Magnetic field management techniques in transmission underground cables

Dawoud, M.M.; Habiballah, I.O.; Farag, A.S.; Firoz, A.

doi:10.1016/s0378-7796(98)00107-2

Cited by 19 publications

(9 citation statements)

References 8 publications

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“…A good design includes a proper layout in order to obtain electrical installations with a low stray magnetic field. A naïve consideration is to place phase conductors as close as possible, in order to minimize the cross section Focusing the attention to three-phase lines made of multiple parallel conductors per phase, it is known that a correct sequence is needed for minimizing the stray field [10], [11]. As a side effect, layouts that show minimum stray magnetic field are also characterized by balanced current sharing between the parallel conductors [12].…”

Section: A Proper Source Layoutmentioning

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: A Proper Source Layoutmentioning

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

“…A good design includes a proper layout in order to obtain electrical installations with low stray magnetic field. A naïve consideration is to place phase conductors as close as possible, in order to minimize the cross section Focusing the attention to three phase lines made of multiple parallel conductors per phase, it is known that a correct sequence is needed for minimizing the stray field [10], [11]. As a side effect, layouts that show minimum stray magnetic field are also characterized by balanced current sharing between the parallel conductors [12].…”

Section: Mitigation Principles a Proper Source Layoutmentioning

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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“…A 132 kV double circuit line is considered to be installed in the duct bank, with phase conductors having a cross-section of 630 mm 2 and a current of 750 A (the three-phase currents in both circuits are in phase). Phase conductors can be placed following well known MF management techniques to reduce the MF in the area above the ground surface [3]. Bearing this in mind, three representative configurations have been selected for this study: vertical, horizontal and triangular formations (Fig.…”

Section: Case Studymentioning

confidence: 99%

“…In [3] three geometric configurations are considered (stack, horizontal and triangular), obtaining a highest MF ratio of 32.6 between the worst and better configurations. In [4] other conductor arrangements are considered, obtaining a highest MF ratio of 29.3.…”

Section: Introductionmentioning

confidence: 99%

Magnetic Field Shielding of Underground Cable Duct Banks

Romero¹,

Del-Pino-López²

2013

PIER

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

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Magnetic field management techniques in transmission underground cables

Cited by 19 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

Magnetic Field Shielding of Underground Cable Duct Banks

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