Desarrollo de una herramienta computacional para el procesamiento de señales almacenadas en archivos de formato COMTRADE para análisis del sistema de potencia y de sistemas de protecciones

Abstract

The companies dedicated to the business of transmission and distribution of electric power have modern equipment for recording disturbances installed in substations. This equipment provides information of disturbance events that normally occur in the electrical system, which are used to perform post-operative analysis of the system. In the present project a computational tool is developed with the GUIDE tool graphical interface of the MATLAB software, which allows to load any file in COMTRADE format (Standard common format for the transient data exchange) to perform an analysis of different transitory events that affect the normal operation of the electrical system. The analysis is obtained by visualizing the waveforms of the analog channels (currents and voltages), the digital channels (protection modules actuation) and the processing of the analog signals to obtain the estimated phasors of each period, the harmonics generated in each period, the trajectory created by the monophasic and three-phase powers, and the trajectory formed by the impedance seen by the protection relays.