摘要:新世纪的到来,我国的各行各业得到了高速的发展,尤其是电力行业,更是得到了快速的发展。目前我国的能源还在存在着很多问题，能源在我国并不能够得到充分利用，并且它在我国分配不均衡。因此，如何通过调整电网建设的布局使电力资源得到最大优化以及如何充分利用我国的可再生资源，实现绿色电能的效果，是我国将来要行走的路。

　　　变电站是电力系统的枢纽部分，它是把一些设备组装起来，用以切断或接通、改变或者调整电压，它是输电和配电的集结点。因此，如何设计变电站结构和方案使电力系统能够安全可靠经济的运行，是电力系统中及其重要的环节。本论文设计的是220kv升压变电站电气部分设计的基本原则、要求、步骤和计算方法。并介绍了部分电气设备的技术数据及参考资料；同时还介绍了变电站设计的有关技术规定；阐述了短路电流的计算方法、电气主接线设计原则及厂用电设计、电气一次设备选择、防雷保护设计等。

　　　本次设计主要流程是根据水电站发出的总装机容量选择主变压器，再进行变电站主接线设计，再根据主接线进行短路计算，然后进行一次设备选择，最后进行变电站的防雷保护设计。

　　　由于本人知识和能力的限制，再加上经验的不足，设计的过程难免会出现不当的地方，望各位老师给予指正。

关键词：升压变电站；主接线方式； 短路电流计算；避雷器

Abstract:The arrival of the new century, all trades and professions of our country has developed rapidly, especially in the power industry, it is obtained the fast development.At present, the sources of energy of our country still exists many problems, the sources of energy in our country can not be fully utilized, and the uneven distribution of it in our country.Therefore, how to adjust the power grid construction layout of the power resources are the greatest optimization and how to make full use of China's renewable resources, realize green electricity effect, China is going to walk.      

　　　 Substation is the power system of the hub portion, it is to put some equipment assembly, used to cut off or connect, change or adjust the voltage, it is the transmission and distribution point.Therefore, how to design the structure and the scheme of the substation of power system safe and reliable and economic operation, is the power system and the important link.In this paper the design of the 220kV step-up substation electrical design of the basic principles, requirements, procedures and calculation method.It also introduces some electrical equipment and technical data and the reference data; it also introduces the design of transformer substation the technical requirements; elaborated the method of short circuit current calculation, the main electrical wiring design principle and electric power plant design, electric equipment selection, lightning protection design.

　　　 The design process is based on a total installed capacity of hydropower station main transformer substation main wiring design, then, according to the main wiring for short circuit calculation, and then a selection of equipment, the substation lightning protection design.     

　　　 Because I have knowledge and ability, coupled with the lack of experience, the design process will inevitably be inappropriate places, hope that the teacher gives. 

Key words:Booster substation；main wiring；short-circuit calculation；lightning arrester