Electromagnetic interference at power frequencies: shielding factor related to an urban environment

Lucca, Giovanni

doi:10.1049/iet-smt.2016.0016

Cited by 3 publications

(2 citation statements)

References 6 publications

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“…Generally, most cable manufacturers take the relative permeability of 300 (Moore 1997;SAOG). The larger relative permeability of steel armour is, the lower magnetic field outside the cable (Lucca 2016). In addition, the larger the relative permeability of steel armour, the larger is the induced current density due to high intensification of magnetic field inside the highly permeable material and consequently reducing it in the neighbouring regions.…”

Section: Relative Permeability Of Armour Layermentioning

confidence: 99%

Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions

Eladawy

Metwally

2018

Jou. Eng. Res.

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This paper presents a finite element simulation by COMSOL Multiphysics package to investigate the temperature distribution inside three-phase, three-core, 33 kV underground power cables (UGC) through a coupled electromagnetic-thermal modelling. The simulations are very controlled and fine realistic details can be added to the model such as the temperature conductivity dependence of any metallic layer and armour permeability. Distributions of magnetic field, current density, resistive losses and temperature inside UGC different layers are calculated at different operating conditions. The exponential increase in conductor temperature with increasing the conductor current limits the single-phasing operation of such cables. Therefore, they must be derated, otherwise their lifetime will be reduced exponentially. Finally, the effect of current harmonics on the temperature distribution inside the insulation material and hence its lifetime is calculated using MATLAB. It is found that higher steady-state conductor temperatures are expected for cables with larger conductor cross-sectional areas, using aluminium core rather than copper, or using 6-pulse rectifiers rather than a higher pulse types.

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Section: Relative Permeability Of Armour Layermentioning

confidence: 99%

Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions

Eladawy

Metwally

2018

Jou. Eng. Res.

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show abstract

“…On the other hand, the adverse effects of the magnetic field produced by the underground transmission lines on the human health and electromagnetic interface with electronic devices are taken into consideration in recent years. Mitigation of magnetic field can be achieved by using ferromagnetic shields and phase ordering of the cables which is more convenience than the other [1,2]. Moreover, all of the parameters can be affected by grounding system.…”

Section: Introductionmentioning

confidence: 99%

Effects of non‐sinusoidal current on current division, ampacity and magnetic field of parallel power cables

Rasoulpoor

Mirzaie

Mirimani

2017

IET Science, Measurement & Technology

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Trajectory optimization for exposure to minimal electromagnetic pollution using genetic algorithms approach: A case study

Gallego-Martínez

Muñoz-Gutiérrez

Rodríguez-Gómez

2022

Expert Systems with Applications

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Electromagnetic interference at power frequencies: shielding factor related to an urban environment

Cited by 3 publications

References 6 publications

Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions

Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions

Effects of non‐sinusoidal current on current division, ampacity and magnetic field of parallel power cables

Trajectory optimization for exposure to minimal electromagnetic pollution using genetic algorithms approach: A case study

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