很难保证。1997年底建成投运的500kV金华变电所其变电构 The distribution brackets of domestic 500kV substations generally use about 8mm thick-wall copper pipe welding structures, and in-situ watering tests are carried out within the support frame to meet their strength requirements. This method consumes more steel and cement, and has a large amount of on-site welding work. It is more complicated to erect the construction process of the bracket, and the quality of the broken water can hardly be guaranteed. The 500kV Jinhua Substation completed and put into operation at the end of 1997