Tower grounding electrode visual detection system and grounding electrode integrity judgment method

Abstract

The invention discloses a tower grounding electrode visual detection system and a grounding electrode integrity judgment method, and mainly relates to the technical field of tower grounding electrode detection. Comprising a CPU processing module, a power supply module, an AC voltage signal generation module, a current acquisition module, an AD acquisition module, a communication module, a compensation resistor module and a grounding electrode connection module, the CPU processing module is in data connection with the AC voltage signal generation module, the AD acquisition module, the communication module and the compensation resistor module, and the CPU processing module is electrically connected with the power supply module. The method has the beneficial effects that line project acceptance can be realized, the integrity of all tower grounding electrodes can be accepted, and meanwhile, the labor cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of pole tower grounding electrode detection, in particular to a pole tower grounding electrode visualization detection system and a grounding electrode integrity judgment method. Background Art

[0002] During the acceptance of line projects, the common practice for the grounding poles of pole towers is to randomly select some pole towers, and the construction unit will arrange workers to dig up the connection between the grounding lead and the grounding device. The acceptance personnel will check the welding and anti-corrosion conditions of the connection on site.

[0003] This method is not only time-consuming and labor-intensive, but also unable to grasp the specific grounding conditions of the entire grounding device and other unselected towers, and unable to comprehensively and intuitively judge the quality of the grounding project construction, thus laying hidden safety hazards for the operation of the project after it is put into operation.

[0004] Therefore, there is an urgent need for a tower grounding electrode visualization detection system and a grounding electrode integrity judgment method to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a tower grounding electrode visualization detection system and a grounding electrode integrity judgment method, which can realize the acceptance of the integrity of all tower grounding electrodes during line engineering acceptance and reduce labor costs.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0007] On the one hand, a pole tower grounding electrode visualization detection system is provided, including a CPU processing module, a power supply module, an AC voltage signal generating module, a current acquisition module, an AD acquisition module, a communication module, a compensation resistance module and a grounding electrode connection module, wherein the current acquisition module is data-connected with the AD acquisition module, the CPU processing module is data-connected with the AC voltage signal generating module, the AD acquisition module, the communication module and the compensation resistance module respectively, and the CPU processing module is electrically connected with the power supply module.

[0008] Preferably, the CPU processing module is used for signal generation control and signal acquisition;

[0009] The power supply module is used to provide power to the CPU processing module, and is powered by a battery, specifically a lithium battery or a lead-acid battery;

[0010] The AC voltage signal generating module is used to apply high voltage to the tower grounding electrode, and then measure the AC current signal flowing through the grounding down conductors on both diagonal sides of the tower;

[0011] The current acquisition module is used to acquire current signals passing through both sides of the AC voltage signal;

[0012] The AD acquisition module is used to filter, amplify and AD convert the analog quantity collected by the current acquisition module, and transmit the digital quantity signal to the CPU processing module;

[0013] The communication module is used to transmit the collected current signal to the background of the visualization detection system;

[0014] The compensation resistor module is used to be connected in series with the AC voltage signal generating module loop;

[0015] The grounding electrode connection module is used to connect the grounding down conductor at the diagonal side of the tower.

[0016] Preferably, the grounding electrode connection module includes a magnetic connector, which is a cylindrical structure. A fixing bolt is arranged inside the magnetic connector, and the fixing bolt passes through the peripheral wall of the magnetic connector and is arranged vertically to the magnetic connector. The bottom end of the magnetic connector is connected to a cable connector.

[0017] On the other hand, a method for determining the integrity of a grounding electrode applied to the above-mentioned tower grounding electrode visualization detection system is also provided, comprising the following steps:

[0018] S1: Input the data information of grounding electrode material, grounding electrode length, grounding electrode diameter, grounding electrode connection relationship and grounding electrode welding point number;

[0019] S2: Calculate the theoretical resistance value of the grounding electrode according to the input multi-dimensional data information of the grounding electrode;

[0020] S3: Disconnect the connecting bolts between the grounding down conductor and the tower;

[0021] S4: The grounding electrode connection module is attached to the grounding down conductors on both sides of the tower through the magnetic suction joint;

[0022] S5: AC voltage signal applies AC voltage;

[0023] S6: The current acquisition module obtains the current waveform signal in the loop;

[0024] S7: The communication module transmits the acquired current waveform signal back to the background of the visualization detection system;

[0025] S8: The background of the visual detection system compares the collected values ​​with the calculated values ​​according to the input grounding electrode model to determine the integrity of the grounding electrode.

[0026] Preferably, a multi-dimensional data model of the tower grounding electrode is established in the background of the visual detection system, and the integrity of the grounding electrode is calculated through the multi-dimensional data model of the tower grounding electrode.

[0027] Preferably, the calculating of the grounding electrode integrity through the tower grounding electrode multidimensional data model specifically includes:

[0028] Obtain the material, length, diameter, connection relationship and welding points of the tower grounding electrode, where the material of the grounding electrode includes steel and copper, and the connection relationship of the grounding electrode is rectangular or circular;

[0029] The tower grounding electrode connection visualization module is used to draw the connection relationship of the grounding electrode;

[0030] The on-resistance value R of the grounding electrode can be calculated according to the multi-dimensional data model of the tower grounding electrode. The calculation formula is as follows, where the grounding electrode is calculated based on the resistivity ρ of the material, the length L of the grounding electrode, the cross-sectional area A of the grounding electrode, and the number of welding points. The resistance value of the welding point is assumed to be R W ;

[0031]

[0032] The loop collection value obtained by the system background is set to R C , then the acquisition value of the measured grounding electrode loop is:

[0033] R S =R C -R0

[0034] Among them, R0 is the compensation resistance module;

[0035] The system background determines the integrity of the grounding electrode based on the comparison results:

[0036] when Determine whether the grounding electrode is intact;

[0037] when Determine whether the grounding pole is connected;

[0038] when Determine whether there is a cold solder joint in the grounding electrode.

[0039] Compared with the prior art, the beneficial effects of the present invention are:

[0040] 1. Solved the problem that the line project acceptance cannot inspect the integrity of all tower grounding electrodes;

[0041] 2. It solves the problem of time-consuming and laborious manual inspection of the grounding electrodes of line towers after digging them up. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the system structure of the present invention;

[0043] Figure 2 It is a schematic diagram of the structure of the grounding electrode connection module of the present invention;

[0044] Figure 3It is a schematic diagram of the connection relationship of the measuring circuit of the present invention;

[0045] Figure 4 It is a flow chart of the method of the present invention.

[0046] Numbers shown in the accompanying drawings:

[0047] 1. Magnetic connector; 2. Fixing bolt; 3. Cable connector. DETAILED DESCRIPTION

[0048] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0049] In the present invention, terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are relational words determined only for the convenience of describing the structural relationships of the various parts or elements of the present invention, and do not specifically refer to any part or element in the present invention and should not be understood as limitations on the present invention.

[0050] In the present invention, terms such as "fixed connection", "connected", "connection", etc. should be understood in a broad sense, indicating that it can be fixedly connected, integrally connected or detachably connected; it can be directly connected or indirectly connected through an intermediate medium. Relevant scientific research or technical personnel in this field can determine the specific meanings of the above terms in the present invention according to specific circumstances, and they should not be understood as limiting the present invention.

[0051] Example:

[0052] like Figure 1 As shown, this embodiment provides a tower grounding electrode visualization detection system, including a CPU processing module, a power supply module, an AC voltage signal generating module, a current acquisition module, an AD acquisition module, a communication module, a compensation resistance module and a grounding electrode connection module, wherein the current acquisition module is data-connected with the AD acquisition module, the CPU processing module is data-connected with the AC voltage signal generating module, the AD acquisition module, the communication module and the compensation resistance module respectively, and the CPU processing module is electrically connected with the power supply module.

[0053] Wherein, the CPU processing module is used for signal generation control and signal acquisition;

[0054] The power supply module is used to provide power to the CPU processing module, and is powered by a battery, specifically a lithium battery or a lead-acid battery;

[0055] The AC voltage signal generating module is used to apply high voltage to the tower grounding electrode, and then measure the AC current signal flowing through the grounding down conductors on both sides of the tower diagonal, providing a data basis for the tower grounding electrode detection and analysis;

[0056] The current acquisition module is used to acquire current signals passing through both sides of the AC voltage signal. In this embodiment, a shunt is used to perform current acquisition and measurement.

[0057] The AD acquisition module is used to filter, amplify and AD convert the analog quantity collected by the current acquisition module, and transmit the digital quantity signal to the CPU processing module;

[0058] The communication module is used to transmit the collected current signal to the background of the visualization detection system, which can adopt wireless communication such as 4G and 5G, or wired communication such as RS485 and RS232;

[0059] The compensation resistor module is used to be connected in series with the AC voltage signal generating module loop;

[0060] The grounding electrode connection module is used to connect the grounding down conductor on the diagonal side of the tower. Figure 2 As shown, for the convenience of on-site installation, a conductive magnetic attraction structure is used to connect the grounding down conductor, and the magnet is connected to the base of the grounding electrode connection module through a perforated screw. The magnet can be made of neodymium iron boron magnet, samarium cobalt magnet, aluminum nickel cobalt magnet, or iron chromium cobalt magnet. The grounding down conductors on both sides are connected to the AC voltage signal generation module through connectors and wires.

[0061] The connection relationship of the specific measurement circuit is as follows Figure 3 shown.

[0062] like Figure 4 As shown, this embodiment also provides a method for determining the integrity of a grounding electrode applied to the above-mentioned tower grounding electrode visualization detection system, comprising the following steps:

[0063] S1: Before measuring, input the grounding electrode material, grounding electrode length, grounding electrode diameter, grounding electrode connection relationship and grounding electrode welding point number according to the drawing;

[0064] S2: The system background calculates the theoretical resistance value of the grounding electrode based on the input multi-dimensional data model of the grounding electrode.

[0065] S3: Disconnect the connecting bolts between the grounding down conductor and the tower;

[0066] S4: The grounding electrode connection module is adsorbed on the grounding down conductors on both sides of the tower through the magnetic suction unit;

[0067] S5: AC voltage signal applies AC voltage;

[0068] S6: The current acquisition module obtains the current waveform signal in the loop;

[0069] S7: The communication acquisition unit transmits the acquired current waveform signal back to the background of the visualization detection system;

[0070] S8: The background of the visual detection system compares the collected values ​​with the calculated values ​​according to the input grounding electrode model to determine the integrity of the grounding electrode.

[0071] The background of the visual detection system of the tower grounding electrode is equipped with a multi-dimensional data model of the tower grounding electrode, a tower grounding electrode connection visualization module, a tower grounding electrode resistance calculation and analysis module, and a tower grounding electrode integrity result display module.

[0072] The data of the multi-dimensional data model of the tower grounding electrode comes from the construction design drawings and completion establishment of the tower grounding electrode. The tower grounding electrode material, grounding electrode length, grounding electrode diameter, grounding electrode connection relationship and grounding electrode welding point number are obtained through the drawings. The grounding electrode material includes steel and copper, and the grounding electrode connection relationship is rectangular or circular, as shown in Table 1.

[0073] Table 1 Multidimensional data model table of tower grounding electrode

[0074] Serial number Data Types Data Source Representative symbol 1. Tower grounding electrode material Design drawings M 2. Grounding electrode length As-built drawings L 3. Grounding electrode diameter As-built drawings D 4. Grounding electrode connection relationship As-built drawings / 5. Number of ground electrode welding points As-built drawings N, N is much greater than 1

[0075] The tower grounding electrode connection visualization module is drawn according to the grounding electrode connection relationship in the completion drawing.

[0076] The tower grounding electrode resistance calculation and analysis module can calculate the on-resistance value R of the grounding electrode according to the multi-dimensional data model of the tower grounding electrode. The calculation formula is as follows, where the grounding electrode is calculated based on the resistivity ρ of the material, the length L of the grounding electrode, the cross-sectional area A of the grounding electrode, and the number of welding points, where the resistance value of the welding point is set to R W .

[0077]

[0078] The loop collection value obtained by the system background is set to R C , then the acquisition value of the measured grounding electrode loop is:

[0079] R S =R C -R0

[0080] Among them, R0 is the compensation resistance module;

[0081] The system background determines the integrity of the grounding electrode based on the comparison results:

[0082] when Determine whether the grounding electrode is intact;

[0083] when Determine whether the grounding pole is connected;

[0084] when Determine whether there is a cold solder joint in the grounding electrode.

[0085] The above is a specific description of the preferred implementation of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A tower grounding electrode visualization detection system, characterized in that: It includes a CPU processing module, a power supply module, an AC voltage signal generating module, a current acquisition module, an AD acquisition module, a communication module, a compensation resistance module and a grounding electrode connection module. The current acquisition module is data-connected with the AD acquisition module, the CPU processing module is data-connected with the AC voltage signal generating module, the AD acquisition module, the communication module and the compensation resistance module respectively, and the CPU processing module is electrically connected with the power supply module.

2. According to claim 1, a tower grounding electrode visualization detection system is characterized in that: The CPU processing module is used for signal generation control and signal acquisition; The power supply module is used to provide power to the CPU processing module, and is powered by a battery, specifically a lithium battery or a lead-acid battery; The AC voltage signal generating module is used to apply high voltage to the tower grounding electrode, and then measure the AC current signal flowing through the grounding down conductors on both diagonal sides of the tower; The current acquisition module is used to acquire current signals passing through both sides of the AC voltage signal; The AD acquisition module is used to filter, amplify and AD convert the analog quantity collected by the current acquisition module, and transmit the digital quantity signal to the CPU processing module; The communication module is used to transmit the collected current signal to the background of the visualization detection system; The compensation resistor module is used to be connected in series with the AC voltage signal generating module loop; The grounding electrode connection module is used to connect the grounding down conductor at the diagonal side of the tower.

3. According to claim 2, a tower grounding electrode visualization detection system is characterized in that: The grounding electrode connection module includes a magnetic joint, which is a cylindrical structure. A fixing bolt is arranged inside the magnetic joint. The fixing bolt passes through the peripheral wall of the magnetic joint and is arranged vertically to the magnetic joint. The bottom end of the magnetic joint is connected to a cable connector.

4. A method for determining the integrity of a grounding electrode applied to the tower grounding electrode visualization detection system according to claim 1, characterized in that: The following steps are involved: S1: Input the data information of grounding electrode material, grounding electrode length, grounding electrode diameter, grounding electrode connection relationship and grounding electrode welding point number; S2: Calculate the theoretical resistance value of the grounding electrode according to the input multi-dimensional data information of the grounding electrode; S3: Disconnect the connecting bolts between the grounding down conductor and the tower; S4: The grounding electrode connection module is attached to the grounding down conductors on both sides of the tower through the magnetic suction joint; S5: AC voltage signal applies AC voltage; S6: The current acquisition module obtains the current waveform signal in the loop; S7: The communication module transmits the acquired current waveform signal back to the background of the visualization detection system; S8: The background of the visual detection system compares the collected values ​​with the calculated values ​​according to the input grounding electrode model to determine the integrity of the grounding electrode.

5. A method for determining the integrity of a grounding electrode according to claim 4, characterized in that: The background of the visual detection system establishes a multi-dimensional data model of the pole tower grounding electrode, and calculates the grounding electrode integrity through the multi-dimensional data model of the pole tower grounding electrode.

6. A method for determining the integrity of a grounding electrode according to claim 5, characterized in that: The calculation of grounding electrode integrity by using the tower grounding electrode multidimensional data model specifically includes: Obtain the material, length, diameter, connection relationship and welding points of the tower grounding electrode, where the material of the grounding electrode includes steel and copper, and the connection relationship of the grounding electrode is rectangular or circular; The tower grounding electrode connection visualization module is used to draw the connection relationship of the grounding electrode; The on-resistance value R of the grounding electrode can be calculated according to the multi-dimensional data model of the tower grounding electrode. The calculation formula is as follows, where the grounding electrode is calculated based on the resistivity ρ of the material, the length L of the grounding electrode, the cross-sectional area A of the grounding electrode, and the number of welding points. The resistance value of the welding point is assumed to be R W ; The loop collection value obtained by the system background is set to R C , then the acquisition value of the measured grounding electrode loop is: R S =R C -R0 Among them, R0 is the compensation resistance module; The system background determines the integrity of the grounding electrode based on the comparison results: when Determine whether the grounding electrode is intact; when Determine whether the grounding pole is connected; when Determine whether there is a cold solder joint in the grounding electrode.

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