大学本科毕业论文说明书摘要林西煤矿系70万吨中小煤矿，已有百多年的历史，许多设备都是原来引进外国的。随着企业的发展，目前的供电系统已经不能保证安全、可靠的供电。本次设计是根据现有的供电系统的特点，对某些设备以及负荷分布进行改进，以满足供电的可靠性和安全性。本次供电系统的设计内容包括：负荷计算、地面变电所设计、短路电流计算、地面高低压设备选择、保护装置、变电所防雷及接地等。本设计主供电系统由来自不同地方的两路35kV线路供电，经主变压器变为6kV，由单母分段的接线方式向矿区供电。根据煤矿供电系统特点，系统主线路均以最大运行方式进行整定，并以此对线路及其设备进行选择。本次设计林西煤矿35kV供电系统只有井上供电系统部分。为保证供电的安全性和可靠性，又考虑林西煤矿15年的服务期限，从经济和技术两个方面对本矿进行整体设计，以达到满足对林西煤矿设计的合理性。关键词：林西煤矿；35kV；供电；负荷计算；设备选择；短路电流计算AbstractThedesignisbasedonthecompletionoftheinternshipinthecoalmine.LinXiCoalMinethroughfieldvisits,inconjunctionwiththeexistinglevelofproductionplantandtheprospectsforfuturedevelopmentinthepowersupplysystemonthebasisoftherelevantprovisionsofthecoalproductionindustryfurtherstandardizeandimprove.1大学本科毕业论文说明书LinXiCoalMineis70milliontonsandcoalmines,overahundredyearsofhistory,manyofwhichareoriginaltointroduceforeign.Withthedevelopmentofenterprises,thecurrentpowersupplysystemcannotguaranteethesafeandreliablepowersupply.Thisdesignisbasedonthecharacteristicsoftheexistingpowersupplysystem,forsomeequipmentandloaddistributionisimprovedtomeetthepowersupplyreliabilityandsecurity.powersystemdesigninclude：loadcalculations,groundsubstationsdesign,shortcircuitcurrentcalculations,groundhigh-lowvoltageequipmentselection,protectiondevices,Substationlightningprotectionandgrounding.Fromthedesignofthepowersupplysystemindifferentpartsofthetworoads35kVpowerline,themain6kVtransformersintothesingle-parentseparatelytotheMiningwiringelectricity.Accordingtothecharacteristicsofcoalsupplysystem,thedesignofthemainlinesarethelargestoperationofthesystemmeansthesetoflinesandequipmentandtochoose.LinXiCoalMine35kVpowersupplysystemdesignisonlypartofthepowersupplysystemInoue.Consideringthefifteenyears’serviceofLinXiCoalMine,inordertoensurethesecurityofelectricitysupply,reliable,thepaperdesignstheengineeringsystemwhichisreasonableforLinXiMinefromtheeconomicandtechnicalaspects.Keywords:LinXiCoalMine;35kV;PowerSupply;loadcalculations;electricalequipmentselection;shortcircuitcurrentcalculations2大学本科毕业论文说明书目录1概述..............................................12负荷计算...........................................42.1负荷分级与负荷曲线..........................................42.1.1供电负荷分级...........................................42.1.2负荷曲线...............................................42.2矿井用电负荷计算............................................52.2.1设备容量的确定.........................................52.2.2多个用电设备组的计算负荷...............................72.2.3负荷计算...............................................72.3功率因数补偿...............................................102.3.1提高功率因数补偿的意义................................102.3.2提高功率因数的方法....................................102.3.3电容器补偿计算........................................123主变压器选择与主接线方案的确定..........................133.1主变压器容量和台数的确定原则............................
