An investigation into the effects of load modeling of transient stability and analysis of voltage collapse

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dc.contributor.advisorPetroianu, Alexanderen_ZA
dc.contributor.authorKhumalo, Josephen_ZA
dc.date.accessioned2014-11-15T19:35:51Z
dc.date.available2014-11-15T19:35:51Z
dc.date.issued1992en_ZA
dc.descriptionBibliography: leaves 187-193.en_ZA
dc.description.abstractThe aim of this thesis is to investigate the effects of load modeling on transient stability studies and to analyze the phenomenon of voltage collapse. In addition, the different generator models are compared and the effects of voltage dips on induction motor performance are investigated. The modeling of loads dates back to the late forties when network analyzers were still in use. The prohibitive computational requirements resulted in many approximations being made to the load models. In turn, this resulted in the use of simple models which did not provide sufficient information about the dynamic behavior of loads. With the advent of digital computers, more accurate load models could be used in dynamic simulations. Despite this improvement in computational tools, the problem of load modeling for stability studies is still very complex. The load composition changes with the time of the day, the consumer's lifestyle, weather, state of the economy and other factors. The accurate load model would include amongst other things, the effects of the abovementioned factors. Since these factors are unpredictable, accurate load modeling becomes very complex indeed. It is mainly for these reasons that the approximate are still widely in use. Ideally, the response of these approximate models should be compared to the actual loads under similar disturbances. A further concern of the thesis is the study of voltage stability. The voltage stability problem has become a matter of growing concern amongst bulk transmission utilities worldwide over the last decade. For long, the stability of a power system was related exclusively to the synchronous stability of the generators.en_ZA
dc.identifier.apacitationKhumalo, J. (1992). <i>An investigation into the effects of load modeling of transient stability and analysis of voltage collapse</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/9645en_ZA
dc.identifier.chicagocitationKhumalo, Joseph. <i>"An investigation into the effects of load modeling of transient stability and analysis of voltage collapse."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1992. http://hdl.handle.net/11427/9645en_ZA
dc.identifier.citationKhumalo, J. 1992. An investigation into the effects of load modeling of transient stability and analysis of voltage collapse. University of Cape Town.en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Khumalo, Joseph AB - The aim of this thesis is to investigate the effects of load modeling on transient stability studies and to analyze the phenomenon of voltage collapse. In addition, the different generator models are compared and the effects of voltage dips on induction motor performance are investigated. The modeling of loads dates back to the late forties when network analyzers were still in use. The prohibitive computational requirements resulted in many approximations being made to the load models. In turn, this resulted in the use of simple models which did not provide sufficient information about the dynamic behavior of loads. With the advent of digital computers, more accurate load models could be used in dynamic simulations. Despite this improvement in computational tools, the problem of load modeling for stability studies is still very complex. The load composition changes with the time of the day, the consumer's lifestyle, weather, state of the economy and other factors. The accurate load model would include amongst other things, the effects of the abovementioned factors. Since these factors are unpredictable, accurate load modeling becomes very complex indeed. It is mainly for these reasons that the approximate are still widely in use. Ideally, the response of these approximate models should be compared to the actual loads under similar disturbances. A further concern of the thesis is the study of voltage stability. The voltage stability problem has become a matter of growing concern amongst bulk transmission utilities worldwide over the last decade. For long, the stability of a power system was related exclusively to the synchronous stability of the generators. DA - 1992 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 1992 T1 - An investigation into the effects of load modeling of transient stability and analysis of voltage collapse TI - An investigation into the effects of load modeling of transient stability and analysis of voltage collapse UR - http://hdl.handle.net/11427/9645 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/9645
dc.identifier.vancouvercitationKhumalo J. An investigation into the effects of load modeling of transient stability and analysis of voltage collapse. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 1992 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/9645en_ZA
dc.language.isoengen_ZA
dc.publisher.departmentDepartment of Electrical Engineeringen_ZA
dc.publisher.facultyFaculty of Engineering and the Built Environment
dc.publisher.institutionUniversity of Cape Town
dc.subject.otherElectrical and Electronic Engineeringen_ZA
dc.titleAn investigation into the effects of load modeling of transient stability and analysis of voltage collapseen_ZA
dc.typeMaster Thesis
dc.type.qualificationlevelMasters
dc.type.qualificationnameMScen_ZA
uct.type.filetypeText
uct.type.filetypeImage
uct.type.publicationResearchen_ZA
uct.type.resourceThesisen_ZA
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