Da Costa, Eduardo Coelho MarquesKurokawa, Sérgio [UNESP]Shinoda, Ailton Akira [UNESP]Pissolato, José2014-05-272014-05-272013-01-01International Journal of Electrical Power and Energy Systems, v. 44, n. 1, p. 908-915, 2013.0142-0615http://hdl.handle.net/11449/74174A correction procedure based on digital signal processing theory is proposed to smooth the numeric oscillations in electromagnetic transient simulation results from transmission line modeling based on an equivalent representation by lumped parameters. The proposed improvement to this well-known line representation is carried out with an Finite Impulse Response (FIR) digital filter used to exclude the high-frequency components associated with the spurious numeric oscillations. To prove the efficacy of this correction method, a well-established frequency-dependent line representation using state equations is modeled with an FIR filter included in the model. The results obtained from the state-space model with and without the FIR filtering are compared with the results simulated by a line model based on distributed parameters and inverse transforms. Finally, the line model integrated with the FIR filtering is also tested and validated based on simulations that include nonlinear and time-variable elements. © 2012 Elsevier Ltd. All rights reserved.908-915engDigital signal processingElectromagnetic transientsFIR digital filterTransmission linesCorrection methodCorrection procedureDigital filteringDigital signalsDistributed parameterElectro-magnetic transientElectromagnetic transient simulationFinite-impulse responseFIR digital filtersFIR filteringFrequency-dependentHigh frequency componentsLine modelsLumped parameterState equationsState-space modelsTransmission line modelingElectric linesFIR filtersImpulse responseInverse transformsTransientsTransmission line theoryComputer simulationArtigo10.1016/j.ijepes.2012.08.050WOS:000311864800101Acesso restrito2-s2.0-8486655002848308452305492239387430150792972