COMPARAÇÃO ENTRE O PREDITOR LINEAR E O NÃO LINEAR PARA O FLUXO DE CARGA CONTINUADO

Abstract

In this paper presents the use of the secant andtangent predictors of first order, i.e. linear predictors, andalso the nonlinear predictors (based on Lagrange'spolynomial interpolation of second order) to obtain the P-Vcurve by the load flow equations . The interpolation allowsto reconstruct a function, knowing some points of theirabscissas and ordinates. It is a method to construct a newset of data from the discrete set of known data. The use ofthese predictors is to reduce the computational time spent toobtain the P-V curve. Is also presented in this paper acomparison between the methods with linear and nonlinearpredictors. The central idea of working with the use ofnonlinear predictor is to see if the provided point is reallycloser to the trajectory solutions curve than the linearpredictor.Index Terms ⎯  P-V curve, nonlinear predictors,continuation power flow, Lagrange’s polynomialinterpolation.