Title :
Heating of cables due to fault currents
Author :
Novák, Balázs ; Tamus, Zoltán Ádám ; Koller, László
Author_Institution :
Dept. of Electr. Power Eng., Budapest Univ. of Technol. & Econ., Budapest, Hungary
Abstract :
The metal screen of new type of medium and high voltage single-core underground cables is comprised of helically applied copper wires embedded in a semiconductive layer. The distribution of current and power among the thin wires is non-uniform in a three-phase system, what can lead to their non-uniform heating, especially during fault conditions. The paper investigates this problem with 2D finite element models. The simulations are based on the coupling of the electromagnetic and thermal fields.
Keywords :
fault currents; finite element analysis; underground cables; cable heating; copper wires; fault current; finite element model; nonuniform heating; semiconductive layer; voltage single core underground cable; Cables; Copper; Electromagnetic coupling; Electromagnetic fields; Fault currents; Finite element methods; Heating; Medium voltage; Power system modeling; Wires; fault current; finite element method; transient heating; underground cables;
Conference_Titel :
Electrical Insulation (ISEI), Conference Record of the 2010 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-6298-8
DOI :
10.1109/ELINSL.2010.5549812
