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Theses

L'étude du régime non-sinusoïdal dans les systèmes électriques

Abstract : This thesis deals with the study, by simulation, of power Systems in non-sinusoidal situations including harmonie pollution effects. First the principal parameters of non-sinusoidal wave shapes and working conditions and some éléments of power theory were reviewed. Novel complementary intégrais and derivatives harmonie distortion factors were proposed as well. Secondly, the modelling of the main types of harmonie sources was studied, either by adapting existing models where possible or by designing new models, such for power converters or TCRs. The linear parts of the System where then treated by the appropriated models or making new proposais (as for power transformers). After evaluating the simulation principles of the power Systems operating in non-sinusoidal conditions, itérative harmonie analysis was selected for localised studies, where its convergence properties were improved. For mil scale system studies, a software program was developed based on the dichotomous method, where the hybrid modelling, in both time and frequency domains, of non-linear éléments is assumed. The results of simulations conducted on the IEEE 14-bus modified test network were used in order to analyse the interactions between the harmonie sources, mainly by using the individual and total harmonie active powers. Finally, the principal types of harmonie pollution effects hâve been studied and detailed for several System constituents.
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Léonardo-Géo Manescu. L'étude du régime non-sinusoïdal dans les systèmes électriques. Energie électrique. Institut National Polytechnique de Grenoble - INPG, 1998. Français. ⟨tel-00821087⟩

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