Simulação de Transitórios Eletromagnéticos em uma Rede Real com a Aplicação de um Limitador de Corrente de Curto-Circuito Supercondutor Resistivo
Keywords: Superconductor Fault Current Limiter, Electrical Systems Protection, Distribution Networks, Electrothermal Analogy, Electromagnetic Transients
AbstractWith the growing demand for electricity, there is an expansion of the distribution network, with the insertion of new elements (capacitor bank, motors, etc.) and even energy sources such as distributed generation. Such insertions can intensify transient electromagnetic current phenomena in these networks, such as short circuits, motor starting and energizing of transformers and capacitor banks, being necessary analyzes to evaluate these events, as well as take action to mitigate/eliminate high currents. One of the promising alternatives is the use of resistive type superconductor fault current limiter (r-SFCL), due to its robustness and the intrinsic of material characteristic for such an application. In this context, this work analyzes the application of an r-SFCL in a real distribution network, by using ATPDraw program, and considering the electrothermal analogy for modeling the fault current limiter. The analyses were based on the 4 phenomena mentioned above, considering the performance of the r- SFCL against them. The results demonstrated the ability to reduce short-circuit currents by the proposed device, and selectivity against other events.