Configuration device and method suitable for complex mountain wind power grounding

Abstract

The invention belongs to the technical field of wind power grounding configuration, and particularly relates to a configuration device and method suitable for wind power grounding in complex mountainous regions, and the device comprises an inner ring grounding grid, an outer ring grounding grid, and a vertical grounding electrode assembly. A conductive strip is arranged between the adjacent vertical grounding electrode assemblies of the inner ring grounding grid and the outer ring grounding grid. The vertical grounding electrode assembly comprises a welding seat, an electrode column and a supporting cover. The lower side of the welding seat is fixedly connected with an electrode column; a supporting cover is arranged on the outer side of the electrode column; and a resistance reducing material is filled between the supporting cover and the electrode column. Through the arrangement of the inner-ring grounding grid, the outer-ring grounding grid and the vertical grounding electrode assemblies distributed in an array mode, the current of a tower drum can be rapidly guided into the ground, the grounding resistance can be greatly reduced through the resistance reducing material, the influence of geological movement, biological activity or humidity change after construction is small, the high-efficiency attaching contact state with an electrode column can be kept for a long time, and the construction efficiency is improved. And the service life of the grounding device is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of wind power grounding configuration, and in particular relates to a configuration device and method suitable for wind power grounding in complex mountainous areas. Background Art

[0002] With the widespread adoption of renewable energy, wind power generation, as a key clean energy source, is gradually expanding into complex mountainous terrain. The complex geographical and climatic conditions in these mountainous regions present unique challenges for the installation and operation of wind turbines, particularly in the design and implementation of grounding systems. Due to the harsh geological conditions in mountainous areas, the surface soil is thin, loose, and low in moisture, while the inner layer is mostly composed of hard, fractured rock. This results in high grounding resistance, making implementation difficult.

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

[0004] However, when the wind power grounding device in the existing technology is in use, due to the complex and changeable geological characteristics and soil environment in mountainous areas, the soil conditions where the grounding electrode is located after construction may change due to geological movements, biological activities or humidity. As a result, gaps and cracks are likely to appear between the electrode and the rock and soil, resulting in uneven contact, which leads to an abnormal increase in soil resistivity. Lightning strikes or fault currents cannot be effectively discharged, which may cause malfunction of the wind turbine control system and unit shutdown at the least, and damage precision equipment such as the converter at worst. Secondly, the uneven soil structure is prone to form a potential gradient, which may produce dangerous step voltages and threaten the safety of inspection personnel. In addition, high-impedance grounding will aggravate the potential difference between the tower and the line, accelerate the electrochemical corrosion of metal components, and shorten the life of equipment.

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

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

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

[0008] The inner ring grounding grid and the outer ring grounding grid are both concentrically arranged around the wind turbine tower; the vertical grounding electrode assemblies are both arranged on the surface of the inner ring grounding grid and the outer ring grounding grid; conductive strips are arranged between adjacent vertical grounding electrode assemblies of the inner ring grounding grid and the outer ring grounding grid;

[0009] The vertical grounding electrode assembly is used to introduce the current of the wind power tower into the ground; the vertical grounding electrode assembly includes a welding seat, an electrode column 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; the electrode column is fixedly connected to the lower side of the welding seat; a support cover is provided on the outside of the electrode column, and the support cover is a mesh design; the space between the support cover and the electrode column is filled with resistance reducing material.

[0011] Preferably, a group of annular tubes are evenly distributed on the inner side of the support cover; adjacent annular tubes are connected to each other through a group of connecting tubes; a group of water outlets are evenly distributed on the inner side of the annular tubes; a group of water reservoirs are evenly distributed on the outer side of the outer ring grounding grid; a water diversion pipe is connected between the water reservoir and a circular tube at the top; the surface of the electrode column is coated with a conductive anti-corrosion coating.

[0012] Preferably, a solenoid valve is provided on the water diversion pipe; a humidity sensor is provided on the surface of the electrode column; and the humidity sensor is connected to the solenoid valve via a PLC control system.

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

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

[0015] Preferably, a mounting plate is fixedly connected to the top of the water reservoir; a water collecting trough is provided in the middle of the mounting plate; and a filter is fixedly connected to the inside of the water collecting trough.

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

[0017] Preferably, the mounting plate is fixedly connected to a guide block at a position corresponding to the storage roller; a guide groove is provided inside the guide block, and the waterproof cloth passes through the guide groove; a group of elastic tooth blocks 1 are evenly distributed at the bottom of the guide groove; a group of elastic tooth blocks 2 are evenly distributed on the lower side of the waterproof cloth at a position corresponding to the guide block.

[0018] A configuration method for wind power grounding in complex mountainous areas, the method using the above-mentioned configuration device for wind power grounding in complex mountainous areas, comprises the following steps:

[0019] S1. Dig up the surface soil around the wind turbine and build a water reservoir 10m away from the turbine. The water reservoir shall be treated to prevent water seepage.

[0020] S2. Drill multiple mounting holes using drilling equipment, place the support cover and electrode column into the mounting holes in sequence, and lay a water diversion pipe between the water reservoir and the annular pipe of the support cover;

[0021] S3. Mix the resistance-reducing material with water and pour it into the annular gap between the support cover and the electrode column. During the process, pour it in layers and vibrate it to make it dense.

[0022] S4. After the resistance reduction material structure 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 column 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 reservoir enters the annular pipe through the water diversion pipe.

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

[0025] S7. The water in the annular tube enters the resistance reduction material through the water outlet and diffuses to the surrounding area, replenishing moisture for the resistance reduction material, maintaining a moist state, and ensuring good conductive properties.

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

[0027] 1. The present invention discloses a configuration device and method for wind power grounding in complex mountainous areas. By setting an inner ring grounding grid, an outer ring grounding grid and an array of vertical grounding electrode assemblies, the tower current can be quickly introduced into the earth. Conductive strips are provided between adjacent vertical grounding electrode assemblies to balance the voltage and improve the grounding uniformity. A support cover is provided to support the hole wall during the construction phase to prevent collapse. After the electrode column is installed, the annular gap between the electrode column and the support cover is filled with a resistance-reducing material. The resistance-reducing material can pass through the mesh of the support cover and smoothly contact the surrounding soil. The resistance-reducing material can not only significantly reduce the grounding resistance, but also is less affected by geological movements, biological activities or humidity changes after construction. The probability of gaps and cracks appearing between the resistance-reducing material and the electrode column is small, and it can maintain an efficient and fitting contact state with the electrode column for a long time, thereby extending the service life of the grounding device. In addition, the resistance-reducing material can also play a role in water retention and slow release, absorbing moisture from the surrounding soil through capillary action, using moisture to increase the effective diffusion cross-section between the resistance-reducing material and the electrode column, dissolving the salt in the soil, forming an electrolyte solution, and increasing the ionic conductivity inside the resistance-reducing material.

[0028] 2. The present invention describes a configuration device and method suitable for complex mountain wind power grounding. A humidity sensor is used to monitor the area around the electrode column in real time. If the moisture content in the area drops to a certain threshold, the solenoid valve is opened for a period of time through the PLC control system. At this time, the water in the water reservoir can enter the annular pipe inside the support cover through the water diversion pipe, and flow down to multiple annular pipes along the connecting pipe, and finally flow evenly in a multi-point manner through the water outlet on the inside of the annular pipe to the inside of the resistance reduction material between the support cover and the electrode column, thereby replenishing moisture for the resistance reduction material, keeping the material moist, and further continuously improving the conductive efficiency of the grounding device. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0031] Figure 2 is a cross-sectional view of the vertical grounding electrode assembly and the water reservoir of the present invention;

[0032] Figure 3 yes Figure 2 A partial enlarged view of the middle A;

[0033] Figure 4 yes Figure 2 A partial enlarged view of point B in the middle;

[0034] Figure 5 yes Figure 4 A partial enlarged view of point C in the middle;

[0035] Figure 6 It is a structural schematic diagram of the vertical grounding electrode assembly in the present invention;

[0036] Figure 7 It is a structural schematic diagram of the electrode column in the present invention;

[0037] Figure 8 It is a structural schematic diagram of the sealing block in the present invention;

[0038] Figure 9 It is a schematic flow chart of the method of the present invention.

[0039] In the figure: inner ring grounding grid 1, outer ring grounding grid 2, conductive strip 3, welding seat 4, electrode column 5, support cover 6, annular pipe 7, connecting pipe 8, water outlet 9, water reservoir 10, water diversion pipe 11, solenoid valve 12, humidity sensor 13, fixing plate 14, sealing block 15, connecting block 16, driving member 17, slide rail 18, clamping block 19, clamping slot 20, mounting plate 21, water collecting trough 22, filter screen 23, storage roller 24, waterproof cloth 25, guide block 26, guide slot 27, elastic tooth block 1 28, elastic tooth block 2 29. DETAILED DESCRIPTION

[0040] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0041] like Figures 1 to 8 As shown, the present invention is a configuration device suitable for complex mountain wind power grounding, comprising an inner ring grounding grid 1, an outer ring grounding grid 2 and a vertical grounding electrode assembly;

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

[0043] The vertical grounding electrode assembly is used to introduce the current of the wind power tower into the ground; the vertical grounding electrode assembly includes a welding seat 4, an electrode column 5 and a support cover 6;

[0044] The welding seat 4 is used for welding with the inner ring grounding grid 1, the outer ring grounding grid 2 and the conductive strip 3; the electrode column 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 column 5, and the support cover 6 is a mesh design; the space between the support cover 6 and the electrode column 5 is filled with resistance reducing material.

[0045] When the wind power grounding device in the existing technology is in use, due to the complex and changeable geological characteristics and soil environment of mountainous areas, the soil conditions where the grounding electrode is located after construction may change due to geological movements, biological activities or humidity. As a result, gaps and cracks are likely to appear between the electrode and the rock and soil, resulting in uneven contact, causing an abnormal increase in soil resistivity. Lightning strikes or fault currents cannot be effectively discharged, which may cause malfunction of the wind turbine control system and unit shutdown at the least, and damage precision equipment such as the converter at worst. Secondly, the uneven soil structure is prone to form a potential gradient, which may produce dangerous step voltages and threaten the safety of inspection personnel. In addition, high-impedance grounding will aggravate the potential difference between the tower and the line, accelerate the electrochemical corrosion of metal components, and shorten the life of equipment.

[0046] The present invention provides an inner ring grounding grid 1, an outer ring grounding grid 2, and an array of vertical grounding electrode assemblies to quickly conduct tower current into the earth. Conductive strips 3 are provided between adjacent vertical grounding electrode assemblies to balance voltage and improve grounding uniformity. A support cover 6 is provided to support the hole wall during construction to prevent collapse. After the electrode column 5 is installed, a resistance-reducing material is filled into the annular gap between the electrode column 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. The use of the resistance-reducing material not only significantly reduces the grounding resistance, but also is less affected by geological movement, biological activity, or humidity changes after construction. The probability of gaps and cracks between the resistance-reducing material and the electrode column 5 is small, and it can maintain an efficient, close contact state with the electrode column 5 for a long time, extending the service life of the grounding device. In addition, the resistance-reducing material can also retain water and release it slowly. It absorbs moisture from the surrounding soil through capillary action, uses the moisture to increase the effective diffusion cross-section between the resistance-reducing material and the electrode column 5, dissolves salt in the soil, forms an electrolyte solution, and increases the ionic conductivity within the resistance-reducing material.

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

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

[0049] As another embodiment of the present invention, a group of annular tubes 7 are evenly distributed on the inner side of the support cover 6; adjacent annular tubes 7 are connected to each other through a group of connecting tubes 8; a group of water outlets 9 are evenly distributed on the inner side of the annular tubes 7; a group of water reservoirs 10 are evenly distributed on the outer side of the outer ring grounding grid 2; a water diversion pipe 11 is connected between the water reservoir 10 and a circular tube 7 at the top; the surface of the electrode column 5 is coated with a conductive anti-corrosion coating.

[0050] When it rains, on the one hand, rainwater can penetrate the soil and enter the resistance reduction material, and on the other hand, rainwater gathers in the water reservoir 10. After the rain stops, the water in the water reservoir 10 can enter the annular tube 7 inside the support cover 6 through the water diversion pipe 11, and flow down to multiple annular tubes 7 along the connecting pipe 8, and finally flow evenly in a multi-point manner through the water outlet 9 on the inside of the annular tube 7 to the inside of the resistance reduction material between the support cover 6 and the electrode column 5, thereby replenishing moisture for the resistance reduction material, keeping the material moist, and further continuously improving the conductive efficiency of the grounding device.

[0051] The water diversion pipe 11 is provided with a solenoid valve 12 ; the surface of the electrode column 5 is provided with a humidity sensor 13 ; the humidity sensor 13 is connected to the solenoid valve 12 via a PLC control system.

[0052] The area around the electrode column 5 is monitored in real time through the humidity sensor 13. If the moisture content in the area drops to a certain threshold, the solenoid valve 12 is opened for a period of time through the PLC control system. At this time, the rainwater in the water reservoir 10 can enter the resistance reduction material through the water pipe 11, realizing the function of intelligent water replenishment, which not only ensures that the moisture content inside the resistance reduction material is not too high, but also saves the water consumption of the water reservoir 10, so that the water replenishment can be planned and carried out for a long time.

[0053] As 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 member 17 is fixedly connected between the connecting block 16 and the fixing plate 14; the driving member 17 is made of a water-absorbing and expanding material, which can be a water-absorbing resin, a polymer hydrogel, a shape memory polymer, etc.

[0054] Under normal circumstances, the sealing block 15 can seal the inside of the water outlet 9, and the resistance reduction material and water will not enter the annular tube 7 through the water outlet 9 during the construction process, preventing the water outlet 9 or the annular tube 7 from being blocked. After the construction is completed, the resistance reduction material gradually forms a stable structure. Thereafter, any time the water in the water reservoir 10 enters the annular tube 7, the water contacts the driving member 17, prompting the driving member 17 to absorb water and expand quickly, and push the connecting block 16 and the sealing block 15 to slide outward, thereby realizing the automatic opening of the water outlet 9. The water flow inside the annular tube 7 can be smoothly discharged into the resistance reduction material through the water outlet 9. In addition, the sealing block 15 can press and pull the nearby resistance reduction material during the outward movement, thereby improving the porosity and density of the nearby resistance reduction material, and ensuring that the subsequent water flow can smoothly pass through this place and diffuse into the surrounding resistance reduction material.

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

[0056] By setting the clamping block 19, on the one hand, the connecting block 16 and the sealing block 15 are limited so that they move outward in a predetermined direction. On the other hand, in the process of the sealing block 15 extending outward, the end of the clamping block 19 slides on the surface of the connecting block 16, and finally the clamping block 19 enters the inside of the clamping groove 20 under the pushing action of the spring, thereby locking the connecting block 16 and the sealing block 15, so that the water outlet 9 always remains in an open state, preventing the subsequent driving member 17 from gradually shrinking and recovering after drying, and then pulling the sealing block 15 back to the inside of the water outlet 9 and causing the water outlet 9 to close again. Even if the driving member 17 dries and shrinks, it may absorb water and expand again, but after long-term and multiple cycles of deformation, it is difficult to achieve the initial ideal effect. Therefore, locking the connecting block 16 and the sealing block 15 can avoid the above problems.

[0057] As another embodiment of the present invention, a mounting plate 21 is fixedly connected to the top of the water reservoir 10; a water collection trough 22 is defined in the middle of the mounting plate 21; and a filter 23 is fixedly connected to the inside of the water collection trough 22. The filter 23 intercepts debris in rainwater, preventing it from entering the water reservoir 10 and causing blockage.

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

[0059] During the water collection process, rainwater first enters the water collection tank 22 through the filter screen 23 and accumulates on the surface of the waterproof cloth 25. As the rainwater gradually gathers, the gravity becomes greater and greater, causing the waterproof cloth 25 to sag and bend downward, and pulling the storage roller 24 to rotate to roll up the waterproof cloth 25. At this time, a gap appears between the waterproof cloth 25 and the water collection tank 22, and the water above the waterproof cloth 25 can smoothly enter the water reservoir 10 along the gap to achieve rainwater collection. When the rain stops, no more rainwater enters the water collection tank 22 and applies gravity to the waterproof cloth 25. The coil spring drives the storage roller 24 to reverse and rewind the waterproof cloth 25, so that the waterproof cloth 25 is re-attached to the lower side of the water collection tank 22, thereby sealing the water collection tank 22 to prevent external airflow, exposure, and high temperature environment from causing a large amount of water in the water collection tank 22 to evaporate and dissipate, thereby increasing the storage time of rainwater and extending the water replenishment period as much as possible.

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

[0061] During the process of rolling up or unrolling the waterproof cloth 25 from the surface of the storage roller 24, the waterproof cloth 25 will move in and out of the guide groove 27, and then the elastic tooth block 1 28 and the elastic tooth block 2 29 will squeeze and rub against each other, causing the movement process of the waterproof cloth 25 to have a stuttering and shaking effect, thereby shaking and separating the fine soil impurities remaining on the upper surface of the waterproof cloth 25, causing them to fall with the flow of rainwater. On the one hand, after the waterproof cloth 25 is fitted with the water collection tank 22, it can avoid the presence of impurities between the waterproof cloth 25 and the mounting plate 21, which affects the sealing performance and further reduces the leakage of water vapor to the outside. On the other hand, it can alleviate the problem of stress concentration, shrinkage deformation, physical wear and other phenomena caused by the drying process of cement and soil impurities on the surface of the waterproof cloth 25, thereby extending the service life of the waterproof cloth 25.

[0062] like Figure 9 As shown, the present invention provides a configuration method for wind power grounding in complex mountainous areas. The method uses the above-mentioned configuration device for wind power grounding in complex mountainous areas and includes the following steps:

[0063] S1. Dig up the surface soil around the wind turbine and build a water reservoir 10 10 meters away from the turbine. The water reservoir 10 is treated to prevent water seepage.

[0064] S2. Drill multiple mounting holes using drilling equipment, place the support cover 6 and the electrode column 5 into the mounting holes in sequence, and lay the water diversion pipe 11 between the water reservoir 10 and the annular pipe 7 of the support cover 6;

[0065] S3, mixing the resistance-reducing material with water and pouring it into the annular gap between the support cover 6 and the electrode column 5, adopting layered pouring and vibrating to compact it;

[0066] S4. After the resistance reduction material structure 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 respectively by exothermic welding, and the surface soil is backfilled;

[0067] S5. The area around the electrode column 5 is monitored in real time by the humidity sensor 13. If the moisture content drops to a trigger threshold, the solenoid valve 12 is opened by the PLC control system, and rainwater in the water reservoir 10 enters the annular pipe 7 through the water diversion pipe 11.

[0068] S6: The driving member 17 in the water outlet 9 absorbs water and expands when in contact with water, pushing the connecting block 16 and the sealing block 15 to move outward, thereby automatically opening the water outlet 9;

[0069] S7. The water in the annular tube 7 enters the resistance reducing material through the water outlet 9 and diffuses to the surroundings, replenishing moisture for the resistance reducing material, maintaining a moist state, and ensuring good conductive properties.

[0070] The above-mentioned front, back, left, right, up and down are all based on the Figure 1 As a benchmark, according to the person's observation perspective, 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 the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention.

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

Claims

1. A configuration device suitable for wind power grounding in complex mountainous areas, characterized by: It comprises an inner ring grounding grid (1), an outer ring grounding grid (2) and a vertical grounding electrode assembly; The inner ring grounding grid (1) and the outer ring grounding grid (2) are both concentrically arranged around the wind turbine tower; a group of vertical grounding electrode assemblies are provided and are evenly distributed on the surfaces of the inner ring grounding grid (1) and the outer ring grounding grid (2); conductive strips (3) are provided between adjacent vertical grounding electrode assemblies of the inner ring grounding grid (1) and the outer ring grounding grid (2); The vertical grounding electrode assembly is used to introduce the current of the wind power tower into the earth; the vertical grounding electrode assembly comprises a welding seat (4), an electrode column (5) and a support cover (6); The welding seat (4) is used for welding with the inner ring grounding grid (1), the outer ring grounding grid (2) and the conductive strip (3); an electrode column (5) is fixedly connected to the lower side of the welding seat (4); a support cover (6) is provided on the outer side of the electrode column (5), and the support cover (6) is of a mesh design; and a resistance-reducing material is filled between the support cover (6) and the electrode column (5).

2. The configuration device for wind power grounding in complex mountainous areas according to claim 1, characterized in that: A group of annular tubes (7) are evenly distributed on the inner side of the support cover (6); adjacent annular tubes (7) are interconnected through a group of connecting tubes (8); a group of water outlets (9) are evenly distributed on the inner side of the annular tubes (7); a group of water reservoirs (10) are evenly distributed on the outer side of the outer ring grounding grid (2); a water diversion pipe (11) is connected between the water reservoir (10) and a top annular tube (7); and the surface of the electrode column (5) is coated with a conductive anti-corrosion coating.

3. The configuration device for wind power grounding in complex mountainous areas according to claim 2, characterized in that: The water diversion pipe (11) is provided with a solenoid valve (12); the surface of the electrode column (5) is provided with a humidity sensor (13); the humidity sensor (13) is connected to the solenoid valve (12) via a PLC control system.

4. The configuration device for wind power grounding in complex mountainous areas according to claim 3, characterized in that: A fixing plate (14) and a sealing block (15) are provided inside the water outlet (9), and the fixing plate (14) is of a mesh design; a connecting block (16) is fixedly connected to the surface of the sealing block (15); a driving member (17) is fixedly connected between the connecting block (16) and the fixing plate (14); and the driving member (17) is made of a water-absorbing and expanding material.

5. The configuration device for wind power grounding in complex mountainous areas according to claim 4, characterized in that: A pair of slide rails (18) are provided on the inner wall surface of the water outlet (9); a clamping block (19) is slidably connected inside the slide rail (18), and the clamping block (19) is attached to the surface of the connecting block (16); a spring is fixedly connected between the clamping block (19) and the slide rail (18); and a pair of clamping grooves (20) are provided on the surface of the connecting block (16).

6. The configuration device for wind power grounding in complex mountainous areas according to claim 5, characterized in that: A mounting plate (21) is fixedly connected to the top of the water reservoir (10); a water collecting trough (22) is provided in the middle of the mounting plate (21); and a filter screen (23) is fixedly connected to the inside of the water collecting trough (22).

7. The configuration device for wind power grounding in complex mountainous areas according to claim 6, characterized in that: A pair of storage rollers (24) are rotatably connected to the inside of the mounting plate (21); a coil spring is provided between the storage rollers (24) and the mounting plate (21); a waterproof cloth (25) is wound between the pair of storage rollers (24), and the waterproof cloth (25) is attached to the lower side of the water collecting tank (22).

8. The configuration device for wind power grounding in complex mountainous areas according to claim 7, characterized in that: The mounting plate (21) is fixedly connected to a guide block (26) at a position corresponding to the receiving roller (24); a guide groove (27) is provided inside the guide block (26), and the waterproof cloth (25) passes through the guide groove (27); a group of elastic tooth blocks (28) are evenly distributed at the bottom of the guide groove (27); a group of elastic tooth blocks (29) are evenly distributed on the lower side of the waterproof cloth (25) at a position corresponding to the guide block (26).

9. A configuration method for wind power grounding in complex mountainous areas, the method using the configuration device for wind power grounding in complex mountainous areas according to claim 8, characterized in that: The following steps are involved: S1. Excavate the surface soil around the wind turbine and dig and build a water reservoir (10) 10 meters away from the turbine. The water reservoir (10) is treated to prevent water seepage. S2. Drilling a plurality of mounting holes using a drilling device, placing the support cover (6) and the electrode column (5) into the mounting holes in sequence, and laying a water diversion pipe (11) between the water reservoir (10) and the annular pipe (7) of the support cover (6); S3, mixing the resistance-reducing material with water and then pouring it into the annular gap between the support cover (6) and the electrode column (5), during which the material is poured in layers and vibrated to make it dense; S4. After the resistance reduction material structure is stabilized, the welding seat (4) is welded to the inner ring grounding grid (1), the outer ring grounding grid (2), and the conductive strip (3) respectively by exothermic welding, and the surface soil is backfilled.

10. A configuration method for wind power grounding in complex mountainous areas according to claim 9, characterized in that: The following steps are also included: S5. The area around the electrode column (5) is monitored in real time by the humidity sensor (13). If the moisture content drops to a trigger threshold, the solenoid valve (12) is opened by the PLC control system, and rainwater in the water reservoir (10) enters the interior of the annular pipe (7) through the water diversion pipe (11); S6, the driving member (17) in the water outlet (9) absorbs water and expands when in contact with water, pushing the connecting block (16) and the sealing block (15) to move outward, thereby realizing the automatic opening of the water outlet (9); S7. The water in the annular tube (7) enters the interior of the resistance-reducing material through the water outlet (9) and diffuses to the surroundings, replenishing moisture for the resistance-reducing material, maintaining a moist state, and ensuring good conductive properties.

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