Lessa, L. S. [UNESP]Prado, A. J. [UNESP]Bonelli, M. L. [UNESP]Kurokawa, S. [UNESP]Pissolato Filho, J.Bovolato, L. F. [UNESP]2014-05-202014-05-202011-01-012011 IEEE Power and Energy Society General Meeting. New York: IEEE, p. 6, 2011.1944-9925http://hdl.handle.net/11449/40665In this article, it is represented by state variables phase a transmission line which parameters are considered frequency independently and frequency dependent. It is analyzed what is the reasonable number of pi circuits and the number of blocks composed by parallel resistor and inductor in parallel for reduction of numerical oscillations. It is simulated the numerical routine with and without the effect of frequency in the longitudinal parameters. Initially, it is used state variables and pi circuits representing the transmission line composing a linear system which is solved by numerical routines based on the trapezoidal rule. The effect of frequency on the line is synthesized by resistors and inductors in parallel and this representation is analyzed in details. It is described transmission lines and the frequency influence in these lines through the state variables.6engElectromagnetic transientEMTPmathematical modelsimulationtransmission linespi circuitnumeric methodwave travelingTrabalho apresentado em evento10.1109/PES.2011.6039179WOS:000297469601142Acesso aberto4830845230549223905011498606590378706478550058200000-0001-5716-6827