毕业设计池小佳-四川大学网络教育学院

四川大学网络教育学院

本科生（业余）毕业设计

题目调度自动化系统体系结构设计办学学院四川大学电气信息学院

教学部汕头经济干部学校

专业电气工程及其自动化

年级05秋

指导教师吕林

学生姓名池小小佳

学号VH1052U2008

2007年09月1日

110－35－10变电站设计

学生:池小佳指导教师:吕林

摘要

随着工业时代的不断发展，人们对电力供应的要求越来越高，特别是供电的稳固性、可靠性和持续性。然而电网的稳固性、可靠性和持续性往往取决于变电站的合理设计和配置。一个典型的变电站要求变电设备运行可靠、操作灵活、经济合理、扩建方便。出于这几方面的考虑，本论文设计了一个降压变电站,此变电站有三个电压等级：高压侧电压为110kv,有二回线路；中压侧电压为35kv,有六回出线；其中有四回出线是双回路供电。低压侧电压为10kv,有八回出线,其中有六回是双回路供电。同时对于变电站内的主设备进行合理的选型。本设计选择选择两台SFSZL-31500/110主变压器，其他设备如站用变，断路器，隔离开关，电流互感器，高压熔断器，电压互感器，无功补偿装置和继电保护装置等等也按照具体要求进行选型、设计和配置，力求做到运行可靠，操作简单、方便，经济合理，具有扩建的可能性和改变运行方式时的灵活性。使其更加贴合实际，更具现实意义。

关键字：变电站设计

Devise A 110－35－10 Substation

student:XiaoJia-Chi supervisor:Lv-Lin

Abstract

With the development of the industry times, people bring up higher requests to the electric power supply, especially to the stability、reliability and endurance .But the stability 、reliability and endurance of the electrical network often rely on the transformer substation’s rationality and disposition. One typical transformer substation requests the equipments in it work reliably, operate nimbly, being carried on reasonably and easy to be expended .Refer to these several reasons, in this article we devise a transformer substation for abasing voltage, which has three voltage rates: the high voltage rate is 110kV,which has two routes; the middle voltage rate is 35kv , which has six routes and four of them have double routes; the low voltage rate is 10kV, which has eight routes and six of them have double routes. In the same time ,we select the main equipments for the transformer substation .This article select two main transformer (SFSZL-31500/110) and other equipments, for example : transformer used for substation ,breaker , isolator ,current transformer, voltage transformer, high

voltage fuse ,Idle work compensator ,the protecting equipments and so on are also selected ,devised and disposed according to the actual fact. What’s more, we try our best to mange to make the substation work reliably, operate nimbly, be carried on reasonably and easy to be expended. So that it can close the fact more.

Key word : transformer substation device

目录

第一章电气主接线的设计 (6)

1.1原始资料分析 (6)

1.2主结线的设计 (6)

1.3主变压器的选择 (11)

1.4变电站运行方式的确定 (12)

第二章短路电流计算 (13)

第三章电气设备的选择 (14)

3.1断路器的选择 (14)

3.2隔离开关的选择 (15)

3.3电流互感器的选择 (16)

3.4电压互感器的选择 (16)

3.5熔断器的选择 (17)

3.6无功补偿装置 (18)

3.7避雷器的选择 (18)

第四章导体绝缘子套管电缆 (20)

4.1母线导体选择 (20)

4.2电缆选择 (21)

4.3绝缘子选择 (21)

4.4出线导体选择 (22)

第五章配电装置 (23)

第六章继电保护装置 (25)

6.1变压器保护 (25)

6.2母线保护 (26)

6.3线路保护 (27)

6.4自动装置 (27)

第七章站用电系统 (29)

第八章结束语 (31)