工厂供配电系统设计

XX大学本科毕业设计I摘要工厂供配电系统的设计其实就是为电力系统的发展提出实施方案，主要根据电力部门提供的资料和向电力部门索取得到的资料来为用户供配电系统制定出具体的方案。工厂的供配电系统就是将电力系统的电能分配并供应到工厂的各个车间及厂房中去，由工厂降压变电所，车间变电所，高低压配电线路及用电设备所组成。工厂总降压变电所和配电系统的设计基本内容主要有：电力系统负荷计算和功率补偿、短路电流计算、变配电所主接线的选择、主变压器的选择、高低压侧一次设备的选择和校验、进出线规格型号的选择和校验、防雷接地装置设计等等。本设计设计依据的负荷资料和电源资料均为参照实际合理假定出来的，根据这些资料按照安全可靠、优质经济的原则设计出本厂的变电所主接线电路系统图并绘制出来。关键词：供配电系统；电能；变电所；主接线XX大学本科毕业设计IIAbstractFactorysupplyanddistributionsystemisactuallydesignedforthedevelopmentofpowersystemsproposedtheimplementationofprograms,mainlybasedontheinformationobtainedfromthepowersectorandpowersectortogetinformationfortheusertodevelopadistributionsystemforspecificprograms.Factorysupplyanddistributionsystemthatwillpowerthepowerdistributionsystemandsuppliedtotheplant'svariousworkshopsandfactoriesgo,step-downsubstationfromthefactory,workshopsubstation,highandlowvoltagedistributionlinesandelectricalequipmentcomponents.Designelementsoftheplanttotalstep-downsubstationanddistributionsystemsare:powersystemloadcalculationandpowercompensation,short-circuitcurrentcalculation,substationmainconnectionoptions,selectthemaintransformers,highandlowvoltagesideoftheprimaryequipmentselectionandvalidation,inletandoutletspecificationmodelselectionandvalidation,lightningprotectionandgroundingequipmentdesignandsoon.Loaddataandpowersupplydataarebasedonthedesignofthedesignrefertotheactualreasonabletoassumethatout,basedonthisinformationinaccordancewiththesafe,reliable,high-qualityeconomicprinciplestodesignmainwiringcircuitsystemdiagramanddrawitoutforthesubstation.Keywords：supplyanddistributionsystemenergysubstationmainConnectionXX大学本科毕业设计III目录摘要..............................................................................................................................................IAbstract..........................................................................................................................................II第1章绪论...................................................................................................................................11.1工厂供电的意义................................................................................................................11.2设计的主要内容................................................................................................................1第2章负荷计算和无功功率补偿...............................................................................................22.1电力负荷的分级及对供电的要求....................................................................................22.1.1电力负荷的概念......................................................................................................22.1.2电力负荷的分级及要求..........................................................................................22.2用户负荷计算....................................................................................................................22.2.1负荷计算的目的和内容..........................................................................................22.2.2负荷计算的方法......................................................................................................22.3无功功率补偿....................................................................................................................42.4本章小结...........................................................................................................................6第3章变配电所的位置选址和类型的选择...............................................................................73.1变配电所的任务和类型....................................................................................................73.2变配电所的所址选择........................................................................................................73.2.1变配电所所址选择一般原则..................................................................................73.2.2变配电所所址的确定..............................................................................................73.3本章小结............................................................................................................................7第4章主变压器和主接线方案的选择.......................................................................................84.1主变压器的选择................................................................................................................84.2主接线方案的选择............................................................................................................94.3本章小结..........................................................................................................................10第5章短路电流的计算.............................................................................................................115.1计算短路电流的目的......................................................................................................115.2三相短路电流的计算......................................................................................................115.2.1绘制计算电路图....................................................................................................115.2.2确定基准值...................................................................