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吉林二次降压变电所电气工程初步设计-I-摘要本设计题目是吉林60kV变电所电气工程设计，此变电所为该地区公用变电所，电压等级为60/10kV。设计要求变电所的功率因数在0.9以上，所用用户10kv线路电压损耗不超过9%。本设计除了摘要、计算书之外，还详细的说明了各种设备选择的基本要求和原则依据，变压器的选择包括主变压器的台数、容量、型号等主要技术数据的确定；电气主接线主要介绍了电气主接线的重要性、设计依据、基本要求、各种接线形式的优缺点以及主接线的选择比较，并确定了适合本所要求的主接线方式；短路电流计算是最重要的环节之一，在设计说明书中详细介绍了短路电流计算的目的、一般规定、元件参数的计算、网络变换以及各种短路点的计算等知识；高压电气设备包括汇流母线、高压断路器、隔离开关、电流互感器、电压互感器等的选择原则和要求，并对这些设备进行热稳定、动稳定校验和产品相关介绍；而根据本所设计介绍的高压配电装置的设计原则、要求和10kV侧高压配电装置，决定了此次设计对本所采用普通中型布置；变电所的防雷保护则主要针对避雷针和避雷器的设计。此外，在论文适当的位置还附加了图纸（主接线、平面图、断面图等）及表格以方便阅读、理解和应用。关键词：变电所设计,短路计算,防雷保护沈阳工程学院毕业设计（论文）-II-AbstractThisdesigntopicistheJilintwotransformersubstationelectricalengineeringdesign,thistransformersubstationforthislocalpublictransformersubstation,thevoltagerankis60/10kv,thedesignrequeststhetransformersubstationthepowerfactorabove0.9,usestheuser10kvlineentrancethevoltageexcursiontoloseforthepositiveandnegative5%voltagesurpasses10%.Wholethesisbesidessummarygraduatetodesignthebookoutside,returnedtheexpatiationeverykindofmostbasicrequestthatequipmentschoosewithprincipleaccordingto.Thechoiceofthetransformerincludes:Maintransformerusethemaintechniqueinnumber,capacity,modelnumber…etc.Designdutyincludingchoiceall10kvlinewire;Selectsthestaticelectricitycompensator;ChoosesthehosttochangetheTaiwannumber,thecapacity,theform;Choosesthetransformersubstationelectricitymainwiring;designaccordingto,thebasicrequest,everykindofmeritandshortcomingandlordsthatconnectthelineformconnectsthelinearchoosingmore,thelordthatcombinetoestablishtheinkeepingwithmyplanttherequestconnectstheline.Theshort-circuitgalvanometerisregardedasthemostimportantlink,thisthesisintroducedthecalculatingpurposeinshort-circuitelectriccurrent,assumptionterm,generalprovision,thecalculation,networktransformationofaparameterdetailedly,andeachcalculationetc.knowledgethatshortcircuitorder;Thechoiceofthehighpressureelectricityequipmentsincludesthemotherline,highpressurebreakstheroadmachineandinsulatetheswitch,electriccurrenttofeelswitheachotherthemachine,electricvoltagefeelswitheachotherthechoiceprincipleofthemachine,highpressureswitchcabinetwithrequest,andproceedtotheseequipmentstheschoolcheckwiththerelatedintroductioninproduct.Butgotogetherwiththedesignprincipleoftheelectricitydevice,requesttogotogetherwiththeelectricitydevicewith60KVaccordingtothisthesisahighpressureforintroducing,decidethistimedesigntoadoptthecentthemutuallymedium-sizedarrangingtothemyplant.Afterelectricityprotectionwiththeprogrammingoftheautomaticdevice,includetotal,automaticdevice,generalprovisionwiththeprotectionofgenerator,transformer,motherlineetc.equipments,butpowerplantwithchangetogiveorgetanelectricshockadesignfordefendingthunderprotectionthenprimarilyaimingatlightningrodwithlightningarrester.Inaddition,returnintheappropriatepositioninthesisadditionaldrawingpaper(thelordconnectstheline,plan,topographicalplan,crosssectiondrawinganddefendthethunderprotectionetc.)andtablesread,comprehendwiththeconveniencewithapplied.KeyWords：substationdesignshortcircuitcomputinglightingproof吉林二次降压变电所电气工程初步设计目录摘要.........................................................................................................................................IAbstract......................................................................................................................................II第一篇说明书........................................................................................................................11引言............................................................................................................................12变电所设计原则........................................................................................................2310kV架空导线截面选择及校验..............................................................................33.1一般原则..........................................................................................................33.2导线截面的选择..............................................................................................33.3导线截面的校验..............................................................................................43.3.1按导体载流量校验.................................................................................43.3.2按电压损耗校验.....................................................................................54无功补偿及主变压器选择........................................................................................64.1功率因数及电容器的选择..............................................................................64.1.1提高功率因数的意义.............................................................................64.1.2并联电容器组的基本接线类型.............................................................64.1.3电容器台数的确定.................................................................................64.2主变压器的确定..............................................................................................74.2.1一般要求.................................................................................................74.2.2所选变压器型号........................................