阅读说明：本技术 用于监测风力涡轮机叶片偏转的系统和方法 (System and method for monitoring wind turbine blade deflection ) 是由 V·大卫 D·康坦 R·吉耶梅特 J·克卢捷 于 2017-12-15 设计创作，主要内容包括：本发明公开了一种用于监测包括塔架的风力涡轮机的涡轮叶片偏转的系统。该系统包括安装在风力涡轮机上的位置检测装置,所述位置检测装置包括位置检测组件,每个位置检测组件检测涡轮叶片的相应一个区段的存在或不存在；和偏转控制器,所述偏转控制器被设置为接收存在或不存在检测和使用存在或不存在检测来确定涡轮叶片各区段相对于塔架的距离,由此涡轮机叶片各区段相对于塔架的的距离代表涡轮机叶片的偏转。(A system for monitoring deflection of turbine blades of a wind turbine including a tower is disclosed. The system includes a position detection device mounted on the wind turbine, the position detection device including position detection assemblies, each position detection assembly detecting the presence or absence of a respective one of the sections of turbine blades; and a deflection controller arranged to receive the presence or absence detection and to use the presence or absence detection to determine the distance of each section of the turbine blade relative to the tower, whereby the distance of each section of the turbine blade relative to the tower is representative of the deflection of the turbine blade.)

1. A system for monitoring turbine blade deflection of a wind turbine including a tower, wherein the turbine blade includes a section along a length of the turbine blade, the system comprising:

a position detection device mounted on the wind turbine, the position detection device comprising position detection assemblies, each position detection assembly detecting the presence or absence of a respective one of the sections of turbine blades; and

a deflection controller arranged to receive the presence or absence detection and to use the presence or absence detection to determine a distance of each section of the turbine blades relative to the tower, whereby the distance of each section of the turbine blades relative to the tower is representative of the deflection of the turbine blades.

2. The system of claim 1, wherein the position detection assembly comprises a pulsed laser source and a sensor.

3. A system according to claim 1 or 2, wherein each position detection assembly is arranged at a different angle to the horizontal.

4. A system according to any of claims 1 to 3, wherein each position detection assembly is associated with a different channel, thereby creating a plurality of co-linear channels.

5. The system of any of claims 1-4, wherein the power associated with the first position detection assembly is at a power ratio of about 5 to 1 with respect to the power associated with the second position detection assembly.

6. The system of any of claims 1-5, wherein each position detection assembly is configured to have a spread angle, wherein the spread angle associated with a first position detection assembly is different than the spread angle associated with a second position detection assembly.

7. The system of claim 6, wherein a spread angle ratio of a spread angle associated with the first position detecting assembly to a spread angle associated with the second position detecting assembly is greater than about 2 to 1.

8. The system of any one of claims 1-7, wherein the wind turbine further comprises a nacelle, wherein the position detection device is mounted below the nacelle.

9. The system of claim 8, further comprising at least one of an inclinometer and an accelerometer; wherein at least one of the inclinometer and the accelerometer provides data on the bending of the tower or the inclination of the nacelle.

10. The system of any of claims 1-9, further comprising a correction system, wherein the deflection controller triggers an action performed by the correction system upon detecting deflection of the turbine blade outside of an acceptable range.

11. The system of claim 10, wherein the wind turbine includes a nacelle mounted to the tower, a hub mounted to the nacelle, the turbine blades being mounted to the hub, wherein the correction system is adapted to perform at least one of:

changing a pitch of at least one turbine blade;

varying blade loads by varying torque demand on the hub;

changing the yaw of the nacelle; and

the pauses are applied on the hub.

12. The system of any one of claims 1-11, wherein the position detection device further comprises a plurality of adjacent detection assemblies, each adjacent detection assembly collecting data about a different laterally adjacent detection area, each laterally adjacent detection area corresponding to a different segment of the rotational cycle of the turbine blade, whereby each adjacent detection assembly monitors passage of a blade tip of a turbine blade traveling through an associated different laterally adjacent detection area at a different stage of the rotational cycle of the turbine blade.

13. A system for monitoring deflection of turbine blades, each turbine blade having a blade tip of a wind turbine, the system comprising:

a detection device mounted on the wind turbine remote from the turbine blade, the detection device comprising a plurality of adjacent detection assemblies, each adjacent detection assembly collecting data relating to a different laterally adjacent detection area, each adjacent detection area corresponding to a different segment of the period of rotation of the turbine blade, whereby each adjacent detection assembly monitors the passage of the blade tip of the turbine blade which, when the turbine blade has a level of deflection above a predetermined level, travels through the associated different laterally adjacent detection area at different stages of the period of rotation of the turbine blade; and

a deflection controller arranged to receive the collected data and determine a deflection state of the turbine blade accordingly.

14. The system of claim 13, wherein the proximity detection assembly comprises a pulsed laser source and a sensor.

15. The system of claim 13 or 14, wherein the different laterally adjacent detection zones correspond to the viewable areas of adjacent detection assemblies disposed at different angles relative to a vertical plane.

16. A method of monitoring a clearance between a turbine blade and a wind turbine tower, wherein the turbine blade includes a section along a length of the turbine blade, the method comprising:

detecting the presence or absence of a respective one of the sections of turbine blades using a position detection device mounted on the wind turbine remote from the turbine blades; and

processing the detected presence or absence of detection determines a distance of each section of the turbine blade relative to the tower, whereby the distance of each section of the turbine blade relative to the tower represents a clearance of the turbine blade.

17. The method of claim 16, further comprising at least one of:

detecting an angular position of the turbine blade;

associating the detected presence or absence with a particular one of the turbine blades; and

an anomaly associated with one of the turbine blades relative to the tower is detected.

18. The method of claim 16 or 17, further comprising detecting at least one of tilt data and suitable acceleration data, wherein the processing step further comprises processing at least one of tilt data and suitable acceleration data.

19. The method of any of claims 16 to 18, further comprising receiving external data of the wind turbine, wherein the processing step further comprises establishing parameters based at least on the external data.

20. The method of any of claims 16 to 19, wherein the processing step further comprises comparing the gap to a parameter, and wherein the method further comprises:

identifying a fault condition based on the comparison of the gap to the parameter; and

corrective action is triggered to prevent the turbine blades from striking the tower.

Disclosure of Invention

According to one embodiment, a system for monitoring deflection of a turbine blade of a wind turbine including a tower, wherein the turbine blade includes a section along a length of the turbine blade, is disclosed, the system comprising: a position detection device mounted on the wind turbine, the position detection device comprising position detection assemblies, each position detection assembly detecting the presence or absence of a respective one of the sections of the turbine blade; and a deflection controller arranged to receive the presence or absence detection and to use the presence or absence detection to determine a distance of each section of the turbine blades relative to the tower, whereby the distance of each section of the turbine blades relative to the tower is representative of the deflection of the turbine blades.

According to one aspect, a position detection assembly includes a pulsed laser source and a sensor.

According to one aspect, each position detection assembly is disposed at a different angle relative to horizontal.

According to one aspect, each position detection assembly is associated with a different channel, thereby creating a plurality of collinear channels.

According to one aspect, the power associated with the first position sensing assembly is about 5 to 1 higher than the power associated with the second position sensing assembly.

According to one aspect, each position detection assembly is configured to have a spread angle, wherein the spread angle associated with a first position detection assembly is different than the spread angle associated with a second position detection assembly.

According to one aspect, the spread angle ratio of the spread angle associated with the first position sensing assembly to the spread angle associated with the second position sensing assembly is about 2 to 1.

According to one aspect, the wind turbine further comprises a nacelle, wherein the position detection device is mounted below the nacelle.

According to one aspect, the system further comprises at least one of an inclinometer and an accelerometer; wherein at least one of the inclinometer and the accelerometer provides data regarding the bending of the tower or the inclination of the nacelle.

According to one aspect, the system further comprises a correction system, wherein the deflection controller triggers an action performed by the correction system upon detecting that the deflection of the turbine blades is outside an acceptable range.

According to one aspect, a wind turbine comprises a nacelle mounted to a tower, a hub mounted to the nacelle, to which a turbine blade is mounted, wherein the correction system is adapted to perform at least one of: changing the pitch of at least one turbine blade; varying blade loads by varying torque demand on the hub; changing the yaw of the nacelle; the pauses are applied on the hub.

According to one aspect, the position sensing device further comprises a plurality of adjacent sensing assemblies, each adjacent sensing assembly collecting data about a different laterally adjacent sensing area, each laterally adjacent sensing area corresponding to a different segment of the rotational cycle of the turbine blade, whereby each adjacent sensing assembly monitors the passage of the blade tip of the turbine blade which travels through the associated different laterally adjacent sensing area at different stages of the rotational cycle of the turbine blade.

According to one embodiment, a system for monitoring turbine blade deflection, each turbine blade having a wind turbine blade tip, is disclosed, the system comprising: a detection device mounted on the wind turbine remote from the turbine blade, the detection device comprising a plurality of adjacent detection assemblies, each adjacent detection assembly collecting data relating to a different laterally adjacent detection area, each adjacent detection area corresponding to a different segment of the period of rotation of the turbine blade, whereby each adjacent detection assembly monitors the passage of the blade tip of the turbine blade which, when the turbine blade has a deflection level exceeding a predetermined level, travels through the associated different laterally adjacent detection area at different stages of the period of rotation of the turbine blade; a yaw controller configured to receive the collected data and determine a yaw state of the turbine blade accordingly.

According to one aspect, an adjacent detection assembly includes a pulsed laser source and a sensor.

According to one aspect, the different laterally adjacent detection zones correspond to the viewable areas of adjacent detection assemblies disposed at different angles relative to the vertical plane.

According to one embodiment, a method of monitoring a clearance between a turbine blade and a wind turbine tower, wherein the turbine blade includes a section along a length of the turbine blade, is disclosed, the method comprising: detecting the presence or absence of a respective one of the sections of turbine blades using a position detection device mounted on the wind turbine remote from the turbine blades; and processing the detected presence or absence detection to determine a distance of each section of the turbine blade relative to the tower, whereby the distance of each section of the turbine blade relative to the tower represents a clearance of the turbine blade.

According to one aspect, the method further comprises at least one of: detecting an angular position of the turbine blade; associating the detected presence or absence with a particular one of the turbine blades; and detecting an anomaly associated with one of the turbine blades relative to the tower.

According to one aspect, the method further comprises detecting at least one of tilt data and suitable acceleration data, wherein the processing step further comprises processing at least one of the tilt data and suitable acceleration data.

According to one aspect, the method further comprises receiving external data of the wind turbine, wherein the processing step further comprises establishing the parameter based at least on the external data.

According to one aspect, the processing step further comprises comparing the gap to a parameter, and wherein the method further comprises: identifying a fault condition based on the comparison of the gap to the parameter; and triggering corrective action to prevent the turbine blades from striking the tower.

According to one aspect, implementations may include one or more of the following features.