This paper presents a methodology to optimize reinforcements in transmission systems considering high wind power penetration represented by generation scenarios. The proposed methodology minimizes the total costs of the investments and guarantees a viable operation of the system. The increase in the capacity of the transmission lines, provided by the application of reinforcements in the appropriate places, allows a greater absorption of wind energy from the system, being able to take advantage of the benefits of renewables. The formulation considers an optimal active power flow and the relationship between the susceptance and the power capacity of transmission lines. The proposed methodology is solved with the linear programming technique. The IEEE 24 bus system is used to show the main concepts discussed in this paper. Resumo: Este artigo apresenta um método para otimizar os reforços no sistema de transmissão considerando um sistema com alta penetração de energia eólica representada por cenários de geração. A metodologia proposta minimiza os custos totais dos investimentos e garante uma operação viável do sistema. O aumento da capacidade das linhas de transmissão, proporcionado pela aplicação dos reforços nos locais adequados permite uma maior absorção de energia eólica do sistema, maximizando os benefícios de uma geração renovável. A formulação proposta considera o calculo do fluxo de potência ótimo e a relação entre a susceptância e a capacidade de transmissão das linhas de transmissão. A metodologia proposta é resolvida com a técnica de programação linear. O sistema IEEE 24 barras é utilizado para mostrar os principais conceitos tratados neste trabalho.
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