Abstract
The main task of this graduation project is a factory 6KV electrical substation design. Design includes: step-down substation location selection overall; the whole plant after load of the number of transformers, capacity and run the form to make a choice, but also a reasonable selection of high-voltage equipment; longer secondary circuit design and verification; finalize the total electrical power system substation drawing drawing, design and calculation of the formation of the instructions. The Graduation Project will design a set of safe, reliable, high quality, economical power supply step-down substations to ensure the plant's normal industrial production, improve product quality, improve labor productivity. This design can also become part of the electrical substation design similar plant samples, and similar plant transformation substation electrical system design for reference, to promote the development of power system design. Key words substation;Electrical Equipment;Electrical system design;Power system Relay protection;Secondary Circuit of Choice