虛擬儀器電壓波動中英文對照外文翻譯文獻(xiàn)

中英文對照外文翻譯(文檔含英文原文和中文翻譯)DesignandSimulationofVoltageFluctuationRateMonitorSystemBasedonVirtualInstrumentTechnology

AbstractElectronicpoweristhemostwidelyusedenergy,anditsapplicationdegreehasbeenamarkofcountrydevelopmentlevel.Thispaperintroducesamethodofvoltagefluctuationratemonitorbyusingvirtualinstrumenttechnology.Becausevirtualinstrumenttechnologyusescomputerownhardwareanddesigngraphicsprocedureframediagramsoftwaretocomplete,whichhasmanyadvantagesofthesimplealgorithmandfastspeed,etc.Throughsimulatingthree-phasevoltageofelectronicpowersystem,thispapercompletesvoltagefluctuationratemonitorofelectronicpowersystemandelectronicpowerqualityjudgment,aswellasverifiesaccuracyofalgorithmdiagramprocedure.Keyword：virtualinstrumentation,voltagevariation，flicker一.IntroductionWiththedevelopmentofmicroelectronicandelectronicpowertechnologyandwidelyapplication,userhashigherdemandofelectronicpowerqualitylittlebylittle.Butbecauseofexistingofdisturbanceload,suchasnonlinear,impactorimbalanceelectronicload.Aswellasotherdisturbancesource,suchassystemshortcircuit,etc.whichcausingamountofelectronicpowerqualityproblem,andaffectingelectronicpowernetworkaswellasusers’equipmentsafe.Correctly,flickeristheimpressionofunsteadinessofvisualsensationinducedbyalightstimuluswhoseluminanceorspectraldistributionfluctuateswithtime.Forthisreason,theexpression“voltageflicker,”althoughverycommon,isactuallyincorrect.TheinternationalstandardizationeffortsoftheUIE(UnionInternationaled’Electrothermie)[1]andtheIEC(InternationalElectrotechnicalCommittee)ledtoaflickermeter[1],[2]thatsimulatestheprocessofphysiologicalvisualperceptionandgivesareliableindicationofthereactionofanobservertoanytypeofflicker,whichisindependentofthesourceofdisturbanceandwithreferencetoaconventional60-Wincandescencelampat230V.Alltypesofvoltagefluctuationsmaybeassessed[3]usingaflickermeterwhichcomplieswiththespecificationsgiveninIEC-EN60868.Electronicpowerqualityproblem’sproduction,notonlyrelatedtopowerplant,butalsoelectronicpowerusers.Suchasvoltagefluctuation,whichcausingbyuserdisturbance.Idealthree-phaseACpowersystemshouldbeakindofsinewavevoltageprovidingtoelectronicpoweruserinconstantfrequencyandstandardvoltage.Eachphasevoltagemagnitudeandelectroniccurrencymagnitudeisequalanddifferentofphaseis120o.Butbecauseofelectronicpowersystemhasgenerator,transformer,etcequipmentandsemiconductorrectifier,thyristorandfrequencyadjustingequipment,aswellasincludingnonlinearorhouseholdappliances,asymmetricloadintroduced,andso,idealstatedoesnotexist,whichproducingelectronicpowerqualityproblem.Powerelectronicqualitydecreasedwillmakeelectronicequipmentrunninginabnormal,producingequipmentdamage,andproductionrejectrateincreased.So,electronicpoweraffectnormalindustryproducingandelectronicnetworkrunning,whichcausinghugeeconomicdamage.Now,electronicpowerqualityproblemhascausedeachcountryelectronicpowerworkers’hightreatment.Improvingelectronicpowerqualitytechnologyhasbecomeelectronicpowersystemresearchfieldnewhot-pot.So,collectingandanalyzingoriginalmeasurementdataisveryimportant,whichhasveryimportantsignificanttowholeelectronicpowersystemelectronicpowerqualitymanagementandimprovement.二.SystemCompositionandPrincipleSystemusescomputerhardwareandsoftwaretodesign.SoftwaresystemusedvirtualinstrumentLabVIEWtodesign,virtualinstrumentisameasurementinstrument,whichrealizingmanymorefunctionthatothernormalinstrumentcannottorealization.Infact,virtualinstrumentadoptscomputer’sindicatortodisplayastraditionalinstrumentLEDorLCDdisplayer.Weusedatacollectionmodulehardwareequipment,andadoptsomeprocesscircuittocompletecomputerstrongsoftwarefunction,suchasdataoperating,analyzing,andprocessing.Comparingwithtraditionalinstrumentandequipment,Softwareofvirtualinstrumenttechnologyusescomputer’sstrongsource,whichrealizinglowcostspendinmaximumdegree.So,virtualinstrumentisbymeansofcomputertechnology,ithasmoredifferentcomparingwithtraditionalinstrument,whichdifferentisshownasTableI.LabVIEWismostwidelyusevirtualinstrumentdevelopmentsoftware,whichispresentedbyAmericancompanyofNI.LabVIEW8.5includeslotsoffunctionmoduleandcompletelybusequipmentsdrivingprocedure.LabVIEW’scharacteraccordingtomethodofgraphics:LabVIEWadoptsframediagramratherthanthetraditionaltextprogrammode.Programmethodemphasizesactualprocessofthesignalprocess,programhassimplecharacter,andmodifyingisconvenient.VirtualinstrumentsoftwareofLabVIEWisamostspreadtoworldnowadays,whichcancompletesystemmonitorormeasurement.Indomesticandinternational,manydesignersindesigningmeasurementsystemorcontrolsystemareusingittocarryoutprogramdesigning,whichisthedevelopmenttendency.三．NewDigitalFlickermeterThisPC-baseddigitalflickermeterdesignisbasedontheforwardandinversefastFouriertransform(FFT),andonfilteringinthefrequencydomain,fortheimplementationoftheweightingfilterofblock3oftheIECfunctionaldiagram.Theotherfilteringandsquaringoperationsareperformedinthetimedomain.Thewholemeasurementprocedureisbasedonthefollowingsteps:1)samplingandconversiontodigitalvalueofinstantaneoussignalofthesupplysystemvoltage;2)squaringofconvertedsamplesanddigitalfilteringinthetimedomain;3)FFTexecutiontopasstothefrequencydomainandfilteringthroughmultiplicationbythecomplexcoefficientsofthesecondfilterofblock3;4)inverseFFTtoreturntothetimedomainandsquaringanddigitalfiltering.Inthisimplementationthefirstproblemisthedefinitionofthesamplingfrequencyandofthenumberoftheacquiredsamples.Lowsamplingfrequenciesand/ornumbersofsamplesdonotallowaccuratedeterminationofthemodulatingdisturbancesignal(envelopeoftheinstantaneousvoltage).Ontheotherhand,highsamplingfrequencywouldrequireahighnumberofacquiredsamplestodetectthechangesofvoltage,withincreaseoftheanalysistime.Anotherconditiontorealizeisthatthenumberofsamplesmustbe2toreachthemaximumanalysisspeedoftheFFTalgorithm.Theinstrument,infact,mustworkinreal-timeperformingallthereadingoperationsoftheacquireddataandthenecessaryanalysiswithinthedurationofacycleofacquisitionwithoutlosinganyintervalofthenetworkvoltage.OtherproblemstoconsiderconcernthetransientsarisinginToanalyzeandresolvetheaforesaidproblems,theproposedimplementationhasbeensimulatedwithLabViewsoftware.Numeroustestshavebeenperformedsimulatingsinusoidalsignalsatnetworkfrequencywithvariouswaveformsmodulatingdisturbancesassinusoidal,rectangular,pulsetrains,andintransient,varyingthesamplingfrequency,thenumberofthesamples,thefrequencyofthenetworkvoltagesignal,thefrequencyandthetimeofthedisturbance.Toavoidaliasingproblemsinthesimulations,ananti-aliasingfilterhasbeenintroducedtolimitthebandofthesignalstohalfofthesamplingfrequency.Resultsbasedonsimulationsindicatethattheproposedapproachalwaysyieldsaccuratemeasurementsofflickerforalmost4096pointsat512-Hzsamplingfrequency,usinga12-bitA/Dconversion.Thisismainlytrueinthesecondhalfoftheindicateddata.四.MonitorPrincipleVoltagefluctuationisakindoftimelychanginginaseriesofvoltagechangingorworkfrequencyvoltagewaveline,whichcausingbyimpactcharacterpowerload,suchasactivepowerandreactiveactivepower’sgreatlychangingoffurnace,rollingmill,electriclocomotive,arcwelding,etcrunning.Itsessenceisactvoltagefluctuationsub-componentasamplitudemodulationwave,andmodulatevoltage’ssquaremeanvalue(orpeakvalue).Voltagefluctuationisactenvelopeofvoltage’ssquaremeanvalueorpeakvalueastimefunctionwave.Whenanalyzing,weactworkfrequencyvoltageuascarrywave,andmakefluctuationvoltageasamplitudewave,whichisshownasFig.1.（a）voltageofelectronicnetworku(t)(b)voltageofamplitudewavev(t)Fig.1Fluctuationvoltagevmodulatetoworkfrequencyvoltage.InFigure1.(a),uiselectronicnetworkfrequency50Hzinstantaneousvoltage,actingascarrywave,issinefluctuationvoltage.vis10Hzsineamplitudewave,whenusingittomodulate50Hzworkfrequencycarrywavevoltageu’speakvalue.InFigure1.(b),vmissineamplitudewavemaximumvalueorpeakvalue,disvpeak-valleydifferentvalue(p-pvalue).VisvsquaremeanvalueinitsperiodT,andexpressinUN’spercentage.Normally,voltagefluctuationmeasurementadoptsasstyleasbelow:measuringeachperiodwaveeffectvalueinafixedperiod,thencompareits,usemaximumvaluedifferentU'(Umax-Umin)plusstandardvoltageUN,itspercentageexpressesrelativevalue,whichisvoltagefluctuationrate.五.SystemSoftwareDesignAccordingtoformula(1),wecarryouteachphasevoltagefluctuationmonitorandfluctuationratemonitor.Amongthem,Aphasevoltagesimulationsignaladdingpulsefluctuationsub-component,voltagefluctuationmonitorprocedureframediagramisshownasFig.2.Fig.2Voltagefluctuationmonitorprocesureframediagram.TocalculatevoltageeffectvaluepeakvalueUmaxandUmin,procedureusesforcirclestructure,procedureuses(arraysizefunction)toreturnarray’selementsnumber,andjudgescircletimesN.CircletimesNisinputvoltagesamplingperiodnumbersn.ncangetinworkfrequencyvoltage’speriod0.02s(50Hz)plussamplingperiod(samplingfrequencyis10000Hz,samplingperiodis0.0001s).So,weobtaineveryperiodhas0.02/0.0001=2000numbersamplingpots.Wecanuseinputarraysizeofsimulationsignalsamplingpointnumber30000plus2000,whichisn=150numbersperiod.Wemakeinputvoltageeverysamplingperiodusingarraysub-collectionfunctioncalculate150numberperiodelementsbyusingmeansquarefunction.Andusearrayinsertfunctiontogetnewarray,whichadoptingarraymaximumandarrayminimumfunctiontocalculatemaximumvalueandminimumvalue,andthenusingmathematicsfunctiontocomparereferencevoltageeffectvalue220V,whichcompletingvoltagefluctuationratecalculation.六.ExperimentandConclusionInordertomakeeachphasevoltagesimulationdataapproximatetofactelectronicnetworkdata,so,leteachphasebasicwavevaluedifferent,andallhavewhitenoisedisturbancesignal,anditsstandarddeviationvalueis10.Inaddition,Aphasevoltageaddsareversepulsefluctuationsignalp.AndbyusingofLabVIEWtoproducingAphasevoltagesimulationdataproducingprocedureframediagramisshownasFig.3.Fig.3Aphasevoltagesimulationdataproducingfrontpanel.Otherphasevoltageproducingmethodissameasuponmethod.RunningfrontpanelofvoltageflucationratemonitorisshownasFig.4.Noalarmingconditionofvoltagefluctuation(b)AlarmingconditionofvoltagefluctuationFig.4Voltagefluctuationmonitorfrontpanel.Voltagefluctuationmonitorresultisshownasfrontpaneldisplaycontrolfile,Aphasevoltagefluctuationrateis1.03%,accordingtostandard<Voltagefluctuationandflicker>(GB-12326-2000),below10kV,itisnotmorethan2.5%,soAphasefluctuationdoesnotbeyondalarminglimitvalue,Aphasealarminggreenlampislight.WhenwedefineAphasesimulationfluctuationdelaywidth10,whichfluctuationratemonitorvalueis3.27%,alarminglampbecomered.BandCphasesimulationwavedoesnotaddfluctuationsignal.So,fluctuationrateis0,whichisconsisttosuggestion,andprovingprocedureframediagram’saccuracy.References[1]UIEWGDisturbances,“Flickermeasurementandevaluation,”Tech.Rep.,2002.[2]Flickermeter—FunctionalandDesignSpecifications,IEC-EN60868,2007[3]ElectromagneticCompatibility(EMC)—Part3:Limits—Section3:LimitationofVoltageFluctuationsandFlickerinLow-VoltageSupplySystems,IEC-EN61000-3-3,2005[4]G.Neri,G.D.Cain,T.Salmon,andA.Yardim,“Amicroprocessorbaseddigitalflickermeter,”IEEETrans.Intrum.Meas,vol.40,pp.1008–1013,Dec.2006.[5]K.Srinivasan,“Digitalmeasurementofvoltageflicker,”IEEETrans.PowerDelivery,vol.6,pp.1593–1598,Oct.2010[6]I.KamwaandK.Srinivasan,“AKalmanfilter-basedtechniqueforcombineddigitalestimationofvoltageflickerandphasorinpowerdistributionsystems,”ETEP,vol.3,no.2,pp.131–142,Mar./Apr.2009[7]M.T.Chen,“Digitalalgorithmsformeasurementofvoltageflicker,”Proc.Inst.Elec.Eng.Gen.Transm.Distrib.,vol.144,no.2,pp.175–180,Mar.2008[8]S.Nuccio,“Adigitalinstrumentformeasurementofvoltageflicker,”inProc.IEEEIMTC,Ottawa,May2007,pp.281–284.[9]S.Caldara,S.Nuccio,andC.Spataro,“Avirtualinstrumentforthemeasurementofvoltageflickerinpowerdistributionsystems,”inProc.IMEKOInt.Symp.ElectricalInstrumentsinIndustry,Glasgow,Sept.2009,pp.153–156.[10]Flickermeter,Part0:EvaluationofFlickerSeverity,IEC-EN60868-0,2010[11]ElectromagneticCompatibility(EMC)—Part4:TestingandMeasurementTechniques—Section15:Flickermeter—FunctionalandDesignSpecification,IEC61000-4-15,2010電壓波動率監(jiān)控的設(shè)計和模擬基于虛擬儀器技術(shù)的系統(tǒng)摘要電能是最廣泛使用的能源，其應(yīng)用程度是一個國家發(fā)展水平的標(biāo)志。本文介紹了電壓波動率的方法監(jiān)測及如何利用虛擬儀器技術(shù)，虛擬儀器技術(shù)使用計算機(jī)的硬件和軟件設(shè)計的圖形程序需用框架圖完成,有許多優(yōu)點(diǎn)的簡單算法速度快,可以模擬電子電力系統(tǒng)三相電壓,本文完成了電壓波動率監(jiān)控電子電力系統(tǒng)和電子電能質(zhì)量的判斷,以及驗(yàn)證算法圖過程的準(zhǔn)確性。關(guān)鍵字：虛擬儀器，電壓變化，閃變一．介紹隨著微電子和電子電力技術(shù)的發(fā)展和廣泛應(yīng)用,用戶對電能質(zhì)量的有更高需求。但由于現(xiàn)有的負(fù)載擾動,如非線性、或不平衡電子負(fù)載的影響，以及其他干擾來源,如系統(tǒng)短路等，造成大量的電能質(zhì)量問題,影響電子電力網(wǎng)絡(luò)以及用戶的設(shè)備安全。生產(chǎn)電能其質(zhì)量問題,不僅與電廠,電力用戶有關(guān)，還受電壓波動等引起的用戶干擾。理想的三相交流電力系統(tǒng)應(yīng)該是一種正弦波電壓，向電力用戶提供恒定頻率和標(biāo)準(zhǔn)電壓。每個階段電壓級和電能質(zhì)量級相同和不同的階段是120o。但由于電能電力系統(tǒng)發(fā)電機(jī),變壓器等設(shè)備和半導(dǎo)體整流器,晶閘管和頻率調(diào)整設(shè)備,以及包括非線性或家用電器,不對稱負(fù)載。因此,理想狀態(tài)不存在,生產(chǎn)電能存在質(zhì)量問題。電力電能質(zhì)量下降將使電子設(shè)備運(yùn)行異常,生產(chǎn)設(shè)備損壞,和生產(chǎn)廢品率增加。因此,電力行業(yè)影響正常生產(chǎn)和電子網(wǎng)絡(luò)運(yùn)行,造成巨大的經(jīng)濟(jì)損失。顯而易見的，閃變是由于人的視覺感覺因?yàn)榱炼然蛘吖庾V隨時間變化而造成的輕微刺激，所產(chǎn)生的印象。基于原因，盡管“電壓閃變”使用的非常普遍，事實(shí)上這么表達(dá)是不正確的。國際電子聯(lián)盟(UIE)和國際電工委員會(IEC)共同致力于標(biāo)準(zhǔn)化的發(fā)展方向，模仿人的視覺功能并給出了觀察者對任何一個由獨(dú)立的光源、擾動的60W-230V白熾燈泡的閃變的反應(yīng)，得到了令人信服的結(jié)果。所有類型的可能會用閃變器監(jiān)測的電壓變化，詳細(xì)的說明書在IEC-EN60868.現(xiàn)在,電力電能質(zhì)量問題引起了各國電力工人的高待遇。提高電力電能質(zhì)量技術(shù)已成為電力系統(tǒng)研究領(lǐng)域新的焦點(diǎn)。因此,收集和分析原始測量數(shù)據(jù)是非常重要的,具有非常重要的意義，有利于整體電力系統(tǒng)和電能質(zhì)量管理和改進(jìn)。二．系統(tǒng)的組成及原理系統(tǒng)利用計算機(jī)硬件和軟件設(shè)計。虛擬儀器軟件系統(tǒng)使用虛擬儀器設(shè)計、虛擬儀器測量儀,實(shí)現(xiàn)更多的功能,其他正常的儀器不能實(shí)現(xiàn)。事實(shí)上,虛擬儀器和傳統(tǒng)儀器采用計算機(jī)的指示器顯示領(lǐng)導(dǎo)或液晶顯示。我們使用數(shù)據(jù)采集模塊的硬件設(shè)備,并采取一些特殊過程電路完成計算機(jī)軟件功能,如數(shù)據(jù)操作、分析和處理。與傳統(tǒng)儀器和設(shè)備,軟件的虛擬儀器技術(shù)相比利用計算機(jī)強(qiáng)大的功能,在最大程度上實(shí)現(xiàn)低成本的花費(fèi)。所以,虛擬儀器是通過計算機(jī)技術(shù),它有更多的不同優(yōu)點(diǎn)與傳統(tǒng)的儀器相比,虛擬儀器是使用最廣泛的虛擬儀器開發(fā)軟件,由美國公司提出。LabVIEW完全包括很多功能模塊和總線設(shè)備驅(qū)動程序。虛擬儀器的角色根據(jù)圖形的方法:虛擬儀器采用框架圖,而不是傳統(tǒng)的文本程序模式。程序方法強(qiáng)調(diào)信號處理的實(shí)際過程,程序有簡單的特性,且修改方便。虛擬儀器軟件的虛擬儀器是世界最發(fā)展到如今,從而完成系統(tǒng)監(jiān)控或測量。在國內(nèi)外,許多設(shè)計師在設(shè)計測量系統(tǒng)或控制系統(tǒng)用它來進(jìn)行程序設(shè)計,這是發(fā)展趨勢。三．新型數(shù)字閃變器這種基于PC機(jī)的數(shù)字式閃變器的設(shè)計是以逆快速傅立葉變換(FFT)和頻率域上的濾波為基礎(chǔ)的，以完成國際電工委員會設(shè)計中功能模塊3所執(zhí)行的權(quán)重濾光片的功能。整個測量的程序是基于以下步驟進(jìn)行的：采樣并且把供電系統(tǒng)的瞬時電壓值轉(zhuǎn)換為數(shù)字信號；在時間域內(nèi)進(jìn)行已轉(zhuǎn)換樣本的計算以及數(shù)字濾波FFT執(zhí)行以轉(zhuǎn)換為頻率域并且通過第二個濾波器模塊3中的復(fù)雜系數(shù)用乘法運(yùn)算進(jìn)行濾波；逆FFT的執(zhí)行使得信號返回時域并進(jìn)行數(shù)字濾波在具體之星上的第一個問題是對采樣頻率和所需樣本數(shù)的定義。低頻率采樣和/或樣本數(shù)不允許進(jìn)行精確的擾動信號調(diào)制(包括瞬時電壓)。另外一個方面，高采樣頻率將需要大量的采樣樣本以監(jiān)測電壓的變化，同時也增加了分析的時間。 另一個條件實(shí)現(xiàn)的是樣本數(shù)目必須有2個以到達(dá)到的FFT算法最快速度分析。該儀器，事實(shí)上在實(shí)時可以讀取所需數(shù)據(jù)以及持續(xù)周期內(nèi)對不丟失任何時間間隔網(wǎng)絡(luò)電壓的數(shù)據(jù)分析下運(yùn)行。其它問題是要考慮在時間域內(nèi)的數(shù)字濾波變換瞬變問題。 為了分析和解決上述問題，建議進(jìn)行基于LabView軟件的仿真模擬。無數(shù)實(shí)驗(yàn)都在模擬正弦信號最為輸入的網(wǎng)絡(luò)頻率中進(jìn)行，還有各種波形的擾動信號，比如正弦，矩形，脈沖陣列和瞬時變換，不同的采樣頻率、采樣樣本數(shù)，網(wǎng)絡(luò)電壓信號的頻率，干擾的頻率和時間。為了避免仿真中的這些問題，引進(jìn)了一個反-干擾濾波器，以限制信號的波段是采樣頻率的一半。四.監(jiān)控原理電壓波動是一種能及時改變的一系列電壓或改變工作頻率電壓波，及電力負(fù)荷造成的影響,如有功功率和無功功率大大改變爐、軋機(jī)、電力機(jī)車、電弧焊等運(yùn)行。它的本質(zhì)是電壓波動作為子組件調(diào)節(jié)調(diào)幅波,和調(diào)制電壓的平方平均值(或峰值)。電壓波動作為電壓的平方平均值和峰值隨著時間的波函數(shù)。分析時,我們的行為工作頻率電壓u波,使波動電壓振幅波,如圖1所示。電子網(wǎng)絡(luò)電壓u(t)（b）振幅波電壓u（t）圖1波動電壓v調(diào)節(jié)工作頻率電壓。如圖1所示，電子網(wǎng)絡(luò)頻率50hz電壓為220v，作為攜帶波,是正弦波動電壓。U是10hz正弦振幅波,當(dāng)用它來調(diào)節(jié)50hz正弦振幅波電壓u的峰值工作。如圖1所示,Um是正弦振幅波最大值或峰值,dU熱電不同的值。V的平方平均值在其周期T。通常情況下,電壓波動測量采用如下樣式:測量每個周期波效應(yīng)值在一個固定的時期,然后削減它,使用最大值不同你的(Umax-Umin)加上聯(lián)合國標(biāo)準(zhǔn)電壓,其百分比表達(dá)相對值,這是電壓波動率。五.系統(tǒng)軟件設(shè)計根據(jù)公式(1),我們每個階段進(jìn)行電壓波動監(jiān)測和波動率監(jiān)控。其中,相電壓模擬信號添加子組件脈沖波動,電壓波動監(jiān)測程序框架圖和圖2所示。圖2電壓波動檢測框架圖計算電壓值峰值影響你,程序使用循環(huán)結(jié)構(gòu),程序使用返回數(shù)組的元素數(shù)量,和圈次N.圈次是輸入電壓采樣周期數(shù)字N.N可以在工作頻率電壓的0.02秒(50hz)以及采樣周期(采樣頻率為10000hz,采樣周期是0.0001s)。所以,我們獲得每一個時期都有0.02/0.0001=2000采樣數(shù)率。我們可以使用輸入數(shù)組大小模擬信號的采樣點(diǎn)數(shù)目。我們輸入電壓使用數(shù)組函數(shù)計算每個采樣周期150個元素通過均方函數(shù)。使用新數(shù)組,數(shù)組插入功能,采用陣列最大和最小函數(shù)來計算數(shù)組最大值和最小值,然后使用數(shù)學(xué)函數(shù)比較參考價值220v電壓影響,完成電壓波動率計算。六．實(shí)驗(yàn)與結(jié)論為了使每個階段電壓仿真數(shù)據(jù)近似事實(shí)電子網(wǎng)絡(luò)