（xxx届）
本科毕业设计
题目： 专题：
某别墅电气设计
专 业： 姓 名：
指导教师：
班 级： 学 号：
说明书 46 页，图纸 3 页，专题 页，译文 8页
第 I 页
某别墅电气设计
摘要
本工程为三级负荷，供电电源均引自小区变电站，电压等级为380V/220V，采用树干式供电，供电电源引自小区内变电站。
设计内容包括强电和弱电设计两个部分。其中，强电设计包括：配电系统的设计、照明系统设计、插座系统设计及防雷与接地系统的设计；弱电设计包括：有线电视系统的设计、消防系统设计。
照明系统按环保节能标准设计，其中包括照度计算、灯具的选择、照明干线、插座导线截面积的选择以及导线的敷设方式。插座系统按高档住宅标准设计。插座回路与照明回路由不同支路供电，一般插座安装高度为0.3米，空调插座距地高度为1.8米以上，潮湿场所应装设防潮、防溅型的插座接地系统采用TN—C—S系统。防雷系统设计在屋面上装设避雷针与避雷带相结合的接闪器。弱电系统包括消防系统、有线电视系统、电话通信系统、宽带网络系统。所有设计满足用户要求。建筑物为第三类防雷建筑。
关键词：照明设计，供配电系统，防雷接地系统，消防系统。
第 II 页
Electrical design of a villa
Abstract
The project is the three class load, power supply from the transformer substation, voltage level for the 380V\\/220V, the trunk type power supply, the power supply from the area of substation.
The design includes two parts of strong and weak electricity design. Among them, including: power distribution system design, lighting system design, socket system design and lighting protection and grounding system design; weak design include: the design of cable television system, fire fighting system.
Lighting design by environmental and efficiency standards, including illumination calculation, the choice of lamps, lighting line, socket wire cross-sectional area and the choice of wire laying method. Socket system design according to the high-grade residential standards. Outlet circuit and lighting back to the routing of different branch power supply socket is installed, the general height is 0.3 meters, air-conditioning outlet height of 1.8 meters, damp places should be equipped with moisture-proof, splash-proof socket type grounding system using TN - C - S system. Lightning protection system design in roof installed lightning and lightning with a combination of air-termination system. Weak current system including fire system, cable TV, telephone communication system, broadband network system. All the design to meet user requirements. For the third type of building lightning protection building.
Keywords: lighting design，power supply system，lightning protection and
grounding system，fire protection system。
第 III 页
目录
1 绪 论 ........................................................................................................................ 1 1.1目的及意义 .............................................................................................................. 1 1.2研究现状分析 .......................................................................................................... 1 1.3基本任务 .................................................................................................................. 1 2 电气照明系统设计 .................................................................................................... 3 2.1电气照明概述 .......................................................................................................... 3 2.1.1照明的概述 ........................................................................................................... 3 2.1.2照明设计的要求和一些应注意的问题 ............................................................... 3 2.2照明设计的目的和原则 .......................................................................................... 3 2.2.1照明设计的目的 ................................................................................................... 3 2.2.2照明的设计原则 ................................................................................................... 4 2.3照明的方式和种类 .................................................................................................. 4 2.3.1照明方式 ............................................................................................................... 4 2.3.2照明分类 ............................................................................................................... 4 2.4照明灯具的选择 ...................................................................................................... 5 2.5照明计算 .................................................................................................................. 6 2.5.1照明计算的依据 ................................................................................................... 6 2.5.2照度的计算 ........................................................................................................... 7 3 开关和插座的选择 .................................................................................................... 9 3.1开关和插座的种类 .................................................................................................. 9 3.1.1开关的种类 ........................................................................................................... 9 3.1.2插座的种类 ........................................................................................................... 9 3.2开关和插座的安装要求 ........................................................................................ 10 3.3设计方案 ................................................................................................................ 10 4 供配电系统设计 ...................................................................................................... 12 4.1住宅配电设计要求 ................................................................................................ 12 4.2配电线路的保护 .................................................................................................... 12 4.3配电回路及其保护措施方案选择 ........................................................................ 13 4.4负荷分级 ................................................................................................................ 15
第 IV 页
4.4.1供电系统的负荷分级 ......................................................................................... 15 4.5负荷计算 ................................................................................................................ 16 4.5.1负荷计算的原则 ................................................................................................. 16 4.5.2负荷计算的方法 ................................................................................................. 17 4.5.3负荷计算 ............................................................................................................. 18 4.6导线及断路器的选择 ............................................................................................ 22 5 防雷接地系统设计 .................................................................................................. 30 5.1防雷与接地系统概述 ............................................................................................ 30 5.1.1建筑物的防雷等级 ............................................................................................. 30 5.1.2一般的防雷措施 ................................................................................................. 31 5.1.3三级防雷建筑物的防雷措施 ............................................................................. 31 5.2建筑物的防雷装置 ................................................................................................ 31 5.2.1引 下 线 ............................................................................................................. 32 5.2.2接地装置 ............................................................................................................. 32 5.2.3接地方式 ............................................................................................................. 32 5.3建筑物年预计雷击次数 ........................................................................................ 34 6 火灾自动报警及消防联动控制系统 ...................................................................... 35 6.1总则 ........................................................................................................................ 35 6.1.1消防系统的组成 ................................................................................................. 35 6.1.2消防系统的分类 ................................................................................................. 35 6.1.3消防系统的工作原理 ......................................................................................... 36 6.2火灾自动报警系统 ................................................................................................ 36 6.2.1火灾探测器 ......................................................................................................... 36 6.2.2探测器数目的确定 ............................................................................................. 37 6.2.3探测器与区域报警器的连接方式 ..................................................................... 37 6.2.4手动火灾报警按钮 ............................................................................................. 38 6.3消防联动控制系统 ................................................................................................ 38 6.3.1消防控制室 ......................................................................................................... 38 6.3.2消防控制设备对消防系统或设备应有以下控制显示功能 ............................. 38 6.3.3线路的敷设 ......................................................................................................... 38