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《Thesis - Power system fault analysis based on intelligent te》由會員上傳分享，免費在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、POWERSYSTEMFAULTANALYSISBASEDONINTELLIGENTTECHNIQUESANDINTELLIGENTELECTRONICDEVICEDATAADissertationbyXULUOSubmittedtotheO±ceofGraduateStudiesofTexasA&MUniversityinpartialfulˉllmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYMay2007MajorSubject:ElectricalEngineeringPOWERSY
2、STEMFAULTANALYSISBASEDONINTELLIGENTTECHNIQUESANDINTELLIGENTELECTRONICDEVICEDATAADissertationbyXULUOSubmittedtotheO±ceofGraduateStudiesofTexasA&MUniversityinpartialfulˉllmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYApprovedby:ChairofCommittee,MladenKezunovicCommitteeMem
3、bers,ChananSinghEdgarSanchez-SinencioWilliamLivelyHeadofDepartment,CostasN.GeorghiadesMay2007MajorSubject:ElectricalEngineeringiiiABSTRACTPowerSystemFaultAnalysisBasedonIntelligentTechniquesandIntelligentElectronicDeviceData.(May2007)XuLuo,B.S.,Xi'anJiaotongUniversity;M.S.,Xi'
4、anJiaotongUniversityChairofAdvisoryCommittee:Dr.MladenKezunovicThisdissertationhasfocusedonautomatedpowersystemfaultanalysis.Newcontributionstofaultsectionestimation,protectionsystemperformanceevaluationandpowersystem/protectionsysteminteractivesimulationhavebeenachieved.In-te
5、lligenttechniquesincludingexpertsystems,fuzzylogicandPetri-nets,aswellasdatafromremoteterminalunits(RTUs)ofsupervisorycontrolanddataacquisition(SCADA)systems,anddigitalprotectiverelayshavebeenexploredandutilizedtofuˉlltheobjectives.Thetaskoffaultsectionestimationisdi±cultwhenm
6、ultiplefaults,failuresofprotectiondevices,andfalsedataareinvolved.AFuzzyReasoningPetri-netsapproachhasbeenproposedtotacklethecomplexities.Inthisapproach,thefuzzyreasoningstartingfromprotectionsystemstatusdataandendingwithestimationoffaultedpowersystemsectionisformulatedbyPetri
7、-nets.Thereasoningprocessisimplementedbymatrixoperations.DatafromRTUsofSCADAsystemsanddigitalprotectiverelaysareusedasinputs.Experientialtestshaveshownthattheproposedapproachisabletoperformaccuratefaultsectionestimationundercomplexscenarios.Theevaluationofprotectionsystemperfo
8、rmanceinvolvesissuesofdataacqui-sition,predictionofexpectedop
