某机械厂降压变电所的设计毕业设计

《某机械厂降压变电所的设计毕业设计》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。

1、2012届毕业设计（论文）腾达机械厂降压变电所的设计系、部：电气与信息工程系学生姓名：指导教师：职称：专业：班级：学号：2012年5月38摘要电能是现代工业生产的主要能源和动力。机械厂供电系统的核心部分是变电所。变电所主接线设计是否合理，关系到整个电力系统的安全、灵活和经济运行。本设计在给定机械厂具体资料的基础上，根据本厂所能取得的电源及本厂用电负荷的实际情况，并适当考虑到工厂生产的发展按照安全可靠技术先进经济合理的要求确定变电所的位置，确定变电所主变压器的台数和容量类型选择变电所主接线方案及高低压设备和进出线确定二次回路方案，选

2、择整定继电保护装置，确定防雷和接地装置，最后按照要求写出设计说明书。关键词：电能；变电所；二次回路；变压器38ABSTRACTTheelectricityismodernindustrialproductionofmainsourcesofenergyandmotiveforce.Thecoreofthepowersupplysystemofmachineryfactoryissubstation.Thewiringisreasonabledesignsubstation,relatedtothewholepowersystems

3、ecurity,flexibleandeconomicoperation.Thisdesigninagivenmachineryfactoryconcretematerialfoundation,accordingtoourfactorywillachievethepowerandtheactualsituationofourelectricityload,andappropriateconsiderationtothefactorytothedevelopmentoftheproductionaccordingtothesafe

4、andreliabletechnologyadvancedeconomicandreasonablerequiredthepositionofthesubstation,determinethemaintransformersubstationNumbersandcapacitytypechoiceLordwiringschemesandhighorlowvoltagesubstationequipmentanddeterminetheoutletandthesecondarycircuitsolutions,choosethes

5、ettingrelayprotectiondevice,determinethelightningprotectionandgroundingdevice,finallyaccordingtotherequestandwritethedesignspecification。Keywords：power；substation；Thesecondarycircuit；transformer38目录1绪论··························································11.1工厂供电的

6、意义和要求·······································11.2工厂供电设计的一般原则·····································21.3本机械厂变电所的设计内容及依据·····························22负荷计算和无功功率计算及补偿补偿································42.1负荷计算概述···············································42.2负荷计算的方法······

7、·······································52.3无功功率的补偿·············································83变电所主变压器及主结线方案的选择································93.1变电所的概述···············································93.2变电所主接线选择38···········································93.3高压线路导

8、线的选择·········································103.4低压线路导线的选择·········································104变电所变压器和主接线方案的选择······