Lubricating control method, system and equipment for wind power variable pitch system and storage medium

Abstract

The invention provides a wind power variable pitch system lubrication control method, system and device and a storage medium. The wind power variable pitch system lubrication control method comprises the steps that the actual lubrication frequency and the target lubrication frequency of a variable pitch system in a single lubrication action period are determined, and when the actual lubrication frequency in the same lubrication action period is lower than the target lubrication frequency, the lubrication system conducts lubrication operation on a target position along with the action of the variable pitch system. And when the actual lubrication frequency is higher than the target lubrication frequency, the target lubrication operation is stopped, so that the lubrication operation of the lubrication system is closely linked with the working state of the variable pitch system, the lubrication operation is not controlled by taking a single lubrication period as a judgment basis any more, and main body lubrication is completed when the variable pitch system works. The purposes of saving lubricating grease, avoiding environmental pollution and achieving sufficient lubrication are achieved on the whole.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation control systems, and in particular to a wind power variable pitch system lubrication control method, system, equipment and storage medium. Background Art

[0002] In a wind turbine, the pitch system controls the speed and output power of the wind rotor by adjusting the blade angle to achieve safe and efficient operation of the wind turbine. The blade angle adjustment is driven by the bearings and gears of the pitch system. To ensure that the bearings and gears can work stably for a long time, they need to be fully lubricated.

[0003] The current method of lubricating the variable pitch bearings and gears is to add a fixed amount of grease at a fixed interval. The disadvantage is that this lubrication method does not take into account the operating status of the wind turbine, and often lubricates the variable pitch bearings and gears when they are stationary. When the variable pitch bearing is in a stationary state, it is difficult for the grease to enter the bearing, resulting in insufficient bearing lubrication or the grease being squeezed out of the sealing ring. When the variable pitch gear is in a stationary state, the grease gathers in a small area after injection and cannot fully lubricate all the tooth surfaces of the gear. Summary of the invention

[0004] In view of the above problems existing in the prior art, the present invention provides a wind turbine pitch system lubrication control method, system, equipment and storage medium to improve the existing technical problems of replenishing a fixed amount of lubricating grease at a fixed time without considering the operating state of the pitch bearings and gears, and static lubrication easily causing insufficient lubrication of bearings or gears and waste of lubricating grease.

[0005] To achieve the above-mentioned purpose and other related purposes, the first aspect of the present invention provides a wind turbine pitch system lubrication control method, which includes: determining the target number of lubrications that the pitch system needs to complete in a single lubrication action cycle. Recording the actual number of lubrications of the pitch system in a single lubrication action cycle. When the bearings and gears of the pitch system are in action, determining whether the actual number of lubrications is less than the target number of lubrications. If so, lubricate the bearings and gears of the pitch system; if not, do not lubricate the bearings and gears of the pitch system.

[0006] In one embodiment of the lubrication control method for a wind turbine pitch system of the present invention, determining the target number of lubrications that the pitch system needs to complete within a single lubrication action cycle includes: calculating the target number of lubrications that need to be completed within a single lubrication action cycle based on the total annual amount of lubricating grease, the lubrication action cycle, and the single amount of lubricating grease of the pitch system.

[0007] In one embodiment of the wind turbine pitch system lubrication control method of the present invention, recording the actual number of lubrication times of the pitch system in a single lubrication action cycle includes: setting a counter for the lubrication system, recording the number of actions in the lubrication system in a single lubrication cycle, and using it as the actual number of lubrication times.

[0008] In an embodiment of the wind turbine pitch control system lubrication control method of the present invention, the lubrication system includes a lubricating grease dispenser, and the lubricating grease dispenser is communicatively connected to the counter.

[0009] In one embodiment of the lubrication control method for a wind turbine pitch system of the present invention, it also includes a process for determining whether the pitch system is in action. The process for determining whether the pitch system is in action includes: determining the target position of the blade and the current position of the blade, calculating the actual blade position deviation threshold of the pitch system, and if the actual blade position deviation threshold is greater than the set blade position deviation threshold, determining that the pitch system is in action.

[0010] In one embodiment of the wind turbine pitch system lubrication control method of the present invention, it also includes a process of judging whether the pitch system needs additional lubrication at the end of a lubrication action cycle. The process of judging whether the pitch system needs additional lubrication includes: at the end of a lubrication action cycle, calculating the ratio of the actual number of lubrication times to the target number of lubrication times as the actual minimum lubrication coefficient. If the actual minimum lubrication coefficient is less than or equal to the target minimum lubrication coefficient, the lubrication system performs additional lubrication operations on the pitch system. If the actual minimum lubrication coefficient is greater than the target minimum lubrication coefficient, the lubrication system no longer performs additional lubrication operations on the pitch system.

[0011] In one embodiment of the lubrication control method for a wind turbine pitch system of the present invention, a method for determining the amount of lubrication for the lubrication system to replenish the pitch system is as follows: calculating the difference between the target minimum lubrication amount and the actual lubrication amount as the amount of lubrication for the centralized replenishment of the lubrication.

[0012] In a second aspect, the present invention provides a wind turbine pitch control system lubrication control system, comprising:

[0013] The lubrication calculation module is used to determine the target number of lubrications that the variable pitch system needs to complete within a single lubrication action cycle.

[0014] The lubrication detection module is used to record the actual number of lubrication times of the variable pitch system in a single lubrication action cycle.

[0015] The lubrication control module is used to determine whether the actual lubrication times are less than the target lubrication times when the bearings and gears of the pitch system are in motion. If so, lubrication is performed on the bearings and gears of the pitch system; if not, no lubrication is performed on the bearings and gears of the pitch system.

[0016] In a third aspect, the present invention provides a wind turbine pitch system lubrication control device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned wind turbine pitch system lubrication control method when executing the computer program.

[0017] In a fourth aspect, the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by a processor, the steps of the above-mentioned wind turbine pitch system lubrication control method are implemented.

[0018] In the lubrication control method, system, equipment and storage medium of the wind turbine pitch system of the present invention, the actual lubrication times and target lubrication times of the pitch system in a single lubrication action cycle are determined. When the actual lubrication times in the same lubrication action cycle are lower than the target lubrication times, the lubrication system lubricates the pitch bearings and gears as the pitch system operates until the actual lubrication times are not lower than the target lubrication times, and then the target lubrication operation is stopped, thereby closely linking the target lubrication operation of the lubrication system with the working state of the pitch system, and no longer controlling the lubrication operation based on a single lubrication cycle as the judgment basis. The main body lubrication is completed when the pitch system is working, thereby achieving the overall purpose of saving lubricating grease, avoiding environmental pollution and achieving sufficient lubrication. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other embodiments can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a flow chart of the lubrication control method of the wind turbine pitch control system of the present invention;

[0021] Figure 2 This is a flow chart of centralized lubrication replenishment in the lubrication control method for a wind turbine pitch control system of the present invention. DETAILED DESCRIPTION

[0022] The following is an explanation of the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the features in the following embodiments and the embodiments can be combined with each other without conflict. It should also be understood that the terms used in the embodiments of the present invention are intended to describe specific embodiments, rather than to limit the scope of protection of the present invention. The test methods for which specific conditions are not specified in the following examples are usually carried out under conventional conditions or according to the conditions recommended by the manufacturers.

[0023] When numerical ranges are given in the embodiments, it should be understood that unless otherwise specified in the present invention, both endpoints of each numerical range and any value between the two endpoints can be selected. Unless otherwise defined, all technical and scientific terms used in the present invention are familiar to those skilled in the art and the description of the present invention, and any method, device and material of the prior art similar or equivalent to the method, device and material in the embodiments of the present invention can also be used to implement the present invention.

[0024] It should be noted that the terms such as "upper", "lower", "left", "right", "middle" and "one" etc. used in this specification are only for the convenience of description and are not intended to limit the scope of implementation of the present invention. Changes or adjustments to their relative relationships, without substantially changing the technical content, should also be regarded as the scope of implementation of the present invention.

[0025] The variable pitch system is the core component of the wind turbine generator set, which is mainly responsible for dynamically adjusting the pitch angle of the wind turbine blades to ensure the power balance of the wind turbine generator set above the rated wind speed, and to ensure the overall safety of the wind turbine generator set through pneumatic braking under extreme weather conditions. The variable pitch system includes structures such as a variable pitch motor, a variable pitch reducer, a lubrication system, a variable pitch bearing and a gear. Its structural composition and connection relationship are well known in the wind power industry and have a wide range of applications. The existing structure can be referred to. The present invention only provides a control method for the parts of the variable pitch system that need to be lubricated, that is, the variable pitch bearing and the gear to achieve lubrication by the lubrication system.

[0026] To solve the technical problem that the existing lubrication system uses a fixed amount of lubricating grease to replenish the variable pitch system at a fixed time, the parts to be lubricated cannot be fully lubricated. Figure 1 to Figure 2The present invention provides a wind turbine pitch system lubrication control method, system, equipment and storage medium. By closely linking the lubrication operation of the lubrication system with the working state of the pitch system, the main body lubrication is completed when the pitch system is working, so as to achieve the purpose of overall full lubrication and saving lubricating grease.

[0027] See also Figure 1 to Figure 2 In a first aspect, the present invention provides a wind turbine pitch system lubrication control method, which is used to realize the control of the lubrication system on the pitch bearings and gears of the pitch system. It should be noted that the lubrication system in this embodiment is a system for injecting lubricating grease into the pitch bearings and gears to ensure the long-term stable operation of the pitch system, rather than a lubrication system for the entire wind turbine generator set. In this embodiment, the pitch system is an electric pitch system, but in other embodiments, the pitch system may also be a hydraulic pitch system.

[0028] See also Figure 1 The wind turbine pitch control system lubrication control method comprises the following steps:

[0029] First, determine the target number of lubrications k that the pitch system needs to complete within a single lubrication cycle T. The target number of lubrications k is the number of times the lubrication system theoretically needs to inject lubricating grease into the pitch bearings and gears for lubrication operations within a single lubrication cycle T. The lubrication cycle T is the time interval between two consecutive lubrications set based on the design parameters, operating conditions and maintenance strategies of the wind turbine, rather than the time interval between two consecutive lubrication operations of the lubrication system within a single lubrication cycle T.

[0030] Record the actual number of lubrications p of the variable pitch system in a single lubrication action cycle T. The actual number of lubrications p is the number of times the variable pitch system is lubricated in the lubrication action cycle T, which means the number of times the variable pitch system is at least actuated in the lubrication action cycle T. Specifically, from the beginning to the end of a single complete lubrication action cycle T, if the lubrication system is actuated once, that is, the variable pitch bearing and gear are lubricated once, then the actual number of lubrications p is incremented by one until the end of the lubrication action cycle T. When entering the next lubrication action cycle T, the actual number of lubrications p is reset to zero and recorded again.

[0031] During a lubrication action cycle T, when the variable pitch system is in action, it is determined whether the actual number of lubrications p is less than the target number of lubrications k. If the actual number of lubrications p is less than the target number of lubrications k, the lubrication system performs the target lubrication operation. Similarly, during a lubrication action cycle T, when the actual number of lubrications p is greater than or equal to the target number of lubrications k, the lubrication system no longer performs the target lubrication operation on the variable pitch system. Specifically, the working state of the variable pitch system is combined with the lubrication operation of the lubrication system on the variable pitch bearings and gears. If the actual number of lubrications p is less than the set target number of lubrications k during the lubrication action cycle T, the lubrication system lubricates when the variable pitch bearings and gears are in action, ensuring that the lubricating grease is effectively brought into the working area when the components are moving, thereby improving the lubrication efficiency. At the same time, lubrication according to the working state can reduce the aggregation and dripping of lubricating grease caused by lubrication when the components are stationary, as well as the difficulty in uniform distribution, which leads to environmental pollution and poor lubrication effect. If within the lubrication action cycle T, the actual number of lubrication times p is equal to or greater than the set target lubrication number k, it means that within the cycle, the pitch system has more pitch changes, and lubricating grease is injected during each pitch change. The pitch bearings and gears are sufficiently lubricated, and no lubrication is required within the cycle to avoid excessive lubrication and waste of lubricating grease.

[0032] See also Figure 1 In an embodiment of the wind turbine pitch control system lubrication control method of the present invention, the method for determining the target number of lubrication times k that the pitch system needs to complete within a single lubrication action cycle T is:

[0033] Determine the total annual lubricant quantity M, lubrication action cycle T, and single lubricant quantity n of the variable pitch system, wherein the total annual lubricant quantity M refers to the total amount of lubricant required for the variable pitch bearings and gears of the variable pitch system within one year to ensure stable operation and extend their service life, and the single lubricant quantity n refers to the amount of grease required for the lubrication system to complete a lubricant injection into the variable pitch system within a single lubrication action cycle T. Those skilled in the art can determine the total annual lubricant quantity M, lubrication action cycle T, and single lubricant quantity n by comprehensively considering the technical specifications of the wind turbine, the manufacturer's instruction manual, on-site operating experience, and possible environmental impacts, thereby ensuring that the variable pitch system is effectively lubricated, thereby ensuring the stable operation of the wind turbine and extending the service life of the equipment. Furthermore, the target number of lubrications k required to be completed within a single lubrication action cycle T is calculated through these variables. Specifically, the number of lubrication action cycles T within a year is determined based on the total amount of lubricating grease M, the number of days in a year (taking 365 days as an example) and the lubrication action cycle T, and then the amount of periodic lubricating grease N consumed within a single lubrication action cycle T is determined. The target number of lubrications k within a single lubrication action cycle T is determined based on the periodic lubricating grease amount N divided by the single lubricating grease amount n, that is, the calculation formula is k=M / (365 / T) / n. However, it should be noted that in other embodiments, the method for determining the target number of lubrications k within a single lubrication action cycle T can also be determined based on experience or other variable factors, and is not limited to the confirmation method and variable parameters described in this embodiment.

[0034] See also Figure 1 In one embodiment of the lubrication control method for the wind turbine pitch system of the present invention, the method for recording the actual number of lubrication times p of the pitch system in a single lubrication action cycle T is: set a counter for the lubrication system, record the number of actions in the lubrication system in a single lubrication cycle T, and use it as the actual number of lubrication times p. Specifically, when the counter counts once, it means that the lubrication system lubricates the pitch bearing and gear once, and it also means that the working state of the pitch bearing and gear changes once. Furthermore, in order to ensure that the counter can count more accurately and avoid counting interference caused by the pitch system lubricating other lubrication parts, the lubrication system includes a lubricating grease dispenser, which is communicatively connected to the counter, and the lubricating grease dispenser is used to distribute lubricating grease to the pitch bearing and gear. It should be noted that the counter can be any suitable type of monitoring device that records the number of actions of the lubricating grease dispenser, so as to monitor and record the number of times the lubricating grease dispenser lubricates the pitch bearing and gear within a certain period.

[0035] In one embodiment of the lubrication control method for a wind turbine pitch system of the present invention, since within a lubrication action cycle T, when the actual number of lubrication times p is less than the target number of lubrication times k, the increase in the value of the actual number of lubrication times p is closely related to whether the pitch system is in action, it is also necessary to determine whether the pitch system is in action. The process of determining whether the pitch system is in action includes: calculating the actual blade position deviation threshold of the pitch system, and if the actual blade position deviation threshold is greater than the set blade position deviation threshold Rs, the pitch system is in action. Specifically: determine the blade target position Rt and the blade current position R, and calculate the difference between the two as the absolute value of the actual blade position deviation threshold, that is, ABS (Rt-R). It should be noted that the ABS function represents taking the absolute value. If the absolute value of the actual blade position deviation threshold is greater than the set blade position deviation threshold Rs, the pitch system is in action, that is, ABS (Rt-R)>Rs. Otherwise, the pitch system does not act, that is, ABS (Rt-R) ≤ Rs.

[0036] See also Figure 2 In an embodiment of the wind turbine pitch control system lubrication control method of the present invention, based on the target lubrication operation of the lubrication system associated with the action of the pitch bearing and the pitch gear described in the above embodiment, if the pitch action of the pitch system is small in the cycle, and the number of linkage lubrication operations with the lubrication system, that is, the actual number of lubrication operations p, is low, it means that the lubrication amount in the cycle is insufficient and concentrated lubrication is required. The specific judgment method is:

[0037] At the end of a lubrication action cycle T, the actual minimum lubrication coefficient Y is determined. If the actual minimum lubrication coefficient Y is less than or equal to the target minimum lubrication coefficient γ, the lubrication system needs to centrally replenish lubricating grease to the variable pitch bearings and gears once, so as to achieve the minimum lubrication quantity requirement of the target lubrication position within the lubrication action cycle T. Similarly, at the end of a lubrication action cycle, if the actual minimum lubrication coefficient Y is greater than the target minimum lubrication coefficient γ, the lubrication system will no longer perform the target lubrication operation. That is, if the actual minimum lubrication coefficient Y is greater than the target minimum lubrication coefficient γ, it means that although the lubrication quantity of the variable pitch bearings and gears in this lubrication cycle has not reached the theoretically optimal level, it has reached the minimum lubrication quantity requirement based on the minimum lubrication coefficient γ. In order to avoid waste of lubricating grease, there is no need to re-lubricate the target position within this cycle.

[0038] Furthermore, in an embodiment of the wind turbine pitch control system lubrication control method of the present invention, the method for determining the actual minimum lubrication coefficient Y is to calculate the ratio of the actual number of lubrication times p to the target number of lubrication times k in a lubrication action cycle T at the end of the cycle as the actual minimum lubrication coefficient Y, that is, Y=p / k. By comparing the actual minimum lubrication coefficient Y with the target minimum lubrication coefficient γ, it is determined whether centralized lubrication is required, thereby avoiding the need for centralized lubrication when the pitch system has few actions.

[0039] Furthermore, in one embodiment of the lubrication control method for the wind turbine pitch system of the present invention, when centralized relubrication is required, it is necessary to determine the relubrication amount of the lubricating grease of the lubrication system to centrally relubricate, while meeting the minimum lubrication requirement and avoiding waste. The specific method is: calculate the difference between the target minimum lubrication amount and the actual lubrication amount as the relubrication amount of the centralized relubrication grease. Specifically, the target minimum lubrication amount is the product of the target lubrication times k, the target minimum lubrication coefficient γ and the single lubrication amount n, that is, the target minimum lubrication amount = k×γ×n. The actual lubrication amount is the product of the actual lubrication times p and the single lubrication amount n, that is, the actual lubrication amount = p×n. Therefore, the calculation formula for the relubrication amount is: relubrication amount = (k×γ-p)×n.

[0040] In the wind turbine pitch system lubrication control method of the present invention, the target lubrication operation of the lubrication system is closely linked to the working state of the pitch system. The lubrication operation is no longer controlled based on a single lubrication cycle. The main body lubrication is completed when the pitch system is working, which achieves the overall effect of saving lubricating grease, avoiding environmental pollution and achieving sufficient lubrication. At the same time, if the pitch system has a small number of pitch operations in the same lubrication action cycle, resulting in a small number of actual lubrication times, a centralized lubrication judgment method is used to centrally replenish the lubricating grease for the pitch system. This solves the technical problem of replenishing a fixed amount of lubricating grease at a fixed time, which easily causes insufficient lubrication of bearings or gears and waste of lubricating grease.

[0041] In some embodiments, the present invention provides a wind turbine pitch system lubrication control system, which corresponds one-to-one to the wind turbine pitch system lubrication control method in the above embodiments.

[0042] The wind turbine pitch control system lubrication control system includes a lubrication calculation module, a lubrication detection module and a lubrication control module. The detailed description of each functional module is as follows:

[0043] The lubrication calculation module is used to determine the target number of lubrication times k that the variable pitch system needs to complete within a single lubrication action cycle T.

[0044] The lubrication detection module is used to record the actual number of lubrication times p of the variable pitch system within a single lubrication action cycle T.

[0045] The lubrication control module is used to determine whether the actual lubrication times are less than the target lubrication times when the bearings and gears of the pitch system are in motion.

[0046] In one embodiment, the lubrication calculation module is specifically used to:

[0047] According to the total annual lubricating grease M, lubrication action cycle T and single lubrication grease amount n of the variable pitch system, the target number of lubrication times k that need to be completed within a single lubrication action cycle T is calculated.

[0048] In one embodiment, the lubrication detection module is specifically used to:

[0049] A counter is set for the lubrication system to record the number of actions in the lubrication system in a single lubrication cycle T and use it as the actual number of lubrication times p.

[0050] For the specific limitations of the wind turbine pitch system lubrication control system, please refer to the limitations of the wind turbine pitch system lubrication control method above, which will not be repeated here. Each module in the above-mentioned wind turbine pitch system lubrication control system can be implemented in whole or in part through software, hardware and a combination thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0051] In one embodiment, a computer device is provided, which includes a processor, a memory, a network interface, a display screen, and an input device connected through a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external server through a network connection. When the computer program is executed by the processor, the functions or steps of a wind turbine pitch control system lubrication control method are implemented.

[0052] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the following steps when executing the computer program:

[0053] Determine the target number of lubrication times k that the pitch system needs to complete within a single lubrication action cycle T.

[0054] Record the actual number of lubrication times p of the pitch system within a single lubrication action cycle T.

[0055] When the bearings and gears of the pitch system are in motion, it is determined whether the actual lubrication times p are less than the target lubrication times k.

[0056] If so, lubricate the bearings and gears of the pitch system.

[0057] If not, no lubrication work is performed on the bearings and gears of the pitch system.

[0058] In one embodiment, a computer readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

[0059] Determine the target number of lubrication times k that the pitch system needs to complete within a single lubrication action cycle T.

[0060] Record the actual number of lubrication times p of the pitch system within a single lubrication action cycle T.

[0061] When the bearings and gears of the pitch system are in motion, it is determined whether the actual lubrication times are less than the target lubrication times.

[0062] If yes, lubrication is performed on the bearings and gears of the pitch system. If no, lubrication is not performed on the bearings and gears of the pitch system.

[0063] It should be noted that the above functions or steps that can be implemented by the computer-readable storage medium or computer device can refer to the relevant descriptions on the server side and the client side in the aforementioned method embodiment. To avoid repetition, they will not be described one by one here.

[0064] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in the present application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. As an illustration and not limitation, RAM is available in many forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink), DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0065] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above.

[0066] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A wind turbine pitch control system lubrication control method, characterized in that: include: Determine the target number of lubrications that the pitch system needs to complete within a single lubrication cycle; Record the actual number of lubrication times of the pitch system in a single lubrication cycle; When the bearings and gears of the pitch system are in motion, determining whether the actual lubrication times are less than the target lubrication times; If so, the bearings and gears of the pitch system are lubricated; if not, the bearings and gears of the pitch system are not lubricated.

2. The wind turbine pitch control system lubrication control method according to claim 1, characterized in that: Determine the target number of lubrications that the pitch system needs to complete in a single lubrication cycle including: Based on the total annual lubricating grease amount, lubrication action cycle and single lubrication grease amount of the variable pitch system, the target number of lubrication times that need to be completed in a single lubrication action cycle is calculated.

3. The wind turbine pitch control system lubrication control method according to claim 1, characterized in that: The actual number of lubrications of the pitch system in a single lubrication cycle is recorded as follows: A counter is set for the lubrication system to record the number of actions in the lubrication system in a single lubrication cycle and use it as the actual number of lubrications.

4. The wind turbine pitch control system lubrication control method according to claim 3, characterized in that: The lubrication system includes a lubricating grease dispenser, and the lubricating grease dispenser is communicatively connected to the counter.

5. The wind turbine pitch control system lubrication control method according to claim 1, characterized in that: It also includes a process for determining whether the variable pitch system is in action, and the process for determining whether the variable pitch system is in action includes: determining the target position of the blade and the current position of the blade, and calculating the difference between the two as the actual blade position deviation threshold; if the actual blade position deviation threshold is greater than the set blade position deviation threshold, it is determined that the variable pitch system is in action.

6. The wind turbine pitch control system lubrication control method according to claim 1, characterized in that: It also includes a process of judging whether the variable pitch system needs to be supplemented with lubrication at the end of a lubrication action cycle; the process of judging whether the variable pitch system needs to be supplemented with lubrication includes: at the end of a lubrication action cycle, calculating the ratio of the actual number of lubrication times to the target number of lubrication times as the actual minimum lubrication coefficient; If the actual minimum lubrication coefficient is less than or equal to the target minimum lubrication coefficient, the lubrication system performs supplementary lubrication operations on the pitch system; If the actual minimum lubrication coefficient is greater than the target minimum lubrication coefficient, the lubrication system will no longer perform supplementary lubrication operations on the pitch system.

7. The wind turbine pitch control system lubrication control method according to claim 6, characterized in that: The method for determining the amount of lubrication for the centrally replenished lubricating grease of the variable pitch system by the lubrication system is: calculating the difference between the target minimum lubrication amount and the actual completed lubrication amount as the amount of lubrication for the centrally replenished lubricating grease.

8. A wind turbine pitch control system lubrication control system, characterized in that: include: A lubrication calculation module is used to determine the target number of lubrications that the pitch system needs to complete within a single lubrication action cycle; A lubrication detection module is used to record the actual number of lubrications of the pitch system in a single lubrication action cycle; A lubrication control module, used for determining whether the actual lubrication times are less than the target lubrication times when the bearings and gears of the pitch system are in motion; If yes, lubricate the bearings and gears of the pitch system; If not, no lubrication operation is performed on the bearings and gears of the pitch system.

9. A computer device, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is connected to the memory, and the processor is used to execute the computer program stored in the memory, so that the computer device executes the wind turbine pitch control system lubrication control method according to any one of claims 1 to 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the wind turbine pitch control system lubrication control method according to any one of claims 1 to 7 are implemented.

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