Uma contribuição à otimização da transmissão de energia elétrica com foco na qualidade da tensão

Abstract

It is well known that the electrical energy transmission procedures make use of traditional overhead lines. The operation performances of these lines are strongly dependent on their equivalent inductances and capacitances which are strictly tight to the concept of reactive energy consumption and generation. Due to the relationship between this type of energy and the operational voltage levels, it is quite straightforward that the voltage quality standards are directly linked to the constructive characteristics of the overhead lines. Within this context and considering the main target of this dissertation, focusing the optimization of transmission energy procedures without ignoring the voltage quality matters, the present research makes use of a modern technical approach based on Genetic Algorithm (GA) to look for the best physical arrangement for a given transmission line, without forgetting the power quality requirements. In addition to an introductory chapter related to classical principles leading to the line equivalent inductances and capacitances, the methods to cope with optimization processes are described with emphasis to the mentioned GA. Using this approach, a computational program is obtained and tests are conduct to highlight its application. Two distribution lines are considered a 34.5 and a 138 kV line. Throughout these examples the software potentiality is clearly shown and the gains on power transmissibility are illustrated.