Transformer Substation, also known as a pre-fabricated substation or integrated transformer substation, is a compact indoor and outdoor power distribution equipment that integrates high-voltage switchgear, power distribution transformers, and low-voltage distribution equipment according to the wiring scheme. It combines transformer voltage reduction and low-voltage distribution functions organically, installed in a moisture-proof, rust-proof, dust-proof, rodent-proof, fire-proof, theft-proof, insulated, fully enclosed, and mobile steel structure box. It is particularly suitable for urban grid construction and transformation and represents a new type of substation that has emerged after civil engineering substations. The transformer substation is applicable to mines, industrial enterprises, oil and gas fields, and wind power stations, replacing the original civil engineering power distribution rooms and substations to become a new type of integrated transformer and distribution unit.