Solid-phase type line span center lightning stroke flashover arc extinguishing lightning arrester

Abstract

The invention discloses a solid-phase type line span center lightning stroke flashover arc extinguishing lightning arrester. The solid-phase type line span center lightning stroke flashover arc extinguishing lightning arrester comprises lightning protection lines (3), conductive wires (6) and arc extinguishing lightning arresters (4); the arc extinguishing lightning arresters (4) are fixed at the span centers of lightning protection lines (3) and the conductive wires (6) respectively in pairs or at different positions of the spans of the lightning protection lines (3) and the conductive wires (6); and a pair of arc extinguishing lightning arresters (4) on each lightning protection line (3) and each conductive wire (6) form an arc extinguishing lightning protection gap between the lightning protection line and the conductive wire. As the solid-phase type arc extinguishing lightning protection technology is adopted, arc extinguishing becomes faster and more efficient, arc extinguishing energy packages have huge energy and can extinguish big arc rapidly and exactly; the arc extinguishing energy packages inside the span center lightning stroke flashover arc extinguishing lightning arrester can be converted automatically, so that effective actions under the condition of multiple lightning strokes are realized; an upper cover can be dismantled, so that the arc extinguishing energy packages can be replaced and repeated use is realized; the solid-phase type line span center lightning stroke flashover arc extinguishing lightning arrester is light in weight and convenient to install, cannot result in excessive bearing burden for the original conductive wires, the original lightning protection lines, and the original poles and towers, and is relatively strong in practicability.

Description

technical field [0001] The invention relates to the technical field of high-voltage power transmission arc extinguishing and lightning protection equipment, in particular to a solid-phase line span central lightning flashover arc extinguishing and lightning protection device. Background technique [0002] At present, lightning protection of transmission lines has always been an important part of the lightning protection work of the power sector, and lightning strike accidents are still one of the important factors affecting the safety of the power grid. my country's current overvoltage protection design specification stipulates that the air gap S (measured in m) is calculated according to the formula: S=0.012l+1 (m), where l is the span (unit m). According to this formula, the counterattack phenomenon when lightning strikes the central lightning protection line is not considered. However, in the actual operation process, lightning strikes at the center of the span occur fro...

AI Technical Summary

Problems solved by technology

In the actual situation, there is a large resistance between the tower and the ground grid. When the lightning strikes the center of the span, the impact characteristics of the lightning strike will cause a huge induced overvoltage, which will easily cause the insulator to flashover.

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