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PSCAD例子的学习笔记一、黄金分割法（在optimum_run）二、电能质量（在PowerQuality中）软件的英文说明：ThisapplicationexampleisbasedonacaseorigionallycreatedattheManitobaHVDCResearchCentrebyDr.M.Reformat,inManitoba,Canada.ThiscaseillustratestheuseofaSTATCOMtoprovideactivefilteringfortheacsideofa6-pulseconvertersystem.TheActivefilterisconnectedthrougha20kVA,Y-Ytransformertoa200V,50Hz,3-Phasebus,witha6-pulseconverterloadREFERENCE:H.FujitaandH.Akagi,'APracticalApproachtoHarmonicCompensationinPowerSystems-SeriesConnectionofPassiveandActiveFilters',IEEETrans.onInd.Applications,vol.27,No.6,Nov/Dec1991,pp.1020-1025RevisedbyJ.E.Nordstrom-September2000软件的英文说明。ThisapplicationexampleisbasedonacaseorigionallycreatedatManitobaHydro,inManitobaCanada.Theproblemwasthatfarmanimals,duringwintermonths,wereexperiencingatinglevoltage,duetosuspectedpoorgroundingonthelocalgroundgrid.UsingPSCAD,theengineerswereabletosimulatethelocalsystemanddeterminethatthegroundingproblemwasatleastpartiallyrelatedtogroundrodresistance.Duringthewintermonths,thegroundconductivityispoor,resultinginapoorconnectionbetweenthegroundrodsandearth.Whilethiscaseisrunning,youcanadjustthegroundrodresistance.Noticethechangeinvoltageacrossthecow!RevisedbyJ.E.Nordstrom-July2000三、继电保护Case1:-TwoThevinenImpedancesourcesconnectedviaone100kmtransmissionline.（双电源系统通过100km长度相连）-Systemvoltageis230kVsettableviasourceequivalents.（230kV）-Simulatestwosubstationsconnectedviaonetransmissionline.(仿真两个变电所之间的传输线路)-Fourfaultpositionsforfullfaultcontrolaheadandbehindstationrelays.（设计了四个故障点）-Twobreakersareindependentlytimedcontrolled.(Defaultisclosed).（两侧的断路器可以通过时间，默认是合上的）-Independentbreakerpoletrippingispossible.（可以实现分相操作）CASE2：多个故障点。其它一样CASE3：双回线CASE4：双回线的不同故障点CASE5：双回线的不同故障点再加支出一条线路CaseDescription:-TwoThevinenImpedancesourcesconnectedviatransmissionlinesandaT-tap.-Onetransmissionlineterminatedwithatransformerofconfigurablesizeandtype.-Systemvoltageis230kVsettableviasourceequivalents.-Simulatesthreesubstationsconnectedviathreetransmissionlines.-Eight(8)faultpositionsforfullfaultcontrolaheadandbehindstationrelays.-Fivebreakersareindependentlytimedcontrolled.(Defaultisclosed).-Independentbreakerpoletrippingispossible.CASE6：双回线的不同故障点再加支出一条线路与CASE5类似，细节有所不同。故障点任意设置。CaseDescription:DOUBLELINEWITHAT-TAP-TwoThevinenImpedancesourcesconnectedviatransmissionlinesandaT-tap.-Onetransmissionlineterminatedwithatransformerofconfigurablesizeandtype.-Systemvoltageis230kVsettableviasourceequivalents.-Simulatesthreesubstationsconnectedviafourtransmissionlines.-Ninefaultpositionsforfullfaultcontrolaheadandbehindstationrelays.-FaultscanbeplacedMidlineonLine1,Line2andLine3-UsermusttakeCaretoensurethesumofthesections,T1throughT6sumtothelengthofthelinestheyaresimulating.-Fivebreakersareindependentlytimedcontrolled.(Defaultisclosed).-Independentbreakerpoletrippingispossible.CASE7：联络变压器CaseDescription:-TwoThevinenImpedancesourcesconnectedviaaD-Ytransformer.-Systemvoltageis230kV/25kVsettableviasourceequivalents.-Simulatestwosystemswithafeederload.-Fourfaultpositionsforfullfaultcontrolaheadandbehindstationrelays.-Threebreakersareindependentlytimedcontrolled.(Defaultisclosed).-Independentbreakerpoletrippingispossible.CASE8：三绕组变压器CaseDescription:-TwoThevinenImpedancesourcesconnectedviaaY-D-Ytransformer.-Faultscanbeappliedtothe10kVDeltatertiarywinding-Systemvoltageis230kV/25kVsettableviasourceequivalents.-Simulatestwosystemswithafeederload.-Fivefaultpositionsforfullfaultcontrolaheadandbehindstationrelays.-Fivebreakersareindependentlytimedcontrolled.(Defaultisclosed).-Independentbreakerpoletrippingispossible.CASE9：与SEL321Relay相关的模型ThisexamplesystemistakenfromtheSEL321RelayInstructionManual,Chapter5.ThetransmissionlinemodelsarebasedoninputtingR,X,andBdatamanually.Linedataisenteredpermeter;therefore,thelengthsofthedifferentlinesectionsareadjustedsimplybychangingthelinelength.四、（次同步机）SubSyncRes文件夹中内容IEEEFIRSTBENCHMARKCASEFORSUB-SYNCHRONOUSRESONANCESTUDIESExampleCaseCharacteristics:-FieldVoltageofSynchronousmachineheldatthesamevalue-Mech.TorqueofSynchronousmachineheldattheinitialvalue-Multimassenabledattime=1.4sec.TheinputMactivallowsthemultimasstobeenabledonlywhenthemachineisactive.ThemultimassisinitializedwithsmoothedvalueofelectricaltorqueTestdyfromthemachinemodel.Reference:IEEETransactionsonPowerApparatusandSystem,Vol.96,No.5,October1977,pp.1565-1572.五、（WINDFarm文件夹）风力发电机（异步机）Thiscaseshowsainductiongeneratorbeingdrivenbyawindturbine.Theturbineiscontroledbyawindgovernor.The'windsource'isusedtomodelwindspeedfluctuations.学习心得（2012-2-21）：这个风机由三个部分组成：一是风机（相当于发电厂是的汽轮机），二是调速器（相当于汽轮机的气门控制装置，三是发电机（实际上是鼠笼电动机）。1、风机的设置上述参数中，Vw是风速，属于外部输入参数，模型前面的就有风速的调节模块，本例中风速一定。W是电机的机械速度。这个W的单位是（rad/s）因此，在“模拟风机的机械速度”处，w是电动机的输出速度。OutputSpeed是一个标么值，将其乘以2*PI*f再除以极对数。变所W。还有一个输入就是Beta，就是pitchangle桨距角（可能叫法不对），我的理解是风机叶片的角度，相当于船的桨的吃水角度。输出Tm给电机，输出P看看的。以上调整风机的叶片长度、空气密度、齿轮箱效率等等参数。2、调速器的设置PitchControl就是节距控制。下图中的1.44是风机的要求功率（ref为参照的意思）。Wref为电角速度。对应于50Hz。下图为比例积分调节，属于控制参数。下图为速度阻尼参数，属于控制参数。下图比较重要，是桨距角的调整。3、鼠笼电机的设置见电动机的控制W，S，T。:记住：Aswitchtoselectspeedcontrolmode(1)ortorquecontrolmode(0).本例中，在1s时，