Fluxo de carga trifasico com modelagem de incertezas via função de pertinencia sinusoidal / Three-phase power flow with modelling of sinusoidal membership function

AUTOR(ES)
DATA DE PUBLICAÇÃO

2010

RESUMO

A fuzzy direct approach for unbalanced three-phase distribution load flow solutions was developed in this work. The special topological characteristics of distribution networks have been fully utilized to make the direct solution possible. Due to the distinctive solution techniques of the proposed method, the time-consuming LU decomposition and forward/backward substitution of the Jacobian matrix or admittance matrix required in the traditional load flow methods are no longer necessary. The main objective of this load flow is to get results which consider the vagueness in the power system s variables. The three-phase fuzzy load flow uses the bell shape function instead of others common membership functions, like trapezoidal and triangular, to represent fuzzy numbers and simulate a fuzzy load flow. The bell shape function doesn t require additional techniques like a-cuts and linearization to execute a fuzzy load flow because this function has proper operators. Test results demonstrate the validity of the proposed method

ASSUNTO(S)

electric power distribution energia elétrica - distribuição fuzzy sets logica difusa electric power systems sistemas de energia elétrica incerteza conjuntos difusos uncertainties fuzzy logic

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