Self-arc-extinguishing anti-contamination anti-icing-flashover insulator

Abstract

The invention discloses a self-arc-extinguishing anti-contamination anti-icing-flashover insulator. The insulator comprises an insulating body (3) and arc-extinguishing pipes (7), wherein one end of the insulating body (3) is fixedly installed on a cross arm (4), and the other end of the insulating body (3) is fixedly connected with an overhead conductor (1); a plurality of U-shaped or V-shaped arc-distinguishing pipelines (5) are arranged in the insulating body (3); the arc-extinguishing pipes (7) are fixedly installed in the arc-distinguishing pipelines (5), and the ends of the arc-extinguishing pipes (7) are sequentially connected in series; on the side close to the overhead conductor (1), the head end of the first arc-extinguishing pipe (7) in the insulating body (3) is connected with the overhead conductor (1) through a wire I (2); on the side close to the cross arm (4), the tail end of the last arc-extinguishing pipe (7) in the insulating body (3) is connected with the cross arm (4) through a wire II (6). The insulator is simple in structure, safe, reliable, low in maintenance cost and capable of not only performing arc extinguishing but also removing contamination and frost.

Description

technical field [0001] The invention belongs to power transmission equipment and relates to an insulator, in particular to an insulator capable of automatic arc extinguishing and anti-pollution and lightning protection. Background technique [0002] Insulators are necessary on high-voltage and ultra-high-voltage power transmission lines. Their function is to separate conductors with different potentials and prevent current from passing between conductors to maintain different potentials between them. Insulators are generally made of insulating materials with extremely high resistance. This material can be used to isolate charged or different potential conductors, so that current can flow in a certain direction. According to different insulating materials, insulators can be divided into three categories: porcelain insulators, glass insulators and composite insulators. At the earliest, there were only porcelain and glass insulators. The overall mechanical and electrical prope...

AI Technical Summary

Problems solved by technology

Although the addition of a parallel arc extinguishing device solves the problem of lightning flashover, the number of arc extinguishing is limited, and regular maintenance is required, which increases the operating cost of the transmission line, and the arc extinguishing device increases the cost of the transmission line. Due to its own weight, it is necessary to further enhance the load-bearing capacity of the tower

In addition, since the insulator is exposed to the air for a long time, dirt will accumulate over time, and in cold regions, frost will condense on the surface of the insulator. Both dirt and frost will greatly affect its insulation performance, and the usual treatment methods are Manual cleaning, removal or replacement, which requires huge maintenance costs

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