The concept of "standardized design, factory prefabricated, integrated construction” has realized the transformation of substations from “construction” to “procurement” The construction period of substations can be shorten by 50% and occupied land can be reduced by 30%, and the overall investment cost is reduced by about 5%, which can be applied widely in power grid substation, new energy power generation booster station, rail transit traction substations and substations in the industrial and mining fields.