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1/18封面2/18作者：PanHongliang仅供个人学习110kV变电站电气设计110kV变电所电气设计（110/35/10kV，2/6/12回出线）摘要电能是现代城市发展的主要能源和动力。随着现代文明的发展与进步，社会生产和生活对3/18电能供应的质量和管理提出了越来越高的要求。城市供电系统的核心部分是变电所，因此，设计和建造一个安全、经济的变电所，是极为重要的。本变电所设计除了注重变电所设计的基本计算外，对于主接线的选择与论证等都作了充分的说明，其主要内容包括：变电所主接线方案的选择，进出线的选择；变电所主变压器台数、容量和型式的确定；短路点的确定与短路电流的计算，电气设备的选择（断路器，隔离开关，电压互感器，电流互感器，避雷器）；配电装置设计和总平面布置；防雷保护与接地系统的设计。另外，绘制了六张图纸，包括：电气主接线图，电气总平面布置图、防雷接地图、110kV接线断面图、35kV配电装置平面与断面图、110kV母线断面图。图纸规格与布图规范都按照了电力系统相关的图纸要求来进行绘制。关键词：变电所；电气主接线；电气设备；设计I毕业设计（论文）ADESIGNOFELETRICSYSTEMFOR110kVTERMINALTRANSFORMERSUBSTATIONAbstractElectricenergyisthemainenergyanddynamismofmoderncitydevelopment.Withdevelopmentandprogressofmoderncivilization,socialproductionandisitputforwardhighrequestmoreandmoretoqualityandmanagementthatelectricenergysupplytolive.Thecoreofcityforsupplyingpoweristransformer.Itisveryimportanttodesignandbuildonesafeandeconomicaltransformersubstation.Besidespayingattentiontobasiccalculationofdesignfortransformersubstation,thedesignmakesatisfyingnarrationtowardchoiceandargumentationofmainconnection.Themaincontentofthisdesignincludethechoiceofmainconnectionfortransformersubstation。thechoiceofpassinandoutline。thecertaintyofnumber,capacitanceandmodelformaintransformer。thecertaintyofshortcircuitpointsandcalculationofshortcircuit。thechoiceelectricequipment(breaker,insulateswitch,voltagemutual-inductanceimplement,currentmutual-inductanceimplement,arrester)。thedesignfordistributionanddisposalforchiefplane。thedesignforlightningproofprotectionandearthsystem.Inaddition,drawingsixblueprintsincludethemainwiringdiagram。thedisposaldrawingofelectricplane。thedrawingoflightningproofprotectionandearthsystem。thedrawingof110kVconnection。switchgearlayoutandsectionsof35kV。thedrawingof110kVbusconnection.Boththespecificationofdrawingandthecriterionofdisposalisbasedonrequirementofdrawingtoelectricpowersystem.Keywords:Transformersubstation。Mainconnection。Electricequipment。DesignII目录摘要.....................................................................IABSTRACT.................................................................II1前言.....................................................................12电气主接线设计...........................................................2.1主接线的设计原则......................................................2.2主接线设计的基本要求..................................................2.2.1主接线可靠性的要求.................................................2.2主接线灵活性的要求.................................................2.3主接线经济性的要求................................................2.3电气主接线的选择和比较................................................2.3.1主接线方案的拟订..................................................2.3.2主接线各方案的讨论比较............................................4/182.3.3主接线方案的初选择................................................3主变压器的选择与论证......................................................3.1SJD2—88规程中有关变电站主变压器选择的规定............................3.2主变压器选择的一般原则与步骤..........................................3.2.1主变压器台数的确定原则............................................3.2.2主变压器形式的选择原则............................................3.2.3主变压器容量的确定原则............................................3.3主变压器的计算与选择..................................................3.3.1容量计算..........................................................3.3.2变压器型号的选择........................................................................................4短路电流的计算......................................................................4.1网络的等值变换与简化................................................4.2各短路点的短路电流的计算.............................................5重要的电气设备选择.................................................................5.1断路器的选择.........................................................5.1.1断路器选择原则与技术条件.........................................5.1.2断路器型号的选择及校验...........................................5.2隔离开关的选择.......................................................5.2.1隔离开关的选择原则及技术条件.....................................5.2.2隔离开关型号的选择及校验.........................................6方案C与方案E的技术经济比较.....................................................6.1方案的总投资比较.....................................................6.2方案的综合投资比较...................................................6.3方案的年运行费比较...................................................6.4最终方案的确定.......................................................7其它电气设备的选择.................................................................7.1电流互感器的选择.....................................................7.2电压互感器的选择.....................................................7.3导线的选择...........................................................7.3.135KV侧母线的选择.................................................7.3.235KV侧出线的选择.................................................7.3.310KV侧母线的选择.................................................7.3.410KV侧出线的选择.................................................7.4避雷器的选择.........................................................7.4.1110kV母线接避雷器的选择及校验....................................7.4.235KV母线接避雷器的选择及校验................