Abstract:

As an important equipment for power transmission and distribution systems,  cables have on affection on electric capacity and transmission reliability of cities. A large number of complicated parameters determine the current carrying capacity of the cable. There will be large error in determining the current carrying capacity of cable solely according to the IEC 60287-2-1—2015 Electric CablesCalculation of  the Currrent Rating standard, which cannot meet the actual needs. Finite element method is used to obtain the current carrying capacity of the cable. The correctness and effectiveness of the method are verified by COMSOL software and simulation tests. Suggestions that benefit for the cable laying and cable current carrying capacity improvement are given.Meanwhile, it is proved that this method has practical significance for the safe and economic operation of power cables.

Key words:

power cable, finite element method, current carrying capacity, COMSOL software