Based on the core concept of "standardized prefabrication", State Grid Corporation of China has adopted prefabricated cabin structures for outdoor smart substations as a key measure to house secondary equipment. With the accelerated development of smart grids, traditional substation construction has struggled to keep pace. To shorten construction cycles, State Grid introduced the Standardized Prefabricated Substation model, implementing: Standardized design, Factory production, Modular construction. This approach enables rapid deployment and practical application of prefabricated cabins.

Prefabricated cabins represent a significant advancement in smart substation technology, incorporating new materials and equipment. They consist of prefabricated enclosures, secondary equipment panels/racks, and auxiliary facilities. These components are manufactured, assembled, wired, and tested in the factory before being transported as complete units to project sites for installation on prepared foundations. Prefabricated cabins with integrated secondary equipment enable complete factory integration, reducing on-site wiring and minimizing design, construction, and commissioning efforts. This approach streamlines maintenance while shortening project timelines, effectively supporting rapid grid expansion.

Prefabricated cabins feature standardized, modular, and prefabricated technical characteristics. Manufacturers can customize dimensions according to actual equipment cabinet requirements to ensure proper operational functionality.