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1、EuropeanTransactionsonElectricalPowerStudyonApplicationofFluxLinkageofSynchronousGeneratorforLossofExcitationDetectionForPeerReviewJournal:EuropeanTransactionsonElectricalPowerManuscriptID:ETEP-11-0127.R1Wiley-Manuscripttype:ResearchArticleDateSubmittedbyth
2、e27-Aug-2011Author:CompleteListofAuthors:yaghobi,hamid;FerdowsiUniversityofMashhad,DepartmentofElectricalEngineeringmortazavi,hashem;KhorasanregionalElectricCompanyKhorashadizadeh,Hassan;SiemensEnergyIncAnsari,Kourosh;FerdowsiUniversityofMashhad,,Department
3、ofElectricalEngineeringRajabiMashhadi,Habib;FerdowsiUniversityofMashhad,,DepartmentofElectricalEngineeringBorzoe,Hossein;KhorasanregionalElectricCompanyKeywords:Synchronousgenerator,lossofexcitationprotection,linkagefluxJohnWiley&SonsPage1of16EuropeanTransa
4、ctionsonElectricalPower12StudyonApplicationofFluxLinkageofSynchronous34GeneratorforLossofExcitationDetection567H.Yaghobi,H.Mortazavi,K.Ansari,H.RajabiMashhadi,H.Khorashadizadeh,andH.Borzoe891011AbstractThiscontributiondealswiththeanalysisofsynchronousgenera
5、torLossofExcitation(LOE)12protection.ThispaperpresentsanewmethodfordetectingLOEinsynchronousgeneratorbasedonthe13variationofthemagneticfluxlinkageintheairgap.Toshowtheeffectivenessoftheproposed14protection,comparisonsaremadewiththeconventionalLOEprotectionm
6、ethodsbyconsidering15differentgeneratorssizes.Thesimulationresultsshowthattheproposedmethodisusefulandeffective1617todetectLOEconditions.Themainadvantageofthismethodisitsspeedandsensitivity.18ForPeerReview19KeywordsSynchronousgenerator,lossofexcitationprote
7、ction,linkageflux,searchcoil.2021I.INTRODUCTION2223Synchronousgeneratorsaretheuniversalmachinesofchoiceforthegenerationofelectricpower.24SynchronousgeneratorsarenotdesignedtobeoperatedwithoutDCexcitation.Unlikeinduction25machines,therotatingfieldsarenotcapa
8、bleofcontinuouslyhandlingthecirculatingcurrentsthatcan2627flowintherotorforging,wedges,amortisseurwindings,andretainingringsduringlossoffield28operation.Consequentlylossofexcitationrelaysarenormallyinc