الملخص
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.
الكلمات المفتاحية
بيانات النشر
- المعرّف الرقمي
- 10.24200/tjer.vol15iss2pp163-174
- المجلة
- المجلة العُمانية للبحوث الهندسية, 15(2), 163
- الناشر
- جامعة السلطان قابوس
- وصول مفتوح
- وصول مفتوح ذهبي
- الترخيص
- CC BY 4.0
اقتبس هذه المقالة
APA 7
Eladawy, M., & Metwally, I. A. (2018). Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions. The Journal of Engineering Research, 15(2), 163. https://doi.org/10.24200/tjer.vol15iss2pp163-174
MLA 9
Eladawy, Mohamme, and Ibrahim A. Metwally. "Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions." The Journal of Engineering Research, vol. 15, no. 2, 2018, pp. 163. https://doi.org/10.24200/tjer.vol15iss2pp163-174.
شيكاغو (المؤلف–التاريخ)
Eladawy, Mohamme, and Ibrahim A. Metwally. 2018. "Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions." The Journal of Engineering Research 15 (2): 163. https://doi.org/10.24200/tjer.vol15iss2pp163-174.
هارفارد
Eladawy, M. and Metwally, I. A. (2018) 'Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions', The Journal of Engineering Research, 15(2), pp. 163. doi:10.24200/tjer.vol15iss2pp163-174.
فانكوفر
Eladawy M, Metwally IA. Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions. The Journal of Engineering Research. 2018;15(2):163. doi:10.24200/tjer.vol15iss2pp163-174
IEEE
M. Eladawy, and I. A. Metwally, "Electromagnetic Heating Effects in Power Distribution Cables under Different Operating Conditions," The Journal of Engineering Research, vol. 15, no. 2, pp. 163, 2018, doi: 10.24200/tjer.vol15iss2pp163-174.