Power boosting method and device for wind turbine generator set

Abstract

The present invention provides a power boosting method and device for a wind turbine generator set. The method comprises: determining a maximum power reference of the wind turbine generator set based on the service life of a temperature-limited component in the wind turbine generator set; and during a short-term power boost of the wind turbine generator set, using the maximum power reference of the wind turbine generator set as the boost power to boost the wind turbine generator set. The device comprises: a power determination unit configured to: determine the maximum power reference of the wind turbine generator set based on the service life of a temperature-limited component in the wind turbine generator set; and a power boosting unit configured to: during a short-term power boost of the wind turbine generator set, using the maximum power reference of the wind turbine generator set as the boost power to boost the wind turbine generator set.

Description

Technical Field

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

[0002] In the related art, a specific period of time after a wind turbine is switched from partial load operation to full load operation is usually used to perform a short-term power boost on the wind turbine (i.e., the power of the wind turbine is set to the maximum during this period of time). The purpose of setting this period of time is only to protect the power distribution system.

[0003] However, some temperature-restricted components in the wind turbine generator set (especially electrical components such as generators and power converters) are susceptible to heat during the above-mentioned power increase process, and the temperature of these components will rise accordingly. Moreover, as the temperature increases or the temperature changes, the probability of these components being damaged or failing increases, thereby reducing the actual service life of these components. Summary of the invention

[0004] The object of the present invention is to provide a power boosting method and device that can take into account the life of components during a short-term power boosting period.

[0005] According to one aspect of the present invention, there is provided a power boosting method for a wind turbine generator set, the power boosting method comprising: determining a maximum power reference of the wind turbine generator set based on the service life of a temperature-limited component in the wind turbine generator set; and boosting the wind turbine generator set using the maximum power reference of the wind turbine generator set as a boosting power during a short-term power boost of the wind turbine generator set.

[0006] Preferably, the service life of the temperature-limited component in the wind turbine generator set may be related to the temperature of the temperature-limited component.

[0007] Preferably, the step of determining the maximum power reference of the wind turbine generator set may include: determining the maximum power reference of the wind turbine generator set regarding mechanical design based on the wind speed and the load borne by the temperature-limited component; and determining the maximum power reference of the wind turbine generator set regarding mechanical design as the maximum power reference of the wind turbine generator set when the temperature of the temperature-limited component is lower than a target temperature.

[0008] Preferably, the step of determining the maximum power reference of the wind turbine generator set may further include: when the temperature of the temperature-limited component is higher than the target temperature, gradually reducing the maximum power reference of the wind turbine generator set regarding mechanical design according to a predetermined step size, and the step of boosting the wind turbine generator set using the maximum power reference of the wind turbine generator set as the boost power may include: boosting the wind turbine generator set using the reduced maximum power reference of the wind turbine generator set regarding mechanical design as the boost power until the temperature of the temperature-limited component is lower than the target temperature.

[0009] Preferably, the target temperature may be based on a maximum temperature that the temperature-limited component can withstand without shortening its service life.

[0010] Preferably, the step of determining the maximum power reference of the wind turbine generator set may include: determining the maximum power reference of the wind turbine generator set regarding temperature based on the temperature of the temperature-limited component; determining the maximum power reference of the wind turbine generator set regarding mechanical design based on the wind speed and the load borne by the temperature-limited component; and determining the maximum power reference of the wind turbine generator set based on the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design.

[0011] Preferably, the maximum power reference of the wind turbine generator set may be one of the following items: the minimum value of the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design, and a calculation result of the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design according to a predetermined weight combination, wherein the predetermined weight combination includes the degree of influence of the maximum power reference of the wind turbine generator set regarding temperature on the boost power and the degree of influence of the maximum power reference of the wind turbine generator set regarding mechanical design on the boost power.

[0012] Preferably, the temperature-limited component may include a generator and / or a power converter in the wind turbine generator set.

[0013] According to another aspect of the present invention, a power boosting device for a wind turbine generator set is provided, the power boosting device comprising: a power determination unit configured to: determine a maximum power reference of the wind turbine generator set based on the service life of a temperature-limited component in the wind turbine generator set; and a power boosting unit configured to: during a short-term power boost of the wind turbine generator set, use the maximum power reference of the wind turbine generator set as the boosting power to boost the power of the wind turbine generator set.

[0014] Preferably, the service life of the temperature-limited component in the wind turbine generator set may be related to the temperature of the temperature-limited component.

[0015] Preferably, the power determination unit may include: a mechanical power determination unit, configured to: determine a maximum power reference of the wind turbine generator set regarding mechanical design based on the wind speed and the load borne by the temperature-limited component; and a maximum power determination unit, configured to: determine the maximum power reference of the wind turbine generator set regarding mechanical design as the maximum power reference of the wind turbine generator set when the temperature of the temperature-limited component is lower than a target temperature.

[0016] Preferably, the power determination unit may further include: a power adjustment unit, configured to: when the temperature of the temperature-limited component is higher than the target temperature, gradually reduce the maximum power reference of the wind turbine generator set regarding the mechanical design according to a predetermined step size, and the power boosting unit is further configured to: use the reduced maximum power reference of the wind turbine generator set regarding the mechanical design as the boosted power to boost the power of the wind turbine generator set until the temperature of the temperature-limited component is lower than the target temperature.

[0017] Preferably, the target temperature may be based on a maximum temperature that the temperature-limited component can withstand without shortening its service life.

[0018] Preferably, the power determination unit may include: a temperature power determination unit, configured to determine a maximum power reference of the wind turbine generator set regarding temperature based on the temperature of the temperature-limited component; a mechanical power determination unit, configured to determine a maximum power reference of the wind turbine generator set regarding mechanical design based on wind speed and the load borne by the temperature-limited component; and a maximum power determination unit, configured to determine a maximum power reference of the wind turbine generator set based on the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design.

[0019] Preferably, the maximum power reference of the wind turbine generator set may be one of the following items: the minimum value of the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design, and a calculation result of the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design according to a predetermined weight combination, wherein the predetermined weight combination includes the degree of influence of the maximum power reference of the wind turbine generator set regarding temperature on the boost power and the degree of influence of the maximum power reference of the wind turbine generator set regarding mechanical design on the boost power.

[0020] Preferably, the temperature-limited component may include a generator and / or a power converter in the wind turbine generator set.

[0021] According to another aspect of the present invention, a computer-readable storage medium storing a computer program is provided. When the computer program is executed by a processor, the power boosting method for a wind turbine generator set as described above is implemented.

[0022] According to another aspect of the present invention, a computer device is provided, comprising: a processor; and a memory storing a computer program, wherein when the computer program is executed by the processor, the power boosting method for a wind turbine generator set as described above is implemented.

[0023] The power boosting method and device for a wind turbine generator set according to an exemplary embodiment of the present invention effectively avoids damage or failure of the temperature limiting component (such as, but not limited to, the generator, power converter, etc.) in the wind turbine generator set due to excessive temperature or excessive temperature change by limiting or constraining the actual temperature of the temperature limiting component in the wind turbine generator set during the short-term power boost period, thereby extending the actual service life of the temperature limiting component. In addition, the power boosting method and device for a wind turbine generator set according to an exemplary embodiment of the present invention also optimizes the boosting power used by the wind turbine generator set during its short-term power boost period by combining the mechanical design and thermal design of the wind turbine generator set. This not only optimizes the service life of the temperature limiting component, but also further improves the level of the annual energy production (AEP) of the wind turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The above objects and features of the present invention will become more apparent through the following description in conjunction with the accompanying drawings, in which:

[0025] Figure 1 A schematic diagram showing the power and rotation speed of a wind turbine generator set changing with wind speed according to an exemplary embodiment of the present invention;

[0026] Figure 2 A schematic process of a power boosting method for a wind turbine generator system according to an exemplary embodiment of the present invention is shown;

[0027] Figure 3 A schematic diagram of a system architecture for power enhancement of a wind turbine generator set according to an exemplary embodiment of the present invention is shown;

[0028] Figure 4 A schematic diagram showing a power boosting device for a wind turbine generator set according to an exemplary embodiment of the present invention outputting boosted power; and

[0029] Figure 5 is a structural block diagram showing a power boosting device for a wind turbine generator set according to an exemplary embodiment of the present invention. DETAILED DESCRIPTION

[0030] Since the actual service life of temperature-limited components in a wind turbine generator set (such as, but not limited to, electrical components such as generators, power converters, or other mechanical components) mainly depends on the temperature of the temperature-limited components, it is possible to consider determining or adjusting the boost power (i.e., maximum power reference) used by the wind turbine generator set during its short-term power boost based on the temperature of the temperature-limited components so that the wind turbine generator set can perform power boost before the temperature of the temperature-limited component reaches or rises to the target temperature, so as to avoid damage or failure of the temperature-limited component due to excessive temperature or excessive temperature change, thereby extending or optimizing the actual service life of the temperature-limited component.

[0031] The idea of ​​the present invention is to determine or adjust the boost power of the wind turbine during its short-term power boost period based on the service life of the temperature-limited components in the wind turbine while complying with the mechanical design standards of the wind turbine, so that the temperature of the temperature-limited components is within an acceptable temperature range during the power boost period, thereby avoiding damage or malfunction of the temperature-limited components due to excessive temperature or excessive temperature changes.

[0032] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0033] Figure 1 A schematic diagram 100 is shown showing the variation of power and rotation speed of a wind turbine generator system with wind speed according to an exemplary embodiment of the present invention.

[0034] Reference Figure 1 , Figure 1 The horizontal axis in the figure indicates the wind speed V wind The size of Figure 1 The vertical axis in can indicate both the power Power of the wind turbine generator set at different wind speeds and the speed Speed ​​of the wind turbine generator set at different wind speeds. Figure 1 The power curve 110 of the wind turbine generator set in FIG. 1 shows the variation of the power of the wind turbine generator set with the wind speed, and also shows the boost power 104 of the wind turbine generator set during its short-term power boost period. In addition, Figure 1The speed curve 120 of the wind turbine generator set in FIG. 1 shows the change of the speed of the wind turbine generator set with the wind speed, and also shows different speed sections, such as constant speed sections 101 and 102 and a variable speed section 103. The wind turbine generator set reaches the maximum speed in the constant speed section 102. It can be seen from the figure that when the speed of the wind turbine generator set reaches the maximum speed, the wind turbine generator set will perform a short-term power boost.

[0035] Figure 2 A schematic process 200 of a power boosting method for a wind turbine generator set according to an exemplary embodiment of the present invention is shown. Process 200 may be executed by any terminal processing device including a processor (such as, but not limited to, a main control system of a wind turbine or a controller of a pitch system thereof).

[0036] Reference Figure 2 , process 200 may be initiated.

[0037] At step 210 , process 200 may determine a maximum power reference for the wind turbine based on a service life of a temperature-limited component in the wind turbine.

[0038] Here, the service life of the temperature-limited component mainly depends on the temperature of the temperature-limited component, but the present invention is not limited thereto, and other indicators that may affect the service life of the temperature-limited component may also be used to determine the maximum power reference of the wind turbine generator set.

[0039] At step 220 , during a short-term power boost of the wind turbine generator set, the process 200 may boost the wind turbine generator set by using the maximum power reference of the wind turbine generator set as the boost power.

[0040] The following will further describe the process of determining the maximum power reference of the wind turbine generator set with reference to examples.

[0041] In one example, the process 200 may determine a maximum power reference of the wind turbine generator set with respect to mechanical design based on the wind speed and the load (such as fatigue load) borne by the temperature-constrained component, and when the temperature of the temperature-constrained component is lower than the target temperature, the process 200 may determine the maximum power reference of the wind turbine generator set with respect to mechanical design as the maximum power reference of the wind turbine generator set with respect to temperature.

[0042] In addition, in this example, when the temperature of the temperature-limited component is higher than the target temperature, the process 200 may further gradually reduce the maximum power reference of the wind turbine generator set with respect to the mechanical design according to a predetermined step size, and may use the reduced maximum power reference of the wind turbine generator set with respect to the mechanical design as the boost power to boost the power of the wind turbine generator set until the temperature of the temperature-limited component is lower than the target temperature.

[0043] Here, the target temperature may be determined based on the maximum temperature that the temperature-limited component can withstand without shortening its service life, so as to avoid damage or failure of the temperature-limited component due to excessive temperature or excessive temperature variation, thereby extending or optimizing the actual service life of the temperature-limited component.

[0044] In another example, the process 200 may determine a maximum power reference of the wind turbine generator set with respect to temperature based on the temperature of the temperature-limited component, determine a maximum power reference of the wind turbine generator set with respect to mechanical design based on the wind speed and the load borne by the temperature-limited component, and determine the maximum power reference of the wind turbine generator set according to the maximum power reference of the wind turbine generator set with respect to temperature and the maximum power reference of the wind turbine generator set with respect to mechanical design. As a non-limiting example, the maximum power reference of the wind turbine generator set may be the minimum value of the maximum power reference of the wind turbine generator set with respect to temperature and the maximum power reference of the wind turbine generator set with respect to mechanical design, or may be a calculation result of combining the maximum power reference of the wind turbine generator set with respect to temperature and the maximum power reference of the wind turbine generator set with respect to mechanical design according to a predetermined weight combination, and the predetermined weight combination may include the degree of influence of the maximum power reference of the wind turbine generator set with respect to temperature on the boost power and the degree of influence of the maximum power reference of the wind turbine generator set with respect to mechanical design on the boost power. For example, corresponding weights may be allocated to the maximum power reference of the wind turbine generator set regarding temperature and the maximum power reference of the wind turbine generator set regarding mechanical design according to the influence of the maximum power reference of the wind turbine generator set regarding temperature on the boost power and the influence of the maximum power reference of the wind turbine generator set regarding mechanical design on the boost power, so that the boost power may be determined by the following formula:

[0045] Boost power = maximum power reference of wind turbine generator set regarding temperature × weight 1 + maximum power reference of wind turbine generator set regarding mechanical design × weight 2.

[0046] It should be understood that, although a specific example for determining the boost power for a wind turbine generator set is described above, the present invention is not limited thereto. For example, a generator and / or a power converter that is susceptible to heat during the power boost process may be selected as a representative of the temperature-limited components in the wind turbine generator set, and then the maximum power reference of the wind turbine generator set is determined based on the temperature of the generator and / or the power converter.

[0047] Back to Figure 2 , after step 220, process 200 may end.

[0048] Figure 3An exemplary system architecture 300 for power boosting of a wind turbine according to an exemplary embodiment of the present invention is shown.

[0049] Reference Figure 3 , Figure 3 The system architecture 300 shown may include a power boosting device 310, a wind turbine 320, and a wind turbine controller 330 (such as, but not limited to, a main control PLC system and a pitch control system in a wind turbine). The above-described schematic process 200 of the power boosting method for a wind turbine may be run as an algorithm in a computing unit of the power boosting device 310.

[0050] exist Figure 3 In the illustrated system architecture 300, the wind turbine generator set 320 may send a signal A including the temperature and / or wind speed of a temperature-limited component (such as, but not limited to, a generator, a power converter, etc.) in the wind turbine generator set 320 and the load borne by the temperature-limited component, and a signal D including relevant operating parameters of the wind turbine generator set 320 (such as, but not limited to, a pitch angle, a generator speed, a blade load, a tower top acceleration, etc.) to a power boosting device 310 and a wind turbine generator set controller 330, respectively. The power boosting device 310 may determine the boosting power according to the temperature and / or wind speed of the temperature-limited component in the wind turbine generator set 320 and the load borne by the temperature-limited component included in the signal A, and send a signal B including the boosting power to the wind turbine generator set controller 330 at a frequency much lower than the sampling frequency of the wind turbine generator set controller 330. The wind turbine controller 330 can output a pitch control signal and a torque control signal E to the wind turbine 320 according to the boost power included in the signal B, the relevant operating parameters of the wind turbine included in the signal D, and the operating parameters included in the signal E input by the operator, so as to control the operation of the wind turbine 320.

[0051] Figure 4 A schematic diagram 400 showing a power boosting device for a wind turbine generator system according to an exemplary embodiment of the present invention outputting a power boosting device is shown.

[0052] Reference Figure 4 ,exist Figure 4 In the power boosting device shown, the calculation of the boosted power may include three parts, namely, a maximum mechanical boost 410 , a maximum temperature boost 420 , and a minimum value 430 .

[0053] exist Figure 4 Of the input / output signals shown, signal A may include the temperature t of the temperature-limited component x. x (Such as, but not limited to, the temperature of the generator t gen , the temperature of the converter t conv etc.) and wind speed vhub and the fatigue load Φ borne by the temperature-limited component x x , and the wind speed v included in signal A hub and the fatigue load Φ borne by the temperature-limited component x x The maximum mechanical lift 410 may be input to the signal A, which includes the temperature of the temperature-limited component x, t x can be input to the maximum temperature boost 420. Accordingly, the maximum mechanical boost 410 can be calculated based on the input wind speed v hub and the fatigue load Φ borne by the temperature-limited component x x Output the maximum power reference of the wind turbine generator set for mechanical design. The maximum temperature increase 420 can be based on the temperature t of the input temperature-limited component x. x Finally, the minimum value 430 can calculate the boost power as the minimum value between the maximum power reference of the wind turbine generator set with respect to mechanical design and the maximum power reference of the wind turbine generator set with respect to temperature and output it as signal B.

[0054] Hereinafter, the above-mentioned calculation processing will be described in detail.

[0055] Regarding the maximum mechanical boost 410, the maximum power reference for the mechanical design may be calculated for each temperature-limited component x based on the following equation (1):

[0056] P mech,x,max =f x (v wind ,Φ x ) (1)

[0057] In formula (1), P mech,x,max represents the maximum power reference calculated for each temperature-limited component x with respect to the mechanical design; v wind Indicates wind speed; Φ x represents the fatigue load borne by each temperature-limited component x.

[0058] Furthermore, the maximum power reference of the wind turbine generator set for mechanical design can be calculated based on the following formula (2):

[0059]

[0060] In formula (2), P ref,mech It indicates the maximum power reference of the wind turbine generator set for mechanical design; P mech,x,max represents the maximum power reference about the mechanical design calculated for each temperature-limited component x; X represents all temperature-limited components x in the wind turbine generator system considered or taken into account in the design.

[0061] Regarding the maximum temperature increase 420, the maximum power reference P corresponding to each temperature-limited component x may be set based on the measured temperature of each temperature-limited component x. temp,x,ref The specific processing process is as follows:

[0062] First, if the temperature t of the temperature-limited component x is x Below target temperature t x,target , the maximum power reference P set for the temperature-limited component x can be enabled ref,x , where the maximum power reference P ref,x It can be the maximum power reference of the temperature-limited component x in terms of mechanical design, or it can be a predefined power value; otherwise, the maximum power reference P can be reduced according to the following formula (3): ref,x :

[0063] P ref,x =P ref,x1 -ΔP ref,x (3)

[0064] Among them, P ref,x1 represents the last maximum power reference of the temperature-limited component x; ΔP ref,x The above power reduction process can be repeatedly performed until the temperature of the temperature-limited component x reaches t x Drop to target temperature t x,target Until the following.

[0065] Finally, the maximum power reference P after the step-by-step reduction ref,x Set as the maximum power reference P with respect to temperature for the temperature-limited component x temp,x,ref .

[0066] Accordingly, the above power reduction process can be used to set the maximum power reference P with respect to temperature for each temperature-limited component x. temp,x,ref .

[0067] Furthermore, the maximum power reference of the wind turbine generator set with respect to temperature can be calculated based on the following formula (4):

[0068]

[0069] In formula (4), P ref,temp Indicates the maximum power reference of the wind turbine generator set with respect to temperature; P temp,x,ref represents the maximum power reference with respect to temperature calculated for each temperature-limited component x; X represents all temperature-limited components x in the wind turbine generator set considered or taken into account in the design.

[0070] Regarding the minimum value 430, the maximum power reference P of the wind turbine generator set obtained through the above process with respect to the mechanical design can be ref,mech and the maximum power reference P of the wind turbine generator set with respect to temperature ref,temp The minimum value among is determined as the boost power, so as to determine the boost power of the wind turbine generator set based on the service life of the temperature-limited components in the wind turbine generator set while complying with the mechanical design standard of the wind turbine generator set.

[0071] Figure 5 5 is a block diagram showing a structure of a power boosting device for a wind turbine generator system according to an exemplary embodiment of the present invention.

[0072] Reference Figure 5 , Figure 5 The power boosting device shown may include a power determination unit 510 and a power boosting unit 520, wherein the power determination unit 510 may be configured to determine a maximum power reference of the wind turbine based on the service life of a temperature-limited component in the wind turbine; and the power boosting unit 520 may be configured to boost the power of the wind turbine using the maximum power reference of the wind turbine as the boosting power during a short-term power boost of the wind turbine.

[0073] In one example, the power determination unit 510 may further include a mechanical power determination unit and a maximum power determination unit (neither of which is shown), wherein the mechanical power determination unit is configured to determine a maximum power reference of the wind turbine generator set regarding mechanical design based on the wind speed and the load borne by the temperature-limited component; and the maximum power determination unit is configured to determine the maximum power reference of the wind turbine generator set regarding mechanical design as the maximum power reference of the wind turbine generator set when the temperature of the temperature-limited component is lower than a target temperature.

[0074] In addition, in this example, the power determination unit may further include a power adjustment unit (not shown), which may be configured to gradually reduce the maximum power reference of the wind turbine generator set regarding the mechanical design according to a predetermined step size when the temperature of the temperature-limited component is higher than the target temperature, and the power boosting unit 520 may be further configured to boost the power of the wind turbine generator set by using the reduced maximum power reference of the wind turbine generator set regarding the mechanical design as the boosted power until the temperature of the temperature-limited component is lower than the target temperature.

[0075] Here, the target temperature may be determined based on the maximum temperature that the temperature-limited component can withstand without shortening its service life, so as to avoid damage or failure of the temperature-limited component due to excessive temperature or excessive temperature variation, thereby extending or optimizing the actual service life of the temperature-limited component.

[0076] In another example, the power determination unit 510 may include a temperature power determination unit, a mechanical power determination unit, and a maximum power determination unit (all not shown), wherein the temperature power determination unit is configured to determine the maximum power reference of the wind turbine generator set with respect to temperature based on the temperature of the temperature-limited component; the mechanical power determination unit is configured to determine the maximum power reference of the wind turbine generator set with respect to mechanical design based on the wind speed and the load borne by the temperature-limited component; and the maximum power determination unit is configured to determine the maximum power reference of the wind turbine generator set with respect to temperature and the maximum power reference of the wind turbine generator set with respect to mechanical design. As a non-limiting example, it may be the minimum value of the maximum power reference of the wind turbine generator set with respect to temperature and the maximum power reference of the wind turbine generator set with respect to mechanical design, or it may be the calculation result of the maximum power reference of the wind turbine generator set with respect to temperature and the maximum power reference of the wind turbine generator set with respect to mechanical design according to a predetermined weight combination, and the predetermined weight combination may include the influence degree of the maximum power reference of the wind turbine generator set with respect to temperature on the said lifting power and the influence degree of the maximum power reference of the wind turbine generator set with respect to mechanical design on the lifting power.

[0077] The power boosting method and device for a wind turbine generator set according to an exemplary embodiment of the present invention effectively avoids damage or failure of the temperature limiting component (such as, but not limited to, the generator, power converter, etc.) in the wind turbine generator set due to excessive temperature or excessive temperature change by limiting or constraining the actual temperature of the temperature limiting component in the wind turbine generator set during the short-term power boost period, thereby extending the actual service life of the temperature limiting component. In addition, the power boosting method and device for a wind turbine generator set according to an exemplary embodiment of the present invention also optimizes the boosting power used by the wind turbine generator set during its short-term power boost period by combining the mechanical design and thermal design of the wind turbine generator set. This not only optimizes the service life of the temperature limiting component, but also further improves the level of the annual energy production (AEP) of the wind turbine generator set.

[0078] According to an exemplary embodiment of the present invention, a computer-readable storage medium storing a computer program is also provided. The computer-readable storage medium stores a computer program that causes the processor to perform a power boosting method for a wind turbine generator set according to the present invention when executed by the processor. The computer-readable recording medium is any data storage device that can store data read out by a computer system. Examples of computer-readable recording media include: read-only memory, random access memory, read-only optical disk, magnetic tape, floppy disk, optical data storage device, and carrier wave (such as data transmission through the Internet via a wired or wireless transmission path).

[0079] According to an exemplary embodiment of the present invention, a computer device is also provided. The computer device includes a processor and a memory. The memory is used to store a computer program. The computer program is executed by the processor so that the processor executes the computer program of the power boosting method for a wind turbine generator set according to the present invention.

[0080] While the present application has been shown and described with reference to preferred embodiments, it will be understood by those skilled in the art that various modifications and variations may be made to these embodiments without departing from the spirit and scope of the present application as defined by the appended claims.

Claims

1. A method for increasing the power of a wind turbine generator set, characterized in that: The power boosting method comprises: Determine a maximum power reference of the wind turbine generator set based on a maximum power reference of the wind turbine generator set regarding mechanical design and / or a maximum power reference of the wind turbine generator set regarding temperature, wherein the maximum power reference of the wind turbine generator set regarding mechanical design is determined based on wind speed and a load borne by a temperature-limited component in the wind turbine generator set, and the maximum power reference of the wind turbine generator set regarding temperature is determined based on the temperature of the temperature-limited component; and During the short-term power boost of the wind turbine generator set, the wind turbine generator set is powered up using the maximum power reference of the wind turbine generator set as the boost power. The step of determining the maximum power reference of the wind turbine generator set comprises: When the temperature of the temperature-limited component is lower than the target temperature, the maximum power reference of the wind turbine generator set regarding the mechanical design is determined as the maximum power reference of the wind turbine generator set; when the temperature of the temperature-limited component is higher than the target temperature, the maximum power reference of the wind turbine generator set regarding the mechanical design is gradually reduced according to a predetermined step size, and the reduced maximum power reference of the wind turbine generator set regarding the mechanical design is determined as the maximum power reference of the wind turbine generator set.

2. The power boosting method according to claim 1, characterized in that: The service life of the temperature-limited component is related to the temperature of the temperature-limited component.

3. The power boosting method according to claim 1, characterized in that: The step of boosting the power of the wind generator set by using the maximum power reference of the wind generator set as the boost power includes: boosting the power of the wind generator set by using the reduced maximum power reference of the wind generator set regarding mechanical design as the boost power until the temperature of the temperature-limited component is lower than the target temperature.

4. The power boosting method according to claim 3, characterized in that: The target temperature is based on the maximum temperature that the temperature-limited component can withstand without shortening its useful life.

5. The power boosting method according to claim 1, characterized in that: The maximum power reference of the wind turbine generator set is one of the following: a minimum value of a maximum power reference of the wind turbine generator set with respect to temperature and a maximum power reference of the wind turbine generator set with respect to mechanical design, and The maximum power reference of the wind generator set regarding temperature and the maximum power reference of the wind generator set regarding mechanical design are calculated results according to a predetermined weight combination, wherein the predetermined weight combination includes the degree of influence of the maximum power reference of the wind generator set regarding temperature on the boost power and the degree of influence of the maximum power reference of the wind generator set regarding mechanical design on the boost power.

6. The power boosting method according to claim 1, characterized in that: The temperature-limited components include a generator and / or a power converter in the wind turbine generator set.

7. A power boosting device for a wind turbine generator set, characterized in that: The power boosting device comprises: a power determination unit, configured to: determine a maximum power reference of the wind generator set based on a maximum power reference of the wind generator set regarding mechanical design and / or a maximum power reference of the wind generator set regarding temperature, wherein the maximum power reference of the wind generator set regarding mechanical design is determined based on wind speed and a load borne by a temperature-limited component in the wind generator set, and the maximum power reference of the wind generator set regarding temperature is determined based on the temperature of the temperature-limited component; a maximum power determination unit configured to: determine a maximum power reference of the wind turbine generator set with respect to mechanical design as a maximum power reference of the wind turbine generator set when the temperature of the temperature-limited component is lower than a target temperature; a power adjustment unit, configured to: when the temperature of the temperature-limited component is higher than the target temperature, gradually reduce the maximum power reference of the wind turbine generator set with respect to mechanical design according to a predetermined step length, and determine the reduced maximum power reference of the wind turbine generator set with respect to mechanical design as the maximum power reference of the wind turbine generator set; and The power boosting unit is configured to: during a short-term power boosting period of the wind generator set, boost the power of the wind generator set by taking the maximum power reference of the wind generator set as the boosting power.

8. The power boosting device according to claim 7, characterized in that: The service life of the temperature-limited component is related to the temperature of the temperature-limited component.

9. The power boosting device according to claim 7, characterized in that: The power boosting unit is further configured to boost the power of the wind turbine generator set by using the reduced maximum power reference of the wind turbine generator set in terms of mechanical design as boost power until the temperature of the temperature-limited component is lower than the target temperature.

10. The power boosting device according to claim 9, characterized in that: The target temperature is based on the maximum temperature that the temperature-limited component can withstand without shortening its useful life.

11. The power boosting device according to claim 7, characterized in that: The maximum power reference of the wind turbine generator set is one of the following: a minimum value of a maximum power reference of the wind turbine generator set with respect to temperature and a maximum power reference of the wind turbine generator set with respect to mechanical design, and The maximum power reference of the wind generator set regarding temperature and the maximum power reference of the wind generator set regarding mechanical design are calculated results according to a predetermined weight combination, wherein the predetermined weight combination includes the degree of influence of the maximum power reference of the wind generator set regarding temperature on the boost power and the degree of influence of the maximum power reference of the wind generator set regarding mechanical design on the boost power.

12. The power boosting device according to claim 7, characterized in that: The temperature-limited components include a generator and / or a power converter in the wind turbine generator set.

13. A computer-readable storage medium storing a computer program, wherein: When the computer program is executed by a processor, the power boosting method for a wind turbine generator set according to any one of claims 1 to 6 is implemented.

14. A computing device comprising: processor; A memory storing a computer program, which, when executed by a processor, implements the power boosting method for a wind turbine generator set according to any one of claims 1 to 6.

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