某小区供配电系统设计

南阳理工学院本科生毕业设计（论文）学院（系）：电子与电气工程学院专业：电气工程及其自动化学生：指导教师：完成日期2014年5月南阳理工学院本科生毕业设计（论文）某小区供配电系统设计DesignforthePowerSupplyanddistributionsystemofaresidencecommunity总计：36页表格：10个插图：9幅南阳理工学院本科毕业设计（论文）某小区供配电系统设计DesignforthePowerSupplyanddistributionsystemofaresidencecommunity学院：电子与电气工程学院专业：电气工程及其自动化学生姓名：学号：指导教师（职称）：评阅教师：完成日期：南阳理工学院NanyangInstituteofTechnology某小区供配电系统设计I某小区供配电系统设计［摘要］住宅小区供配电系统的稳定运行直接影响着人们的日常生活及秩序。因此研究小区供配电系统如何更好的实现安全、可靠、经济运行具有现实的意义。本课题初步对住宅小区的供配电系统进行设计，并根据国家相关标准对所设计的内容进行规范化。分析小区的原始数据和供电特点，对小区各类负荷进行计算；通过计算负荷选择变压器的容量和数目完成变电所的设计；合理选择电气主接线方式；根据短路电流选择合适的电力电缆；确定建筑物防雷等级，做好小区的防雷接地保护。设计过程中不仅要保证供电的质量和安全性，还应尽量满足供电的经济性，节省能源和材料。［关键词］计算负荷；短路电流；变压器；供配电设计；防雷接地DesignforthePowerSupplyandDistributionSystemofaResidenceCommunityElectricalEngineeringandAutomationSpecialtyMAJun-yaoAbstract:Residencecommunityforsafeandreliableoperationofthedistributionsystemdirectlyaffectspeople'sdailylives.Thisprojectisinitiallydesignedforthepowersupplyanddistributionsystemoftheresidencecommunity.Andalsothedesignisnormalizedinaccordancewiththerelevantnationalregulationsandstandards.Sothepowersupplyanddistributionsysteminresidencecommunitydistricthowtorealizethesafe,reliableandeconomicoperationhasrealisticmeaning.Analysistherawdatafortheresidencecommunityandloadcalculationoftheresidencecommunity.Basedonthecalculatedloadthemeasuresofpowersupplyanddistributionoftheresidencecommunityisdesigned.Itincludestheelectricmainwiringdesign,transformeranddistributionsubstationdesign.Meanwhiletheappropriateelectricpowercableareselectedaccordingtotheshort-circuitcurrent.Andtheprotectiondesignaboutgroundingforlightningisalsoessential.Notonlymustthequalityandsafetyofpowersupplybeensured,butalsotheeconomicalpowersupply,energy-savingandmaterial-savingshouldbemetasmuchaspossible.Keywords:Loadcalculation;Short-circuitcurrent;Transformer;Powersupplyanddistributiondesign;Groundingforlightning目录某小区供配电系统设计II1引言....................................................................11.1住宅小区供配电系统现状及研究意义..................................11.2本工程供配电系统概述及相关原则....................................12负荷的计算..............................................................22.1负荷分级以及要求..................................................22.1.1负荷分级和供电电源要求.......................................22.1.2本工程建筑的负荷类型.........................................32.2计算负荷概述......................................................42.2.1概述.........................................................42.2.2计算负荷的步骤...............................................52.2.3本工程负荷计算...............................................82.3无功补偿.........................................................102.3.1无功补偿的目的..............................................102.3.2无功补偿的方法..............................................102.3.3无功补偿容量................................................113短路电流的计算.........................................................123.1短路计算的目的...................................................123.2无限大容量电源条件下短路电流的计算...............................123.2.1短路电流计算基本步骤........................................123.2.3本工程短路电流计算..........................................144本工程供配电措施设计方案...............................................164.1供配电系统概述...................................................164.2变电所的设计.....................................................164.2.1变电所位置及环境............................................164.2.2变压器容量和数目的选取原则..................................174.2.3变压器容量及数目的选择......................................184.2.4变压器类型的选择............................................214.2.5本工程变电所的设计..........................................214.3电气主接线方式的设计.............................................224.3.1高压电气主接线..............................................224.3.2低压电气主接线..............................................224.4配电系统线路的设计...............................................234.4.1配电线路的接线方式..........................................234.4.2本工程选用的接线方式........................................24某小区供配电系统设计III4.5电缆的选择.......................................................244.5.1电缆型号选择................................................244.5.2电缆的敷设..................................................254.5.3电缆截面积的选用原则........................................254.5.4高压侧电缆截面积的选择......................................264.6本工程设计说明...................................................275防雷接地保护...........................................................285.1防雷保护系统.....................................................295.1.1建筑物的防雷分类............................................295.1.2本工程建筑物防雷保护........................................295.2接地保护系统.....................................................305.2.1接地方式....................................................305.2.2本工程采用的接地方式........................................305.3等电位联结.......................................................31结束语...................................................................32参考文献.................................................................33附录.....................................................