Delay coupling mixed airflow arc extinguishing lightning protection device

Abstract

The invention provides a delay coupling mixed airflow arc extinguishing lightning protection device. The delay coupling mixed airflow arc extinguishing lightning protection device comprises two lightning protection insulator main bodies, a grading ring, a skirt edge, a low-voltage grounding electrode and a high-voltage electrode, one ends of the two lightning protection insulator main bodies are connected through a low-voltage grounding electrode, and the other ends are connected through a high-voltage electrode; the two ends of each lightning protection insulator main body are provided with grading rings, and each lightning protection insulator main body is provided with a plurality of skirt edges. An arc extinguishing path is arranged in each lightning protection insulator main body; the arc extinguishing path is mainly composed of a plurality of longitudinal blowing airflow arc extinguishing main bodies and a plurality of transverse blowing airflow arc extinguishing pipelines; the two ends of the arc extinguishing path are both longitudinal blowing airflow arc extinguishing bodies, and a transverse blowing airflow arc extinguishing pipeline is arranged between every two adjacent longitudinal blowing airflow arc extinguishing bodies. According to the lightning protection device, the arc extinguishing effect and the insulating effect of the lightning protection device formed by parallel connection are improved in a mode of combining the insulating string and the arc extinguishing units, meanwhile, the arc extinguishing path is lengthened by utilizing a transverse and longitudinal blowing arc extinguishing mode in the arc extinguishing chamber, the arc extinguishing time is shortened, and therefore the arc extinguishing effect is improved.

Description

technical field [0001] The invention relates to the technical field of lightning protection devices for power transmission lines, in particular to a time-delayed coupled mixed airflow arc extinguishing lightning protection device. Background technique [0002] Lightning protection of transmission lines has always been an important part of lightning protection work in the power sector, and lightning faults are still one of the important factors affecting power grid security. The impact flashover caused by the lightning strike on the transmission line leads to the flashover of the line insulator, which in turn produces a large power frequency freewheeling current, which damages the insulator string and hardware, resulting in line accidents. In this regard, the power sector generally adopts the installation of line lightning arresters on the transmission lines to achieve protection. [0003] The arc is a free gas with high temperature and high conductivity, which destroys the ...

AI Technical Summary

Problems solved by technology

[0005] At present, the existing lightning protectors are generally composed of insulating strings and arc extinguishing units connected in parallel. Among them, the insulating strings only have the function of insulation, and do not have the function of arc extinguishing. The effect is not ideal

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