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Thesis - Short-term and long-term reliability studies in the

Thesis - Short-term and long-term reliability studies in the

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时间：2019-07-03

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1、SHORT-TERMANDLONG-TERMRELIABILITYSTUDIESINDEREGULATEDPOWERSYSTEMSADissertationbyYISHANLISubmittedtotheOfficeofGraduateStudiesofTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYDecember2005MajorSubject:ElectricalEn

2、gineeringSHORT-TERMANDLONG-TERMRELIABILITYSTUDIESINDEREGULATEDPOWERSYSTEMSADissertationbyYISHANLISubmittedtotheOfficeofGraduateStudiesofTexasA&MUniversityinpartialfulfillmentoftherequirementsforthedegreeofDOCTOROFPHILOSOPHYApprovedby:ChairofCommittee,

3、GarngM.HuangCommitteeMembers,ChananSinghAniruddhaDattaVivekSarinHeadofDepartment,ChananSinghDecember2005MajorSubject:ElectricalEngineeringiiiABSTRACTShort-termandLong-termReliabilityStudiesinDeregulatedPowerSystems.(December2005)YishanLi,B.S.,Shanghai

4、JiaoTongUniversity;M.S.,ShanghaiJiaoTongUniversityChairofAdvisoryCommittee:Dr.GarngM.HuangTheelectricpowerindustryisundergoingarestructuringprocess.Themajorgoalsofthechangeoftheindustrystructurearetomotivatecompetition,reducecostsandimprovetheserviceq

5、ualityforconsumers.Inthemeantime,itisalsoimportantforthenewstructuretomaintainsystemreliability.Powersystemreliabilityiscomprisedoftwobasiccomponents,adequacyandsecurity.Intermsofthetimeframe,powersystemreliabilitycanmeanshort-termreliabilityorlong-te

6、rmreliability.Short-termreliabilityismoreasecurityissuewhilelong-termreliabilityfocusesmoreontheissueofadequacy.Thisdissertationpresentstechniquestoaddresssomesecurityissuesassociatedwithshort-termreliabilityandsomeadequacyissuesrelatedtolong-termreli

7、abilityinderegulatedpowersystems.Short-termreliabilityisforoperationalpurposesandismainlyconcernedwithsecurity.Thusthewayenergyisdispatchedandtheactionsthesystemoperatortakestoremedyaninsecuresystemstatesuchastransmissioncongestionareimportanttoshort-

8、termreliability.Ourstudiesonshort-termreliabilityarethereforefocusedonthesetwoaspects.Wefirstinvestigatetheformulationoftheauction-baseddispatchbythelawofsupplyanddemand.Thenwedevelopefficientalgorithmstosolvetheauction-baseddispatchwithdiffer

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