Impressed current cathodic protection system for electric grounding device

A grounding device and applied current technology, applied in the field of power equipment grounding, can solve the problems of difficult operation, large labor and material resources and high cost for grounding grid inspection, maintenance and renovation, and achieve long-term anti-corrosion protection effect.

Inactive Publication Date: 2015-12-02
STATE GRID TIANJIN ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, the ground grid project is concealed. The inspection, maintenance and renovation of the ground grid will consume a lot of manpower and material resources, and the operation is difficult and expensive.

Method used

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  • Impressed current cathodic protection system for electric grounding device

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Embodiment Construction

[0015] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings: It should be emphasized that the embodiments of the present invention are illustrative rather than restrictive, so the present invention is not limited to the implementation described in the specific embodiments. For example, all other implementations obtained by those skilled in the art according to the technical solution of the present invention also belong to the protection scope of the present invention.

[0016] An impressed current cathodic protection system for power grounding devices, such as figure 1 As shown, the system includes a reference electrode 1, a deep well type anode 4, a current control device 3, and a grounding device 2. One end of the reference electrode is buried near the grounding device, and the other end is connected to the current control device through the reference electrode cable. Terminal connection, the positive el...

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Abstract

The invention relates to an impressed current cathodic protection system for an electric grounding device. The system is characterized by comprising a reference electrode, wherein one end of the reference electrode is buried in a position close to the grounding device, and the other end of the reference electrode is connected with a reference terminal of a current control device through a reference electrode cable; and a current output anode end of the current control device is connected with a deep-well type anode which is buried under the ground through an electrode cable, and a current output cathode end of the current control device is connected with a grounding device which is buried under the ground through an electrode cable, so that the impressed current cathodic protection system for the electric grounding device is formed. The impressed current cathodic protection system for the electric grounding device is suitable for anti-corrosion protective systems for grounding grids.

Description

technical field [0001] The invention belongs to the technical field of electric power equipment grounding, in particular to an external current cathodic protection system of a power grounding device. Background technique [0002] The substation grounding grid is an essential facility for working grounding, lightning protection grounding, and protective grounding. It plays the role of leakage and voltage equalization in lightning protection, static electricity, and fault currents. An important safety barrier for operation. However, the grounding grid has been buried underground for a long time. Due to the chemical corrosion of the soil, electrochemical corrosion and stray current corrosion caused by the leakage of operating equipment, the grounding performance will be reduced, and it cannot withstand sudden accidents such as lightning impact or short circuit. Current and short-circuit current cannot fully diffuse in the soil, which will inevitably lead to an increase in the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/06
Inventor 于金山郭军科林琳路菲郑中原邵林
Owner STATE GRID TIANJIN ELECTRIC POWER
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