改進的暫態(tài)穩(wěn)定雙向模塊簡化仿真算法.pdf

1、天津大學碩士學位論文改進的暫態(tài)穩(wěn)定雙向模塊簡化仿真算法姓名：李傳棟申請學位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導教師：房大中20050101A懿S重＆簟CTThetimedomaintrajectorysimulationisoneofthenecessarytoolstostudythepowersystembehaviorThesimulationprovidesdamforman)systemsecurityanalysesWit

2、htheenlargementinsystemscaleandcapacityandtheapplicationofnewfacilities，thepowersystembecomesmuchmorecomplextoanalyzeThustheprogrammingofthedigitalsimulationinpowersystemengineeringhasbecomeinorechallengingtOO：notonlyina

3、ccuracybutalsoinspeedInadditionitshoatdbeconvenienttoaddmodelsofnewequipmentstosimulationprogrmnsThemainworkofthethesisaims越improvingthetransientsimulationalgorithmtomeettheserequirementsFirst，thegeneralprocedureofthesys

4、temsimulationispresented，followedbythemathematicmodelsofvariouscomponentsandtheirdifferentialequationsaccordingtothetrapezoidalruleThebasicideaoftheNewtonmethodisdiscussedinwhichtherepetitivereformandLUdecompositionofJac

5、obianmatriximposeaheavycomputationalburdenThisisthebottlenecktoenhancethespeedoftransientsimulation。inChapter3，atechniqueofBidirectionalModaleReduction(BMR)lSintroducedBymeansoftheBMRtechnique，thesimulationprogrammingbas

6、edonNewtoniterationhasbeenmodularizedandeasiertobeexpanded，withquickconvergence，highprecisionandgoodnumericalstabilityEquationsofpowergridandgeneratorswiththeirauxiliarycontrollersarederivedforcodeprogramnamedforwardredu

7、ctionandbackwardsubstitutionmethodToimprovetheefficiencyofsystemsimulation，certaininherentattributesinJacobJanmatricesofelectricnetworkand囂neratormodulesaleutilized。Thisbuildsthebasisofpartialmatrixdecompositiontechnique

8、inChapter4Duringiterations，thedecompositionoftheJacobianmatrixwillbeRstrictedWithinasmallsubmatrix。butretainthesameresultofdecompositionforfullJaeobianmatrixThecompmationalburdenofLUdecompositionisthusgreatlyreduced，whil

9、ethefastconvergenceofNewtoniterationwillremainFinallyasimulationprogramusingthenewtechniquesisdevelopedCasestudiesusingtheprogramarecarriedoutOnthreerealisticelectricnetworksinChin8～ieMengxiShanxiandNortheastsystemsSwing