The dynamic control of the power generation system is one of the most important elements in an offshore platform, since it is responsible for maintaining the electrical system stability both in steady‐state and transient operation, thus avoiding the complete loss of power supply and, consequently, large economic losses. In this regard, the Real-Time Digital Simulator (RTDS) becomes an important tool, as it allows to simulate the generation system dynamic in real-time with the possibility of testing actual control and protection devices, through a hardware-in-the-loop scheme. Typically, offline simulation studies of the generator dynamic control are carried out with limited information from manufacturers, which leads to the use of typical data for models and, therefore, the obtention of unreliable responses. However, to obtain a realistic behavior of the electrical system dynamic in the RTDS, an accurate representation of its models is necessary. In this sense, this paper presents the dynamic control validation process of the power generation system of an oil extraction platform in the RTDS, through the use of field data, such as actual regulators' parameters and field tests records. Several simulations of transient phenomena were carried out and the dynamic responses of speed and voltage regulators were analyzed. Comparative analysis between field and laboratory test results demonstrates the validation of the simulation model developed in the RTDS.

This work proposes a implementation of a generic load torque emulator using PWM inverters and induction machines, as a continuation of a previous work, whose implementation has used a load simulator, using scalar type control. This one will also be described in this paper and took place at the electrical drives laboratory of UNIFEI (Federal University of Itajubá – Brazil), to aid the understanding of this proposed alternative continuation work, using vector control. Different types of loads, as the most commonly found in industry, such as constant load torque, speed dependent linear load torque, speed dependent quadratic load torque and others, will be considered. It is intended that with the use of the proposed workbench, the determination of the tested motors performance will be available. The torque signal, to be registered, is originated from the motor pulse-width modulation inverter, torque transducer, isq current. Experimental results will be presented and discussed.

In order to increase the flexibility and performance of gas turbines, generally their manufacturers and research centers involved in their development are constantly seeking the expansion of their operational envelope as well as their efficiency, making the engine more dynamic, less polluting and able to respond promptly to variations in load demands. An important aspect that should be considered when analyzing these prime movers is the assessment of its behavior under transients due to load changes, which can be accomplished through the development of a detailed, accurate and effective computational model. Considering this scenario, the present work aims to develop a model for the simulation and analysis of the dynamic behavior of stationary gas turbines. The engine considered in this analysis has a nominal capacity of 30.7 MW (ISO conditions) and is composed by a two-spool gas generator and a free power turbine. The model was developed using T-MATS, an integrated Simulink/Matlab toolbox, develop by NASA. The gas turbine was evaluated under both permanent and transient regimes and each one of its component was analyzed individually. The assessment made it possible to determine the engine performance parameters such as efficiency, heat rate and specific fuel consumption and its operational limits (surge limits, stall, turbine inlet temperatures, etc.) under different load conditions and regimes. The results obtained were compared with available field data, and the relative deviations for the considered parameters were all lower than 1%.