毕业设计（论文）--某厂总降压变电所及配电系统设计

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1、兰州理工大学毕业设计（论文）题目某厂总降压变电所及配电系统设计姓名学号专业班级指导教师日期67摘要众所周知，电能是现代工业生产的主要能源和动力。供电系统就像工厂的心脏，对工厂的运行有着至关重要的作用。根据变电所配电回路，负荷要求的可靠性级别和计算负荷综合主变压器台数，确定变电所高、低接线方式。一般10KV及以下高压线路及低压动力线路，通常先按发热条件来选择截面，再校验电压损耗和机械强度。此外还需要注意防雷接地等安全措施，保证供电系统的正常运行。关键词：变电所，变电所接线，防雷接地，继电保护67ABSTRABSTRWeallknow,electricityisthemainenergy

2、ofmodernindustrialproduceandpower。Powersupplysystemistheheartofthefactory,thefactoryoperationplaysavitalrolein.Accordingtothenumberofsubstationpowerdistributioncircuit,theloadlevelofreliabilityrequiredandthenumberofintegratedcomputingloadterminalsItsbasicrequirements,whichhavetobeflexibletosecu

3、retheeconomic,easytoinstallandeasymaintenance.10KVandunderhighlineandlowvoltagepowerlines,oftenpressthehotconditionstoselectthesection,thencheckthevoltagelossandmechanicalstrength.Inadditiontotheattentionoflightningprotectiongroundingsafetymeasures,toensurethenormaloperationofpowersupplysystems

4、.Keyword:SubstationSubstationconnectionLightningprotectiongroundingRelayprotect67目录第一章负荷计算和无功功率偿·················································11.1负荷计算·································································11.1.1负荷计算的目的及方法··················································11.1.2各车间的负

5、荷计算······················································11.2无功功率补偿及其计算·····················································10第2章供电方案的设计······················································122.1变电所位置和型式的选择··················································122.1.1变配电所位置选择的要求·····················

6、···························122.1.2高压线路的接线方式·····················································122.2变电所主接线的选择······················································122.2.1对工厂变电所主接线的要求··············································122.2.2工厂总降压变电所常见的主接线方案······································132.2

7、.3变电所主接线的选择····················································15第3章变电所主变压器台数及容量的选择·······································163.1变压器选择的原则························································163.1.1变电所主变压器台数的选择原则··················