Desenvolvimento de uma ferramenta para a obtenção das equações utilizadas na simulação dinâmica de sistemas elétricos

Abstract

A challenge in the studies of operation and planning of the electric power system is the execution of dynamic simulations. The simulations aim to analyze the system's stability in the face of short- and long-term disturbances and require the mathematical modeling of the devices involved. This work develops an auxiliary tool capable of interpreting block diagrams that model the voltage regulators of synchronous machines and adds them as a new model in the MatDyn program. The tool was developed in MATLAB, using the object-oriented programming paradigm, and consists of a parser for reading the input file, a function responsible for making the blocks' connections and propagating the signals to obtain the equations and a function responsible for formatting the output file. The tool was validated by implementing existing voltage regulators from PSAT to MatDyn and performing the same simulation in both tools. The results show that the tool was able to correctly describe the block diagram through equations and implement the models automatically in MatDyn. The tool facilitated the implementation of new controllers’ models to MatDyn in a more intuitive way than the description by lines of code, even without a graphical interface. The tool can be used in conjunction with other programs by changing the format of the output file.