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Working temperature calculation of single-core cable by nonlinear finite element method

Meng Xiaokai, Han Peijie, Liu Yongxin, Lu Zhumao, Jin Tao

Archives of Electrical Engineering

2019

Vol. 68, nr 3

643--656

By simulating the actual working conditions of a cable, the temperature variation rule of different measuring points under different load currents was analyzed. On this basis, a three-dimensional finite element model (FEM) was established, and the difference and influence factors between the simulation temperature and the experimental measured value were discussed, then the influence of thermal conductivity on the operating temperature of the conductor layer was studied. Finally, combined with the steady-state thermal conductivity model and the experimental measured data, the relation between thermal conductivity and load current was obtained.