Prefabricated cabin is a new type of structural carrier for electrical equipment, which has the characteristics of high mechanical strength, good human-machine operation environment, and high safety and reliability while being energy-saving and environmentally friendly. Due to the fact that the primary equipment of the substation is installed and integrated before leaving the factory, it can be directly put into operation upon arrival at the site, changing the original on-site installation and commissioning work method. It has significant advantages such as small footprint, short construction period, and low investment cost. Prefabricated cabins will play a crucial role in the safe and stable operation of intelligent substations.