35Kv变电站二次电气部分设计

xxxxxxx学院毕业设计（论文）摘要I摘要变电站二次部分设计是变电站设计中必不可少的环节，变电站的二次部分包括测量仪表、信号系统、继电保护、自动装置和远动装置，为能实现对全站的主设备，输、配电线路的自动监视、测量、控制和微机保护以及调度通信的综合性的自动化二次系统。合理的方案设计和整定计算对保证变电站安全、稳定、可靠的运行起着非常重要的作用。本设计是根据平煤八矿35kv变电站改造工程的技术要求，结合其一次部分设计的实际情况，设计出的一套符合要求的保护配置方案。设计的主要内容是对35kv变电所一次部分进行相应的继电保护设计和二次回路初步设计。其中主要包括：主变压器的保护方案设计及整定计算；母线保护的配置与整定计算；断路器、隔离开关的控制及操作回路设计；互感器的配置与接线设计；信号回路设计等。依据变电站一次部分设计的特点和要求，对其变压器、母线等一次设备的选型和接线方式进行分析，最终采用南瑞继保公司生产的保护设备。如变压器的保护配置选用的型号为RCS-9679变压器保护装置，该保护装置集变压器主保护、后备保护、非电气量保护为一体的综合自动化保护装置，且完全满足35kv电压等级的变电站设计的需要。关键词：变电站，微机保护，整定计算，二次系统xxxxxxxxx院毕业设计（论文）AbstractIIAbstractThetwopartofthedesignofsubstationsubstationdesignistheessentiallinkinsubstation,twopartisincludedformeasuringinstrument,signalsystem,relayprotection,automaticdevicefortelecontroldevicedevelopmenttoachievethestation'smainequipmentandtransmission,distributionlineautomaticmonitoring,measurement,automaticcontrolandmicrocomputerprotectionandschedulingcommunicationofintegratedautomationsystemfortwotimes.Reasonabledesignandsettingcalculationoftransformersubstationtoensuresafe,stable,reliableoperationplaysaveryimportantrole.Thisdesignaccordingtothecoalmineeight35kVsubstationprojecttechnicalrequirements,combinedwiththeactualsituationofapartdesign,designasetofcompliancewiththerequirementsoftheprotectionconfigurationscheme.Designofthemainelementsofthe35kVsubstationisapartofthecorrespondingdesignofrelayprotectionandtwolooppreliminarydesign.Whichmainlyinclude:maintransformerprotectionschemeandsettingcalculation;busprotectionconfigurationandsettingcalculationofcircuitbreaker,isolatingswitch;thecontrolandoperationofcircuitdesign;transformerconfigurationandwiringdesign;signalcircuitdesign.Onthebasisofasubstationpartofthedesignrequirementsandthecharacteristicsofthetransformer,bus,etc.oncetheselectionofequipmentandwiringmodeanalysis,eventuallyadoptingNARI-RELAYSistheproductionoftheprotectiveequipment.SuchasthetransformerprotectionconfigurationselectionofmodelsfortheRCS-9679protectiondeviceoftransformer,theprotectivedevicesettransformermainprotection,back-upprotection,nonelectricityprotectionasoneoftheintegratedautomaticprotectiondevice,andfullymeetthe35kVvoltagetransformersubstationdesignneeds.Keywords：Substation，Microcomputer，Settingcalculation，SecondarySystemxxxxxxxxxx院毕业设计（论文）目录III目录1绪论........................................................11.1概述................................................11.2国内外研究现状和发展....................................11.3本设计课题的主要内容....................................22变压器微机保护设计...........................................32.1变电站一次部分设计基本参数.............................32.1.1变电站的主接线形式...............................32.1.2变电站的主变压器.................................32.1.3变电站的短路计算数据.............................32.1.4变电站的主要配电装置.............................42.2变压器故障类型及相应保护...............................42.3主变压器保护配置方案与选型.............................52.3.1变压器保护配置方案...............................52.3.2主变压器保护配置选型.............................52.4变压器主保护...........................................62.4.1基本配置及规格...................................62.4.2变压器差动保护...................................62.4.3装置动作原理说明.................................72.4.4保护总体流程.....................................92.5后备保护配置方案设计..................................102.6非电气量保护配置方案设计..............................102.7变压器比率制动差动保护的整定计算......................103母线微机保护设计............................................143.1母线保护配置原则与规范................................143.2母线保护配置方案设计与选型............................143.3母线保护配置及保护原理................................143.3.1母线差动保护....................................163.3.2断路器失灵保护..................................163.410kv母线比率差动保护的整定计算........................174断路器、隔离开关的控制及操作回路设计........................194.1断路器、隔离开关的配置原则与规范......................194.1.1断路器控制回路设计原则..........................194.1.2隔离开关控制回路设计原则........................194.2控制及操作回路设计....................................204.2.1智能操作箱选型..................................204.2.2PCS-222C智能操作箱功能配置.....................204.2.3各插件简要说明..................................214.2.4指示灯说明......................................265互感器的接线设计............................................275.1常规互感器与电子式互感器比较..........................27xxxxxxxxxx院毕业设计（论文）目录IV5.2互感器的选型..........................................285.2.1互感器的选择....................................285.2.2PCS-220系列合并单元介绍.........................295.3互感器配置方案........................................306信号回路和微机保护组屏方案设计..............................316.1变电站信号回路设计....................................316.1.1IEC61850介绍....................................316.1.2GOOSE介绍.......................................326.1.3变电站GOOSE组网................................326.2变电站组网方案........................................336.2.1变压器保护组网方案..............................336.2.2母线保护组网方案................................34结论...........................................................36参考文献.......................................................37致谢...........................................................39附录.........