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Grounding grid system construction method

A construction method and grounding grid technology, applied in the field of grounding grid system construction, can solve the problems that the grounding grid cannot take into account corrosion resistance, current dissipation effect and heat dissipation effect, and achieve good heat dissipation effect, large surface area and long service life Effect

Inactive Publication Date: 2020-09-04
ECONOMIC TECH RES INST OF STATE GRID HENAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a grounding grid system construction method to solve the technical problem that the grounding grid constructed by the existing grounding grid system construction method cannot take into account corrosion resistance, current dissipation effect and heat dissipation effect

Method used

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Embodiment 1

[0039] Embodiment 1: A method for constructing a grounding grid system, comprising the following steps:

[0040] Buried vertical ground electrodes, figure 1 A vertical grounding electrode is shown, the conductor part of the vertical grounding electrode is composed of a first conductor 11, the first conductor 11 is a hollow pure aluminum conductor or a hollow aluminum alloy conductor, the cross section of the first conductor 11 is circular, The outer diameter of the ring is 40 mm to 50 mm, the wall thickness of the ring is 3.5 mm to 5.0 mm, and the outer surface of the first conductor 11 is treated with a conductive oxidation method to form a conductive protective layer 111;

[0041] Lay horizontal ground electrodes, Figure 5 A horizontal ground electrode is shown, the horizontal ground electrode includes a third conductor 21 and a fourth conductor 20, the third conductor 21 is covered on the surface of the fourth conductor 20 and is non-detachably connected with the fourth c...

Embodiment 2

[0043] Embodiment 2: A method for constructing a grounding grid system, comprising the following steps:

[0044] Buried vertical ground electrodes, figure 1 A vertical grounding electrode is shown, the conductor part of the vertical grounding electrode is composed of a first conductor 11, the first conductor 11 is a hollow pure aluminum conductor or a hollow aluminum alloy conductor, the cross section of the first conductor 11 is circular, The outer diameter of the ring is 40 mm to 50 mm, the wall thickness of the ring is 3.5 mm to 5.0 mm, and the outer surface of the first conductor 11 is treated with a conductive oxidation method to form a conductive protective layer 111;

[0045] Lay horizontal ground electrodes, Figure 4A horizontal ground electrode is shown, the horizontal ground electrode includes a third conductor 21, the third conductor 21 is a solid pure aluminum conductor or a solid pure aluminum alloy conductor, the cross section of the third conductor 21 is circu...

Embodiment 3

[0047] Embodiment 3: A method for constructing a grounding grid system, comprising the following steps:

[0048] Buried vertical ground electrodes, figure 2 , image 3 A vertical ground electrode is shown respectively, see figure 2 , the vertical grounding electrode includes a first conductor 11 and a second conductor 10, the first conductor 11 is covered on the surface of the second conductor 10 and is indetachably connected with the second conductor 10, the first conductor 11 is a hollow pure aluminum conductor or a hollow aluminum alloy The second conductor 10 is flat steel, the thickness of the first conductor 11 is 0.2 mm to 0.5 mm, and the outer surface of the first conductor 11 is treated with a conductive oxidation method to form a conductive protective layer 111; see image 3 , the vertical grounding electrode includes a first conductor 11 and a second conductor 10, the first conductor 11 is covered on the surface of the second conductor 10 and is indetachably con...

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Abstract

The invention discloses a grounding grid system construction method and belongs to the field of grounding grids. The method comprises the steps of firstly burying a vertical grounding electrode, wherein the vertical grounding electrode is provided with a pure aluminum skin or an aluminum alloy skin considering the diffusion effect on the basis of the large surface area, and the outer surface of the pure aluminum skin and the outer surface of the aluminum alloy skin are treated through a conductive oxidation method to form a conductive protection layer; then, laying a horizontal grounding electrode, wherein the horizontal grounding electrode is provided with a cylindrical pure aluminum skin or an aluminum alloy skin considering the heat dissipation effect on the basis of the current diffusion and voltage equalization effects, and the outer surfaces of the pure aluminum skin and the aluminum alloy skin are treated through the conductive oxidation method to form a conductive protection layer; and then electrically connecting the vertical grounding electrode and the horizontal grounding electrode. The constructed grounding grid system is practical and corrosion-resistant, is long in service life, and can give consideration to the diffusion and voltage-sharing effects of the power frequency current and the lightning current to the maximum extent.

Description

technical field [0001] The invention relates to the technical field of grounding grids, in particular to a method for constructing a grounding grid system. Background technique [0002] The grounding device is an important part of the overhead transmission line. At present, the grounding device of the transmission line is mainly buried underground with a comprehensive grounding device composed of galvanized round steel. However, the resistivity of steel is higher than that of copper and aluminum, and the corrosion rate in the soil is slower. Fast, unable to achieve the same life as other components of the transmission line, it needs to be checked and replaced regularly. However, the price of copper is relatively high, and it is not economical to use it as a grounding material. Ordinary aluminum or aluminum alloy materials will naturally oxidize in the air to form a dense and highly insulating oxide film, and cannot be used directly as a grounding material. [0003] In the g...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R4/66H01R4/58H01R4/62
CPCH01R4/58H01R4/62H01R4/66
Inventor 胡鑫杨红旗刘湘莅郭新菊杨大冬席小娟刘清才奚妍王锐路晓军张秀杰刘存凯梁晟杨敏肖波
Owner ECONOMIC TECH RES INST OF STATE GRID HENAN ELECTRIC POWER
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