Identificación de parámetros de líneas de transmisión usando una metodología robusta basada en mediciones sincrofasoriales

Abstract

Currently the characteristic parameters of the active and passive elements that make up the power system are usually inaccurate due to several factors, among them: approximate data shown by manufacturers, altered circuits without rectification and updating, deteriorated materials, climatic conditions, among others. Particularly for transmission lines, their parameters are calculated using the existing literature, i.e. the geometry of the transmission towers and the spatial location of the conductors. The present work shows the development of an application capable of calculating the parameters of the transmission lines using Phasor Measuring Units (PMUs) that provide real-time measurements. After a treatment of these measurements, the parameters of the transmission lines can be calculated with greater accuracy and precision. The application consists basically of two parts: the first, the acquisition and processing of data from the software WAProtector; and the second, the calculation of transmission line parameters, using a constrained least squares algorithm. At the end the identified parameters of the transmission line are shown graphically and statistically and the comparison is made with the data stored in the databases.