WO2019184181A1

WO2019184181A1 - Wind turbine group, leveling device, and leveling control method, device and system

Info

Publication number: WO2019184181A1
Application number: PCT/CN2018/098961
Authority: WO
Inventors: 邢波
Original assignee: 新疆金风科技股份有限公司
Priority date: 2018-03-30
Filing date: 2018-08-06
Publication date: 2019-10-03
Also published as: CN110318946A; CN110318946B

Abstract

A leveling device for a wind turbine group. The wind turbine group can comprise a nacelle (3). The leveling device can comprise: a leveling wing (6) disposed on the nacelle (3) and used for transferring the received wind to the nacelle (3) so as to adjust the center of gravity position thereof; and a drive mechanism connected to the leveling wing (6) and used for adjusting an altitude of the leveling wing (6) so as to adjust the wind received by the leveling wing. The leveling device can adjust the center of gravity position of the nacelle so as to make the distance between the center of gravity of the nacelle and a center line of a cylindrical tower fall within the expected distance range, thereby stabilizing the nacelle and the cylindrical tower. The present invention also relates to a leveling control method, device and system.

Description

Wind turbine generator and leveling device, leveling control method, device and system

Technical field

The present invention relates to the field of wind power generation, and more particularly to a wind power generator set and leveling device, a leveling control method, apparatus and system.

Background technique

At present, countries around the world have reached a consensus on how to carry out international cooperation and develop clean energy for climate change. Wind power is a way of using renewable energy and has the potential for large-scale applications. Wind turbines (especially megawatt wind turbines) are bulky and include at least: a tower, a nacelle disposed on the tower, a hub disposed on the nacelle, and blades disposed on the hub, wherein the tower is To support the nacelle, the nacelle is at the desired height so that the cabin receives the corresponding wind.

Typically, the center of gravity of the nacelle is on the centerline of the tower. However, when the engine room is subjected to an external force, the position of the center of gravity of the nacelle changes, resulting in instability of the wind turbine. For example, a change in the position of the center of gravity of the nacelle may cause an increase in yaw acceleration, which may cause a malfunction; a change in the position of the center of gravity of the nacelle may cause uneven force on the wind turbine, thereby causing a secondary risk.

Summary of the invention

The various aspects of the present invention address at least the above mentioned problems and/or disadvantages and at least provide the following advantages. In addition, the present invention may not solve the above mentioned problems and/or disadvantages.

According to an aspect of the present invention, a leveling device for a wind power generator set is provided. The wind power generator may include a nacelle, and the leveling device may include: a leveling wing disposed on the nacelle for transmitting the received wind power to the nacelle to adjust a center of gravity of the nacelle; driving And a mechanism coupled to the leveling wing for adjusting a posture of the leveling wing to adjust a wind force received by the leveling wing.

According to another aspect of the present invention, a leveling control method for a wind power generator set is provided. The wind power generator may include the leveling device as described above, wherein the leveling control method may include: receiving the measured force information and wind direction information of the wind power generator set; according to the force information and The wind direction information adjusts the attitude of the leveling wing to adjust the wind force experienced by the leveling wing.

According to another aspect of the present invention, a leveling control device for a wind power generator set is provided. The wind turbine generator may include the leveling device as described above, wherein the leveling control device may include: a receiving module, configured to receive the measured force information and wind direction information of the wind power generator set; and the control module And adjusting the attitude of the leveling wing according to the force information and the wind direction information received by the receiving module to adjust the wind force received by the leveling wing.

According to another aspect of the present invention, a leveling control system for a wind power generator set is provided. The wind turbine can include a leveling device as described above. The leveling control system may include: a force measuring mechanism for measuring force information of the wind power generator; a wind measuring mechanism for measuring wind direction information; and a leveling control device as described above.

According to another aspect of the present invention, there is provided a leveling system for a wind power generator, which may include a leveling control device as described above and a leveling device as described above.

According to another aspect of the present invention, there is provided a computer readable storage medium storing instructions that, when executed by a processor, cause a processor to perform a leveling control method as described above.

According to another aspect of the present invention, a computer apparatus is provided that can store instructions that, when executed by a processor, cause a processor to perform a leveling control method as described above.

According to another aspect of the present invention, there is provided a wind power generator set which may include a leveling device as described above, or a leveling control device as described above, or a leveling control system as described above, or as described above A leveling system, or a computer readable storage medium as described above, or a computer device as described above.

The present invention can adjust the center of gravity of the nacelle by using a leveling wing such that the distance between the center of gravity of the nacelle and the centerline of the tower is within a desired distance, thereby allowing the nacelle and tower to be smooth. Thereby, the increase of the yaw acceleration of the nacelle and the failure caused by the increase of the yaw acceleration can be avoided, the loss of at least a part of the tower and the wind turbine generator component (for example, the yaw bearing) can be reduced, and the secondary risk can be reduced. .

Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description.

DRAWINGS

The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The embodiments are described below in order to explain the present invention by referring to the figures.

FIG. 1 illustrates a wind power generator set in accordance with an exemplary embodiment of the present invention;

FIG. 2 illustrates a wind power generator set in accordance with another exemplary embodiment of the present invention;

FIG. 3 illustrates a wind power generator set in accordance with another exemplary embodiment of the present invention;

Figure 4 shows a schematic view of a wind power plant provided with a leveling control system in accordance with an exemplary embodiment of the present invention;

Figure 5 is a plan view of Figure 4;

Figure 6 shows a schematic view of a leveling device in accordance with an exemplary embodiment of the present invention;

FIG. 7 shows a schematic diagram of a leveling control device according to an exemplary embodiment of the present invention; FIG.

FIG. 8 shows a flowchart of a leveling control method according to an exemplary embodiment of the present invention;

FIG. 9 illustrates a flow chart for determining a wind force desired to be received, in accordance with an exemplary embodiment of the present invention; FIG.

Figure 10 is a schematic view showing the correspondence between the posture of the leveling wing, the wind direction, and the force received by the leveling wing;

Figure 11 is another schematic diagram showing the correspondence between the attitude of the leveling wing, the wind direction, and the forces experienced by the leveling wing.

detailed description

Hereinafter, exemplary embodiments of the inventive concept will be described in more detail with reference to the accompanying drawings.

1 to 3 illustrate a wind power generator set according to an exemplary embodiment of the present invention. As shown in FIGS. 1 to 3, the wind power generator may include a tower 5, a nacelle 3 disposed on the tower 5, a hub 2 disposed at the head of the nacelle 2, and a wind set at the tail of the nacelle 3. The mechanism 4, and the blade 1 disposed on the hub 2, wherein the tower 5 is the main load-bearing component, affects the safety of the wind turbine if the tower 5 has problems such as uneven force.

Normally, as shown in FIG. 1, the center of gravity G of the nacelle 3 is located on the center line of the tower 5. That is to say, the point B on the center line of the tower 5 is located on the center line of gravity of the cabin passing through the center of gravity G of the nacelle 3. In this case, the angle between the axis of the nacelle 3 and the horizontal line is A, and the wind direction F is horizontal.

The position of the center of gravity G changes as the wind direction F changes. During the transition of the wind direction F from the horizontal direction to the vertical downward direction, as shown in FIG. 2, the wind received by the blade 1 is transmitted to the nacelle 3 through the hub 2, so that the position of the center of gravity of the nacelle 3 is shifted toward the direction of the hub 2. . In this case, the force received by the nacelle 3 is transmitted to the tower 5, so that the tower 5 is unevenly loaded, and it is easy to accelerate the loss of the tower 5 and reduce the service life of the tower 5.

The wind turbine of the present exemplary embodiment may include a yaw system for yawing the nacelle. The yaw system may include a yaw bearing disposed between the tower and the machine side. In the case shown in Fig. 2, the yaw bearing is unevenly stressed, and it is easy to accelerate the loss of the yaw bearing and reduce the service life of the yaw bearing.

In the process of the wind direction F transitioning from the horizontal direction to the vertical upward direction, as shown in FIG. 3, the wind received by the blade 1 is transmitted to the nacelle 3 through the hub 2, so that the position of the center of gravity of the nacelle 3 is biased toward the wind measuring mechanism 4. shift. In this case, the force received by the nacelle 3 is transmitted to the tower 5, so that the tower 5 is unevenly loaded, and it is easy to accelerate the loss of the tower 5 and reduce the service life of the tower 5.

In the case shown in Figs. 2 and 3, it is also possible that the yaw acceleration is increased due to the change in the position of the center of gravity of the nacelle 3, causing secondary risks such as inverted towers.

4 shows a schematic diagram of a wind power plant provided with a leveling control system in accordance with an exemplary embodiment of the present invention.

As shown in FIG. 4, the wind power generator may include a tower 5, a nacelle 3 disposed on the tower 5, a hub 2 disposed at a head of the nacelle 3, and a blade 1 disposed on the hub 2. The wind power generator set of the present exemplary embodiment may further include a leveling device.

As an example, the leveling device may comprise: a leveling wing 6 disposed on the nacelle 3 for transmitting the received wind to the nacelle 3 to adjust the position of the center of gravity of the nacelle 3; a drive mechanism coupled to the leveling wing 6, It is used to adjust the attitude of the leveling wing 6 to adjust the wind force received by the leveling wing 6. As an example, the drive mechanism can include a driver and a transmission mechanism; the transmission mechanism can include a gear set and a drive shaft, the drive, the gear set, and the drive shaft are sequentially coupled, and the leveling wing is mounted on the drive shaft and rotates with the drive shaft. Hereinafter, the leveling device will be described in detail with reference to FIG.

As an example, the leveling control system may include: a force measuring mechanism for measuring force information of the wind power generator; a wind measuring mechanism 4, which may be disposed at the tail of the nacelle 3 for measuring wind direction information; and a leveling control device, And receiving the measured force information and the wind direction information, and adjusting the posture of the leveling wing 6 according to the force information and the wind direction information to adjust the wind force received by the leveling wing 6 .

In a preferred embodiment, the wind measuring mechanism 4 can measure the wind direction in the plane consisting of the horizontal line and the center line of the tower 5, especially the vertical direction.

5 is a top view of FIG. 4, in which the wind turbine can include a yaw bearing 7 that can measure the position C at the yaw bearing 7 and/or the external force experienced by the yaw bearing 7 at position D As the force information.

As an example, the force measuring mechanism includes two resistance strain type force sensors, which are disposed at position C and position D, respectively. The resistance strain type force sensor mainly includes a resistance strain gauge. The strain gauge can be formed from a conductor or a semiconductor material. The conductor or semiconductor material is deformed under the action of an external force, and the resistance value thereof is also changed accordingly. Such a phenomenon is called a resistance strain effect. Two strain gauges are fixed at position C and position D, respectively. When the yaw bearing is unevenly stressed, the deformations caused by position C and position D are different. The correspondence between the change in the resistance value of the strain gauge and the force information can be determined. Thereby, the force information can be determined by the change in the resistance value of the strain gauge provided at these two positions. In a preferred embodiment, position C and position D are located at the junction of the yaw bearing and the nacelle 3.

FIG. 6 shows a schematic diagram of a leveling device in accordance with an exemplary embodiment of the present invention.

As shown in FIG. 6, the leveling device of the present exemplary embodiment may include a leveling wing 6 and a drive mechanism. The leveling wing 6 can include a blade 10 and a blade 11. The drive mechanism can include a driver 8 and a transmission for powering. The transmission mechanism can include a gear set and a drive shaft 9. The gear set can include gear 14 and gear 15. The driver 8, the gear 14, the gear 15, and the drive shaft 9 are sequentially connected. The blade 10 and the blade 11 are fixedly mounted on the transmission shaft 9 and are rotatable with the transmission shaft 9. The drive shaft 9 is mounted on the nacelle 3 via bearings 12 and bearings 13. The drive 8 can include an electric motor and a frequency converter for controlling the electric motor. The drive 8 can also be powered hydraulically.

In the present embodiment, the driver 8 can sequentially transmit power to the blade 10 and the blade 11 through the gear 14, the gear 15 and the transmission shaft 9 to change the attitude of the blade 10 and the blade 11, that is, change the posture of the leveling wing 6. . When the attitude of the leveling wing 6 is changed, the wind force received by the leveling wing 6 can be changed, thereby changing the external force transmitted to the nacelle 3. When the external force transmitted to the nacelle 3 is changed, the relative position between the center of gravity of the nacelle 3 and the tower 5 changes. When the posture of the leveling wing 6 is adjusted in a reasonable manner, the tower 5 can be uniformly and stably stressed, the tower 5 can be prevented from being damaged, the service life of the tower 5 can be prolonged, and the secondary risk can be prevented. The change in the attitude of the leveling wing 6 can be achieved by the leveling control device in the exemplary embodiment of the present invention.

In an exemplary embodiment of the invention, the driver 8 may be an electric motor that can calculate the zero position of the motor. For example, the zero position of the motor can be calculated from the value fed back by the motor rotation absolute encoder. Whether it is necessary to correct the zero position by: selecting at least two positions from among the positions that the motor can reach, and calculating at least two zero positions respectively corresponding to the at least two positions; when the at least two zero positions When the deviation between the two is less than the set value, it is judged that it is not necessary to correct the zero position, so that the motor can continue to work, otherwise it is judged that the zero position needs to be corrected and an alarm is issued. This enables an accurate automatic judgment of the zero position for protection such as calibration.

FIG. 7 shows a schematic diagram of a leveling control device in accordance with an exemplary embodiment of the present invention. As shown in FIG. 7, the leveling control apparatus 100 may include: a receiving module 101, configured to receive the measured force information and wind direction information; and a control module 102, configured to adjust according to the force information and the wind direction information Level the wing to adjust the wind that the leveling wing receives.

As an example, the control module 102 can include a center of gravity determination module (not shown) for determining a change in the position of the center of gravity of the nacelle based on the force information; a wind determination module (not shown) for The change in position of the center of gravity determines the desired wind force of the leveling wing; an attitude adjustment module (not shown) for adjusting the attitude of the leveling wing based on the wind direction information and the desired wind force.

As an example, the force information includes: a magnitude of a first bearing force received by the first position on the wind turbine and a magnitude of a second bearing force received by the second position on the wind turbine, wherein the center of gravity is determined The module calculates a difference in size between the first withstand force and the second withstand force, and determines a change in the position of the center of gravity of the nacelle 3 based on the difference in magnitude. For example, referring to FIGS. 4 and 5, the magnitude of the first bearing force received by the position C and the magnitude of the second bearing force received by the position D can be measured, and the line connecting the position C and the position D can be parallel to the center line of the nacelle 3, The distance of the position C from the hub 2 is greater than the distance of the position D from the hub 2. In this case, whether the nacelle 3 or the tower 5 is uniformly stressed can be determined by the difference in magnitude between the first withstand force and the second withstand force, and when the difference in magnitude exceeds a predetermined threshold, the nacelle 3 can be determined. Or the tower 5 is unevenly stressed. At this time, it is necessary to change the external force received by the nacelle 3 or the tower 5 to avoid damage to the nacelle 3 or the tower 5.

As an example, the change in the position of the center of gravity includes a change in direction and a degree of change, wherein the wind determination module determines the said center of gravity position is offset toward a head of the nacelle and the degree of change exceeds a predetermined threshold The wind force that is desired to be subjected is a downforce; when the center of gravity position is offset toward the tail of the nacelle and the degree of change exceeds the predetermined threshold, the wind determination module determines that the wind force desired to be subjected is a rising force.

As an example, the attitude adjustment module determines whether the leveling wing has obtained the desired wind force according to the wind direction information and the current attitude of the leveling wing; when the leveling wing does not obtain the When the wind is desired to be received, the attitude adjustment module causes the leveling wing to obtain the desired wind force by adjusting an angle at which the leveling wing rotates about a particular axis.

As an example, the angle of rotation of the motor can be detected by a motor rotary absolute encoder so that the angle of the leveling wing rotation can be calculated from the angle of rotation of the motor.

In a preferred embodiment, the particular axis is parallel to the horizontal plane and perpendicular to the length of the nacelle. In another embodiment, the particular axis is two or more, and at least one blade may be disposed on each axis. In another preferred embodiment, the two or more specific axes are in a particular plane, the length direction of the nacelle being perpendicular to the particular plane, each particular axis corresponding to at least one rotation about the particular axis The blades of the flat wing.

As an example, the attitude adjustment module may determine a desired position of the leveling wing when the leveling wing obtains the desired wind force, and adjust the position of the leveling wing according to the sensing The angle of rotation of the leveling wing is such that the leveling wing is rotated to the desired position.

As an example, the position of the leveling wing can be sensed by the position sensor. A position sensor can be located adjacent the blade 10 and/or the blade 11 and disposed on the nacelle or leveling device to sense the position of the blade of the leveling wing. Whether the leveling wing reaches a desired position can be determined based on the position of the leveling wing sensed by the position sensor. The leveling wing can also be determined according to the sensed position to reach the maximum rotational position, and when the leveling wing reaches the maximum rotational position, the leveling wing stops rotating or rotates in the opposite direction to avoid leveling the wing damage.

FIG. 8 shows a flow chart of a leveling control method according to an exemplary embodiment of the present invention.

As shown in FIG. 8, the leveling control method of the present exemplary embodiment may be used to control the leveling device described in the exemplary embodiment of the present invention, and includes: step 201, receiving the measured wind turbine generator set Force information and wind direction information; Step 202: Adjust the posture of the leveling wing according to the force information and the wind direction information to adjust the wind force received by the leveling wing.

As an example, the step 202 may include: determining a change in a position of a center of gravity of the nacelle according to the force information; determining a desired wind force of the leveling wing according to the change in the position of the center of gravity; according to the wind direction The information and the desired wind force are adjusted to adjust the attitude of the wing.

As an example, the force information may include: a magnitude of a first bearing force received by the first position on the wind turbine and a magnitude of a second bearing force received by the second position on the wind turbine, The step of determining the change in the position of the center of gravity of the nacelle by the force information includes: calculating a difference in size between the first withstand force and the second withstand force; determining a change in the position of the center of gravity of the nacelle according to the difference in the size . For example, referring to FIG. 4 and FIG. 5, the magnitude of the first bearing force received by the position C and the magnitude of the second bearing force received by the position D can be measured, and the line connecting the position C and the position D is parallel to the center line of the nacelle 3, The distance of the position C from the hub 2 is greater than the distance of the position D from the hub 2. In this case, whether the nacelle 3 or the tower 5 is uniformly stressed can be determined by the difference in magnitude between the first withstand force and the second withstand force, and when the difference in size exceeds a predetermined threshold, the need can be determined. The external force received by the nacelle 3 or the tower 5 is changed to avoid damage to the nacelle 3 or the tower 5.

As an example, the change in the position of the center of gravity includes a change in direction and a degree of change, the step of determining the desired wind force of the leveling wing according to the change in the position of the center of gravity may include: when the position of the center of gravity is toward the nacelle When the head is offset and the degree of change exceeds a predetermined threshold, the wind force that is desired to be subjected is a downward pressure; when the position of the center of gravity is offset toward the tail of the nacelle and the degree of change exceeds the predetermined threshold, The wind that is expected to be received is a rising force.

As an example, the step of adjusting the attitude of the leveling wing according to the wind direction information and the wind force desired to be received may include determining the tone according to the wind direction information and a current posture of the leveling wing Whether the flat wing has obtained the desired wind force; when the leveling wing does not obtain the desired wind force, the leveling is adjusted by adjusting the angle at which the leveling wing rotates about a particular axis The wing obtains the desired wind force.

As an example, the step of adjusting an angle at which the leveling wing rotates about a particular axis may include determining a desired position of the leveling wing when the leveling wing obtains the desired wind force; The sensed position of the leveling wing adjusts the angle of rotation of the leveling wing to rotate the leveling wing to the desired position.

The desired wind force described in the exemplary embodiment of the present invention can be calculated by the flow shown in FIG. As shown in FIG. 9, at step 301, the magnitude X of the first withstand force and the magnitude Y of the second withstand force are obtained. At step 302, it is compared whether the absolute value of the difference between X and Y is less than the threshold Z for starting the leveling, and if so, proceeds to step 303, otherwise to step 304. At step 303, it is determined that there is no need to adjust the center of gravity of the nacelle. At step 304, a comparison is made to determine if X is greater than Y, and if so, then proceeds to step 306, otherwise to step 305. At step 306, it is determined that the wind force that is desired to be received is a downforce. At step 305, it is determined that the wind force that is desired to be received is a rising force.

After step 305, step 307 may be performed to determine whether the leveling wing has the ability to obtain the lifting force in the current environment. If yes, proceed to step 310, otherwise proceed to step 309, the current environment including at least the wind direction. At step 310, the attitude of the leveling wing is adjusted to achieve a lifting force for the leveling wing. At step 309, a first alarm is issued, the first alarm indicating that the leveling wing does not have the ability to obtain a lift in the current environment.

After step 306, the process may proceed to step 308 to determine whether the leveling wing has the ability to obtain the descent force in the current environment. If yes, proceed to step 311, otherwise proceed to step 312. At step 311, the attitude of the leveling wing is adjusted to achieve a lowering force for the leveling wing. At step 312, a second alarm is issued indicating that the leveling wing does not have the ability to obtain a descent force in the current environment.

The ability to obtain the lifting force refers to: at least one position of the leveling wing in its range of motion, the component of the wind received in the vertical upward direction or the wind received in the direction perpendicular to the axis of the nacelle and upward The upper component is greater than zero. The ability to obtain a descending force means that the leveling wing is at least one position within its range of motion, and the component of the wind subjected to the vertical downward direction or the received wind force is perpendicular to the cabin axis and downward. The force component in the direction is greater than zero.

When the first alarm or the second alarm is issued, it is possible to detect whether a failure of the measuring component (for example, a wind measuring mechanism, a force measuring mechanism, a position sensor, etc.) occurs.

Fig. 10 is a schematic view showing the correspondence relationship between the posture of the leveling wing, the wind direction, and the force received by the leveling wing.

In the present exemplary embodiment, the body of the leveling wing is in the shape of a blade, as shown in Fig. 10, the longitudinal direction of the body of the leveling wing is perpendicular to the plane of the paper. In Fig. 10, the wind direction is F, and F can be decomposed into a wind direction f1 in the horizontal direction and a wind direction f2 in the vertical direction. In the first attitude, the direction in which the leveling wings extend is parallel to the wind direction. In this case, the leveling wing is not able to adjust the position of the center of gravity of the nacelle. In the second attitude, the direction of the leveling wing extends at an acute angle to the wind direction F, and the leveling wing can obtain the downforce. In the third attitude, the wind direction F is perpendicular to the direction in which the leveling wing extends, and the leveling wing is also able to obtain the downforce.

However, in the exemplary embodiment shown in FIG. 10, the leveling wing is only capable of obtaining the downforce when the leveling wing is only changeable within the range defined by the first attitude to the third attitude, without obtaining The ability to rise.

Fig. 11 is a schematic view showing the correspondence relationship between the posture of the leveling wing, the wind direction, and the force received by the leveling wing.

As shown in FIG. 11, the wind direction is F, and F can be decomposed into a wind direction f1 in the horizontal direction and a wind direction f2 in the vertical direction. In the fourth attitude, the direction of the leveling wing is parallel to the wind direction. In this case, the leveling wing is not able to adjust the position of the center of gravity of the nacelle. In the fifth attitude, the direction of the leveling wing extends at an acute angle to the wind direction F, and the leveling wing can obtain the lifting force. In the sixth attitude, the wind direction F is perpendicular to the direction in which the leveling wing extends, and the leveling wing can also obtain the lifting force.

However, in the exemplary embodiment shown in FIG. 11, the leveling wing is only capable of obtaining the lifting force when the leveling wing is only changeable within the range defined by the fourth posture to the sixth posture, and does not have the ability to obtain The ability to stress.

As shown in Figures 10 and 11, the wind force corresponds to the attitude of the leveling wing. Therefore, it is desirable that the wind force received corresponds to the desired posture.

In FIG. 10, if the wind force desired to be received is the downforce, when the current attitude of the leveling wing is the first attitude, the leveling wing needs to be rotated, for example, to bring the leveling wing to the second attitude or The position corresponding to the third posture is such that the leveling wing receives the downforce.

In FIG. 11, if the wind force desired to be received is a rising force, when the current attitude of the leveling wing is the fourth attitude, the leveling wing needs to be rotated, for example, to bring the leveling wing to the fifth posture or The position corresponding to the sixth posture, in order to obtain the lifting force of the leveling wing.

In an exemplary embodiment of the invention, the leveling wings and the hub may be located on either side of the center of gravity of the nacelle along the length of the nacelle to equalize the wind received by the nacelle. For example, a leveling wing can be placed at the rear of the nacelle. The number of blades of the leveling wing is not limited and may be one or more pieces.

The above embodiment is merely an example, and the position of the leveling wing is not limited to the above embodiment. For example, the leveling wing and hub may be located on the same side of the center of gravity of the nacelle along the length of the nacelle.

In an embodiment of the invention, the attitude of the leveling wing is changed by rotating the leveling wing, and at the same time, the angle between the direction of extension of the leveling wing and the wind direction can be changed to change the wind received by the leveling wing. the size of.

According to another exemplary embodiment of the present invention, a leveling system for a wind power generator set is provided. The leveling system can include a leveling control device and a leveling device as described in the exemplary embodiments of the present invention.

According to another exemplary embodiment of the present invention, there is provided a computer readable storage medium storing instructions that, when executed by a processor, cause a processor to perform a leveling control method as described in an exemplary embodiment of the present invention .

According to another exemplary embodiment of the present invention, a computer device is provided. The computer device stores instructions that, when executed by a processor, cause the processor to perform the leveling control method described in the exemplary embodiments of the present invention.

According to another exemplary embodiment of the present invention, a wind power generator set is provided. The wind turbine may comprise a leveling device as described in an exemplary embodiment of the invention, or a leveling control device as described in an exemplary embodiment of the invention, or in an exemplary embodiment of the invention The leveling control system, or a leveling system as described in an exemplary embodiment of the invention, or a computer readable storage medium as described in an exemplary embodiment of the invention, or an example of the invention Computer device as described in the embodiments.

The present invention employs a leveling wing to adjust the center of gravity of the nacelle to stabilize the nacelle and/or tower. As a result, changes in the yaw acceleration of the nacelle and failures caused by changes in yaw acceleration can be avoided, reducing losses in the tower and some components of the wind turbine (eg, yaw bearings), reducing the secondary risk.

The methods and apparatus provided by the exemplary embodiments of the present invention may be implemented by a stand-alone controller (e.g., a PLC controller) or by a controller of a wind turbine.

The computer readable storage medium in the embodiments of the present invention includes program commands, data files, data structures, and the like, or a combination thereof. A program recorded in a computer readable storage medium can be designed or configured to implement the methods of the present invention. Computer readable storage media includes hardware systems for storing and executing programs and/or commands. Examples of hardware systems are magnetic media (such as hard disks, floppy disks, magnetic tapes), optical media (such as CD-ROMs and DVDs), magneto-optical media (such as floppy disks, ROM, RAM, flash memory, etc.). Programs and/or commands include assembly language code or machine code compiled by a compiler and higher level language code interpreted by an interpreter. The hardware system can be implemented with at least one software module to comply with the present invention.

One or more general purpose or special purpose computers (eg, processors, controllers, digital signal processors, microcomputers, field programmable arrays, programmable logic units, microprocessors, or any other capable of executing software or executing instructions) Apparatus) to implement at least a portion of the above methods, apparatus, and/or systems. The at least a portion can be implemented in an operating system or in one or more software applications operating under an operating system.

The description of the present invention has been presented for purposes of illustration and description. Various modifications and changes may be made to the embodiments without departing from the spirit and scope of the invention.

Claims

A leveling device for a wind power generator, characterized in that the wind power generator comprises a nacelle, and the leveling device comprises:

a leveling wing disposed on the nacelle for transmitting the received wind power to the nacelle to adjust a center of gravity of the nacelle;

a driving mechanism coupled to the leveling wing for adjusting a posture of the leveling wing to adjust a wind force received by the leveling wing.
The leveling device of claim 1 wherein said drive mechanism comprises a driver and a transmission;

The transmission mechanism includes a gear set and a transmission shaft, the drive, the gear set and the transmission shaft are sequentially connected, and the leveling wing is mounted on the transmission shaft and rotates with the transmission shaft.
A leveling control method for a wind power generator, characterized in that the wind power generator set includes the leveling device according to claim 1 or 2, wherein the leveling control method comprises:

Receiving the measured force information and wind direction information of the wind power generator set;

Adjusting the attitude of the leveling wing according to the force information and the wind direction information to adjust the wind force received by the leveling wing.
The leveling control method according to claim 3, wherein said adjusting said attitude of said leveling wing based on said force information and said wind direction information to adjust a wind force received by said leveling wing The steps include:

Determining a change in a position of a center of gravity of the nacelle according to the force information;

Determining a desired wind force of the leveling wing according to a change in the position of the center of gravity;

The attitude of the leveling wing is adjusted based on the wind direction information and the desired wind force.
The leveling control method according to claim 4, wherein the force information includes: a magnitude of a first bearing force received by the first position on the wind power generator set and a number on the wind power generating set The magnitude of the second bearing force received by the two positions,

The step of determining a change in the position of the center of gravity of the nacelle according to the force information includes:

Calculating a difference in size between the first withstand force and the second withstand force;

A change in the position of the center of gravity of the nacelle is determined based on the difference in size.
The leveling control method according to claim 4, wherein the change in the position of the center of gravity includes changing a direction and a degree of change, and determining a desired wind force of the leveling wing according to a change in the position of the center of gravity The steps include:

When the position of the center of gravity is offset toward the head of the nacelle and the degree of change exceeds a predetermined threshold, the desired wind force is a downforce;

The desired wind force is a rising force when the center of gravity position is offset toward the tail of the nacelle and the degree of change exceeds the predetermined threshold.
The leveling control method according to claim 4, wherein the step of adjusting the posture of the leveling wing according to the wind direction information and the wind force desired to be received comprises:

Determining, according to the wind direction information and a current attitude of the leveling wing, whether the leveling wing has obtained the desired wind force;

The leveling wing obtains the desired wind force by adjusting an angle at which the leveling wing rotates about a particular axis when the leveling wing does not achieve the desired wind force.
The leveling control method according to claim 7, wherein said step of adjusting an angle at which said leveling wing rotates about said specific axis comprises:

Determining a desired position of the leveling wing when the leveling wing obtains the desired wind force;

Adjusting a rotation angle of the leveling wing based on the sensed position of the leveling wing to rotate the leveling wing to the desired position.
A leveling control device for a wind power generator, characterized in that the wind power generator set includes the leveling device according to claim 1 or 2, wherein the leveling control device comprises:

a receiving module, configured to receive the measured force information and wind direction information of the wind power generator set;

And a control module, configured to adjust a posture of the leveling wing according to the force information and the wind direction information received by the receiving module to adjust a wind force received by the leveling wing.
The leveling control apparatus according to claim 9, wherein said control module comprises:

a center of gravity determining module, configured to determine a change in a position of a center of gravity of the nacelle according to the force information;

a wind determining module, configured to determine a desired wind force of the leveling wing according to the change in the position of the center of gravity;

And an attitude adjustment module, configured to adjust a posture of the leveling wing according to the wind direction information and the desired wind force.
The leveling control apparatus according to claim 10, wherein said force information comprises: a magnitude of a first bearing force received by said first position on said wind power generator set and a number on said wind power generating set The magnitude of the second bearing force received by the two positions,

The center of gravity determination module calculates a difference in size between the first withstand force and the second withstand force, and determines a change in a position of a center of gravity of the nacelle according to the difference in size.
The leveling control device according to claim 10, wherein the change in the position of the center of gravity includes a change in direction and a degree of change,

Wherein, when the position of the center of gravity is offset toward the head of the nacelle and the degree of change exceeds a predetermined threshold, the wind determination module determines that the wind force desired to be received is a downward pressure;

The wind determination module determines that the desired wind force is a rising force when the center of gravity position is offset toward the tail of the nacelle and the degree of change exceeds the predetermined threshold.
The leveling control apparatus according to claim 10, wherein said attitude adjustment module determines whether said leveling wing has obtained said expectation based on said wind direction information and said current attitude of said leveling wing Wind power

The attitude adjustment module obtains the desired level of the leveling wing by adjusting an angle at which the leveling wing rotates about a particular axis when the leveling wing does not obtain the desired wind force Wind power.
A leveling control apparatus according to claim 13 wherein said attitude adjustment module determines a desired position of said leveling wing when said leveling wing obtains said desired wind force, and The measured position of the leveling wing adjusts the angle of rotation of the leveling wing to rotate the leveling wing to the desired position.
A leveling control system for a wind power generator, characterized in that the wind power generator set includes the leveling device according to claim 1 or 2, wherein the leveling control system comprises:

a force measuring mechanism for measuring the force information of the wind turbine;

a wind measuring mechanism for measuring wind direction information;

A leveling control device according to any one of claims 9-14.
A leveling system for a wind power generator, comprising the leveling control device according to any one of claims 9-14 and the leveling device according to claim 1 or 2.
A computer readable storage medium storing instructions that, when executed by a processor, cause a processor to perform the leveling control method of any of claims 3-8.
A computer device storing instructions for causing a processor to perform the leveling control method of any one of claims 3-8 when executed by a processor.
A wind power generator comprising the leveling device according to claim 1 or 2, or the leveling control device according to any one of claims 9-14, or as claimed in claim 15. A leveling control system, or a leveling system according to claim 16, or a computer readable storage medium according to claim 17, or a computer device according to claim 18.