Asymmetric piercing electrode for piercing type lightning arrester

Abstract

An asymmetric piercing electrode for a piercing type lightning arrester comprises a piercing wire clamp (1), an arc-guiding foot (2) and an insulating cover (3), wherein the piercing wire clamp is mounted on a 10 kV insulated wire, and the arc-guiding foot is mounted below the 10 kV insulated wire; the piercing wire clamp (1) and the arc-guiding foot (2) are assembled together and then sleeved with the insulating cover (3), certain arcs can be withstood, and the problem of insulation defects caused by the fact that the insulated wire is partially exposed due to the high-voltage piercing electrode is solved. The piercing wire clamp is formed by combining an upper press plate, a middle press plate, a lower press plate, double-fastening nuts and pressure nuts, and semi-circular halves provided with triangular sharp teeth are arranged on the upper surface of the middle press plate and the lower surface of the upper press plate respectively and used for clamping the insulated wire. With the adoption of the asymmetric piercing electrode, under the conditions that a lightning arrester body is damaged and a gap is broken through, power-frequency follow current arcs can be dredged to the asymmetric arc-guiding foot for burning, are guided to be deviated from the wire and drift outwards in the direction away from an insulator.

Description

technical field [0001] The invention belongs to the technical field of lightning protection for power distribution lines, and is suitable for lightning protection design when a piercing type lightning arrester protects power distribution lines, and in particular relates to an asymmetric piercing electrode suitable for a piercing type lightning arrester. Background technique [0002] The power distribution line is the level closer to the user in the power system. It is responsible for the important responsibility of supplying power to industrial and agricultural production and residents' daily life. It has the characteristics of complex line structure, large number of lines, and wide coverage area. In the past, the idea of ​​focusing on the main network and ignoring the distribution network existed for a long time, resulting in a large gap between the equipment status and technical level of the current distribution network compared with the main network. The insulatio...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems existing in the puncture electrodes of the existing 10kV insulated wires and overcome the shortcomings of the electrodes used in metal oxide arresters with outer series gaps. The present invention discloses a new asymmetric puncture electrode suitable for puncture arresters

The puncture clamp is installed on the 10kV insulated wire, and the arc guide foot is installed under the 10kV insulated wire. After the arc guide foot is assembled, it is set outside it, which can withstand a certain arc, and solves the problem that the high-voltage puncture electrode makes the insulated wire partially exposed and there is an insulation defect.

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