红星花园小区电气设计计算书.doc

1、目 录摘要：IAbstractII1 绪论11.1 毕业设计的性质和任务11.2 设计概况11.2.1 小区概况11.2.2 设计依据11.2.3 设计要求21.3 本次小区供配电设计的主要内容22 住宅小区的负荷计算22.1 负荷的分类及供电要求22.1.1 电力负荷的含义22.1.2 按对供电可靠性要求的负荷分类32.1.3 本小区的负荷33 变电所位置和形式的选择43.1概述43.2 小区变配电所的布置及结构方案43.2.1 配电室的结构53.3 变电所位置的确定64 主变压器台数和容量的确定74.1 变压器主变台数的选择74.2 变电所主变压器容量的选择75 变电所主接线方案的选择85

2、.1 变电所主接线方案的评价85.2 变电所主接线方案的确定86. 短路电流计算96.1 短路计算的目的及步骤96.1.1 短路电流的原因与危害96.1.2 短路电流计算的目的106.1.3 短路电流计算的一般规定116.2 短路电流计算116.2.1 短路计算主接线图116.2.2 短路计算等效阻抗图126.2.3 电抗标幺值计算126.2.4 高低压短路电流计算书157 电气设备的选择247.1 电气设备选择的一般条件247.1.1 按正常工作条件选择247.1.2 按短路情况校验257.1.3 短路电流计算表267.1.4 短路热效应277.2 各电气设备选择的原则277.2.1 断路器

3、的选择原则277.2.2 电流互感器的选择287.2.3 电压互感器的选择307.3 其它辅助设备选型317.3.1 熔断器的选择317.3.2 隔离开关的选择317.3.3 电容补偿装置的选择328 变电所继电保护设计338.1 概述338.1.1 电力变压器瓦斯保护338.1.2 电力变压器过电流保护338.1.3 电力变压器电流速断保护348.2 变电所10KV母线保护349 高低压侧线路的选择349.1主线路线型选择349.1.1导体材料的选择3410 防雷与接地3710.1防雷电过电压的保护3710.2 避雷器的选择3710.2.1避雷器的分类及配置原则3710.2.2 避雷器的要求

4、3810.2.3避雷器的选择3810.3接地装置3910.3.1接地开关的选择39参考文献40致谢41Contents AbstractIAbstractII1 Introduction11.1 Small zone general situation11.2 Design overview11.2.1 The design gist11.2.2 Design basis11.2.3 Design requirements21.3 Quarters distribution design of the main content22 Load calculation residential ar

5、ea22.1 Classification and load power requirements22.1.1 Power load meaning22.1.2 Classification according to the load on the power supply reliability requirements32.1.3 Residential area load33 Substation location and form of choice43.1 Outline43.2 Variable layout and structure of cell distribution b

6、y program43.2.1 Structure and distribution chamber53.3 Determine the location of the substation64 Main transformer station to determine the number and capacity74.1 Select the number of transformer main transformer station74.2 Capacity of transformer substation75 Select the substation main wiring sch

7、eme85.1 Evaluation of Substation main line scheme85.2 OK substation main wiring scheme86 Short circuit calculation96.1 The purpose and procedures of short circuit calculation96.1.1 Causes and negative short-circuit current96.1.2 The purpose of the short-circuit current calculation106.1.3 General pro

8、visions short-circuit current calculation116.2 Short circuit calculation116.2.1 Short circuit calculation main wiring diagram116.2.2 Calculate the equivalent short-circuit impedance126.2.3 Reactance per unit calculation126.2.4 High and low short-circuit current calculations157 Choose electrical equi

9、pment247.1 General Conditions of electrical equipment selection247.1.1 Select normal operating conditions247.1.2 Check by a short circuit257.1.3 Short-circuit current calculation table267.1.4 Short circuit thermal effects277.2 Electrical equipment selection principle277.2.1 Select principle breaker2

10、77.2.2 Current transformer selection287.2.3 Voltage transformer selection307.3 Auxiliary Equipment Selection317.3.1 Fuse Selection317.3.2 Disconnector selection317.3.3 Select Capacitor Compensator328 Design of substation protection338.1 Outline338.1.1 Power Transformer Gas protection338.1.2 Power tr

11、ansformer overcurrent protection338.1.3 Power transformer current protection348.2 10KV substation busbar protection349 High and low voltage side of the line of choice349.1 Main route type selection349.1.1 Select conductive material3410 Lightning protection and grounding3710.1 Lightning overvoltage p

12、rotection3710.2 Arrester selection3710.2.1 Classification and configuration guidelines arrester3710.2.2 Arrester requirements3810.2.3 Arrester selection3810.3 Grounding3910.3.1 Selection of Grounding Switch39References40Acknowledgements4141红星花园小区电气设计摘要：本次设计是红星花园小区供配电设计，设计内容包括：室内照明设计；室内插座设计；室内弱电布置；强弱

13、电系统图、干线配线图以及小区10kv变电站的设计。在本次设计中的重点是小区变电站的设计。在本次设计中，本着“安全性、可靠性、经济性以及易维护性”的原则，以我国现行的各有关规范规程等技术标准为依据，再根据任务书提供原始资料，参照有关资料及书籍，对各种方案进行比较而得出最为合适的方案。这次设计的主要内容包括小区负荷的计算，短路电流计算，主要电气设备型号和参数的确定，无功补偿设计，防雷保护装置的设计。供电系统采用的是户内变电站，具有10kv和380v两个电压等级，10kv一侧为双电源进线，引自周边的两条10kv高压线，380v主要用于小区用户及小区公共场所的用电，小区低压配电采用的是TN-C-S。关

14、键词：小区配电；配电室；短路计算；无功补偿；备用电源投入Red Garden District Electric DesignAbstract This design is the Shandong Agricultural University South Campus Staff quarters distribution design, the design includes: interior lighting design; interior socket design; interior layout weak; the strength of electrical system

15、diagram, mains wiring diagram and a cell 10kv substation design. Key in this design is the design of the cell substationIn this design, the spirit of safety, reliability, economy and ease of maintenance principle, with the current regulations of the relevant specifications and other technical criteria, and then provide the raw data according to the missi