搜索
青岛理工大学毕业设计（论文）I摘要变电站是电力系统的重要组成部分，它直接影响整个电力系统的安全与经济运行，是联系发电厂和用户的中间环节，起着变换和分配电能的作用，拟在某区域新建一座220KV变电站。本设计书主要介绍了220kv区域变电站电气一次部分的设计内容和设计方法。设计的内容有220kv区域变电站的电气主接线选择，主变压器，站用变压器的选择，母线，断路器和隔离刀闸的选择，互感器的配置，220kv,110kv,10kv线路的选择和短路电流的计算。设计中还对主要高压电气设备进行了选择与计算，如断路器，隔离开关，电压互感器，电流互感器等，此外还进行了防雷保护的设计，电气总平面布置及配电装置的选择，继电保护的设备等，提高了整个变电站的安全性。关键词：变电站，主接线，变压器青岛理工大学毕业设计（论文）IIAbstractSubstationisanimportantpartofthepowersystem,whichdirectlyaffectstheentirepowersystemsecurityandeconomicoperationofpowerplantsandtheuseristocontactthemiddlepart,playstheroleoftransformationanddistributionofelectricenergy，intendstobuilda220kvsubstationofaregional.Thedesignofthebookintroducestheregional220kvelectricalsubstationdesignapartofthecontentanddesign.Thedesignofthecontentsoftheelectricalsubstation220kvmainregionalcablechoice,themaintransformer,thetransformerusedinthechoiceofbus,circuitbreakersandisolationswitchoption,theconfigurationoftransformer,220kv,110kv,10kvlinechoiceandshort-circuitcurrentcalculations.Thedesignofthemainhighpressurealsohadachoiceofelectricalequipmentandcomputing,suchascircuitbreakers,isolatingswitches,voltagetransformers,currenttransformersandsoon.Inaddition,alightingprotectiondesignandcomputing，generallayoutofelectricalthechoiceofpowerdistributionunitandtheprotectionequipmentsandsoon.,increasedthesafetyoftheentiresubstation.Keywords:substation，mainconnection，transformer青岛理工大学毕业设计（论文）1目录摘要..............................................................................................................................IAbstract.........................................................................................................................II第1章绪论..................................................................................................................31.1工程概况...........................................................................................................31.2资料分析...........................................................................................................4第2章变压器的选择..................................................................................................62.1主变压器的选择基本原则...............................................................................62.2主变压器的确定...............................................................................................6第3章变电站的主接线设计......................................................................................83.1电气主接线概述...............................................................................................83.2220kv侧主接线方案的确定；........................................................................83.3110kv侧主接线方案的确定............................................................................93.410kv侧主接线方案的确定............................................................................13第4章短路电流计算................................................................................................144.1概述................................................................................................................144.2系统阻抗标幺值计算....................................................................................14第5章变电站电气设备选择....................................................................................205.1概述.................................................................................................................205.2高压电器的基本技术参数的选择与校验....................................................205.3断路器的选择................................................................................................215.3.1220kV进线侧断路器、变压器侧断路器和母联断路器的选择：215.3.210KV进线侧断路器、变压器侧断路器和母联断路器的选择：....225.3.3110KV进线侧断路器、变压器侧断路器和母联断路器的选择：..235.4隔离开关的选择............................................................................................245.4.1220kV侧隔离开关的选择：............................................................245.4.210KV侧隔离开关的选择：................................................................255.4.3110kV侧隔离开关的选择：...............................................................265.5电流互感器的选择........................................................................................265.5.1220KV侧电流互感器的选择：.......................................................265.5.210KV侧电流互感器的选择：.........................................................275.5.3110KV侧电流互感器的选择：.......................................................275.6电压互感器的选择........................................................................................285.6.1220KV侧母线电压互感器的选择......................................................295.6.2110KV侧母线电压互感器的选择......................................................295.6.310KV母线电压互感器的选择............................................................295.7母线的选择....................................................................................................305.8熔断器的选择................................................................................................305.8.1熔断器概述..........................................................................................305.8.2220kV侧熔断器的选择............