康平家园小区供配电及照明电气设计计算书.doc

1、目 录摘 要1ABSTRACTII1 工程介绍11.1工程概况11.2设计内容12 电气照明系统12.1 总体介绍12.2 一般照明设计22.2.1一般照明光源及灯具选择22.2.2照度计算32.2.3开关选择52.3插座设计62.3.1电源插座的选用62.3.2电源插座设置位置要求62.3.3插座供电回路62.4应急照明62.4.1应急照明的分类62.4.2应急照明的供电方式72.5负荷计算及设备选择82.6配电方式112.7 小结113 变电所设计部分113.1变电所概况：113.1.1 电力负荷及其计算113.1.2负荷计算的内容和目的113.1.3负荷分级及供电要求113.1.4 电源

2、及供电系统123.1.5 电力负荷的主要计算方法123.1.6利用需要系数法计算负荷123.1.7 计算负荷123.2 变电所所址的选择143.2.1 变电所简介143.2.2 变电所选址143.2.3配变电所所址选择163.3电力变压器的选择163.3.1电力变压器的分类163.3.2 电力变压器台数的选择173.3.3 电力变压器台数和容量的确定173.4功率因数的提高与无功补偿183.4.1 功率因数应达到的规定183.4.2无功功率补偿方式193.4.3 并联电容器无功补偿容量的计算193.5变电所主接线的设计223.5.1主接线的设计原则223.5.2 主接线可靠性的要求223.5.

3、3 主接线灵活性的要求223.5.4 主接线经济性的要求：223.5.5电气主接线的选择和比较233.5.6本变电所主接线方案233.5.7变电所高低压侧主接线方式的选择233.6 短路电流及其计算243.6.1短路电流的概念243.6.2短路电流计算的目的243.6.3短路电流计算的一般规定253.6.4短路计算基本假设253.6.5短路电流计算的步骤253.6.6采用标幺制法计算三相短路电流和短路容量263.7电气设备选择与校验303.7.1概述303.7.2一般原则303.7.3技术条件 313.7.4高压断路器的选择及校验323.7.5低压断路器的选择与校验333.7.6 变电所高、低

4、压线路的选择383.7.7熔断器的选择（FU）383.7.8互感器的选择与校验383.7.9电流互感器的选择393.7.10电压互感器的选择413.7.11母线及电缆的选择及校验423.7.12裸导体的选择条件选择和校验423.7.13电力线路的选择443.7.14开关柜的选择453.8继电保护和自动装置463.8.1 对继电保护装置的基本要求463.8.2 继电保护装置的基本类型463.8.3 线路的电压电流保护463.8.4电力变压器的继电保护464 结 论47参考文献48致 谢49附录50ContentsABSTRACTII1INTRODUCTION TO ENGINEERING11.1

5、 Project profile11.2 Design contents12ELECTRICAL LIGHTING SYSTEM12.1 General introduction12.2 General lighting design22.2.1 General lighting light source and the choice of lamps and lanterns22.2.2 Illumination calculation32.2.3 Selecting switch62.3 Socket design62.3.1 The selection of power socket62

6、.3.2 Power socket set position requirements62.3.3 Plug the power supply circuit62.4 Emergency lighting62.4.1 The classification of the emergency lighting62.4.2 Emergency lighting power supply way72.5 Load calculation and equipment selection82.6 Power distribution system102.7 Brief summary113SUBSTATI

7、ON DESIGN PART113.1Substation design part113.1.1 Power load and its calculation123.1.2 The content and purpose of load calculation123.1.3 Load rating and power requirements123.1.4 Power supply and power supply system133.1.5 The main calculation method of power load133.1.6 Need coefficient method is

8、used to calculate the load133.1.7 calculated load133.2 Substation site by choice153.2.1 Introduction of substation153.2.2 locating the transformer substation163.2.3 Distribution substation site by choice163.3 The choice of power transformer163.3.1 The classification of the power transformer163.3.2 T

9、he classification of the power transformer173.3.3 The determination of power transformer sets and capacity173.4 The improvement of power factor and reactive power compensation183.4.1 The rules of the power factor should be achieved183.4.2 Reactive power compensation mode19 iii3.4.3 Parallel capacito

10、r reactive power compensation capacity calculation193.5 The design of the substation main wiring213.5.1The design principle of main wiring213.5.2 The reliability of the main wiring requirements223.5.3 The main wiring flexibility requirements223.5.4 The economical efficiency of the main wiring requir

11、ements223.5.5 The choice of the main electrical wiring and comparison223.5.6 The substation main wiring scheme223.5.7 The choice of substation high and low voltage side of the main connection mode233.6 Short circuit current and its calculation243.6.1 The concept of short circuit current243.6.2 The p

12、urpose of short-circuit current calculation243.6.3 The general provisions of short-circuit current calculation243.6.4 Short circuit calculation basic assumptions253.6.5 Short circuit current calculation steps253.6.6 Using the MAO method to calculate three phase short circuit current and short circui

13、t capacity263.7 Electrical equipment selection and calibration303.7.1 Summarize303.7.2 General principle303.7.3 Technical condition 303.7.4 The selection of high voltage circuit breaker and check313.7.5 The choice of low voltage circuit breaker and check353.7.6 The choice of high and low voltage lin

14、e substation373.7.7 The choice of fuse (FU)383.7.8 The selection of the transformer and check383.7.9 The choice of current transformer393.7.10 The choice of voltage transformer403.7.11 Busbar and cable selection and calibration423.7.12 Bare conductor selection criteria of selection and validation423.7.13 The choice of power lines443.7.14 The choice of the switchgear453.8 Relay protection and automatic device463.8.1 Basic requirements for the relay protection device463.8.2 The basic types of relay protection device463.8.3 Line voltage current protection