PSCAD例子的学习对部分example的解释.docx
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PSCAD例子的学习对部分example的解释
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-pulseconverterload
REFERENCE:
H.FujitaandH.Akagi,
'APracticalApproachtoHarmonicCompensation
inPowerSystems-SeriesConnectionofPassive
andActiveFilters',IEEETrans.onInd.Applications,
vol.27,No.6,Nov/Dec1991,pp.1020-1025
RevisedbyJ.E.Nordstrom-September2000
软件的英文说明。
ThisapplicationexampleisbasedonacaseorigionallycreatedatManitobaHydro,inManitobaCanada.
Theproblemwasthatfarmanimals,duringwintermonths,wereexperiencinga"tinglevoltage",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:
-TwoThevinenImpedancesourcesconnectedvia
transmissionlinesandaT-tap.
-Onetransmissionlineterminatedwithatransformer
ofconfigurablesizeandtype.
-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
-TwoThevinenImpedancesourcesconnectedvia
transmissionlinesandaT-tap.
-Onetransmissionlineterminatedwithatransformer
ofconfigurablesizeandtype.
-Systemvoltageis230kVsettableviasourceequivalents.
-Simulatesthreesubstationsconnectedviafourtransmissionlines.
-Ninefaultpositionsforfullfaultcontrolaheadandbehindstationrelays.
-FaultscanbeplacedMidlineonLine1,Line2andLine3
-UsermusttakeCaretoensurethesumofthesections,T1throughT6sum
tothelengthofthelinestheyaresimulating.
-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,thelengthsofthedifferent
linesectionsareadjustedsimplybychangingthelinelength.
四、(次同步机)SubSyncRes文件夹中内容
IEEEFIRSTBENCHMARKCASEFORSUB-SYNCHRONOUSRESONANCESTUDIES
ExampleCaseCharacteristics:
-FieldVoltageofSynchronousmachineheldatthesamevalue
-Mech.TorqueofSynchronousmachineheldattheinitialvalue
-Multimassenabledattime=1.4sec.Theinput"Mactiv"allowsthemultimasstobeenabledonlywhenthemachineisacti