Uma nova proposta para detecção e classicação de transitórios em linhas de transmissão

Abstract

The protection of transmission lines is extremely important because they are responsible to transport the energy from the generation to the point of consumption. Often, the transmission lines are vulnerable to transient events that cause disturbances, such as lightning, short circuits, switching, input and rejection of load blocks, power transformers excitation, among other events. In this work a new technique for detection and classification of transient disturbances, which allows to differentiate the different types of events occurring in a power system is presented. For this, the research and the study of existing methods of protection relays served as the basis for the development and realization of this work. This research consists in creating a test system and the simulations of different events that eventually can happen in transmission lines. The simulations were performed in EMTPATP software and the results generated were saved in a database signals. An algorithm that will analyze the signals generated database was implemented in MATLAB ® software for the detection and classification of transient events. The results were satisfactory, because it was possible to detect and correctly classify each of the phenomena mentioned in a little space of time.