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1、工厂供电设计摘要本毕业设计为工厂变电所设计，对在工厂变电所设计中的若干问题：负荷计算，三相短路分析，短路电流计算，高低压设备的选择与校验，变压器的继电保护，变电所二次回路及自动装置，防雷与接地，变电所的过电压保护，计量，无功补偿等几方面的设计进行了陈述，并对供电主接线的拓扑结构进行了阐述。该工厂变电所采用10kV单电源进线，采用一台1600kVA的主变压器，最大设备容量1636kW，采用并联电容器进行低压集中补偿，对变压器进行过电流，电流速断，瓦斯保护，按三类防雷建筑物设防，采用强弱电联合接地系统对建筑物进行保护。在对供电
2、系统短路计算的基础上，进行电力电缆和电气设备的选择设计，同时也对户外平面布置进行了初步的设计。关键词工厂供配电，继电保护，防雷与接地，负荷计算ⅠABSTRACTThisgraduationprojectisdesignedforthefactorytransformersubstation,tocertainquestionsinfactorytransformersubstationdesign:theloadcomputation,theanalysisofthree-phaseshort-circuits,thesh
3、ort-circuitcurrentcomputation,thechoiceandverificationofhighandlowpressureequipment,thetransformerrelayprotection,thesecondarycircuitofthetransformersubstationandtheautomaticdevice,anti-thunderandtheconnectiontotheearth,thetransformersubstationovervoltageprotectio
4、n,themeasurement,theidleworkcompensatedandsoon,Alltheaboveaspectsandthestructureofthepowersupplyhostwiringtopologyhavebeenstated.Thetransformersubstationwitha10kVsinglepowersourcecoilinituses1600kVAmaintransformer,thebiggestcomputationshouldersofwhichis1636kW.Itad
5、optstheshuntedcapacitortocarryonthelowpressurecentralismforcompensationandsetsprotectionforthetransformerbycarringontheelectriccurrenttoitbreakingthespeedoftheflowgasprotection,garrisonsaccerdingtothethirdkindofanti-thunderbuildings,andusersthestrongandweakelectri
6、cityunionearthsystemtocarryontheprotectiontothebuilding.Basedonthecomputationofshort-circuitstothepowersupplysystem,theprojecthasachoicedesignofthepowercableandtheelectricalequiomentandapreliminarydesigntotheoutdoorsplanearrangementatthesametime.Keywordsthepowerdi
7、stributionandsupplyinfactory,therelayprotection,anti-thunderandtheconnectiontoearth,theloadcomputationIIII目录摘要……………………………………………………………………………………………ⅠABSTRACT………………………………………………………………………………………ⅡI1绪论……………………………………………………………………………………………11.1课题设计背景………………………………………………………………………
8、………11.2工厂供电设计的一般原则…………………………………………………………………11.3工厂供电设计内容及步骤…………………………………………………………………22负荷计算与功率补偿…………………………………………………………………………42.1负荷计算的内容和目的…………………………………………
