课程设计某冶金机械修造厂全厂总压降变电所及配电系统设计AMETALLURGICALMACHINERYPLANTSOURCETOTALPRESSUREDROPSUBSTATIONANDELECTRICALSYSTEMDESIGN学院：电气与信息工程学院专业班级：电气班学生姓名：指导教师：老师2013年7月6日某冶金机械修造厂全厂总压降变电所及配电系统设计摘要现代化工厂的设计是一门综合性技术，而工厂供电系统是其中重要设计内容之一，本文所探讨的就是某冶金机械修造厂全厂总压降变电所及配电系统设计问题。在论文里，认真对工厂所提供的原始资料进行了分析。首先进行电力负荷的运算，根据功率因数的要求在低压母线侧进行无功补偿，进而对主变和各车间变压器进行选择。同时对架空线进行了选择和校验。在论文里，对35KV和6KV母线处发生短路时的短路电流进行了计算，得到了最大运行方式和最小运行方式下的短路电流。根据本厂对继电保护的要求，进行了继电保护装置的整定计算。关键词：电力负荷，变压器，短路电流，继电保护AMETALLURGICALMACHINERYPLANTSOURCETOTALPRESSUREDROPSUBSTATIONANDELECTRICALSYSTEMDESIGNABSTRACTThedesignofthemodernfactoryisacomprehensivetechnology,andfactoryisoneoftheimportantpowersupplysystemdesign,thispaperdiscussedthecontentoftheisametallurgicalmachineryplantsourcetotalpressuredropsubstationandelectricalsystemdesignproblem.Inthearticle,weprovidedtofactoryearnestlytherawdataisanalyzed.Firstoperationofelectricpowerload,accordingtotherequirementsofthelowvoltagepowerfactorinbusbarsideofthereactivepowercompensation,thenthemaintransformerandtheworkshoptransformerinchoice.Atthesametimeforaerialwerechosenandcalibration.Inthearticle,weto35KVandsixKVshort-circuitedthebusplacewhenshort-circuitcurrentcalculation,gotthebiggestoperationmodeandminimumrunningunderthewayofshort-circuitcurrent.Accordingtoourfactorytotherequirementsoftherelayprotection,relayprotectiondeviceofsettingcalculation.KEYWORDS:electricpowerload,transformer,short-circuitcurrent,relayprotection目录摘要................................................................IABSTRACT...........................................................II1.原始资料及电力负荷计算............................................11.1设计任务...................................................11.2查找资料...................................................11.3电力负荷计算...............................................22.变电所高压电气设备选型............................................52.1主变压器选择...............................................52.2架空线路选择...............................................62.3母线的选择..................................................72.3.135kv母线的选择......................................72.3.26kv母线的选择.......................................82.4补偿电容器选择............................................112.5车间变压器选择............................................113.电气主接线设计...................................................124.短路电流及冲击电流计算...........................................135.电气设备选择及校验...............................................165.135KV高压断路器、隔离开关及熔断器选择......................175.2电流互感器和电压互感器选择................................185.3开关柜选择................................................196.主变压器继电保护选择.............................................216.1瓦斯保护...................................................226.2装设电流速断保护...........................................226.3变压器纵差动保护...........................................236.4反时限过电...
