CN113446166B - A device and method for measuring power characteristics of offshore wind turbines - Google Patents
A device and method for measuring power characteristics of offshore wind turbines Download PDFInfo
- Publication number
- CN113446166B CN113446166B CN202110681226.2A CN202110681226A CN113446166B CN 113446166 B CN113446166 B CN 113446166B CN 202110681226 A CN202110681226 A CN 202110681226A CN 113446166 B CN113446166 B CN 113446166B
- Authority
- CN
- China
- Prior art keywords
- wind
- wave
- data
- measuring equipment
- wind turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The invention belongs to the technical field of offshore wind turbines, and discloses a device for measuring power characteristics of an offshore wind turbine, which comprises wind measuring equipment, wave measuring equipment, current measuring equipment, a current transformer, a power transmitter, a data acquisition unit and a wireless communication module; the current transformer is arranged on the wind turbine generator, the current transformer is connected with the power transmitter, the wind measuring equipment, the wave measuring equipment, the flow measuring equipment and the power transmitter are respectively connected with the data acquisition unit, the wave measuring equipment and the flow measuring equipment are arranged in the surrounding area of the wind turbine generator foundation, and the data acquisition unit is communicated with the remote upper computer. The measuring method is characterized in that waves and currents are taken as factors influencing the power curve of the fan besides wind, and the power curve of the fan can be modeled more accurately, so that the distribution of the generating capacity optimizing unit of the wind turbine can be accurately estimated in a planning and designing stage, and the influence factors influencing the generating capacity of the fan can be accurately estimated in a production stage to optimize the operation control strategy of the fan.
Description
Technical Field
The invention belongs to the technical field of offshore wind turbines, and particularly discloses a device and a method for measuring power characteristics of an offshore wind turbine.
Background
The offshore environment is bad, the power generation performance of the wind turbine generator is influenced by factors such as waves and currents, and the control reliability and stability of the wind turbine generator can be influenced by different waves, current directions and strengths, so that the power characteristics of the wind turbine generator are influenced. The current method for testing the power characteristics of the offshore wind turbine still uses the testing method of the onshore wind turbine, and only wind is used as an evaluation factor affecting the power output characteristics of the wind turbine, so that the reliability of the type authentication of the offshore wind turbine is reduced. The method not only can make the offshore wind turbine often difficult to reach the optimal power curve, but also can make the control strategy of the wind turbine difficult to comprehensively optimize so as to improve the generating capacity of the wind turbine.
Disclosure of Invention
The invention aims to provide a device and a method for measuring power characteristics of an offshore wind turbine, and solves the problem that an optimal power curve of the offshore wind turbine cannot be obtained due to the fact that the offshore wind turbine is tested by a test method of an onshore wind turbine.
The invention is realized by the following technical scheme:
The device for measuring the power characteristics of the offshore wind turbine comprises wind measuring equipment, wave measuring equipment, current measuring equipment, a current transformer, a power transmitter, a data acquisition unit and a wireless communication module;
The current transformer is arranged on the wind turbine generator, is 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 flow measuring equipment are arranged in the surrounding area of the wind turbine foundation;
the data acquisition device is communicated with the remote upper computer through the wireless communication module.
Further, the anemometer device comprises a anemometer tower or a lidar.
Further, the flow measuring device comprises a Doppler wave profile flow meter or a buoy.
Furthermore, the surrounding area of the wind turbine generator base is an area formed by taking the wind turbine generator base as a circle center and the radial distance is 100-200 m.
Further, the measured data of the wind measuring equipment comprise meteorological data of the wind direction of the main wind from the height of the hub of the wind turbine 2D-4D, wherein the main wind direction is a sector with the maximum wind energy ratio and not more than 45 degrees selected based on a annual wind energy rose;
The wave measuring equipment measures wave data including wave data of the surrounding area of the wind turbine generator foundation;
the data measured by the flow measuring equipment comprise water flow data of the area around the wind turbine foundation.
Further, 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.
Further, the wind measuring equipment, the wave measuring equipment and the flow measuring equipment are all internally provided with GPS timing modules.
Further, the wind measuring device, the wave measuring device, the flow measuring device and the power transmitter are continuously collected at a sampling rate of 1HZ and above.
The invention also discloses a measuring method of the device for measuring the power characteristics of the offshore wind turbine, which comprises the following steps:
S1, acquiring data by using wind measuring equipment, wave measuring equipment and flow measuring equipment;
S2, eliminating meteorological data, wave data and water flow data of the wind generating set, wind measuring equipment, wave measuring equipment and current measuring equipment which are abnormally operated, and the wind direction is in a non-main wind direction time period;
S3, the offshore wind turbine should normalize wind speed according to air density, and the wind speed is converted into the same air density; after data standardization, weather data, wave data and water flow data are averaged to obtain a plurality of groups of wave directions and flow directions and wind speed and power data points matched with the wave directions and the flow directions;
S4, uniformly dividing the statistical average value of the wave direction and the flow direction into different sectors within the range of 0-360 degrees, taking the sector where the wave direction and the flow direction are located as a characteristic value, distributing a data sequence consisting of weather data, wave data and water flow data with the same moment to the different wave direction and flow direction sectors to form weather data, wave data and water flow data groups under the different wave direction and flow direction sectors, and respectively establishing a function model taking wind speed, wave height, period and flow speed as variables and power as dependent variables aiming at the different data groups to form a wind turbine generator power characteristic evaluation function group.
Compared with the prior art, the invention has the following beneficial technical effects:
The invention discloses a device for measuring power characteristics of an offshore wind turbine, which comprises wind measuring equipment, wave measuring equipment and flow measuring equipment, wherein weather data are acquired through the wind measuring equipment, wave data are acquired through the wave measuring equipment, water flow data are acquired through the flow measuring equipment, the wind measuring equipment, the wave measuring equipment and the flow measuring equipment are all connected with a data acquisition unit, the weather data, the wave data and the water flow data are sent to the data acquisition unit, and the data acquisition unit is sent to a remote upper computer through a communication module to provide a database for a background, so that subsequent analysis is facilitated. Because the wave and the current can influence the load of the offshore wind turbine, the method takes the wave and the current as factors influencing the power curve of the wind turbine besides wind, and can model the power curve of the wind turbine more accurately, so that the distribution machine of the generating capacity optimizing machine of the wind turbine can be accurately estimated in the planning and design stage, and the influencing factors influencing the generating capacity of the wind turbine can be accurately estimated in the production stage to optimize the operation control strategy of the wind turbine.
The invention also discloses a measuring method based on the device for measuring the power characteristics of the offshore wind turbine, which is used for analyzing and calculating the acquired meteorological data, wave data and water flow data to form a wind turbine power characteristic evaluation function set, wherein the function set can be used for evaluating the generated energy of the offshore wind turbine, is beneficial to a owner to grasp the generating benefits of the offshore wind turbine to be developed and the power characteristics of the running wind turbine more accurately, lays a foundation for the microscopic site selection optimization of the offshore wind turbine and the operation optimization of the offshore wind turbine, and is beneficial to improving the power characteristics of the offshore wind turbine and optimizing the microscopic site selection of the offshore wind turbine.
Drawings
FIG. 1 is a schematic diagram of a device for measuring power characteristics of an offshore wind turbine.
Wherein, 1 is current transformer, 2 is power transmitter, 3 is survey unrestrained equipment, 4 is current measurement equipment, 5 is wind measurement equipment, 6 is wireless communication module, 7 is data collection station.
Detailed Description
The invention will now be described in further detail with reference to specific examples, which are intended to illustrate, but not to limit, the invention.
As shown in fig. 1, the invention discloses a device for measuring power characteristics of an offshore wind turbine, which comprises 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 current transformer 1 is arranged on a wind turbine generator, 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 collector 7, the data collector 7 is connected with the wireless communication module 6, and the wireless communication module 6 sends out data of the data collector 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 device 5 is mounted on a platform, a periphery or a cabin shell of the wind turbine generator set according to the type of the device, the wind measuring device 5 comprises a wind measuring tower and a laser radar, the wave measuring device 3 comprises an acoustic Doppler wave meter and the flow measuring device 4 comprises a Doppler wave profile flow meter.
Specifically, the wind turbine generator comprises a generator and a converter, the generator and the converter are connected 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 anemometer 5 is mounted on the platform, the surrounding or the nacelle housing of the wind turbine, the specific mounting location being device type dependent.
The data measured by the wind measuring equipment 5 should comprise meteorological data of the main wind direction up to the position of the wind direction away from the hub height of the wind turbine 2D-4D, and mainly comprises wind speed, wind direction, temperature and humidity and air pressure;
The wave measuring device 3 is used for measuring the wave data of different sections of 100-200 meters around the wind turbine foundation, the wave data comprise wave height, wave direction and period, and the flow measuring device 4 is used for measuring the water flow data of different sections of 100-200 meters around the wind turbine foundation, wherein the water flow data comprise flow velocity and flow direction.
The time synchronization of each measuring device is kept through the GPS timing module, and the maximum time difference of the data acquisition synchronization of different devices is smaller than 1% of the average time.
More preferably, the sampling rate is too low to accurately reflect the changes in wind, wave, and current, so 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 of 1HZ and above.
The main wind direction is a sector with the maximum wind energy ratio and not more than 45 degrees selected based on the annual wind energy rose.
The power characteristic evaluation procedure 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, wave and water flow data of the wind generating set and each measuring device which are abnormally operated and the wind direction in the non-main wind direction time period should be removed, and the data are not destroyed.
It should be ensured that only the data collected under normal operation of the wind park is used for analysis and that the data is not destroyed, the data set should be removed from the database in the following cases:
a) The other external conditions except the wind speed exceed the operation range of the wind generating set;
b) The wind generating set is stopped due to the failure of the wind generating set;
c) Manually stopping during testing or maintenance operation;
d) A measurement instrument malfunction or degradation;
e) Wind direction is data that is not in the main wind direction.
(3) The offshore wind turbine should normalize wind speed according to air density, and convert wind speed to the same air density.
After data normalization, meteorological data, wave data and water flow data are averaged by an interval method (for example, 10 minutes) to obtain a plurality of groups of wave directions and flow directions and wind speed and power data points matched with the wave directions and the flow directions.
(4) Uniformly dividing the statistical average value of wave direction and flow direction into different sectors within the range of 0-360 degrees, taking the sector where the wave direction and the flow direction are located as characteristic values, distributing a data sequence consisting of weather data, wave data and water flow data with the same moment into the different wave direction and flow direction sectors to form weather data, wave data and water flow data groups under the different wave direction and flow direction sectors, wherein if the wave direction and the flow direction sectors are divided into 4 sectors, for example, the angles of the sectors are respectively 0-90 degrees, 90-180 degrees, 180-270 degrees and 270-360 degrees, and establishing a function model taking wind speed, wave height, period and flow speed as variables and power as dependent variables aiming at the different data groups to form a wind turbine generator power characteristic evaluation function group.
The function set can be used for evaluating the power generation capacity of the offshore wind turbine, is beneficial to owners to more accurately grasp the power generation benefits of the offshore wind turbine to be developed and the power characteristics of the running wind turbine, and lays a foundation for microscopic site selection optimization of the offshore wind turbine and running optimization of the offshore wind turbine.
Claims (3)
1. The measuring method of the device for measuring the power characteristics of the offshore wind turbine generator is characterized in that the device comprises 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 current transformer (1) is arranged on the wind turbine generator, the current transformer (1) is connected with the power transmitter (2), and 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 collector (7);
the wave measuring device (3) and the current measuring device (4) are arranged in the surrounding area of the wind turbine foundation;
The data collector (7) is communicated with a remote upper computer through a wireless communication module (6);
the wind measuring equipment (5) comprises a wind measuring tower or a laser radar;
the flow measuring device (4) comprises a Doppler wave profile flow rate meter or a buoy;
the surrounding area of the wind turbine generator base is an area formed by taking the wind turbine generator base as a circle center and the radial distance is 100m-200 m;
The data measured by the wind measuring equipment (5) comprise meteorological data of the main wind direction up to the position of the wind direction from the hub height of the wind turbine generator set 2D-4D, wherein the main wind direction is a sector with the maximum wind energy occupation ratio and not more than 45 degrees selected based on a annual wind energy rose;
the wave measuring equipment (3) measures wave data of the surrounding area of the wind turbine generator foundation;
The data measured by the flow measuring equipment (4) comprise water flow data of the area around the wind turbine foundation;
the meteorological data comprise wind speed, wind direction, temperature, humidity and air pressure, the wave data comprise wave height, wave direction and wave period, and the water flow data comprise water flow velocity and water flow direction;
The measuring method comprises the following steps:
s1, acquiring data by using wind measuring equipment (5), wave measuring equipment (3) and flow measuring equipment (4);
s2, eliminating meteorological data, wave data and water flow data of a wind generating set, wind measuring equipment (5), wave measuring equipment (3) and current measuring equipment (4) in an abnormal operation mode and a wind direction in a non-main wind direction time period;
S3, the offshore wind turbine should normalize wind speed according to air density, and the wind speed is converted into the same air density; after data standardization, weather data, wave data and water flow data are averaged to obtain a plurality of groups of wave directions and flow directions and wind speed and power data points matched with the wave directions and the flow directions;
S4, uniformly dividing the statistical average value of the wave direction and the flow direction into different sectors within the range of 0-360 degrees, taking the sector where the wave direction and the flow direction are located as a characteristic value, distributing a data sequence consisting of weather data, wave data and water flow data with the same moment into the different wave direction and flow direction sectors to form weather data, wave data and water flow data groups under the different wave direction and flow direction sectors, and respectively establishing a function model taking wind speed, wave height, period and flow speed as variables and power as dependent variables aiming at the different data groups to form a wind turbine generator power characteristic evaluation function group.
2. The measuring method according to claim 1, wherein the wind measuring device (5), the wave measuring device (3) and the flow measuring device (4) are respectively provided with a GPS timing module.
3. The measurement method according to claim 1, characterized in that the wind measuring device (5), the wave measuring device (3), the flow measuring device (4) and the power transmitter (2) are continuously acquired at a sampling rate of 1Hz and above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681226.2A CN113446166B (en) | 2021-06-18 | 2021-06-18 | A device and method for measuring power characteristics of offshore wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110681226.2A CN113446166B (en) | 2021-06-18 | 2021-06-18 | A device and method for measuring power characteristics of offshore wind turbines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113446166A CN113446166A (en) | 2021-09-28 |
| CN113446166B true CN113446166B (en) | 2024-12-24 |
Family
ID=77811999
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110681226.2A Active CN113446166B (en) | 2021-06-18 | 2021-06-18 | A device and method for measuring power characteristics of offshore wind turbines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113446166B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214836884U (en) * | 2021-06-18 | 2021-11-23 | 中国华能集团清洁能源技术研究院有限公司 | Device for measuring power characteristics of offshore wind turbine generator system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102797617A (en) * | 2012-08-14 | 2012-11-28 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wind power and ocean wave energy combined generating set |
| CN106815456A (en) * | 2015-12-02 | 2017-06-09 | 中国电力科学研究院 | A kind of Wind turbines power characteristic evaluation method |
| CN108414002A (en) * | 2017-12-19 | 2018-08-17 | 中国电力科学研究院有限公司 | A kind of environmental parameter test device of offshore wind farm unit |
-
2021
- 2021-06-18 CN CN202110681226.2A patent/CN113446166B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN214836884U (en) * | 2021-06-18 | 2021-11-23 | 中国华能集团清洁能源技术研究院有限公司 | Device for measuring power characteristics of offshore wind turbine generator system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113446166A (en) | 2021-09-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10371124B2 (en) | System and method for determining wind farm wake loss | |
| US7895018B2 (en) | Event monitoring via combination of signals | |
| CN101684774B (en) | Wind power generation system and wind measuring method of wind power generator | |
| CN202974425U (en) | Wind turbine generator noise testing system | |
| CN104091209B (en) | Wind turbines power characteristic appraisal procedure based on BP neural network | |
| CN106873359B (en) | A wind power noise evaluation method based on cluster analysis and neural network | |
| CN106815456A (en) | A kind of Wind turbines power characteristic evaluation method | |
| Pettas et al. | On the effects of inter-farm interactions at the offshore wind farm Alpha Ventus | |
| EP3406897A1 (en) | System and method for determining wind farm wake loss | |
| CN109118057A (en) | A kind of Wind turbines power output evaluation method based on realtime power curve | |
| US6993965B2 (en) | Horizontal axis wind turbine and method for measuring upflow angle | |
| CN113807693B (en) | A method for evaluating the optimization effect of wind turbine power generation based on airborne radar | |
| CN205013202U (en) | Wind turbine generator system power curve test system | |
| US20230025161A1 (en) | A method for planning repowering of a wind energy plant | |
| CN119740828B (en) | Wind farm fan point location selection method and related device | |
| CN214836884U (en) | Device for measuring power characteristics of offshore wind turbine generator system | |
| CN113446166B (en) | A device and method for measuring power characteristics of offshore wind turbines | |
| CN113250915B (en) | Offshore wind turbine load testing device and method | |
| CN201852702U (en) | A wind turbine load test system in compliance with IEC61400-13 standard | |
| CN115523085A (en) | Yaw correction method for wind turbine generator | |
| Bortolotti et al. | Upwind vs downwind: Loads and acoustics of a 1.5 MW wind turbine | |
| Wang et al. | Application of Lidar in Comparison of Wind Speed and Wind Direction Meters in Wind Power Field | |
| Chen et al. | Wind Turbine Performance Analysis of An Offshore Wind Farm in China | |
| Celeska et al. | 142. EQUIVALENT WIND FARM POWER CURVE ESTIMATION | |
| CN217879266U (en) | On-site detection device for fan airborne anemometer of wind power plant |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |