Insulator capable of reducing lightning stroke flashover accidents

Abstract

Provided is an insulator capable of reducing lightning stroke flashover accidents. At least one lower bar-shaped electrode system is arranged at the lower electrode of the insulator, at least one upper bar-shaped electrode system is arranged at the upper electrode of the insulator, the electrode of the lower bar-shaped electrode system and the electrode of the upper bar-shaped electrode system are made of metal or conductive composites, the conductive composites are conductive rubber or conductive plastics, semiconductor layers or insulating material layers are arranged outside the lower bar-shaped electrode system and the upper bar-shaped electrode system respectively, the axial depth of the lower bar-shaped electrode system along the insulator is larger than the axial depth of a lower grading ring at the grounding side, and the axial depth of the upper bar-shaped electrode system is larger than the axial depth of an upper grading ring at the high-voltage side. By utilizing the electrode parts of the novel electrode systems, the density of power lines at the lower grading ring and the upper grading ring is reduced, the electric field near the lower grading ring and the upper grading ring is weakened, and the flashover voltage of the insulator is improved. The electric field is adjusted by utilizing the semiconductor layers or insulating material layers outside the electrode systems, and the lightning stroke flashover accidents of the insulator are further reduced.

Description

[0001] Technical field [0002] The invention involves an insulator who can reduce the lightning of lightning and flashes, which is the technology field of high -pressure insulation devices. Background technique [0003] The power system is composed of three parts: the generation of electrical energy, the transportation of the electrical energy, and the use of electrical energy.The conveying of electrical energy requires a whole set of equipment. This set of equipment mainly includes transmission lines, rods, insulators, and transformers. The insulator is used to fix the transmission line and enable it to maintain a certain insulation distance to the earth.The insulator can be divided into three main forms according to the purpose: line insulator, pillar insulator and sleeve insulator. [0004] Lightning strike is one of the important factors affecting the safe and stable operation of the power grid.From the perspective of the lightning protection object of the power system, it c...

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Problems solved by technology

[0007] However, all the lightning protection methods mentioned above do not start from the study of the insulation level of the insulator itself to properly strengthen the line insulation

Although in the traditional lightning protection methods, there are also means of strengthening line insulation, but they are all by increasing the number of insulator strings or increasing the length of insulators, and using insulating cross-arms, etc., and the insulation level of the insulator itself has not been carefully considered. ground research

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