Intelligent multi-layer gap overvoltage protector based on graphite-metal coating material

Abstract

The invention discloses an intelligent multi-layer gap overvoltage protector based on a graphite-metal coating material, which is composed of a plurality of graphite-metal combined electrodes, wherein each electrode is insulated and isolated by an insulating medium, a trigger electrode is designed at the lowest electrode gap of the multi-layer gap of the graphite-metal coating, and the trigger electrode can automatically sense, couple and receive energy of lightning overvoltage and trigger rapid conduction of the multi-layer gap, so that the three-terminal overvoltage protection gap of the multi-layer gap structure has the remarkable characteristics of high direct-current breakdown voltage, high voltage protection level, short response time, high power frequency or direct-current subsequent current resistance and the like, and the intelligent multi-layer gap overvoltage protector can be used for direct lightning stroke and lightning induction overvoltage protection in application occasions such as the communication field and even the electric power field.

Description

technical field [0001] The invention relates to an overvoltage protection device, in particular to an intelligent multi-layer gap overvoltage protector based on graphite-metal coating material. Background technique [0002] With the application of switchgear in high-voltage transmission lines and the technological progress of electronic and information systems, the impact and harm of overvoltage on sensitive and weak electronic equipment and communication devices are increasing. Overvoltage protection is the key to power, An important guarantee for the safe operation of the communication system. [0003] Since the overvoltage protection spark gap of the claw electrode structure of Phoenix Contact Company of Germany and the overvoltage protection product of the laminated graphite structure of Opterman Co., Ltd. came out, many domestic research institutions and production enterprises have based on the overvoltage protection of the laminated structure. The gap has the advantag...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to address the defects existing in the existing laminated graphite gap, and propose an intelligent multi-layer gap overvoltage protector based on graphite-metal coating materials, which can significantly improve the protection performance of the multi-layer overvoltage protection gap and effectively solve the problem of overvoltage The technical problem of the mutual restriction of AC and DC voltage tolerance, anti-freezing ability and voltage protection level of the protection gap can also solve the defect of poor weldability between the graphite gap and the external lead-out electrical connection metal electrode

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