Summary
The calculation of the shielding factor is essential for modelling submarine cable performance, particularly with respect to current distribution and losses in metallic components such as sheaths and armour. Existing approaches show limitations at higher frequencies, and does not fully account for the influence of armour, resulting in reduced accuracy and limited practical guidance.
Read more Read lessWithin the framework of B1.90, this paper proposes an analytical method for calculation of the shielding factor via third-order polynomial equations . The method extends previous approaches by incorporating both circulating and eddy current effects, enabling a more consistent representation of the electromagnetic behaviour of armoured three-core cables across a wide frequency range.
The proposed method is applied to the calculation of positive- and zero-sequence impedances and validated against 3D Finite Element Model (FEM) simulations and shows good agreement for non-magnetic armoured cables and significant improvement for magnetic armour. However, limitations remain for reactance calculation in cables with magnetic armour, indicating that further refinement of loss modelling is required.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B1_10257_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | France |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
ESCOLANO Nicolas - RTE; ANILD Sara - BakerHicks Power
Keywords
HVAC, 3-core Submarine Cable, Sequence Impedance, Analytical Calculation
