郑州航空工业管理学院毕业设计（论文）内容提要本次设计的课题是住宅小区供电系统的分析与设计，根据设计的基本要求，运用所学的相关知识，查阅相关的资料，进行供电系统的初步设计。本次设计的基本流程是：进行负荷计算，根据负荷计算结果进行变压器的选择并确定供电方案，之后依次进行短路电流的计算，高、低压电器设备的选择和校验，继电保护，防雷与接地保护等。在这一框架下，按照国家的标准，结合小区实际情况完成设计。本次设计考虑到了供电系统的安全、可靠、灵活、经济四项基本要求，在选择供电方案和电器设备时，优先选择低能耗并且满足设计要求的方案和设备，除此以外，还考虑到了小区未来的负荷发展情况，做到了远近期的结合，留有扩建的可能性。关键词:负荷统计；变压器选择；短路计算；继电保护AbstractThesubjectofthisgraduationprojectisthedesignoftheresidenceareapowersupplysystem.Accordingtothebasicrequirementsofthedesign,usingoftherelevantknowledge,searchingrelevantinformation.Beginthedesignofthepowersupplysystem.Thebasicprocessofdesignisloadstatistics,accordingtotheloadcalculationresultstoselectthetransformer,thenbegintheShort-circuitcalculation,selectionandcalibrationofhighandlowvoltageelectricalequipment,relayprotection,lightningarrestandgroundingprotection,Inthisframework,accordingtothenationalstandards,combinedwiththeactualsituationofresidentialtocompletethegraduationproject.Thisdesignconsiderationstothepowersupplysystemofsafe,reliable,flexibleandeconomicfourbasicrequirements,inthechoiceofpowersupplyplanandelectricalequipment,preferredselectlowenergyconsumeandmeetthedesignrequirementsoftheplanandequipment.Besides,considertotheresidentialfutureoftheloads,combinationofrecentandforward,itsupportthepossibilityoftheexpansion.Keywords:Loadstatistics;Transformerselection;Short-circuitcalculation;Relayprotection目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc357071533"1引言PAGEREF_Toc357071533\h-1-HYPERLINK\l"_Toc357071534"2负荷计算PAGEREF_Toc357071534\h-2-HYPERLINK\l"_Toc357071535"2.1供电负荷的分析PAGEREF_Toc357071535\h-2-HYPERLINK\l"_Toc357071536"2.2供电负荷的计算PAGEREF_Toc357071536\h-3-HYPERLINK\l"_Toc357071537"3供电方案的确定PAGEREF_Toc357071537\h-5-HYPERLINK\l"_Toc357071538"3.1主接线方案原则PAGEREF_Toc357071538\h-5-HYPERLINK\l"_Toc357071539"3.2主接线方案设计PAGEREF_Toc357071539\h-5-HYPERLINK\l"_Toc357071540"4变压器及线路的选择PAGEREF_Toc357071540\h-6-HYPERLINK\l"_Toc357071541"4.1变压器台数的选择PAGEREF_