变电所电气一次系统设计题目毕业设计(论文)`系别电力工程系专业班级电气06K3班学生姓名×××指导教师×××××××年六月华北电力大学科技学院本科毕业设计（论文）摘要PAGEII变电所电气一次系统设计摘要变电所是电力系统的重要组成部分，是组成电网的基本单元之一，其运行的安全与否，直接关系到电网的安全和稳定，对国民经济和社会的发展至关重要。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，绝缘子和穿墙套管）；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，用CAD绘制了七张图纸，包括：电气主接线图，电气总平面布置图，防雷与接地各一张，110kV接线断面图，35kV接线断面图，10kV接线断面图。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ADESIGNOFELETRICPRIMARYSYSTEMFORSTEP-DOWNTRANSFORMERSUBSTATIONAbstractElectricitysubstationisanimportantcomponentofthesystemiscomposedofonebasicunitofthegrid,itsoperationissafeornotdirectlyrelatedtothepowergridsafetyandstabilityofthenationaleconomicandsocialdevelopment.Thecoreofcityforsupplyingpoweristransformer.Itisveryimportanttodesignandbuildonesafeandeconomicaltransformersubstation.Besidespayingattentiontobasiccalculationofdesignfortransformersubstation,thedesignmakesatisfyingnarrationtowardchoiceandargumentationofmainconnection.Themaincontentofthisdesignincludethechoiceofmainconnectionfortransformersubstation;thechoiceofpassinandoutline;thecertaintyofnumber,capacitanceandmodelformaintransformer;thecertaintyofshortcircuitpointsandcalculationofshortcircuit;thechoiceelectricequipment(breaker,insulateswitch,voltagemutual-inductanceimplement,currentmutual-inductanceimplement,arrester,insulatorandwallbushing);thedesignfordistributionanddisposalforchiefplane;thedesignforlightningproofprotectionandearthsystem.Inaddition,drawingsevenCADblueprints,includethemainwiringdiagram:thedisposaldrawingofelectricplane;thedrawingoflightningproofprotectionandearthsystem;thedrawingof110kVconnection;thedrawingof35kVconnection;thedrawingof10kVconnection.Boththespecificationofdrawingandthecriterionofdisposalisbasedonrequirementofdrawingtoelectricpowersystem.Keywords:Transformersubstation;Mainconnection;Electricequipment;Design华北电力大学科技学院本科毕业设计（