小区供配电设计

本科毕业设计(论文)题目沁园小区配电设计学院名称电气工程与自动化学院专业班级电气工程及其自动化专业学生姓名丛海红导师姓名肖中俊2012年06月02日目录摘要..........................................................1ABSTRACT......................................................2第一章绪论..................................................31.1引言................................................................31.2供电设计的一般原则................................................31.3设计内容及步骤.....................................................31.4设计所需要做的工作................................................5第二章负荷计算.......................................52.1负荷计算的方法.....................................................52.2小区总的计算负荷..................................................62.3无功功率补偿.......................................................82.3.1提高功率因数的意义.............................................82.3.2小区无功补偿容量的计算.........................................9第三章变电所位置及主变压器和主接线方案的设计..........103.1变电所位置的选择..........................................103.2变电所主变压器的选择......................................113.2.1变压器选型的原则........................................113.2.2变压器出力计算..........................................123.3变电所主变压器和主接线方案的选择..........................133.3.1变配电所主接线的选择原则与一般要求......................133.3.2主接线方案选择..........................................14第四章短路计算及变电所高低压侧电气设备的选型和校验....154.1短路电流的基本概念........................................154.2短路电流计算..............................................164.2.1绘制计算电路...........................................164.2.2确定基准值.............................................164.2.3计算短路电路中个元件的电抗标幺值........................174.2.4计算k-1点（10.5kV侧）的短路电流总阻抗及三相短路电流和短路容量.........................................................174.2.5计算k-2点（0.4kV侧）的短路电路总电抗及三相短路电流和短路容量...........................................................18第五章变电所电气设备的选型和校验.....................18II5.1电气设备选择的一般条件....................................195.1.1按正常工作条件选择电气设备..............................195.1.2按短路状态进行校验......................................195.1.3断路器、隔离开关的短路稳定度校验........................205.1.4熔断器的校验...........................................205.1.5电流互感器的短路稳定度校验..............................205.1.6电压互感器的校验........................................215.2高压母线以上电气设备的选择与校验..........................215.3高压母线到变压器高压侧间电气设备的选择与校验..............215.4变压器低压侧电气设备的选择与校验..........................22第六章变电站进出线的选择与校验.......................226.1高低压母线的选择与校验....................................226.2变电站进出线和与邻近单位联络线的选择......................226.2.110kV高压进线和引入电缆的选择...........................226.2.2邻近单位高压联络线的选择................................246.2.3380V低压出线的选择.....................................24第七章变电所二次回路设计及继电保护整定...............267.1二次回路..................................................267.2小区供配电系统的保护......................................277.2.1继电保护装置的任务......................................277.2.2继电保护装置的组成......................................287.3变电所的保护装置..........................................287.3.1变压器继电保护..........................................287.3.210KV侧继电保护.........................................297.3.3380V侧低压断路器保护...................................30第八章小区防雷接地...................................308.1小区变配电所的防雷........................................318.1.1变电所直击雷防护........................................328.1.2防止由电源线路进入的过电压..............................328.1.3避雷针的设置...........................................338.2接地装置的设计............................................358.2.1防雷引下线设计..........................................358.2.2防雷接地设计...........................................35致谢..................................................37参考文献..............................................38附录..................................................39山东轻工业学院2012届本科生毕业设计（论文）1摘要电能是各行各业生产生活的主要能源和动力，因此做好供配电系统的设计对于各企事业单位及其他所有用电单位的正常工作具有十分重要的意义。随着我国国民经济持续快速稳定增长，人民生活水平不断提高，住宅小区的建设日新月异，大规模住宅小区的建设已成为城市建设的新亮点，人民群众对住房需求越来越高，住宅要求面积大、功能全、适用性好。新建住宅小区配套电力建设，作为小区建设中十分关键的部分，能否保障今后居民可靠供电，将成为影响今后居民生活的重要因素。在本课题的设计中，主要对生活小区的负荷计算、功率补偿、变压器容量和台数的选择、变电所位置和接线的选择与设计、短路电流的计算、主接线和二次回路设计以及继电保护和防雷接地进行了系统的分析与设计。关键词：低压供配电负荷计算功率补偿变压器继电保护防雷保护沁园小区配电系统设计2ABSTRACTTheelectricpoweristhemajorenergyandpowerintheproductionandlifeofallaspectsoflife,soitisofgreatsignificancetodoagoodjobforthedesignofpowersupplyanddistributionsystemforallenterprisesandallotherpowerunitsinthenormalwork.Sincethereformandopenpolicy,ourcountrynationaleconomyhascontinuedthefaststablegrowth,thelivingstandardsenhancesunceasingly,residentialdistrict'sconstructionchangeswitheachnewday,thelarge-scaleresidentialdistrict'sconstructionhasbecomeurbanconstruction'snewluminescentspot,peoplearegettinghigherandhighertothehousingdemand,thehousingrequestareaisbig,thefunctionentire,theserviceabilityisgood.Thenewlybuiltresidentialdistrictnecessaryelectricpowerconstruction,takesintheplotconstructiontheveryessentialpart,whethertosafeguardtheresidenttosupplypowerreliablyfromnowon,willbecometheimportantattributewhichtheinfluencetheresidentwilllivefromnowon.Inthistopic'sdesign,mainlytosmall-unitresidentialarea'sloadcomputation,thepowercompens