In the entire power system operation, the cable is an essential and important component. However, the internal structure of the cable joint is complex and the material has diverse characteristics, which can easily lead to electric field distortion and power failure. Based on this, in order to reduce the occurrence of such problems and improve the safety of cable operation, this paper calculates and analyzes the stress cone parameters of the main insulation layer of a 10 kV cable, and optimizes its structural electric field. Specifically, the formulas of stress cone, reaction force cone, and thickness of the wound-insulating layer are designed, and the parameters are calculated. The results show that the maximum radius Rm of enhanced insulation is 28 mm, the thickness ΔR of enhanced insulation of the cable terminal is 13 mm, etc. The appropriate optimization parameters are then selected, and the electric fields of the shielded pipe structure, stress cone structure, and accessory body are optimized, and a reasonable optimization approach is given.
Cite this article as: J. Wu, J. Xu, W. Qin, J. Wang and M. Wu, “Parameter calculation and structural electric field optimization of stress cone for main insulation layer of a 10 kV cable,” Electrica., 22(2), 287-294, 2022.