Guidelines Resulting from the Application of Hybrid Dynamic Simulation in Calibrating Parameters of the Itaipu Generators

Power system equipment modeling is a key-activity in the electric industry. The modeling capacity allows electrical engineers to comprehend the system behavior and to predict possible problems, affecting power system planning, operation and design. Also, the differences between equipment models and system responses urge to be minimized, avoiding engineers to believe that the power system is more robust than it really is. Among all equipment, the synchronous generators play a central role in the modeling process, because they are the predominant form of generation and their dynamic behavior affects almost all aspects of power system operation. Recently, the oscillographic systems have been upgraded, providing more monitored quantities with better precision. Although several works present studies using phasor measurement data, there is a lack of discussion of model calibration using disturbance data generated by oscillographic recorders. In this context, this paper intends to contribute with a synthesis of the experience of the Itaipu power plant in using oscillographic data in model calibration, presented as a set of guidelines highlighting practices that can help engineers to evaluate generator models.