Thesis - Power system load modelling

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1、SchoolofInformationTechnologyandElectricalEngineeringPowerSystemLoadModellingByWenZingAdelineChanTheSchoolofInformationTechnologyandElectricalEngineeringTheUniversityofQueenslandSubmittedforthedegreeofBachelorofEngineering(Honours)indivisionofElectricalEngineeringOctober2003th29October2

2、003GraceCollegeWalcottStreetSt.LuciaQueensland4067AustraliaProfessorSimonKaplanHeadofSchoolSchoolofInformationTechnologyandElectricalEngineeringUniversityofQueenslandSt.Lucia,Queensland4072DearSir,AspartialfulfilmentoftherequirementsfortheBachelorofEngineering(Electrical)Degree(Honours)

3、,Iherebysubmitforyourconsiderationsthisthesisentitled:“PowerSystemLoadModelling”Ideclarethattheworksubmittedinthisthesisistothebestofmyknowledgeandability,andanyworkthatisnotmyownhasbeenquotedandacknowledgedinthebibliography.ThisworkhasnotbeenpreviouslysubmittedforadegreeattheUniversity

4、ofQueenslandoranyotherinstitutes.Yourssincerely,WenZingAdelineChan(40193869)PowerSystemLoadModellingAcknowledgenentsACKNOWLEDGEMENTSFirstandforemost,Iwouldliketoexpressmysincerestappreciationtomythesissupervisor,Dr.Z.Y.Dong,forhispatienceandguidancethroughouttheentiredurationofmythesis.

5、Withouthissupervision,thisthesiswouldneverbeasuccess.Iwouldliketotakethisopportunitytoexpressmydeepestgratitudetomyfamilyfortheirsupportandencouragementtheyhaveprovidedmeovertheyears.Lastbutnotleast,Iwouldalsoliketothankallmyfriendswhohaveofferedmetheirunrelentingassistancethroughoutthe

6、course.-i-PowerSystemLoadModellingAbstractABSTRACTPowerSystemLoadModellingisatechniqueusedtomodelthepowersystemandessentialforstabilityassessments.Accuratemodellingofloadscontinuestobeadifficulttaskduetoseveralfactors,forexamples,lackofpreciseinformationonthecompositionoftheload,changin

7、gofloadcompositionwithtimedelayandweek,seasons,weather,throughtimeandmore.Electricutilityanalystsandtheirmanagementrequireevidenceofthebenefitsofimprovedloadrepresentationinordertojustifytheeffortandexpenseofcollectingandprocessingloaddata,aswellastomodifycomputerprogramloadmod