Estimación de la inercia equivalente de un sistema de potencia usando mediciones sincrofasoriales : herramienta computacional, en lenguaje Python, para la estimación de la inercia equivalente del SEP empleando mediciones sincrofasoriales tipo ambiente.

Abstract

This paper presents a methodology to estimate the equivalent inertia of an Electrical Power System (EPS) using ambient synchrophasor measurements. The methodology employs measurements of frequency and power transferred through interconnection lines between previously defined areas by means of a modal analysis, which allows determining the associated oscillation modes (eigenvalues) and mode shapes (eigenvectors). Synchrophasor Measurement Units (PMU) will be placed at the boundary busbars to obtain the bus voltage phasors and current phasors flowing through the interconnection lines. Additionally, the ratio between equivalent inertias of each area is calculated using a mathematical formulation based on modal identification of the frequency measurements. Finally, the equivalent inertia of each area can be determined from the equivalent inertia of the system. The methodology is applied to the IEEE New York - New England system of 68 busbars and 16 generators, widely used in small signal analysis of electrical power systems.