CN109989895B - Lubricating method and device for yaw system of wind generating set - Google Patents

Abstract

Embodiments of the present invention provide a lubricating method and device for a yaw system of a wind turbine. The lubricating method includes: in the current lubrication cycle, in the case of yaw uncoiling or shutdown of the wind generator set, controlling the yaw lubrication system to grease the yaw bearing; In the case of exiting the shutdown due to the wind speed being greater than the preset value, control the yaw lubrication system to stop adding grease to the yaw bearing. The yaw lubrication system is controlled to add grease to the yaw bearing only when the wind turbine is yaw uncoupling or shut down. Compared with the existing greasing scheme, the embodiment of the present invention can effectively avoid the problem of large power loss caused by lubricating and greasing under good working conditions such as stable wind direction, and improve the power generation of the wind turbine.

Description

Lubrication method and device for wind turbine yaw system

technical field

The invention relates to the technical field of wind turbines, in particular to a lubricating method and device for a yaw system of a wind turbine.

Background technique

The wind turbine yaw system, also known as the wind device, one of its functions is to quickly and smoothly adjust the wind turbine to align the wind direction when the direction of the wind speed vector changes, so that the impeller can obtain the maximum wind energy; another function is to To prevent the wind turbine from yaw rotation in one direction for a long time and cause the cable to be twisted, the yaw and uncable are actively carried out.

At present, the yaw lubrication system of the wind turbine is usually controlled by the main control system of the wind turbine. The wind turbine must be shut down to perform yaw refueling even in the power generation state. Therefore, this rigid refueling method will cause the loss of power generation of the wind turbine, especially when the wind is strong and the wind direction is stable. Power generation losses will be greater.

SUMMARY OF THE INVENTION

The embodiments of the present invention provide a lubricating method and device for a yaw system of a wind power generating set, which can effectively reduce the influence of yaw and grease on the power generation of the wind power generating set and improve the power generating capacity of the power generating set.

According to an aspect of the embodiments of the present invention, there is provided a method for lubricating a yaw system of a wind turbine, the lubricating method comprising:

In the current lubrication cycle, control the yaw lubrication system to add grease to the yaw bearing when the wind turbine is yawed or shut down;

Control the yaw lubrication system to stop adding grease to the yaw bearing when the wind turbine does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value.

According to an aspect of the embodiments of the present invention, the lubricating method further includes:

When the number of times of lubricating grease in the current lubricating cycle reaches the target number, the yaw lubrication system is controlled to stop the lubricating of grease to the yaw bearing.

According to an aspect of the embodiment of the present invention, the target number of times is the sum of the preset number of times of grease lubrication in each lubricating cycle and the number of times of grease lubrication remaining in the previous lubrication cycle;

After the step of controlling the yaw lubricating system to stop lubricating the yaw bearing when the wind turbine does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value, the method further includes:

Update and record the number of remaining unperformed greasings for the current lubrication cycle.

According to an aspect of the embodiment of the present invention, one lubricating cycle is an integer multiple of a preset minimum lubricating cycle; the number of lubricating times of one lubricating cycle is the ratio of one lubricating cycle and the minimum lubricating cycle.

According to an aspect of the embodiments of the present invention, the lubricating method further includes:

When the preset duration of the current lubrication cycle is exceeded, the yaw lubricating system is controlled to stop lubricating the yaw bearing, and the remaining unexecuted times of lubricating the current lubricating cycle are updated and recorded.

According to an aspect of the embodiments of the present invention, the shutdown of the wind turbine is the shutdown when the wind speed is lower than the cut-in wind speed of the wind turbine after power generation is started, or the wind turbine enters shutdown from a grid-connected state.

According to an aspect of the embodiments of the present invention, when the wind turbine generator is shut down, controlling the yaw lubrication system to grease the yaw bearing includes:

After the wind turbine stops, control the yaw system to perform the yaw uncoiling action;

In the process of controlling the yaw system to perform the yaw uncoiling action, the yaw lubricating system is controlled to add grease to the yaw bearing.

According to another aspect of the present invention, there is provided a lubricating device for a yaw system of a wind turbine, the lubricating device may include:

The lubricating and regreasing module is used to control the yaw lubrication system to re-grease the yaw bearing when the wind turbine is yawed or shut down during the current lubrication cycle;

The lubricating and regreasing stop module is used to control the yaw lubrication system to stop the yaw bearing from relubricating when the wind turbine does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value.

According to another aspect of the present invention, the lubricating and greasing stop module is further configured to control the yaw lubricating system to stop the lubricating to the yaw bearing when the number of times of lubricating grease in the current lubrication cycle reaches the target number.

According to another aspect of the present invention, the target number of times is the sum of the preset number of lubricating times in each lubricating cycle and the remaining unexecuted times of lubricating lubricating in the previous lubricating cycle; the lubricating device further includes:

The module for updating the number of remaining grease refills is used to control the yaw lubrication system to stop the step of regreasing the yaw bearing when the wind turbine does not perform yaw decoupling and exits the shutdown due to the wind speed being greater than the preset value. , to update and record the number of remaining unperformed greasings for the current lubrication cycle.

According to another aspect of the present invention, the module for updating the number of remaining lubricating times is further configured to control the yaw lubricating system to stop lubricating the yaw bearing when the preset duration of the current lubricating cycle exceeds, and update and record the remaining lubricating times of the current lubricating cycle. Number of fatliquors not performed.

According to another aspect of the present invention, one lubricating cycle is an integer multiple of a preset minimum grease feeding cycle; the number of grease feeding in one lubricating cycle is the ratio of the current lubricating cycle to the minimum grease feeding cycle.

According to another aspect of the present invention, the shutdown of the wind turbine is the shutdown when the wind speed is lower than the cut-in wind speed of the wind turbine after power generation is started, or the wind turbine enters shutdown from the grid-connected state.

The embodiment of the present invention also provides a lubricating device for a yaw system of a wind turbine, the lubricating device includes a memory and a processor;

the memory stores computer program code;

The processor is configured to read the computer program code to execute the computer program corresponding to the computer program code, so as to implement the lubrication method according to any embodiment of the present invention.

Embodiments of the present invention also provide a computer-readable storage medium, including computer program instructions, which, when the instructions are executed on a computer, cause the computer to execute the lubrication method in any of the embodiments of the present invention.

The lubricating method and device for the yaw system of the wind turbine in the embodiments of the present invention control the yaw lubrication system to add grease to the yaw bearing only when the wind turbine is uncoupling or shutting down. Compared with the existing hard greasing solution, the problem of large power loss caused by lubricating and greasing under good working conditions such as stable wind direction can be effectively avoided, and the power generation of the wind turbine is improved.

Description of drawings

Other features, objects and advantages of the present invention will become more apparent upon reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar features.

FIG. 1 shows a schematic flowchart of a lubricating method for a yaw system of a wind turbine according to an embodiment of the present invention;

FIG. 2 shows a schematic diagram of a frame structure of a lubricating device for a yaw system of a wind turbine according to an embodiment of the present invention;

3 shows a schematic diagram of the frame structure of a lubricating device for a yaw system of a wind turbine according to another embodiment of the present invention;

FIG. 4 shows a structural diagram of an exemplary hardware architecture of a computing device that can implement a method and apparatus for lubricating a wind turbine yaw system according to an embodiment of the present invention.

Detailed ways

Features and exemplary embodiments of various aspects of the invention are described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is only intended to provide a better understanding of the present invention by illustrating examples of the invention. The present invention is in no way limited to any specific configurations and algorithms set forth below, but covers any modification, substitution and improvement of elements, components and algorithms without departing from the spirit of the invention. In the drawings and the following description, well-known structures and techniques have not been shown in order to avoid unnecessarily obscuring the present invention.

FIG. 1 shows a schematic flowchart of a method for lubricating a yaw system of a wind turbine according to an embodiment of the present invention. Specifically, the method may be controlled and executed by a main control system of the wind turbine. As shown in Figure 1, the lubrication method can mainly include the following steps:

Step S11 : in the current lubrication cycle, when the wind turbine is yaw uncoupling or shut down, the yaw lubrication system is controlled to add grease to the yaw bearing.

Step S12: Control the yaw lubricating system to stop adding grease to the yaw bearing when the wind generator set does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value.

For the wind turbine, if the wind direction is stable during the operation of the wind turbine, the yaw action of the yaw system will be less. In this case, if the machine is shut down for fatliquoring, due to the better wind conditions, it will have a greater impact on the power generation of the wind turbine, resulting in a greater loss of power generation.

In the embodiment of the present invention, in order to avoid the problem of large power loss of the generating set caused by relubrication under the condition of stable wind direction and less yaw action, the lubricating and regreasing conditions can be configured to determine that the wind turbine satisfies the preset lubrication conditions. Only control the yaw lubricating system to add grease to the yaw bearing once under the grease conditions.

In the embodiment of the present invention, the above-mentioned lubricating and regreasing conditions may be the case that the wind power generator set is yaw and uncoupling, or the case that the wind power generator set is shut down. That is, the yaw lubrication system is controlled to add grease to the yaw bearing only when the wind turbine is yaw uncoupling or shut down.

When the yaw system is yawed against the wind, if it is rotated in the same direction for many times, it will cause the cable to become entangled, strangled, or even twisted. Therefore, when the number of winding turns of the cable reaches the specified number of unwinding turns of the wind turbine, the yaw motor needs to be rotated in the opposite direction to perform yaw unwinding. Since the wind turbines are in a state of not generating electricity when the yaw is uncoated or the wind turbine is stopped, therefore, in the case of the yaw uncoupling of the wind turbine or the shutdown of the wind turbine, the yaw lubrication system is controlled to prevent the yaw bearing. Regreasing can not affect the power generation of the wind turbine, but also de-cable, which indirectly increases the power generation time of the wind turbine.

In the embodiment of the present invention, the lubricating method may further include:

When the number of times of lubricating grease in the current lubricating cycle reaches the target number, the yaw lubrication system is controlled to stop the lubricating of grease to the yaw bearing.

Wherein, the above-mentioned target number of times is the sum of the preset number of lubricating times in each lubricating cycle and the remaining unexecuted times of lubricating lubricating in the previous lubricating cycle.

That is, at the end of a lubrication cycle, if the remaining unexecuted times of grease lubrication in the lubrication cycle is greater than zero, the remaining unexecuted grease lubrication times of the lubrication cycle are accumulated to the next lubrication cycle.

In order to avoid that the number of times the wind turbine meets the preset lubricating and regreasing conditions in the current lubrication cycle, that is, the number of times the yaw lubrication system is controlled to grease the yaw bearing is less than the target number of grease lubrication in the current lubrication cycle, resulting in the failure of the lubrication cycle. The extreme working conditions that the target number of times has not been fully executed in the lubrication cycle occur. For example, in the current entire lubrication cycle, the wind speed has been high and relatively stable, and there is no shutdown of the wind turbine or the wind turbine is in the current cycle. There is no yaw and uncoupling. At this time, it is necessary to accumulate the remaining unexecuted grease times of the current lubrication cycle to the grease times of the next lubrication cycle, so that in the next lubrication cycle, according to the accumulated grease times, When the lubricating conditions are met, the yaw lubrication system is controlled to lubricate the yaw bearing to ensure that the total number of times the yaw bearing needs to be lubricated will not be changed and meet the lubricating requirements of the yaw system.

In the embodiment of the present invention, one lubricating cycle is an integer multiple of the preset minimum grease feeding cycle, and the number of grease feeding in one lubricating cycle is the ratio of the current lubricating cycle to the minimum grease feeding cycle.

The minimum relubrication interval refers to the length of the fixed time interval if the yaw bearing of the yaw system is greased once at a fixed time interval within a year. The lubricating cycle can be an integer multiple of the minimum lubricating cycle, that is, one lubricating cycle contains at least one lubricating cycle. For example, in a specific example, the lubrication period is set to be N times the minimum lubricating period. For example, when N=2, if the minimum lubricating period is 6 days, that is, 144 hours, the lubricating period is 288 hours. Theoretically, the number of times the yaw bearing needs to be greased is 2 times.

In practical applications, the analysis can be carried out according to the wind conditions at the location of the wind farm of the wind turbine. If the wind condition at the location of the wind farm is strong and relatively stable, the above N can be set relatively large. If the situation is unstable, the above N can be set relatively small.

In this embodiment of the present invention, determining the minimum relubrication period of the yaw bearing may include:

According to the grease speed of the yaw lubrication system and the time required for the yaw system to yaw the set angle, calculate the single grease amount of the yaw bearing;

According to the annual grease feeding amount and single grease feeding amount of the yaw bearing, the minimum grease feeding cycle is calculated.

For wind turbines, since the grease feeding speed of the yaw lubrication system is determined, when the single grease feeding time is determined, the single grease amount of the yaw lubrication system at the single grease feeding time can be determined. of. For example, if the time required for the yaw lubrication system to yaw the set angle (usually one cycle of yaw, that is, 360 degrees of yaw) is used as the single grease time of the yaw bearing, the single grease amount of the yaw lubrication system is The amount of grease at the desired time for the yaw lubrication system. The amount of grease required for the yaw bearing of the yaw system of the wind turbine for one year, that is, the annual amount of grease is generally fixed. The minimum grease feeding period of the yaw bearing is determined by the amount of secondary grease feeding. Specifically, the number of grease feeding required in one year can be obtained by dividing the annual grease feeding amount by the single grease feeding amount, which is divided by the number of grease feeding in one year. The minimum fatliquoring cycle can be obtained.

It can be seen that the number of times of lubricating grease in one lubricating cycle is the ratio of one lubricating cycle and the minimum lubricating cycle. The number of refills remaining in a lubrication cycle is equal to the difference between the number of refills in the lubrication cycle and the number of refills in that lubrication cycle.

In the embodiment of the present invention, in the case that the wind turbine generator set does not perform yaw decoupling and exits the shutdown because the wind speed is greater than the preset value, after the step of controlling the yaw lubrication system to stop the lubricating of the yaw bearing, it is also possible to Includes: Updating and recording the number of remaining unperformed greasings for the current lubrication cycle.

In the embodiment of the present invention, the lubricating method may further include:

When the preset duration of the current lubrication cycle is exceeded, the yaw lubricating system is controlled to stop lubricating the yaw bearing, and the remaining unexecuted times of lubricating the current lubricating cycle are updated and recorded.

In the embodiment of the present invention, the shutdown of the wind turbine is the shutdown when the wind speed is lower than the cut-in wind speed of the wind turbine after power generation is started, or the wind turbine enters shutdown from the grid-connected state.

When there is a problem with the wind turbine itself (such as equipment failure in the unit, etc.), which leads to shutdown, if the yaw lubrication system is controlled to grease the yaw bearing at this time, it may cause damage to the equipment of the wind turbine. Or other potential safety hazards occur. In order to avoid this problem, in the embodiment of the present invention, in the case of shutdown caused by the wind speed less than the cut-in wind speed of the wind turbine, the yaw lubricating system is controlled to perform one-time regreasing to the yaw bearing. , to avoid the potential safety hazards caused by lubricating grease.

In the embodiment of the present invention, the yaw lubrication is triggered to control the yaw lubrication system to the yaw bearing by controlling only when the wind turbine enters the shutdown state from the grid-connected state, that is, only the shutdown occurs after the fan starts to generate electricity. Carrying out one-time relubrication avoids the problem of excessive grease and oil seepage caused by multiple re-grease of the yaw bearing in a short period of time when the wind turbine is shut down several times in a short period of time.

In the embodiment of the present invention, in the case of the shutdown of the wind turbine, controlling the yaw lubrication system to add grease to the yaw bearing includes:

After the wind turbine stops, control the yaw system to perform the yaw uncoiling action;

In the process of controlling the yaw system to perform the yaw uncoiling action, the yaw lubricating system is controlled to add grease to the yaw bearing.

In the embodiment of the present invention, after the shutdown of the wind turbine is completed, the yaw system can be controlled to yaw a set angle (for example, one circle) in the direction of uncoiling, and while the yaw system is controlled to perform the yaw uncoiling action, the The yaw lubricating system greases the yaw bearing, so that the yaw bearing can be greased without affecting the power generation, and at the same time, the cable can be un-cabled, thereby increasing the next yaw of the wind turbine. The time interval of uncoiling reduces the time for yaw uncoiling, indirectly increases the power generation time of the wind turbine, and improves the power generation of the set.

In the embodiment of the present invention, controlling the yaw lubrication system to perform one-time grease lubrication to the yaw bearing may specifically include:

The yaw lubricating system is controlled to perform one-time grease feeding to the yaw bearing according to the single-shot grease amount.

In order to avoid the problem of too much grease and oil leakage caused by too much grease at one time, in the embodiment of the present invention, the yaw lubrication system is controlled to perform one-time grease feeding to the yaw bearing according to the amount of single grease feeding.

It is proved by statistics that through the lubricating method of the embodiment of the present invention, each wind turbine can generate an additional 496 kilowatt-hours (kWh) per year. If it is calculated with nearly 20,000 wind turbines, it can generate an additional 9.92 million kWh per year, effectively increasing the power generation of wind turbines.

Corresponding to the lubricating method shown in FIG. 1 , FIG. 2 shows a schematic structural diagram of a lubricating device 100 for a yaw system of a wind turbine according to an embodiment of the present invention. As shown in FIG. 2 , the lubricating device 100 may include a lubricating and greasing module 110 and a lubricating and greasing stop module 120 .

The lubricating and regreasing module 110 is used to control the yaw lubrication system to grease the yaw bearing when the wind turbine is yawed or stopped during the current lubrication cycle;

The lubricating and regreasing stop module 120 is used to control the yaw lubrication system to stop the yaw bearing from being greased when the wind generator set does not perform yaw uncoiling and exits the shutdown because the wind speed is greater than a preset value.

In the embodiment of the present invention, the lubricating and greasing stop module 120 is further configured to control the yaw lubrication system to stop the lubricating of the yaw bearing when the number of times of lubricating grease in the current lubrication cycle reaches the target number.

In the embodiment of the present invention, as shown in FIG. 3 , the target number of times is the sum of the preset number of times of lubricating grease in each lubricating cycle and the number of times of lubricating that has not been performed in the previous lubricating cycle; the lubricating device 100 further includes:

The remaining grease refueling times update module 130 is used to control the yaw lubrication system to stop grease lubrication to the yaw bearing when the wind generator set does not perform yaw uncoiling and exits shutdown due to the wind speed being greater than the preset value After that, update and record the number of remaining unperformed greasings for the current lubrication cycle.

In the embodiment of the present invention, one lubricating period is an integer multiple of the preset minimum lubricating period; the number of lubricating periods of one lubricating period is the ratio of the current lubricating period and the minimum lubricating period.

In the embodiment of the present invention, the shutdown of the wind turbine is the shutdown when the wind speed is lower than the cut-in wind speed of the wind turbine after power generation is started, or the wind turbine enters shutdown from the grid-connected state.

In the embodiment of the present invention, if the lubricating and greasing condition is the shutdown of the wind turbine, the lubricating and greasing module 120 is specifically used for:

After the wind turbine stops, control the yaw system to perform the yaw uncoiling action;

While controlling the yaw system to perform the yaw uncoupling action, the yaw lubrication system is controlled to re-grease the yaw bearing once.

In this embodiment of the present invention, the lubrication cycle determination module 110 is specifically configured to:

According to the grease speed of the yaw lubrication system and the time required for the yaw system to yaw the set angle, calculate the single grease amount of the yaw bearing;

According to the annual grease feeding amount and single grease feeding amount of the yaw bearing, the minimum grease feeding cycle is calculated.

In the embodiment of the present invention, the lubricating and greasing module 120 is specifically used for:

The yaw lubricating system is controlled to perform one-time grease feeding to the yaw bearing according to the single-shot grease amount.

It can be understood that the lubricating device 100 in the embodiment of the present invention may correspond to the lubricating method for the yaw system of the wind turbine according to the embodiment of the present invention, and the above-mentioned operations and/or functions of each module of the lubricating device 100 are for the purpose of For the sake of brevity, the corresponding procedures for realizing the lubrication method of each embodiment of the present invention will not be repeated here.

At least a part of the lubricating method and apparatus for a yaw system of a wind turbine according to an embodiment of the present invention described in conjunction with FIGS. 1 to 3 may be implemented by a computing device. FIG. 4 shows a schematic structural block diagram of a computing device according to an embodiment of the present invention. As shown in FIG. 4 , computing device 200 may include input device 201 , input interface 202 , processor 203 , memory 204 , output interface 205 , and output device 206 . The input interface 202, the processor 203, the memory 204, and the output interface 205 are connected to each other through the bus 210, and the input device 201 and the output device 206 are connected to the bus 210 through the input interface 202 and the output interface 205, respectively, and then to the computing device 200. other components are connected. Specifically, the input device 201 receives input information from the outside, and transmits the input information to the processor 203 through the input interface 202; the processor 203 processes the input information based on the computer-executable instructions stored in the memory 204 to generate output information, The output information is temporarily or permanently stored in the memory 204, and then transmitted to the output device 206 through the output interface 205; the output device 206 outputs the output information to the outside of the computing device 200 for the user to use.

That is, the computing device 200 shown in FIG. 4 may be implemented as a lubricating device for a wind turbine yaw system, which may include a memory 204 and a processor 203 . The memory 204 is used for storing a computer program, and the processor 203 is used for executing the computer program stored in the memory 204 to implement the lubricating method for the yaw system of the wind turbine in any of the above embodiments of the present invention.

An embodiment of the present invention also provides a computer-readable storage medium, where computer program instructions are stored in the storage medium. When the calculation, that is, the program instructions, is executed on a computer, the computer is made to execute any of the above-mentioned embodiments of the present invention. Lubrication method of wind turbine yaw system.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an application specific integrated circuit (ASIC), suitable firmware, a plug-in, a function card, or the like. When implemented in software, elements of the invention are programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted over a transmission medium or communication link by a data signal carried in a carrier wave. A "machine-readable medium" may include any medium that can store or transmit information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, and the like. The code segments may be downloaded via a computer network such as the Internet, an intranet, or the like.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element defined by the phrase "comprises" does not preclude the presence of additional identical elements in a process, method, article, or device that includes the element.

It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps may be performed in the order mentioned in the embodiments, or different from the order in the embodiments or several steps may be performed simultaneously.

The present invention may be embodied in other specific forms without departing from its spirit or essential characteristics. Accordingly, the present embodiments are to be considered in all respects as illustrative and not restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and falls within the meaning and equivalents of the claims. All changes within the scope are thus included in the scope of the invention.

Claims (15)

1. A lubricating method for a wind turbine yaw system, wherein the lubricating method comprises: In the current lubrication cycle, control the yaw lubrication system to add grease to the yaw bearing when the wind turbine is yawed or shut down; Control the yaw lubrication system to stop adding grease to the yaw bearing when the wind turbine does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value. 2. The lubricating method according to claim 1, wherein the lubricating method further comprises: When the number of times of lubricating grease in the current lubricating cycle reaches the target number, the yaw lubrication system is controlled to stop the lubricating of grease to the yaw bearing. 3. The lubricating method according to claim 2, wherein the target number of times is the sum of the number of times of grease refilling in each preset lubricating cycle and the number of times of regreasing that is not performed in the previous lubricating cycle; After the step of controlling the yaw lubricating system to stop lubricating the yaw bearing when the wind turbine does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value, the method further includes: Update and record the number of remaining unperformed greasings for the current lubrication cycle. The lubricating method according to claim 2, characterized in that, one lubricating period is an integer multiple of a preset minimum lubricating period; ratio. 5. The lubricating method according to claim 3, wherein the lubricating method further comprises: When the preset duration of the current lubrication cycle is exceeded, the yaw lubricating system is controlled to stop lubricating the yaw bearing, and the remaining unexecuted times of lubricating the current lubricating cycle are updated and recorded. 6. The lubricating method according to any one of claims 1-5, wherein the shutdown of the wind turbine is the shutdown when the wind speed is lower than the cut-in wind speed of the wind turbine after power generation is started, or the wind turbine The network state enters shutdown. 7. The lubricating method according to claim 1, characterized in that, under the condition that the wind turbine generator is shut down, controlling the yaw lubrication system to grease the yaw bearing, comprising: control the yaw system to perform a yaw uncoupling action after the wind turbine is stopped; In the process of controlling the yaw system to perform the yaw uncoiling action, the yaw lubricating system is controlled to add grease to the yaw bearing. 8. A lubricating device for a yaw system of a wind turbine, wherein the lubricating device comprises: The lubricating and regreasing module is used to control the yaw lubrication system to re-grease the yaw bearing when the wind turbine is yawed or shut down during the current lubrication cycle; The lubricating and regreasing stop module is used to control the yaw lubrication system to stop the yaw bearing from relubricating when the wind turbine does not perform yaw decoupling and exits shutdown because the wind speed is greater than the preset value. 9. The lubricating device according to claim 8, characterized in that, The lubricating and greasing stop module is also used to control the yaw lubrication system to stop the yaw bearing from being lubricated when the number of times of lubricating grease in the current lubricating cycle reaches the target number of times. 10 . The lubricating device according to claim 9 , wherein the target number of times is the sum of the preset number of times of lubricating grease in each lubricating cycle and the number of times of lubricating that has not been performed in the previous lubricating cycle; 10 . The lubricating device also includes: The module for updating the number of remaining grease refueling times is used to control the yaw lubrication system to stop grease lubrication to the yaw bearing under the condition that the wind turbine generator set does not perform yaw decoupling and exits shutdown due to the wind speed being greater than the preset value. After the step, update and record the number of remaining unperformed greasings for the current lubrication cycle. 11. The lubricating device of claim 10, wherein The module for updating the number of remaining lubricating times is also used to control the yaw lubricating system to stop lubricating the yaw bearing when the preset duration of the current lubricating cycle exceeds, and update and record the remaining unexecuted lubricating lubricating times of the current lubricating cycle. frequency. 12. The lubricating device according to any one of claims 8-11, characterized in that, one lubricating cycle is an integer multiple of a preset minimum relubrication cycle; The ratio of the stated minimum fatliquoring cycle. 13 . The lubricating device according to claim 12 , wherein the shutdown of the wind turbine is the shutdown when the wind speed is lower than the cut-in wind speed of the wind turbine after power generation is started, or the wind turbine enters shutdown from the grid-connected state. 14 . 14. A lubricating device for a yaw system of a wind turbine, characterized in that the lubricating device comprises a memory and a processor; the memory stores computer program code; The processor is configured to read the computer program code to run a computer program corresponding to the computer program code, so as to implement the lubrication method according to any one of claims 1 to 7. 15. A computer-readable storage medium, characterized in that the readable storage medium stores computer program instructions that, when the instructions are executed on a computer, cause the computer to execute any one of claims 1 to 7 Lubrication method described in item.

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