CN114412724B - Laser radar ranging system for monitoring running state of wind power blade - Google Patents
Laser radar ranging system for monitoring running state of wind power blade Download PDFInfo
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- CN114412724B CN114412724B CN202111667490.7A CN202111667490A CN114412724B CN 114412724 B CN114412724 B CN 114412724B CN 202111667490 A CN202111667490 A CN 202111667490A CN 114412724 B CN114412724 B CN 114412724B
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- laser radar
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- blade
- turbine generator
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 claims description 23
- 239000000523 sample Substances 0.000 claims description 22
- 230000001360 synchronised effect Effects 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 3
- 239000013307 optical fiber Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
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- 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)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
The invention discloses a laser radar ranging system for monitoring the running state of a wind power blade, which comprises the following components: a spindle angle sensor; the laser radar ranging device is arranged at the top of the case of the wind turbine generator; a wind speed sensor; a data acquisition instrument; the wind turbine generator system comprises a wind turbine generator system computer, a data acquisition instrument and a laser radar ranging device, wherein the wind turbine generator system computer is arranged in a machine box of a wind turbine generator system, the data acquisition instrument transmits acquired signals to a wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar ranging device to work; and the wind power plant monitoring center. The invention relates to the technical field of wind power detection, in particular to a laser radar ranging system for monitoring the running state of a wind power blade, which can measure the swing amplitude of each part of the blade, judge whether the amplitude is in the normal amplitude range under the current wind speed or not, finally realize the effective monitoring of the blade and timely treat the found problems.
Description
Technical Field
The invention relates to the technical field of wind power detection, in particular to a laser radar ranging system for monitoring the running state of a wind power blade.
Background
Wind energy is a clean renewable energy source, people pay more attention to development and utilization of the wind energy, the development and utilization of the wind energy are mainly achieved through wind power generation, the wind power generation is a process of converting kinetic energy of wind into electric energy, and the basic principle is that wind power is utilized to drive blades to rotate, and an electric generator is driven to generate electricity through electromagnetic induction. The wind power blade is an important part of the wind power generator set, and in the design of the wind power blade, the wind power blade is generally required to meet the service life of 20 years. However, in actual field operation, the running characteristic of the wind turbine generator under the action of unsteady load causes the wind turbine generator to be easily damaged, and the reliability and the service life of the safe operation of the wind turbine generator are seriously affected. Once the blade is damaged locally, the damage to the whole blade can be possibly expanded, if the whole blade is not processed in time, and even the safety of the whole unit is affected. On the contrary, if tiny damage occurs to the part of the blade, the damaged part can be found out in time and treated in time, so that the replacement of the whole blade can be avoided, and the loss possibly caused to the unit can be effectively avoided.
The existing wind turbine generator blade detection technology generally adopts various sensors embedded in the blade for detection, the detection technology needs to modify the blade, and the sensors are installed on the blade, and belongs to the contact detection technology. The application of these contact detection techniques is greatly limited because the blades are in high speed motion during operation.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides the laser radar ranging system for monitoring the running state of the wind power blade, which realizes indirect blade monitoring without modifying the blade and damaging the blade structure.
(II) technical scheme
In order to achieve the above purpose, the invention is realized by the following technical scheme: a lidar ranging system for monitoring an operational state of a wind turbine blade, comprising:
The main shaft angle sensor is arranged on the main shaft of the wind power blade;
the laser radar ranging device is arranged at the top of the case of the wind turbine generator;
the wind speed sensor is arranged at one side of the case of the wind turbine generator;
The data acquisition instrument is arranged in the case of the wind turbine generator, and the main shaft angle sensor, the laser radar ranging device and the wind speed sensor are connected with the data acquisition instrument;
The wind turbine generator system comprises a wind turbine generator system computer, a data acquisition instrument and a laser radar ranging device, wherein the wind turbine generator system computer is arranged in a machine box of a wind turbine generator system, the data acquisition instrument transmits acquired signals to a wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar ranging device to work;
The wind power plant monitoring center acquires monitoring results processed in the wind turbine computer through the data transmission equipment, and the wind power plant monitoring center controls the wind turbine computer through the data transmission equipment.
Preferably, the laser radar ranging device is used for measuring the distances from the laser radar ranging probe to different positions of the blade under different angles.
Preferably, the maximum distance measured by the laser radar ranging device is 50-120cm away from the blade tip when the wind power blade is in a vertical state under no wind ring energy.
Preferably, the minimum distance measured by the laser radar ranging device is the distance from the blade when the laser radar ranging probe is in the horizontal position.
Preferably, the laser radar ranging device comprises a fixing frame, a first rotating shaft and a second rotating shaft are sequentially connected to the two sides of the top of the fixing frame in a rotating mode, a laser radar ranging probe is fixed between the first rotating shaft and the second rotating shaft, one end of the first rotating shaft is fixedly connected with a first synchronous wheel, the bottom of the fixing frame is fixedly connected with a motor and a controller, the output shaft end of the motor is fixedly connected with a second synchronous wheel, a synchronous belt is connected between the first synchronous wheel and the second synchronous wheel in a transmission mode, an installation frame is fixedly connected to the top of one side of the fixing frame, an angle sensor is fixedly connected to one end of the installation frame, and the detection end of the angle sensor is fixedly connected with one end of the second rotating shaft.
Preferably, the motor is a servo motor.
Preferably, the controller is used for controlling the motor and the laser radar ranging probe, and the laser radar ranging probe and the angle sensor transmit measurement data to the wind turbine computer through the controller.
Preferably, the transmission mode of the data transmission device includes satellite transmission, mobile network transmission and optical fiber transmission.
Preferably, the wind turbine generator system computer is internally provided with blade deformation under different wind speeds, and the wind turbine generator system computer measures the deformation of the blade according to the laser radar ranging device.
(III) beneficial effects
The invention provides a laser radar ranging system for monitoring the running state of a wind power blade. The beneficial effects are as follows:
This kind of a laser radar ranging system for monitoring wind-powered electricity generation blade running state through the laser radar ranging device that sets up at wind turbine generator system's quick-witted case top, can measure the distance between blade one side to the laser radar ranging device to can obtain the swing range of blade, and through the rotation of laser radar ranging probe certain angle, can measure the swing range of each position of blade, judge again whether this range is in the normal range under current wind speed, finally realize the effective monitoring to the blade, discovery problem can in time be handled.
Drawings
FIG. 1 is a diagram of a lidar ranging system of the present invention;
FIG. 2 is a front view of a lidar ranging apparatus of the present invention;
FIG. 3 is a side view of a lidar ranging device of the present invention;
Fig. 4 is a schematic diagram of a measuring range of the laser radar ranging device according to the present invention.
In the figure: the device comprises a 1-fixing frame, a 2-first rotating shaft, a 3-second rotating shaft, a 4-laser radar ranging probe, a 5-first synchronous wheel, a 6-motor, a 7-second synchronous wheel, an 8-synchronous belt, a 9-controller, a 10-mounting frame and an 11-angle sensor.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: a lidar ranging system for monitoring an operational state of a wind turbine blade, comprising:
The main shaft angle sensor is arranged on the main shaft of the wind power blade, and the state of the blade can be known through the main shaft angle sensor, so that the distance measurement can be conveniently carried out by using the laser radar distance measuring device;
the laser radar ranging device is arranged at the top of the case of the wind turbine generator;
the wind speed sensor is arranged at one side of the case of the wind turbine generator;
The data acquisition instrument is arranged in the case of the wind turbine generator, and the main shaft angle sensor, the laser radar ranging device and the wind speed sensor are connected with the data acquisition instrument;
The wind turbine generator system comprises a wind turbine generator system computer, a data acquisition instrument and a laser radar ranging device, wherein the wind turbine generator system computer is arranged in a machine box of a wind turbine generator system, the data acquisition instrument transmits acquired signals to a wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar ranging device to work;
The wind power plant monitoring center acquires monitoring results processed in the wind turbine computer through the data transmission equipment, and the wind power plant monitoring center controls the wind turbine computer through the data transmission equipment.
The laser radar ranging device is used for measuring distances from the laser radar ranging probe to different positions of the blade under different angles.
The transmission mode of the data transmission equipment comprises satellite transmission, mobile network transmission and optical fiber transmission.
Blade deformation amounts under different wind speeds are arranged in the wind turbine computer, and the wind turbine computer measures the deformation amounts of the blades according to the laser radar ranging device.
The maximum distance measured by the laser radar ranging device is that the wind power blade is in a position 50-120cm away from the blade tip in a vertical state under no wind ring energy, the maximum distance is controlled by the rotation angle of the laser radar ranging probe 4, the position a in fig. 4 is the maximum position, and the minimum distance measured by the laser radar ranging device is the distance from the blade when the laser radar ranging probe is in a horizontal position, and the position f in fig. 4 is the minimum distance.
Assuming that a micro crack occurs in the c point in fig. 4, the laser radar ranging probe 4 detects that the swing amplitude of the b point is too large, then other positions of the blade are monitored, the laser radar ranging probe 4 rotates a certain angle, the swing amplitude of the d point is detected to be normal, namely, the existence of the crack between the b point and the d point can be judged, the laser radar ranging probe 4 continues to rotate for measurement, the range of the crack can be further narrowed, and the later maintenance is facilitated.
The laser radar ranging device comprises a fixing frame 1, wherein a first rotating shaft 2 and a second rotating shaft 3 are sequentially connected to the two sides of the top of the fixing frame 1 in a rotating mode, a laser radar ranging probe 4 is fixed between the first rotating shaft 2 and the second rotating shaft 3, one end of the first rotating shaft 2 is fixedly connected with a first synchronous wheel 5, the bottom of the fixing frame 1 is fixedly connected with a motor 6 and a controller 9, the output shaft end of the motor 6 is fixedly connected with a second synchronous wheel 7, a synchronous belt 8 is connected between the first synchronous wheel 5 and the second synchronous wheel 7 in a transmission mode, a mounting frame 10 is fixedly connected to the top of one side of the fixing frame 1, an angle sensor 11 is fixedly connected to one end of the mounting frame 10, and the detection end of the angle sensor 11 is fixedly connected with one end of the second rotating shaft 3.
The motor 6 adopts a servo motor, the servo motor is more beneficial to controlling the angle of the laser radar ranging probe 4, and the rotation of the motor 6 is controlled by the controller 9.
The controller 9 is used for controlling the motor 6 and the laser radar ranging probe 4, and the laser radar ranging probe 4 and the angle sensor 11 transmit measurement data to a wind turbine computer through the controller 9.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A laser radar ranging system for monitoring wind-powered electricity generation blade running state, its characterized in that: comprising the following steps:
The main shaft angle sensor is arranged on the main shaft of the wind power blade;
the laser radar ranging device is arranged at the top of the case of the wind turbine generator;
the wind speed sensor is arranged at one side of the case of the wind turbine generator;
The data acquisition instrument is arranged in the case of the wind turbine generator, and the main shaft angle sensor, the laser radar ranging device and the wind speed sensor are connected with the data acquisition instrument;
The wind turbine generator system comprises a wind turbine generator system computer, a data acquisition instrument and a laser radar ranging device, wherein the wind turbine generator system computer is arranged in a machine box of a wind turbine generator system, the data acquisition instrument transmits acquired signals to a wind turbine generator system monitoring computer, and the wind turbine generator system computer controls the laser radar ranging device to work;
the wind power plant monitoring center acquires monitoring results processed in the wind turbine computer through data transmission equipment, and controls the wind turbine computer through the data transmission equipment;
Blade swing amplitudes under different wind speeds are arranged in the wind turbine computer, and the wind turbine computer measures the blade swing amplitudes according to the laser radar ranging device;
When the swing amplitude of a certain position of the blade is measured by the laser radar ranging device and is overlarge, other positions are monitored immediately, the other positions are positions which are closer to the root of the blade relative to the certain position of the blade, the laser radar ranging device rotates for a certain angle, when the swing amplitude of the other position is detected to be normal by the laser radar ranging device, the existence of cracks between the certain position and the other position can be judged, the laser radar ranging device continues to rotate and measure, the range of the cracks is further reduced, and the later maintenance is facilitated.
2. A lidar ranging system for monitoring the operational status of a wind turbine blade as claimed in claim 1, wherein: the laser radar ranging device is used for measuring distances from the laser radar ranging probe to different positions of the blade under different angles.
3. A lidar ranging system for monitoring the operational status of a wind turbine blade as claimed in claim 1, wherein: the minimum distance measured by the laser radar ranging device is the distance from the blade when the laser radar ranging probe is in the horizontal position.
4. A lidar ranging system for monitoring the operational status of a wind turbine blade as claimed in claim 1, wherein: the laser radar ranging device comprises a fixing frame (1), a first rotating shaft (2) and a second rotating shaft (3) are sequentially connected to the two sides of the top of the fixing frame (1) in a rotating mode, a laser radar ranging probe (4) is fixed between the first rotating shaft (2) and the second rotating shaft (3), one end of the first rotating shaft (2) is fixedly connected with a first synchronous wheel (5), the bottom of the fixing frame (1) is fixedly connected with a motor (6) and a controller (9), the output shaft end of the motor (6) is fixedly connected with a second synchronous wheel (7), a synchronous belt (8) is connected between the first synchronous wheel (5) and the second synchronous wheel (7) in a transmitting mode, a mounting frame (10) is fixedly connected to the top of one side of the fixing frame (1), one end of the mounting frame (10) is fixedly connected with an angle sensor (11), and the detection end of the angle sensor (11) is fixedly connected with one end of the second rotating shaft (3).
5. A lidar ranging system for monitoring the operational status of a wind turbine blade as defined in claim 4, wherein: the motor (6) adopts a servo motor.
6. A lidar ranging system for monitoring the operational status of a wind turbine blade as defined in claim 4, wherein: the controller (9) is used for controlling the motor (6) and the laser radar ranging probe (4), and the laser radar ranging probe (4) and the angle sensor (11) transmit measurement data to the wind turbine computer through the controller (9).
7. A lidar ranging system for monitoring the operational status of a wind turbine blade as claimed in claim 1, wherein: the transmission mode of the data transmission equipment comprises satellite transmission, mobile network transmission and optical fiber transmission.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667490.7A CN114412724B (en) | 2021-12-31 | 2021-12-31 | Laser radar ranging system for monitoring running state of wind power blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111667490.7A CN114412724B (en) | 2021-12-31 | 2021-12-31 | Laser radar ranging system for monitoring running state of wind power blade |
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| CN114412724A CN114412724A (en) | 2022-04-29 |
| CN114412724B true CN114412724B (en) | 2024-07-12 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103364072A (en) * | 2013-08-05 | 2013-10-23 | 成都谦恒安泰智能科技有限公司 | Wind turbine generator blade on-line detecting method and device |
| CN106501280A (en) * | 2016-12-05 | 2017-03-15 | 南京工程学院 | Fan blade on-line measuring device and detection method thereof based on laser ranging |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9574546B2 (en) * | 2012-06-14 | 2017-02-21 | General Electric Company | Wind turbine rotor control |
| CN203688800U (en) * | 2014-01-26 | 2014-07-02 | 山东省科学院海洋仪器仪表研究所 | Scanning laser radar and laser radar system |
| CN108915957A (en) * | 2018-06-12 | 2018-11-30 | 远景能源（江苏）有限公司 | A method of for monitoring the deformation of blade |
| EP3810928A1 (en) * | 2018-06-21 | 2021-04-28 | Vestas Wind Systems A/S | A wind turbine blade, a method of controlling a wind turbine, a control system, and a wind turbine |
| CN110907940A (en) * | 2018-09-17 | 2020-03-24 | 天津天瑞博科技有限公司 | Three-dimensional laser radar |
| US20230107092A1 (en) * | 2020-02-27 | 2023-04-06 | Lm Wind Power A/S | System and method for monitoring wind turbine rotor blades using infrared imaging and machine learning |
| CN112267980B (en) * | 2020-10-26 | 2023-12-15 | 无锡风电设计研究院有限公司 | Blade clearance monitoring system and method of wind generating set |
| CN113586363B (en) * | 2021-08-27 | 2023-05-02 | 西安热工研究院有限公司 | Wind turbine generator blade deflection monitoring device and method |
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- 2021-12-31 CN CN202111667490.7A patent/CN114412724B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364072A (en) * | 2013-08-05 | 2013-10-23 | 成都谦恒安泰智能科技有限公司 | Wind turbine generator blade on-line detecting method and device |
| CN106501280A (en) * | 2016-12-05 | 2017-03-15 | 南京工程学院 | Fan blade on-line measuring device and detection method thereof based on laser ranging |
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