本科毕业论文(模板)

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本 科 毕 业 设 计(论 文)

110kV某城北降压变电所设计

指导教师 专业年级 学号

08电气自动化

中国 广州 2010-10

摘 要

(给出设计的目的和意义,以及毕业设计的主要结论)

关键词:(填上至少3个能体现毕业设计主要涉及内容的词)

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目 录

目 录

摘 要.............................................................................................................................................. II 第一章 原始资料分析 ................................................................................................................... 1

1.1 设计资料 .......................................................................................................................... 1 1.2 对原始资料的分析计算 .................................................................................................. 1 1.3 本文主要工作 .................................................................................................................. 1 第二章 变电所接入系统设计 ....................................................................................................... 1

2.1 负荷统计 .......................................................................................................................... 2

2.1.1 35kV侧负荷统计 ................................................................................................. 2 2.1.2 10kV侧负荷统计 ................................................................................................. 3 2.2 确定电压等级 .................................................................................................................. 3 2.3 确定回路数 ...................................................................................................................... 3 2.4 确定110KV线路导线的规格、型号 ............................................................................ 3 2.5 110KV线路导线截面选择 ............................................................................................. 3 第三章 变电所地方供电系统设计 ............................................................................................... 5

3.1 35KV线路设计 ............................................................................................................... 5

3.1.1 A所 ....................................................................................................................... 5 3.1.2 B所 ....................................................................................................................... 5 3.1.3 C所 ....................................................................................................................... 5 3.1.4 造纸厂 ................................................................................. 错误!未定义书签。 3.1.5 化工厂 ................................................................................. 错误!未定义书签。 3.1.6 医院 ..................................................................................... 错误!未定义书签。 3.2 10KV线路设计 ............................................................................................................... 6

3.2.1 站甲 ....................................................................................................................... 6 3.2.2 站甲 ....................................................................................................................... 7 3.2.3 毛纺厂 ................................................................................................................... 7 3.2.4 水泥厂 ................................................................................................................... 7 3.2.5 纺织厂 ................................................................................................................... 7 3.2.6 水厂 ....................................................................................................................... 7 3.3 线路设计总结 .................................................................................................................. 7 第四章 110KV****主变选择 ....................................................................................................... 8

4.1 主变方案选择 .................................................................................................................... 8 4.2 主变方案技术比较 ............................................................................................................ 8 4.3 主变容量、参数选择 ........................................................................................................ 8

4.3.1 方案1 .................................................................................................................... 8 4.3.2 方案2 .................................................................................................................... 8 4.3.3 主变主要技术参数选择 ....................................................................................... 9 4.4 主变方案经济比较 ............................................................................................................ 9

4.4.1 主变及其附属设备综合投资比较 ....................................................................... 9 4.4.2 主变年运行费用比较 ........................................................................................... 9 4.5 主变110KV侧分接头选择 .............................................................................................. 9

4.5.1 系统大方式 ........................................................................... 错误!未定义书签。 4.5.2 系统小方式(70%的总容量) ................................................ 错误!未定义书签。

III

第五章 所用变选择 ..................................................................................................................... 11 第六章 主接线设计 ....................................................................................................................... 12

6.1 选择原则 ........................................................................................................................ 12 6.2 110KV主接线设计 .......................................................................................................... 12

6.2.1 方案选择 ............................................................................................................... 12 6.2.2 技术比较 ............................................................................................................... 12 6.3 35KV主接线设计 ......................................................................................................... 13 6.4 10KV主接线设计 ......................................................................................................... 13 6.5 110KV**变一次主接线 ................................................................................................ 13 第七章 短路电流计算 ................................................................................................................... 14

7.1 选择短路电流计算点 ...................................................................................................... 14 7.2 列出发电厂发电机各种数据及短路电流流经的变电所,主变的各种数据 .............. 14 7.3 发电机、变电所电抗的归算 .......................................................................................... 15 7.4各段线路电抗归算 ........................................................................................................... 15 7.5 电抗等值图化简 .............................................................................................................. 16 7.6 计算短路点的短路电流 .................................................................................................. 17

7.6.1 d-1点 .................................................................................................................. 17 7.6.2 d-2点 .................................................................................................................. 18 7.6.3 d-3点 .................................................................................................................. 19

第八章 变电所电气设备选择 ....................................................................................................... 21

8.1 选择设备的基本原则 .................................................................................................... 21 8.2 断路器的选择 .................................................................................................................. 21 8.3 隔离开关的选择 .............................................................................................................. 24 8.4 电流互感器的选择 .......................................................................................................... 26 8.5 电压互感器选择 .............................................................................................................. 29 8.6 避雷器的选择 .................................................................................................................. 30 8.7 主母线选择 ...................................................................................... 错误!未定义书签。 8.8 消弧线圈设计 .................................................................................................................. 31 第九章 继电保护配置 ................................................................................................................... 34

9.1 110KV部分: .................................................................................................................. 34 9.2 35KV部分: .................................................................................................................... 34 9.3 10KV部分: .................................................................................................................... 34 致 谢............................................................................................................................................. 35 参考文献 ......................................................................................................................................... 36 附录................................................................................................................. 错误!未定义书签。

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