Method for greatly improving generating capacity of wind power plant

Abstract

The invention provides a method for greatly improving the generating capacity of a wind power plant, the method has the characteristics of efficient wind gathering, multi-stage acceleration and all-weather power generation, the natural wind speed is increased to more than 4 times of the original natural wind speed by combining a first wind collecting horn, a second wind collecting horn and a venturi tube with a fluid dynamics principle, and the natural wind speed is increased to more than 4 times of the original natural wind speed. The speed increasing fan is used for further increasing the wind speed when natural wind is insufficient, so that continuous and efficient operation of the turbine wind generating set is ensured; the system also greatly improves the generating capacity and the wind energy utilization rate through a plurality of generator sets and residual wind energy utilization devices (such as a three-blade wind driven generator and a wind-shield wall), solves the problems of short generating time, low efficiency and natural wind speed limitation of the existing wind power plant, realizes the economic benefit that the input-output ratio exceeds 1: 5, is suitable for regions with various wind power conditions, and has wide application prospects. The method is of great significance to power grid stability and clean energy popularization.

Description

Technical Field

[0001] This invention relates to the field of wind power generation technology, and in particular to a method for significantly increasing the power generation of a wind farm. Background Technology

[0002] With the continued growth of global energy demand and increasing environmental awareness, wind power, as an important component of clean and renewable energy, has experienced rapid development in recent years. Wind energy resources are abundant and widely distributed, especially in coastal and high-altitude areas with significant development potential. Currently, wind farms have become a key part of the energy structure of many countries, converting wind energy into electricity through wind turbines to reduce dependence on fossil fuels and greenhouse gas emissions. Existing wind farms typically use three-bladed horizontal-axis wind turbines, utilizing natural wind to drive the turbine's rotation, which in turn drives the generator to produce electricity. While the design and operation of wind farms have matured, practical applications are still limited by the instability of natural wind and its geographical distribution.

[0003] Existing wind farm technology faces numerous challenges. First, wind farms can only generate electricity using wind speeds between 3 and 25 meters per second, with rated generating wind speeds concentrated between 9 and 12 meters per second. This results in only 2,000 to 4,000 hours of cumulative annual power generation, representing only 22.83% to 45.7% of the year, and a turbine utilization rate as low as around 30%. Second, turbines are idle for most of the time, leading to equipment downtime and posing challenges to grid stability. This often necessitates compensation from other energy sources such as thermal power, increasing operating costs and environmental pollution. Furthermore, high-quality wind farms are often built in mountainous or remote areas, incurring high construction and operation costs. Onshore wind farm development is nearing saturation, forcing the industry to shift towards offshore wind power, which faces even higher technical and economic barriers. In areas with low to medium wind speeds, the annual power generation time is less than 2,000 hours, making it economically unviable and thus abandoned. Furthermore, when wind speeds are too high (e.g., exceeding 25 m / s), wind turbines must be shut down to ensure equipment safety, further limiting power generation efficiency. Existing wind-gathering devices (such as wind-gathering horns) have limited ability to increase wind speed, rarely exceeding twice the natural wind speed. Additionally, three-bladed wind turbines have low wind energy utilization rates, typically equipped with only a single generator, resulting in limited power output and inability to meet large-scale energy demands.

[0004] Therefore, there is an urgent need in this field to solve the problems of how to increase the power generation of wind farms, extend the power generation time, reduce the dependence on natural wind power, and improve the efficiency of wind energy utilization, so as to achieve the economic feasibility of wind power and grid stability. Summary of the Invention

[0005] The purpose of this invention is to provide a method for significantly increasing the power generation of wind farms, thereby solving the problems existing in the prior art.

[0006] To achieve the above object, the present invention provides the following solutions: The present invention provides a method for significantly increasing the power generation of a wind farm, including the following steps: Step 1, fabricate a wind collecting horn assembly and a central air duct: The wind collecting horn assembly consists of multiple connected first wind collecting horns, including an inner ring support rod and an outer ring support rod. The inner ring support rod and the outer ring support rod are connected by building materials to form a 360-degree seamless horn opening structure. The large opening end on the outside of the horn opening structure is open as the air inlet, and the small opening end of the horn opening structure is provided with multiple window panes. Window leaves that open from the outside to the inside are installed on the window panes. One side of the window leaves is connected by a spring hinge, and the other side is adsorbed to the window panes by a magnetic device for automatic opening and closing under the action of wind; The central air duct is located at the center of the inner cavity of the wind collecting horn assembly to form a vertical channel, and its top and bottom are sealed by building materials; Step 2, set up a wind discharge door: A wind discharge door is set at the lower part of the central air duct in the non-air guiding pipe direction for discharging wind when the wind force is too large; Step 3, fabricate a second wind collecting horn and install a first speed-up fan: A first speed-up fan is set on one side of the lower part of the air guiding pipe. The second wind collecting horn is set outside the first speed-up fan to collect the wind of all speed-up fans. The first speed-up fan is equipped with a speed regulation switch for speeding up when the natural wind speed is insufficient; Step 4, install a generator set pipeline and a first turbine wind power generation set: Connect the tail end of the second wind collecting horn with a pipeline. A Venturi tube is installed in the air guiding pipe, and a first turbine wind power generation set is set in the Venturi tube. A wind dispersing horn is provided at the end of the air guiding pipe.

[0007] Preferably, in step 1, the inner ring support rod and the outer ring support rod are arranged in a "hui" character shape.

[0008] Preferably, in step 1, the height of the outer ring support rod is more than 10% higher than the height of the inner ring support rod.

[0009] Preferably, in step 1, a downspout is also installed in the central air duct for discharging rainwater at the top.[[ID=…]]

[0010] Preferably, in step 3, the number of the first speed-up fans is one or more. Multiple first speed-up fans are installed in parallel, and the wind direction of the first speed-up fans is the same as the natural wind direction.

[0011] Preferably, it further includes: Step 5, when the wind condition is not good, install a second speed-up fan in front of the first turbine wind power generation set. The number and specifications of the second speed-up fans are the same as those of the first speed-up fans.

[0012] Preferably, the method further includes: step six, under favorable wind conditions, installing a second turbine wind turbine generator set, wherein the second turbine wind turbine generator set is installed in series with the first turbine wind turbine generator set or installed separately from the second speed-up wind turbine.

[0013] Preferably, the number of the first speed-up wind turbines is 2-3 sets, used to support the operation of the first turbine wind turbine generator set and the second turbine wind turbine generator set.

[0014] Preferably, the method further includes: step seven, installing a three-bladed wind turbine generator in front of the air outlet of the wind-dispersing horn to generate electricity using surplus wind energy.

[0015] Preferably, the method further includes: step eight, setting up a windbreak wall in front of the three-bladed wind turbine to prevent backflow of natural wind from the opposite direction.

[0016] The present invention achieves the following beneficial technical effects compared to the prior art: This invention provides a method for significantly increasing the power generation of wind farms, featuring efficient wind concentration, multi-stage speed-up, and all-weather power generation. It utilizes a combination of first and second wind-collecting horns and a Venturi tube, along with fluid dynamics principles, to increase the natural wind speed to more than four times its original value. Furthermore, a speed-up fan further accelerates the wind speed when natural wind is insufficient, ensuring the continuous and efficient operation of the turbine wind turbine generator set. The system also significantly improves power generation and wind energy utilization efficiency through multiple generator sets and residual wind energy utilization devices (such as three-bladed wind turbines and windbreaks). This solves the problems of short power generation time, low efficiency, and natural wind speed limitations in existing wind farms, achieving an economic benefit with an input-output ratio exceeding 1:5. It is applicable to areas with various wind conditions and is of great significance for grid stability and the promotion of clean energy. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a wind power generation device manufactured for the method of significantly increasing wind farm power generation provided by the present invention; Figure 2 A schematic diagram of the speed-up wind turbine structure in a method for significantly increasing the power generation of a wind farm provided by the present invention. Detailed Implementation

[0019] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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 limitations on the invention.

[0020] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0021] 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.

[0022] The purpose of this invention is to provide a method for significantly increasing the power generation of wind farms. By optimizing the wind energy collection, acceleration, and utilization process, a significant improvement in wind power generation efficiency is achieved. The core of this method lies in constructing a multi-stage wind-gathering and acceleration system, combining fluid dynamics principles and controllable acceleration technology to ensure that the generator set can operate efficiently under various wind conditions.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1: First, the method of this invention begins with the fabrication of the air-collecting horn assembly and the central air duct. For example... Figure 1As shown, the wind-gathering horn assembly adopts a "U"-shaped structure, including an inner ring support rod 1 and an outer ring support rod 2. The height of the outer ring support rod 2 is more than 10% higher than that of the inner ring support rod 1 to form an effective airflow gradient. The distance between the rods does not exceed 25 meters; if it does, additional rods are required to ensure structural stability. The tops and middle sections of the inner and outer rings of rods are connected in pairs with building materials to form four connected first wind-gathering horns 3. The horn opening is aligned with the local prevailing wind direction to maximize the capture of natural wind. The outer end of the horn has a fully open inlet to facilitate the influx of natural wind; while the bottom inner side of the horn has a 2m × 1m rectangular window lattice 4. Window slats 5 that open from the outside in are installed on the window lattice 4. One side of the window slats 5 is connected by 3-4 spring hinges, and the other side has a magnetic device to achieve automatic opening, closing, and sealing. When there is wind, the window slats 5 open under the action of the wind, allowing wind to enter the inner cavity; when there is no wind, the window slats close to prevent wind energy leakage. A vertical central air duct 6 is constructed at the center of the air intake horn assembly's inner cavity, with both the top and bottom sealed with building materials to prevent air leakage. A downpipe 7 is also installed inside the central air duct 6 to drain rainwater from the top, ensuring the system operates normally in inclement weather.

[0025] Next, an air vent 9 will be installed at the air intake duct 8 at the lower part of the central air duct 6, such as... Figure 1 As shown, the unloading damper 9 adopts a three-way sliding door design. When the wind speed is too high (e.g., exceeding 25 m / s), the sliding door can be opened manually or automatically to discharge excess wind force, avoid system overload, and ensure equipment safety. This step combines the actual operating needs of the wind farm and solves the problem of wind turbine shutdown under high wind speeds through a controllable unloading mechanism, thus extending the power generation time.

[0026] Next, the second ventilator 10 is fabricated and the first speed-up fan 11 is installed. On the fourth side below the central duct 6, window frames are installed according to the size of the speed-up fan; the number can be one or more. For example... Figure 2 As shown, the first speed-boosting fan 11 is installed in parallel and equipped with a speed control switch to ensure that its wind direction is consistent with the natural wind. The second wind-collecting horn 10 is connected to the outside of the first speed-boosting fan 11 for secondary wind collection and speed boosting. When the natural wind speed is insufficient (such as below the rated power generation wind speed), the speed-boosting fan is activated to increase the wind speed to the high-efficiency power generation range. This step is based on the fluid dynamics formula S1*V1=S2*V2, where S represents the cross-sectional area and V represents the flow velocity. By reducing the cross-sectional area of ​​the flow channel, the wind speed is increased. The design of the second wind-collecting horn 10 increases the wind speed to about twice the combined wind speed (the sum of the natural wind and the fan speed boost), providing sufficient power for subsequent power generation.

[0027] After the wind speed increases, the generator set duct and the first turbine wind turbine generator set 12 are installed. A Venturi tube 13 is installed inside the air intake duct 8, and the first turbine wind turbine generator set 12 is installed inside the Venturi tube 13. The converging section of the Venturi tube 13 further accelerates the airflow and improves the turbine's rotational efficiency. A diffuser horn 14 is installed at the end of the air intake duct 8, and its duct diameter gradually increases to create a diffusion effect, reduce wind resistance, and facilitate ventilation. The first turbine wind turbine generator set 12 generates electricity using the accelerated wind energy, according to the wind turbine power generation principle: P = ½ρ*A*V³*Cp; Where P represents power, ρ represents air density, A represents swept area (A = ½π*R², where π = 3.14159 and R is the radius, i.e., the blade length), V represents wind speed, and Cp represents wind energy density. The power generation P is directly proportional to the cube of the wind speed V, i.e., P ∝ V³. When the wind speed doubles, the power generation increases to eight times; when it triples, the power generation reaches 27 times. This design ensures that the generator set can operate efficiently even in weak wind conditions.

[0028] Example 2: In areas with poor wind conditions, a single set of booster turbines may not be sufficient to maintain efficient power generation. Therefore, a second booster turbine 15 is installed in front of the first turbine wind turbine generator set 12. The number and specifications of the second booster turbine 15 are the same as the first set. Through dual acceleration, the wind speed is further stabilized, ensuring that the generator set remains in a highly efficient state.

[0029] Example 3: In areas with favorable wind conditions, a second wind turbine generator set 16 can be installed, either in series with or staggered from the first set. Simultaneously, the number of speed-up turbines can be increased to 2-3 sets to support the operation of multiple generator sets, significantly increasing overall power generation. This flexible configuration adapts to the wind characteristics of different regions, improving the applicability and economy of the method.

[0030] Example 4: To further utilize the remaining wind energy, a three-bladed wind turbine 17 is installed in front of the air outlet of the wind diffuser 14. The wind exhausted outside the duct still has a certain kinetic energy, which the three-bladed turbine 17 can capture, increasing the total power output. At the same time, a windbreak wall 18 is built at an appropriate position in front of the three-bladed wind turbine 17 to prevent backflow of natural wind from the opposite direction and avoid negative impacts on power generation efficiency.

[0031] This invention achieves efficient all-weather utilization of wind energy through the aforementioned steps. In windless or weak wind conditions, the speed-up turbine, the second wind collector horn, and the Venturi duct ensure sufficient wind speed within the duct to drive the generator set; in strong wind conditions, the unloading damper ensures system safety. The entire system is based on fluid dynamics optimization and incorporates controllable speed-up technology, significantly extending the annual power generation time of the wind farm and increasing its utilization rate to over 50%. Furthermore, although the speed-up turbine consumes some electricity (approximately less than a quarter of the generated power), the input-output ratio exceeds 1:5 because power generation is proportional to the cube of wind speed, resulting in significant economic benefits. This invention is applicable to onshore and offshore wind farms, and has broad application prospects, especially in areas with low to medium wind speeds, and is of great significance for promoting clean energy development and grid stability.

[0032] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0033] It should be noted that the components mentioned in the above embodiments are all general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0034] This invention has illustrated its principles and implementation methods using specific examples. The descriptions of these embodiments are merely illustrative of the method and its core ideas; furthermore, those skilled in the art will recognize that modifications may be made to the specific implementation methods and application scope based on the principles of this invention. Therefore, the content of this specification should not be construed as limiting the invention.

Claims

1. A method for significantly increasing the power generation of a wind farm, characterized in that: It includes the following steps: Step 1, fabricate the air collecting horn assembly and the central air duct: The air collecting horn assembly consists of multiple connected first air collecting horns, including an inner ring support rod and an outer ring support rod. A horn opening structure without gaps in 360 degrees is formed between the inner ring support rod and the outer ring support rod through building materials. The large opening end on the outside of the horn opening structure is open as the air inlet, and multiple window panes are provided at the small opening end of the horn opening structure. Window leaves that open from the outside to the inside are installed on the window panes. One side of the window leaves is connected by a spring hinge, and the other side is adsorbed to the window panes through a magnetic device, for automatically opening and closing under the action of wind force; The central air duct is located at the center of the inner cavity of the air collecting horn assembly, forming a vertical channel, and its top and bottom are sealed by building materials; Step 2, set the air discharge door: An air discharge door is set in the lower part of the central air duct in the non-air guiding pipe direction, for discharging air when the wind force is too large; Step 3, fabricate the second air collecting horn and install the first speed-up fan: The first speed-up fan is set on one side of the lower part of the air guiding pipe. The second air collecting horn is set outside the first speed-up fan to collect the wind of all speed-up fans. The first speed-up fan is equipped with a speed regulation switch, for speeding up when the natural wind speed is insufficient; Step 4, install the generator set pipeline and the first turbine wind power generator: Connect the tail end of the second air collecting horn with a pipeline. A Venturi tube is installed in the air guiding pipe, and the first turbine wind power generator is set in the Venturi tube. A diffuser horn is provided at the end of the air guiding pipe.

2. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: In Step 1, the inner ring support rod and the outer ring support rod are arranged in a "hui" shape.

3. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: In Step 1, the height of the outer ring support rod is more than 10% higher than the height of the inner ring support rod.

4. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: In Step 1, a downspout is also installed in the central air duct, for discharging rainwater at the top.

5. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: In Step 3, the number of the first speed-up fans is one or more. Multiple first speed-up fans are installed in parallel, and the wind direction of the first speed-up fans is the same as the natural wind direction.

6. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: It also includes: Step 5, install a second speed-up fan in front of the first turbine wind power generator under poor wind conditions. The number and specifications of the second speed-up fans are the same as those of the first speed-up fans.

7. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: It also includes: Step 6, install a second turbine wind power generator under good wind conditions. The second turbine wind power generator is installed in series with the first turbine wind power generator or installed错开 with the second speed-up fan. (It's not clear what "错开" exactly means here. Maybe it should be something like "staggered installation".) 8. The method for significantly increasing the power generation of a wind farm according to claim 7, characterized in that: The number of the first speed-up fans is 2 - 3 groups, for supporting the operation of the first turbine wind power generator and the second turbine wind power generator.

9. The method for significantly increasing the power generation of a wind farm according to claim 1, characterized in that: It also includes: Step 7, install a three-blade wind generator in front of the air outlet of the diffuser horn, for generating electricity by using the remaining wind energy.

10. The method for significantly increasing the power generation of a wind farm according to claim 9, characterized in that: It also includes: Step 8, set a windbreak wall in front of the three-blade wind generator, for preventing the reverse natural wind from flowing back.

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