某车间低压配电系统及车间变电所设计

成都理工大学工程技术学院毕业论文某车间低压配电系统及车间变电所设计作者姓名:黄楷专业名称:电气工程及其自动化指导教师:雷永锋讲师某车间低压配电系统及车间变电所设计I摘要电能是工业生产的主要动力能源，工厂供电设计的任务是从电力系统取得电源，经过合理的传输、变换、分配到工厂车间中每一个用电设备上，随着工业电气自动化技术的发展，工厂用电量快速增长，对电能质量、供电可靠性以及技术经济指标等的要求也日益提高，供电设计是否完善，不仅影响工厂的基本建设投资、运行费用和有色金属消耗量，而且也反映到工厂的可靠性和工厂的安全生产上，它与企业的经济效益、设备和人身安全等是密切相关的。现在除个别大型工业联合企业有自备电厂外，绝大多数工厂都是从国家电力系统取得电能的，因此，工厂工业负荷是电力系统的主要用户，工厂供电系统也是电力系统的一个组成部分，保证安全供电和经济运行，不仅关系到企业的利益，也关系到电力系统的安全和经济运行以及合理利用能源。工厂供电设计方案必须安全、可靠、优质、经济这些条件。本论文为某车间低压配电系统及车间变电所设计，该车间的主变压器容量为630kVA，各电压等级分别为10kV和0.4kV，车间的负荷均属三类负荷，本设计的主要内容包括：车间的负荷计算及无功补偿，确定车间变电所的所址和型式，车间变电所的主纬线方案，短路电流计算，主要用电设备选择和校验，车间变电所整定继电保护和防雷保护及接地装置的设计等。关键词:安全供电经济效应合理利用某车间低压配电系统及车间变电所设计IIAbstractElectricalenergyisthemainmotivatepartoftheindustrialproduction.Factoriessupplypowerdesigndutytoobtainpowersourcefromtheelectricalpowersystem,passthroughthereasonabletransmission,transformation,andassignstothefactoryworkshopinoneachcurrentcollector.Alongwiththeindustryelectricityautomationtechnologydevelopment,factorieswiththeelectricquantityrapidgrowth,totheelectricalenergyquality,thepowersupplyreliabilityaswellasthetechnologyeconomicindicatorandsoontherequestalsodaybydayenhances.Thepowersupplydesignswhetherconsummates,notonlyaffectsthefactorythecapitalinvestment,theoperatingcostandthenon-ferrousmetalconsumption,moreoveralsoreflectedtothefactorypowersupplyreliabilityandinthefactorysafetyinproduction,itandenterprise’seconomicefficiency,theequipmentandsoonistheclosecorrelation.Nowhasbesidestheindividualmajorindustryintegratedenterprisesuppliesforoneselfthepowerplant,themajorityfactoryallisobtainstheelectricalenergyfromthecountryelectricalpowersystem.Therefore,thefactoryindustryloadistheelectricalpowersystemmainuser,thefactorypowersupplysystemalsoisanelectricalpowersystemconstituent,guaranteesthesafepowersupplyandtheeconomicalmovement,notonlyrelatestheenterprisethebenefit,alsorelatestheelectricalpowersystemthesecurityandtheeconomicalmovementaswellasthereasonableuseenergy.Thefactorypowersupplydesignmustfollownationeachgeneralandspecificpolicies,thedesignproposalmustconformtointhenationstandardrelatedstipulation,simultaneouslymustsatisfyfollowingseveralbasicrequests:Securities-intheelectricalenergysupply,Reliable-shouldsatisfytheelectricalenergyusertothepowersupplyreliablerequest,Highquality,lowoperatingcost,andsavestheelectricalenergyandthereducednon-ferrousmetalconsumptionasfaraspossible.Inaddition,inthepowersupplywork,shouldreasonablyprocessthebureauandtheoverallsituation,currentandislongtermandsoonthe某车间低压配电系统及车间变电所设计IIIrelations，bothmustconsiderpartialandthecurrentbenefit,andmusthavethetotalview,cantaketheentiresituationintoaccount,adaptationdevelopment.Thisinstructionbookletrepairsavehiclethelowelectricalpowerdistributionsystemsforsomemechanicalfactoryelectricityandtheworkshoptransformersubstationdesignexplanation.Thisworkshopmaintransformercapacityis630kVA,variousvoltagesrankrespectivelyis10kVand0.4kV,theworkshoploadisthreekindsofloads.Accordingtodesignstheprojectdescriptiontherequest,thisdesignmaincontentincludes:Theworkshoploadcomputationandtheidleworkcompensate;definiteworkshoptransformersubstationinstitutesiteandpattern;Workshoptransformersubstationhostelectriccoilplan;Short-circuitcurrentcomputation;mainlycurrentcollectorchoiceandverification;WorkshoptransformersubstationsetupUPSandanti-radarprotectionandgroundingdesignandsoon.KeyWords:safeelectricitysupply，economiceffect，wiseuse某车间低压配电系统及车间变电所设计IV目录摘要.................................................................................................................IAbstract.........................................................................................................II目录..............................................................................................................IV前言...........................................................................................................-1-1车间的负荷计算及无功补偿................................................................-4-1.1车间设备明细统计表............................................................................-4-1.2工具、机修车间设备负荷计算表....................................................-6-1.3装机容量、计算负荷、无功负荷、视在负荷的计算................-6-2、确定车间变电所的所址和形式.......................................................-11-3、车间变电所无功补偿，主变型式、容量和台数及主结线选择方案-12-4、短路计算与一次设备选择...............................................................-16-4.1配电系统短路计算电路图.................................................................-16-4.2计算低压380KV母线上K2点的三相短路电流和短路容量-18-5.车间变电所高、低压进出线截面（包括母线）的选择..................-20-5.1各回路容量、电流..............................................................................-20-5.2确定变压器低压侧主出线截面选择...............................................-20-5.3变压器高压侧进线电缆截面选择...................................................-21-5.4低压出线及设备选择校验.................................................................-22-5.4.1P1配电屏设备校验...........................................................-22-5.4.2P2配电屏设备校验...........................................................-22-5.5负荷选择......................