摘要某塑料制品厂全厂总配变电所及配电系统设计是对工厂供电的设计。本设计对工厂供电方式、主要设备的选择、保护装置的配置及防雷接地系统进行了相应的叙述，其中还包括全厂的负荷计算、高压侧和低压侧的短路计算、设备选择及校验、主要设备继电保护设计、配电装置设计、防雷和接地设计等。本设计通过计算出的有功、无功和视在功率选择变压器的大小和相应主要设备的主要参数，再根据用户对电压的要求，计算补偿功率，从而得出所需补偿电容的大小与个数。根据国家供电部门的相关规定，画出总配变电所及配电系统的主接线图。电气主接线对电气设备的选择，配电所的布置，运行的安全性、可靠性和灵活性，对电力工程建设和运行的经济节约等，都有很大的影响。,,,关键词：变电所，负荷计算，设备选型，继电保护ABSTRACTThewholeplantdistributionsubstationandpowerdistributionsystemdesignofaplasticproductsfactoryisforpowerplantdesign.Thedesignmakesthenarrativeaboutthefactorypowersupply,mainequipmentselection,protectiondeviceconfigurationandgroundingsystemforlightningprotection,whichalsoincludestheloadcalculationofthefactory,theshortcircuitcurrentcalculationofthehighpressuresideandlowpressureside,equipmentselectionandvalidation,themainequipmentrelayprotectiondesign,powerdistributionequipmentdesign,lightningprotectionandgroundingdesign.Thisdesignisbasedonthecalculationoftheactivepower,reactivepowerandapparentpowertransformerandthesizeofthecorrespondingmainequipmentmainparameter,thenworksoutthecompensationcomputingpoweraccordingtouserrequirementstovoltage.Thusitcanobtainthedesirablesizeandnumberofcompensationcapacitor.Accordingtotherelevantprovisionsofthenationalelectricitysector,thedesigndrawsthemainconnectiondiagramaboutthetotaldistributionsubstationandpowerdistributionsystem.Mainelectricalconnectionhavegreatinfluenceontheelectricalequipmentselection,thelayoutofthedistribution,operationsafety,reliabilityandflexibility,alsopowerengineeringconstructionandeconomyoftheoperationandsoon.Keywords:substations,loadcalculation,equipmentselection,relayprotection目录第1章绪论.......................................................-1-1.1工厂供电的意义..............................................-1-1.2工厂供电的要求..............................................-1-1.3工厂平面图..................................................-1-第2章主接线的设计..............................................-3-2.1总配电所的主接线设计的原则和意义............................-3-2.2变配电所主接线方案的技术经济指标............................-3-2.3主接线图....................................................-4-第3章负荷计算..................................................-6-3.1负荷计算的意义..............................................-6-3.2负荷计算的方法..............................................-6-3.3负荷计算示意图..............................................-7-3.4具体数据和负荷计算举例......................................-7-3.4.1原始数据...............................................-7-3.4.2负荷计算...............................................-8-第4章功率补偿计算及变压器的选择............................-12-4.1功率补偿计算...............................................-12-4.2变压器容量的选择...........................................-14-第5章短路电流计算.............................................-16-5.1短路电流计算方法及意义.....................................-16-5.2短路计算...................................................-16-5.2.1短路电流计算等效示意图.........
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