RESUMOEste trabalho apresenta uma metodologia, baseada nas equações de injeção de correntes (MICT), para o cálculo do fluxo de potência harmônico trifásico em sistemas elétricos equilibrados e desequilibrados (MICTH). A metodologia desenvolvida emprega o método iterativo de Newton-Raphson para obter a solução do sistema de equações não-lineares, onde o sistema matricial é formado por blocos relativos às freqüên-cias harmônicas investigadas. Dessa maneira é possível representar as interações entre as componentes harmônicas de diferentes freqüências.
ABSTRACTThis work presents a methodology, based on the current injection equations (MICT), for the calculus of the harmonic power flow in three-phase, balanced and unbalanced, electric power systems (MICTH). The developed methodology uses the Newton-Raphson method to obtain the solution of a set of non-linear equations, where the matrix system is built in a blocked form for each harmonic frequency. This mathematical approach permits to represent the interaction between harmonic components of different frequencies. It was also developed models for the main linear and nonlinear devices connected to the electric power systems. The MICTH (Three-Phase Harmonic Current Injection Method)
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