(完整word版)基于MATLABSimulink的电力系统仿真实验.docx

基于MATLAB/Simulink的电力系统故障分析IOkv系统三相短路分析三相短路（以中性点不接地系统模型为类）模块搭建：三相短路各元件参数设置如下:gBlOCkParameters:TheePhaseSoUrCeThree-PhaseSOllrCe(nasklink；7hrGG-phasVOItaZGSoUrCGinSGrieKWithRLbxanch.Par>ntsPhasetO-PhaSGsvoltaG(V):110.5e3PhaseanrlGfchaseA(degreGs):lFrtQutncy(HX):同InternalConn,action:YSPeCifriaped&nceUSXnSSh-XtvCirCUitIeVeISoUreeresistance(Oh=Si:IO.009SoUrCeinductance(H):-116.58e-5-AITlrOKCancelHelpIIIBlOCkParameters;LinelIS-Three-PhasePZSeCtiOnLin已口a5%(Iink)ThiBblockinpleaentsathr«t-phi.iPIsectionlintoXePreStitathiGG-phasGtransaisionline.ThigblockiGDresentsOnlyOnGPlsection.TOInplenente2>orethatOnePISeCtiPnJyousiDlrneedtoCanneCtCOPieaQfthisblockinsexiesParaaQtQTSFreQUenCyUeeclforRLCspecification(Hz):F*PoIitiVe-Indzo-seau¾ceresiBtances(0haska)K：RO:I0.012730.3SG4：Positive*andZeroeSGauencOinductances1)LILO:IT0.9327e-34.1264e-3PCSitiV-and4ro-ssau4neeca-pacitanees(FJka；IeICOI:I12.74e-97.751e-9LineSeetiOnIGnSth(ka:.1130OKCanCeIKeIPApplyBlockParameters;Load4Tixice-PfcaseSeesRLCLoadaask(Iixlk)ZsDl>3ntariecRLClead.Pajastt<rsConficurationY(fIoatine)司N«iapas-to-pha*vo-ltacVa(Vra>10e3Soainalfeuencyfn(Hz):lsActivtDorP(I):5ZnductlvereactivePOgrQL(positivecar):I5CaoaeitivereactivepwerQe(nerativa*):I5MeasuresentsIXone0BlockParameters:V-IThxee-PhaseVyeasureaent(Ba(link)Thisblockisusedtoseasurethree-phasevoltagesandcurrentsinacircuit.Whenconnectedinseriesithathree-phaseeIeaentfitreturnthethreepha-tofroundvoltagesandlincurrentB.Thtblke&noutputthtvoltteesandeury4nt8in.perunitvalues«yinolttAndamperes.Checkthe&pDropxiatebozesifyouranttooutputthevoltagesandcurrentsin.DUPaaaet4r5V«ltaceaeasure3«ntphastophase7UceilabelSignal(usaFzqstolocktocoll«ctthisinaL)S.V>bcVoltaceinPUCuxrnt3tasu<sftnty«sUsealabelSicnallabl(utaFxoenblocktocollectthisinal)S-IbeCurrentsinPUBJc5s3,N MUItimeterlHdPAaIbbQ tefementsLCAd3LO43 IUd3Tht, F,flClfult. B IhrCQ-Pbazc fulliur C IHLeC 7u all/FAulV AU MiLCad3G0d3Ib*(Mh* I>ultlfult B Ih*ec-7hasc F nlVl au2V C IhtraA 7 FArJItIZFAalt ANPIeIEd MeaSULoiaLft<lR<<rf)ve*f-lPIOt SdAeigpa g Ie.PiCXSOUrCeBIQCkParameters;FromFoReceiveSiEnaICfrtheGOtOblockIriththeSDeClfiGd:asIfthetaeisdefinedasrscoped,intheGOtOblock,thenaGOtOTaEVisibilityblockaustteusedtodefinetheVieibiIityOfthttacAfter,UPdatDiaCraatheblockicondisplaystheSeleCtedtagnase>LocaltaesareencIOSedinbrackets.,andSeODedtagna=esareSneIOSedinbraees；J).OKCanCaIIEelD)WFUnCtiOnBIOCkParaneters;AddlCu,AcldcrsubtractXnPUtS-SCIfTCneOithefol.ovng:a) stringCOntainingor-foreachInPLtport,forSPaCerIeITefllPortS(e.c.一Db) SCalar>)Avalue>1SUalallinputs:1SUnlltstsOfatingleInPLtvctorMainISifnftIdatatypaICOnshae:re:l&ngulaxLIStOfKXeni:I*.SaSDlet-n*1forIEherXted):l,XICancelIHeIDIAppb一EroLJ.R<civSdKnalSfroatheGotobl>ckWiththespecifiedtar-Ifthttaeisd<fi4dseoped,intheGotcMceltthenaGOtO7arVigibilitybloekustbeUSGCltodefinetheVigibilityOfthetag.After,UpdateDiaeraIDj：theblockicondisplaystheSeIeCtedtagnaze(IOCaItagsareenclosedinbrackets,andSCQPedtagnazesaxeenclose!inbraces：)OKCancelIHelp.1FUnCtiOnBlOCkParameters:DiSCrete3PhaScSeqUeflCeAnalyZcr2_K_一Diet3-PhESneAnly<(linkThisdiscreteblockoutputsthpoitiv-1nfativ-.zro-orallBuaccoaponent(s)(3(anitudandPhase)ofas«tofthreebalanced.orunbalanced»ienfi.l£icaaycontainharaonics.ThethreeseQuenceCOSDanent3areCoaputedasfolllows:Vi=1/3*(Va*Vb'2*Vc)V2-1/3«(V-2¾a«Vc)VO=1/3«TI*Vb，VC)rhrt;Va.-Vb,Vc=inputphasersatfrqucyazxp(J*2pi3)=1<*120dg.coaplxcpratorThtinputcontainsthtvctorixd<iEalofthtthreeVaVbV,ciinutoida.1sicn&lsOutputoneandtwogiverespectiv<lytheaastudepeakvalu*)andphase'decprecs.c£thespec££xcdUeQUUtloeoosponcn(e).ForthefitcycleofSisulation,theouputsareheldconstanttthevaluesspecifiedbytheparameter*nitialinput*.Faa=etejs三相短路仿真波形如下:如图1a、b、c三相短路电流仿真波形图分析：正常运行时，a、b、c三相大小相等，相位相差120度。发生三相短路时，a、b、C三相电压全如图2一一线路1的零序电流分析：在没有故障时，没有零序电流，突然出现故障时，零序电流为故障电流的3倍，为31如图3线路1的零序电分析：在没普故障时，没有零序电压，突然出现故障律电需为故障电压的3倍，为如图4一一线路1的故障相电如图5线路3的零序电流如图6一一线路3的短路电流如图7一一三相对称电源电压如图8一一线路2的零序电流分析：在没有故障时，没有零序电流，突然出现故障时，零序电流为故障电流的3倍，为310。如图9一一三相对称电源电流如图10一一三相对称电源零序电压如图11一相短路电流IOkV系统两相短路分析仿真模块搭建同三相短路，只有三相故障模块参数改变如下：注：a、b两相短路m<tr¾:THr<-PfyFltlJznrQa-Riia,ZGFUcgtn;Udcu飞o<rDheeea.ndthedxrctIyfrmb-tieXyouChQCkth。inoutw£21aooar.(asu>l2sx)prexaaruX<cto-crcut)o-ooccroundYOMeandefinetHfaultnia£n«dalocboxoxapolanexternal.Ia1.Kx«rnolOonatx。！'t。工，tHeaxnalcontrol7OprasaaFauixPtiasaDFault