Identificação de sistemas para estudos de transitórios eletromagnéticos em sistemas elétricos de potência

Abstract

This paper presents a methodology for identifying a model of a dynamical system. This model is of interest for transient electromagnetic studies, and especially for the evaluation of fast transients in electrical power systems. The methodology uses identification technique implemented in Matlab and based on the software termed as vector fitting. The method is used to evaluate the system identification process in a dynamic model representation of a 9-bus power system. The calculated model (dynamic equivalent) replaces part of the threephase grid which is assumed as external to the network to be preserved (study area). The transfer functions of the original system in the form of discrete points were obtained from the software ATP (Alternative Transient Program), widely known in the power system electromagnetic transient community. The performance of the methodoly is demonstrated considering several results concerning the parameter identification of curves.

Sintonización del regulador automático de tensión y estabilizador de sistemas de potencia usando optimización por enjambre de partículas

“…Este modelo de tercer orden se usa ampliamente para estudiar la oscilación de baja frecuencia debido a su simplicidad. El conjunto de ecuaciones que se describen a continuación representan este modelo [19]:…”