Summary
The increasing deployment of three-core (3C) double-layer armored (DWA) submarine power cables necessitates accurate and computationally efficient methods for sequence-impedance calculation. Existing analytical formulations are limited to single-layer armor (SWA) configurations and rely on simplifying assumptions that can restrict their applicability, especially at high frequencies. In this paper, a computationally efficient three-dimensional finite-element method (3D FEM), based on an extension of the short-twisted periodicity concept, is proposed and adopted as the reference solution. The method explicitly captures the helical geometry of both armor layers, longitudinal magnetic field components, and frequencydependent skin and proximity effects. In parallel, a 2.5D method of moments - surface operator
Read more Read less(MoM-SO) model is developed, offering a significantly reduced computational cost. DWA designs with armors of various steel grades and lay directions are examined. Overall, the study provides guidance on the applicability and limitations of existing analytical and numerical approaches for DWA cables and supports the use of 3D FEM as a reference method, with the 2.5D MoM-SO approach serving as an efficient alternative, particularly at higher frequencies.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B1_12569_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Greece |
| Study committees | |
| File size | 1,009 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
BITSI Konstantina - Hellenic Cables Greece; CHALEPLIDIS Iordanis - Hellenic Cables Greece; GKITSOS Dimitrios - Hellenic Cables Greece; CHATZIPETROS Dimitrios - Hellenic Cables Greece; L. KANAS Vasileios - Hellenic Cables Greece; I. CHRYSOCHOS Andreas - Hellenic Cables Greece
