Electromagnetic heating effects in power distribution cables under different operating conditions

M. Eladawy*, I. A. Metwally

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


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.

Translated title of the contributionالتأثيرات الكهرومغناطيسية الحرارية في كابلات توزيع القدرة تحت ظروف التشغيل المختلفة
Original languageEnglish
Pages (from-to)63-74
Number of pages12
JournalJournal of Engineering Research
Issue number2
Publication statusPublished - 2018


  • Electromagnatic modelling
  • Heating
  • Power cables
  • تسخين
  • كابلات القوى
  • نمذجة كهرومغناطيسية

ASJC Scopus subject areas

  • General Engineering


Dive into the research topics of 'Electromagnetic heating effects in power distribution cables under different operating conditions'. Together they form a unique fingerprint.

Cite this