PSCAD例子的学习对部分example的解释.docx

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"allowsthemultimasstobeenabl