Análise da correção de tensão em circuitos secundários de BT em anel usando capacitores
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Data
2011-05-27
Autores
Luchini, Octávio Matos
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Editor
Universidade Federal do Espírito Santo
Resumo
This work presents a study of the best allocation point for capacitor banks in distribution secondary networks in ring in order to achieve suitable supply voltage levels for consumption. At first, the main characteristics of a secondary distribution system are presented, with emphasis on the ring topology, and quality of energy involved. Then, the major methods of drop voltage calculation on the network are discussed. It is presented the development of an unsimplified method that allow to trace the voltage profile along the feeder before and after insertion of the banks to assess the optimum allocation. The implemented algorithm is also presented, as well as the mathematical modeling of system components and the considerations that were made according to the chosen capacitor connection point. The impact of the introduction of capacitor banks in the amplification of voltage harmonics is also discussed with the due consideration and mathematical modeling for acertain harmonic frequency. Computer simulation results of the implemented algorithm are presented for certain networks at different level loading. Such results demonstrate the feasibility of the method in the analysis of the insertion of capacitive reactive power in the network and assessing the amplification of voltage harmonics caused by the banks connection.
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Palavras-chave
Correção de tensão , Rede anel , Banco de capacitores