A utilização de SPICE para solucionar o problema de oscilações numéricas em simulações de sistemas elétricos de potência
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Bagolin, Lucas Frizon
Riboli, Juliano Flores
Iurinic, Leonardo Ulises
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ATP-EMTP is a free software used in power system simulation that was consecrated in the scientific community. However, this program can show numerical oscillation problems due the trapezoidal integration method, especially when the interaction of switching devices and power systems are simulated. Numerical oscillations are well managed by other free software called SPICE, which show the limitation of not having polyphasic power system models. In this context, the present work exhibits mean of constructing three-phase sources, three-phase switches and a π equivalent transmission line model for SPICE, using the LTspice version of this program. The interaction of a six-pulse rectifier with a power system is modeled in ATP-EMTP and LTspice and simulation results compared. The ATP-EMTP simulations shows high numerical oscillations while in LTspice the oscillations are not present.
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