Site selection method for swing type power generation windmill and swing type power generation windmill

Abstract

The invention discloses a site selection method for a swing type power generation windmill, the swing type power generation windmill and the site selection method. The site selection method comprises the following steps of S1, obtaining a wind speed distribution diagram and a wind direction occurrence frequency floating distribution diagram of a selected area; meanwhile, a distribution diagram of wind direction frequency floating conditions is obtained; s2, exporting a wind speed distribution diagram of the selected area and a distribution diagram of a wind direction frequency floating condition; s3, delineating an area where the swing type power generation windmill is not suitable for being arranged; s4, establishing a function relationship between wind speed and wind direction frequency floating conditions and windmill density; s5, picking up coordinate data of the wind speed and the wind direction frequency floating condition of the sampling point; s6, performing windmill density distribution simulation; and S7, generating a windmill distribution simulation diagram. Through the swing type power generation windmill site selection method, a designer can be effectively helped to screen a wind power generation area, and the problem that in the prior art, a swing type power generation windmill position layout method is lacked is solved.

Description

Technical Field

[0001] The invention relates to the technical field of wind-driven vibration generators, and mainly to a site selection method for a swing-type power-generating windmill and the swing-type power-generating windmill. Background Art

[0002] The swing-type power generation windmill is a device that uses wind-driven vibration to generate electricity. The micro-sized swing windmill unit has the following advantages: 1. It can efficiently utilize low-speed wind power; 2. It can also generate electricity when the wind direction changes, and it can adapt to environments with high degree of complexity; 3. The generator can be placed on the ground, which is easy to construct and maintain; 4. The small size has less impact on the ecological environment; 4. There is no need to raise the tower, and the small body has a high degree of assembly. For example, the patent application with publication number KR1020180106569A discloses a swing-type power generation windmill. In more detail, the generator has a light upper end swing part, and the swing part transmits the swing force downward through the vibration column when it is blown by the wind. The lower part of the vibration column has a plurality of vibration magnet plates composed of permanent magnets and a winding body with multiple layers of coils wound in various forms. As the vibration column vibrates under the drive of the wind, the permanent magnets on the vibration magnet plate are a kind of wind-driven oscillation generator, which produces horizontal reciprocating vibrations in various horizontal directions of front, back, left, and right, thereby inducing continuous magnetic field changes in the coil of the coil fixing plate winding, thereby generating electricity.

[0003] For example, the National Alpine Skiing Center is located in the southern foothills of Xiaohaituo Mountain in the northern core area of ​​the Yanqing competition zone, which is rich in wind resources, fragile vegetation and single tree species. By analyzing the daily hourly changes in the average wind speed in winter at the A1489 meteorological station in Haituo Mountain, it can be seen that the wind speed fluctuation range in Haituo Mountain in winter is small, the daily average wind speed is 2.99m / s, and the wind speed is stable throughout the day. It can be seen that the delicate and highly sensitive swing windmill is very suitable for this type of low wind speed environment, which can make full use of the wind speed resources of Haituo Mountain and enrich the vegetation appearance through the soft bionic form of the windmill.

[0004] However, since the power generation method of the swing-type windmill is different from that of the traditional fan-type windmill, the macro-site selection method of its wind farm is completely different from that of the existing fan-type windmill. How to select wind power generation areas based on topography, ecological environment and other factors to obtain the location with better wind resources in the area and then arrange the swing-type windmill is a technical problem that technicians in this field need to solve urgently. Summary of the invention

[0005] Therefore, the present invention aims to provide a site selection method for a swing-type wind turbine and a swing-type wind turbine, so as to help designers select wind power generation areas based on factors such as topography, ecological environment, etc., obtain locations with better wind resources in the area, and then arrange swing-type wind turbines, thereby making up for the lack of a location layout method for swing-type wind turbines in the prior art. The present application provides a site selection method for a swing-type wind turbine, comprising the following steps:

[0006] Step S1, obtain the wind speed distribution map and wind direction frequency floating distribution map of the selected area:

[0007] Measure and obtain the spatial continuous wind speed distribution map at different time points in the selected area;

[0008] At the same time, the distribution diagram of the wind direction frequency fluctuation is obtained:

[0009] The wind direction is divided into multiple intervals; the occurrence frequency of the wind direction in each interval is counted in the original wind direction data of each meteorological station;

[0010] The fluctuation of the frequency of each wind direction interval at each meteorological station is determined by the parameter s F Determination, F The frequency of wind direction fluctuation is calculated by the following formula:

[0011]

[0012] Where:

[0013] s F The frequency fluctuation of wind direction;

[0014] Fi is the frequency of wind direction in each interval. When a certain wind direction has no frequency, Fi is recorded as 0; i is the wind direction interval number, and the value of i is 1, 2, 3, ..., n;

[0015] is the average frequency of wind direction occurrence at each weather station;

[0016] Step S2, exporting the wind speed distribution map and the wind direction frequency fluctuation distribution map of the selected area: for the unit grid with a fixed coordinate interval radius within the selected area, the cumulative average wind speed data and the wind direction frequency fluctuation distribution data of the summer and winter months are output, including the sampling point coordinates and the cumulative monthly average wind speed and wind direction frequency fluctuation distribution data;

[0017] Step S3, based on the distribution map in step S2, delineate areas that are not suitable for arranging swing-type power generation wind turbines: delineate areas that are not suitable for building wind turbines within the plane wind speed selection area, including: building perimeters, ecological protection areas, ski tracks, and cableway tracks; and pick up plane curve areas within the scope of wind turbine construction sites;

[0018] Step S4, establishing a functional relationship between the frequency fluctuation of wind speed and wind direction and windmill density:

[0019] Establish the average wind speed b and wind direction frequency fluctuation s for the selected month F , and the functional relationship between the two and the windmill location density value Y (units / hundred square meters) within the radius of the unit sampling point:

[0020]

[0021] Where:

[0022] b is the average wind speed;

[0023] s F The wind direction frequency fluctuation recorded in step S1;

[0024] Y is the windmill location density value within the radius of the unit sampling point;

[0025] Step S5, picking up the coordinate data of the wind speed and wind direction frequency fluctuation of the sampling point:

[0026] Pick up the coordinate data file of the frequency fluctuation of wind speed and wind direction at the sampling point, establish the point object within the selection range, and the (X, Y) coordinates of the entity point correspond to the actual coordinate point, using a unified coordinate system;

[0027] Step S6, performing windmill density distribution simulation: for each entity point in step S5, a unit grid range with a fixed coordinate interval radius is established, and random point distribution is performed. The number of distribution points is the Y value of each sampling point, and the association between windmill density simulation and continuous wind speed and wind direction frequency fluctuation sampling is established;

[0028] Step S7, generating a windmill distribution simulation map: placing the random points simulated in step S6 within the selected area, forming a distribution map on the general plan of the selected area with a dot density based on the fluctuation of wind speed and wind direction; picking up the (X, Y) coordinates of the points according to the distribution map, that is, selecting the site for the windmill in the area.

[0029] Optionally, in step S1, ArcGIS Pro software is used to apply an interpolation tool to obtain a spatially continuous wind speed distribution map at different time points in the selected area; and / or,

[0030] In step S1, the wind direction is divided into 12 intervals, wherein each 30° range is a wind direction interval;

[0031]

[0032] Among them, the s of each weather station F The smaller it is, the smaller the fluctuation of the frequency of wind direction is; since there is wind in each wind direction interval and the wind is not dominated by a single wind direction, that is, there are many wind direction intervals and the frequency of each interval does not fluctuate much, which is conducive to the power generation of the swing-type wind turbine;

[0033] ArcGIS Pro software was used to apply the interpolation tool to the wind direction frequency fluctuation data of all meteorological stations to obtain the distribution map of the spatial wind direction frequency fluctuation at different time points in the selected area.

[0034] Optionally, in step S2, the distribution data of the average wind speed data and the fluctuation frequency of wind direction in typical summer and winter months for unit grids with a fixed coordinate interval radius within the selected area are output in ArcGIS Pro software, including the sampling point coordinates and the distribution data of the fluctuation frequency of the average wind speed and wind direction in typical months, and exported in Excel file format.

[0035] Optionally, in step S3, the three-dimensional modeling and analysis software Rhino is used to circle out areas that are not suitable for building windmills within the plane wind speed selection area, including building perimeters, ecological protection areas, ski tracks and cableway tracks; and the Rhino built-in plug-in Grasshopper is used to pick up the plane curve area within the scope of the final windmill construction site.

[0036] Optionally, in step S4, the relationship between the windmill location density value Y within the unit sampling point radius and the power generation windmill layout density is as follows:

[0037] When the Y value is 0<Y≤0.21, the density of wind turbines is 2 per 100 square meters;

[0038] When the Y value is 0.21<Y≤0.5, the density of wind turbines is 5 per 100 square meters;

[0039] When the Y value is 0.5<Y≤0.79, the density of wind turbines is 10 per 100 square meters;

[0040] When the Y value is 0.79<Y, the layout density of wind turbines is 15 per 100 square meters.

[0041] Optionally, in step S5, the built-in parametric plug-in Grasshopper of Rhino is used to pick up the coordinate data file of the frequency fluctuation of wind speed and wind direction at the sampling point, and a point object within the selection area is established. The (X, Y) coordinates of the entity point correspond to the actual coordinate point, and a unified coordinate system is used.

[0042] Optionally, in step S6, the built-in parametric plug-in Grasshopper of Rhino is used to establish a unit grid range with a fixed coordinate interval radius for each entity point, and the Grasshopper plug-in populat2D command is used to perform random point distribution. The number of distribution points is the Y value of each sampling point, and the association between the windmill density simulation and the continuous wind speed and wind direction frequency floating sampling is established.

[0043] Optionally, the Bake command in Grasshopper is used to place simulated random points within the selected area, forming a distribution map on the general plan of the selected area with the density of the dots representing the fluctuation frequency of wind speed and wind direction; the (X, Y) coordinates of the points are picked up according to the distribution map to select the site for the windmill in the area.

[0044] A swing-type power generation windmill, and a site selection method for the swing-type power generation windmill, comprising:

[0045] A wind catcher, comprising: at least two fan-shaped blades connected in cooperation; the wind catcher has an unfolded state driven to be opened, and a folded state driven to be closed;

[0046] A vibrating column, wherein the wind catcher is arranged at the upper end of the vibrating column, and the vibrating column generates oscillation and swinging under the driving force of wind, converting wind energy into kinetic energy, and transmitting it to the rotor through a mechanical transmission device, and then the generator converts the kinetic energy into electrical energy;

[0047] A wind speed sensor is used to monitor the wind speed at the position of the wind catcher, and is communicated with the wind catcher through a controller to control the wind catcher to switch between the folded state and the unfolded state; when the wind speed sensor detects that the wind speed is within the working range of the wind catcher, the wind catcher switches to the unfolded state to form a large fan to capture wind energy; when the wind speed sensor detects that the wind speed is less than or greater than the working range of the wind catcher, the wind catcher switches to the folded state.

[0048] Optionally, the fan-shaped blade is a hollow bag structure of a membrane structure, and the fan-shaped blade is connected to an inflation mechanism;

[0049] The outer contour edge of the fan-shaped blade is also provided with a frame for maintaining the fan-shaped blade in a stored shape; when the fan-shaped blade is inflated, the air pressure overcomes the elastic force of the frame to switch the fan-shaped blade to the expanded state.

[0050] Optionally, the frames at the edge positions of the adjacent fan-shaped blades are connected by hinges, so that the wind catcher forms a rod-shaped structure in a folded state to reduce wind resistance; and / or,

[0051] The connecting section between the wind catcher and the vibration column has a contraction section with a diameter smaller than that of the vibration column, so as to enhance the swing amplitude of the wind catcher.

[0052] The technical solution of the present invention has the following advantages:

[0053] 1. The site selection method for swing-type power-generating wind turbines provided by the present invention comprises the following steps: step S1, obtaining a wind speed distribution map and a wind direction frequency fluctuation distribution map of a selected area; at the same time, obtaining a distribution map of the wind direction frequency fluctuation situation; step S2, deriving the wind speed distribution map and the wind direction frequency fluctuation distribution map of the selected area; step S3, delineating an area that is not suitable for arranging swing-type power-generating wind turbines; step S4, establishing a functional relationship between the wind speed and wind direction frequency fluctuation situation and the wind turbine density; step S5, picking up the coordinate data of the wind speed and wind direction frequency fluctuation situation of the sampling point; step S6, performing a wind turbine density distribution simulation, and establishing an association between the wind turbine density simulation and the continuous wind speed and wind direction frequency fluctuation situation sampling; step S7, generating a wind turbine distribution simulation map.

[0054] In the present invention, through the site selection method specially designed for the swing-type wind turbine, it can effectively help designers to screen wind power generation areas in combination with topography, ecological environment and other factors, obtain the location with better wind resources in the area, and then arrange the swing-type wind turbine, which makes up for the lack of the location layout method of the swing-type wind turbine in the prior art. The above-mentioned swing-type wind turbine can be effectively adapted to the environment with small wind speed fluctuation range and low wind speed in winter such as Haituo Mountain. Moreover, the above-mentioned swing-type wind turbine can also be matched with forest species to enrich the vegetation appearance.

[0055] Furthermore, the present invention also specifically discloses: a parameter s for measuring the fluctuation of the frequency of occurrence of each wind direction interval at each weather station F Its determination formula. And, through the average wind speed b, wind direction frequency fluctuation s F , and the functional relationship established with the windmill location density value Y within the radius of the unit sampling point. The above relationship can be used to scientifically simulate the windmill density distribution and generate a windmill distribution simulation map.

[0056] 2. In the site selection method for a swing-type power generation wind turbine provided by the present invention, in step S1, the wind direction is divided into 12 intervals; wherein each 30° range is a wind direction interval;

[0057]

[0058] Among them, the s of each weather station F The smaller it is, the smaller the fluctuation of the frequency of wind direction is; since there is wind in each wind direction interval and the wind is not dominated by a single wind direction, that is, there are many wind direction intervals and the frequency of each interval does not fluctuate much, which is conducive to the power generation of the swing-type wind turbine;

[0059] ArcGIS Pro software was used to apply the interpolation tool to the wind direction frequency fluctuation data of all meteorological stations to obtain the distribution map of the spatial wind direction frequency fluctuation at different time points in the selected area.

[0060] The present invention also specifically discloses that in step S1, the wind direction is divided into 12 intervals, wherein each 30° range is a wind direction interval. The above interval division can accurately measure the frequency of wind direction occurrence, which is measured by each meteorological station.

[0061] Each weather station F The smaller it is, the smaller the fluctuation of wind direction frequency is, which means that wind occurs in all wind direction intervals and the wind is not dominated by a single wind direction. That is, there are many wind direction intervals and the frequency fluctuation of each interval is not large, which is conducive to the power generation of swing-type wind turbines.

[0062] 3. The site selection method for a swing-type power-generating wind turbine provided by the present invention, in step S2, outputs the distribution data of the average wind speed data and the frequency fluctuation of wind direction in typical months of summer and winter for unit grids with a fixed coordinate interval radius within the selected area in ArcGIS Pro software, including the sampling point coordinates and the distribution data of the average wind speed and wind direction frequency fluctuation of typical months, and exports them in Excel file format.

[0063] In the present invention, ArcGIS Pro software is used to divide the selected area into unit grids with a fixed interval radius, and the annual average wind speed data and wind direction frequency of typical months are sampled, and the data is output to form a digitized Excel file. The above method can effectively help operators to digitize the sampling and refine the sampling point coordinate data.

[0064] 4. In the site selection method for swing-type wind turbines provided by the present invention, in step S4, the relationship between the wind turbine site selection density value Y within the radius of the unit sampling point and the layout density of the wind turbines is as follows:

[0065] When the Y value is 0<Y≤0.21, the density of wind turbines is 2 per 100 square meters;

[0066] When the Y value is 0.21<Y≤0.5, the density of wind turbines is 5 per 100 square meters;

[0067] When the Y value is 0.5<Y≤0.79, the density of wind turbines is 10 per 100 square meters;

[0068] When the Y value is 0.79<Y, the layout density of wind turbines is 15 per 100 square meters.

[0069] In the present invention, the specific values ​​of the wind turbine layout density when the wind turbine location density value Y within the unit sampling point radius is in different parameter ranges are specifically disclosed. When the number of wind turbines is arranged, the economic efficiency of the wind turbines can be effectively guaranteed and the power generation effect can be guaranteed.

[0070] 5. The site selection method for the swing-type power generation wind turbine provided by the present invention, in step S6, uses the built-in parametric plug-in Grasshopper of Rhino to establish a unit grid range with a fixed coordinate interval radius for each entity point, and uses the Grasshopper plug-in populat2D command to perform random point distribution. The number of distribution points is the Y value of each sampling point, and the association between the wind turbine density simulation and the continuous wind speed and wind direction frequency floating situation sampling is established.

[0071] In the present invention, through the built-in parametric plug-in Grasshopper of Rhino, it is possible to establish a unit grid with a fixed coordinate interval radius for each entity point, and to perform random point distribution, so as to establish an association between the windmill density simulation and the sampling of the floating frequency of continuous wind speed and wind direction, and to digitize the sampling information.

[0072] 6. The swing-type power generation windmill provided by the present invention comprises:

[0073] A wind catcher, comprising: at least two fan-shaped blades connected in cooperation; the wind catcher has an unfolded state driven to be opened, and a folded state driven to be closed;

[0074] A vibrating column, wherein the wind catcher is arranged at the upper end of the vibrating column, and the vibrating column generates oscillation and swinging under the driving force of wind, converting wind energy into kinetic energy, and transmitting it to the rotor through a mechanical transmission device, and then the generator converts the kinetic energy into electrical energy;

[0075] A wind speed sensor is used to monitor the wind speed at the position of the wind catcher, and is communicated with the wind catcher through a controller to control the wind catcher to switch between the folded state and the unfolded state; when the wind speed sensor detects that the wind speed is within the working range of the wind catcher, the wind catcher switches to the unfolded state to form a large fan to capture wind energy; when the wind speed sensor detects that the wind speed is less than or greater than the working range of the wind catcher, the wind catcher switches to the folded state.

[0076] In the present invention, the swing-type power-generating windmill has a wind-catching head that can be driven to actively unfold and fold. When the wind speed sensor detects that the wind speed is within a suitable range, the fan-shaped blades of the wind-catching head unfold, so that the swing-type power-generating windmill can effectively obtain wind energy, making it suitable for areas with weak wind resources, realizing low wind speed wind energy capture, and expanding the scope of wind energy utilization.

[0077] 7. The swing-type power-generating windmill provided by the present invention, wherein the fan-shaped blades are hollow balloon structures of a membrane structure, and the fan-shaped blades are connected to an inflation mechanism; the outer contour edge of the fan-shaped blades is also provided with a skeleton for maintaining the fan-shaped blades in a stored shape; when the fan-shaped blades are inflated, the air pressure overcomes the elastic force of the skeleton to switch the fan-shaped blades to the expanded state.

[0078] In the present invention, the fan-shaped blade is provided as a membrane structure blade having a hollow airbag structure, and a frame is provided at the outer contour edge of the fan-shaped blade. When the inflation mechanism inflates the airbag of the fan-shaped blade, the fan-shaped blade expands rapidly, overcomes the elastic force of the frame, and forms a connection surface with the wind. In addition, when the fan-shaped blade is deflated, the wind catcher can be automatically folded under the action of the elastic driving force of the frame.

[0079] 8. In the swing-type power generation windmill provided by the present invention, the frames at the edge positions of the adjacent fan-shaped blades are connected by hinges, so that the wind catcher forms a rod-shaped structure in the folded state to reduce wind resistance.

[0080] In the present invention, the two blades of the hinge are mutually attractive magnetic parts or mutually attractive elastic parts. When the fan-shaped blades are inflated, the adjacent fan-shaped blades overcome the driving force of the hinge folding, so that the adjacent fan-shaped blades are unfolded. When the fan-shaped blades are deflated, the magnetic force or elastic force of the hinge drives the hinge to close, so as to realize the folding action of the wind catcher and reduce wind resistance. The above structure has the advantages of simple structure and reliability.

[0081] 9. In the swing-type power-generating windmill provided by the present invention, the connecting section between the wind-catcher and the vibration column has a contraction section with a diameter smaller than that of the vibration column, so as to enhance the swing amplitude of the wind-catcher.

[0082] In the present invention, by providing a contraction section with a smaller diameter at the connection section between the wind catcher and the vibration column, the wind catcher can have a larger swing amplitude, thereby transmitting a larger swing amplitude to the vibration column, providing a power generation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0084] Figure 1 A schematic diagram of the three-dimensional structure of a swing-type power generation windmill provided by the present invention;

[0085] Figure 2 A front view of the swing-type power generation windmill provided by the present invention;

[0086] Figure 3 This is an enlarged schematic diagram of the wind catcher structure provided by the present invention.

[0087] Description of reference numerals:

[0088] 1- wind catcher; 2- fan-shaped blades; 3- vibration column; 4- hinge; 5- contraction section. DETAILED DESCRIPTION

[0089] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0090] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0091] Example 1

[0092] See also Figure 1 , Figure 1 A schematic diagram of the three-dimensional structure of a swing-type power generation wind turbine in an embodiment of the present invention is shown.

[0093] This embodiment provides a site selection method for a swing-type power generation wind turbine, comprising the following steps:

[0094] Step S1, obtain the wind speed distribution map and wind direction frequency floating distribution map of the selected area:

[0095] ArcGIS Pro software was used to apply the interpolation tool to obtain the spatially continuous wind speed distribution map at different time points in the selected area;

[0096] At the same time, the distribution diagram of the wind direction frequency fluctuation is obtained:

[0097] The wind direction is divided into 12 intervals; each 30° range is considered as a wind direction interval; the frequency of wind direction in each interval is counted in the original wind direction data of each meteorological station;

[0098] The fluctuation of the frequency of each wind direction interval at each meteorological station is determined by the parameter s F Determination, F The frequency of wind direction fluctuation is calculated by the following formula:

[0099]

[0100] Where:

[0101] s F The frequency fluctuation of wind direction; s of each weather station F , represents the fluctuation magnitude of the frequency of wind direction;

[0102] Fi is the frequency of wind direction in each interval. When a certain wind direction has no frequency, Fi is recorded as 0; i is the wind direction interval number, and the value of i is 1, 2, 3, ..., 12;

[0103] is the average frequency of wind direction occurrence at each weather station;

[0104] In this embodiment, ArcGIS Pro software is used to apply the interpolation tool to the wind direction frequency fluctuation data of all meteorological stations to obtain a distribution map of the spatial wind direction frequency fluctuation at different time points in the selected area.

[0105] Step S2, exporting the wind speed distribution map and the wind direction frequency fluctuation distribution map of the selected area: in ArcGIS Pro software, for the unit grid with a fixed coordinate interval radius within the selected area, the cumulative average wind speed data and the wind direction frequency fluctuation distribution data of the summer and winter months are output, including the sampling point coordinates and the cumulative monthly average wind speed and wind direction frequency fluctuation distribution data, and exporting them in Excel file format;

[0106] Step S3, based on the distribution map in step S2, using the three-dimensional modeling analysis software Rhino, the areas that are not suitable for building windmills are circled in the plane wind speed selection area, including the surrounding areas of buildings, ecological protection areas, ski tracks and cableway tracks; and using the Rhino built-in plug-in Grasshopper to pick up the plane curve area of ​​the final windmill construction site range;

[0107] Step S4, establishing a functional relationship between the frequency fluctuation of wind speed and wind direction and windmill density:

[0108] Establish the average wind speed b and wind direction frequency fluctuation s for the selected month F, and the functional relationship between the two and the windmill location density value Y (units / hundred square meters) within the radius of the unit sampling point:

[0109]

[0110] Where:

[0111] b is the average wind speed;

[0112] s F The wind direction frequency fluctuation recorded in step S1;

[0113] Y is the windmill location density within the radius of the unit sampling point.

[0114] Among them, the relationship between the windmill location density value Y within the unit sampling point radius and the power generation windmill layout density is as follows:

[0115] When the Y value is 0<Y≤0.21, the density of wind turbines is 2 per 100 square meters;

[0116] When the Y value is 0.21<Y≤0.5, the density of wind turbines is 5 per 100 square meters;

[0117] When the Y value is 0.5<Y≤0.79, the density of wind turbines is 10 per 100 square meters;

[0118] When the Y value is 0.79<Y, the layout density of wind turbines is 15 per 100 square meters.

[0119] Step S5, picking up the coordinate data of the wind speed and wind direction frequency fluctuation of the sampling point:

[0120] The built-in parametric plug-in Grasshopper of Rhino is used to pick up the coordinate data file of the frequency fluctuation of wind speed and wind direction at the sampling point, and the point object within the selection range is established. The (X, Y) coordinates of the entity point correspond to the actual coordinate point, and a unified coordinate system is used;

[0121] Step S6, simulate the windmill density distribution: use the built-in parametric plug-in Grasshopper in Rhino to establish a unit grid range with a fixed coordinate interval radius for each entity point in step S5. Use the Grasshopper plug-in populat2D command to distribute random points, the number of distribution points is the Y value of each sampling point, and establish the association between the windmill density simulation and the sampling of the floating frequency of continuous wind speed and wind direction;

[0122] Step S7, generate a windmill distribution simulation map: use the Bake command in Grasshopper to place the random points simulated in step S6 within the selected area, and form a distribution map on the general plan of the selected area with a dot density that changes based on the frequency of wind speed and wind direction; pick up the (X, Y) coordinates of the points according to the distribution map, which is the site selection for the windmills in the area.

[0123] Of course, the present invention does not impose any specific restrictions on the number of intervals into which the wind direction is divided in step S1. In other embodiments, the wind direction may be divided into 10 intervals, wherein each 36° range is regarded as a wind direction interval, and the occurrence frequency of the wind direction in each interval is counted in the original wind direction data of each meteorological station. Alternatively, the number of wind direction intervals may be adaptively adjusted as needed.

[0124] Of course, the present invention does not impose any specific restrictions on the software used for floating analysis of the wind speed distribution map and wind direction frequency in the selected area. In other embodiments, other software besides ArcGIS Pro software can also be used for data analysis and calculation.

[0125] Example 2

[0126] See also Figure 1 and Figure 2 , Figure 1 A schematic diagram of the three-dimensional structure of a swing-type power generation wind turbine in an embodiment of the present invention is shown. Figure 2 A front view of a swing-type power generation wind turbine in an embodiment of the present invention is shown.

[0127] A swing-type power generation windmill, applied to the site selection method in Example 1, specifically comprises the following structure:

[0128] Catching wind 1, such as Figure 3 The enlarged schematic diagram of the wind catcher structure shown comprises: a plurality of fan-shaped blades 2 that are connected in cooperation; the wind catcher 1 has an unfolded state in which it is driven to be opened, and a folded state in which it is driven to be closed;

[0129] The vibrating column 3, the wind catcher 1 is arranged at the upper end of the vibrating column 3, and the vibrating column 3 generates vibration and swing under the drive of wind, converts wind energy into kinetic energy, and transmits it to the rotor through a mechanical transmission device, and then the generator converts the kinetic energy into electrical energy; Figure 2 As shown, the connecting section between the wind catcher 1 and the vibration column 3 has a contraction section 5 with a diameter smaller than that of the vibration column 3, so as to enhance the swing amplitude of the wind catcher 1;

[0130] The wind speed sensor is used to monitor the wind speed at the position of the wind catcher 1, and is communicated with the wind catcher 1 through a controller to control the wind catcher 1 to switch between the folded state and the unfolded state; when the wind speed sensor detects that the wind speed is within the working range of the wind catcher 1, the wind catcher 1 switches to the unfolded state to form a large-area fan to capture wind energy; when the wind speed sensor detects that the wind speed is less than or greater than the working range of the wind catcher 1, the wind catcher 1 switches to the folded state.

[0131] In this embodiment, if Figure 1 and Figure 3 As shown, the fan-shaped blade 2 is a hollow air bag structure of a membrane structure, and the fan-shaped blade 2 is connected to the inflation mechanism; the outer contour edge of the fan-shaped blade 2 is also provided with a skeleton to maintain the fan-shaped blade 2 in a storage shape; when the fan-shaped blade 2 is inflated, the air pressure overcomes the elastic force of the skeleton to switch the fan-shaped blade 2 to the unfolded state. In addition, the skeletons at the edge positions of the adjacent fan-shaped blades 2 are connected by hinges 4 to realize that the wind catcher 1 forms a rod-shaped structure in the folded state and reduces wind resistance. In this embodiment, the two blades of the hinge 4 are magnetic parts that attract each other. When the fan-shaped blade 2 is inflated, the adjacent fan-shaped blade 2 overcomes the driving force of the hinge 4 to fold, and the adjacent fan-shaped blade 2 is unfolded. When the fan-shaped blade 2 is deflated, the magnetic force of the hinge 4 drives the hinge 4 to close, so as to realize the folding action of the wind catcher 1 and reduce wind resistance.

[0132] The swing-type wind turbine has a wind-catcher 1 that can be driven to actively unfold and fold. When the wind speed sensor detects that the wind speed is within a suitable range, the fan-shaped blades 2 of the wind-catcher 1 are unfolded, so that the swing-type wind turbine can effectively obtain wind energy, making it suitable for areas with weak wind resources, achieving low wind speed wind energy capture, and expanding the scope of wind energy utilization.

[0133] Of course, the present invention does not impose any specific restrictions on the method of driving the hinge 4 to fold. In other embodiments, the two blades of the hinge 4 are elastic members that attract each other. When the fan-shaped blades 2 are inflated, the adjacent fan-shaped blades 2 overcome the driving force of the hinge 4 to fold, so that the adjacent fan-shaped blades 2 are unfolded. When the fan-shaped blades 2 are deflated, the elastic force of the hinge 4 drives the hinge 4 to close, so as to realize the folding action of the wind catcher 1 and reduce wind resistance.

[0134] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A method for selecting a site for a swing-type power generation wind turbine, characterized in that: The following steps are involved: Step s1, obtain the wind speed distribution map and wind direction frequency floating distribution map of the selected area: Measure and obtain the spatial continuous wind speed distribution map at different time points in the selected area; At the same time, the distribution diagram of the wind direction frequency fluctuation is obtained: The wind direction is divided into multiple intervals; the occurrence frequency of the wind direction in each interval is counted in the original wind direction data of each meteorological station; The fluctuation of the frequency of each wind direction interval at each meteorological station is determined by the parameter s F Determination, F The frequency of wind direction fluctuation is calculated by the following formula: Where: s F The frequency fluctuation of wind direction; Fi is the frequency of wind direction in each interval. When a certain wind direction has no frequency, Fi is recorded as 0; i is the wind direction interval number, and the value of i is 1, 2, 3, ..., n; is the average frequency of wind direction occurrence at each weather station; Step S2, exporting the wind speed distribution map and the wind direction frequency fluctuation distribution map of the selected area: for the unit grid with a fixed coordinate interval radius within the selected area, the cumulative average wind speed data and the wind direction frequency fluctuation distribution data of the summer and winter months are output, including the sampling point coordinates and the cumulative monthly average wind speed and wind direction frequency fluctuation distribution data; Step S3, based on the distribution map in step S2, delineate areas that are not suitable for arranging swing-type power generation wind turbines: delineate areas that are not suitable for building wind turbines within the plane wind speed selection area, including: building perimeters, ecological protection areas, ski tracks, and cableway tracks; and pick up plane curve areas within the scope of wind turbine construction sites; Step S4, establishing a functional relationship between the frequency fluctuation of wind speed and wind direction and windmill density: Establish the average wind speed b and wind direction frequency fluctuation s for the selected month F , and the functional relationship between the two and the windmill location density value Y (units / hundred square meters) within the radius of the unit sampling point: Where: b is the average wind speed; s F The wind direction frequency fluctuation recorded in step S1; Y is the windmill location density value within the radius of the unit sampling point; Step S5, picking up the coordinate data of the wind speed and wind direction frequency fluctuation of the sampling point: Pick up the coordinate data file of the frequency fluctuation of wind speed and wind direction at the sampling point, establish the point object within the selection range, and the (X, Y) coordinates of the entity point correspond to the actual coordinate point, using a unified coordinate system; Step S6, performing windmill density distribution simulation: for each entity point in step S5, a unit grid range with a fixed coordinate interval radius is established, and random point distribution is performed. The number of distribution points is the Y value of each sampling point, and the association between windmill density simulation and continuous wind speed and wind direction frequency fluctuation sampling is established; Step S7, generating a windmill distribution simulation map: placing the random points simulated in step S6 within the selected area, forming a distribution map on the general plan of the selected area with a dot density based on the fluctuation of wind speed and wind direction; picking up the (X, Y) coordinates of the points according to the distribution map, that is, selecting the site for the windmill in the area.

2. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S1, using ArcGIS Pro software, using an interpolation tool to obtain a spatially continuous wind speed distribution map at different time points in the selected area; and / or, In step S1, the wind direction is divided into 12 intervals, wherein each 30° range is a wind direction interval; Among them, the s of each weather station F , represents the fluctuation magnitude of the frequency of wind direction; ArcGIS Pro software was used to apply the interpolation tool to the wind direction frequency fluctuation data of all meteorological stations to obtain the distribution map of the spatial wind direction frequency fluctuation at different time points in the selected area.

3. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S2, the ArcGIS Pro software outputs the cumulative average wind speed data and the distribution data of the fluctuation frequency of wind direction in summer and winter months for the unit grid with a fixed coordinate interval radius within the selected area, including the sampling point coordinates and the distribution data of the fluctuation frequency of the cumulative average wind speed and wind direction, in Excel file format.

4. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S3, the three-dimensional modeling and analysis software Rhino is used to identify areas that are not suitable for building windmills within the plane wind speed selection area, including the surrounding areas of buildings, ecological protection areas, ski tracks and cableway tracks; and the Rhino built-in plug-in Grasshopper is used to pick up the plane curve area within the scope of the final windmill construction site.

5. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S4, the relationship between the wind turbine location density value Y within the unit sampling point radius and the wind turbine layout density is as follows: When the Y value is 0<Y≤0.21, the density of wind turbines is 2 per 100 square meters; When the Y value is 0.21<Y≤0.5, the density of wind turbines is 5 per 100 square meters; When the Y value is 0.5<Y≤0.79, the density of wind turbines is 10 per 100 square meters; When the Y value is 0.79<Y, the layout density of wind turbines is 15 per 100 square meters.

6. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S5, the built-in parametric plug-in Grasshopper of Rhino is used to pick up the coordinate data file of the frequency fluctuation of wind speed and wind direction at the sampling point, and the point object within the selection range is established. The (X, Y) coordinates of the entity point correspond to the actual coordinate point, and a unified coordinate system is used.

7. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S6, the built-in parametric plug-in Grasshopper of Rhino is used to establish a unit grid range with a fixed coordinate interval radius for each entity point, and the Grasshopper plug-in populat2D command is used to perform random point distribution. The number of distribution points is the Y value of each sampling point, and the association between the windmill density simulation and the continuous wind speed and wind direction frequency floating sampling is established.

8. The site selection method for a swing-type power generation wind turbine according to claim 1, characterized in that: In step S7, the simulated random points are placed within the selected area through the Bake command in the Grasshopper to form a distribution map on the general plan of the selected area, in which the density of the dots represents the fluctuation of the frequency of wind speed and wind direction; the (X, Y) coordinates of the points are picked up according to the distribution map to select the site for the windmill in the area.

9. A swing-type power generation windmill, applied to the site selection method for a swing-type power generation windmill according to any one of claims 1 to 8, characterized in that: include: A wind catcher (1) comprises: at least two fan-shaped blades (2) that are connected to each other in a coordinated manner; the wind catcher (1) has an unfolded state in which it is driven to be opened, and a folded state in which it is driven to be closed; A vibration column (3), wherein the wind catcher (1) is arranged at the upper end of the vibration column (3), and the vibration column (3) generates vibration and swing under the drive of wind power, converting wind energy into kinetic energy, and transmitting it to the rotor through a mechanical transmission device, and then the generator converts the kinetic energy into electrical energy; A wind speed sensor is used to monitor the wind speed at the position of the wind catcher (1), and is connected to the wind catcher (1) through a controller to control the wind catcher (1) to switch between the folded state and the unfolded state; when the wind speed sensor detects that the wind speed is within the working range of the wind catcher (1), the wind catcher (1) switches to the unfolded state to form a large fan surface to capture wind energy; when the wind speed sensor detects that the wind speed is less than or greater than the working range of the wind catcher (1), the wind catcher (1) switches to the folded state.

10. The swing-type power generation wind turbine according to claim 9, characterized in that: The fan-shaped blade (2) is a hollow air bag structure of a membrane structure, and the fan-shaped blade (2) is connected to the inflation mechanism; The outer contour edge of the fan-shaped blade (2) is also provided with a frame for maintaining the fan-shaped blade (2) in a stored shape; when the fan-shaped blade (2) is inflated, the air pressure overcomes the elastic force of the frame to switch the fan-shaped blade (2) to the expanded state.

11. The swing-type power generation wind turbine according to claim 10, characterized in that: The frames at the edge positions of the adjacent fan-shaped blades (2) are connected via hinges (4) so ​​that the wind catcher (1) forms a rod-shaped structure in a folded state to reduce wind resistance; and / or, The connecting section between the wind catcher (1) and the vibration column (3) has a contraction section (5) having a diameter smaller than that of the vibration column (3), so as to enhance the swing amplitude of the wind catcher (1).

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