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PIER PIER B PIER C PIER M PIER Letters
2013-01-02
Impact of Electromagnetic Losses in Closed Two-Component Magnetic Shields on the Ampacity of Underground Power Cables
By
Juan Carlos del Pino-Lopez,

    Dr. Juan Carlos del Pino-Lopez

    Department of Electrical Engineering,Camino de los Descubrimientos s/n

    University of Seville

    Spain

    Homepage

Pedro Cruz-Romero,

    Dr. Pedro Cruz-Romero

    Department of Electrical Engineering

    University of Seville

    Spain

    Homepage

Luis Serrano-Iribarnegaray

    Dr. Luis Serrano-Iribarnegaray

    Univ Politecn Valencia

    Spain

    Homepage

Progress In Electromagnetics Research, Vol. 135, 601-625, 2013
doi:10.2528/PIER12112303
Abstract
In this paper two typical arrangements of underground single-core high voltage three-phase power cables (flat and trefoil protected by PVC pipes) inside a closed shield of three different materials (low-carbon steel, non-oriented grain steel and aluminium) are analysed. The shield has two components: a U-shaped base and a flat plate (cover) located on top of the base. Whereas most of previous papers on this subject only dealt with the degree of mitigation obtained with each material, this paper, in addition to also addressing this issue, mainly focusses on the effect that electromagnetic losses induced in the shield have on the ampacity of the cable and the cost involved (material and losses). To obtain the numerical results, a high number of simulations by a well-known commercial finite element method software (COMSOL Multiphysics) have been performed. The results obtained in the numerous cases analysed are widely commented and the solutions that enable an important mitigation with no current derating and at a comparatively low cost are highlighted.
Citation
Juan Carlos del Pino-Lopez, Pedro Cruz-Romero, and Luis Serrano-Iribarnegaray, "Impact of Electromagnetic Losses in Closed Two-Component Magnetic Shields on the Ampacity of Underground Power Cables," Progress In Electromagnetics Research, Vol. 135, 601-625, 2013.
doi:10.2528/PIER12112303
References

1. Maioli, , P., E. Borghi, F. Donazzi, and S. Belli, "Method for shielding the magnetic field generated by an electrical power transmission line and electrical power transmission line so shielded," Patent, International Publication Number: WO2005/013450 A1, Feb. 2005, Feb. 2005.

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