Resistance reducing device for ground grid

A technology for grounding grid and resistance reduction, applied in the direction of connection, connection contact material, line/collector parts, etc., can solve problems such as difficulties, water loss, grounding resistance rebound, etc., to avoid water loss and stabilize soil resistivity , Reduce the effect of grounding resistance

Inactive Publication Date: 2013-01-30
YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +3
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the implementation of the protection of cultivated land and environmental protection policies, most of the substations are selected in high soil areas. During the construction period, the grounding resistance of the grounding grid is less than 0.5 ohms, which is extremely difficult; and the grounding resistance will rebound and rise after acceptance and operation. Phenomenon; even after taking deep well resistance reduction (with water and resistance reduction agent) treatment again, the phenomenon of ground resistance rebound and increase still occurs, which is mainly caused by water loss or drought season

Method used

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  • Resistance reducing device for ground grid
  • Resistance reducing device for ground grid

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specific Embodiment approach

[0010] The specific embodiment: below in conjunction with accompanying drawing, the best embodiment of the present invention is described in detail:

Embodiment

[0011] Embodiment: a kind of resistance reducing device of grounding network (referring to Figure 1-Figure 2 ), it includes a hollow pipe network 1, and two water injection ports 3 are symmetrically arranged on the hollow pipe network 1, and a valve 4 is provided on the water injection port 3, and the hollow pipe network 1 is composed of plastic hollow pipes 6 connected, and each hollow pipe 6 There are several small holes 2 evenly distributed around the pipe wall; the shape of the hollow pipe network 1 is the same as that of the grounding network 5, and it is laid on the top of the grounding network 5 when in use; The hollow tube 6 is filled with liquid (such as water or resistance reducing liquid, etc.) to moisten the soil around the grounding grid, thereby reducing the soil resistivity and achieving the purpose of reducing the grounding resistance. The water injection valve 4 can be controlled manually or automatically. When the grounding network resistance measured by the...

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Abstract

The invention discloses a resistance reducing device for a ground grid. The resistance reducing device is characterized by comprising a hollow pipe network (1), wherein a water injection port (3) is arranged in the hollow pipe network (1), a valve (4) is arranged on the water injection port (3), the hollow pipe network (1) is formed by connecting hollow pipes (6), and uniformly-distributed pores (2) are arranged at the periphery of the pipe wall of each hollow pipe (6). According to the resistance reducing device, liquid (such as water or resistance reducing agent) is injected to the hollow pipe network through the water injection port, and the soil around the ground grid is wetted, so that the soil resistivity is reduced, and the purpose of reducing the ground resistance is realized.

Description

Technical field: [0001] The invention relates to a resistance reducing device for a grounding grid, which belongs to the fields of design, operation and maintenance of electric power system power plants and substations. Background technique: [0002] In recent years, with the implementation of the protection of cultivated land and environmental protection policies, most of the substations are selected in high soil areas. During the construction period, the grounding resistance of the grounding grid is less than 0.5 ohms, which is extremely difficult; and the grounding resistance will rebound and rise after acceptance and operation. Phenomenon; Even after taking deep well resistance reduction (with water and resistance reduction agent) treatment again, the phenomenon of ground resistance rebound and increase still occurs, which is mainly caused by water loss or drought season. Invention content: [0003] The object of the present invention is to overcome the deficiencie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01R43/00H01R4/66
Inventor 王星涵王训杰王茂成张波丁磊孙怡
Owner YANTAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER
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