Anemometer tower for preventing tower shadow effect

Abstract

The utility model provides an anemometer tower for preventing a tower shadow effect, which comprises a rhombic combined tower frame, a plurality of groups of sensor assemblies are arranged outside the rhombic combined tower frame at different heights, each group of sensor assembly comprises four anemometers and an anemoscope, the anemometers are uniformly distributed along the radial direction of the cross section of the rhombic combined tower frame, and the anemometers are uniformly distributed along the radial direction of the cross section of the rhombic combined tower frame. The anemoscope is arranged at a main wind direction position which is 1-2m below the anemoscope; the wind meters in different directions are additionally arranged on the independently designed rhombic combined tower, so that accurate wind measurement can be carried out in any wind direction, and a tower shadow effect or a wind speed measurement error caused by untimely wind facing is effectively avoided; meanwhile, the structure of the tower body is not changed on a large scale, maintenance is more convenient, and the device has the advantages of being accurate in measurement, high in practicability, high in economic benefit and wider in selectivity.

Description

Technical Field

[0001] The utility model relates to the technical field of wind resource assessment for wind power generation, in particular to a wind measurement tower for preventing tower shadow effect. Background Art

[0002] With the vigorous development of the wind power industry, the development of wind resource assessment technology has made great strides. Regions with more obvious wind resources will give priority to the construction of wind farms. In the era of parity, accurately grasping excellent resources is an important basis for the feasibility of project construction. Wind farm resource assessment is mainly based on the representative wind tower data of the project site. For wind speed sensors in wind resource assessment, the tower shadow effect will be produced due to the influence of the layout position. The tower shadow effect is a negative effect that occurs in the process of wind turbine power generation. When the wind flows through the tower, the flow field will change, affecting the direction and size of the wind vector. It is mainly for downwind wind turbines. Because part of the air passes through the tower and then blows to the wind wheel, the tower interferes with the airflow flowing through the blades and forms the so-called tower shadow effect, which affects the observation and recording of the actual wind vector by the wind measuring instrument.

[0003] The patent application document with publication number CN115839192A discloses a wind tower that can reduce the tower shadow effect. The driving device is controlled to rotate or stop according to the change of the main wind direction under the control of the tower shadow determination mechanism, and the anemometer position is automatically adjusted to the wind to reduce the tower shadow effect. However, when the wind direction changes frequently, this wind tower that automatically adjusts the anemometer position will not be able to adjust to the wind in time, resulting in errors in wind speed measurement. In addition, the wind tower has a large structural change to the tower body itself, which increases the difficulty and cost of later maintenance. Summary of the invention

[0004] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the utility model is to provide a wind measuring tower for preventing the tower shadow effect, and combine the structure of the diamond-shaped combined tower to add multiple anemometers in different directions, and measure wind in multiple directions at the same time. The wind direction is determined by the wind vane, and the wind direction data is combined with the wind speed in the corresponding direction. Finally, a set of wind measurement data is generated that is more accurate than that of traditional wind measuring towers, which has the characteristics of accurate measurement, strong practicality, high economic benefits and wider selectivity.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A wind measuring tower for preventing tower shadow effect comprises a rhombus-shaped combined tower frame 1. A plurality of sensor assemblies are arranged at different heights on the rhombus-shaped combined tower frame 1. Each sensor assembly comprises a plurality of anemometers 3 and a wind vane 4.

[0007] The number of the anemometers 3 is preferably four, which are evenly distributed radially along the cross section of the rhombus-shaped combined tower 1 , and are vertically installed between adjacent anemometers 3 .

[0008] The wind vane 4 is installed at the main wind direction position 1 meter to 2 meters below the anemometer 3.

[0009] The anemometer 3 is fixed on the first mounting bracket 5 , the first mounting bracket 5 is connected to one end of the first cross arm 6 , and the other end of the first cross arm 6 is fixed on the rhombus combined tower 1 .

[0010] The wind vane 4 is fixed on the second mounting bracket 7 , the second mounting bracket 7 is connected to one end of a second cross arm 8 , and the other end of the second cross arm 8 is fixed on the rhombus combined tower 1 .

[0011] When the height of the diamond-shaped combined tower 1 is 30 meters, one set of sensor assemblies is configured; thereafter, as the height of the diamond-shaped combined tower 1 increases by 20 meters, one set of sensor assemblies is correspondingly added.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. The utility model adopts a self-designed diamond-shaped combined tower 1, the unique structure of which significantly enhances the overall structural stability and wind resistance, and improves the safety and service life of the wind measurement tower.

[0014] 2. The utility model realizes accurate wind measurement under any wind direction by installing anemometers 3 in different directions on the independently designed diamond-shaped combined tower 1, effectively avoiding the wind speed measurement error caused by the tower shadow effect or untimely wind response, thereby improving the accuracy of measurement and enhancing practicality.

[0015] 3. Compared with the traditional method of making large-scale changes to the structure of the wind tower, the design changes of the utility model are relatively small, but can significantly enhance the measurement performance. This design not only effectively reduces maintenance costs, but also improves economic benefits, making the utility model have a wider range of selectivity in practical applications and better meet different wind measurement needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The figure is a three-dimensional schematic diagram of a sensor assembly structure of the utility model.

[0017] Figure 2 It is a front view of the assembly structure of two sets of sensors of the utility model.

[0018] Figure 3 It is a left view of the assembly structure of two sets of sensors of the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0020] See also Figure 1 , Figure 2 A wind measuring tower for preventing tower shadow effect comprises a rhombus combination tower frame 1, a lightning rod 2 is installed on the top of the rhombus combination tower frame 1, and multiple sets of sensor assemblies are arranged on the rhombus combination tower frame 1 at different heights, each set of sensor assemblies comprises multiple anemometers 3 and a wind vane 4.

[0021] like Figure 1 As shown, the number of the anemometers 3 is preferably four, which are evenly distributed radially along the cross section of the rhombus-shaped combined tower 1 , and adjacent anemometers 3 are vertically installed.

[0022] The utility model realizes accurate wind measurement under any wind direction by installing anemometers 3 in different directions on a self-designed rhombus combined tower 1, and effectively avoids wind speed measurement errors caused by tower shadow effect or untimely wind response.

[0023] like Figure 1 , Figure 2 As shown, the wind vane 4 is installed at the main wind direction position 1 to 2 meters below the anemometer 3. The wind vane is mainly used to collect time series data of the wind direction during the wind measurement period, and secondly to match the corresponding anemometer data according to the wind direction at that time.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, the anemometer 3 is fixed on the first mounting bracket 5 , the first mounting bracket 5 is connected to one end of the first cross arm 6 , and the other end of the first cross arm 6 is fixed on the rhombus combined tower 1 .

[0025] like Figure 1 , Figure 2 As shown, the wind vane 4 is fixed on the second mounting bracket 7 , the second mounting bracket 7 is connected to one end of the second cross arm 8 , and the other end of the second cross arm 8 is fixed on the rhombus combined tower 1 .

[0026] According to the actual height of the diamond-shaped combined tower 1, multiple sets of sensor assemblies can be flexibly configured to meet the customized needs in different scenarios. Specifically, when the height of the diamond-shaped combined tower 1 reaches 30 meters, one set of sensor assemblies is configured; when the height reaches 50 meters, two sets of sensor assemblies are configured; when the tower height reaches 70 meters, three sets of sensor assemblies are configured; when the height reaches 90 meters, four sets of sensor assemblies are configured; when the height reaches 110 meters, five sets of sensor assemblies are configured; and so on. As the height of the diamond-shaped combined tower 1 increases, a set of sensor assemblies is added accordingly to ensure comprehensive and accurate monitoring of the tower status and environmental parameters. This design is flexible and can adapt to the needs of towers of different heights and different application scenarios.

[0027] The working principle of the utility model is:

[0028] The design scheme of the wind measurement tower of the present invention is suitable for the wind measurement requirements of most current land wind power projects.

[0029] A diamond-shaped combined tower 1 with the same height as the hub of the wind turbine is erected within the scope of the wind farm area; according to the actual height of the diamond-shaped combined tower 1, multiple groups of sensor assemblies can be flexibly configured, and each group of sensor assemblies is combined with four anemometers 3 evenly distributed radially on the cross-section of the diamond-shaped combined tower 1 to monitor data in four different directions respectively; the anemometer 3 collects data and transmits it to the data acquisition and communication equipment efficiently through a dedicated channel. After receiving the data, the data acquisition and communication equipment processes it according to the precise wind direction data provided by the wind vane 4. By using the data of the wind vane 4, the data acquisition and communication equipment can accurately determine the wind speed value in the corresponding direction, thereby effectively avoiding the influence of the tower shadow effect on the wind speed measurement accuracy; finally, the screened wind measurement data are integrated to form a complete wind measurement data for the height.

Claims

1. A wind tower for preventing tower shadow effect, characterized in that: The invention comprises a rhombus-shaped combined tower (1), wherein a plurality of sensor assemblies are arranged on the outside of the rhombus-shaped combined tower (1) at different heights, and each sensor assembly comprises a plurality of anemometers (3) and a wind vane (4).

2. A wind tower for preventing tower shadow effect according to claim 1, characterized in that: There are four anemometers (3), which are evenly distributed radially along the cross section of the rhombus-shaped combined tower (1), and are vertically installed between adjacent anemometers (3).

3. A wind tower for preventing tower shadow effect according to claim 1, characterized in that: The wind vane (4) is installed at a main wind direction position 1 to 2 meters below the anemometer (3).

4. A wind measurement tower for preventing tower shadow effect according to claim 1 or 2, characterized in that: The anemometer (3) is fixed on a first mounting bracket (5), the first mounting bracket (5) is connected to one end of a first cross arm (6), and the other end of the first cross arm (6) is fixed on the rhombus-shaped combined tower (1).

5. A wind measurement tower for preventing tower shadow effect according to claim 1 or 3, characterized in that: The wind vane (4) is fixed on a second mounting bracket (7), the second mounting bracket (7) is connected to one end of a second cross arm (8), and the other end of the second cross arm (8) is fixed on the rhombus-shaped combined tower (1).

6. A wind measurement tower for preventing tower shadow effect according to claim 1, characterized in that: When the height of the diamond-shaped combined tower (1) is 30 meters, one set of sensor assemblies is configured; thereafter, as the height of the diamond-shaped combined tower (1) increases by 20 meters, one set of sensor assemblies is correspondingly added.

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