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This work presents the analysis behavior of the distance protection function in power transmission systems that use unified power flow controllers. The proposed analysis is based on voltage and current measurements provided by instrument transformers, positioned on the buses where this equipment is installed, to an intelligent electronic device. The study was elaborated in a computational routine in the MATLAB R © software suite and was tested via simulations of a transmission system in the Simulink R © environment. The results reveal the impact of this equipment on the protection function and provide information about the best choice for the positioning of the instrument transformers.

Análise do desempenho da função de distância em linhas de transmissão que utilizam o unified power flow controller.