Anti-corona ring capable of preventing electro-corrosion of optical cable and installation method of anti-corona ring

Abstract

The invention relates to an anti-corona ring capable of preventing electric corrosion of an optical cable and an installation method of the anti-corona ring, and belongs to the technical field of power equipment. The anti-corona ring comprises two anti-corona ring bodies of the same structure, the two anti-corona ring bodies are located at the two ends of an ADSS optical cable respectively, each anti-corona ring body is a clamping section formed by spirally bending an aluminum alloy strip, the tail end of the clamping section 1 continues to be spirally bent to form an anti-corona section, the inner diameter of the clamping section is smaller than that of the anti-corona section, the clamping section is wound on a pre-twisted wire at an outlet of an ADSS optical cable fitting, the anti-corona section is arranged outside the ADSS optical cable close to the pre-twisted wire in a sleeving way, and the anti-corona section is non-contact with the ADSS optical cable. According to the invention, electro-corrosion at the outlet of the ADSS optical cable fitting can be effectively prevented.

Description

technical field [0001] The invention relates to an anti-corona ring capable of preventing electrical corrosion of optical cables and an installation method thereof, belonging to the technical field of electric equipment. Background technique [0002] In recent years, during the actual operation of the ADSS optical cable erected on the same tower as the high-voltage transmission line, accidents of cable breakage due to electrical corrosion have become more and more frequent. Location of electrical corrosion: at the outlet of ADSS optical cable fittings erected on the same pole as the high-voltage overhead transmission line. Especially for double-circuit lines above 110kV on the same tower, tip discharges are prone to occur at the exit of optical cable fittings. Under the action of a strong electric field, places with large surface curvatures (such as the tops of sharp and small objects) have dense equipotential surfaces and electric fields The intensity increased sharply, ca...

AI Technical Summary

Problems solved by technology

ADSS optical cable generates induced electromotive force in a strong electromagnetic field environment, especially the induced electromotive force near the outlet of the optical cable fittings changes sharply, causing discharge at the end of the optical cable fittings, thereby corroding the surface sheath of the ADSS optical cable, resulting in cable breakage accidents

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