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Study of the Influence of Underground Power Line Shielding Techniques on Its Power Capability

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Abstract

There are important concerns about the problems caused by high values of low-frequency magnetic field in urban centers. Two of them have received particular attention: the electromagnetic interference in sensitive equipment and the potential adverse health effects on human beings. In this way, many solutions to mitigate the magnetic field generated by these lines have been proposed. In this context, this work presents several computational results about the effectiveness of the main forms to reduce the magnetic field generated by underground power cables. The analysis addresses not only the field attenuation levels, but also the impact on the rated current due to the presence of shielding devices. From these results, it is possible to choose the best shielding arrangement for each specific situation, in order to achieve the required attenuation levels with the least ampacity loss. The thermal-magnetic model was implemented in the (free) software FEMM 4.2, which employs the finite element method.

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Authors and Affiliations

  1. Federal University of São João del Rei–UFSJ, 36307-352, São João del Rei, Brazil

    Marco Túlio A. Êvo

  2. Federal University of Minas Gerais–UFMG, 31270-901, Belo Horizonte, Brazil

    Hélder de Paula, Ivan José S. Lopes, Renato C. Mesquita & Diogo S. C. Souza

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  1. Marco Túlio A. Êvo
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  2. Hélder de Paula
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  3. Ivan José S. Lopes
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  4. Renato C. Mesquita
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  5. Diogo S. C. Souza
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Correspondence to Marco Túlio A. Êvo.

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Êvo, M.T.A., de Paula, H., Lopes, I.J.S. et al. Study of the Influence of Underground Power Line Shielding Techniques on Its Power Capability. J Control Autom Electr Syst 28, 541–551 (2017). https://doi.org/10.1007/s40313-017-0319-x

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  • DOI: https://doi.org/10.1007/s40313-017-0319-x

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