Simulation of "Tsunami Waves" Propagating along Non-Linear Transmission Lines

The paper compares three methods for computer simulation oftransients on transmission lines with losses and nonlinear behavior,namely distributed LC model, FDTD (Finite-Difference Time-Domain)method, and a new and very effective Method of Slices. The losses areresponsible for attenuation and shape c...

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Bibliographic Details
Published inRadioengineering Vol. 14; no. 3; pp. 41 - 47
Main Author J. Valsa
Format Journal Article
LanguageEnglish
Published Spolecnost pro radioelektronicke inzenyrstvi 01.09.2005
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Summary:The paper compares three methods for computer simulation oftransients on transmission lines with losses and nonlinear behavior,namely distributed LC model, FDTD (Finite-Difference Time-Domain)method, and a new and very effective Method of Slices. The losses areresponsible for attenuation and shape changes of the waves as functionof time and distance from the source. Special behavior of the line dueto voltage-dependent capacitance of the line is considered in detail.The non-linear nature of the line causes that the higher is the voltagethe higher is the velocity of propagation. Then, the waves tend to tiltover so that their top moves faster than their base. As a result"tsunami waves" are created on the line. Fundamental algorithms arepresented in Matlab language. Several typical situations are solved asan illustration of individual methods.
ISSN:1210-2512