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dc.contributor.authorVidalinc, Antoine Jr.en_US
dc.date.accessioned2014-03-14T20:51:58Z
dc.date.available2014-03-14T20:51:58Z
dc.date.issued1997-07-15en_US
dc.identifier.otheretd-61797-12279en_US
dc.identifier.urihttp://hdl.handle.net/10919/36842
dc.description.abstractThis thesis investigates and develops a direct method for transient stability analysis using the energy approach [1] and the Phasor Measurement Units (PMUs). The originality of this new method results from a combination of a prediction of the post-fault trajectory based on the PMUs and the Transient Energy Function of a multimachine system. Thanks to the PMUs, the weakness of the direct methods, which is the over-simplification of the generator model, is overcome. This new method consists of fitting a curve to the data of the post-fault path provided by PMUs and identifying the controlling unstable equilibrium point (c.u.e.p.). Two second-order linear models have been estimated and evaluated from a prediction viewpoint. These are a polynomial function and an auto-regressive model. These parameters have been estimated by means of the least-squares estimator. They have been compared to the model proposed by Y. Ohura et al. [6], which has been upgraded into an iterative algorithm. The post-fault trajectory is predicted until the exit point located on the Potential Energy Boundary Surface (p.e.b.s.) is reached. In order to detect with efficiency this exit point and to find the c.u.e.p., it is proposed a combination of the so called "Ball-Drop" method [22] and an improved version of the Shadowing method. These combined procedures give accurate results when they are compared to the step-by-step method, which directly integrates the differential equations using a fourth-order Runga-Kutta method. The simulations have been carried out on a 3-machine system and on the 10-machine New-England power system.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartChapt1.pdfen_US
dc.relation.haspartChapt2.pdfen_US
dc.relation.haspartChapt3a.pdfen_US
dc.relation.haspartChapt3b.pdfen_US
dc.relation.haspartChapt3c.pdfen_US
dc.relation.haspartChapt4a.pdfen_US
dc.relation.haspartChapt4b.pdfen_US
dc.relation.haspartChapt4c.pdfen_US
dc.relation.haspartChapt4d.pdfen_US
dc.relation.haspartChapt5.pdfen_US
dc.relation.haspartChapt6.pdfen_US
dc.relation.haspartDixa.pdfen_US
dc.relation.haspartDixb.pdfen_US
dc.relation.haspartEtd.pdfen_US
dc.relation.haspartRefrs.pdfen_US
dc.relation.haspartVita.pdfen_US
dc.rightsI hereby grant to Virginia Tech or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.en_US
dc.subjectpower systemsen_US
dc.subjecttransient stabilityen_US
dc.subjectreal-timeen_US
dc.subjectphasoren_US
dc.subjecton-lineen_US
dc.titleOn-Line Transient Stability Analysis of a Multi-Machine Power System Using the Energy Approachen_US
dc.typeThesisen_US
dc.contributor.departmentElectrical Engineeringen_US
dc.description.degreeMaster of Scienceen_US
thesis.degree.nameMaster of Scienceen_US
thesis.degree.levelmastersen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineElectrical Engineeringen_US
dc.contributor.committeechairMili, Lamine M.en_US
dc.contributor.committeememberPhadke, Arun G.en_US
dc.contributor.committeememberLiu, Yiluen_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-61797-12279/en_US
dc.date.sdate1997-07-15en_US
dc.date.rdate1997-07-17
dc.date.adate1997-07-17en_US


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