CN214836884U - Device for measuring power characteristics of offshore wind turbine generator system - Google Patents
Device for measuring power characteristics of offshore wind turbine generator system Download PDFInfo
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- CN214836884U CN214836884U CN202121361631.8U CN202121361631U CN214836884U CN 214836884 U CN214836884 U CN 214836884U CN 202121361631 U CN202121361631 U CN 202121361631U CN 214836884 U CN214836884 U CN 214836884U
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Abstract
The utility model belongs to the technical field of offshore wind turbines, and discloses a device for measuring the power characteristics of an offshore wind turbine, which comprises a wind measuring device, a wave measuring device, a current transformer, a power transmitter, a data collector and a wireless communication module; the current transformer is installed on the wind turbine generator and connected with the power transmitter, and the wind measuring equipment, the wave measuring equipment, the current measuring equipment and the power transmitter are respectively connected with the data acquisition unit; the wave measuring equipment and the current measuring equipment are arranged in the area around the wind turbine foundation; and the data acquisition unit is communicated with a remote upper computer. Besides wind, waves and currents are used as factors influencing the power curve of the fan, and the power curve of the fan can be modeled more accurately, so that the generated energy of the wind turbine generator can be accurately evaluated in a planning and designing stage, the generator set distribution machine of the wind turbine generator can be optimized, and the influence factors influencing the generated energy of the fan can be accurately evaluated in a production stage, and the operation control strategy of the fan can be optimized.
Description
Technical Field
The utility model belongs to the technical field of offshore wind turbine generator system, a device for offshore wind turbine generator system power characteristic is measured is specifically disclosed.
Background
The offshore environment is severe, the power generation performance of the wind turbine is influenced by factors such as waves and currents besides wind, and the control reliability and stability of the wind turbine are influenced by different wave and current directions and strengths, so that the power characteristics of the wind turbine are influenced. At present, the test method of the power characteristics of the offshore wind turbine is still continued to the test method of the onshore wind turbine, and only wind is taken as an evaluation factor influencing the power output characteristics of the wind turbine, so that the reliability of the type certification of the offshore wind turbine is reduced. By the method, the offshore wind turbine generator is often difficult to reach an optimal power curve, and the control strategy of the wind turbine generator is difficult to be comprehensively optimized to improve the generating capacity of the wind turbine generator.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a be used for offshore wind turbine generator system power characteristic measuring device, solved the offshore wind turbine generator system of test method test of using continental wind turbine generator system, lead to the unable problem that obtains offshore wind turbine generator system optimum power curve.
The utility model discloses a realize through following technical scheme:
a device for measuring power characteristics of an offshore wind turbine generator system comprises wind measuring equipment, wave measuring equipment, current measuring equipment, a current transformer, a power transmitter, a data collector and a wireless communication module;
the current transformer is installed on the wind turbine generator and connected with the power transmitter, and the wind measuring equipment, the wave measuring equipment, the current measuring equipment and the power transmitter are respectively connected with the data acquisition unit;
the wave measuring equipment and the current measuring equipment are arranged in the area around the wind turbine foundation;
the data acquisition unit is communicated with a remote upper computer through a wireless communication module.
Further, the wind measuring equipment comprises a wind measuring tower or a lidar.
Further, the flow measuring device comprises a doppler wave profile velocimeter or a buoy.
Further, the area around the wind turbine generator base is: and an area formed by taking the wind turbine generator as the center of a circle and having a radial distance of 100-200 m.
Further, the data measured by the wind measuring equipment comprise meteorological data at the height position of the wind turbine hub from the wind turbine generator to the wind turbine generator in the 2D-4D direction in the main wind direction; the main wind direction is a sector with the largest wind energy ratio not exceeding 45 degrees, which is selected based on a annual wind energy rose diagram;
the data measured by the wave measuring equipment comprises wave data of an area around the wind turbine generator base;
the data measured by the current measuring equipment comprise water flow data of the area around the wind turbine generator base.
Further, meteorological data includes wind speed, wind direction, humiture and atmospheric pressure, and wave data includes wave height, wave direction and wave cycle, and rivers data includes rivers velocity of flow and rivers flow direction.
Furthermore, the wind measuring equipment, the wave measuring equipment and the current measuring equipment are all internally provided with GPS timing modules.
Furthermore, the wind measuring equipment, the wave measuring equipment, the flow measuring equipment and the power transmitter continuously collect the wind measuring equipment, the wave measuring equipment, the flow measuring equipment and the power transmitter at a sampling rate of more than 1 HZ.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model discloses a be used for offshore wind turbine power characteristic measuring device, including the anemometry equipment, survey unrestrained equipment and current surveying equipment, acquire meteorological data through the anemometry equipment, acquire wave data through surveying unrestrained equipment, acquire water flow data through current surveying equipment, the anemometry equipment, survey unrestrained equipment and current surveying equipment and all connect with data collection station, with meteorological data, wave data and water flow data transmission for data collection station, data collection station sends to long-range host computer through communication module again, provides the database for the backstage, the subsequent analysis of being convenient for. Because the waves and the currents can influence the load of the offshore wind turbine, the method can take the waves and the currents as factors influencing the power curve of the wind turbine besides wind, and can more accurately model the power curve of the wind turbine, thereby accurately evaluating the generated energy of the wind turbine in a planning and designing stage, optimizing a turbine of the wind turbine, and accurately evaluating the influencing factors influencing the generated energy of the wind turbine in a production stage to optimize a fan operation control strategy.
Drawings
Fig. 1 is a schematic structural diagram of a device for measuring power characteristics of an offshore wind turbine generator system according to the present invention.
The device comprises a current transformer 1, a power transmitter 2, a wave measuring device 3, a current measuring device 4, a wind measuring device 5, a wireless communication module 6 and a data acquisition unit 7.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
As shown in fig. 1, the utility model discloses a device for offshore wind turbine generator system power characteristics measures, including anemometry equipment 5, survey unrestrained equipment 3, current surveying equipment 4, current transformer 1, power transmitter 2, data collection station 7 and wireless communication module 6. The current transformer 1 is installed on the wind turbine generator system, the current transformer 1 is connected with the power transmitter 2, the wind measuring equipment 5, the wave measuring equipment 3, the current measuring equipment 4 and the power transmitter 2 are respectively connected with the data acquisition unit 7, the data acquisition unit 7 is connected with the wireless communication module 6, and the wireless communication module 6 sends out data of the data acquisition unit 7 in a wireless transmission mode.
Specifically, the current transformer 1 is installed on a cable between a generator and a converter of the wind turbine generator, one end of the current transformer 1 is connected with the cable, and the other end of the current transformer 1 is connected with the power transmitter 2.
The wind measuring equipment 5 is installed on a platform, the periphery or a cabin shell of the wind turbine generator and depends on the equipment type, the wind measuring equipment 5 comprises but is not limited to a wind measuring tower and a laser radar, the wave measuring equipment 3 comprises but is not limited to an acoustic Doppler wave meter, and the flow measuring equipment 4 comprises but is not limited to a Doppler wave profile current meter.
Specifically, the wind turbine generator comprises a generator and a converter, the generator is connected with the converter through a cable, one end of a current transformer 1 is connected with the cable, and the other end of the current transformer is connected with a power transmitter 2.
The wind measuring equipment 5 is installed on a platform, the periphery or a cabin shell of the wind turbine generator, and the specific installation position depends on the type of the equipment.
The data measured by the wind measuring equipment 5 comprise meteorological data at the height position from the wind turbine generator hub to the wind turbine generator hub from 2D to 4D in the upwind direction of the main wind, and mainly comprise wind speed, wind direction, temperature, humidity and air pressure;
the data measured by the wave measuring equipment 3 comprises wave data at different sections of 100-200 meters around the wind turbine foundation, wherein the wave data comprises wave height, wave direction and period; the current measuring equipment 4 should contain water flow data of different sections of 100-200 meters around the wind turbine foundation, and the water flow data includes flow velocity and flow direction.
The time synchronization of each measuring device is kept through a GPS time correction module, and the maximum time difference of the data acquisition synchronization of different devices is smaller than 1% of the average time.
Preferably, the sampling rate is too low to accurately reflect the changes of wind, wave and flow, so that the wind measuring device 5, the wave measuring device 3, the flow measuring device 4 and the power transmitter 2 continuously collect at the sampling rate of 1HZ and above.
The main wind direction is a sector with the largest wind energy ratio not exceeding 45 degrees selected based on the annual wind energy rose diagram.
The power characteristic evaluation process is as follows:
(1) the wind measuring equipment 5, the wave measuring equipment 3 and the flow measuring equipment 4 are arranged and set according to the requirements, and the data acquisition period of each equipment is at least 1 whole year.
(2) The meteorological data, wave data and water flow data of the wind generating set and various measuring devices which are abnormally operated and wind directions in a non-main wind direction time period are rejected, and the data are not damaged.
It should be ensured that only data collected during normal operation of the wind turbine are used for analysis and that the data are not corrupted, the data sets in the following cases should be removed from the database:
a) other external conditions except the wind speed exceed the operation range of the wind generating set;
b) the wind generating set stops due to the fault of the wind generating set;
c) manual shutdown during testing or maintenance operations;
d) a faulty or degraded measurement instrument;
e) and the wind direction is not in the main wind direction.
(3) The wind speed of the offshore wind turbine is standardized according to the air density, and the wind speed is converted to be under the same air density. After data normalization, the meteorological data, wave data and current data are averaged by the "interval method" (e.g. 10 minutes) to obtain several sets of wave direction, flow direction and wind speed and power data points matching with the wave direction and flow direction.
(4) Uniformly dividing the statistical average value of wave direction and flow direction into different sectors within the range of 0-360 degrees, and distributing data sequences consisting of meteorological data, wave data and water flow data at the same moment to different wave direction and flow direction sectors by taking the sector where the wave direction and the flow direction are located as characteristic values to form meteorological data, wave data and water flow data groups under different wave direction and flow direction sectors (for example, if the data sequences are divided according to 4 sectors, the sector angles are 0-90 degrees, 90-180 degrees, 180-270 degrees and 270-360 degrees), and respectively establishing function models with wind speed, wave height, period and flow speed as variables and power as a dependent variable aiming at different data groups to form a power characteristic evaluation function group of the wind turbine.
The function group can be used for evaluating the generating capacity of the offshore wind turbine, is beneficial to an owner to more accurately master the generating income of the offshore wind turbine to be developed and the power characteristic of the operating wind turbine, and lays a foundation for the micro site selection optimization of the offshore wind turbine and the operation optimization of the offshore wind turbine.
Claims (8)
1. A device for measuring power characteristics of an offshore wind turbine generator system is characterized by comprising wind measuring equipment (5), wave measuring equipment (3), current measuring equipment (4), a current transformer (1), a power transmitter (2), a data collector (7) and a wireless communication module (6);
the wind power generation system is characterized in that a current transformer (1) is installed on a wind turbine generator, the current transformer (1) is connected with a power transmitter (2), and a wind measuring device (5), a wave measuring device (3), a current measuring device (4) and the power transmitter (2) are respectively connected with a data acquisition unit (7);
the wave measuring equipment (3) and the current measuring equipment (4) are arranged in the surrounding area of the wind turbine generator base;
the data acquisition unit (7) is communicated with a remote upper computer through a wireless communication module (6).
2. An arrangement for offshore wind turbine power characteristic measurement according to claim 1, characterized in that the wind measuring equipment (5) comprises a wind tower or a lidar.
3. An arrangement for offshore wind turbine power characteristic measurement according to claim 1, characterized in that the flow measuring device (4) comprises a doppler wave profile velocimeter or a buoy.
4. The device for measuring the power characteristics of the offshore wind turbine generator according to claim 1, wherein the area around the wind turbine generator base is: and an area formed by taking the wind turbine generator as the center of a circle and having a radial distance of 100-200 m.
5. The device for measuring the power characteristics of the offshore wind turbine generator according to claim 4, wherein the data measured by the wind measuring equipment (5) comprises meteorological data at the height from the wind turbine generator hub to the wind turbine generator hub from 2D to 4D in the upwind direction of the main wind; the main wind direction is a sector with the largest wind energy ratio not exceeding 45 degrees, which is selected based on a annual wind energy rose diagram;
the data measured by the wave measuring equipment (3) comprise wave data of the area around the wind turbine generator base;
the data measured by the current measuring equipment (4) comprise water flow data of the area around the wind turbine generator base.
6. The device of claim 5, wherein the meteorological data comprises wind speed, wind direction, temperature, humidity and air pressure, the wave data comprises wave height, wave direction and wave period, and the water flow data comprises water flow speed and water flow direction.
7. The device for measuring the power characteristics of the offshore wind turbine generator system according to claim 1, wherein the wind measuring equipment (5), the wave measuring equipment (3) and the current measuring equipment (4) are all internally provided with GPS timing modules.
8. An arrangement for offshore wind turbine power characteristic measurement according to claim 1, characterized in that the wind measuring device (5), the wave measuring device (3), the current measuring device (4) and the power transmitter (2) are continuously collecting at a sampling rate above 1 HZ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121361631.8U CN214836884U (en) | 2021-06-18 | 2021-06-18 | Device for measuring power characteristics of offshore wind turbine generator system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121361631.8U CN214836884U (en) | 2021-06-18 | 2021-06-18 | Device for measuring power characteristics of offshore wind turbine generator system |
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| Publication Number | Publication Date |
|---|---|
| CN214836884U true CN214836884U (en) | 2021-11-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121361631.8U Active CN214836884U (en) | 2021-06-18 | 2021-06-18 | Device for measuring power characteristics of offshore wind turbine generator system |
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| CN (1) | CN214836884U (en) |
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2021
- 2021-06-18 CN CN202121361631.8U patent/CN214836884U/en active Active
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