摘要本设计是对220kV降压变电所电气部分初步设计。包括对电气主接线的确定，主要电气设备的选择，包括断路器，隔离开关，电流互感器，电压互感器，母线，站用变压器等。全设计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：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比较选择，并制定了适合要求的主接线；短路电流计算是最重要的环节，本设计详细的介绍了短路电流的计算；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。关键词：220KV变电站电气主系统设计AbstractThetopicthatIdesignisthatatopicdesignedthistimeisthat"electricapartoftransformersubstationisdesigned",itsmaintaskisapreliminarydesignofaparttothetransformersubstationofHeDong.Includingtotheelectricsurenessthatmainlywire,thechoiceofthemainelectricequipment,includingcircuitbreaker,isolatetheswitch,themutualinductorofelectriccurrent,voltagemutualinductor,busbar,standwiththevoltagetransformerandwait.Wholethesisbesidessummarygraduatetodesignthebookoutside,returnedtheexpatiationeverykindofmostbasicrequestthatequipmentschoosewithprincipleaccordingto.Thechoiceofthetransformerincludes:Maintransformerusethemaintechniqueinnumber,capacity,modelnumber...etc.insetdataofthetransformertoreallysettle;Theelectricitylordconnectedthelinetointroduceprimarilytheelectricitylordconnectsthelinearimportance,designaccordingto,thebasicrequest,everykindofmeritandshortcomingandlordsthatconnectthelineformconnectsthelinearchoosingmore,thelordthatcombinetoestablishtheinkeepingwithmyplanttherequestconnectstheline;Theshort-circuitgalvanometerisregardedasthemostimportantlink,thisthesisintroducedthecalculatingpurposeinshort-circuitelectriccurrent,assumptionterm,generalprovision,thecalculation,networktransformationofaparameterdetailed,andeachcalculationetc.Keywords：Transformersubstation;Powersystem;Mainlywire;powertransmissionsystems目录1绪论................................................................................................................11.1原始资料............................................11.2设计原则............................................32变电所电力负荷计算................................................................................42.1负荷计算的目的......................................42.2负荷计算............................................42.3无功补偿方案........................................53变压器台数和容量的选择........................................................................103.1主变压器的选择......................................103.2主变压器的确定......................................104电气主接线方案的确定............................................................................144.1电气主接线的概况....................................144.2电气主接线基本要求..................................144.3变电所主接线的选择..................................155短路电流计算............................................................................................215.1短路电流计算的目的..................................215.2短路计算点的选择..................................215.3三相短路电流冲击值的计算............................226高压电气设备及载流导体选择................................................................326.1电气设备的选择原则......
VIP
