摘要本次所设计的课题是110kV变电所的设计，该变电所是一个重要的降压变电所，它主要担任110kV，35kv及10kV电压等级功率交换，把接受功率全部送往10kV侧线路。变电所主要进行短路电流计算，负荷计算，母线选择，变压器的选择,母线，断路器及隔离开关进行选择和判断。对变电所的所在位置进行判断分析，对变电所所在环境进行分析。对变电所的配电装置及变电所的出现进行分析考虑。变电所5到10年的规划，留有一定的余量。保证变电所用电的安全性，和经济实用性。84122

毕业论文关键词：变电站；主变压器；出线；配电装置

毕业设计说明书外文摘要

Title  110kv transformer substation the preliminary part design electricity           

Abstract This design issue is the preliminary design of a 110kV substations, the substation is a step-down substations of regional importance, it engaged primarily in 110kV,35kv and 10kV voltage power exchange, all rushed to accept power 10kV lines。 Substation main short circuit current calculations, load calculation, bus-bar selection, selection of transformers, busbars, circuit breakers and isolating switches for selecting and judging。 Judge the substation location analysis, analysis of the substation environment。 To analyze the emergence of switchgear in substations and substation considering。 Substation 5-10 years of planning, there is a surplus。   Ensure the security of electricity substation, and economic practicality。 

This design paper is take technical standards and so on our country present each related standard regulations as the basis, designs is a preliminary design, provides the firsthand information according to the project description, the reference pertinent data and the books, carries on the comparison to each kind of plan to obtain。

Key words： Transformer substation； Main transformer； Going beyond a line； Power distribution equipment

目次

1 引言 1

2 变电所概况 3

2。1变电所位置分析 3

2。2负荷计算的意义及计算目的 3

2。3变压器的选择 4

3电气主接线设计 7

3。1电气主接线的设计原则 7

4短路电流计算 9

4。1短路电流计算的目的 9

4。2在验算导线和电气设备时所用的短路电流一般有以下规定 9

4。3 短路电流计算的步骤 10

4。4短路电流计算过程 10

5 电气设备及母线的选择 17

5。1选择电气设备和母线的主要技术条件 17

5。2母线及各回出线的选择原则 17

5。3断路器,隔离开关的选择原则 18

5。4  110KV母线,断路器,隔离开关的选择 19

5。5 35KV母线，断路器，隔离开关的选择 21

5。6 10KV母线，断路器，隔离开关的选择 25

5。7变压器10KV侧及母联断路器和隔离开关的选择 27

5。8 各回出线的选择 28

6 防雷与接地方案的设计