某办公楼的电气设计

目录

1 前言....................................................... - 1 -

1.1建筑电气简介 (1)

1.2工程概况 (1)

1.3设计原则 (1)

1.4设计内容 (1)

1.4.1电气照明系统设计 (2)

1.4.2低压配电系统 (2)

1.4.3防雷接地系统 (2)

2电气照明系统设计............................................. - 3 -

2.1总则 (3)

2.2办公楼电气设计需求分析 (3)

2.3光源选择 (3)

2.4照明灯具选择 (4)

2.5设计结果 (5)

2.6照度计算 (5)

2.6.1本设计采用利用系数法计算灯具数量....................... - 5 - 3低压配电系统设计............................................. - 8 -

3.1负荷等级及供电要求 (8)

3.1.1负荷等级分类 (8)

3.2负荷计算 (8)

3.2.1计算照明负荷 (8)

3.2.2断路器的选择 (11)

3.3设备选型结果 (13)

3.4配电方式 (13)

4防雷接地系统设计............................................ - 15 -

4.1建筑物的防雷简介 (15)

4.2本次工程分析 (15)

4.3第三类防雷建筑物的防雷措施 (16)

4.4本建筑物防雷接地系统设计 (18)

4.4.1屋顶防雷系统设计 (18)

4.4.2接地系统设计 (18)

5结论 ..................................................... - 20 -参考文献..................................................... - 21 -致谢....................................................... - 22 -附录......................................................... - 23 -

摘要

本次毕业设计为合肥市某办公楼的电气设计。在整个设计中，本人依据国家有关的设计规范和标准以及相关专业提供的设计资料，对这个工程的强电系统进行设计。设计的主要内容包括低压配电系统、一至三层电气照明系统及防雷接地系统，照明系统主要说明一般照明灯具及插座的选择，照度及照明计算负荷计算，应急照明的选择及安装等，用利用系数法进行计算，计算出各个房间合适的灯具数量。配电及布线方面，设计出各个供电回路相应的配电箱及走线方式，计算出各回路的计算负荷，最后选择好各个回路所需的线缆型号和保护器件型号，满足正常生活和安全的需要。对建筑防雷的设计,主要进行平面图设计。做完本毕业设计对建筑电气有了较为全面的认识。

关键词：电气照明,配电系统,设备选型,防雷接地

ABSTRAC

The graduation design for a building in hefei the electrical design. In the whole design, I according to relevant state design specifications and standards and relevant professional design material, to the project in high voltage system design. The design of the main content including low voltage distribution system, a second floor electrical lighting system and lightningproof grounding system, lighting system that major general lighting lamps and lanterns and socket choice, intensity of illumination and lighting calculation load calculation, emergency lighting selection and installation, etc, with the utilization coefficient method for the calculation, each room right out the lamps and lanterns of quantity. Distribution and wiring, the power supply circuit design each corresponding distribution box and go line way, calculate the calculation of the loop load, and finally choose good each loop the cable，Finish the graduation design of building electrical can have a comprehensive understanding of the architectural electrical design .

Key Words:Electrical lighting; Distribution system;Equipment selection; Lightningproof grounding;