1, 1 10KV substations include electrical primary, electrical secondary, power grid telecontrol, power grid communication, power grid dispatching, civil engineering structure, building, general layout, heating and ventilation, water supply and drainage, photos and communication in the station, etc. And one person can't do all the design.

2. Substation, where the voltage changes. In order to transmit the electric energy of power plant to a long distance, it is necessary to change the voltage into high-voltage electricity, and then reduce the voltage near the users as needed. The work of raising and lowering the voltage depends on the substation. The main equipment of substation is switch and transformer. Depending on the size, the small one is called a substation. Substation is bigger than substation. Substation: generally, it is a step-down substation with a voltage level below 1 10KV; Substation: including "step-up and step-down" substations with various voltage levels.