Abstract
This thesis mainly designs electric primary system and second system in switchgear of XiangYuShangCheng. The electric primary system is about main electric equipments, including automatic switch of dual power、circuit breakers、disconnectors、bus etc ,chosen according to the result of power calculation. The electric second system is used to control and protect the electric primary system. And in this thesis, the electric second system mainly designs the control of electric blower, which acts in fire-fighting system. Finally, there are amount of AutoCAD illustrations attached, including electric primary system、protection and control of blower.
The process of the graduation design is a process of combining the theory with practice. The comprehensive and system training is helpful to enhance and consolidate the understanding and application of the branch curriculum of the electric subject, to set up the project idea and to improve the ability of the electrical system design.
Keywords：electrical design, electric primary system, electric second system
