Análise de falhas em grupos moto-geradores

Abstract

The search for energy sources due to crises in the Brazilian electric sector boosted the development, research and use of Moto-Generator Groups (GMGs), as a source of autonomous and independent electricity. Consolidated and constantly evolving companies use electricity as a source of energy for thousands of electrical equipment, carrying out various activities, strengthening their economic and social structure. In this context, GMGs play an extremely important role, since their use allows the electromechanical conversion, generating voltage at their terminals, producing electric energy. Environments where the interruption of electric power would cause lifethreatening or economic losses, there is a greater use of GMGs. The understanding of the Laws governing its operation, together with other knowledge, has provided many technological innovations in the field of electric motors and generators over time and has provided the construction of more sophisticated devices and equipment. These equipment are subjected to internal and external stresses, in which they are susceptible to failures. These faults should be remedied as they may cause the permanent destruction of these machines. Therefore, the study and implementation of methods capable of diagnosing failures in the GMGs monitoring and control process is of extreme importance. This work applied the Fault Tree Analysis technique, relating causes and effects of the main faults that occur in the operation of GMGs, both of mechanical and electrical order, in order to locate and solve such faults in a practical and fast way.