题目曲江水电厂及地区电网规划设计摘要随着经济和工业的快速发展，电源设计越来越全面，关于电源质量、经济状况、可靠性也在提高。要实现现代化，最大程度在于能源。国家经济的基础是电力。这是一个重要的支柱产业，与国家的兴衰关系密切。对供电也有了更高要求。作为供电和管理的变电站，变电站需要改变传统的设计和控制模式以适应现代化。本论题是对配有2台200MW和2台300MW汽轮发电机的火电厂和4台60MW水轮发电机的水电厂一次部分的初步设计。根据原始数据，选择主变压器进行主电路设计依据的计算，然后选择电气设备，短路计算，导线选择。本文包括选择主变压器的容量，数量和形式，选择各种电气设备和变电站设计中包含的各种参数，详细计算验证设计方法的经济性。并解释为什么选择它。关键词：变电站；短路电流；经济计算；继电保护AbstractWiththerapiddevelopmentoftheeconomyandindustry,powersupplydesignhasbecomemoreandmorecomprehensive,andpowerquality,economicconditions,andreliabilityhavealsoincreased.Toachievemodernization,thegreatestdegreeliesinenergy.Thenationaleconomyisbasedonelectricity.Thisisanimportantpillarindustryandhasacloserelationshipwiththeriseandfallofthecountry.Thereisalsoahigherdemandforpowersupply.Assubstationsforpowersupplyandmanagement,substationsneedtochangetraditionaldesignandcontrolmodestoadapttomodernization.Thistopicistheplanningof220kVsubstationsandgriddesign.Accordingtotheoriginaldata,selectthemaintransformertocalculatethemaincircuitdesignbasis,andthenselecttheelectricalequipment,shortcircuitcalculation,andwireselection.Thispaperincludesselectingthecapacity,quantityandformofthemaintransformer,selectingvariousparameterscontainedinvariouselectricalequipmentandsubstationdesign,andcalculatingandverifyingtheeconomicsofthedesignmethodindetail.Andexplainwhychooseit.Keywords:substation;short-circuitcurrent;economiccalculation;relayprotection目录第一章前言...........................................4第二章设计说明.........................................................................................62.1确定发电机型号，参数........................................................................62.2确定发电厂的主变电压器型号，参数................................................62.3电气主接线的选择................................................................................72.4曲江接线形式........................................................................................7第三章计算说明书...................................................................................103.1主变压器容量选择..............................................................................103.2方法一的计算内容..............................................................................103.3方法二的计算（环网）......................................................................233.4比较确定最佳方案..............................................................................313.5将最好方案进行短路电流计算..........................................................313.6电气设备的选择..................................................................................473.7继电保护配置....................................................................................53附录A...............................................................................................................55附录B...............................................................................................................56结束语...............................
