A system, method and device for testing the corrosiveness of electric grounding current

Abstract

The present invention relates to the technical field of electric grounding corrosion detection, and discloses a system, method and device for testing the corrosiveness of electric grounding current. The present invention obtains the DC current intensity or industrial frequency AC current intensity injected by the equipment above the grounding network into the main network of the grounding network through an underground current monitoring device, calculates the corresponding corrosion rate according to the DC current intensity using Faraday's law, and queries the stored corrosion rate table according to the industrial frequency AC current intensity to obtain the corresponding corrosion rate, wherein the monitoring device includes a DC zero-resistance ammeter, an AC Hall sensor and a data acquisition and transmission module, one end of the DC zero-resistance ammeter is connected to the grounding lead connected to the equipment above the grounding network through a cable, and the other end of the DC zero-resistance ammeter is connected to the grounding lead connected to the main network of the grounding network through a cable, and the AC Hall sensor is set on the cable and located between the grounding lead and the grounding lead; the present invention can directly and accurately measure the underground current corrosion condition of the electric grounding.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power grounding corrosion detection, and in particular to a system, method and equipment for testing the corrosiveness of electric power grounding current. Background Art

[0002] The power grounding grid is of great significance in the safe operation of the power transmission and transformation network, and plays an important role in the safe and stable operation of the power grid. The grounding grid is buried in the soil and is a relatively large grounding body, covering an area ranging from tens of square meters to several square kilometers. Such a large metal structure is buried in the earth, and is connected to high-voltage and ultra-high-voltage transmission facilities above. Its corrosion behavior and corrosion mechanism are quite different from those of ordinary buried structures. In addition to electrochemical corrosion in the soil medium, due to the strong electromagnetic environment, the grounding grid is also subjected to the scattered flow of ground current, which can also cause strong electrical corrosion of the grounding material.

[0003] The ground current generates a stray current on the surface of the grounding electrode of the grounding grid and flows to the earth. Under the action of the ground current, the corrosion rate of the grounding electrode and the deposition process of corrosion products change dramatically. At the same time, under the combined action of metal corrosion dissolution and corrosion product deposition, the effective dissipation area of ​​the grounding electrode is reduced, and the corrosion product deposition layer gradually covers the surface of the grounding electrode and reacts to the ground current dissipation process. When the corrosion is severe or even broken, the grounding electrode dissipation is not smooth, increasing the probability of grounding faults. Therefore, the ground current corrosion of power grounding cannot be ignored.

[0004] The transmission and transformation facilities generate different three-phase peak currents and three-phase electrical phase angles due to different loads. The uneven current formed at this time will be discharged into the earth to balance the current on the line, which is the main reason for the generation of ground current. At the same time, there are also ionization caused by porcelain bottle pollution, high air humidity, and induced currents generated by electromagnetic induction, which will cause part of the AC power frequency current to flow into the earth through the grounding grid. The reasons for the generation of these currents vary greatly, and the load is changing all the time. Therefore, it is difficult to obtain the magnitude of the grounding current of the grounding grid through testing or calculation within a period of time.

[0005] There is currently no effective test method for the ground current corrosion condition of this type of power grounding. Summary of the invention

[0006] The present invention provides a system, method and equipment for testing the corrosion of electric power grounding current, which solves the technical problem of how to effectively test the corrosion condition of electric power grounding current.

[0007] A first aspect of the present invention provides a system for testing the corrosiveness of an electric power grounding current, comprising a grounding current monitoring device and a data processing device;

[0008] The ground current monitoring device comprises a DC zero-resistance ammeter, an AC Hall sensor and a data acquisition and transmission module, wherein the DC zero-resistance ammeter and the AC Hall sensor are both connected to the data acquisition and transmission module; one end of the DC zero-resistance ammeter is connected to a grounding lead connected to the equipment above the grounding network through a cable, and the other end of the DC zero-resistance ammeter is connected to a grounding lead connected to the main network of the grounding network through a cable, and the AC Hall sensor is sleeved on the cable and located between the grounding lead and the grounding lead;

[0009] The data processing device is connected to the data acquisition and transmission module; the data processing device is used to calculate the corresponding grounding grid grounding electrode corrosion rate using Faraday's law according to the DC current intensity when the DC zero-resistance ammeter measures the DC current intensity injected by the equipment above the grounding grid into the grounding grid main grid, and, when the AC Hall sensor measures the industrial frequency AC current intensity injected by the equipment above the grounding grid into the grounding grid main grid, query the stored corrosion rate table according to the industrial frequency AC current intensity to obtain the corresponding grounding grid grounding electrode corrosion rate; wherein the corrosion rate table is provided with grounding grid grounding electrode corrosion rates corresponding to different industrial frequency AC current intensities.

[0010] According to an achievable manner of the first aspect of the present invention, when the data processing device calculates the corresponding grounding grid grounding electrode corrosion rate according to the DC current intensity using Faraday's law, it is specifically used to:

[0011] Calculate the corresponding grounding grid grounding electrode corrosion rate according to the following formula:

[0012]

[0013] Wherein, γ is the corresponding grounding grid grounding electrode corrosion rate, A is the atomic weight of the grounding material of the grounding grid, I is the DC current intensity injected into the grounding grid main grid by the equipment above the grounding grid measured by the DC zero-resistance ammeter, n is the valence of the grounding material of the grounding grid, and S is the cross-sectional area of ​​the grounding material of the grounding grid.

[0014] According to an achievable method of the first aspect of the present invention, one end of the DC zero-resistance ammeter is connected to the grounding electrode adapter plate at one end of the grounding down lead, and the other end of the grounding down lead is connected to the grounding pin of the device above the grounding grid.

[0015] According to an achievable manner of the first aspect of the present invention, the ground current monitoring device further includes a shell; the DC zero-resistance ammeter, AC Hall sensor and data acquisition and transmission module are arranged in the shell.

[0016] According to an achievable manner of the first aspect of the present invention, the housing is a box structure.

[0017] According to an achievable manner of the first aspect of the present invention, the data processing device is further used to upload the obtained ground current corrosion data to a preset terminal, and the ground current corrosion data includes the corrosion rate of the grounding electrode of the grounding grid.

[0018] A second aspect of the present invention provides a method for testing the corrosiveness of an electric power grounding current, the method comprising:

[0019] Receive current intensity monitoring data transmitted by an underground current monitoring device; the underground current monitoring device includes a DC zero-resistance ammeter, an AC Hall sensor and a data acquisition and transmission module, and the DC zero-resistance ammeter and the AC Hall sensor are both connected to the data acquisition and transmission module; one end of the DC zero-resistance ammeter is connected to a grounding lead connected to a device above the grounding grid through a cable, and the other end of the DC zero-resistance ammeter is connected to a grounding lead connected to a main grid of the grounding grid through a cable, and the AC Hall sensor is sleeved on the cable and located between the grounding lead and the grounding lead;

[0020] When the current intensity monitoring data is the DC current intensity injected by the equipment above the grounding grid into the grounding grid main grid as measured by the DC zero-resistance ammeter, the corresponding grounding grid grounding electrode corrosion rate is calculated using Faraday's law based on the DC current intensity; when the current intensity monitoring data is the industrial frequency AC current intensity injected by the equipment above the grounding grid into the grounding grid main grid as measured by the AC Hall sensor, the stored corrosion rate table is queried based on the industrial frequency AC current intensity to obtain the corresponding grounding grid grounding electrode corrosion rate; wherein, the corrosion rate table is provided with grounding grid grounding electrode corrosion rates corresponding to different industrial frequency AC current intensities.

[0021] According to an achievable manner of the second aspect of the present invention, the method of calculating the corresponding grounding grid grounding electrode corrosion rate according to the DC current intensity using Faraday's law includes:

[0022] Calculate the corresponding grounding grid grounding electrode corrosion rate according to the following formula:

[0023]

[0024] Wherein, γ is the corresponding grounding grid grounding electrode corrosion rate, A is the atomic weight of the grounding material of the grounding grid, I is the DC current intensity injected into the grounding grid main grid by the equipment above the grounding grid measured by the DC zero-resistance ammeter, n is the valence of the grounding material of the grounding grid, and S is the cross-sectional area of ​​the grounding material of the grounding grid.

[0025] A third aspect of the present invention provides a device for testing the corrosiveness of an electric power grounding current, comprising:

[0026] A memory for storing instructions; wherein the instructions are used to implement the method for testing the corrosiveness of electric grounding current as described in any of the above-mentioned methods;

[0027] A processor is used to execute instructions in the memory.

[0028] A fourth aspect of the present invention is a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a method for testing the corrosiveness of an electric power grounding current as described in any of the above-described methods.

[0029] It can be seen from the above technical solutions that the present invention has the following advantages:

[0030] The present invention obtains the DC current intensity or industrial frequency AC current intensity injected by the equipment above the grounding grid into the main grounding grid through an underground current monitoring device, calculates the corresponding corrosion rate according to the DC current intensity using Faraday's law, and queries the stored corrosion rate table according to the industrial frequency AC current intensity to obtain the corresponding corrosion rate, wherein the underground current monitoring device includes a DC zero-resistance ammeter, an AC Hall sensor and a data acquisition and transmission module, one end of the DC zero-resistance ammeter is connected to the grounding lead connected to the equipment above the grounding grid through a cable, the other end of the DC zero-resistance ammeter is connected to the grounding lead connected to the main grounding grid through a cable, and the AC Hall sensor is sleeved on the cable and located between the grounding lead and the grounding lead; the present invention realizes direct and accurate measurement of the underground current, calculates the corrosion rate according to the measured current intensity, and realizes effective testing of the underground current corrosion condition of the power grounding. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0032] Figure 1 A structural connection block diagram of a system for testing the corrosiveness of electric grounding current provided by an optional embodiment of the present invention;

[0033] Figure 2 A wiring diagram of a ground current monitoring device provided by an optional embodiment of the present invention;

[0034] Figure 3 A flow chart of a method for testing the corrosiveness of electric grounding current provided in accordance with an optional embodiment of the present invention.

[0035] Reference numerals:

[0036] 1-ground current monitoring device; 2-data processing device; 3-equipment above the grounding grid; 4-grounding down conductor; 5-grounding main grid; 6-grounding up conductor; 7-grounding electrode adapter plate; 8-grounding foot; 10-DC zero-resistance ammeter; 20-AC Hall sensor; 30-data acquisition and transmission module; 40-housing. DETAILED DESCRIPTION

[0037] The embodiments of the present invention provide a system, method and device for testing the corrosion of ground current of power grounding, which are used to solve the technical problem of how to effectively test the corrosion condition of ground current of power grounding.

[0038] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The invention provides a system for testing the corrosiveness of electric power grounding current.

[0040] See also Figure 1 , Figure 1 A structural connection block diagram of a system for testing the corrosiveness of electric power grounding current provided by an embodiment of the present invention is shown.

[0041] A system for testing the corrosiveness of an electric power grounding current provided in an embodiment of the present invention includes a grounding current monitoring device 1 and a data processing device 2 .

[0042] The ground current monitoring device 1 includes a DC zero-resistance ammeter 10, an AC Hall sensor 20 and a data acquisition and transmission module 30, wherein the DC zero-resistance ammeter 10 and the AC Hall sensor 20 are both connected to the data acquisition and transmission module 30; one end of the DC zero-resistance ammeter 10 is connected to a grounding down conductor 4 connected to a device 3 above the grounding network through a cable, and the other end of the DC zero-resistance ammeter 10 is connected to a grounding up conductor 6 connected to a grounding main network 5 through a cable, and the AC Hall sensor 20 is sleeved on the cable and located between the grounding down conductor 4 and the grounding up conductor 6;

[0043] The data processing device 2 is connected to the data acquisition and transmission module 30; the data processing device 2 is used to calculate the corresponding grounding grid grounding electrode corrosion rate using Faraday's law according to the DC current intensity when the DC zero-resistance ammeter 10 measures the DC current intensity injected by the equipment 3 above the grounding grid into the grounding grid main grid 5, and, when the AC Hall sensor 20 measures the industrial frequency AC current intensity injected by the equipment 3 above the grounding grid into the grounding grid main grid 5, query the stored corrosion rate table according to the industrial frequency AC current intensity to obtain the corresponding grounding grid grounding electrode corrosion rate; wherein the corrosion rate table is provided with grounding grid grounding electrode corrosion rates corresponding to different industrial frequency AC current intensities.

[0044] In the above-mentioned embodiment of the present invention, the DC current intensity or the industrial frequency AC current intensity injected by the equipment 3 above the grounding grid into the grounding grid main grid 5 is obtained through the ground current monitoring device 1, and the corresponding corrosion rate is calculated according to the DC current intensity using Faraday's law. The stored corrosion rate table is queried according to the industrial frequency AC current intensity to obtain the corresponding corrosion rate, thereby realizing direct and accurate measurement of the ground current, and calculating the corrosion rate through the measured current intensity, thereby realizing effective testing of the ground current corrosion condition of the power grounding.

[0045] In one achievable manner, when the data processing device 2 calculates the corresponding grounding grid grounding electrode corrosion rate according to the DC current intensity using Faraday's law, it is specifically used to:

[0046] Calculate the corresponding grounding grid grounding electrode corrosion rate according to the following formula:

[0047]

[0048] Wherein, γ is the corresponding grounding grid grounding electrode corrosion rate, A is the atomic weight of the grounding grid grounding material, I is the DC current intensity injected by the DC zero-resistance ammeter 10 from the equipment 3 above the grounding grid to the grounding grid main grid 5, n is the valence of the grounding grid grounding material, and S is the cross-sectional area of ​​the grounding grid grounding material.

[0049] The embodiment of the present invention provides a specific calculation formula for calculating the corrosion rate of the corresponding grounding grid grounding electrode according to the DC current intensity using Faraday's law. The corrosiveness of the corresponding DC ground current is calculated according to the formula, and the method is simple and convenient.

[0050] According to the research results of the laboratory on the corrosiveness of underground power-frequency alternating current to metal materials, a corrosion rate table can be constructed and then stored in the data processing device 2. By way of example, Table 1 (the letters in brackets represent units) can be selected as the corrosion rate table. In Table 1, the power-frequency alternating current intensity is classified according to the type of material, namely 30 flat steel current intensity, 40 flat steel current intensity and 60 flat steel current intensity. When specifically looking up the table, the corresponding corrosion rate is matched according to the grounding material of the grounding grid and the measured power-frequency alternating current intensity. For example, when the grounding material of the grounding grid is 30 flat steel, if the AC Hall sensor 20 measures that the power-frequency alternating current intensity injected by the device 3 above the grounding grid into the grounding grid main grid 5 is 0.680A, then the corresponding corrosion rate can be obtained by looking up Table 1 as 0.0059mma.

[0051] Table 1:

[0052]

[0053]

[0054]

[0055] In the embodiment of the present invention, the corrosion rate table is determined through experimental research results, which can ensure the accuracy of corrosion rate determination.

[0056] It should be noted that the corrosion rate table may also be determined based on historical corrosion rate data.

[0057] In one possible implementation, Figure 2 As shown, the ground current monitoring device 1 further includes a housing 40; the DC zero-resistance ammeter 10, the AC Hall sensor 20 and the data acquisition and transmission module 30 are arranged in the housing 40. For example, the housing 40 is Figure 2 The box structure shown. One end of the DC zero-resistance ammeter 10 is connected to the grounding electrode adapter plate 7 at one end of the grounding down conductor 4, and the other end of the grounding down conductor 4 is connected to the grounding pin 8 of the device 3 above the grounding network. The AC Hall sensor 20 is located on the right side of the DC zero-resistance ammeter 10, which is sleeved on the cable and connected to the grounding main network 5 through the grounding up conductor 6. Among them, the AC Hall sensor 20 of appropriate aperture can be sleeved according to the size of the cable and the housing 40.

[0058] The embodiment of the present invention realizes the wiring of the ground current monitoring device 1, and the wiring method is simple and convenient. In the embodiment of the present invention, the DC zero-resistance ammeter 10 is connected in series between the equipment 3 above the grounding grid and the main grounding grid 5. The extremely low input resistance of the DC zero-resistance ammeter 10 is used to achieve extremely low internal resistance current measurement, thereby accurately measuring the DC current intensity from the grounding down lead 4 to the main grounding grid 5; an AC Hall sensor 20 with an appropriate aperture is put on the cable, and the sensing data of the AC Hall sensor 20 can be used to accurately measure the industrial frequency AC current intensity on the cable. Since the cable connects the equipment 3 above the grounding grid and the main grounding grid 5, the measured industrial frequency AC current intensity also represents the industrial frequency AC current intensity injected by the equipment 3 above the grounding grid into the main grounding grid 5.

[0059] In an achievable manner, the data processing device 2 is further used to upload the obtained ground current corrosion data to a preset terminal, wherein the ground current corrosion data includes the grounding grid grounding electrode corrosion rate.

[0060] Through this preset terminal, the ground current corrosion data can be further processed to achieve functions such as life prediction and corrosion warning of grounding grid materials.

[0061] The invention also provides a method for testing the corrosiveness of the ground current of the power grounding.

[0062] See also Figure 3 , Figure 3 A flow chart of a method for testing the corrosiveness of an electric power grounding current provided by an embodiment of the present invention is shown.

[0063] A method for testing the corrosiveness of an electric power grounding current provided by an embodiment of the present invention includes:

[0064] Step S1, receiving the current intensity monitoring data transmitted by the ground current monitoring device 1; the ground current monitoring device 1 comprises a DC zero-resistance ammeter 10, an AC Hall sensor 20 and a data acquisition and transmission module 30, the DC zero-resistance ammeter 10 and the AC Hall sensor 20 are both connected to the data acquisition and transmission module 30; one end of the DC zero-resistance ammeter 10 is connected to the grounding down conductor 4 connected to the upper device 3 of the grounding network through a cable, the other end of the DC zero-resistance ammeter 10 is connected to the grounding up conductor 6 connected to the grounding main network 5 through a cable, and the AC Hall sensor 20 is sleeved on the cable and located between the grounding down conductor 4 and the grounding up conductor 6;

[0065] Step S2, when the current intensity monitoring data is the DC current intensity injected by the device 3 above the grounding grid into the grounding grid main grid 5 measured by the DC zero-resistance ammeter 10, the corresponding grounding grid grounding electrode corrosion rate is calculated using Faraday's law according to the DC current intensity; when the current intensity monitoring data is the industrial frequency AC current intensity injected by the device 3 above the grounding grid into the grounding grid main grid 5 measured by the AC Hall sensor 20, the stored corrosion rate table is queried according to the industrial frequency AC current intensity to obtain the corresponding grounding grid grounding electrode corrosion rate; wherein the corrosion rate table is provided with grounding grid grounding electrode corrosion rates corresponding to different industrial frequency AC current intensities.

[0066] In one achievable manner, the calculating the corresponding grounding grid grounding electrode corrosion rate according to the DC current intensity using Faraday's law includes:

[0067] Calculate the corresponding grounding grid grounding electrode corrosion rate according to the following formula:

[0068]

[0069] Wherein, γ is the corresponding grounding grid grounding electrode corrosion rate, A is the atomic weight of the grounding grid grounding material, I is the DC current intensity injected by the DC zero-resistance ammeter 10 from the equipment 3 above the grounding grid to the grounding grid main grid 5, n is the valence of the grounding grid grounding material, and S is the cross-sectional area of ​​the grounding grid grounding material.

[0070] In the above-mentioned embodiment of the present invention, a DC zero-resistance ammeter 10 and an AC Hall sensor 20 are used to measure the DC and industrial frequency AC current intensity injected by the power equipment into the power grounding grid, and the corrosion effect caused by the grounding current is evaluated accordingly. The online in-situ measurement of the DC and industrial frequency AC current intensity injected by the power equipment into the grounding grid can be realized, and two sets of data can be obtained at the same time. The data can be transmitted to a host computer for long-term data accumulation, which is convenient for later data application. Through the method of the above-mentioned embodiment of the present invention, the corrosion rate of the grounding electrode caused by the DC and industrial frequency AC current intensity can be accurately evaluated, and the method is simple and convenient.

[0071] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A system for testing the corrosiveness of electric grounding current, characterized in that: It includes a ground current monitoring device and a data processing device; The ground current monitoring device comprises a DC zero-resistance ammeter, an AC Hall sensor and a data acquisition and transmission module, wherein the DC zero-resistance ammeter and the AC Hall sensor are both connected to the data acquisition and transmission module; one end of the DC zero-resistance ammeter is connected to a grounding lead connected to the equipment above the grounding network through a cable, and the other end of the DC zero-resistance ammeter is connected to a grounding lead connected to the main network of the grounding network through a cable, and the AC Hall sensor is sleeved on the cable and located between the grounding lead and the grounding lead; The data processing device is connected to the data acquisition and transmission module; the data processing device is used to calculate the corresponding grounding grid grounding electrode corrosion rate using Faraday's law when the DC zero-resistance ammeter measures the DC current intensity injected by the equipment above the grounding grid into the grounding grid main grid, and, when the AC Hall sensor measures the industrial frequency AC current intensity injected by the equipment above the grounding grid into the grounding grid main grid, query the stored corrosion rate table according to the industrial frequency AC current intensity to obtain the corresponding grounding grid grounding electrode corrosion rate; wherein the corrosion rate table is provided with grounding grid grounding electrode corrosion rates corresponding to different industrial frequency AC current intensities; When the data processing device calculates the corresponding grounding grid grounding electrode corrosion rate according to the DC current intensity using Faraday's law, it is specifically used to: Calculate the corresponding grounding grid grounding electrode corrosion rate according to the following formula: Wherein, γ is the corresponding grounding grid grounding electrode corrosion rate, A is the atomic weight of the grounding material of the grounding grid, I is the DC current intensity injected into the grounding grid main grid by the equipment above the grounding grid measured by the DC zero-resistance ammeter, n is the valence of the grounding material of the grounding grid, and S is the cross-sectional area of ​​the grounding material of the grounding grid.

2. The system for testing the corrosiveness of electric grounding current according to claim 1, characterized in that: One end of the DC zero-resistance ammeter is connected to the grounding electrode adapter plate at one end of the grounding down conductor, and the other end of the grounding down conductor is connected to the grounding pin of the equipment above the grounding grid.

3. The system for testing the corrosiveness of electric grounding current according to claim 1, characterized in that: The underground current monitoring device also includes a shell; the DC zero-resistance ammeter, AC Hall sensor and data acquisition and transmission module are arranged in the shell.

4. The system for testing the corrosiveness of electric grounding current according to claim 3, characterized in that: The shell is a box structure.

5. The system for testing the corrosiveness of electric grounding current according to claim 1, characterized in that: The data processing device is also used to upload the obtained ground current corrosion data to a preset terminal, wherein the ground current corrosion data includes the grounding grid grounding electrode corrosion rate.

6. A method for testing the corrosiveness of electric grounding current, characterized in that: The method comprises: Receive current intensity monitoring data transmitted by an underground current monitoring device; the underground current monitoring device includes a DC zero-resistance ammeter, an AC Hall sensor and a data acquisition and transmission module, and the DC zero-resistance ammeter and the AC Hall sensor are both connected to the data acquisition and transmission module; one end of the DC zero-resistance ammeter is connected to a grounding lead connected to a device above the grounding grid through a cable, and the other end of the DC zero-resistance ammeter is connected to a grounding lead connected to a main grid of the grounding grid through a cable, and the AC Hall sensor is sleeved on the cable and located between the grounding lead and the grounding lead; When the current intensity monitoring data is the DC current intensity injected by the equipment above the grounding grid into the grounding grid main grid measured by the DC zero-resistance ammeter, the corresponding grounding grid grounding electrode corrosion rate is calculated using Faraday's law according to the DC current intensity; when the current intensity monitoring data is the industrial frequency AC current intensity injected by the equipment above the grounding grid into the grounding grid main grid measured by the AC Hall sensor, the stored corrosion rate table is queried according to the industrial frequency AC current intensity to obtain the corresponding grounding grid grounding electrode corrosion rate; wherein the corrosion rate table is provided with grounding grid grounding electrode corrosion rates corresponding to different industrial frequency AC current intensities; The method of calculating the corresponding grounding grid grounding electrode corrosion rate according to the DC current intensity using Faraday's law includes: Calculate the corresponding grounding grid grounding electrode corrosion rate according to the following formula: Wherein, γ is the corresponding grounding grid grounding electrode corrosion rate, A is the atomic weight of the grounding material of the grounding grid, I is the DC current intensity injected into the grounding grid main grid by the equipment above the grounding grid measured by the DC zero-resistance ammeter, n is the valence of the grounding material of the grounding grid, and S is the cross-sectional area of ​​the grounding material of the grounding grid.

7. A device for testing the corrosiveness of electric grounding current, characterized in that: include: A memory for storing instructions; wherein the instructions are used to implement the method for testing the corrosiveness of electric grounding current according to claim 6; A processor is used to execute instructions in the memory.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method for testing the corrosiveness of electric grounding current as claimed in claim 6 is implemented.

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