Simulink下单机—无穷大仿真系统的搭建及系统故障仿真测试分析电气工.pdf

摘要电力工业迅速发展，电力系统规模日益庞大和复杂，出现的各种故障，会给发电厂以及用户和电厂内的多种动力设备的安全带来威胁，并有可能导致电力系统事故的扩大，从技术和安全上考虑直接进行电力试验可能性很小，迫切要求运用电力仿真来解决这些问题，依据电网用电供电系统电路模型要求，因此，论文利用MATLAB的动态仿真软件Simulink搭建了单机—无穷大电力系统的仿真模型，能够满足电网可能遇到的多种故障方面运行的需要。论文以MATLABR2009b电力系统工具箱为平台，通过SimPowerSyetem搭建了电力系统运行中常见的单机—无穷大系统模型，设计得到了在该系统发生各种短路接地故障并故障切除的仿真结果。本文做的主要工作有：（1）Simulink下单机—无穷大仿真系统的搭建（2）系统故障仿真测试分析通过实例说明，若将该方法应用到电力系统短路故障的诊断中，快速实现故障的自动诊断、检测，对于提高电力系统的稳定性具有十分重要的意义。关键词电力系统；暂态稳定；MATLAB；单机—无穷大；AbstractWiththerapiddevelopmentofpowerindustry,thescaleofpowersystemisincreasinglylargeandcomplex,allkindsoffault,topowerplantsandpowerplantsandusersinavarietyofpowerequipmentsafetythreat,andislikelytoleadtotheexpansionofpowersystemaccident,fromthetechnicalandsafetyconsideringdirectelectricityexperimentwascarriedoutonthepossibilityisverysmall,urgeelectricpowersimulationareusedtosolvetheseproblems,accordingtothepowersupplysystemofpowergridpowercircuitmodel,asaresult,paperuseMATLABdynamicsimulationsoftwareSimulinkhassetupasimulationmodelforthesingle-infinitepowersystem,cansatisfytheneedsoftherunningofafaultmayencounteravarietyofways.PaperR2009bwithMATLABtoolboxpowersystemasaplatform,throughSimPowerSyetemsetuppowersystemintheoperationofthecommonsingle-infinitysystemmodel,designthevariouskindsofshort-circuitgroundfaultoccursinthesystemandsimulationresultsoffaultremoved.Themainworkis:(1)Buildingthissimulationsystemofsingle-infiniteunderSimulink(2)FaultsimulationtestanalysisofsystemThroughexamples,ifthismethodtothepowersystemfaultdiagnosis,fastfaultdetectionanddiagnosis,automaticforimprovingthestabilityofpowersystemhasimportantsignificance.keywords：Single—infinite；SimPowerSyetem；Shortcircuitfaults；Wavelettransform目录绪论................................................................1第一章电力系统稳定性概述...........................................11.1电力系统的静态稳定性...........................................11.2电力系统的暂态稳定性...........................................1第二章基于MATLAB的电力系统仿真...................................32.1电力系统稳定运行的控制.........................