pscad学习包笔记pnents插值兼容性被广泛应用在多种控制系统建模组件中这种处理保

InterpolationCompatibleInterpolationcompatibilityhasbeenaddedtoavarietyoftheControlSystemModelingFunction(CSMF)components.Thiscompatibilityensuresthatfullyinterpolatedcontrolsystemsmaybeconstructedfromsomeofthebasicfunctionblocks.Duetothefullusageofinterpolation,thecontrolsystemestimestepindependent(withinreason),andsoProjectsmayberunatlargertimestepswithoutcompromisingaccuracy.的控制系统在仿真步长的处理上独立（withinreason）,即建立的工程可以使Ifinterpolationcompatibilityisenabled,thecomponentswillexpectatwo-elementarraysignalstandard,where:Signal=(Magnitude,InterpolatedTimeTag)=（幅值，插值时间标记TheMagnitudeelementinthisarrayrepresentstheactualcontrolsignal,whichbehavesasitwouldifitwereundernormalconditions.TheInterpolatedTimeTagrepresentstheexacttimeinsecondsatwhichastatetransitionoccurs,inrelationtothefixedtimestepgrid.Thiselementwillbenormally0.0,unlessofcourseastatetransitionoccursduringaparticulartimestepinterval.0.0，除非对应的状态转变发生在特定的时间步长中间。Aninterpolatedtimeisnormallygeneratedwhenacrossingoftwoormorecontrolsignalsoccurs.Oneofthesignalswillactasareference(canbeaconstant),whiletheothersignalismonitoredtodetectwhenitsvalueeslargerorsmallerthanthereference.（可以是恒定值），DuetothefixedtimestepnatureofEMTDC,anycrossingofsignalswillmostlikelyoccurbetweentimesteps.Althoughthereareafewdifferenttypesofinterpolationalgorithm(i.e.linear,quadratic,etc.),EMTDCuseslinearinterpolation,asitisthemostefficientandpracticalmethodintheareaofelectromagnetictransientsimulation[seeEMTDCReference6,8,3435].LinearinterpolationcapabilitiesinEMTDChavebeenshowntoenhancethesolutionaccuracydramatically（显著地）,withminimalcomplexityincomputation[seeEMTDCReference6,8].ETMTDC6,8,34,35]。EMTDCETMTDC6,8]。Acommonscenario,whereadatasignalfunctionf(t)intersectsareferencevalue(zerointhiscase)betweentimesteps,isshownAssumingalinearsegmentbetweentimestepst=x–xandt=x,theexacttimeatwhichthefunctionf(t)crosseszerowouldbeat=x–x.Referringtotheabovefigure,theinterpolatedtimecanthenbecalculatedusingasimplelinearratioastx∆xtxf(t)和参考txδxδx可以用下Ofcourse,thereferencesignalmaybeavalueotherthanzero,orpossiblyevenadynamicfunctionitself. Inthelattercase,adifferencefunctionsuchas:couldbeusedforcomparisonwithaconstant,zeroThepropagation()ofanInterpolatedTimeTagxthroughacontrolsystemwillnormallyoccurwithinasingletimestep.Dependingontheindividualcontrolfunctionspresent,xmaybepassedthroughthesystemunaltered,oritmaybemodifiedorevenignored.Indeed,theremaybeseveraldistinctinterpolatedtimespropagatingalongvariouscontrolsignalpathseachtimestep–andthesetiescouldpossiblyinctwithoneanother.插值时间标记x在一个控制系统中完成传递通常需要一个时间步长。根据目前的个别的子控制功能模块不同，x可能从原来的模块中传递过来，也可能被修正或者被忽略。实际上，可能存在若干