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当前位置:首页 > 商业/管理/HR > 咨询培训 > 110KV变压器继电保护系统设计-本科毕业设计说明书
安徽理工大学毕业设计本科毕业设计说明书110KV变压器继电保护系统设计110KVTRANSFORMERPROTECTIONSYSTEMDESIGN学院(部):电气与信息工程学院专业班级:电气#####学生姓名:####指导教师:######2013年6月1日安徽理工大学毕业设计I110KV变压器继电保护系统设计摘要本设计首先对电力工业发展、电力系统的概念和变电站的设计等做了一个初步的概括。然后进行变电站的负荷计算和无功补偿计算等等。再利用结果对主变压器台数和容量进行选择和主结线方案的确定。其中对主接线的选择做了较为详细的说明。选择过电流保护,对电网进行短路电流计算,包括适中电流的正序、负序、零序电流的短路计算,整定电流保护的整定值。在过电流保护不满足的情况下,相间故障选择距离保护,接地故障选择零序电流保护,同时对距离保护、零序电流保护进行整定计算。其中电器设备的选择主要包括:断路器、隔离开关、PT、CT、支柱绝缘子、套管、母线导体、避雷器、电抗器、高压熔断器等。关键词:变电站,继电保护,短路计算,设备选型安徽理工大学毕业设计II110KVTRANSFORMERPROTECTIONSYSTEMDESIGNABSTRACTThedesignisfirstonthedevelopmentofthepowerindustry,powersystemsubstationdesignconceptsandmadeapreliminarysummary.Thensubstationloadcalculationandreactivepowercompensationcalculationsandsoon.Andthenusetheresultstothenumberofunitsonthemaintransformerandcapacitytoselectanddeterminethemainwiringscheme.Oneofthemainterminalofchoicetodoamoredetailedexplanation.Selectovercurrentprotection,short-circuitcurrentcalculationonthegrid,includingthemoderatecurrentpositive,negativeandzerosequencecurrentshortcircuitcalculation,settingcurrentprotectionsettingvalue.Over-currentprotectionisnotsatisfiedinthecase,phasefaultdistanceprotectionoptions,selectthezerosequencegroundfaultcurrentprotection,whilethedistanceprotectionforzerosequencecurrentprotectionsettingcalculation.Theselectionofelectricalequipmentwhichinclude:circuitbreakers,disconnectors,PT,CT,insulators,bushings,busconductors,surgearresters,reactors,highvoltagefuses,etc.KEYWARDS:substation,relayprotection,shortcircuitcalculations,equipmentselection安徽理工大学毕业设计i目录摘要......................................................................IABSTRACT.................................................................II1.1供电技术的发展概况.................................................11.2变电站技术的发展...................................................11.3110kV变电站发展现状...............................................21.4变电站设计的基本要求...............................................32电气主接线的设计........................................................42.1主接线概述.........................................................42.2主接线设计原则....................................................42.3主接线选择........................................................53主变压器的选择..........................................................63.1主变压器的选择原则................................................63.1.1主变压器台数的选择...........................................63.1.2主变压器容量的选择...........................................63.1.3主变压器型式的选择...........................................73.1.4绕组数量和连接形式的选择.....................................73.2主变压器选择结果..................................................84所用电设计..............................................................94.1所用变选择........................................................94.2110KV变电站主接线图..............................................105110KV变电站电气部分短路计算...........................................115.1变压器的各绕组电抗标幺值计算.....................................115.210KV侧短路计算...................................................115.3110KV侧短路计算..................................................136导体和电气设备的选择...................................................146.1电气设备选择的基本条件...........................................146.1.1电气设备选择的一般原则......................................146.1.2电气设备选择的技术条件......................................146.1.3工作条件....................................................146.1.4短路稳定条件................................................146.1.5绝缘水平....................................................156.1.6环境条件....................................................156.2高压隔离开关与断路器的选择与校验.................................166.2.1隔离开关的用途..............................................166.2.2对隔离开关的基本要求........................................166.2.3隔离开关的类型..............................................176.2.4高压断路器的用途和类型......................................176.2.5对高压断路器的基本要求......................................176.2.6参数选择....................................................186.2.7隔离开关与断路器的选择......................................186.3互感器的选择与校验...............................................19安徽理工大学毕业设计ii6.3.1电流互感器的选择............................................196.3.2电压互感器的选择............................................216.4高压熔断器和避雷器的选择与校验...................................226.5母线与电缆线截面的选择与校验.....................................246.5.1110kV侧进线的选择..........................................246.5.2110kV母线的选择............................................256.5.310kV母线的选择.............................................256.5.410kV电缆出线的选择.........................................256.6绝缘子和穿墙套管的选择及校验.....................................266.6.1支柱绝缘子的选择与校验......................................266.6.2穿墙套管的选择与校验........................................267继电保护的配置.........................................................277.1继电保护装置基本原理.............................................277.2出线保护的配置...................................................297.2.1110kV侧出线的保护配置......................................297.2.235kV侧出线的保护配置........................
本文标题:110KV变压器继电保护系统设计-本科毕业设计说明书
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