Active shielding of overhead line magnetic field: Design and applications

Barsali, Stefano; Giglioli, Romano; Poli, Davide

doi:10.1016/j.epsr.2014.01.005

Cited by 21 publications

(19 citation statements)

References 8 publications

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“…In active loops, the currents are supplied by external sources that monitor the magnetic field on some target points and generate a suitable current that counteracts the source field. This technique has been shown to be attractive not only in proximity of overhead lines [17] but also in other industrial applications [18], [19].…”

Section: Passive and Active Compensationmentioning

confidence: 99%

Magnetic Field Mitigation at Power Frequency: Design Principles and Case Studies

Bavastro

Canova

Freschi

et al. 2015

IEEE Trans. on Ind. Applicat.

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The purpose of this paper is to analyze the main techniques for magnetic field mitigation at power frequency and assess their effectiveness presenting two real applications used as case studies. Some mitigation techniques presented in the literature are reviewed and discussed. The result of the preliminary numerical design is compared with results of measurements on real installations, showing that the available methods are mature instruments for the design of mitigation measures.

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Section: Passive and Active Compensationmentioning

confidence: 99%

Magnetic Field Mitigation at Power Frequency: Design Principles and Case Studies

Bavastro

Canova

Freschi

et al. 2015

IEEE Trans. on Ind. Applicat.

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show abstract

“…In active loops, the currents are supplied by external sources that monitor the magnetic field on some target points and generates a suitable current that counteracts the source field. This technique has been shown to be attractive not only in proximity of overhead lines [16] but also in other industrial applications [17].…”

Section: Passive and Active Compensationmentioning

confidence: 99%

Magnetic field mitigation at power frequency: Design principles and case studies

Bavastro

Canova

Freschi

et al. 2014

2014 IEEE Industry Application Society Annual Meeting

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The purpose of this article is to analyze the main techniques for magnetic field mitigation at power frequency and assess their effectiveness presenting two real application used as case studies. Some mitigation techniques presented in the literature are reviewed and discussed. The result of the preliminary numerical design is compared with results of measurements on real installations, showing that the available methods are mature instruments for the design of mitigation measures.

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“…Indeed, several techniques have been developed for the magnetic induction field mitigation, the majority of them with huge impacts on the mechanical structure and high costs. The most commonly studied and applied proposals are complex or largely impacting actions, for example: (i) increasing conductors height from ground-level, with consequent increase of the visual impact of the infrastructure; (ii) installing active shielding loops [11]; (iii) introducing passive loops [12,13]; (iv) splitting the conductors; and (v) rearranging the line wires. Rarely, less invasive methods are discussed [14].…”

Section: Introductionmentioning

confidence: 99%

Use of Rod Compactors for High Voltage Overhead Power Lines Magnetic Field Mitigation

et al. 2017

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Abstract:In the last decades, strengthening the high voltage transmission system through the installation of new overhead power lines has become critical, especially in highly developed areas. Present laws concerning the human exposure to electric and magnetic fields introduce constraints to be considered in both new line construction and existing systems. In the paper, a technique for passive magnetic field mitigation in areas close to overhead power lines is introduced, fully modelled and discussed through a parametric analysis. The investigated solution, which basically consists in approaching line conductors along the span making use of rod insulators, is applicable on both existing and under-design overhead lines as an alternative to other mitigating actions. Making use of a 3-dimensional representation, the procedure computes both positions of phase conductors and forces acting on insulators, towers, conductors and compactors, with the aim of evaluating the additional mechanical stress introduced by the compactors. Finally, a real case study is reported to demonstrate and quantify the benefits in terms of ground magnetic field reduction achievable by applying the proposed solution, in comparison to a traditional configuration. Furthermore, using compactors to passively reduce the magnetic field is simple to be applied, minimally invasive and quite inexpensive as regards to alternative mitigating actions.

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Active shielding of overhead line magnetic field: Design and applications

Cited by 21 publications

References 8 publications

Magnetic Field Mitigation at Power Frequency: Design Principles and Case Studies

Magnetic Field Mitigation at Power Frequency: Design Principles and Case Studies

Magnetic field mitigation at power frequency: Design principles and case studies

Use of Rod Compactors for High Voltage Overhead Power Lines Magnetic Field Mitigation

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