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This paper shows that the use of the so-called image approximations in multiphase transmission line models for the evaluation of the per-unit of length line parameters might cause numerical instabilities in the high-frequency range when ground displacement currents along with the frequency-dependent soil models are considered. To assess whether these instabilities are related to the accuracy of the...
Model for the stochastic multi-cable bundle is developed. It is based on lumped circuit model of the multi transmission lines with randomly formed cross-sections along cable system. Interaction of cables with surrounding environment is simulated using hybridization of transmission line theory with the Method of Moments. Validation of developed approach is performed against measurements.
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