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The aim of this paper is to investigate the influence of nonlinear parameters (threshold field, low field conductivity and nonlinearity coefficient) on the performance of a cable termination equipped with… Click to show full abstract
The aim of this paper is to investigate the influence of nonlinear parameters (threshold field, low field conductivity and nonlinearity coefficient) on the performance of a cable termination equipped with a resistive field grading tube at 50 Hz and impulse voltage. The electrical field distribution over the insulator silicone housing surface was computed and analyzed using a finite element software (Flux 2D). Comparative studies between linear field grading (εr = 2.9 and 16) and nonlinear resistive field grading (12 < εr < 19) show that better effectiveness is achieved with a low threshold field and a high permittivity under 50 Hz and a high nonlinearity coefficient under impulse voltage.
Journal Title: IEEE Transactions on Dielectrics and Electrical Insulation
Year Published: 2018
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