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Lightning protection method of distribution line near microwave tower

A technology for power distribution lines and microwave towers, applied in circuit devices, emergency protection circuit devices, emergency protection circuit devices for limiting overcurrent/overvoltage, etc., can solve problems such as electrical equipment damage, and achieve economical lightning protection effects , The effect of convenient line operation analysis

Active Publication Date: 2013-07-10
STATE GRID CORP OF CHINA +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, based on the lightning coverage area and the distance between the microwave tower and the distribution line, reasonably designs a lightning protection method for the distribution line near the microwave tower, which is applied to the 10kV power distribution near the microwave tower Lines, which solve the problem of damage to 10kV distribution lines and electrical equipment near microwave towers due to lightning overvoltage

Method used

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  • Lightning protection method of distribution line near microwave tower
  • Lightning protection method of distribution line near microwave tower

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Embodiment

[0020] Such as figure 1 As shown, when the distance between the microwave tower 1 and the 10kV distribution line 2 is greater than 5 times the tower height, that is, greater than 65m, five groups of line arresters 3 with series gaps are installed continuously on the distribution line tower adjacent to the microwave tower. Such as figure 2 As shown, when the distance between the microwave tower 1 and the 10kV distribution line 2 is less than 5 times the height of the tower, that is, less than 65m, five groups of lightning-cutters 4 are installed continuously on the distribution line tower adjacent to the microwave tower; the microwave tower is adjacent to the 10kV distribution line. The distribution transformer and switch on the power line are equipped with a tripping type gapless zinc oxide surge arrester with a flow capacity of 10kA on the high-voltage side and low-voltage side, and a tripping type gapless zinc oxide arrester with a flow capacity of 10kA is installed on the ...

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Abstract

The invention relates to a lightning protection method of a distribution line near a microwave tower. The method comprises the following steps of: continuously mounting 5 groups of lightning protectors with series-connected clearance lines according to the fact that the distance between the microwave tower and the distribution line is greater than 5 times of the height of a rod tower; and continuously mounting 5 groups of lightning conductors according to the fact that the distance between the microwave tower and the distribution line is less than 5 times of the height of the rod tower. According to the method, electrical equipment near the microwave tower is prevented from being damaged by the thunder introduced from the microwave tower, so that the safe and normal running of the line is not influenced; and the analysis on the line running is performed conveniently. As a result, based on the overall consideration of engineering cost, construction, maintenance and other factors with the lightning protection effect, the most economical lightning protection effect is achieved.

Description

technical field [0001] The invention relates to a lightning protection method, in particular to a lightning protection method for a power distribution line near a 10kV microwave tower, and belongs to the field of electric power applications. Background technique [0002] In recent years, communication equipment has been widely used. In order to enhance the coverage area of ​​communication signals, more and more microwave towers have been built. Because microwave stations need power, they are generally built near power distribution lines. The microwave tower is generally 50-80 meters higher than the building. From the perspective of atmospheric overvoltage, it is a lightning-inducing device like a lightning rod. Once a microwave tower is struck by lightning, it can simultaneously cause lightning overvoltage in multiple parts within a relatively large range, resulting in power distribution near the microwave tower. Lines and electrical equipment are damaged due to overvoltag...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H9/04
Inventor 刘博王清昊李刚任冬霞苏旸裴玉杰马波王柳张晓姝
Owner STATE GRID CORP OF CHINA
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