Composite insulator with functions of thunder prevention and icing flashover prevention

Abstract

The invention discloses a composite insulator with functions of thunder prevention and icing flashover prevention. The composite insulator comprises a lightning arrester and two sub-insulators, wherein the lightning arrester and the sub-insulators are connected to form an inverted Y-shaped integral structure through a connecting plate fitting, and arcing horns are arranged on the two sub-insulators located at the lower end of the inverted Y-shaped integral structure. The composite insulator can integrate the functions of thunder prevention and icing flashover prevention and is likely to meet the dimensional requirement of an original tower window structure, properties such as windage yaw, thunder prevention and the like of a circuit are not influenced, the insulating property is not influenced after lightning discharge, the insulator is high in insulating strength and long in service life, only one suspension point is required to be arranged on a tower, the installation is simple and convenient, and the tower structure is not required to be changed, so that the investment is saved and the maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of electrical engineering, in particular to a composite 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 structur...

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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 and lightning protection performance of the line. A two-in-one that can realize lightning protection and anti-ice flashing functions is proposed, and it is easy to meet the structural size requirements of the original tower window , does not affect the wind deflection, lightning protection and other performance of the line, does not affect the insulation performance after lightning discharge, the insulator has high dielectric strength and long life, only one hanging point on the tower, easy installation, no need to change the structure of the tower, thus saving investment, Composite insulator for lightning protection and anti-ice flashing with reduced maintenance cost

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