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João Pessoa, Brazil

De Almeida A.M.F.,Federal University of Sergipe | Pamplona F.M.P.,Federal Institute of Science | Braz H.D.M.,Federal University of Paraiba | Da Silva J.A.C.B.,Federal University of Campina Grande | Barros L.S.,Federal University of Rio Grande do Norte
2014 6th World Congress on Nature and Biologically Inspired Computing, NaBIC 2014 | Year: 2014

This paper deals with integrated voltage and harmonics distortion control (volt/THD) for radial distribution feeders in planning issues, by means of the application of automatic voltage regulators (AVRs) banks and harmonic passive filters. A multiobjective genetic algorithm (SPEA2) improved using fuzzy logic is presented to solve the VOLT/THD problem, since it is a combinatorial multiobjective optimization problem. The expert knowledge is taken into account via fuzzy logic in order to reduce the search space using voltage regulators in standard units. According to the multiobjective optimization fundamentals, an optimal solution ensemble is obtained, which concomitantly represents the solutions to both objectives, in such way that the operational restrictions of systems are satisfied. Two objectives have been established: voltage level deviation and total harmonic distortion. An algorithm is applied to harmonic analysis in radial systems, with application of models compatible with practical data. The algorithm is evaluated for a known 34-bus feeder in the literature of the subject. © 2014 IEEE. Source


da Silva S.L.M.,Federal Institute of Science | Arcanjo A.H.M.,Federal Institute of Science | Pinto L.R.,Federal Institute of Science | Rosa G.P.,Federal Institute of Science | de Souza G.H.,Federal Institute of Science
International Journal of High Dilution Research | Year: 2011

Highly-diluted medicines are used in clinical practice to treat many pathologies of pigs [1-4]. This therapeutic tool had its potential for valued use due to the global scenario changing on the restriction to limit of antimicrobial residues in the security feeding and production of foods from animal origin for human consume, especially the meat production [5]. Through the evidence of mass measurement, the usage profile of group B treatment shown to work with pigs and give greater weight live gain in group A during the available trial. Future studies should be conducted with larger numbers of animals to confirm the incidence of the unique profile, with replications to assess the complete production cycle, including the relationship ending / sow / year. Finally, other scales and dilutions should be analyzed to adjust for best answer from the best treatment effect profile. Source

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