毕业设计论文一继电保护配置与整定计算

四川大学本科毕业设计继电保护的配置与整定计算1继电保护的配置与整定计算（系统图36）专业：电气工程及其自动化摘要：一个电力系统的设计必须依据电力系统的继电保护四性要求（即选择性、速动性、灵敏性及可靠性）前提下进行的，设计电力系统也必须按照继电保护中各元件的配置与整定原则，对系统中的各元件进了保护的配置和整定计算，在设计电力系统前首先要对各个元件的参数机型计算，并对发电机和变压器配置相应的电流电压互感器。其次还要在电力系统中选定短路地点，并且对各个短路电流进行简单计算，一般情况下还需要参照继电保护中以最大和最小的运行方式分别计算两种运行方式下的三相短路电流、两项短路电流、单向接地短电流等等。完成上述工作后，还必须配合电力系统的保护装置，安装保护装置就必须进行整定计算，今天我们就一发电机型号为OF-50-2的发电机为例子，根据他的类型与容量分别配置纵差保护、复压保护、定子接地等电力系统标准的保护形式。关于变压力方面我们则以SFPL1-50000为重点，当然变压器也要在电力系统中安装保护装置，我们会对其配置瓦斯。差动、过流、过负荷等保护，电力系统中必须有电力线路的存在，作为重要连接组成部分我们主要给110KV线路配置距离保护、零序保护等，作为线路传送中还必须存在三相重合闸功能。母线的保护也十分重要，主要配置完全电流差动保护。本次毕业设计的主要参数来源依赖电力系统继电保护配置及整定计算》中的方法与原则，计算出保护的动作整定值与其动作时限值。关键词：电力系统；继电保护；短路；配置；整定四川大学本科毕业设计继电保护的配置与整定计算2RELAYPROTECTIONCONFIGURATIONANDSETTINGCALCULATION(systemfigure36)Major:ElectricalEngineeringandAutomationStudent：limingruiInstructor:HaoChenAbstract:thedesignofapowersystemmustbebasedonthepowersystemrelayprotectionofrequirements(i.e.,selective,quick,sensitiveandreliable)carriedoutunderthepremise,designthepowersystemmustalsobeinaccordancewiththecomponentsintherelayprotectionconfigurationandsettingprinciple,toeverycomponentinthesystemintotheprotectionconfigurationandsettingcalculation,infrontofthedesignofpowersystemfirsttomodeltheparametersofeachelementcalculation,andthecorrespondingconfigurationofgeneratorandtransformercurrentandvoltagetransformer.Secondlyalsoinpowersystemselectedplaceshort,andtheshortcircuitcurrentofeachsimplecalculation,generallyalsoneedtoreferenceinrelayprotectionbasedonoperationmodeofthemaximumandminimumarecalculatedundertwooperationmodesofthethree-phaseshort-circuitcurrent,short-circuitcurrent,one-waygroundingshortcurrentandsoon.Thecompletionofthework,mustalsobecombinedwithpowersystemprotectivedevice,protectiveinstallationsmustsettingcalculation,todayweatypeofgeneratorforOF-50-2generatorforexample,accordingtohistypeandcapacityarerespectivelyarrangedlongitudinaldifferentialprotection,voltageprotection,statorgroundingpowersystemstandardformsofprotection.WefocusonSFPL1-50000asachangeofpressure,ofcourse,thetransformershouldbeinstalledinthepowersystemprotectiondevices,wewillconfigurethegas.Differential,overcurrent,overloadprotection,powersystemmustbetheexistenceofpowerline,asanimportantconnectingpartwemainlyto110kVlineconfigurationdistanceprotection,zerosequenceprotection,asatransmissionlinemustalsobethree-phasereclosingfunction.Busbarprotectionisalsoveryimportant,themainconfigurationoffullcurrentdifferentialprotection.Themainparameterofthisgraduationprojectisthemethodandprincipleofthepowersystemrelayprotectionconfigurationandsettingcalculation.Keywords:powersystem;relayprotection;shortcircuit;configuration;setting四川大学本科毕业设计继电保护的配置与整定计算3第一章互感器的配置......................................................................................................................................41.1发电机互感器配置...............................................................................................................................41.2变压器互感器配置...............................................................................................................................51.3线路互感器配置...................................................................................................................................61.4母线互感器配置...................................................................................................................................6第二章等值参数的计算..................................................................................................................................62.1发电机...................................................................................................................................................62.2变压器...................................................................................................................................................72.3线路.......................................................................................................................................................9第三章系统运行方式......................................................................................................................................103.1系统运行方式的选择原则.................................................................................................................103.2本设计运行方式的确定......................................................................................................................11第四章短路计算...............................................................................................................................................114.1最大运行方式下系统各序阻抗计算.................................................................................................124.2最小运行方式下各序阻抗计算.........................................................................................................204.3各点短路电流的计算.........................................................................................................................29第五章保护的配置与整定计算...................................................................................