搜索
工厂10kv总变电所及配电系统设计摘要工厂供电系统就是将电力系统的电能降压再分配电能到各个厂房或车间中去，它由工厂降压变电所，高压配电线路，车间变电所，低压配电线路及用电设备组成。工厂总降压变电所及配电系统设计，是根据各个车间的负荷数量和性质，生产工艺对负荷的要求，以及负荷布局，结合国家供电情况.解决对各部门的安全可靠，经济技术的分配电能问题。其基本内容有以下几方面：进线电压的选择,变配电所位置的电气设计,短路电流的计算及继电保护,电气设备的选择,车间变电所位置和变压器数量、容量的选择,防雷接地装置设计等。本设计在对化工厂进行供配电调研、论证的基础上，完成了化工厂的负荷计算，无功功率补偿，变配电所位置和型式选择，10KV变配电所主接线设计；还进行了短路电流计算、电气设备的选择与校验。最后对化工厂的变压器进行了保护和供电系统的防雷。关键词：变电所，负荷，短路电流，电力设备CHEMICALTOTALSUBSTATIONANDDISTIBUTIONSYSTEMDESIGNABSTRACTFactorypowersupplysystemistheredistributionofpowersystempowerstep-downpowertoeachplantorshopfloortoitbythefactorystep-downtransformersubstation,highvoltagedistributionlines,plantandsubstation,lowvoltagedistributionlinesandelectricalequipmentcomposition.Thetotalplantstep-downsubstationanddistributionsystemdesignisbasedontheloadofeachnumberandnatureoftheworkshop,theproductionprocessontheloadrequirements,andloaddistribution,combinedwiththenationalelectricitysupply.Addressthevariousdepartmentsofthesafe,reliable,economicandtechnologicalThedistributionofelectricenergyissues.Thebasiccontentsofthefollowingareas:incominglinevoltageselection,thelocationoftheelectricalsubstationdesign,calculationandshortcircuitcurrentprotection,electricalequipmentselection,thenumberofplantandtransformersubstationlocationandcapacitychoiceslightningprotectiongroundingdesign.Thedesignofpowerdistributioninthechemicalplantforresearch,demonstration,basedonthecompletionofthechemicalloadcalculation,reactivepowercompensation,powerdistributionbylocationandtypeselection,10KVsubstationmainwiringdesign;alsoconductedshort-circuitcurrentcalculation,electricalequipmentselectionandvalidation.Finally,chemicalplantsandpowertransformerprotectionlightningprotectionsystem.KEYWORDS:substation,load,short-circuitcurrent,powerequipment目录前言................................................................................................1第1章负荷计算...............................................................................31.1计算负荷...............................................................................31.1.1一号变电所的计算负荷..............................................41.1.2二号变电所的计算负荷..............................................51.1.3三号变电所的计算负荷..............................................51.1.4四号变电所的计算负荷..............................................51.1.5五号变电所的计算负荷...............................................61.2无功功率补偿.......................................................................61.2.1一号变电所的无功功率补偿......................................71.2.2二号变电所的无功功率补偿......................................81.2.3三号变电所的无功功率补偿......................................91.2.4四号变电所的无功功率补偿....................................101.2.5五号变电所的无功功率补偿....................................111.2.6所有车间无功补偿后的计算负荷............................12第2章变压器和主接线方案的选择..............................................142.1变配电所位置的选择和负荷中心确定..............................142.1.1一号车间变电所变压器位置和型式的选择.............162.1.2二号车间变电所变压器位置和型式的选择.............172.1.3三号车间变电所变压器位置和型式的选择.............172.1.4四号车间变电所变压器位置和型式的选择.............172.1.5五号车间变电所变压器位置和型式的选择.............182.2变压器和主接线的选择.....................................................192.2.1变电所变压器的选择...............................................192.2.2变电所主接线方案的选择........................................202.3短路电流的计算.................................................................262.3.1绘制计算电路............................................................262.3.2确定基准值...............................................................262.3.3计算短路电路中各元件的电抗标幺值....................262.3.4k-1点短路电流的计算..............................................282.3.5k-2点短路电流的计算..............................................282.3.6短路电流计算结果汇总............................................29第3章设备的选择校验.................................................................313.1变电所一次设备的选择校验..............................................313.1.1各回路高压侧的条件...............................................313.1.210KV侧一次设备的选择及校验..............................323.1.4高低压母线的选择...................................................333.2配变电所进出线的选择.....................................................333.2.110KV高压进线的选择校验......................................343.2.2由高压配电室至各车变电缆的选择校验................34第4章二次保护和防雷.................................................................384.1配变电所二次回路方案的选择与继电保护的整定...........384.1.1配变电所的电能计量回路........................................384.1.2变电所的测量和绝缘监察回路................................384.1.3.变压器的保护装置....................................................384.2配变电所的防雷保护.........................................................414.2.1直击雷防护................................................................414.2.2雷电侵入波的防护....................................................41结论................................................................................................42谢辞................................................................................................43参考文献..........................................................................................44附录...............