Equivalent Model From Two Layers Stratified Media to Homogeneous Media for Overhead Lines

Belganche, Zeyneb; Maaouni, Abderrahman; Mzerd, A.; Bouziane, and Amine

doi:10.2528/pierm14121509

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…s is the complex Laplace variable. For the case of an overhead cable system, Z may be considered to consist of two components [11,14]…”

Section: Formulation Of Transmission Line Equationsmentioning

confidence: 99%

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Time-Domain Analysis of Overhead Line in Presence of Stratified Earth

Lahmidi¹,

Maaouni²

2020

PIER M

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The presence of the ground affects the propagation on overhead lines through a magnetically induced earth return current. Numerous researches have been conducted to study this influence by considering a homogeneous earth. In the current paper, the transient response of Multi-conductor transmission Lines (MTL) considering a lossy stratified earth is presented. Based on the finite difference time-domain (FDTD) and an improvement of the convolution integral arising from timedomain modeling of frequency-dependent conductors' parameters through the Vector Fitting (VF) algorithm, a novel numerical procedure for solution of a system of telegraph equations is presented. Many simulations are introduced to highlight the effect of soil stratification on the response of the line for a given excitation. The efficiency of an equivalent model, using an equivalent single-conductor, of a multiple conductor system is also established in this work.

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“…s is the complex Laplace variable. For the case of an overhead cable system, Z may be considered to consist of two components [11,14]…”

Section: Formulation Of Transmission Line Equationsmentioning

confidence: 99%

“…To solve the MTL Equations (11) and (14) directly in time domain, the FDTD method presented in [9,11] is improved to solve the currents and voltages along the line. The transmission line is divided into K segments, each of length Δz.…”

Section: Improved Fdtd Algorithm Derivationmentioning

confidence: 99%