Abstract
With the upsurge of the digital twin power grid, it is very necessary to carry out a three-dimensional model and simulation analysis of the power grid system. Insulators are one of the important components in the power system, and the appropriate simplification of the simulation model is of great significance. In this paper, the finite element software is used to calculate the three-dimensional model, and the influence of the length of the conductor, the tower, the yoke plate, the grading ring, and the arrangement of the insulators on the axial electric field distribution (EFD) is analyzed. The results show that: the length of the conductor will affect the uniformity of the axial electric field; compared with the grading ring, the yoke plate will cause serious distortion of the electric field intensity curve; the integrity of the tower has different effects; the arrangement of the insulators will affect the magnitude of the electric field and even the shape of the curve. Therefore, in the simulation analysis of the axial electric field, the above factors should be considered when simplifying the insulator model, which will promote the development of relevant digital twin technology.
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