搜索
基于PSCAD和MATLAB的电力系统电磁暂态仿真研究摘要电磁暂态的研究主要是针对电力系统出现故障时对系统参数进行分析。本文根据电力系统的故障分析理论，运用电磁暂态仿真软件PSCAD/EMTDC和系统仿真软件MATLAB，以双电源供电系统为模型分别对其进行了单相接地、两相相间短路及三相接地故障条件下的电磁暂态仿真分析，通过仿真结果比较，得出两种仿真环境下的仿真波形几乎一致，与故障分析算例基本吻合，这说明这两种仿真环境都适用于电力系统的电磁暂态仿真，但在故障设置方面，PSCAD的设置更为灵活方便。同时，由PSCAD建立一个简单的交直流传输系统为模型，根据PSCAD-MATLAB接口技术原理，实现了接口环境下的电磁暂态仿真研究，这说明了PSCAD-MATLAB接口仿真技术在电磁暂态分析中的有效性。关键字：电磁暂态；PSCAD；MATLAB；接口技术内蒙古科技大学毕业设计说明书（毕业论文）ThesimulationstudyforelectromagnetictransientinpowersystembasedonPSCADandMATLABAbstractElectro-magnetictransientresearchmainlyaimsatpowersystemwhichforanalysisofsystemparameterswhenitismalfunctioning.Basedonthetheoryoffaultanalysisinpowersystem,theusageofPowerSystemComputerAidedDesign/ElectromagneticTransientsinDCsystemandMatrixLaboratory,aswellasthemodeloftwo-sourcesupplysystem,thispapermainlyillustratesthesimulationforelectromagnetictransientsthroughtheapplicationofavarietyoffaults,suchassingle-phaseearthfault,inter-phaseshortcircuit,andthree-phasegroundingfault.Bythecomparisonofsimulationoutcomes,itshowedthatthesimulationwaveformsundertwokindsofsimulationenvironmentdoesalmostunanimouslywhichissimilartotheexampleoffaultanalysis,thetwosimulationenvironmentsaresuitablefortheresearchofelectromagnetictransientsinpowersystem.Butinfaultsetting,thesettingofPSCADismoreagileandconvenient.Meanwhile,itpresentedtheimplementationofthesimulationstudyforelectromagnetictransientwiththebasisoftheprincipleofPSCAD-MATLABinterfacetechniquesandthemodelestablishedbyPSCADofasimpleAC/DCtransmissionsystem,whichhasshownthattheeffectivenessofPSCAD-MATLABinterfacetechniquesinthestudyofelectromagnetictransients.Keywords:electromagnetictransients;PSCAD;MATLAB;interfacetechniques内蒙古科技大学毕业设计说明书（毕业论文）目录摘要.........................................................................................................................................IAbstract......................................................................................................................................II第一章概述...............................................................................................................................11.1国内系统事故概况......................................................................................................11.2电力系统的电磁暂态数字仿真概述..........................................................................21.3本文主要工作..............................................................................................................3第二章电力系统的故障分析...................................................................................................52.1电力系统的故障介绍..................................................................................................52.1.1电力系统的短路故障概念和分类...................................................................52.1.2电力系统的短路故障原因及其危害...............................................................62.2电力系统的不对称故障分析方法—对称分量法......................................................72.2.1对称分量法原理...............................................................................................72.2.2对称分量法的应用...........................................................................................82.2.3正序等效定则.................................................................................................10第三章基于PSCAD/EMTDC和MATLAB的电磁暂态仿真设计.....................................123.1PSCAD/EMTDC的工作环境介绍............................................................................123.2MATLA的工作环境介绍..........................................................................................153.3基于PSCAD和MATLAB的电力系统电磁暂态仿真设计...................................193.3.1基于PSCAD交流电力网络的模型建立......................................................193.3.2基于MATLAB交流电力网络的模型建立...................................................243.3.3电力系统的故障设置......................................................................................28内蒙古科技大学毕业设计说明书（毕业论文）3.3.4时域仿真分析..................................................................................................30第四章基于PSCAD/EMTDC和MATLAB的电磁暂态接口仿真研究.............................324.1PSCAD和MATLAB的接口技术介绍.....................................................................324.1.1接口技术的背景.............................................................................................324.1.2接口技术原理及接口的实现过程.................................................................334.2基于PSCAD-MATLAB的电力系统电磁暂态仿真...............................................354.2.1基于PSCAD的交直流系统的模型建立......................................................354.2.2电力系统的故障设置.....................................................................................394.2.3PSCAD-MATLAB的接口环节......................................................................404.2.4时域仿真分析.................................................................................................414.2.5接口仿真分析.................................................................................................43第五章结束语..............................................................................................................