Serial multi-cavity arc-extinguishing lightning-protection device

A lightning protection device, multi-chamber technology, applied in overvoltage arresters using spark gaps, electrical components, spark gaps, etc., can solve the probability of large lightning shielding accidents on overhead ground wires, high operation and maintenance costs, and large investment costs and other problems, to achieve the effect of strong lightning protection performance, low maintenance cost, and stable operation and maintenance.

Inactive Publication Date: 2018-03-23
NANYANG JINNIU ELECTRIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Problems in the above protective measures: There is still a high probability of lightning shielding accidents in overhead ground wires, and the investment cost is huge; installing line-type metal oxide arresters is a very effective method, but its installation is complicated and the operation and maintenance

Method used

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  • Serial multi-cavity arc-extinguishing lightning-protection device
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  • Serial multi-cavity arc-extinguishing lightning-protection device

Examples

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Embodiment

[0026] Embodiment: A series multi-chamber arc extinguishing and lightning protection device for 10kV power distribution overhead lines.

[0027] see figure 1 , multi-chamber arc extinguishing and lightning protection body 1, puncture wire clamp electrode 2, series main gap 3 and installation fitting 4, in which the distance of the series main gap (air gap) is 50mm±5mm, and the puncture wire clamp electrode 2 pierces through the wire clamp It is electrically connected with the inner conductor of the insulated overhead conductor. The multi-chamber arc extinguishing and lightning protection body 1 is installed on the installation fitting 4. The installation fittings can be adjusted so that the electrode on the multi-chamber arc-extinguishing and lightning protection body and the electrode of the puncture wire clamp The main gap distance between them meets the requirement of 50mm±5mm.

[0028] figure 2 As shown, a plurality of chambers 6 are set in the multi-chamber arc extingu...

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Abstract

The invention discloses a serial multi-cavity arc-extinguishing lightning-protection device. The device comprises an installation fitting connected to the bottom of a protected circuit insulator and amulti-cavity arc-extinguishing lightning-protection body supported by the installation fitting, the top of the protected circuit insulator is provided with a punctured wire clamp electrode, and a serial main gap is arranged between the punctured wire clamp electrode and the multi-cavity arc-extinguishing lightning-protection body; and the two ends of the multi-cavity arc-extinguishing lightning-protection body are provided with end-portion fittings respectively, the multi-cavity arc-extinguishing lightning-protection body is internally provided with internal electrodes, a gas cavity is formedbetween every two adjacent internal electrodes, and the two internal electrodes positioned in the end portions are connected to the adjacent end-portion fittings respectively. Compared with the priorart, the serial multi-cavity arc-extinguishing lightning-protection device can be produced in a low-cost and batch manner; the device is characterized by simple manufacturing technology, low cost, high lightning protection performance, and stable operation and maintenance, and can be widely popularized; and after operation, the maintenance cost is extremely low, and basically, the device is freeof maintenance.

Description

technical field [0001] The invention relates to the technical field of overvoltage protection devices, in particular to a series multi-chamber arc extinguishing and lightning protection device, which is used for the protection work of lightning overvoltage in a medium-voltage distribution network. Background technique [0002] When the thundercloud discharges to the ground, the rapid change of the electromagnetic field around the discharge channel will generate an induced overvoltage on the nearby overhead line. Thunderclouds may even directly hit distribution overhead lines, generating extremely high lightning overvoltages. When the lightning overvoltage exceeds a certain value, it will cause flashover or even disconnection of the distribution line, causing damage to the power supply network, which will directly affect the reliability of the power supply of the distribution system. Therefore, it is necessary to take protective measures against the lightning overvoltage of ...

Claims

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Application Information

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IPC IPC(8): H01T4/16H01T4/20H01T1/02
CPCH01T1/02H01T4/16H01T4/20
Inventor 黄海赵冬一毛仲靳国青张玉黄杰何稳
Owner NANYANG JINNIU ELECTRIC
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