摘要本文首先根据任务书上所给系统与线路及相关负荷的参数，通过对负荷资料的分析进行了负荷计算，根据负荷计算结果确定了主变压器台数，容量及型号，同时也确定了站用变压器的容量及型号，并从安全，经济及可靠性等方面考虑，确定了110kV，35kV，10kV以及站用电的主接线方案。然后，进行了短路电流计算，根据最大持续工作电流及短路计算的计算结果，对高压断路器、隔离开关、电流互感器、电压互感器、母线等主要电气设备进行了选择和校验。之后对变电站的配电装置进行了选择以及电气平面布置设计。最后做了主变压器的保护和变电站的防雷保护，从而完成了110kV变电站电气部分的设计。关键词：变电站，变压器，主接线，短路电流计算AbstractInthisarticle,onthebasisofthesystemthelineandtherelatedloadparametersgivenbythemandate,throughtheanalysisoftheloaddata,wehavealoadcalculation,accordingtotheloadcalculationresults,weascentuinedthequalitycapacityandmodelsofthemaintransformer,butalsoidentifiedthestationtransform’scapacityandmodels,consideringthesecurity,reliabilityandeconomicweidentified110kv,35kv,10kvelectricitystationsandthemaincableprogrammer.Then,madeashort-circuitcurrentcalculation.Inaccordancewithmaximumsustainedworkcurrentandtheshort-circuitcurrentcalculationresults,thehigh-voltagecircuitbreakers,isolationswitches,currenttransformers,voltagetransformers,busandothermajorelectricalequipmenthadbeenselectedvalidated.Andthenmadeachoiceaboutthedevicesofthepowerdistribution,substationanddidaplaneelectricaldesign.Finallywedidamaintransformersubstationprotectionandalightningprotection,thusthe110kVelectricalsubstationpartofthedesignhadbeencompleted.Keywords:substations,transformers,mainwiring,short-circuitcurrentcalculation目录第一部分设计说明书..................................................11引言...............................................................12原始资料...........................................................23电气主接线的选择...................................................43.1电气主接线的基础知识........................................43.2电气主接线的分类............................................53.3电气主接线设计的原则........................................63.4主接线方案的选择............................................73.5站用电接线选择..............................................94负荷的计算及主变压器的选择........................................104.1负荷的计算.................................................104.2主变压器的选择.............................................124.3所用变选择.................................................145无功功率的补偿....................................................155.1无功补偿装置类型的选择.....................................155.2并联电容器装置的分组.......................................165.3并联电容器装置的接线方式...................................176短路电流的计算....................................................187电气设备的选择与校验..............................................207.1电气设备选择的一般原则......................................207.2高压断路器的选择...........................................217.3高压隔离开关的选择.........................................227.4电流互感器的选择...........................................237.5电压互感器的选择...........................................247.6母线的选择.................................................258配电装置的选择....................................................279主变压器的保护及变电...
