论文总字数：28116字

摘 要

本次毕业设计主要介绍220kV区域变电站电气一次部分的设计内容和设计方法。对原始资料进行分析和计算，在对主变压器容量及型号选择；在此基础上进行220kV变电站的主接线方案的拟定，以及最终方案的确定，短路电流的计算，设备选择及校验，站用电系统的设计，防雷和接地的设计，配电装置的选择和布置，还有继电保护的设计。

关键词：变电站；短路电流计算；设备选择；变压器；主接线

ABSTRACT

This graduation design mainly introduces the content and method of 220kV regional electrical substation design. First of all, analyse the original data and calculate it, select the main transformer capacity and model.Second, draft the scheme of main 220kV electrical substation, final determines the scheme. short-circuit current calculation, equipment selection and calibration, the electric system design, lightning protection and grounding design, selection and layout of power distribution equipment, and the design of relay protection.

Key Words:Substation;Short-Circuit current calculation; Equipment selection; Transformer

目 录

摘要.......................................................................................................................I

ABSTRACT......................................................................................................II

第一章 绪论........................................................................................................1

第二章 概述........................................................................................................3

第三章 主变压器的选择.................................................................................7

第四章 主接线设计.........................................................................................11

4.1主接线设计的基本要求及原则................................................................11

4.2主接线方案的确定....................................................................................12

第五章 变电站用电系统设计.......................................................................15

第六章 短路电流计算......................................................................................17

第七章 电气设备选择......................................................................................22

7.1主要电气设备选择的原则和计算条件......................................................22

7.2主要电气设备选择及校验..........................................................................23

7.3导体选择的校验..........................................................................................23

7.4导体及电气设备选择..................................................................................24

第八章 总平面布置和配电装置布置..........................................................32

8.1总平面布置..................................................................................................32

8.2配电装置设计..............................................................................................32

第九章 防雷及接地设计..................................................................................36

9.1防雷设计......................................................................................................36

9.2接地设计......................................................................................................39

第十章 继电保护装置设计.............................................................................41

10.1电力系统继电保护的概念.......................................................................41

10.2电力系统对继电保护的要求...................................................................41

10.3继电保护装置的配置..............................................................................42

10.4安全自动装置的配置..............................................................................43

结束语...................................................................................................................44

参考文献..............................................................................................................45

致谢........................................................................................................................46

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