Aerial insulated wire lightning protection device

An overhead insulation and lightning protection device technology, applied in overhead installation, circuit devices, emergency protection circuit devices, etc., can solve the problems of small protection range of zinc oxide arresters, increased investment costs, increased investment costs, etc., to solve the lightning strike disconnection Accident, simple manufacturing process, the effect of solving the explosion

Inactive Publication Date: 2008-10-01
国网安徽省电力有限公司合肥供电公司
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AI Technical Summary

Problems solved by technology

[0003] 1. The protection range of the zinc oxide arrester is small. If it is necessary to increase the protection range, it must be installed on each pole. On the one hand, the investment cost is increased, and auxiliary facilities such as cross arms need to be installed on the original line. The construction is difficult. This method has advantages for the protection of electrical equipment, b

Method used

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  • Aerial insulated wire lightning protection device
  • Aerial insulated wire lightning protection device
  • Aerial insulated wire lightning protection device

Examples

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Embodiment Construction

[0020] see figure 1 , with the insulator 4 on the insulated circuit as a support, located below the insulated circuit 3, in the middle of the insulator 4, and on the middle column of the insulator, the drain ring 2 is set, and the connecting plate 5 is fixed on the lower end of the insulator 4 by bolts. The non-linear current limiting element 1 is connected in series between 2 and the connection plate 5, and the series gap is formed by the diversion ring 2, the non-linear current limiting element 1 and the insulating circuit 3.

[0021] see image 3 , the non-linear current-limiting element 1 adopts a silicon rubber zinc oxide arrester, which is specifically composed of a composite silicon rubber insulating jacket 7 wrapped with a resistance valve plate 6, and the two ends are respectively connected to a stainless steel drainage ring 2 and a connecting plate 5.

[0022] see figure 2 , The drainage ring 2 adopts a stainless steel component composed of two semicircles. This ...

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PUM

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Abstract

An overhead insulated wire lightning protection device is characterized in that an insulator on the insulated circuit is taken as a bracket. A drainage ring is provided at the lower part of the circulation circuit, at the middle part of the insulator and the central column of the insulator. The lower end of the insulator is fixedly provided with a connecting board through a bolt. A nonlinear current limiting element is connected in series between the drainage ring and the connecting board. The drainage ring, the nonlinear current limiting element and the insulated circuit form a series gap. The device of the invention can effectively switch off the industrial frequency afterflow caused by the current of thunder. The disconnection of the overhead insulated wire caused by lightning stroke is prevented, and the generation of the accident of wire disconnection caused by lightning stroke is settled from the root.

Description

technical field [0001] The invention relates to a lightning protection device, in particular to an overvoltage lightning protection device for overhead insulated lines. Background technique [0002] A large number of overhead insulated wire lines are used in the 10kV distribution network, which effectively solves the contradiction between tree lines and line corridors. However, the statistics of lightning breakage and insulator breakdown accidents on insulated lines have been on the rise in recent years, and have risen sharply with the increase of insulated wire line length, which have become the main source of serious threats to the safe operation of lines. At present, the existing overvoltage protection devices for overhead insulated lines include zinc oxide arresters, overhead lightning arresters, etc., but they have the following problems: [0003] 1. The protection range of the zinc oxide arrester is small. If it is necessary to increase the protection range, it must b...

Claims

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Application Information

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IPC IPC(8): H02G7/00H02H9/04
Inventor 任海龙宁彤马建
Owner 国网安徽省电力有限公司合肥供电公司
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