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Overvoltage protection device

A protection device, overvoltage technology, applied in overvoltage arresters, circuits, electrical components, etc. using spark gaps, it can solve the problems of lightning strike and disconnection of overhead insulated wires, and achieve the elimination of short-circuits between phases, protection of insulated wires, and simple structure. Effect

Active Publication Date: 2022-05-13
SHENZHEN POWER SUPPLY BUREAU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Based on this, it is necessary to solve the problem that overhead insulated lines are prone to lightning strike disconnection, and provide a simple structure, easy installation, and low cost Low overvoltage protection device

Method used

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Embodiment Construction

[0030] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0031] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counte...

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Abstract

The invention relates to an overvoltage protection device which comprises a sleeve, the sleeve comprises arc striking electrodes and an arc extinguishing assembly, the two arc striking electrodes are arranged at the two ends of the sleeve respectively, a discharge gap is formed between the two arc striking electrodes, the arc extinguishing assembly is arranged in the sleeve, and the arc extinguishing assembly is arranged between the arc striking electrodes. The arc extinguishing assembly is movably connected with the sleeve; the connecting wire is electrically connected with the arc striking electrode; and the wire clamp is used for tightly and electrically connecting an insulated wire with the connecting wire. The two ends of the sleeve are connected between any two phases of overhead insulated wires through the wire clamp and the connecting wire, and lightning overvoltage on the insulated wires is guided to the sleeve through the connecting wire. When lightning overvoltage occurs, the discharge gap between the two arc striking electrodes is broken down to form a continuous electric arc, and the arc extinguishing assembly can form transient vacuum in the sleeve to extinguish the electric arc, eliminate interphase short circuit and release the overvoltage of the insulated wire, so that the effect of protecting the insulated wire is achieved.

Description

technical field [0001] The invention relates to the technical field of lightning protection for overhead insulated lines, in particular to an overvoltage protection device. Background technique [0002] The network structure of the 10kV distribution network is complex, there are few lightning protection measures, and the level of lightning resistance is low. The lightning strike failure rate of the distribution network under lightning overvoltage is high, and lightning strike disconnection is prone to occur. Caused by a broken wire, when the overhead insulated line flashover due to lightning overvoltage, the instantaneous arc current is very large for a short time, and the lightning flashover will form a pinhole on the insulation layer of the insulated wire, between two or three phases A short-circuit channel is formed, and the arc energy will increase suddenly. Because the insulating layer of the overhead insulated wire hinders the arc from slipping on its surface, the high...

Claims

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Application Information

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IPC IPC(8): H01T4/10H01B17/46
CPCH01T4/10H01B17/46
Inventor 赵法强余春欢萧新敏马俊军刘瑞生付威罗洪佑龙海波林泽彬刘松任明欣
Owner SHENZHEN POWER SUPPLY BUREAU
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