Method for calculating three-dimensional electric field intensity of surface of grading ring and surrounding space thereof

Abstract

The invention discloses a method for calculating the three-dimensional electric field intensity of the surface of a grading ring and the surrounding space of the grading ring, and the method comprises the steps: S1), setting an annular simulation charge in the grading ring, and setting a potential matching point and a verification point on the surface of the grading ring; S2) solving the three-dimensional coordinates of the annular simulation charge, the matching point and the verification point; S3) solving a calculation expression of the annular simulation charge potential coefficient and the electric field intensity coefficient; S4) establishing an annular simulation charge equation set, and solving the charge quantity of the annular simulation charge; S5) verifying the simulation precision of the annular simulation charge; and S6) solving the three-dimensional electric field intensity of the surface and the surrounding space of the grading ring. According to the method for calculating the three-dimensional electric field intensity of the surface and the surrounding space of the grading ring, the three-dimensional electric field intensity of the surface and the surrounding space of the grading ring is obtained through the annular simulation charges, and the method has the advantages of being high in simulation precision and small in calculation amount.

Description

technical field [0001] The invention relates to the technical field of numerical calculation of electromagnetic fields, in particular to a method for calculating the three-dimensional electric field intensity on the surface of a pressure equalizing ring and its surrounding space. Background technique [0002] In recent years, with the increase of voltage level, the problems of corona and its electromagnetic environment have become increasingly prominent, and have become one of the key technical problems in the design of UHV power transmission and transformation projects. As an indispensable component in power transmission and transformation projects, the voltage equalizing ring has no shielding effect of other hardware and wires, so the corona discharge phenomenon on its surface is very serious. Therefore, in order to suppress the corona discharge phenomenon on the surface of the grading ring, it is necessary to solve and analyze the electric field intensity distribution on ...

AI Technical Summary

Problems solved by technology

At present, the finite element method is used to solve the three-dimensional electric field intensity distribution on the surface of the equalizing ring and its surroundings, and there is no related research using the simulated charge method.

[0004] Compared with ring-shaped simulated charges, point charges and line charges are most widely used in the simulated charge method, and theoretical calculation and analysis are more mature. The calculation of the electric field distribution around it is large and the calculation speed is slow. Therefore, it is necessary to establish a calculation method for calculating the three-dimensional electric field intensity on the surface of the equalizing ring and its surrounding space by using the ring-shaped analog charge.

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