Substation architecture is a general term for the primary supporting structures of outdoor conductors and equipment in substation buildings and transformer stations. It is determined based on the voltage level, scale, equipment layout, construction and operation conditions, as well as the local climate. Due to the nature of electricity, different voltage levels require specific distances to be maintained between conductors, conductors to the ground, and conductors to structures, hence the characteristic of transformer architecture is tall columns with slender cross-sections, classifying it as a structure with high flexibility.

Its application categories include entry-line racks, busbar racks, gantry racks, corner racks, transformer assembly racks, and single-pole equipment supports, etc.

外形 Classification, common structural forms include AH type incoming and outgoing line structure, A type with lightning rod support incoming and outgoing line structure, A type structure, Aח type structure, type structure, corner structure, large character structure, and pull-line equipped incoming and outgoing line structure, etc.

For structural load-bearing classification, the structures include: intermediate structure, terminal structure, and tensioning wire structure.