Application of the Transfer Matrix Approach to Direct Lightning Studies of Overhead Power Lines With Underbuilt Shield Wires—Part I: Theory

Stracqualursi, Erika; Araneo, Rodolfo; Faria, José de Assis Fonseca; Andreotti, Amedeo

doi:10.1109/tpwrd.2021.3080525

Cited by 7 publications

(2 citation statements)

References 50 publications

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“…The analysis of both regimes requires the evaluation/computation of the per unit length (p.u.l.) distributed parameters of the cable to be used in a transmission model, either in frequency [5], [6], [7] or time domain [8]. Additionally, transient analysis needs an accurate computation over a wide frequency range, usually up to a few MHz.…”

Section: Introductionmentioning

confidence: 99%

Ground-Return Parameters of Submarine Cables Buried in the Seabed

Lorenzo

Stracqualursi

Marzinotto

et al. 2023

IEEE Trans. Electromagn. Compat.

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The computation of sea/seabed-return distributed parameters of subsea cables is a relevant topic due to the growing importance of submarine connections. This article presents for the first time new formulas for the computation of self and mutual ground impedances and admittances for submarine cables buried in the seabed. The original theory developed by Sunde is applied to a three-media model with air, sea, and seabed. Referring to the practical installation practice of the Italian transmission system operator Terna S.p.A., we compare the prediction of the available models and assess the effect of the different approximations on the computation of the per unit length ground parameters. Finally, we define the limits of applicability of the available models that differ in accuracy and complexity.

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Section: Introductionmentioning

confidence: 99%

Ground-Return Parameters of Submarine Cables Buried in the Seabed

Lorenzo

Stracqualursi

Marzinotto

et al. 2023

IEEE Trans. Electromagn. Compat.

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“…External overvoltages occur under lightning discharges, while internal overvoltages are caused by faults and switching operations. For high-voltage (HV) transmission systems, direct strikes to ground wires, towers, or power conductors play a dominant role [7][8][9][10], while, at lower voltages, induced lightning overvoltages may also become a threat [11,12].…”

Section: Introductionmentioning

confidence: 99%

Tower Models for Power Systems Transients: A Review

et al. 2022

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Fast-front transients play an important role in the insulation design of any power system. When a stroke hits the shield wire or the tower of high-voltage overhead power lines, flashover may occur either along the span or across tower insulators, depending on the relevant voltages and insulation strength. As a result, backflashover may take place from the tower structure to the phase conductor whenever a huge impulse current flows along the tower towards considerably high footing impedances. For these reasons, tower modeling for transients studies is an important step in the insulation design, and also for lower voltage applications, where indirect lightning effects may play a predominant role. However, after decades of research on tower modeling, starting from the 1930s with the first model proposed by Jordan, no consensus has been reached neither on a widely accepted tower model nor on the quantitative effect of the tower models on insulation design. Moreover, the fundamental mechanisms at the base of the transient response of towers and the definition of some fundamental parameters have not been totally clarified yet. The aim of this review is to present the available tower models developed through the years in the power community, focussing mainly on lumped/distributed circuit models, and to help the reader to obtain a deeper understanding of them.

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Review of measures to improve the lightning performance of transmission lines

Visacro

Silveira

2022

Electric Power Systems Research

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Application of the Transfer Matrix Approach to Direct Lightning Studies of Overhead Power Lines With Underbuilt Shield Wires—Part I: Theory

Cited by 7 publications

References 50 publications

Ground-Return Parameters of Submarine Cables Buried in the Seabed

Ground-Return Parameters of Submarine Cables Buried in the Seabed

Tower Models for Power Systems Transients: A Review

Review of measures to improve the lightning performance of transmission lines

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