毕业设计110-35-10KV变电所设计

变电所设计

北方民族大学 学士学位论文

论文题目:

院(部)名 称: 电气信息工程学院 学 生 姓 名: 陈涛锋 专 业: 自动化 学 号: 20080226 指导教师姓名: 郑彦平 论文提交时间: 2012年4月26日 论文答辩时间: 2012年5月12日 学位授予时间: 2012年6月10日

北方民族大学教务处制

摘 要

变电所设计

随着现代工业时代的不断发展，人们对电力设备供应的要求越来越高，特别是供电

的稳定性、可靠性和可持续性。然而电网的稳定性、可靠性和可持续性往往取决于变电所的合理设计和配置。基于这几方面的考虑，本论文设计了一个降压变电所,本变电所有三个电压等级：高压侧电压为110kv,四回线路；中压侧电压为35kv,七回出线，备用一回；低压侧电压为10kv,十回出线,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SFSZ9-63000/110主变压器，其他设备比如站用变、电流互感器、电压互感器、断路器、隔离开关、高压熔断器、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，尽量做到运行可靠、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。

关键词： 变电所 设计 降压 变压器

ABSTRACT

变电所设计

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 four routes; the middle voltage rate is 35kv

which has seven routes ; the low voltage rate is 10kV, which has ten routes . In the same time ,we select the main equipments for the transformer substation .This article select two main transformer (SFSZ9-63000/110) 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 Step-down Transformer

变电所设计

目 录

前 言 ............................................................................................................................................... 1

第1章 主变压器的选择 ........................................................................................................... 2

1.1 负荷计算 .......................................................................................................................... 2

1.2 主变压器容量、绕组及接线方式 .................................................................................. 2

1.3 冷却方式 .......................................................................................................................... 3

1.4确定主变压器型号及参数 ............................................................................................... 3

第2章 电气主接线方案确定 ................................................................................................... 5

2.1电气主接线设计原则 ....................................................................................................... 5

2.2 确定主接线方案 .............................................................................................................. 5

2.2.1 原始资料分析 ..................................................................................................... 5

2.2.2 各类接线的选用原则 ......................................................................................... 6

2.3.3 拟定方案中设计方案比较 ................................................................................... 7

第3章 短路电流计算 ................................................................................................................... 9

3.1短路计算的目的 ............................................................................................................. 10

3.2短路计算的一般规定 ..................................................................................................... 10

3.3具体短路计算 ................................................................................................................. 11

第4章 导体绝缘子套管电缆的选择 ....................................................................................... 13

4.1母线导体的选择 ............................................................................................................. 14

4.1.1各种导体的特点 .................................................................................................. 14

4.1.2导体选择的一般要求 .......................................................................................... 14

4.2导线的选择 ..................................................................................................................... 15

第5章 电气设备的选择 ........................................................................................................... 18

5.1电气设备选择原则 ......................................................................................................... 19

5.2 断路器的选择 ................................................................................................................ …… 此处隐藏：12955字，全部文档内容请下载后查看。喜欢就下载吧 ……