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兰州交通大学毕业设计（论文）-I-摘要本设计为兰州铁路局下西院住宅小区12号楼照明供配电系统设计。设计负荷等级为三级，进线电压为380/220V，户用电负荷为6千瓦。设计内容包括：照度计算、负荷计算、导线及其截面的选择、低压断路器电流整定、设备制作及安装、等电位联接安装及防雷与接地系统设计。本设计采用单位容量法进行照度计算，采用需用系数法进行负荷计算，按导线长期允许温升和电压损失选择导线截面，按线路最大工作电流和线路保护选择低压断路器。照明回路和插座回路分别由不同回路供电，并在插座回路安装剩余电流保护器。按三类防雷建筑物进行防雷设计，接地采用TN—S系统，并设计总等电位联结和局部等电位联结系统。设计符合国家相关技术规程规范要求，设备选型合理，满足使用功能要求，能较好地指导施工。关键词：住宅；照明；负荷计算；供配电系统；防雷兰州交通大学毕业设计（论文）-II-AbstractThedesignisentitledwithelectricalilluminationdesignonthe12thresidentialbuildinglocatedinXiaxiCourtyardofLanzhouRailwayBureau.Theloadleveloftheprojectisdesignedasthe3rdhierarchy,andinputvoltagelevelispresentedby380/220V,andhouseholdloadisdesignedas6kW.Thedesigncontentsincludeilluminationcalculation,loadcalculation,andtheselectionofcircuitsandcrosssections,andthecurrentsettingoflowvoltagebreaker,andequipmentsmakingandinstallation,andequiotentialbonding,andaswellaslightingprotectionandgroundingsystemandetal.Firstly,unitcapacitymethodisappliedtoimplementilluminationcalculation,andtheneededcoefficientmethodisappliedtoimplementtheloadcalculation,andthecrosssectionsofthecircuitsareselectedaccordingtolong-termallowabletemperatureriseandvoltageloss,andthelow-voltagebreakersareselectedaccordingtothemaximumworkingcurrentandlineprotectionconditions.Socketandlightingcircuitsarearrangedindifferentsupplyloop,andleakageprotectionbreakerisappliedinsocketloop.Lightingprotectionwiththe3rdlevelisdesignedinaccordancewithspecifications,andgroundingsystemadoptsTN-Ssystem,andgeneralequipotentialconnection,togentherlocalequipotentialconnectionisdesigned.Theoveralldesignaccordswiththerelevanttechnicalregulationrequirements.Equipmentsselectionisreasonablesoastobettermeettheapplicablefunctions,andbeabletobetterguidetheconstruction.Keywords：Residential，Illumination，Loadcalculation，Supplyanddistributionsystem，Thunderprotection兰州交通大学毕业设计（论文）-III-目录摘要.....................................................................................................................................IAbstract.....................................................................................................................................II1绪论........................................................................................................................................11.1工程背景.....................................................................................................................11.2设计范围.....................................................................................................................11.3设计依据.....................................................................................................................11.4设计目标.....................................................................................................................11.5本文的主要工作.........................................................................................................22照明平面图............................................................................................................................32.1单元照明平面图设计.................................................................................................32.1.1照度确定..........................................................................................................32.1.2光源和灯具的选择..........................................................................................32.1.3单位容量法计算各房间负荷..........................................................................42.1.4开关的选择......................................................................................................62.2单元插座平面图设计.................................................................................................72.2.1插座的配置......................................................................................................72.2.2插座的选择......................................................................................................83照明配电系统图..................................................................................................................103.1照明负荷计算...........................................................................................................103.1.1需用系数法....................................................................................................103.1.2负荷计算........................................................................................................113.2导线、电缆及低压电器的设计...............................................................................133.2.1导线、电缆及低压电器设计原则................................................................133.2.2导线、电缆及低压电器选择........................................................................154箱体制作及安装..................................................................................................................184.1总配电箱的制作及安装............................................................................................184.2分配电箱的制作及安装...........................................................................................184.3分户箱的制作及安装.......................................