Articles techniques et présentations

A 2D model of coupled electricthermal application is used to calculate the temperature distribution in a high voltage dummy cable laid in free air, where no high voltage is applied. Resistive loss heats the cable while the surrounding air cools it down. The steady-state condition is reached when heat balances. The steady-state temperature depends not only on the resistive loss but also on the cooling of the surrounding air. The heat transfer between cable and surrounding air is simulated by using a semi-empirical heat transfer coefficient. Skin effect of Alternating Current (AC) is included in calculating the resistive loss. The simulation results from COMSOL are compared with experimental data.