Análise de estabilidade estática de tensão utilizando o método de Newton-Raphson convencional para resolução do problema de fluxo de carga

Abstract

This paper presents a static voltage stability study, performed by a MATLAB computer program, to calculate the load flow of power system using the conventional Newton-Raphson method. The evidence of the results obtained in the calculation of the implemented load flow program is performed by comparison with the answers given by the professional program ANAREDE, where through is evaluation the margin of voltage stability is accessed, that is the amount of additional load from an operating point that would cause the loss of system stability. The estimated test system is the reduced South-East Brazilian system with 45 buses where tests measure the voltage stability margin behavior of the load increase in the power and ZIP load models, and the effect of the generators reactive power production limits.