Linear Solution of the High-Voltage Transmission Line Transient Influence Problem

2022 IEEE 7th International Energy Conference (ENERGYCON 2022) 2022
Aleksandrs Dolgicers, Ivars Zālītis, Jānis Berkolds, Jevgeņijs Kozadajevs

The influence of high-voltage transmission lines on cables with a conductive shield has not been widely studied, especially during transients. In this paper, a lumped parameter model of a transmission line is developed in the Laplace domain in addition to a steady-state model to determine the effect of a free decaying component of a current induced into a fiber-optic cable shield. Numerical inverse Laplace transform and linear circuit theory is combined in a solution applicable to models containing mutual induction and electrostatic links between different conductors. A case study is performed for a steel-shielded fiber-optic cable installed on a 110 kV line, which indicates that the induced current is a significant threat to the cable considered. The demonstrated approach can be used for analysis of the influence of a high-voltage line on any elongated conductive object during transients. The proposed method is well suited for parallel computing due to linear nature of equation systems used.

Keywords
Transmission line modelling, circuit analysis, numerical inverse Laplace transform
DOI
10.1109/ENERGYCON53164.2022.9830260
Hyperlink
https://ieeexplore.ieee.org/document/9830260

Dolgicers, A., Zālītis, I., Berkolds, J., Kozadajevs, J. Linear Solution of the High-Voltage Transmission Line Transient Influence Problem. In: 2022 IEEE 7th International Energy Conference (ENERGYCON 2022), Latvia, Riga, 9-12 May, 2022. Piscataway: IEEE, 2022, pp.1-6. ISBN 978-1-6654-7983-7. e-ISBN 978-1-6654-7982-0. Available from: doi:10.1109/ENERGYCON53164.2022.9830260

Publication language
English (en)