Insulators that can reduce corona loss and electromagnetic wave interference and improve the corrosion resistance of metal fittings

Abstract

The invention relates to an insulator capable of reducing corona loss and electromagnetic wave interference and improving anticorrosion capability of hardware fittings. The insulator is characterized in that a steel leg accessory system and / or an iron cap accessory system are / is arranged at a steel leg and / or an iron cap of a porcelain or glass plate shaped suspension type insulator, a high voltage ring accessory system is arranged on a grading ring on a high voltage side, a grounding ring accessory system is arranged on a grading ring on a grounding side, the inner layer conducting parts of the steel leg accessory system, the iron cap accessory system, the high voltage ring accessory system and the grounding ring accessory system are contacted with the steel leg, the iron cap, the grading ring on the high voltage side and the grading ring on the grounding side, outer layer insulation parts are closely contacted with the inner layer conducting parts, and conducting rings are arranged on the inner sides and the upper sides of the steel leg accessory system and the iron cap accessory system. According to the insulator, the conducting parts of the insulator are isolated from outside air, so that the possibility of generating corona discharge is eliminated; when exposed parts are subjected to corona discharge, charges of the corona discharge can be attracted, and the corona starting voltage can be improved. The insulator has the advantages that leakage current can be reduced, corrosion of the steel leg, the iron cap and the grading rings can be reduced, the pollution flashover voltage can be improved, and the operation reliability of the insulator can be improved.

Description

technical field [0001] The invention relates to an insulator used in a power system, in particular to an insulator capable of reducing corona loss and electromagnetic wave interference and improving the corrosion resistance of metal fittings. Background technique [0002] During the operation of an insulator, the electric field around its electrodes is extremely uneven. Before the air gap between the electrodes is completely broken down, near the electrodes of the insulator, especially near the electrodes with a small radius of curvature, due to the local The electric field strength exceeds the ionization field strength of the gas, so that the gas is ionized, thus corona discharge occurs. Corona discharge emits a blue halo accompanied by a hissing sound, which increases the temperature of the surrounding air. Corona discharge has the following problems: it will generate high-frequency pulse current, which will interfere with radio communication; it will cause chemical react...

AI Technical Summary

Problems solved by technology

Corona discharge has the following problems: it will generate high-frequency pulse current, which will interfere with radio communication; it will cause chemical reactions in the air to generate strong oxidants and corrosive agents such as ozone, which will damage or corrode the insulation performance of insulators and metal fittings; consume energy

[0008] During the operation, it was also found that the grading ring of the insulator is also often corroded

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