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dc.contributor.authorMertz, Christopher Georgeen_US
dc.date.accessioned2013-07-03T08:00:34Z
dc.date.available2013-07-03T08:00:34Z
dc.date.issued2013-07-02en_US
dc.identifier.othervt_gsexam:1319en_US
dc.identifier.urihttp://hdl.handle.net/10919/23289
dc.description.abstract     As the requirements to operate the electric power system become more stringent
and operating costs must be kept to a minimum, operators and planners must ensure that power system models are accurate and capable of replicating system disturbances. Traditionally, load models were represented as static ZIP models; however, NERC has recently required that planners model the transient dynamics of motor loads to study their effect on the postdisturbance behavior of the power system. Primarily, these studies are to analyze the effects of fault-induced, delayed voltage recovery, which could lead to cascading voltage stability issues.
     Genetic algorithms and constrained multivariable function minimization are global and
local optimization tools used to extract static and dynamic load model parameters from postdisturbance data. The genetic algorithm\'s fitness function minimizes the difference between measured and calculated real and reactive power by varying the model parameters. The fitness function of the genetic algorithm, a function of voltage and frequency, evaluates an individual\'s difference between measured and simulated real and reactive power.
     While real measured data was unavailable, simulations in PSS/E were used to create data, and then compared against estimated data to examine the algorithms\' ability to estimate parameters.
en_US
dc.format.mediumETDen_US
dc.publisherVirginia Techen_US
dc.rightsThis Item is protected by copyright and/or related rights. Some uses of this Item may be deemed fair and permitted by law even without permission from the rights holder(s), or the rights holder(s) may have licensed the work for use under certain conditions. For other uses you need to obtain permission from the rights holder(s).en_US
dc.subjectload modelingen_US
dc.subjectgenetic algorithmsen_US
dc.subjectinduction machinesen_US
dc.subjectPSS/Een_US
dc.titleUtilization of Genetic Algorithms and Constrained Multivariable Function Minimization to Estimate Load Model Parameters from Disturbance Dataen_US
dc.typeThesisen_US
dc.contributor.departmentElectrical and Computer Engineeringen_US
dc.description.degreeMSen_US
thesis.degree.nameMSen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical Engineeringen_US
dc.contributor.committeechairDe La Reelopez, Jaimeen_US
dc.contributor.committeememberPhadke, Arun Gen_US
dc.contributor.committeememberCenteno, Virgilio Aen_US


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