电压稳定控制研究和动态安全域程序开发

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1、ABSTRACTInrecentyears，somebigblackoutsoccurredinmanypowersystemsaroundtheworld,whichhavebroughttremendousdamag锶．Suchcatastrophiceventswfffeusuallycausedbypowersysteminstability．Findingmolefastandeffectivesecuritymonitoring,assessmClltandcontrolstrategiestoguaranteepowersystemstabitityandd?,onom

2、icoperatinghasbecomeahottopicoftheacademicandindustrialstudies．Inthisthesis，Wemainlyfocusonthestudyofpowersystemvoltagestabilityandonlinedynamicassessment．Worksofthisthesisc锄beseparatedintotwoparts：1、Part1isvoltagestabilitystudy．Wepresentallemergencyvoltagestabilitycontrolapproachbasedonpowerfl

3、owtracing．21Part2istodevelopallon-lineprogamtocalculatethesystemdynamicsecurityregionbasedoninterceptmethod．Asthefirstpart,Wepresent姐emergencyvoltagestabilitycontrolapproachbasedonpowerflowtracing．Inordertofindareasonablecontrolstrategy,Wemustsolvethefollowingtwoproblems．Thefirstistodetermineth

4、eoptimalcontrolquantity．e．辱themininmlloadsheddingandgenerationtripping．Thesecondistodeterminetheoptimalcontrollocation．Inourproposedapproach,wedeterminetheminimal10adsheddingandgenerationtrippingbyincreasingtheimpedanceofthefaultedtransmissionlines．And，thenabi-directionpowerflowtracingmethodisu

5、sedtolocatetheloadsheddingandgenerationtripping．Theapproachc锄reasonablelyconsidertheinfluenceofthenonlinearcomponentsexistinginpowersystems，suchasOLTCandhard—limitoftheexciter．Itcanalsoguaranteetheloadsheddingandthegenerationtrippingareminimal．Moreover,sincethepowerflowtracingisthebaseofthenoda

6、lpricingandlossallocationunderderegulationenvironment,ourproposedapproachc龇beeasilyappliedtopowermarketenv妇onment．Finally,$ometestingsystems．suchasNew—England10-generator-39-bussystemandIEEE118-bussystemareemployedtovalidatethepresentedcontrolapproach．Asthesecondpart,Wedevelopanon-lineprogamtoc

7、alculatethedynamicsecurityregion(abbr．IPDSR)accordingtotherequirementoftheproject‘'dynamicsecurityregionandprobabilisticsecuritya$sesSlTlentofH黜npowersystem'’．IPDSRisbasedonint盯c．eptmedaodpresentedbyTi觚jinUniversity．Asthebaseofthe