Wind speed measurement system

Abstract

The embodiment of the present application discloses a wind speed measurement system for measuring wind speed in the air. The embodiment of the present application includes: a wind speed measurement system, including: a fixing device, a connecting device, a measuring device and a power device; the fixing device can fix the wind speed measurement system on other objects, and the fixing device is connected to the measuring device through the connecting device; the connecting device is used to connect the measuring device or the power device; the measuring device includes a balancing unit and a measuring unit, wherein the measuring unit is used to measure the wind speed and record the position change of the measuring device, and the balancing unit is used to adjust the inclination angle of the measuring unit so that the measuring unit can measure the wind speed in the horizontal direction; the power device is used to provide upward lift for the wind speed measurement system.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of wind speed measurement, and specifically to a wind speed measurement system. Background Art

[0002] Wind speed measurement is an important part of the development of wind power. When planning an offshore wind farm, it is necessary to evaluate the wind resources in the area, accurately grasp the changing characteristics of the wind in the sea area, and provide necessary data support for offshore wind power development.

[0003] At present, the traditional method of offshore wind measurement is to build an offshore wind tower. The wind tower is mainly fixed at a certain point by using trusses and concrete. Due to the difficulty of offshore construction, the cost of such wind measurement is relatively expensive. The construction cost of an offshore wind tower may be as high as tens of millions of yuan, with high construction costs and long construction period.

[0004] Therefore, there is a need for a low-cost wind speed measurement system for offshore wind speed measurement work. Summary of the invention

[0005] The present application provides a wind speed measurement system that can be quickly deployed to measure wind speed. The wind speed measurement system provided by the first embodiment of the present application includes:

[0006] Fixing devices, connecting devices, measuring devices and power devices;

[0007] The fixing device can fix the wind speed measurement system on other objects, and the fixing device is connected to the measurement device through the connecting device;

[0008] The connecting device is used to connect the measuring device or the power device;

[0009] The measuring device comprises a balancing unit and a measuring unit, wherein the measuring unit is used to measure the wind speed and record the position change of the measuring device, and the balancing unit is used to adjust the inclination angle of the measuring unit so that the measuring unit can measure the wind speed in the horizontal direction;

[0010] The power device is used to provide upward lift for the wind speed measurement system.

[0011] Based on the first embodiment of the present application, in a second embodiment provided by the present application, the connecting unit has an upward lift.

[0012] Based on the first implementation of the present application, or the second implementation provided by the present application, in a third implementation provided by the present application, the measuring device further includes an acceleration measuring unit for measuring the acceleration of the measuring device.

[0013] Based on the first embodiment of the present application, or the second embodiment provided by the present application, or the third embodiment provided by the present application, in a fourth embodiment provided by the present application, a cable for transmitting measurement information is provided in the connection device.

[0014] Based on the first implementation manner of the present application, or the second implementation manner provided by the present application, or the third implementation manner provided by the present application, or the fourth implementation manner provided by the present application, in the fifth implementation manner provided by the present application, the measuring device also includes a sending unit for sending measurement information.

[0015] Based on the fifth implementation manner provided in the present application, in the sixth implementation manner provided in the present application, the sending unit sends the measurement information via radio waves; the measuring device also includes a relay unit, and the relay unit is used to receive and forward measurement information from other measuring devices.

[0016] Based on any one of the above embodiments, in a seventh embodiment provided in the present application, the connection between the connecting device and other devices is detachable.

[0017] Based on any one of the above embodiments, in an eighth embodiment provided in the present application, the wind speed measurement system further includes a data recording device for recording measurement information.

[0018] Based on any one of the above embodiments, in a ninth embodiment provided in the present application, each device of the wind speed measurement system has undergone anti-corrosion treatment.

[0019] Based on any one of the above embodiments, in a tenth embodiment provided in the present application, the measuring device is spherical.

[0020] It can be seen from the above technical solutions that the embodiments of the present application have the following advantages: the present application uses a buoyancy device to send the wind speed measuring equipment into the air to measure the wind speed without the need for expensive fixed trusses or concrete construction processes, thereby greatly reducing the cost of wind speed measurement, especially reducing the cost of offshore wind speed measurement. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of an embodiment provided for this application;

[0022] Figure 2 A schematic diagram of an embodiment provided for this application;

[0023] Figure 3 A schematic diagram of an embodiment provided for this application;

[0024] Figure 4 A schematic diagram of an embodiment provided for this application;

[0025] Figure 5 A schematic diagram of an embodiment provided for this application. DETAILED DESCRIPTION

[0026] The embodiment of the present application provides a lattice-free wind speed measurement system for measuring wind speed, especially for measuring offshore wind speed.

[0027] The development of wind power must first assess the wind resources in the area. In order to accurately grasp the changing characteristics of wind in the sea area and provide necessary data support for offshore wind power development, the first step before development is to measure the wind in the designated sea area. Offshore wind towers or laser radars are the traditional methods for offshore wind measurement at this stage.

[0028] The current wind radar itself is relatively expensive, and the wind radar needs to be installed on a fixed platform or floating. The wind tower is mainly constructed at sea, fixed at a certain point using truss structures and concrete, and has a long construction period. Regardless of the method, the cost of wind measurement is relatively expensive, and the price of setting up an offshore wind tower is as high as tens of millions, with a long construction period and inconvenient transportation. After the offshore wind tower is built, the cost of dismantling it is also high.

[0029] In short, the existing wind measurement methods have major defects in terms of cost, construction period, and secondary recycling.

[0030] Therefore, the present application proposes a low-cost trellis-free wind speed measurement system capable of measuring offshore wind speed.

[0031] See also Figure 1 An embodiment of the wind speed measurement system provided in the present application includes a fixing device 10, a connecting device 20, a measuring device 30 and a power device 40. When measuring wind, the power device 40 floats in the air, a fixing device 10 is provided on or under the sea surface, the fixing device 10 is connected to the measuring device 30 through the connecting device 20, a plurality of measuring devices are provided between the power device 40 and the fixing device 10, and each measuring device 30 is also connected through the connecting device 20.

[0032] A power device 40 is provided at the top of the wind speed measurement system. The power device 40 is filled with helium or other gas, so that the power device 40 has an upward buoyancy. The power device 40 is connected to a measurement device 30 through a connecting device 20. The power source of the power device 40 can also be the lift provided by a power machine such as a propeller or a jet, which is also technically feasible.

[0033] The power device 40 is connected to a measuring device 30 through a connecting device 20. In order to prevent the measuring device 30 from rotating due to the wind speed, the preferred way is to design the measuring device to be spherical or other shapes with low wind resistance, so that the force on the windward surface of the measuring device 30 is basically uniform. The wind speed measurement system includes a plurality of measuring devices, wherein each measuring device 30 is connected to other measuring devices 30, wherein the highest measuring device 30 is connected to the power device 40 through the connecting device 20, the lowest measuring device 30 is connected to the fixed device 10 in the sea, and each of the remaining measuring devices 30 is connected to the other two measuring devices 30 in sequence through the connecting device 30. In a windless state, the wind speed measurement system is arranged from top to bottom in sequence with a floating power device 40, a plurality of measuring devices 30 and a fixed device 10 in the sea, and each device is connected in sequence through the connecting device 30, and the projections of each device on the ground are at the same position, and the position of the measuring device 30 can be said to be at the origin at this time.

[0034] Specifically, the connecting device 30 can be a flexible cable, or a hard connecting rod, connected to other devices through a buckle. When a crosswind passes, the measuring device 30 will be blown away from its original position, and the height and position during measurement will change. Optionally, the connecting device 30 can also have a certain lift, for example, the connecting device 30 itself is hollow, and helium or other gas with a lower density is filled in the connecting device 30, so that the connecting device 30 and the power device 40 can jointly provide lift for the wind speed measurement system.

[0035] The fixing device 10 mainly plays a fixing role, and is used to maintain the wind speed measurement system in a fixed position or sea area, so that it is not carried away by the sea breeze or ocean current. For example, the fixing device 10 can be a caisson, and when the wind speed measurement system is towed to the designated sea area, the caisson is sunk into the water; or the fixing device 10 is an anchor, and the fixing device 10 is sunk into the seabed when measuring the wind. The fixing device 10 can also be used only as a fixing part to fix the entire wind speed measurement system on a ship, anchor or other floating platform. The specific form of the fixing device 10 is not limited here.

[0036] See also Figure 2 , when there is only a crosswind at a lower altitude, the measuring device 30 will be blown away from the origin. If the crosswind speed is large at high altitude and small at lower altitude, you can refer to Figure 3 In addition, in special cases, if there is not only crosswind but also upward airflow from bottom to top, the measuring device 30 may be blown to a higher altitude than the power device 40, but this does not affect the normal operation of the system. The measuring device 30 is an important part of this application, please refer to Figure 5, connecting devices 20 are provided at both ends of the measuring device 30, and the measuring device 30 may include a measuring unit and a balancing unit. The measuring unit mainly includes a plurality of sensors, which are used to measure the wind speed around the measuring device 30 on the one hand, and to measure the offset distance and current height of the measuring device 30 relative to the origin on the other hand. Specifically, a plurality of hot wire anemometers or laser anemometers may be arranged on the measuring device 30 to measure the surrounding aerosol flow velocity, obtain the flow velocity of the surrounding gas, and compare the flow velocity at different positions to obtain the wind direction, which together constitute the wind speed information. The measuring unit may also measure the wind speed by a traditional cup anemometer. In this case, the wind speed information only includes the size data of the wind speed, but not the wind direction data. Please refer to Figure 3 ,If the wind speed at high altitude is larger and the wind speed at low altitude is smaller, the ,measuring device 30 at high altitude will be blown further away from the ,far point.

[0037] Since the measuring device 30 will tilt to a certain extent when being blown, the measuring device 30 is also provided with a balancing unit. When the measuring device 30 tilts, the balancing unit will maintain the measuring unit in a horizontal state, so that the wind speed measured by the measuring unit is still the wind speed in the horizontal direction. For example, a gyroscope is used to measure the tilt angle. When the measuring device 30 tilts by 15 degrees, the motor of the balancing unit controls the measuring unit to rotate 15 degrees in the opposite direction to compensate for the tilt of the measuring device 30. Alternatively, a balancing unit with the center of gravity at the bottom is set in the measuring device 30. No matter how much the measuring device 30 tilts, the heavier balancing unit will be vertically downward due to the management of gravity, driving the measuring unit to maintain a horizontal measurement direction.

[0038] Since the measuring unit directly measures the flow rate of the measuring device 30 relative to the surrounding air, when the measuring device 30 is blown, the measured wind speed data will have errors due to the relative movement between the measuring device and the ground. And the wind speed information we need is the flow rate of the ground relative to the air. Optionally, in order to eliminate the error, the following two schemes are provided to eliminate the error so that the measurement is more accurate. One method is to calculate the movement speed of the measuring device 30 by the offset from the origin recorded in real time by the measuring unit, and compensate the wind speed information directly measured by the measuring unit. Another method is to add an acceleration measurement unit to the measuring device 30, and use the measured acceleration information to calculate the movement speed of the measuring device 30, so as to compensate the wind speed information. After compensating according to the movement speed of the measuring device 30, the error caused by the movement of the measuring device 30 can be eliminated, and the wind speed measurement system can also be fixed on a moving ship to measure the wind speed at different locations during navigation.

[0039] Furthermore, the system also includes a data recording device, and the wind speed information measured by the measuring device 30 can be transmitted to the data recording device by wired or wireless means. The data recording device is integrated with the fixing device 10, and can also be integrated with the power device 40. After the wind speed measurement system is set at a specified position and sufficient measurement information is collected, the lift of the power device 40 is reduced, the wind speed measurement system is recovered, and the measurement information is read from the data recording device. Specifically, if the measurement information is transmitted by wire, a cable can be set in the connecting device 20 so that the connecting device 20 has the function of data transmission and sends the measurement information to the data recording device or other terminals. The measurement information can also be transmitted wirelessly, and a wireless transceiver is installed on the measuring device 30, and the measurement information measured by the measuring device 30 is sent to the data recording device or other terminals via radio waves. If the distance between the measuring devices 30 is far and the radio wave signal strength is insufficient, a relay unit for receiving and forwarding the measurement information of other measuring devices can be set on the measuring device 30.

[0040] Preferably, the wind speed measurement system of the present application can perform anti-corrosion treatment on each device to avoid rapid aging and loss of accuracy of the system due to seawater corrosion, thereby extending the service life.

[0041] It can be seen that the wind speed measurement system provided in the present application can be arranged at a specified height through a power device 40, and can measure wind speed information at different heights through the coordinated cooperation of multiple measurement devices 30.

[0042] When the system is not installed, it takes up less space and is easy to transport. The connection between the connecting device 20 and other devices can be designed to be detachable, so that when installation is required, the number of measuring devices 30 and the length of the connecting device 20 can also be modularly assembled according to the needs of the specific project.

[0043] When the wind speed measurement system of the present application is not installed, it takes up less space and is lighter in weight, and does not require the construction of a base and a truss like a fixed wind tower. Taking a helium balloon as the power device 40 as an example, the wind speed measurement system is transported to a designated sea area by ship. During installation, it is only necessary to set the fixing device 10 in the sea and fill the helium balloon with gas, and the wind speed measurement system can be quickly deployed. During recovery, the helium balloon is controlled to gradually release gas to reduce lift, and the power device 40, the connecting device 20 and the measuring device 30 fall from the air, so that the wind speed measurement system can be quickly recovered from the sea surface for next use. In addition, the present system can also be used on land to measure wind speed, eliminating the cumbersome steps of building a truss.

[0044] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned embodiments and will not be repeated here.

[0045] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0046] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0047] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0048] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, read-only memory), random access memory (RAM, random access memory), disk or optical disk and other media that can store program code.

Claims

1. A wind speed measurement system, characterized in that: include: Fixing devices, connecting devices, measuring devices and power devices; The fixing device fixes the wind speed measurement system on other objects, and the fixing device is connected to the measurement device through the connecting device; The connecting device is used to connect the measuring device or the power device; The measuring device comprises a balancing unit and a measuring unit, wherein the measuring unit is used to measure the wind speed and record the position change of the measuring device, and the balancing unit is used to adjust the inclination angle of the measuring unit so that the measuring unit can measure the wind speed in the horizontal direction; The power device is used to provide an upward lift for the wind speed measurement system; the connecting device is hollow, and a gas with a relatively low density is filled in the connecting device, so that the connecting device and the power device jointly provide a lift for the wind speed measurement system, and when a crosswind passes through, the measurement device will be blown away from its original position; The measuring device further comprises an acceleration measuring unit for measuring the acceleration of the measuring device; When cross winds are present only at lower altitudes, the measuring device will be blown away from the origin; When there is an upward updraft, the measuring device is blown to a higher altitude than the power device; Arrange a plurality of hot wire anemometers or laser anemometers on the measuring device to measure the surrounding aerosol flow velocity, obtain the flow velocity of the surrounding gas, and compare the flow velocities at different positions to obtain the wind direction, which together constitute the wind speed information; The measuring device is also provided with a balancing unit, and when the measuring device has an inclination angle, the balancing unit will maintain the measuring unit in a horizontal state.

2. The wind speed measurement system according to claim 1, characterized in that: The connecting device is provided with a cable for transmitting measurement information.

3. The wind speed measurement system according to claim 1, characterized in that: The measuring device further comprises a sending unit for sending measurement information.

4. The wind speed measurement system according to claim 3, characterized in that: The sending unit sends the measurement information via radio waves; the measuring device further comprises a relay unit, which is used to receive and forward the measurement information of other measuring devices.

5. The wind speed measurement system according to any one of claims 1 to 4, characterized in that: The connection between the connecting device and other devices is detachable.

6. The wind speed measurement system according to any one of claims 1 to 4, characterized in that: The wind speed measurement system also includes a data recording device for recording measurement information.

7. The wind speed measurement system according to any one of claims 1 to 4, characterized in that: Each device of the wind speed measurement system has been treated with anti-corrosion.

8. The wind speed measurement system according to any one of claims 1 to 4, characterized in that: The measuring device is spherical.

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