基于時域仿真的快速暫態(tài)穩(wěn)定定量分析.pdf

1、東南大學碩士學位論文基于時域仿真的快速暫態(tài)穩(wěn)定定量分析姓名：惠海龍申請學位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導教師：萬秋蘭2002.3.1爾南人乍頌l‘學化淪殳ABSTRACTABSTRACTTransientstabilityanalysis(TSA)isalwaysaveryimportantsubjectinpowersystemsecurityassessmentTimedomainsimulation(TDS)andthed

2、irectmethodaretwomainmethodsofpowersystemtransientstabilityanalysisTDShaswidemodeladaptabilityandisveryaccurate，SOitiswidelyusedanditsresultsareusuallyregardedasthecriterionButTDSisslowandcannotdeterminethestabilitymargi

3、nThedirectmethodisnotaccurateenough，butitisfastandcanquantifythestabilitymarginBasedontimedomainsimulation，thispaperpresentsafastandquantitativeTSAmethodwhichcombinesthedesirablefeaturesofthetwomethodsThispaperproposesaf

4、astcriterionwhichcanfastdeterminethemulti—machinepowersystemstabilityandendthenumericalintegrationBasedonthetrajectorydataproducedfromnumericalintegrationandtheconceptoftrajectorytransientenergyfunction，thispapersetsupat

5、ransientstabilityindexSliandaninstabilityindexUlitoquantifythesystemstabilityThefastTSAmethodcancalculatetheexactcriticalclearingtime(CCT)quicklythroughcalculatingthefaultlastingtrajectorytoavoidthenumericalintegrationbe

6、forefaultclearingtimeineverystepoftheprocessofiterationandapplyingthegoldenbisectionmethod(orthebisectionmethod)toreducethetimesofiterationTheproposedmethodissuccessfullyappliedtothetestsystemof6machinesand22busesforanum

7、beroffaultconditions，ThesimulationteNultsshowthattheproposedTSAmethodisfastandaccurateandthatthesetwoindexesarerafionalandeffectiveKeywords：TransientstabilityTimedomainsimulation，theDirectmethod，Trajectoryanalysismethod，