Computation of Armor Losses in AC Submarine Cables

Giussani, Luca; Rienzo, Luca Di; Bechis, Massimo; Falco, Carlo de

doi:10.1109/tpwrd.2020.3031735

Cited by 14 publications

(8 citation statements)

References 16 publications

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“…The geometry of the power cable exhibits symmetries [6] which can be exploited for assembling the matrix associated to the linear system of equations (1). In order to describe them, it is necessary to analytically represent the curves of the phase cables and of the screen wires.…”

Section: Exploiting Cable Symmetriesmentioning

confidence: 99%

“…A N IMPORTANT part of the electrical system of an offshore wind farm is the connection between wind turbines and substation(s), where the voltage is elevated before power is transmitted to the land substation. These connections are realized with medium voltage three-phase submarine cables, in which, differently from the case of high voltage tripolar submarine cables [1], [2], each phase has a screen made of conductive wires; the computation of the screen losses is a challenging task and brute force FEM approaches are characterized by a high computational burden.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Efficient PEEC Computation of Losses and Currents in Screens of Round Wires in Submarine Tripolar Cables

Rienzo¹,

Giussani²,

Bechis³

et al. 2022

Preprint

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<div>A PEEC formulation is applied to compute Joule losses and currents in the wires composing the screens of the phase conductors in a submarine tripolar cable. In order to model the infinite extent of the cable and to reduce the computational burden, simmetries of the geometry are exploited. A good agreement is obtained with brute force FEM simulations, with a dramatic reduction of computational times and memory requirement.</div>

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Section: Exploiting Cable Symmetriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Efficient PEEC Computation of Losses and Currents in Screens of Round Wires in Submarine Tripolar Cables

Rienzo¹,

Giussani²,

Bechis³

et al. 2022

Preprint

Self Cite

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“…1. In previous work [2], [3], [4], [5] it was shown that, by applying suitable integral formulations and exploiting the existing symmetries and periodicity, the study of each subcomponent of such a cable can be performed at a very small fraction of the computational cost of competing methods.…”

Section: Introductionmentioning

confidence: 99%

“…the double-helix geometry of shielding wires and the helical winding in the armor) are to be coupled, though, the resulting linear algebraic system is very large and complex and, as a whole, no longer enjoys the convenient structural properties of the decoupled sub-systems (e.g. the circulant matrix property descending from helical geometry [3]).…”

Section: Introductionmentioning

confidence: 99%

Integral Formulation for Losses Computation in Tripolar Submarine Cables With Shield Wires, Moisture Barriers, and Armor

Bechis,

de Falco,

Di Rienzo

2024

IEEE Trans. Magn.

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Method-of-Moments (MoM) is coupled with PEEC in order to compute Joule and hystheresis losses in the armor, shields and moisture barriers of a submarine tripolar cable. The large size and complex structure of the linear algebraic system resulting from the problem discretization demands for a suitably tailored solver. We describe a block-Gauß-Seidel preconditioner for Krylov subspace methods that allows for a matrix-free solver implementation, resulting in a dramatic reduction of computation time and memory requirements w.r.t. other brute-force modeling approaches.

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“…Thus, the problem of loss allocation in three-core armored cables (TCACs) has been tackled during the last 10 years, either in the form of new analytical formulations (for sheath and armor losses) [6,7], numerical methods, such as the method of moments (MoM-SO) [8], integral methods [9], the finite element method (2D FEM [3,4,10,11], 3D FEM [12][13][14][15][16]), multi-conductor cell [17][18][19] or more experimentally oriented [3,4,[20][21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Use of 3D-FEM Tools to Improve Loss Allocation in Three-Core Armored Cables

Del-Pino-López

Cruz-Romero

2021

Energies

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Loss allocation through analytical expressions in three-core lead-sheathed armored cables is challenging due to the complex geometry of this type of cable, commonly employed in submarine energy transmission systems (involving twisted conductors, sheaths and armor). Most of the expressions of the IEC standard 60287 have not been properly adapted for three-core armored cables, leading to inaccurate values for the different losses, so important efforts are currently devoted to improving them. In this work, an improved ultra-shortened 3D finite element model (FEM) is employed for developing an in-depth analysis of the electromagnetic interactions that take place in 6 real cables, being especially focused on those aspects that are not considered in the IEC standard. As a result, important conclusions are derived regarding the losses in conductors and sheaths, which introduce different corrections for improving the accuracy of the IEC expressions. The new formulation is then employed to propose a simplified experimental armor loss allocation procedure. This is virtually applied through the FEM tool to more than 700 cable configurations, showing a remarkable improvement in the loss allocation over the IEC standard and previous experimental procedures.

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Computation of Armor Losses in AC Submarine Cables

Cited by 14 publications

References 16 publications

Efficient PEEC Computation of Losses and Currents in Screens of Round Wires in Submarine Tripolar Cables

Efficient PEEC Computation of Losses and Currents in Screens of Round Wires in Submarine Tripolar Cables

Integral Formulation for Losses Computation in Tripolar Submarine Cables With Shield Wires, Moisture Barriers, and Armor

Use of 3D-FEM Tools to Improve Loss Allocation in Three-Core Armored Cables

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