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I现代住宅小区10/0.4KV供电系统设计摘要本次设计的课题是住宅小区10kV供电系统的一次设计。依据配电自动化的内容和国内外配电自动化的发展现状，本着“安全性、可靠性、经济性以及易维护性”的原则，完成了本次设计。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。供电系统采用的是降压箱式变电站，具有10kV和380V两个电压等级，10kV一侧接与小区旁边经过的110kV变电站的10kV母线，380V主要用于小区用户及小区公共场所的用电。关键词：箱式变电站，短路计算，无功补偿，接地IITHEPOWERSUPPLYSYSTEMDESIGNOFRESIDENTIALAbstract:Thedesignofthisresidentialareaisthesubjectofthepreliminarydesignof10kVpowersupplysystem.Thedevelopmentpresentconditionthatcontentsanddomesticandinternationalpowerdistributionthatautomatesaccordingtothepowerdistributionautomate.Thepowersupplysystemdesignedisveryimportant,ifthesystemisbroken,theentireresidentialareawillaffectthepowersupply,sothehighreliabilityrequirements.Therefore,thedesignmusttakeintoaccountthepowersystemsecurity,reliabilityandeconomy.Withourcountryeachcurrentrelevantspecificationregulationsetc.techniquestandardisbasis,againprovideoriginaldataaccordingtothetaskbook,accordingtointerrelateddataandbook,carryoncomparevsvariousschemebutgetmostsuitablescheme.Thismanualwiringthroughtheresidentialloadcalculation,shortcircuitcurrentcalculation,themainelectricalequipmenttodeterminethemodelandparameters,reactivepowercompensationdesign,lightningprotectionandovervoltageprotection.Thepowerdistributionsystemstep-downbox-typesubstationwith10kVand380V2avoltage,10kVand110kVsubstationsideoftheaccessbus10kV,380Velectricitymainlyforresidentialusers.Keywords:box-typesubstation,short-circuitcalculation,reactivepowercompensation,touchdownIII目录摘要...................................................................................................................IAbstract:...........................................................................................................II目录...............................................................................................................III第1章前言.....................................................................................................11.1课题的国内外现状...............................................................................11.2设计范围...............................................................................................11.3设计原则及标准...................................................................................11.4设计基本思路.......................................................................................3第2章住宅小区负荷的计算.............................................................................42.1概述.......................................................................................................42.2电源及高压供配电系统.......................................................................42.3负荷计算...............................................................................................52.4电气负荷的计算...................................................................................52.4.1住宅小区住户照明用电负荷计算方法：....................................52.4.2其它负荷计算方法：....................................................................62.4.3详细负荷计算：............................................................................7第3章短路电流计算.......................................................................................113.1短路计算的目的及步骤.....................................................................113.1.1短路电流计算的目的..................................................................113.1.2短路电流计算的一般规定..........................................................113.1.3短路电流的计算步骤..................................................................123.2短路电流的计算.................................................................................123.2.1短路计算过程..............................................................................123.2.2短路电流表..................................................................................133.2.3绘制系统等值阻抗网络图..........................................................14第四章住宅小区供配电措施...........................................................................154.1住宅小区供配电特点..........................................................................154.2箱式变的台数与容量、类型的选择.................................................154.2.1变压器的容量选择......................................................................154.2.2变压器的类型选择......................................................................174.2.3箱式变及内部设备的类型选择..................................................184.3高、低压分线设备选择.....................................................................194.3.1高压电缆分支箱的选择..............................................................194.3.2低压电缆分支箱的选择..............................................................194.4高、低压电缆类型及截面型号选择.................................................204.4.1高压电缆的选择..........................................................................20IV4.4.2高压电缆截面选择......................................................................204.4.3低压电缆的选择..........................................................................204.4.4短路计算过程.....................................................