|DETERMINATION OF TEMPERATURE DISTRIBUTION IN OVAL THREE-PHASE SHIELDED HEAVY CURRENT LINES|
The work presents an algorithm of electrodynamical (heat) calculation related to heavy-current lines operating in a cylindrical symmetric arrangement. Distribution of current density occurring in the phase conductors and induced in the shield was determined with the help of the method of integral equations. Knowledge of the current density distribution enabled calculating of active power losses in the system and, afterwards, the distribution of conductor and shield temperatures. Results of heat calculation are presented and compared with the values measured in a real physical system.
|Key Words:||shielded heavy current lines, power busways, method of integral equations, temperature distribution, active power losses, distribution of current density|