Lightning protection grounding device for wind power plant

Abstract

The invention discloses a lightning protection grounding device for a wind power plant, and relates to the technical field of lightning protection grounding devices, the lightning protection grounding device specifically comprises a lightning arrester, a down lead and a grounding body, the grounding body comprises a lightning protection grounding grid, an artificial electrode and a supporting assembly, the artificial electrode and the supporting assembly are connected with the lightning protection grounding grid, and the lightning protection grounding grid is connected with the lightning arrester through the down lead. The supporting assembly comprises a main supporting body, the middle of the top of the main supporting body is detachably connected with an artificial electrode, the top of the main supporting body is provided with a positioning and fixing part, and the artificial electrode is detachably connected with the positioning and fixing part through a fixing plate; the positioning and fixing part comprises a first hollow pipe, a second hollow pipe and a third hollow pipe. According to the invention, the protection structure is utilized, and the reliability of the connection between the lightning rod and the downlead is improved by isolating the external environment, carrying out space limiting on the lightning rod and actively absorbing the vibration of the lightning rod, so that the use reliability of the device is improved.

Description

Technical Field

[0001] This invention relates to the field of lightning protection grounding devices, specifically a lightning protection grounding device for wind farms. Background Technology

[0002] With the rapid development of the new energy industry, wind power, as an important form of clean and renewable energy utilization, has seen its installed capacity continue to grow globally. Wind farms are mostly located in open areas such as mountains, grasslands, and coastlines. These areas are characterized by open terrain, high altitude, and frequent severe convective weather, leading to extremely high lightning strike risks for wind turbines. As towering steel structures, wind turbines typically range in height from 80 to 200 meters. The large space created by the rotating blades makes them highly susceptible to lightning strikes. Therefore, reliable lightning protection grounding devices are indispensable and crucial safety features during the construction and operation of wind farms.

[0003] In existing technologies, commonly used lightning protection grounding devices in wind farms typically include lightning rods, down conductors, and grounding electrodes. Among these, the artificial electrodes contained in the grounding electrodes need to be buried in the soil at a specified depth to achieve effective grounding. However, during the construction phase, the electrodes need to penetrate different media (such as topsoil, rock, and gravel layers). The impedance of each medium to the electrodes varies significantly, which can easily lead to uneven stress on the electrodes, resulting in bending and deformation of the rod. During long-term operation, environmental factors such as soil frost heave and thaw settlement, and salt erosion will continuously act on the electrodes, which may not only cause deterioration of the electrode material but also induce structural deformation. Electrode deformation will directly reduce its effective contact area with the soil, weakening or even eliminating the "lightning current dissipation capability" of the lightning protection grounding system, and in severe cases, causing the grounding resistance to exceed the standard. Furthermore, once the electrodes are buried underground, they are difficult to detect due to soil encapsulation and restrictions imposed by surrounding structures, resulting in extremely high maintenance costs.

[0004] In addition, as the "front-end lightning attractor" of the lightning protection system, the lightning arrester is usually installed on the top of the wind turbine nacelle or high on the tower. Its height and installation angle need to be precisely matched with the lightning protection range. However, under severe weather conditions such as strong winds and turbulence, the lightning arrester is prone to shaking, which aggravates the mechanical stress at the connection between the lightning arrester and the down conductor. This may lead to problems such as cracking of the weld and loosening of bolts, which significantly reduces the reliability of the connection between the two. At the same time, the environment is prone to corrosion of the connection, further reducing the reliability of the connection between the two.

[0005] Based on this, this application proposes a lightning protection grounding device for wind farms. Summary of the Invention

[0006] This invention provides a lightning protection grounding device for wind farms, which has the following advantages: by isolating the external environment, spatially limiting the lightning rod, and actively absorbing the vibration of the lightning rod, the reliability of the connection between the lightning rod and the down conductor is improved, thereby improving the reliability of the device; the support structure is used to support the artificial electrode, reducing the probability of deformation of the artificial electrode, and a channel for injecting resistance-reducing agent and moving the non-contact detection equipment of the artificial electrode is reserved, improving the uniformity of resistance-reducing agent injection, ensuring that the chemical resistance-reducing medium can fully fill the contact blind zone, reducing the contact resistance of the electrode-soil interface, improving the efficiency of lightning current discharge, improving the convenience of artificial electrode detection, reducing operation and maintenance costs, and solving the problems mentioned in the background art.

[0007] This invention provides the following technical solution: a lightning protection grounding device for wind farms, comprising a lightning arrester, a down conductor, and a grounding body. The grounding body includes a lightning protection grounding grid, an artificial electrode connected to the lightning protection grounding grid, and a support assembly. The lightning protection grounding grid is connected to the lightning arrester via the down conductor. The support assembly includes a main support body, with an artificial electrode detachably connected to the middle of the top of the main support body. A positioning and fixing component is provided on the top of the main support body. The artificial electrode and the positioning and fixing component are detachably connected via a fixing plate. The positioning and fixing component includes a first hollow tube, a second hollow tube, and a third hollow tube. Injection holes are evenly distributed on the side wall of the second hollow tube where it is inserted into the soil. A resistance-reducing agent injected into the second hollow tube is discharged through the injection holes, thereby encapsulating the artificial electrode and the positioning and fixing component. A lifting plate is movably connected to the inner cavity of the third hollow tube, and the lifting plate is connected to the third hollow tube via a lifting assembly.

[0008] Preferably, the lightning arrester includes a connecting bracket and a lightning rod connected to the top of the connecting bracket. The lightning rod is connected to the end of the down conductor away from the lightning protection grounding network, and the connection part between the lightning rod and the down conductor is wrapped by a protective structure.

[0009] Preferably, the protective structure includes an upper shield fixedly connected to the lightning rod and a limiting protective cover detachably connected to the top of the connecting bracket; the upper shield is located above the limiting protective cover, the top end of the limiting protective cover extends into the inner cavity of the upper shield, and the upper shield and the limiting protective cover are sealed by a first sealing ring; the limiting protective cover wraps around the connection between the lightning rod and the down conductor, the lightning rod is located in the middle of the inner cavity of the limiting protective cover, and the limiting protective cover and the lightning rod are sealed by a second sealing ring.

[0010] Preferably, the sealing surface of the first sealing ring adopts a stepped structure design.

[0011] Preferably, the limiting protective cover includes two covers that are detachably connected. Fixing blocks are provided on both sides of the bottom of each cover. A clamping cavity adapted to the connecting bracket is formed between the two fixing blocks in the cover. A second sealing ring is connected to the top and bottom of the inner cavity of the cover.

[0012] Preferably, the top ends of the first hollow tube, the second hollow tube, and the third hollow tube are all detachably connected with sealing caps.

[0013] Preferably, the lifting assembly includes a lower synchronous wheel movably connected to the bottom end of the inner cavity of the third hollow tube, a support frame movably connected to the top of the third hollow tube, an upper synchronous wheel movably connected to the support frame, and a synchronous chain. The lower synchronous wheel and the upper synchronous wheel are connected by a synchronous chain drive. The lifting plate is connected to the side of the synchronous chain near the artificial electrode. One end of the shaft of the upper synchronous wheel is connected to a fixed plate.

[0014] Preferably, the main support body is a hollow structure, and a hydraulic telescopic rod is connected to the inner cavity of the main support body. A pick is connected to the end of the output shaft of the hydraulic telescopic rod. The pick is movably connected to the inner cavity of the main support body, and the bottom end of the pick extends to the outside of the main support body.

[0015] Preferably, the top of the positioning and fixing component is connected to a fixing frame, and the top of the positioning and fixing component is located above the ground.

[0016] Preferably, conductive paste is applied between the artificial electrode and the fixing plate, and between the positioning and fixing component and the fixing plate.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. This lightning protection grounding device for wind farms utilizes a protective structure to improve the reliability of the connection between the lightning rod and the down conductor by isolating the external environment, spatially limiting the lightning rod, and actively absorbing the vibration of the lightning rod. This improves the reliability of the device and ensures the safety of the wind farm.

[0018] 2. This lightning protection grounding device for wind farms utilizes a support structure to support the artificial electrode, ensuring uniform force distribution during insertion and reducing the probability of deformation. In use, the support structure disperses soil lateral pressure and the self-weight of the artificial electrode, providing stable mechanical support to reduce deformation during deep burial, maintain the long-term stability of the grounding electrode, and ensure a tight seal between the electrode and the soil, thus guaranteeing the device's effectiveness.

[0019] 3. The lightning protection grounding device used in wind farms has reserved channels for injecting resistance-reducing agents and channels for moving non-contact testing equipment for artificial electrodes. This improves the uniformity of resistance-reducing agent injection, ensures that the chemical resistance-reducing medium can fully fill the contact blind zone, reduce the contact resistance at the electrode-soil interface, improve the efficiency of lightning current discharge, enhance the convenience of artificial electrode testing, and reduce operation and maintenance costs. Attached Figure Description

[0020] Figure 1 This is a three-dimensional schematic diagram of a lightning protection grounding device for wind farms proposed in this invention. Figure 2 This is a schematic diagram of the lightning arrester structure of the present invention; Figure 3 This is a schematic cross-sectional view of the structural protection structure of the present invention; Figure 4 This is a schematic diagram showing the connection between the structural support structure and the artificial electrode of the present invention; Figure 5 The structure of this invention Figure 4 Explosion diagram; Figure 6 This is a partially enlarged schematic diagram of the third hollow tube in the structure of the present invention.

[0021] In the diagram: 1. Connecting bracket; 2. Lightning rod; 3. Down conductor; 4. Lightning protection grounding grid; 5. Main support body; 6. Artificial electrode; 7. Fixing plate; 8. Upper shield; 9. Cover body; 10. Fixing block; 11. First sealing ring; 12. Second sealing ring; 13. Pick; 14. First hollow tube; 15. Second hollow tube; 16. Fixing frame; 17. Third hollow tube; 18. Sealing cover; 19. Hydraulic telescopic rod; 20. Upper synchronous pulley; 21. Fixing disc; 22. Synchronous chain; 23. Lifting plate; 24. Support frame. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] This invention provides one embodiment: Please refer to Figures 1-6A lightning protection grounding device for wind farms includes a lightning arrester, a down conductor 3, and a grounding electrode. The lightning arrester includes a connecting bracket 1 and a lightning rod 2 connected to the top of the connecting bracket 1. The lightning rod 2 is fixed at a suitable location in the wind farm via the connecting bracket 1. One end of the lightning rod 2 is connected to the down conductor 3. The connection between the lightning rod 2 and the down conductor 3 is wrapped by a protective structure. The protective structure protects the connection between the lightning rod 2 and the down conductor 3, isolates the connection from external environmental erosion, and improves the reliability of the connection between the lightning rod 2 and the down conductor 3.

[0024] The protective structure includes an upper shield 8 fixedly connected to the lightning rod 2 and a limiting protective cover detachably connected to the top of the connecting bracket 1. The bottom of the upper shield 8 has an opening, and the upper shield 8 is located above the limiting protective cover. The top of the limiting protective cover extends into the inner cavity of the upper shield 8, and the upper shield 8 and the limiting protective cover are sealed by a first sealing ring 11. The limiting protective cover wraps around the connection between the lightning rod 2 and the down conductor 3. The lightning rod 2 is located in the middle of the inner cavity of the limiting protective cover, and the limiting protective cover and the lightning rod 2 are sealed by a second sealing ring 12.

[0025] The upper shield 8 and the first sealing ring 11 provide protection for the limiting protective cover, effectively blocking external environmental factors from corroding the second sealing ring 12, extending its service life, and improving the sealing performance of the limiting protective cover. This, in turn, enhances the protective effect and reliability of the structure at the connection between the lightning rod 2 and the down conductor 3. The sealing surface of the first sealing ring 11 adopts a stepped structure design, improving the sealing between the upper shield 8 and the limiting protective cover. Furthermore, the resilience of both the first sealing ring 11 and the second sealing ring 12 reduces the vibration of the lightning rod, improves its stability, reduces dynamic stress fluctuations at the connection between the lightning rod 2 and the down conductor 3, and further enhances the reliability of the connection between the lightning rod 2 and the down conductor 3. The materials of the first sealing ring 11 and the second sealing ring 12 can be selected according to requirements and are not limited here.

[0026] The limiting protective cover includes two cover bodies 9, which are detachably connected. When the two cover bodies 9 are connected, they clamp and fix the lightning rod 2. Fixing blocks 10 are provided on both sides of the bottom of each cover body 9. A clamping cavity adapted to the connecting bracket 1 is formed between the two fixing blocks 10 in each cover body 9. A second sealing ring 12 is connected to the top and bottom of the inner cavity of each cover body 9. During installation, the limiting protective cover and the connecting bracket 1 are in a clamped state. The connecting bracket 1 can limit the movement of the limiting protective cover, further reducing the vibration of the lightning rod 2 and improving the stability of the lightning rod 2.

[0027] As can be seen from the above description, when in use, the protective structure improves the reliability of the connection between the lightning rod 2 and the down conductor 3 by isolating the external environment, spatially limiting the lightning rod, and actively absorbing the vibration of the lightning rod, thereby improving the reliability of the device.

[0028] The grounding electrode includes a lightning protection grounding grid 4, an artificial electrode 6 connected to the lightning protection grounding grid 4, and a support assembly. The lightning protection grounding grid 4 is connected to the lightning rod 2 via a down conductor 3. The support assembly includes a main support body 5, which is a hollow structure. A hydraulic telescopic rod 19 is connected to the inner cavity of the main support body 5. A pick 13 is connected to the end of the output shaft of the hydraulic telescopic rod 19. The pick 13 is movably connected to the inner cavity of the main support body 5, and the bottom end of the pick 13 extends to the outside of the main support body 5. When the main support body 5 is inserted into the soil, if it encounters a hard object, the hydraulic telescopic rod 19 drives the pick 13 to quickly impact it. The conical part at the front end of the pick 13 can concentrate the impact energy onto the surface of the hard object. The pick 13 can break the hard object, reduce the insertion resistance of the main support body 5, and thus improve the insertion efficiency of the grounding electrode.

[0029] An artificial electrode 6 is detachably connected to the middle of the top of the main support body 5. A positioning and fixing component is installed on the top of the main support body 5. The artificial electrode 6 and the positioning and fixing component are detachably connected via a fixing plate 7. Conductive grease is applied between the artificial electrode 6 and the fixing plate 7, and between the positioning and fixing component and the fixing plate 7. The application of conductive grease reduces the resistance between the artificial electrode 6 and the fixing plate 7, and also reduces the resistance between the fixing plate 7 and the positioning and fixing component, thereby increasing the lightning discharge speed and ensuring that lightning energy is rapidly and safely conducted to the ground. Ultimately, this significantly improves the overall performance of the grounding device, enhances lightning protection, and ensures the safety of the wind farm. The support components are made of conductive material. The materials of the conductive grease, support components, and fixing plate 7 can be customized according to requirements and are not limited here.

[0030] The positioning and fixing components include a first hollow tube 14, a second hollow tube 15, and a third hollow tube 17. The first hollow tube 14, the second hollow tube 15, and the third hollow tube 17 are located on the outer ring of the top of the main support body 5 and are distributed in a circumferential manner. In use, the oil supply line of the hydraulic telescopic rod 19 is located in the inner cavity of the first hollow tube 14. Through this built-in pipeline layout, the hydraulic fluid can accurately control the movement of the hydraulic telescopic rod 19, ensuring the smoothness and responsiveness of its extension and retraction process. At the same time, the internal space of the first hollow tube 14 is effectively utilized, optimizing the integrated design of the overall device and improving the structural compactness and on-site operation convenience.

[0031] The second hollow tube 15 has injection holes evenly distributed on the side wall of the part inserted into the soil. The resistance-reducing agent injected into the second hollow tube 15 is discharged through the injection holes, thereby wrapping the artificial electrode 6 and the positioning and fixing components. When in use, the resistance-reducing agent is used to fill the gap between the artificial electrode 6 and the support components and the soil, increasing the contact area with the soil, facilitating the discharge of lightning, and ultimately enhancing the reliability and protection effectiveness of the entire lightning protection grounding device.

[0032] A lifting plate 23 is movably connected to the inner cavity of the third hollow tube 17. The lifting plate 23 is connected to the third hollow tube 17 via a lifting assembly. The lifting assembly includes a lower synchronous wheel movably connected to the bottom end of the inner cavity of the third hollow tube 17, a support frame 24 connected to the top of the third hollow tube 17, an upper synchronous wheel 20 movably connected to the support frame 24, and a synchronous chain 22. Both the lower synchronous wheel and the upper synchronous wheel 20 are synchronous sprockets. The lower synchronous wheel and the upper synchronous wheel 20 are connected by a synchronous chain 22. The lifting plate 23 is connected to the side of the synchronous chain 22 closest to the artificial electrode 6. One end of the shaft of the upper synchronous wheel 20 is connected to a fixed plate 21. By setting up the lifting assembly, when the non-contact infrared measuring device (such as an infrared thermal imaging device) for detecting the artificial electrode 6 is connected to the lifting plate 23, the user can control the rotation of the upper synchronous wheel 20 to make the synchronous chain 22 rotate. The rotation of the synchronous chain 22 causes the non-contact infrared measuring device to move inside the third hollow tube 17. During the movement, the non-contact infrared measuring device can realize non-contact detection of the temperature of the artificial electrode 6. The controller of this application can determine the corrosion and deformation of the artificial electrode 6 by observing the temperature of different parts of the artificial electrode 6 when it is powered on, thereby improving the convenience of detecting the artificial electrode 6.

[0033] A fixing bracket 16 is connected to the top of the positioning and fixing component, which is located above the ground. In use, the fixing bracket 16 secures the support component, effectively limiting its spatial position. Rigid constraints significantly suppress vibration amplitude during system operation, thereby significantly reducing stress impact when vibration is transmitted to the electrode and downlead connection points. This protects the mechanical stability and electrical continuity of critical connection nodes and facilitates the location of manual electrodes, improving daily inspection and maintenance efficiency. The fixing bracket 16 is made of conductive material, allowing for flexible configuration as needed. The fixing bracket 16 can also assist in lightning current discharge, further enhancing the overall current-carrying capacity and lightning protection reliability of the device. Furthermore, during the removal of the artificial electrode 6, the extraction force is applied to the support structure, transferring the extraction force that was originally applied directly to the artificial electrode 6 to the stronger support structure. This effectively prevents the artificial electrode 6 from bending, deforming, or having its coating damaged due to excessive local stress (such as single-point pulling). At the same time, the support structure can maintain a stable posture during the stress process, providing a vertical or horizontal guiding path for the artificial electrode 6, reducing friction and jamming between the electrode and soil or gravel, further reducing the removal resistance, and significantly improving the convenience and integrity of removing the artificial electrode 6, thus facilitating its removal.

[0034] The top ends of the first hollow tube 14, the second hollow tube 15, and the third hollow tube 17 are all detachably connected to a sealing cap 18.

[0035] As described above, this application utilizes a support structure to support the artificial electrode 6, ensuring uniform force distribution during insertion and reducing the probability of deformation. In use, the support structure disperses soil lateral pressure and the artificial electrode's own weight, providing stable mechanical support to reduce deformation during deep burial, maintain long-term stability of the grounding electrode, and ensure the electrode-soil contact interface remains tightly fitted, guaranteeing the device's effectiveness. Furthermore, it includes a channel for injecting resistance-reducing agent and a channel for moving non-contact detection equipment, improving the uniformity of resistance-reducing agent injection, ensuring the chemical resistance-reducing medium fully fills the contact blind zone, reducing contact resistance at the electrode-soil interface, improving lightning current discharge efficiency, enhancing the convenience of artificial electrode detection, and reducing maintenance costs.

[0036] In summary, this lightning protection grounding device for wind farms utilizes a support structure to support the artificial electrode 6 during installation. This ensures uniform force distribution on the artificial electrode 6 during insertion into the ground, reducing the probability of deformation. If a hard object hinders insertion, the hydraulic telescopic rod 19 drives the pick 13 to rapidly impact the object. The conical tip of the pick 13 concentrates the impact energy onto the surface of the hard object, breaking it and reducing the insertion resistance of the main support 5, thereby improving the insertion efficiency of the grounding electrode. After insertion, a resistance-reducing agent is injected into the second hollow tube 15. The agent is then discharged through the injection hole, effectively encapsulating the artificial electrode 6 and the positioning and fixing components. This increases the contact area with the soil, facilitating lightning discharge and ultimately enhancing the reliability and protective effectiveness of the entire lightning protection grounding device, improving the safety of wind farm operations.

[0037] When in use, the protective structure isolates the external environment through the synergistic effect of the upper shield 8, the first sealing ring 11, and the second sealing ring 12. The spatial limitation of the lightning rod is achieved through the clamping cooperation between the connecting bracket 1 and the limiting protective cover. The vibration of the lightning rod is actively absorbed by the rebound force of the first sealing ring 11 and the second sealing ring 12 and the constraint damping effect of the clamping structure, thereby improving the reliability of the connection between the lightning rod 2 and the down conductor 3, and thus improving the reliability of the device.

[0038] All standard parts used in this invention can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional techniques such as bolt connection, which are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The materials and specifications of each component can be selected according to requirements and are not limited here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lightning protection grounding device for wind farms, comprising a lightning arrester, a down conductor (3), and a grounding electrode, characterized in that: The grounding body includes a lightning protection grounding grid (4), an artificial electrode (6) connected to the lightning protection grounding grid (4), and a support assembly. The lightning protection grounding grid (4) is connected to the lightning arrester through a down conductor (3). The support assembly includes a main support body (5). The artificial electrode (6) is detachably connected to the middle of the top of the main support body (5). A positioning and fixing component is provided on the top of the main support body (5). The artificial electrode (6) and the positioning and fixing component are detachably connected through a fixing plate (7). The positioning and fixing component includes a first hollow tube (14), a second hollow tube (15), and a third hollow tube (17). The second hollow tube (15) has injection holes evenly arranged on the side wall of the part inserted into the soil. The resistance-reducing agent injected into the second hollow tube (15) is discharged through the injection holes to wrap the artificial electrode (6) and the positioning and fixing component. The inner cavity of the third hollow tube (17) is movably connected to a lifting plate (23). The lifting plate (23) is connected to the third hollow tube (17) through a lifting assembly.

2. The lightning protection grounding device for wind farms according to claim 1, characterized in that: The lightning arrester includes a connecting bracket (1) and a lightning rod (2) connected to the top of the connecting bracket (1). The lightning rod (2) is connected to the end of the down conductor (3) away from the lightning protection grounding network (4). The connection part between the lightning rod (2) and the down conductor (3) is wrapped by a protective structure.

3. A lightning protection grounding device for wind farms according to claim 2, characterized in that: The protective structure includes an upper shield (8) fixedly connected to the lightning rod (2) and a limiting protective cover detachably connected to the top of the connecting bracket (1); the upper shield (8) is located above the limiting protective cover, the top of the limiting protective cover extends into the inner cavity of the upper shield (8), and the upper shield (8) and the limiting protective cover are sealed by a first sealing ring (11); the limiting protective cover wraps the connection between the lightning rod (2) and the down conductor (3), the lightning rod (2) is located in the middle of the inner cavity of the limiting protective cover, and the limiting protective cover and the lightning rod (2) are sealed by a second sealing ring (12).

4. A lightning protection grounding device for wind farms according to claim 3, characterized in that: The sealing surface of the first sealing ring (11) adopts a stepped structure design.

5. A lightning protection grounding device for wind farms according to claim 3, characterized in that: The limiting protective cover includes two covers (9), which are detachably connected. Fixing blocks (10) are provided on both sides of the bottom of the cover (9). A clamping cavity adapted to the connecting bracket (1) is formed between the two fixing blocks (10) in the cover (9). A second sealing ring (12) is connected to the top and bottom of the inner cavity of the cover (9).

6. A lightning protection grounding device for wind farms according to claim 1, characterized in that: The top ends of the first hollow tube (14), the second hollow tube (15) and the third hollow tube (17) are all detachably connected with sealing caps (18).

7. A lightning protection grounding device for wind farms according to claim 1, characterized in that: The lifting assembly includes a lower synchronous wheel movably connected to the bottom of the inner cavity of the third hollow tube (17), a support frame (24) connected to the top of the third hollow tube (17), an upper synchronous wheel (20) movably connected to the support frame (24), and a synchronous chain (22). The lower synchronous wheel and the upper synchronous wheel (20) are connected by a synchronous chain (22). The lifting plate (23) is connected to the side of the synchronous chain (22) near the artificial electrode (6). One end of the shaft of the upper synchronous wheel (20) is connected to a fixed plate (21).

8. A lightning protection grounding device for wind farms according to claim 1, characterized in that: The main support body (5) is a hollow structure. A hydraulic telescopic rod (19) is connected to the inner cavity of the main support body (5). A pick (13) is connected to the end of the output shaft of the hydraulic telescopic rod (19). The pick (13) is movably connected to the inner cavity of the main support body (5), and the bottom end of the pick (13) extends to the outside of the main support body (5).

9. A lightning protection grounding device for wind farms according to claim 1, characterized in that: The top of the positioning and fixing component is connected to a fixing frame (16), and the top of the positioning and fixing component is located above the ground.

10. A lightning protection grounding device for wind farms according to claim 1, characterized in that: Conductive paste is applied between the artificial electrode (6) and the fixing plate (7) and between the positioning and fixing component and the fixing plate (7).

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