毕业设计说明书设计课题：220KV变电站电气部分设计ⅡPAGE\*MERGEFORMATIII摘要随着经济的发展和现代工业建设的迅速崛起，供电系统的设计越来越全面、系统，工厂用电量迅速增长，对电能质量、技术经济状况、供电的可靠性指标也日益提高，因此对供电设计也有了更高、更完善的要求。设计是否合理，不仅直接影响基建建投资、运行费用和有色金属的消耗量，也会反映在供电的可靠性和安全生产方面，它和企业的经济效益、设备人身安全密切相关。本设计讨论的是220KV变电站电气部分的设计。首先对原始资料进行分析，选择主变压器，在此基础上进行主接线设计，再进行电气总平面的布置及配电装置的设计，变压器的选择，然后进行短路计算，导体电气设备的选择，继电保护的设计和配备，最后进行防雷接地以及保护设计。关键字：变电站；短路计算；设备选择；继电保护；防雷接地；PAGE\*MERGEFORMATIVPAGE\*MERGEFORMATIIIABSTRACTWiththedevelopmentofeconomyandtherapidriseofthemodernindustrialconstruction,thedesignofthepowersupplysystemismoreandmorecomprehensive,system,plantpowerconsumptiongrowingrapidly,thepowerquality,technicalandeconomicconditions,thepowersupplyreliabilityindexalsoisincreasingdaybyday,thereforealsohasabigger,betterforpowersupplydesignrequirements.Designisreasonable,notonlydirectlyaffectthecapitalconstructioninvestment,operationcostandtheconsumptionofnon-ferrousmetal,alsoreflectedinthepowersupplyreliabilityandsafetyproduction,anditiscloselyrelatedtotheenterprise'seconomicbenefits,equipmentsafety.Thedesignisrefertothepartof220kVelectricalsubstationdesign.Firstofall,analyzetheoriginaldata,basedonit,designthemainwiringandthenthedesignoftheelectricalgenerallayoutofthearrangementanddistributionequipmentandchoosethemaintransformer,thentheshortcircuitcalculation,thechoiceofconductorelectricalequipment,thedesignofrelayprotectionandareequippedwith,atlast,Lightningprotectiongroundingandprotectiondesign.KeyWords:Substation；ShortCircuitCalculation；EquipmentSelection；Relayprotection；Lightningprotectiongrounding；PAGE\*MERGEFORMATIVPAGE\*MERGEFORMATV目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc170369751"前言7HYPERLINK\l"_Toc170369752"1电气主接线的设计8HYPERLINK\l"_Toc170369753"1.1主接线概述8HYPERLINK\l"_Toc170369754"1.2主接线设计原则10HYPERLINK\l"_Toc170369755"1.3主接线选择10HYPERLINK\l"_Toc170369799"2电气总平面布置及配电装置的选择PAGEREF_Toc170369799\h8HYPERLINK\l"_Toc170369800"2.1概述PAGEREF_Toc170369800\h错误！未定义书签。HYPERLINK\l