MAGNETIC FIELD SHIELDING OF UNDERGROUND CABLE DUCT BANKS

• DOI: 10.2528/pier13011710
• Publication Date: 2014-01-13T09:22:00Z
• Authors: Juan Carlos del P...; Pedro Cruz-Romero
• Keywords: 0211 other engineering and technologies; 02 engineering and technology; 7. Clean energy

In this paper an in-depth parametric analysis of shielding effectiveness obtained when using ferromagnetic or conductive screens to mitigate the field generated by duct banks is presented.Due need a case-by-case approach, all simulations, performed finite element software (GetDp), are applied case study composed 9 (3 × 3) ducts, with six them including high voltage single-core cables and three left empty for eventual future expansion.Two geometries tested: horizontal U-reverse, changing in each one main parameters: width, thickness, clearance conductors, etc.Moreover, conductors grouped two balanced in-phase three-phase circuits arranged configurations: vertical, triangular.The mutual phase ordering both that minimizes field, so no further reduction can be simple methods.The power losses cost different solutions also presented, effect adding third circuit if required.