Power substation is an important part of power system. It directly affects the safety and economic operation of the whole power system. It is the intermediate link between power plants and users and plays the role of transformation and distribution of electric energy.
This design uses the workshop substation to introduce the 10KV power supply from the overhead line used in the 35KV/10KV substation of our factory, the cable line length is 5KM, and analyzes the original data of the substation to determine the main connection of the substation. Determine the number, capacity and type of main transformer through load calculation. According to the result of short circuit calculation, the primary equipment of substation is selected and checked. At the same time, complete the distribution device layout, lightning protection and grounding device design.
Key words: main electrical connection of substation; short circuit current calculation; primary equipment; lightning protection