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A device for reducing the resistance of a grounding electrode of a lightning arrester and a method for reducing the resistance thereof

A grounding electrode and arrester technology, applied in the field of arrester grounding electrode resistance reduction devices, can solve the problems of unsatisfactory resistance reduction effect and poor durability, and achieve good resistance reduction effect, small maintenance workload, and long-term maintenance of the grounding resistance value. stable effect

Active Publication Date: 2017-03-01
CHINA THREE GORGES CORPORATION +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high impedance characteristics of the environmental soil matrix, the above measures are ultimately restricted by the high impedance of the soil, and the lightning discharge channel forms a bottleneck effect, and the resistance reduction effect is sometimes not ideal, or the durability is not strong

Method used

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  • A device for reducing the resistance of a grounding electrode of a lightning arrester and a method for reducing the resistance thereof

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Effect test

Embodiment 1

[0034] A grounding electrode resistance reduction device for a lightning arrester, the device includes a reservoir 4 built on the ground soil layer 7, the upper part of the reservoir 4 is connected with a water inlet pipe 3 for replenishing water, and the lower part of the reservoir 4 is connected with a drain pipe 6 , used for maintenance and emptying, the top of the reservoir 4 is covered with a movable cover to reduce water evaporation and facilitate maintenance; the reservoir 4 is filled with a liquid layer 2, and the bottom of the reservoir 4 is laid with a carbon The powder layer 1 and the ground soil layer 7 under the reservoir 4 are embedded with a lightning rod grounding electrode 9 and a grounding wire 8, and the lightning rod grounding electrode 9 and the grounding wire 8 are electrically connected, and the bottom of the reservoir 4 is the ground soil layer 7.

[0035] The side of the reservoir 4 is provided with a water level gauge 5 for daily water level observatio...

Embodiment 2

[0044] A resistance reduction method using a grounding electrode resistance reduction device of a lightning arrester, the method comprising the following steps:

[0045] 1) Fill the reservoir 4 with water, the water penetrates into the soil layer 7 at the bottom of the reservoir 4 through the carbon powder layer 1, and infiltrates the soil around the ground electrode 9;

[0046] 2) After no less than 72 hours of natural penetration, measure the grounding resistance of the lightning rod, and judge whether to add a chemical resistance reducing agent to the reservoir 4 according to whether the measured grounding resistance of the lightning rod is ≤10Ω:

[0047] If the grounding resistance of the lightning rod is less than or equal to 10Ω, there is no need to add a chemical resistance reducing agent to the reservoir 4, and the reservoir is always filled with water during daily operation;

[0048] If the grounding resistance of the lightning rod is greater than 10Ω, a chemical resi...

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Abstract

A grounding electrode resistance reduction device for a lightning arrester, the device includes a reservoir built on the ground soil layer, the upper part of the reservoir is connected with a water inlet pipe, the lower part of the reservoir is connected with a drain pipe, the reservoir is filled with a liquid layer, and the reservoir A carbon powder layer is laid on the bottom of the pool, a lightning rod grounding electrode and a grounding wire are embedded in the ground soil layer under the reservoir, and the lightning rod grounding electrode and the grounding wire are electrically connected, and the bottom of the reservoir is the ground soil layer. The invention provides a lightning arrester grounding electrode resistance reduction device and its resistance reduction method, which can make up for the deficiencies of the existing lightning rod grounding electrode resistance reduction method, improve the soil moisture content, and assist the comprehensive combination of physical resistance reduction and chemical resistance reduction The way to dynamically reduce the soil resistance, to achieve the purpose of reducing the resistance of lightning grounding.

Description

technical field [0001] The invention relates to the field of lightning protection safety, in particular to a device for reducing resistance of a ground electrode of a lightning arrester and a method for reducing resistance thereof. Background technique [0002] The lightning rod consists of lightning receptors, down conductors, and ground electrodes. When thundercloud charges gather in the atmosphere, the lightning rod attracts the charges and releases them into the ground through the discharge channel formed by the lightning receptors, down conductors, and ground electrodes, reducing the charge and neutralizing it. And, avoid a large amount of charge accumulation and cause a strong lightning strike accident, or when lightning occurs, let the lightning current flow from the lightning rod to the ground, thereby protecting buildings or equipment within the coverage of the lightning rod. [0003] In order to ensure that the charge accepted by the lightning rod can be released t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R4/66
Inventor 吴天明吴边尧黄真辉
Owner CHINA THREE GORGES CORPORATION
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