Electromagnetic and thermal analysis of underground power solid‐conductor cables under harmonic and unbalancing currents based on FEM

Rasoulpoor, M.; Mirzaie, Mohammad; Mirimani, Seyyed Mehdi

doi:10.1002/jnm.2278

Cited by 6 publications

(3 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, in the study of Al-Saud [13], the FEM-PSO method was used to optimize the three-core cable cross-sections, and the optimum dimensions were obtained. Rasoulpoor et al [14] had studied the heat transfer characteristics for buried cables with unbalanced current by using FEM method. In their study, the heat source produced by the cable was coupled and it was found that the cables arranged in parallel form would have longer working life.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of Convection and Radiation Heat Transfer in Pipe Cable

Quan

et al. 2018

Mathematical Problems in Engineering

View full text Add to dashboard Cite

Pipe cable is considered as an important form for underground transmission line. The maximum electrical current (ampacity) of power cable system mostly depends on the cable conductor temperature. Therefore, accurate calculation of temperature distribution in the power cable system is quite important to extract the cable ampacity. In the present paper, the fluid flow and heat transfer characteristics in the pipe cable with alternating current were numerically studied by using commercial code COMSOL MULTIPHYSICS based on finite element method (FEM). The cable core loss and eddy current loss in the cable were coupled for the heat transfer simulation, and the difference of heat transfer performances with pure natural convection model and radiationconvection model was compared and analysed in detail. Meanwhile, for the radiation-convection model, the effects caused by radiant emissivity of cable surface and pipe inner surface, as well as the cable location in the pipe, were also discussed. Firstly, it is revealed that the radiation and natural convection heat flux on the cable surface would be of the same order of magnitude, and the radiation heat transfer on the cable surface should not be ignored. Otherwise, the cable ampacity would be underestimated. Secondly, it is found that the overall heat transfer rate on the cable surface increases as the cable surface emissivity increases, and this is more remarkable to the upper cable. While the effect caused by the radiant emissivity on the pipe inner surface would be relatively small. Furthermore, it is demonstrated that, as cable location in the pipe falls, the natural convection heat transfer would be enhanced. These results would be meaningful for the ampacity prediction and optimum design for the pipe cable.

show abstract

Section: Introductionmentioning

confidence: 99%

Numerical Study of Convection and Radiation Heat Transfer in Pipe Cable

Quan

et al. 2018

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…The second application is for a circular cross-section of a high voltage insulated steel armoured electrical cable. The steel armour, that is used to provide sustenance for the high voltage electrical cables to endure mechanical stress as they are buried underground, also traps electromagnetic disturbances occurring inside the cable due to current imbalances and material defects [51]. The solution of the wave equation inside these geometries provides the distribution of the electromagnetic energy within the material, which then could be coupled with the diffusion equation to analyse various thermal properties [52,53].…”

Section: Example Of Resonant Cavitymentioning

confidence: 99%

Explicit time integration with lumped mass matrix for enriched finite elements solution of time domain wave problems

Drolia

Mohamed

Laghrouche

et al. 2020

Applied Mathematical Modelling

View full text Add to dashboard Cite

show abstract

“…The one-dimensional (1D) network was adopted for the cable temperature estimation [11][12][13], whereas in the case of cable joint, a 2D RC analogue was normally chosen with the subdivision of the joint into a number of elemental cylindrical volumes, and the effectiveness of the thermal network was validated by the temperature-rise test [14,15]. With the improvement of mesh generation and post-processing capabilities, FEM has been widely used in the thermophysics and heat engineering [16][17][18][19][20]. By using transient FEM for thermal analysis, the hot spot temperature rise of 110 kV cable joint has been calculated within an acceptable error range [21].…”

Section: Introductionmentioning

confidence: 99%