A self-adaptive anti-wind deflection device for suspension insulator strings

Abstract

The invention discloses a self-adaptive anti-wind deflection device for hanging insulator strings, which comprises an iron tower body and a cross arm arranged in the iron tower body. Insulator strings are suspended on both sides of the cross arm, and steel strands are passed between the two insulator strings. Connection, there is a support in the middle of the steel strand, the steel strand is always in tension, the two ends of the steel strand are wound and fixed on the middle and upper part of the insulator string, and the tension direction of the steel strand carried by the two insulator strings is the same, and it is opposite to the wind direction . The invention can be implemented without changing the structure of the iron tower and the hanging mode of the insulator strings, and can effectively prevent the wind deflection flashover accident caused by the excessive wind deflection range of the suspended insulator strings, and is convenient and practical.

Description

technical field [0001] The invention relates to the technical field of power transmission line devices, in particular to an adaptive wind deflection prevention device for suspension insulator strings. [0002] technical background [0003] With the rapid development of power grid construction, line corridors are becoming more and more tense, more and more transmission lines pass through areas with complex terrain and harsh weather conditions, and wind flashovers are becoming more and more serious. The insulator strings and conductors of overhead transmission lines deviate from their vertical position under the action of strong wind load, and sway out of plane. A discharge phenomenon will occur, causing the transmission line to trip, that is, a wind deflection flashover accident. The success rate of reclosing after wind deflection tripping of transmission lines is low, which seriously affects and threatens the normal operation of the power grid system, causing huge economic l...

AI Technical Summary

Problems solved by technology

According to the previous field experience of wind deflection prevention and control, the wind deflection prevention method of restricting the displacement freedom of insulator strings is more effective, but the newly added restrictive facilities are often improved for a single insulator string, and the damping load is added to the insulator string, such as patents CN204516503U, In CN208986557U and CN203660474U, the insulator string wind load is transmitted to the cross arm of the iron tower, which affects the stress strength structure of the iron tower, and then needs to check the strength of the iron tower, and even change the structure of the iron tower, which is very important for the overhead line in operation. inconvenient

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