What are the differences and advantages between assembled integrated substation and traditional substation?

In recent years, with the continuous development of social economy and the increasing demand of core power, in order to meet the power load and improve the power supply capacity, State Grid Corporation of China put forward the requirement of building a strong smart grid, and smart substations of various voltage levels came into being. The rapid development of electric power construction and electrical installation in Xiangneng Chutian also provides the possibility for building a high-quality, efficient and intensive integrated substation.

The civil construction of assembled comprehensive substation fully embodies the characteristics of "assembled" and adopts the architectural mode of assembled steel structure. The fence, gate, structural support and equipment support of the substation are all fabricated steel structures, and all steel structure members are prefabricated in the factory, realizing industrialized and large-scale production, unified technology and standardized specifications. After all steel structures are manufactured, they will be directly transported to the construction site for hoisting, assembly and erection to complete intensive construction.

The traditional substation adopts reinforced concrete structure, and the construction procedures include concrete pre-mixing, concrete pouring and maintenance, formwork installation and removal, cushion making and pouring, steel bar transportation and binding, etc. The work is complicated, the labor consumption is large, and the required period is long. In addition, the construction and maintenance of concrete structures are greatly influenced by the level of operators and the weather, the construction quality and time limit are not easy to determine, and pouring and handling are easy to cause environmental pollution. Compared with the traditional civil engineering of steel-concrete structure of substation, the assembled comprehensive substation has the characteristics of short construction period, less on-site workload, good quality standard, convenient environmental protection, saving land resources, intensive production and shortening construction period, which makes the substation construction move towards high-tech and refined construction.

The assembly time technology is fully adopted in the civil engineering and electrical installation of assembled integrated substation, which changes the construction mode of traditional substation and builds intelligent substation in two stages: factory production prefabrication and on-site assembly and installation. In the construction of intelligent integrated substation, a series of new technologies, such as prefabricated steel structure building components, integrated assembled electrical equipment and control cables, were applied, which reduced the workload on the construction site, shortened the construction period, controlled the quality, reduced the labor cost and improved the quality and environmental protection benefits. The commissioning of assembled integrated substation will make positive contributions to improving the level of power grid construction and promoting the construction of three-dimensional smart grid.