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Tese de Doutorado
DOI
10.11606/T.3.2016.tde-28062016-152807
Documento
Autor
Nome completo
Lucas Blattner Martinho
Unidade da USP
Área do Conhecimento
Data de Defesa
Imprenta
São Paulo, 2016
Orientador
Banca examinadora
Bastos, João Pedro Assumpção (Presidente)
Chadebec, Olivier
Krähenbühl, Laurent François
Mesquita, Renato Cardoso
Silva, Viviane Cristine
Título em inglês
Numerical modeling of electromagnetic coupling phenomena in the vicinities of overhead power transmission lines.
Palavras-chave em inglês
Electromagnetic coupling
Finite Element Method (FEM)
Grounding
High-voltage transmission lines
Partial Element Equivalent Circuit (PEEC) Method
Resumo em inglês
Electromagnetic coupling phenomena between overhead power transmission lines and other nearby structures are inevitable, especially in densely populated areas. The undesired effects resulting from this proximity are manifold and range from the establishment of hazardous potentials to the outbreak of alternate current corrosion phenomena. The study of this class of problems is necessary for ensuring security in the vicinities of the interaction zone and also to preserve the integrity of the equipment and of the devices there present. However, the complete modeling of this type of application requires the three- -dimensional representation of the region of interest and needs specific numerical methods for field computation. In this work, the modeling of problems arising from the flow of electrical currents in the ground (the so-called conductive coupling) will be addressed with the finite element method. Those resulting from the time variation of the electromagnetic fields (the so-called inductive coupling) will be considered as well, and they will be treated with the generalized PEEC (Partial Element Equivalent Circuit) method. More specifically, a special boundary condition on the electric potential is proposed for truncating the computational domain in the finite element analysis of conductive coupling problems, and a complete PEEC formulation for modeling inductive coupling problems is presented. Test configurations of increasing complexities are considered for validating the foregoing approaches. These works aim to provide a contribution to the modeling of this class of problems, which tend to become common with the expansion of power grids.
Título em francês
Modélisation numérique des phénomènes de couplage électromagnétique dans les alentours des lignes aériennes de transmission d'énergie.
Palavras-chave em francês
Couplage électromagnétique
Lignes électriques à haute tension
Méthode des éléments finis (MEF)
Méthode PEEC (Partial element equivalent circuit)
Prise de terre
Resumo em francês
Les phénomènes de couplage électromagnétique entre les lignes aé- riennes de transmission d'énergie et des structures voisines sont inévitables, surtout dans les zones densément peuplées. Les effets indésirables découlants de cette proximité sont variés, allant de l'établissement des tensions dangereuses à l'apparition de phénomènes de corrosion dus au courant alternatif. L'étude de cette classe de problèmes est nécessaire pour assurer la sécurité dans les alentours de la zone d'interaction et aussi pour préserver l'intégrité des équipements et des dispositifs présents. Cependant, la modélisation compl ète de ce type d'application implique la représentation tridimensionnelle de la région d'intérêt et nécessite des méthodes numériques de calcul de champs spécifiques. Dans ces travaux, des problèmes liés à la circulation de courants électriques dans le sol (ou de couplage dit conductif) seront abordés avec la méthode des éléments finis. D'autres problèmes résultants de la variation temporelle des champs électromagnétiques (ou de couplage dit inductif) seront aussi considérés et traités avec la méthode PEEC (Partial Element Equivalent Circuit) généralisée. Plus précisément, une condition limite particulière sur le potentiel électrique est proposée pour tronquer le domaine de calcul dans l'analyse par éléments finis des problèmes de couplage conductif et une formulation PEEC complète pour la modélisation de problèmes de couplage inductif est présentée. Des con gurations tests de complexités croissantes sont considérées pour valider les approches précédentes. Ces travaux visent ainsi à apporter une contribution à la modélisation de cette classe de problèmes, qui tendent à devenir communs avec l'expansion des réseaux électriques.
 
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Este trabalho é somente para uso privado de atividades de pesquisa e ensino. Não é autorizada sua reprodução para quaisquer fins lucrativos. Esta reserva de direitos abrange a todos os dados do documento bem como seu conteúdo. Na utilização ou citação de partes do documento é obrigatório mencionar nome da pessoa autora do trabalho.
Data de Publicação
2016-06-30
 
AVISO: O material descrito abaixo refere-se a trabalhos decorrentes desta tese ou dissertação. O conteúdo desses trabalhos é de inteira responsabilidade do autor da tese ou dissertação.
  • MARTINHO, L. B., and SILVA, V. C. Effects of External Currents and Soil Heterogeneities on an Approximate Boundary Condition for the 3-D Finite Element Analysis of Subsurface Conductive Coupling Problems. IEEE Transactions on Magnetics, 2014.
  • MARTINHO, Lucas Blattner, et al. 3-D Finite-Element Analysis of Conductive Coupling Problems in Transmission Line Rights of Way [doi:10.1109/TMAG.2013.2282360]. IEEE Transactions on Magnetics [online], 2014, vol. 50, p. 969-972.
  • SILVA, V. C., et al. [doi:10.1109/TMAG.2010.2074188]. IEEE Transactions on Magnetics [online], 2011, vol. 47, p. 966-969.
  • MARTINHO, Lucas Blattner, et al. 3D Finite Element Analysis of Conductive Coupling Problems in Transmission Line Rights of Way. In COMPUMAG Conference on the Computation of Electromagnetic Fields, Budapest, 2013. Proceedings of 19th COMPUMAG Conference on the Computation of Electromagnetic Fields.Budapest, 2013.
  • MARTINHO, Lucas Blattner, et al. A NON-HOMOGENEOUS DIRICHLET BOUNDARY CONDITION ON THE ELECTRIC POTENTIAL FOR THE FINITE ELEMENT ANALYSIS OF GROUNDING SYSTEMS. In CEM 2011 Eighth International Conference on Computation in Electromagnetics, Wroclaw, 2011. The 8th International Conference on Computation in Electromagnetics - CEM 2011, 11-14 April 2011, Wroclaw, Poland.Wroclaw, 2011.
  • MARTINHO, Lucas Blattner, and SILVA, V. C. Effects of Heterogeneities on an Approximate Boundary Condition for the FE Modeling of Subsurface Conductive Coupling Problems. In The 16th Biennial IEEE Conference on Electromagnetic Field Computation, Annecy, 2014. The 16th Biennial IEEE Conference on Electromagnetic Field Computation - Technical Program.Grenoble : G2eLab, 2014. Abstract.
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