“…If there are significative disturbances in the process that can be modeled, it is plausible to include such dynamics in the state space variable set of the plant (Kanieski, Gründling & Cardoso, 2010). Considering the positive sequence of the voltages at the PCC, the equations which represent the behavior of this system can be obtained through the Laplace transform of φ radians delayed sines functions, given by Eq.…”