Aplicación de algoritmos digitales para la operación de IEDs de protección de líneas de transmisión – funciones de detección, clasificación y localización

Abstract

In this work a computer simulation tool was designed that, through a manageable graphical interface, details the internal processes of a numerical protection relay (IED), such as the detection, classification and localization modules used to protect transmission lines, Capable of facilitating the tasks of understanding and learning the process that takes place within each function that the device executes. The computational tool that was developed can be used in laboratory practices, this will facilitate the study of the actual behavior of the protection elements of a transmission line and in turn will promote the development and research of new algorithms within the area of electrical protection. The computational environment is fundamentally didactic tool, due to an open language, and capable of supporting multiple data sources to be processed as long as they are ordered under the standard IEEE Std. C37.111, commonly known as COMTRADE format and allows Analyze this data in modules separately, leaving open the possibility of implementing complementary modules in future versions. In order to validate the results of the computational tool we used the ATP / EMTP program in which a parallel transmission line was simulated with different fault scenarios, the resulting signals of these simulations were processed in the modular applications of detection, classification and location and the results were exactly the same as expected. In addition, within the validation of the work performed, the voltage and current signals of an actual fault occurred in the Ecuadorian electrical system were also analyzed, the results obtained with the programmed modules allowed to detect, classify and locate the fault correctly.