Modeling Nonuniform Transmission Lines for Time Domain Simulation of Electromagnetic Transients

Ramirez, Abner; Semlyen, A.; Iravani, Reza

doi:10.1109/mper.2002.4311939

Cited by 19 publications

(11 citation statements)

References 21 publications

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“…Several methods have been proposed that allow computing time domain electromagnetic transients in Nonuniform Transmission Lines (NUTLs) [1][2][3][4][5]. In [1,2] modeling of single-phase transmission lines was presented whereas authors in [3][4][5] deal with Multiconductor Transmission Lines (MTLs). In [3,4] a two-port model is first developed in the frequency domain and afterwards it is converted to the time domain.…”

Section: Introductionmentioning

confidence: 99%

“…In [1,2] modeling of single-phase transmission lines was presented whereas authors in [3][4][5] deal with Multiconductor Transmission Lines (MTLs). In [3,4] a two-port model is first developed in the frequency domain and afterwards it is converted to the time domain. In [5] the Finite Difference Time Domain (FDTD) Method is used to directly solve the MTL partial difference equations for the special case of frequency independent electrical parameters.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Time Domain Electromagnetic Transient Analysis of Aerial Nonuniform Transmission Lines Excited by an Incident Electromagnetic Field

Sánchez-Alegría

Moreno

Loo‐Yau

et al. 2019

Mathematical Problems in Engineering

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In this paper a model for Nonuniform Transmission Lines for electromagnetic transient analysis that incorporates frequency dependency of electrical parameters, variation of line electrical parameters with respect to distance, and distributed excitations due to incident electromagnetic fields is presented. The model is developed using the Method of Characteristics in the actual physical domain instead of the Modal Domain; this simplifies the mathematical development and the final equations. Moreover, the equations of the resultant model are valid either for two-conductor lines or for multiconductor lines without any change; this can be an advantage when the computer programming language considers a scalar as a 1x1 matrix. The proposed numerical model is developed under the hypothesis that the dielectric surrounding the conductors is homogenous. It is shown that in this case the characteristic curves of a Nonuniform Transmission Line become straight lines. Finally, the model is validated by comparison with results obtained using the Numerical Laplace Transform method.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Time Domain Electromagnetic Transient Analysis of Aerial Nonuniform Transmission Lines Excited by an Incident Electromagnetic Field

Sánchez-Alegría

Moreno

Loo‐Yau

et al. 2019

Mathematical Problems in Engineering

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“…the matrix transfer function of voltage and current from one segment end to the other, to obtain an equivalent nodal admittance matrix [8]. More recently, it was proposed to represent the line directly by a matrix transfer function [9] with the time-domain responses obtained via numerical integration [10]. However, it was found that spurious oscillations might occur, e.g.…”

Section: Introductionmentioning

confidence: 99%

“…see Fig. 11 in [10] or [11]. Thus, there is still a need to accurately represent a NuL in a time-domain simulation framework.…”

Section: Introductionmentioning

confidence: 99%

Modelling of non‐uniform lines using rational approximation and mode revealing transformation

Lima

Moura

Gustavsen

et al. 2017

IET Generation, Transmission & Distribution

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“…Although several numerical methods such as the finite difference method, method of moments, the method of characteristics, the modal method, etc. [1][2][3][4][5][6][7][8][9] are nowadays used for computation of electromagnetic transients on a transmission line (TL) in a time-domain (TD), this new one, offers a significant advantage in a network analysis with distributed and lumped parameters. This advantage is manifested in an easy handling with complex network with distributed and lumped parameters thanks to assembling procedure which is inherent to the finite element method.…”

Section: Introductionmentioning

confidence: 99%

FEM analysis of electromagnetic transients in linear networks

Lucić

Jurić-Grgić

Jović

2008

Int Trans Elec Energy Syst

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SUMMARYThis paper describes a new general solution method when modeling electromagnetic transients in single networks with linear lossy transmission lines in the time domain using the finite element method. Based on FEM and the generalized trapezoidal rule a novel numerical procedure for the system of the telegraph equations is presented. The presented technique enables to make a simple algorithm for the analysis of electrical network with linear lossy transmission lines. The proposed method for electrical network transient's analysis including lossy transmission lines in time domain has been successfully tested and compared to the analytical solution.

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Modeling Nonuniform Transmission Lines for Time Domain Simulation of Electromagnetic Transients

Cited by 19 publications

References 21 publications

Time Domain Electromagnetic Transient Analysis of Aerial Nonuniform Transmission Lines Excited by an Incident Electromagnetic Field

Time Domain Electromagnetic Transient Analysis of Aerial Nonuniform Transmission Lines Excited by an Incident Electromagnetic Field

Modelling of non‐uniform lines using rational approximation and mode revealing transformation

FEM analysis of electromagnetic transients in linear networks

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