Power-increasing and efficiency-increasing control method and device for wind generating set, terminal and medium

Abstract

The embodiment of the invention relates to the field of wind power generation, and provides a power increasing and efficiency increasing control method and device of a wind generating set, a terminal and a medium. Obtaining a first torque coefficient determined by the target wind generating set according to a historical torque coefficient set; determining a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller; determining a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller; and the target pitch angle and the target torque coefficient are adopted to control the target wind generating set, the accuracy of controlling the wind generating set is improved, and then the power generation power and the power generation efficiency of the wind generating set are improved.

Description

Technical Field

[0001] The present application relates to the technical field of wind power generation, and in particular to a method, device, terminal and medium for increasing power and improving efficiency of a wind power generator set. Background Art

[0002] As an important part of clean energy, wind power generation is highly valued by the country. In the existing control of wind turbines, the pitch angle issued by the controller is usually used for direct control. When determining the pitch angle, the controller usually only directly determines the pitch angle based on environmental factors, the operating status of the wind turbine, etc. Due to the influence of factors such as the changes in the aerodynamic characteristics of the blade surface during the operation of the wind turbine, the accuracy of controlling the wind turbine by directly determining the pitch angle based on environmental factors, the operating status of the wind turbine, etc. is reduced. Summary of the invention

[0003] The embodiments of the present application provide a method, device, terminal and medium for increasing power and improving efficiency of a wind turbine generator set, which can control the wind turbine generator set in combination with the pitch angle and torque coefficient determined according to the historical power set, thereby improving the accuracy of controlling the wind turbine generator set, and further improving the power generation power and power generation efficiency of the wind turbine generator set.

[0004] A first aspect of an embodiment of the present application provides a method for controlling power increase and efficiency improvement of a wind turbine generator set, the method comprising:

[0005] Acquire a first pitch angle determined by the target wind turbine generator set according to a historical power set, and acquire a first torque coefficient determined by the target wind turbine generator set according to a historical torque coefficient set;

[0006] Determining a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller;

[0007] Determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller;

[0008] The target wind turbine generator set is controlled using the target pitch angle and the target torque coefficient.

[0009] In this example, a first pitch angle determined by the target wind turbine generator set according to a historical power set is obtained, and a first torque coefficient determined by the target wind turbine generator set according to a historical torque coefficient set is obtained, the target pitch angle of the target generator set is determined according to the first pitch angle and a first reference pitch angle sent by a controller, and the target torque coefficient of the target generator set is determined according to the first torque coefficient and a first reference torque coefficient sent by the controller, and the target wind turbine generator set is controlled by using the target pitch angle and the target torque coefficient. Therefore, the wind turbine generator set can be controlled in combination with the pitch angle and the torque coefficient determined according to the historical power set, thereby improving the accuracy of controlling the wind turbine generator set, thereby improving the power generation power and power generation efficiency of the wind turbine generator set.

[0010] A second aspect of an embodiment of the present application provides a power increase and efficiency improvement control device for a wind turbine generator set, the device comprising:

[0011] an acquisition unit, configured to acquire a first pitch angle of a target wind turbine generator set and a first torque coefficient of the target wind turbine generator set;

[0012] a first determining unit, configured to determine a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller;

[0013] a second determining unit, configured to determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller;

[0014] A control unit is used to control the target wind turbine generator set by using the target pitch angle and the target torque coefficient.

[0015] A third aspect of an embodiment of the present application provides a terminal, comprising a processor, an input device, an output device and a memory, wherein the processor, input device, output device and memory are interconnected, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the step instructions in the first aspect of the embodiment of the present application.

[0016] The fourth aspect of the embodiments of the present application provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described in the first aspect of the embodiments of the present application.

[0017] A fifth aspect of the embodiments of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the first aspect of the embodiments of the present application. The computer program product may be a software installation package. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application 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 described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A flow chart of a method for increasing power and improving efficiency of a wind turbine generator set is provided for an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a terminal provided in an embodiment of the present application;

[0021] Figure 3 A structural schematic diagram of a power increase and efficiency improvement control device for a wind turbine generator set is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0023] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0024] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0025] In order to better understand the power-increasing and efficiency-improving control method of a wind turbine generator set provided in an embodiment of the present application, the power-increasing and efficiency-improving control method applied to the wind turbine generator set is briefly introduced below. The wind farm intelligent control optimization system involved in the power-increasing and efficiency-improving control method of the wind turbine generator set uses advanced technologies such as big data and artificial intelligence to collect the operating data of the wind turbine generator set in real time, and to model and analyze the power generation characteristics, identify the optimal pitch angle and the optimal torque coefficient, and feed back the identified optimal control value to the main control system to realize the intelligent optimization control of the wind turbine generator set. According to the actual operating conditions of each unit, the unit is optimized for variable pitch optimization and blade tip speed ratio optimization tuning respectively. And continuously obtain historical data from the wind turbine main control system for model training and self-learning tuning, and output the optimization control results to the main control system for real-time control, realizing the closed-loop control of "measurement-optimization-control-feedback".

[0026] See also Figure 1 , Figure 1 The present invention provides a flow chart of a method for increasing power and improving efficiency of a wind turbine generator set. Figure 1 As shown, the method includes:

[0027] 101. Obtain a first pitch angle determined by a target wind turbine generator set according to a historical power set, and obtain a first torque coefficient determined by the target wind turbine generator set according to a historical torque coefficient set.

[0028] Wherein, when determining the first pitch angle, it can be determined by the following method:

[0029] A1. Obtaining a historical power set of the target wind turbine generator set;

[0030] A2. extracting the superimposed pitch angle of the historical pitch angle corresponding to the maximum historical power in the historical power set to obtain a first superimposed pitch angle;

[0031] A3. Performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set;

[0032] A4. Determine a target operating power from the operating power set according to the maximum historical power;

[0033] A5. Determine the second superimposed pitch angle corresponding to the target operating power as the first pitch angle.

[0034] Specifically, the historical power set may include a historical power set of the target wind turbine generator set within two months from the current time. For example, the operating power may be determined as an element in the historical power set by recording the pitch angle each time the target wind turbine generator set is controlled and the operating power corresponding to the pitch angle.

[0035] The preset angle step is set by empirical value or historical data, for example, 0.1 degree.

[0036] A method for performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set, comprising:

[0037] A31, receiving a second reference pitch angle sent by a controller;

[0038] A32. Determine a reference pitch angle set according to the second reference pitch angle, the preset angle step and the preset safe operation pitch angle interval;

[0039] A33. Control the target wind turbine generator set to operate according to the pitch angle in the reference pitch angle set to obtain an operating power set.

[0040] The second reference pitch angle may be a pitch angle sent by a controller of a general target wind turbine generator set. The preset safe operation pitch angle interval is determined by safe operation requirements. Specifically, it may be determined according to the load of the target wind turbine generator set.

[0041] Specifically, a preset angle step is superimposed on the second reference pitch angle received each time to obtain the reference pitch angle. After the reference pitch angle is determined each time, the reference pitch angle is used for operation, so that the corresponding operation power can be obtained.

[0042] The method for determining the target operating power from the operating power set according to the maximum historical power can be: determining the operating power in the operating power set that is closest to the maximum historical power as the target operating power. Specifically, it can be understood that the operating power with the smallest absolute value of the difference between the operating power and the maximum historical power is determined as the target operating power.

[0043] Specifically, the method for obtaining the first torque coefficient determined by the target wind turbine generator set according to the historical torque coefficient set may refer to the method for obtaining the first pitch angle in the aforementioned embodiment, which will not be described in detail here.

[0044] 102. Determine a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller.

[0045] Specifically, a method for determining a target pitch angle of a target generator set according to the first pitch angle and a first reference pitch angle sent by a controller includes:

[0046] A first weight corresponding to the first pitch angle is obtained, and a second weight corresponding to the first reference pitch angle is obtained; and a weighted operation is performed on the first pitch angle and the first reference pitch angle using the first weight and the second weight to obtain the target pitch angle.

[0047] The first weight and the second weight may be pre-set weights. A general weight calculation method may be used for weight calculation to obtain a target pitch angle.

[0048] 103. Determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller.

[0049] In a possible implementation, a method for determining a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller includes:

[0050] Obtain a third weight corresponding to the first torque coefficient, and obtain a fourth weight corresponding to the first reference torque coefficient; use the third weight and the fourth weight to perform weighted operation on the first torque coefficient and the first reference torque coefficient to obtain the target torque coefficient.

[0051] The third weight and the fourth weight may be pre-set weights. A general weight calculation method may be used for weight calculation to obtain the target torque coefficient.

[0052] 104. Use the target pitch angle and the target torque coefficient to control the target wind turbine generator set.

[0053] A general control method may be adopted to control the target wind turbine generator set using the target pitch angle and the target torque coefficient.

[0054] In this example, a first pitch angle determined by the target wind turbine generator set according to a historical power set is obtained, and a first torque coefficient determined by the target wind turbine generator set according to a historical torque coefficient set is obtained, the target pitch angle of the target generator set is determined according to the first pitch angle and a first reference pitch angle sent by a controller, and the target torque coefficient of the target generator set is determined according to the first torque coefficient and a first reference torque coefficient sent by the controller, and the target wind turbine generator set is controlled by using the target pitch angle and the target torque coefficient. Therefore, the wind turbine generator set can be controlled in combination with the pitch angle and the torque coefficient determined according to the historical power set, thereby improving the accuracy of controlling the wind turbine generator set, thereby improving the power generation power and power generation efficiency of the wind turbine generator set.

[0055] In a specific embodiment, the present application also provides another method for controlling power increase and efficiency improvement of a wind turbine generator set, specifically:

[0056] The intelligent control optimization of wind farms uses artificial intelligence and active exploration technology to establish a wind turbine control optimization model, and optimizes the pitch and tip speed ratio of each unit according to the operating conditions of each unit.

[0057] The torque control coefficient of the wind turbine is calculated by the aerodynamic characteristics of the wind turbine. P The blade tip speed ratio torque coefficient under low wind speed conditions can be determined by taking into account factors such as the rotor radius and air density. When the wind speed changes, the rotor angular velocity ω is controlled by adjusting the generator torque to make the rotor tip speed ratio λ opt Keeping the optimal tip speed ratio unchanged can ensure that the wind turbine has the maximum wind energy capture coefficient C P(max) This enables maximum power tracking.

[0058]

[0059] Among them, N is the transmission ratio of the gearbox, R is the radius of the wind wheel, ρ is the current air density, and the maximum wind energy capture coefficient C is P(max) , wind wheel tip speed ratio λ opt

[0060] During the manufacturing process of blades, there may be deviations in the marking of the optimal pitch angle "zero position", deviations in the calibration of the blade "zero position" during commissioning, and changes in the aerodynamic characteristics of the blade surface during long-term operation of the unit. These factors will cause the wind turbine to be unable to achieve the maximum wind energy capture coefficient C. P In the actual control strategy, the torque coefficient K in the wind turbine main control system is opt The value remains basically constant.

[0061] The optimal pitch angle optimization function adds small disturbances of variable pitch control during the operation of the unit and records the operating data during the disturbance. By analyzing the operating data during the disturbance, the actual optimal pitch angle of the wind turbine is identified. Based on the premise of controlling the load safety, the optimal pitch angle is optimized during the operation of the unit to achieve the purpose of improving power and efficiency.

[0062] The optimization of the optimal pitch angle mainly conducts statistical analysis on the "pitch angle and corresponding power number" data of the first two months of the unit, and selects the superimposed pitch angle Pith1 at the moment of maximum power. Then the unit performs small-angle pitch control (i.e. active small-angle disturbance learning). Each pitch change is superimposed on the angle given by the controller by 0.1°, and each angle lasts for 60 minutes until the blade superimposes -0.5° (the minimum blade angle within the safety range calculated by the load). The power corresponding to the pitch angle after each superposition is compared with the power value of the superimposed Pith1 to select the superimposed pitch angle at maximum power (operate at this pitch angle in the next two months).

[0063] The optimal torque coefficient optimization function adds torque coefficient to control small disturbances during the operation of the unit and records the operating data during the disturbance. By analyzing the operating data during the disturbance, the actual optimal torque coefficient of the wind turbine is identified and adjusted in combination with the ambient temperature to achieve the optimal C P control.

[0064] The optimization of torque coefficient mainly conducts statistical analysis on the "torque coefficient" data of the unit in the first two months, and selects the torque coefficient Torque1 when the maximum power is obtained. Then the unit performs small-range torque coefficient control (i.e. active small-angle disturbance learning), with each torque coefficient of 102%, and each torque coefficient point runs for 60 minutes until the torque coefficient reaches 108% (the maximum torque coefficient within the safe range calculated by the load). The power corresponding to the torque coefficient of each exploration and learning is compared with the power at the torque coefficient Torque1, and the torque coefficient operation at the maximum power is selected (operated according to the torque coefficient in the last two months).

[0065] The pitch angle and blade tip speed ratio control are coupled to affect the power generation efficiency C of the unit p The optimization algorithm realizes the joint optimization iteration of pitch angle and tip speed ratio based on periodic model updates (2 months), and achieves the optimal operating parameter tracking throughout the life cycle of the unit.

[0066] For the above embodiments, please refer to Figure 2 , Figure 2 A schematic diagram of a terminal structure provided in an embodiment of the present application is shown in FIG. Figure 2As shown, it includes a processor, an input device, an output device and a memory, which are connected to each other, wherein the memory is used to store a computer program, the computer program includes program instructions, the processor is configured to call the program instructions, and the program includes instructions for executing the following steps;

[0067] Acquire a first pitch angle determined by the target wind turbine generator set according to a historical power set, and acquire a first torque coefficient determined by the target wind turbine generator set according to a historical torque coefficient set;

[0068] Determining a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller;

[0069] Determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller;

[0070] The target wind turbine generator set is controlled using the target pitch angle and the target torque coefficient.

[0071] The above mainly introduces the scheme of the embodiment of the present application from the perspective of the execution process on the method side. It is understandable that in order to realize the above functions, the terminal includes a hardware structure and / or software module corresponding to the execution of each function. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments provided herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0072] The embodiment of the present application can divide the terminal into functional units according to the above method example. For example, each functional unit can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units. It should be noted that the division of units in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0073] In line with the above, see Figure 3 , Figure 3 The present invention provides a schematic diagram of a wind turbine generator set power increase and efficiency improvement control device. Figure 3 As shown, the device comprises:

[0074] An acquisition unit 301 is used to acquire a first pitch angle of a target wind turbine generator set and to acquire a first torque coefficient of the target wind turbine generator set;

[0075] A first determining unit 302, configured to determine a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller;

[0076] A second determining unit 303, configured to determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller;

[0077] The control unit 304 is configured to control the target wind turbine generator set by using the target pitch angle and the target torque coefficient.

[0078] In a possible implementation, in terms of acquiring the first pitch angle of the target wind turbine generator set, the acquiring unit 301 is specifically configured to:

[0079] Acquire a historical power set of the target wind turbine generator set;

[0080] Extracting the superimposed pitch angle of the historical pitch angle corresponding to the maximum historical power in the historical power set to obtain a first superimposed pitch angle;

[0081] Performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set;

[0082] Determining a target operating power from the operating power set according to the maximum historical power;

[0083] A second superimposed pitch angle corresponding to the target operating power is determined as the first pitch angle.

[0084] In a possible implementation, in performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set, the acquisition unit 301 is specifically used to:

[0085] receiving a second reference pitch angle sent by a controller;

[0086] Determining a reference pitch angle set according to the second reference pitch angle, the preset angle step and a preset safe operation pitch angle interval;

[0087] The target wind turbine generator set is controlled to operate according to the pitch angle in the reference pitch angle set to obtain an operating power set.

[0088] In a possible implementation manner, the first determining unit is specifically configured to:

[0089] Obtaining a first weight corresponding to the first pitch angle, and obtaining a second weight corresponding to the first reference pitch angle;

[0090] The first weight and the second weight are used to perform a weighted operation on the first pitch angle and the first reference pitch angle to obtain the target pitch angle.

[0091] In a possible implementation manner, the second determining unit is specifically configured to:

[0092] Obtaining a third weight corresponding to the first torque coefficient, and obtaining a fourth weight corresponding to the first reference torque coefficient;

[0093] The third weight and the fourth weight are used to perform a weighted operation on the first torque coefficient and the first reference torque coefficient to obtain the target torque coefficient.

[0094] An embodiment of the present application also provides a computer storage medium, wherein the computer storage medium stores a computer program for electronic data exchange, and the computer program enables a computer to execute part or all of the steps of any wind turbine generator set power increase and efficiency improvement control method recorded in the above method embodiments.

[0095] An embodiment of the present application also provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program enables a computer to execute part or all of the steps of any wind turbine generator set power increase and efficiency improvement control method recorded in the above method embodiments.

[0096] It should be noted that, for the aforementioned method embodiments, for the sake of simplicity, they are all expressed as a series of action combinations, but those skilled in the art should be aware that the present application is not limited by the described order of actions, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present application.

[0097] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0098] In the several embodiments provided in the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only schematic, such as the division of the units, which is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical or other forms.

[0099] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0100] In addition, the functional units in the various embodiments of the application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware or in the form of software program modules.

[0101] If the integrated unit is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art, or all or part of the technical solution. The computer software product is stored in a memory, including a number of instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned memory includes: U disk, read-only memory (ROM), random access memory (RAM), mobile hard disk, magnetic disk or optical disk, etc., various media that can store program codes.

[0102] A person of ordinary skill in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable memory, which can include: a flash drive, a read-only memory, a random access memory, a magnetic disk or an optical disk, etc.

[0103] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for increasing power and improving efficiency of a wind turbine generator set, characterized in that: The method comprises: Acquire a first pitch angle determined by the target wind turbine generator set according to a historical power set, and acquire a first torque coefficient determined by the target wind turbine generator set according to a historical torque coefficient set; Determining a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller; Determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller; The target wind turbine generator set is controlled using the target pitch angle and the target torque coefficient.

2. The power increase and efficiency improvement control method of a wind turbine generator set according to claim 1, characterized in that: The obtaining of a first pitch angle determined by the target wind turbine generator set according to the historical power set comprises: Acquire a historical power set of the target wind turbine generator set; Extracting the superimposed pitch angle of the historical pitch angle corresponding to the maximum historical power in the historical power set to obtain a first superimposed pitch angle; Performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set; Determining a target operating power from the operating power set according to the maximum historical power; A second superimposed pitch angle corresponding to the target operating power is determined as the first pitch angle.

3. The method for increasing power and improving efficiency of a wind turbine generator set according to claim 2, characterized in that: The target wind turbine generator set is subjected to small-angle superimposed pitch control according to a preset angle step to obtain an operating power set, including: receiving a second reference pitch angle sent by a controller; Determining a reference pitch angle set according to the second reference pitch angle, the preset angle step and a preset safe operation pitch angle interval; The target wind turbine generator set is controlled to operate according to the pitch angle in the reference pitch angle set to obtain an operating power set.

4. The power increase and efficiency improvement control method of a wind turbine generator set according to any one of claims 1 to 3, characterized in that: The step of determining the target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller comprises: Obtaining a first weight corresponding to the first pitch angle, and obtaining a second weight corresponding to the first reference pitch angle; The first weight and the second weight are used to perform a weighted operation on the first pitch angle and the first reference pitch angle to obtain the target pitch angle.

5. The method for increasing power and improving efficiency of a wind turbine generator set according to claim 4, characterized in that: The step of determining the target torque coefficient of the target generator set according to the first torque coefficient and the first reference torque coefficient sent by the controller includes: Obtaining a third weight corresponding to the first torque coefficient, and obtaining a fourth weight corresponding to the first reference torque coefficient; The third weight and the fourth weight are used to perform a weighted operation on the first torque coefficient and the first reference torque coefficient to obtain the target torque coefficient.

6. A wind turbine generator set power increase and efficiency improvement control device, characterized in that: The device comprises: an acquisition unit, configured to acquire a first pitch angle of a target wind turbine generator set and a first torque coefficient of the target wind turbine generator set; a first determining unit, configured to determine a target pitch angle of the target generator set according to the first pitch angle and a first reference pitch angle sent by a controller; a second determining unit, configured to determine a target torque coefficient of the target generator set according to the first torque coefficient and a first reference torque coefficient sent by the controller; A control unit is used to control the target wind turbine generator set by using the target pitch angle and the target torque coefficient.

7. The method for increasing power and improving efficiency of a wind turbine generator set according to claim 6, characterized in that: In terms of acquiring the first pitch angle of the target wind turbine generator set, the acquiring unit is specifically used to: Acquire a historical power set of the target wind turbine generator set; Extracting the superimposed pitch angle of the historical pitch angle corresponding to the maximum historical power in the historical power set to obtain a first superimposed pitch angle; Performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set; Determining a target operating power from the operating power set according to the maximum historical power; A second superimposed pitch angle corresponding to the target operating power is determined as the first pitch angle.

8. The method for increasing power and improving efficiency of a wind turbine generator set according to claim 7, characterized in that: In terms of performing small-angle superimposed pitch control on the target wind turbine generator set according to a preset angle step to obtain an operating power set, the acquisition unit is specifically used to: receiving a second reference pitch angle sent by a controller; Determining a reference pitch angle set according to the second reference pitch angle, the preset angle step and a preset safe operation pitch angle interval; The target wind turbine generator set is controlled to operate according to the pitch angle in the reference pitch angle set to obtain an operating power set.

9. A terminal, characterized in that: The method comprises a processor, an input device, an output device and a memory, wherein the processor, the input device, the output device and the memory are interconnected, wherein the memory is used to store a computer program, the computer program comprises program instructions, and the processor is configured to call the program instructions to execute the method according to any one of claims 1 to 5.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions, and when the program instructions are executed by a processor, the processor is caused to perform the method according to any one of claims 1 to 5.

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