A lightning-proof and ice-proof insulator

Abstract

The invention discloses a lightning protection and anti-icing insulator, which comprises two lightning arresters and a sub-insulator. The lightning arrester and the sub-insulator are connected into a Y-shaped overall structure through connecting plate fittings, and a sub-insulator located at the lower end of the Y-shaped overall structure is provided with a Arc angle. The invention can simultaneously realize the functions of lightning protection and anti-ice flashing, and is easy to meet the structural size requirements of the original tower window, without affecting the wind deflection, lightning protection and other performances of the line, and does not affect the insulation performance after lightning discharge, and the insulator has high insulation strength and long service life Long, easy to install, no need to change the tower structure, thus saving investment and reducing maintenance costs.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to an insulator with the function of lightning protection and ice flash protection, which is suitable for high-voltage transmission lines in areas prone to ice disasters and thunderstorms. Background technique [0002] In recent years, with the rapid development of my country's social economy and power construction, more high-voltage transmission lines have been erected in some alpine mountainous areas with complex terrain and cold climate. In these areas with special geographical environment, when there is severe weather, the transmission line is prone to icing flashover or lightning flashover and trip accidents, which seriously affect the safe and stable operation of transmission line power transmission and power grid. [0003] At present, for icing flashover, there are methods of increasing umbrella diameter and spacing, and enriching the umbrella structure of comp...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to solve the shortcomings of existing composite insulators, such as the poor lightning protection performance and the inability of line arresters to undertake the function of line insulators. Sectional discharge is also easy to damage the surface insulation performance of insulators, and the increase in length affects the wind deflection of the line and lightning protection performance. Wind deflection, lightning protection and other performance of the line, lightning discharge does not affect the insulation performance, the arrester has strong flow capacity, long life, easy installation, no need to change the structure of the tower, thereby saving investment and reducing maintenance costs Lightning and anti-ice insulator

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