| Title |
FEM-based quantification of eddy-current losses for MV cables in trefoil formation with non-magnetic screens |
| Authors |
Šućurović, Marko ; Klimenta, Dardan ; Hinov, Nikolay ; Tasić, Dragan ; Banjanin, Mladen ; Andriukaitis, Darius |
| DOI |
10.1109/ACCESS.2026.3678088 |
| Full Text |
|
| Is Part of |
IEEE Access.. Piscataway, NJ : IEEE. 2026, vol. 14, p. 47241-47258.. ISSN 2169-3536 |
| Keywords [eng] |
Circulating-current loss factor, eddy-current loss factor ; finite element method (FEM) ; screen bonding design ; single-core power cable ; trefoil formation |
| Abstract [eng] |
Circulating- and eddy-current losses occur in non-magnetic screens and armors of three medium-voltage (MV) single-core cables installed in trefoil formation, where they are bonded and earthed at both ends. According to IEC 60287-1-1, eddy-current losses in non-magnetic screens and armors should be neglected, whereas the technical brochure CIGRÉ TB 880 recommends that these losses should always be taken into account. For the considered screen bonding design, a reliable quantitative separation of circulating- and eddy-current losses is therefore essential. Such a separation cannot be performed accurately while simultaneously using experimental methods alone, but it can be achieved through a combination of analytical modeling and finite element method (FEM)-based electro–magneto–thermal simulations. This paper proposes and applies a new hybrid FEM-based procedure for the quantitative determination of circulating- and eddy-current losses inMVcables. The method is applied to Cu/XLPE/CTS/PVC/AWA/PVC 1/C 19/33 kV (BS 6622) cables with twelve different conductor cross-sections. The accuracy of the proposed procedure is verified by comparisons with IEC-based analytical calculations that account for eddy-current losses in accordance with the technical brochures CIGRÉ TB 272 and CIGRÉ TB 880. The FEM-based electro–magneto–thermal models are calibrated and validated using experimental data already published for PL 1 × 300 RM 6/10 kV cables. The developed calibration strategy represents another novelty. The results demonstrated that, for the BS 6622 cables with conductor cross-sections ranging from 70 to 1000 mm2, the screen and armor eddy-current loss factors lie within the ranges 0.00094–0.03625 and 0.00719–0.1951, respectively. The deviations between the FEM- and IEC-based eddy-current loss factors range from−6.398% to 5.302%, demonstrating a very good agreement. |
| Published |
Piscataway, NJ : IEEE |
| Type |
Journal article |
| Language |
English |
| Publication date |
2026 |
| CC license |
|
