Aplicação da lógica fuzzy em um sistema de pré-análise de oscilografias em unidades de geração

Abstract

Nowadays it is a common practice to have digital fault recorders installed in most electric power systems (SEPs) installations. These devices perform a continuous monitoring function recording any disturbances related to significant quantities such as voltages and currents. The analysis of the large amount of data provided by these devices has become a challenge for engineers analysts who have to prioritize the most relevant records because there is no able time to verify all the data. This work presents a study to verify the applicability of fuzzy logic to solve this problem, where the proposed objective is the adaptation of an existing decision making module from an automated oscillography analysis scheme. It is expected that this work would provide the decision-making module the ability to deal with inaccurate information, based on the human reasoning process. Tests performed with real disturbance records shows that the proposed methodology fulfills the stated objectives.