辽宁发电厂4x200MW第一期工程电气部分初步设计

沈阳工业大学-I-摘要本毕业设计论文是辽宁发电4200MW第一期工程电气部分初步设计。全论文除了摘要、毕业设计书之外，还详细的说明了各种设备选择的最基本的要求和原则依据。变压器的选择包括：发电厂主变压器、高压备用变压器及高压厂用变压器的台数、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比较选择，并制定了适合本厂要求的主接线；厂用电接线包括：厂用电接线的总要求以及厂用母线接线设计。短路电流计算是最重要的环节，本论文详细的介绍了短路电流计算的目的、假定条件、一般规定、元件参数的计算、网络变换、以及各短路点的计算等知识；高压电气设备的选择包括母线、高压断路器、隔离开关、电流互感器、电压互感器、高压开关柜的选择原则和要求，并对这些设备进行校验和产品相关介绍。而根据本论文所介绍的高压配电装置的设计原则、要求和220KV的配电装置，决定此次设计对本厂采用分相中型布置。继电保护和自动装置的规划，包括总则、自动装置、一般规定和发电机、变压器、母线等设备的保护，而发电厂和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、防雷保护等）及表格以方便阅读、理解和应用。关键词：火力发电厂电气设计短路计算设备选择配电装置沈阳工业大学-II-AbstractThisgraduatedesignthesisisa4×200MW：LiaoNingpowerplantthefirstperiodengineeringelectricitypartsoffirststepsdesign.Wholethesisbesidessummarygraduatetodesignthebookoutside,returnedtheexpatiationeverykindofmostbasicrequestthatequipmentschoosewithprincipleaccordingto.Thechoiceofthetransformerincludes:Maintransformer,highpressureinpowerplantbacktransformerandhighpressurefactoriesusethemaintechniqueinnumber,capacity,modelnumber...etc.insetdataofthetransformertoreallysettle。Theelectricitylordconnectedthelinetointroduceprimarilytheelectricitylordconnectsthelinearimportance,designaccordingto,thebasicrequest,everykindofmeritandshortcomingandlordsthatconnectthelineformconnectsthelinearchoosingmore,thelordthatcombinetoestablishtheinkeepingwithmyplanttherequestconnectstheline;Thefactoryconnectswiththeelectricitythelineincludes:Thefactoryconnectthelineartotalrequestandfactorytoconnectthelinedesignwiththemotherlinewiththeelectricity.Theshort-circuitgalvanometerisregardedasthemostimportantlink,thisthesisintroducedthecalculatingpurposeinshort-circuitelectriccurrent,assumptionterm,generalprovision,thecalculation,networktransformationofaparameterdetailedly,andeachcalculationetc.knowledgethatshortcircuitorder;Thechoiceofthehighpressureelectricityequipmentsincludesthemotherline,highpressurebreakstheroadmachineandinsulatetheswitch,electriccurrenttofeelswitheachotherthemachine,electricvoltagefeelswitheachotherthechoiceprincipleofthemachine,highpressureswitchcabinetwithrequest,andproceedtotheseequipmentsestheschoolcheckwiththerelatedintroductioninproduct.Butgotogetherwiththedesignprincipleoftheelectricitydevice,requesttogotogetherwiththeelectricitydevicewith220KVsaccordingtothisthesisahighpressureforintroducing,decidethistimedesigntoadoptthecentthemutuallymedium-sizedarrangingtothemyplant.Afterelectricityprotectionwiththeprogrammingoftheautomaticdevice,includetotal,automaticdevice,generalprovisionwiththeprotectionofgenerator,transformer,motherlineetc.equipments,butpowerplantwithchangetogiveorgetanelectricshockadesignfordefendingthunderprotectingthenprimarilyaimingatlightningrodwithlightningarrester.Inaddition,returnintheappropriatepositioninthesisadditionaldiagrampaper(thelordconnectstheline,planechartanddefendthunderprotectionetc.)andformsread,comprehendwiththe沈阳工业大学-III-conveniencewithapplied.Keyword:ThermalpowerplantElectricitydesignshortcircuitcalculationTheequipmentschoiceelectricityequips沈阳工业大学-1-目录摘要......................................................................................................................................................IABSTRACT..........................................................................................................................................II目录....................................................................................................................................................1引言..........................................................................................................................................................4第一部分说明书..................................................................................................................................9第一章发电机和主变压器及厂用／备用变压器的选择....................................................................91.1发电机的选择........................................................................................................................91.2变压器的选择........................................................................................................................91.2.1主变压器的选择..............................................................................................................................9第二章电气主接线的设计..............................................................................................................122.1总则........................................................................................................................................122.1.1电气主接线的设计原则................................................................................................................122.1.2电气主接线的设计步骤................................................................................................................122.2大型电厂的电气主接线.........................................................................................................132.2.1发电机—变压器组单元接线..........................................................................................