塑料制品厂全厂总降压变电所及配电系统设计

课程设计说明书题目:塑料制品厂全厂总降压变电所及配电系统设计院（部）：电气与信息工程学院专业班级：电气10-6班学生姓名：刘飞强易怀权黄超彭德霖李建楚衍春指导教师：杨岸2013年7月6日电气工程及其自动化专业课程设计-1-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，继电保护电气工程及其自动化专业课程设计-2-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电气工程及其自动化专业课程设计-3-目录摘要............................................................................................................................................-1-ABSTRACT...............................................................................................................................-2-目录............................................................................................................................................-3-1设计任务................................................................................................................................-5-1.1设计原则.....................................................................................................................-5-1.2设计内容.....................................................................................................................-5-1.3设计要求.....................................................................................................................-5-1.4设计依据.....................................................................................................................-5-2负荷计算................................................................................................................................-6-3无功功率计算和电气设备选择............................................................................................-7-3.1无功功率计算及补偿电容器选择..............................................................................-7-3.2变压器选型..................................................................................................................-8-3.2.1主变压器选型..................................................................................................-8-3.2.2各变电所变压器选择.......................................................................................-8-3.3架空线的选择...........................................................................................................-10-3.4母线选择...................................................................................................................-11-4电气主接线图......................................................................................................................-12-5短路电流的计算及电气设备的选择..................................................................................-12-5.1短路电流的计算........................................................................................................-12-5.1.1三相短路电流的计算目的.............................................................................-12-5.1.2短路电流的计算公式（标幺值计算方法）：...............................................-12-5.1.3各母线短路电流列表.....................................................................................-13-5.2电气设备的选择........................................................................................................-14-5.2.1电气设备选择的原则.....................................................................................-14-5.2.2高压设备的选择.............................................................................................-14-5.2.310kv高压侧电气设备选择............................................................................-16-6．继电保护配置....................................................................................................................-18-6.1主变压器保护..........................................................................