The influence of the inclination angle of the catenary arm insulator umbrella on the electric field distribution

In order to study the influence of the insulation structure on the electric field distribution of the catenary cantilever insulator, the three-dimensional drawing software Solidworks and the finite element software COMSOL were combined to simulate and analyze the influence of the shed interleaved arrangement and the shed inclination on the electric field distribution of the insulator. The simulation results show that: when the sheds are arranged alternately, they have a certain influence on the maximum field strength near the high-voltage end fittings of the insulator. When the sheds are arranged with one large and one small interleaved arrangement, the electric field near the high-voltage end fittings is the smallest. The electric field near the high-voltage end fittings is the largest when the large and the small are arranged; Comparing the electric field distribution of the insulator when the inclination angle of the umbrella skirt is 2°, 9° and 16°, it is found that the maximum field strength near the high-voltage end fittings of the arm insulator has the largest drop when the inclination angle is 16°. The research results in this paper can provide a basis for the optimization of the catenary cantilever insulator structure.