Avaliação de desempenho de algoritmos de sincronismo com a rede elétrica

Abstract

The synchronism algorithms performance a very important role in the control of microgrid converters, being fundamental for the control of power flow between these converters and the main grid. In island operation, the synchronism algorithms provide important frequency and voltage values so that the converters operate properly on a steady state and are also concealed and disconnected from the main grid. Thus, the performance evaluation of such algorithms is very important. Thus, this work proposes to evaluate the performance of four synchronism algorithms for microgrids converters, testing them under different conditions of Electric Power Quality (EPQ) disturbances. In order to adjust the control loop parameters of these algorithms, the same methodology and gain criteria are adopted, in order to allow an egalitarian comparison for all algorithms analyzed.In these algorithms the dynamic response and the steady state condition are evaluated, considering the main disturbance conditions. The practical and simulated results show the efficiency of the algorithms in synchronism with the voltage signal, even in the presence of disturbances. However, some limitations are found in the implemented algorithms, regarding the dynamic response.