A configuration device and method suitable for complex mountainous wind power grounding

Abstract

The application belongs to the technical field of wind power grounding configuration, and particularly relates to a configuration device and method suitable for complex mountainous wind power grounding, which comprises an inner ring grounding net, an outer ring grounding net and a vertical grounding electrode assembly; adjacent vertical grounding electrode assemblies of the inner ring grounding net and the outer ring grounding net are provided with conductive strips; the vertical grounding electrode assembly comprises a welding seat, an electrode column and a support cover; the lower side of the welding seat is fixedly connected with the electrode column; the outer side of the electrode column is provided with the support cover; the support cover and the electrode column are filled with a resistance reduction material. By arranging the inner ring grounding net, the outer ring grounding net and the array distributed vertical grounding electrode assembly, the tower cylinder current can be quickly introduced into the ground, the grounding resistance can be greatly reduced by using the resistance reduction material, the grounding device is less affected by geological movement, biological activity or humidity change after construction, can keep efficient and close contact with the electrode column for a long time, and the service life of the grounding device is prolonged.

Description

Technical Field

[0001] This invention belongs to the field of wind power grounding configuration technology, specifically a configuration device and method suitable for wind power grounding in complex mountainous areas. Background Technology

[0002] With the widespread application of renewable energy, wind power, as an important clean energy source, is increasingly being deployed in complex mountainous terrain. These mountainous areas present unique challenges to the installation and operation of wind turbine generators, particularly in the design and implementation of grounding systems. Due to the harsh geological conditions of mountainous regions, the surface soil is shallow, loose, and has low water content, while the inner layers consist mostly of fractured, relatively hard rock, resulting in high grounding resistance and making implementation difficult.

[0003] A Chinese patent application CN117013325A discloses a configuration method for grounding wind power in complex mountainous areas. The key technical points of the solution are: dividing the grounding resistivity of the project, selecting different materials for different grounding resistivities, forming a standardized material library and a standardized data collection list; formulating a standardized configuration calculation process, checking the thermal stability of the selected grounding body and grounding wire, determining the material and cross-sectional area of ​​the neutral conductor, and verifying the capacity of the protection equipment, so as to make the grounding configuration more accurate.

[0004] However, in the use of existing wind power grounding devices, due to the complex and variable geological characteristics and soil environment in mountainous areas, the soil conditions where the grounding electrodes are located may change after construction due to geological movement, biological activity, or humidity. As a result, gaps and cracks may easily appear between the electrodes and the soil, leading to uneven contact. This causes an abnormal increase in soil resistivity, and lightning strikes or fault currents cannot be effectively discharged. This can cause minor issues such as malfunctions in the wind turbine control system and unit shutdown, or even serious damage to precision equipment such as converters. Secondly, the uneven soil structure can easily form a potential gradient, which may generate dangerous step voltages and threaten the safety of inspection personnel. In addition, high-impedance grounding will exacerbate the potential difference between the tower and the line, accelerate the electrochemical corrosion of metal components, and shorten the equipment life.

[0005] Therefore, the present invention provides a configuration device and method for grounding wind power in complex mountainous areas. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: a configuration device for grounding wind power in complex mountainous areas, comprising an inner grounding grid, an outer grounding grid and a vertical grounding electrode assembly;

[0008] The inner and outer grounding grids are both concentrically arranged around the wind turbine tower; the vertical grounding electrode assemblies are evenly distributed on the surfaces of the inner and outer grounding grids; and conductive strips are provided between adjacent vertical grounding electrode assemblies of the inner and outer grounding grids.

[0009] The vertical grounding electrode assembly is used to introduce the current from the wind turbine tower into the ground; the vertical grounding electrode assembly includes a welding base, an electrode post, and a support cover;

[0010] The welding seat is used for welding with the inner ring grounding grid, the outer ring grounding grid and the conductive strip; an electrode post is fixedly connected to the lower side of the welding seat; a support cover is provided on the outside of the electrode post, and the support cover has a mesh design; a resistance-reducing material is filled between the support cover and the electrode post.

[0011] Preferably, a set of annular pipes are evenly distributed inside the support cover; adjacent annular pipes are interconnected by a set of connecting pipes; a set of water outlets are evenly distributed inside the annular pipes; a set of water storage tanks are evenly distributed outside the outer ring grounding grid; a water inlet pipe connects the water storage tanks to one of the annular pipes at the top; and a conductive and anti-corrosion coating is applied to the surface of the electrode post.

[0012] Preferably, a solenoid valve is installed on the water inlet pipe; a humidity sensor is installed on the surface of the electrode post; and the humidity sensor is connected to the solenoid valve through a PLC control system.

[0013] Preferably, the outlet is provided with a fixing plate and a sealing block, and the fixing plate is a mesh design; a connecting block is fixedly connected to the surface of the sealing block; a driving component is fixedly connected between the connecting block and the fixing plate; the driving component is made of a water-absorbing and expanding material.

[0014] Preferably, a pair of slide rails are provided on the inner wall surface of the outlet; a locking block is slidably connected inside the slide rails and the locking block is attached to the surface of the connecting block; a spring is fixedly connected between the locking block and the slide rails; a pair of slots are provided on the surface of the connecting block.

[0015] Preferably, an installation plate is fixedly connected to the top of the water storage tank; a water collection trough is provided in the middle of the installation plate; and a filter screen is fixedly connected inside the water collection trough.

[0016] Preferably, a pair of collecting rollers are rotatably connected to the inside of both sides of the mounting plate; a coil spring is provided between the collecting rollers and the mounting plate; a waterproof cloth is wound between the pair of collecting rollers and the waterproof cloth is attached to the lower side of the water collection tank.

[0017] Preferably, the mounting plate is fixedly connected to a guide block at the corresponding position of the receiving roller; the guide block has a guide groove inside, and the waterproof cloth passes through the inside of the guide groove; a set of elastic toothed blocks are evenly distributed at the bottom of the guide groove; a set of elastic toothed blocks are evenly distributed on the lower side of the waterproof cloth at the corresponding position of the guide block.

[0018] A grounding configuration method suitable for wind power in complex mountainous terrain, the method employing the aforementioned grounding configuration device for wind power in complex mountainous terrain, includes the following steps:

[0019] S1. Excavate the topsoil around the wind turbine and dig and build a water storage tank 10m away from the turbine. The water storage tank should be treated to prevent water seepage.

[0020] S2. Drill multiple mounting holes using drilling equipment, and place the support cover and electrode column into the mounting holes in sequence. Lay a water inlet pipe between the water storage tank and the annular pipe of the support cover.

[0021] S3. Mix the drag-reducing material with water and pour it into the annular gap between the support cover and the electrode column. During this process, pour the material in layers and compact it with vibration.

[0022] S4. After the structure of the resistance-reducing material is stable, the welding base is welded to the inner ring grounding grid, the outer ring grounding grid, and the conductive strip by exothermic welding, and the surface soil is backfilled.

[0023] S5. The humidity sensor monitors the area around the electrode post in real time. If the moisture content drops to the trigger threshold, the PLC control system opens the solenoid valve, and the rainwater in the water storage tank enters the ring pipe through the water inlet pipe.

[0024] S6. The driving component in the water outlet absorbs water and expands when it comes into contact with water, pushing the connecting block and sealing block to move outward, thereby realizing the automatic opening of the water outlet.

[0025] S7. The water in the annular pipe enters the interior of the drag-reducing material through the outlet and diffuses to the surrounding area, replenishing the drag-reducing material with water, maintaining a moist state, and ensuring good electrical conductivity.

[0026] The beneficial effects of this invention are as follows:

[0027] 1. The present invention provides a configuration device and method for grounding wind power in complex mountainous terrain. By setting an inner grounding grid, an outer grounding grid, and an array of vertically distributed grounding electrode components, the tower current can be quickly conducted into the ground. Conductive strips are installed between adjacent vertical grounding electrode components to balance voltage and improve grounding uniformity. A support cover is provided to support the borehole walls during construction and prevent collapse. After the electrode column is installed, a resistance-reducing material is filled into the annular gap between the electrode column and the support cover. This material can pass through the mesh of the support cover and make smooth contact with the surrounding soil. Not only can grounding resistance be significantly reduced, but it is also less affected by geological movements, biological activities, or humidity changes after construction. The probability of gaps or cracks appearing between the grounding resistance material and the electrode post is small. It can maintain an efficient and close contact with the electrode post for a long time, extending the service life of the grounding device. In addition, the grounding resistance material can also play a role in water retention and slow release. It absorbs moisture from the surrounding soil through capillary action, uses the moisture to increase the effective current dissipation cross section between the grounding resistance material and the electrode post, dissolves salts in the soil, forms an electrolyte solution, and increases the ionic conductivity inside the grounding resistance material.

[0028] 2. The configuration device and method for grounding wind power in complex mountainous areas as described in this invention monitors the area around the electrode post in real time using a humidity sensor. If the moisture content in the area drops to a certain threshold, the PLC control system opens the solenoid valve for a period of time. At this time, water in the reservoir can enter the annular pipe inside the support cover through the water inlet pipe, and flow down the connecting pipe to multiple annular pipes. Finally, the water flows evenly through the outlet on the inner side of the annular pipe to the resistance-reducing material between the support cover and the electrode post, thereby replenishing the resistance-reducing material with moisture, keeping the material moist, and further continuously improving the conductivity efficiency of the grounding device. Attached Figure Description

[0029] The invention will now be further described with reference to the accompanying drawings.

[0030] Figure 1 This is a top view of the present invention;

[0031] Figure 2 This is a cross-sectional view of the vertical grounding electrode assembly and the water storage tank in this invention;

[0032] Figure 3 yes Figure 2 Enlarged view of a portion of point A in the middle;

[0033] Figure 4 yes Figure 2 Enlarged view of a section at point B in the middle;

[0034] Figure 5 yes Figure 4 Enlarged view of a section at point C;

[0035] Figure 6 This is a schematic diagram of the vertical grounding electrode assembly in this invention;

[0036] Figure 7 This is a schematic diagram of the electrode post structure in this invention;

[0037] Figure 8 This is a schematic diagram of the sealing block in this invention;

[0038] Figure 9 This is a schematic diagram of the method flow of the present invention.

[0039] In the diagram: Inner ring grounding grid 1, outer ring grounding grid 2, conductive strip 3, welding seat 4, electrode post 5, support cover 6, ring pipe 7, connecting pipe 8, water outlet 9, water storage tank 10, water inlet pipe 11, solenoid valve 12, humidity sensor 13, fixing plate 14, sealing block 15, connecting block 16, driving component 17, slide rail 18, locking block 19, locking groove 20, mounting plate 21, water collection tank 22, filter screen 23, collection roller 24, waterproof cloth 25, guide block 26, guide groove 27, elastic tooth block one 28, elastic tooth block two 29. Detailed Implementation

[0040] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0041] like Figures 1 to 8 As shown, the configuration device for grounding wind power in complex mountainous areas according to the present invention includes an inner grounding grid 1, an outer grounding grid 2, and a vertical grounding electrode assembly;

[0042] The inner grounding grid 1 and the outer grounding grid 2 are both concentrically arranged around the wind turbine tower; the vertical grounding electrode components are evenly distributed on the surfaces of the inner grounding grid 1 and the outer grounding grid 2; and conductive strips 3 are provided between adjacent vertical grounding electrode components of the inner grounding grid 1 and the outer grounding grid 2.

[0043] The vertical grounding electrode assembly is used to introduce the current from the wind turbine tower into the ground; the vertical grounding electrode assembly includes a welding base 4, an electrode post 5, and a support cover 6;

[0044] The welding seat 4 is used for welding with the inner grounding grid 1, the outer grounding grid 2 and the conductive strip 3; an electrode post 5 is fixedly connected to the lower side of the welding seat 4; a support cover 6 is provided on the outside of the electrode post 5, and the support cover 6 is a mesh design; a resistance-reducing material is filled between the support cover 6 and the electrode post 5.

[0045] In existing wind power grounding devices, due to the complex and variable geological characteristics and soil environment in mountainous areas, the soil conditions where the grounding electrodes are located may change after construction due to geological movement, biological activity, or humidity. This can lead to gaps and cracks between the electrodes and the soil, resulting in uneven contact and abnormally high soil resistivity. This prevents the effective discharge of lightning strikes or fault currents, which can cause minor issues such as malfunctions in the wind turbine control system and unit shutdowns, or even damage to precision equipment such as converters. Secondly, the uneven soil structure can easily create potential gradients, potentially generating dangerous step voltages that threaten the safety of inspection personnel. In addition, high-impedance grounding can exacerbate the potential difference between the tower and the line, accelerate the electrochemical corrosion of metal components, and shorten the equipment lifespan.

[0046] This invention, by setting up an inner grounding grid 1, an outer grounding grid 2, and an array of vertical grounding electrode components, can quickly guide the tower current into the ground. Conductive strips 3 are installed between adjacent vertical grounding electrode components to balance voltage and improve grounding uniformity. A support cover 6 is provided to support the hole wall during construction and prevent collapse. After the electrode post 5 is installed, a resistance-reducing material is filled into the annular gap between the electrode post 5 and the support cover 6. The resistance-reducing material can pass through the mesh of the support cover 6 and smoothly contact the surrounding soil. Using this resistance-reducing material not only significantly reduces grounding resistance but also minimizes its impact from geological movements, biological activities, or humidity changes after construction. The probability of gaps or cracks appearing between the resistance-reducing material and the electrode post 5 is low, allowing it to maintain a highly efficient and close contact with the electrode post 5 for a long time, extending the service life of the grounding device. Furthermore, the resistance-reducing material also plays a role in water retention and slow release, absorbing moisture from the surrounding soil through capillary action. This moisture increases the effective current dissipation cross-section between the resistance-reducing material and the electrode post 5, dissolving salts in the soil to form an electrolyte solution and increasing the ionic conductivity within the resistance-reducing material.

[0047] It is worth noting that during drilling, the drilling depth should be increased as much as possible. The electrode post 5 should be a deep and long vertical grounding electrode that penetrates the surface soil and the middle layer of rock to improve the fixing effect of the support cover 6 and the electrode post 5 as well as the grounding effect.

[0048] The aforementioned drag-reducing materials can be single types or combinations of bentonite, conductive mica powder, flake graphite, zeolite particles, etc. For complex mountainous areas, the drag-reducing material formula recommended by this invention is: 50% sodium bentonite, 2% graphene oxide, 15% acrylic acid-acrylamide copolymer, 5% rare earth molybdate, and 28% foamed ceramsite.

[0049] In another embodiment of the present invention, a set of annular pipes 7 are evenly distributed on the inner side of the support cover 6; adjacent annular pipes 7 are interconnected by a set of connecting pipes 8; a set of water outlets 9 are evenly distributed on the inner side of the annular pipes 7; a set of water storage tanks 10 are evenly distributed on the outer side of the outer ring grounding grid 2; a water inlet pipe 11 is connected between the water storage tank 10 and one of the annular pipes 7 at the top; and the surface of the electrode post 5 is coated with a conductive and anti-corrosion coating.

[0050] During rain, rainwater can penetrate the soil and enter the interior of the resistance-reducing material. At the same time, the rainwater collects inside the water storage tank 10. After the rain stops, the water in the water storage tank 10 can enter the annular pipe 7 inside the support cover 6 through the water inlet pipe 11, and flow down along the connecting pipe 8 to multiple annular pipes 7. Finally, it flows evenly through the outlet 9 on the inner side of the annular pipe 7 to the interior of the resistance-reducing material between the support cover 6 and the electrode post 5, thereby replenishing the resistance-reducing material with water, keeping the material moist, and further continuously improving the conductivity efficiency of the grounding device.

[0051] A solenoid valve 12 is installed on the water inlet pipe 11; a humidity sensor 13 is installed on the surface of the electrode post 5; the humidity sensor 13 is connected to the solenoid valve 12 through a PLC control system.

[0052] The humidity sensor 13 monitors the area around the electrode post 5 in real time. If the moisture content in the area drops to a certain threshold, the PLC control system will open the solenoid valve 12 for a period of time. At this time, the rainwater in the water storage tank 10 can enter the interior of the drag-reducing material through the water pipe 11 to realize the function of intelligent water replenishment. This ensures that the moisture content inside the drag-reducing material is not too high and saves the water consumption of the water storage tank 10, so as to achieve planned and long-term continuous water replenishment.

[0053] In another embodiment of the present invention, a fixing plate 14 and a sealing block 15 are provided inside the water outlet 9, and the fixing plate 14 is a mesh design; a connecting block 16 is fixedly connected to the surface of the sealing block 15; a driving component 17 is fixedly connected between the connecting block 16 and the fixing plate 14; the driving component 17 is made of a water-absorbing and expanding material, which can be water-absorbing resin, polymer hydrogel, shape memory polymer, etc.

[0054] Under normal circumstances, the sealing block 15 can seal the inside of the outlet 9, so that the drag-reducing material and water will not enter the annular pipe 7 through the outlet 9 during construction, thus preventing the outlet 9 or the annular pipe 7 from being blocked. After construction, the drag-reducing material gradually forms a stable structure. When water in the reservoir 10 enters the annular pipe 7, the water comes into contact with the driving component 17, causing the driving component 17 to quickly absorb water and expand, and push the connecting block 16 and the sealing block 15 to slide outward, realizing the automatic opening of the outlet 9. The water flow inside the annular pipe 7 can smoothly pass through the outlet 9 and be discharged into the drag-reducing material. In addition, the sealing block 15 can press and pull the nearby drag-reducing material during the outward movement, improving the porosity and density of the nearby drag-reducing material, ensuring that the subsequent water flow can smoothly pass through this point and diffuse into the surrounding drag-reducing material.

[0055] A pair of slide rails 18 are provided on the inner wall surface of the outlet 9; a locking block 19 is slidably connected inside the slide rail 18 and the locking block 19 is attached to the surface of the connecting block 16; a spring is fixedly connected between the locking block 19 and the slide rail 18; a pair of slots 20 are provided on the surface of the connecting block 16.

[0056] By setting the locking block 19, on the one hand, the connecting block 16 and the sealing block 15 are limited, causing them to move outward in a predetermined direction. On the other hand, as the sealing block 15 extends outward, the end of the locking block 19 slides on the surface of the connecting block 16. Finally, under the pushing action of the spring, the locking block 19 enters the slot 20, thereby locking and fixing the connecting block 16 and the sealing block 15. This keeps the outlet 9 open at all times, preventing the subsequent phenomenon that the driving component 17 will gradually shrink and recover after drying, pulling the sealing block 15 back into the outlet 9 and causing the outlet 9 to close again. Even if the driving component 17 shrinks after drying, it may absorb water and expand again. However, after long-term and repeated cycles of deformation, it is difficult to achieve the original ideal effect. Therefore, locking the connecting block 16 and the sealing block 15 can avoid the above problems.

[0057] In another embodiment of the present invention, an installation plate 21 is fixedly connected to the top of the water storage tank 10; a water collection trough 22 is provided in the middle of the installation plate 21; and a filter screen 23 is fixedly connected inside the water collection trough 22. The filter screen 23 intercepts debris in the rainwater to prevent it from entering the water storage tank 10 and causing blockage.

[0058] In another embodiment of the present invention, a pair of collecting rollers 24 are rotatably connected to the inside of both sides of the mounting plate 21; a coil spring is provided between the collecting rollers 24 and the mounting plate 21; a waterproof cloth 25 is wound between the pair of collecting rollers 24 and the waterproof cloth 25 is attached to the lower side of the water collection tank 22.

[0059] During the water collection process, rainwater first enters the water collection trough 22 through the filter screen 23 and accumulates on the surface of the waterproof cloth 25. As the rainwater gradually accumulates, the gravity increases, causing the waterproof cloth 25 to sag and bend downwards, pulling the collecting roller 24 to rotate and roll up the waterproof cloth 25. At this time, a gap appears between the waterproof cloth 25 and the water collection trough 22, allowing water above the waterproof cloth 25 to smoothly enter the water storage tank 10 through the gap, thus collecting the rainwater. When the rain stops, no more rainwater enters the water collection trough 22 and applies gravity to the waterproof cloth 25. The coil spring drives the collecting roller 24 to reverse and re-roll up the waterproof cloth 25, causing the waterproof cloth 25 to re-adhere to the lower side of the water collection trough 22, thereby sealing the water collection trough 22 and preventing external airflow, sun exposure, and high temperature environment from causing a large amount of water in the water collection trough 22 to evaporate and dissipate, increasing the rainwater retention time and extending the water replenishment period as much as possible.

[0060] The mounting plate 21 is fixedly connected to the guide block 26 at the corresponding position of the receiving roller 24; the guide block 26 has a guide groove 27 inside, and the waterproof cloth 25 passes through the inside of the guide groove 27; a set of elastic toothed blocks 28 are evenly distributed at the bottom of the guide groove 27; a set of elastic toothed blocks 29 are evenly distributed on the lower side of the waterproof cloth 25 at the corresponding position of the guide block 26.

[0061] During the process of the waterproof cloth 25 being rolled up or unrolled from the surface of the collecting roller 24, the waterproof cloth 25 will move through the guide groove 27. As a result, the elastic tooth block 1 28 and the elastic tooth block 29 squeeze and rub against each other, causing the movement of the waterproof cloth 25 to have a jerky and shaking effect. This shakes and separates the fine soil impurities remaining on the upper surface of the waterproof cloth 25, causing them to fall off with the rainwater. On the one hand, after the waterproof cloth 25 is attached to the water collection tank 22, it can avoid the presence of impurities between the waterproof cloth 25 and the mounting plate 21, which would affect the sealing performance and further reduce the leakage of water vapor. On the other hand, it can alleviate the problem of stress concentration, shrinkage deformation, and physical wear caused by the drying process of cement and soil impurities on the surface of the waterproof cloth 25, which could lead to cracking of the waterproof cloth 25 and extend the service life of the waterproof cloth 25.

[0062] like Figure 9 As shown, the present invention provides a configuration method for grounding wind power in complex mountainous terrain. This method employs the aforementioned configuration device for grounding wind power in complex mountainous terrain and includes the following steps:

[0063] S1. Excavate the topsoil around the wind turbine and dig and construct a water storage tank 10 at a location 10m away from the turbine. The water storage tank 10 shall be treated to prevent water seepage.

[0064] S2. Drill multiple installation holes using drilling equipment, and place the support cover 6 and electrode column 5 into the installation holes in sequence. Lay a water inlet pipe 11 between the water storage tank 10 and the annular pipe 7 of the support cover 6.

[0065] S3. Mix the resistance-reducing material with water and pour it into the annular gap between the support cover 6 and the electrode post 5. During this process, pour the material in layers and compact it with vibration.

[0066] S4. After the structure of the resistance-reducing material is stable, the welding seat 4 is welded to the inner ring grounding grid 1, the outer ring grounding grid 2, and the conductive strip 3 by exothermic welding, and the surface soil is backfilled.

[0067] S5. The humidity sensor 13 monitors the area around the electrode post 5 in real time. If the moisture content drops to the trigger threshold, the PLC control system opens the solenoid valve 12, and the rainwater in the water storage tank 10 enters the annular pipe 7 through the water inlet pipe 11.

[0068] S6. The driving component 17 in the outlet 9 absorbs water and expands when it comes into contact with water, pushing the connecting block 16 and the sealing block 15 to move outward, so that the outlet 9 can be opened automatically.

[0069] S7. The water in the annular pipe 7 enters the interior of the drag-reducing material through the outlet 9 and diffuses to the surrounding area, replenishing the drag-reducing material with water, maintaining a moist state, and ensuring good electrical conductivity.

[0070] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0071] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0072] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A grounding configuration device suitable for wind power in complex mountainous terrain, characterized in that: It includes an inner grounding grid (1), an outer grounding grid (2), and a vertical grounding electrode assembly; The inner grounding grid (1) and the outer grounding grid (2) are both concentrically arranged around the wind turbine tower; a set of vertical grounding electrode components are provided and evenly distributed on the surfaces of the inner grounding grid (1) and the outer grounding grid (2); a conductive strip (3) is provided between adjacent vertical grounding electrode components of the inner grounding grid (1) and the outer grounding grid (2). The vertical grounding electrode assembly is used to introduce the current of the wind turbine tower into the ground; the vertical grounding electrode assembly includes a welding base (4), an electrode post (5), and a support cover (6). The welding seat (4) is used to weld with the inner grounding grid (1), the outer grounding grid (2) and the conductive strip (3); an electrode post (5) is fixedly connected to the lower side of the welding seat (4); a support cover (6) is provided on the outside of the electrode post (5), and the support cover (6) is a mesh design; a resistance-reducing material is filled between the support cover (6) and the electrode post (5). A set of annular pipes (7) are evenly distributed on the inner side of the support cover (6); adjacent annular pipes (7) are connected to each other by a set of connecting pipes (8); a set of water outlets (9) are evenly distributed on the inner side of the annular pipes (7); a set of water storage tanks (10) are evenly distributed on the outer side of the outer ring grounding grid (2); a water inlet pipe (11) is connected between the water storage tank (10) and one of the annular pipes (7) at the top; the surface of the electrode column (5) is coated with a conductive and anti-corrosion coating. A solenoid valve (12) is installed on the water inlet pipe (11); a humidity sensor (13) is installed on the surface of the electrode post (5); the humidity sensor (13) is connected to the solenoid valve (12) through a PLC control system; The outlet (9) is provided with a fixing plate (14) and a sealing block (15), and the fixing plate (14) is a mesh design; a connecting block (16) is fixedly connected to the surface of the sealing block (15); a driving component (17) is fixedly connected between the connecting block (16) and the fixing plate (14); the driving component (17) is made of water-absorbing and expanding material; An installation plate (21) is fixedly connected to the top of the water storage tank (10); a water collection trough (22) is provided in the middle of the installation plate (21); a filter screen (23) is fixedly connected inside the water collection trough (22); A pair of collecting rollers (24) are rotatably connected to the inside of both sides of the mounting plate (21); a coil spring is provided between the collecting rollers (24) and the mounting plate (21); a waterproof cloth (25) is wound between the pair of collecting rollers (24), and the waterproof cloth (25) is attached to the lower side of the water collection tank (22).

2. The grounding configuration device for wind power in complex mountainous areas according to claim 1, characterized in that: The inner wall surface of the outlet (9) is provided with a pair of slide rails (18); a locking block (19) is slidably connected inside the slide rail (18), and the locking block (19) is attached to the surface of the connecting block (16); a spring is fixedly connected between the locking block (19) and the slide rail (18); a pair of slots (20) are opened on the surface of the connecting block (16).

3. The grounding configuration device for wind power in complex mountainous areas according to claim 1, characterized in that: The mounting plate (21) is fixedly connected to a guide block (26) at the corresponding position of the receiving roller (24); the guide block (26) has a guide groove (27) inside, and the waterproof cloth (25) passes through the inside of the guide groove (27); a set of elastic toothed blocks (28) are evenly distributed at the bottom of the guide groove (27); a set of elastic toothed blocks (29) are evenly distributed on the lower side of the waterproof cloth (25) at the corresponding position of the guide block (26).

4. A configuration method for grounding wind power in complex mountainous terrain, the method employing the configuration device for grounding wind power in complex mountainous terrain as described in claim 3, characterized in that: Includes the following steps: S1. Excavate the topsoil around the wind turbine and dig and build a water storage tank (10) 10m away from the turbine. The water storage tank (10) is treated to prevent water seepage. S2. Drill multiple installation holes using drilling equipment, and place the support cover (6) and electrode column (5) into the installation holes in sequence. Then, lay a water inlet pipe (11) between the water storage tank (10) and the annular pipe (7) of the support cover (6). S3. Mix the resistance-reducing material with water and pour it into the annular gap between the support cover (6) and the electrode column (5). During this process, pour the material in layers and compact it with vibration. S4. After the structure of the resistance-reducing material is stable, the welding seat (4) is welded to the inner ring grounding grid (1), the outer ring grounding grid (2), and the conductive strip (3) by exothermic welding, and the surface soil is backfilled.

5. The grounding configuration method for wind power in complex mountainous terrain according to claim 4, characterized in that: It also includes the following steps: S5. The humidity sensor (13) monitors the area around the electrode post (5) in real time. If the moisture content drops to the trigger threshold, the PLC control system opens the solenoid valve (12), and the rainwater in the water storage tank (10) enters the ring pipe (7) through the water pipe (11). S6. The driving component (17) in the outlet (9) absorbs water and expands after encountering water, pushing the connecting block (16) and the sealing block (15) to move outward, so as to realize the automatic opening of the outlet (9); S7. The water in the annular pipe (7) enters the interior of the drag-reducing material through the outlet (9) and spreads to the surrounding area, replenishing the drag-reducing material with water, maintaining a moist state, and ensuring good conductivity.

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