Thesis - Reliability Evaluation of Composite Power Systems I

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1、RELIABILITYEVALUATIONOFCOMPOSITEPOWERSYSTEMSINCLUDINGTHEEFFECTSOFHURRICANESADissertationbyYONGLIUSubmittedtotheOfficeofGraduateStudiesofTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYDecemberof2010MajorSubject:ElectricalEngineeringReliabilityEvaluati

2、onofCompositePowerSystemsIncludingtheEffectsofHurricanesCopyright2010YongLiuRELIABILITYEVALUATIONOFCOMPOSITEPOWERSYSTEMSINCLUDINGTHEEFFECTSOFHURRICANESADissertationbyYONGLIUSubmittedtotheOfficeofGraduateStudiesofTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofDOCTOROFP

3、HILOSOPHYApprovedby:ChairofCommittee,ChananSinghCommitteeMembers,GarngM.HuangAlexSprintsonNatarajanGautamHeadofDepartment,CostasN.GeorghiadesDecember2010MajorSubject:ElectricalEngineeringiiiABSTRACTReliabilityEvaluationofCompositePowerSystemsIncludingtheEffectsofHurricanes.(December2010)Yo

4、ngLiu,B.E.,HuazhongUniversityofScienceandTechnology;M.E.,NanyangTechnologicalUniversityChairofAdvisoryCommittee:Dr.ChananSinghAdverseweathersuchashurricanescansignificantlyaffectthereliabilityofcompositepowersystems.Predictingtheimpactofhurricanescanhelputilitiesforbetterpreparednessandmak

5、eappropriaterestorationarrangements.Inthisdissertation,theimpactofhurricanesonthereliabilityofcompositepowersystemsisinvestigated.Firstly,theimpactofadverseweatheronthelong-termreliabilityofcompositepowersystemsisinvestigatedbyusingMarkovcut-setmethod.TheAlgorithmsfortheimplementationisdev

6、eloped.Here,two-stateweathermodelisused.Analgorithmforsequentialsimulationisalsodevelopedtoachievethesamegoal.Theresultsobtainedbyusingthetwomethodsarecompared.Thecomparisonshowsthattheanalyticalmethodcanobtaincomparableresultsandmeantimeitcanbefasterthanthesimulationmethod.Secondly,theimp

7、actofhurricanesontheshort-termreliabilityofcompositepowersystemsisinvestigated.Afuzzyinferencesystemisusedtoassessthefailurerateincrementofsystemcomponents.Here,differentmethodsareusedtobuildtwotypesoffuzzyinferencesystems.Consideringthefactthathurricanesusual