Wind turbine resonance control method, device, controller, medium and product

Abstract

The application discloses a wind turbine resonance control method, device, controller, medium and product. The wind turbine resonance control method comprises the following steps: in the case that it is determined that the current operating state of a wind turbine is in a preset resonance speed interval, obtaining vibration information of the wind turbine; in the case that it is determined that the vibration information meets a preset vibration condition, adjusting the minimum speed of the wind turbine, so that the current operating state is outside the preset resonance speed interval; wherein the preset resonance speed interval is a speed interval corresponding to a resonance frequency band of the resonance of an impeller and a tower. The effect of meeting the requirements of the power grid for the response time, the regulation rate and the steady-state accuracy of the tower to avoid the preset resonance speed interval in terms of the timeliness and stability of the control can be achieved.

Description

Technical Field

[0001] This application relates to the field of wind power generation, specifically to a method, device, controller, medium, and product for controlling the resonance of a wind turbine generator set. Background Technology

[0002] During the operation of wind turbine generator sets, the rotational frequency of the rotor in the wind turbine generator set is prone to resonance with the natural frequency of the tower. Usually, the resonance frequency band is a relatively wide range. If the operating speed of the wind turbine generator set falls within the speed range corresponding to the resonance frequency band, it will cause strong vibration of the whole machine for tens of seconds or even several seconds, affecting the performance of the wind turbine generator set and damaging structural components, resulting in serious economic losses.

[0003] Currently, the method to control the operating speed of wind turbine generators so that it rarely falls within the speed range corresponding to the resonant frequency band is to perform speed jump control on the speed setpoint of the wind turbine generator based on the speed and torque of the wind turbine generator, so that the current operating speed jumps out of the speed range corresponding to the resonant frequency band.

[0004] The aforementioned speed jump control method may sometimes make it difficult for the output power of the wind turbine generator to meet the requirements of response time and settling time, and the torque is affected by factors such as wind speed and changes randomly, which may sometimes make it difficult to meet the requirements of control accuracy. Summary of the Invention

[0005] The purpose of this application is to provide a method, device, controller, medium, and product for resonant control of wind turbine generator sets, in order to solve the problems in the prior art where the output power of wind turbine generator sets cannot meet the requirements of response time and settling time, and the torque is affected by factors such as wind speed and changes randomly, thus failing to meet the requirements of control accuracy.

[0006] The technical solution of this application is as follows:

[0007] Firstly, a resonance control method for a wind turbine generator set is provided, the method comprising:

[0008] Under the condition that the current operating state of the wind turbine is within the preset resonant speed range, the vibration information of the wind turbine generator set is acquired;

[0009] If the vibration information is determined to meet the preset vibration conditions, the minimum speed of the wind turbine is adjusted so that the current operating state is outside the preset resonance speed range;

[0010] The preset resonant speed range is the speed range corresponding to the resonant frequency band where the impeller and tower resonate.

[0011] Secondly, a resonance control device for a wind turbine generator set is provided, the device comprising:

[0012] The acquisition module is used to acquire vibration information of the wind turbine generator set when it is determined that the current operating state of the wind turbine generator is within the preset resonant speed range.

[0013] The first adjustment module is used to adjust the minimum speed of the wind turbine generator when the vibration information is determined to meet the preset vibration conditions, so that the current operating state is outside the preset resonance speed range; wherein, the preset resonance speed range is the speed range corresponding to the resonance frequency band where the impeller and the tower resonate.

[0014] Thirdly, this application provides a resonance controller for a wind turbine generator set. The resonance controller includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor. When the program or instructions are executed by the processor, they implement the steps of the wind turbine generator set resonance control method described in any of the embodiments of this application.

[0015] Fourthly, embodiments of this application provide a readable storage medium storing a program or instructions, which, when executed by a processor, implement the steps of the wind turbine generator resonance control method described in any of the embodiments of this application.

[0016] Fifthly, embodiments of this application provide a computer program product, wherein when the instructions in the computer program product are executed by the processor of a wind turbine resonant controller, the wind turbine resonant controller causes the wind turbine resonant controller to perform the steps of any of the wind turbine resonant control methods described in embodiments of this application.

[0017] The technical solutions provided by the embodiments of this application bring at least the following beneficial effects:

[0018] The wind turbine resonance control method, device, controller, medium, and product provided in this application obtain vibration information of the wind turbine when it is determined that the current operating state of the wind turbine is within a preset resonance speed range. When the vibration information meets preset vibration conditions, the minimum speed of the wind turbine is adjusted. Thus, when the current operating state is determined to be within the preset resonance speed range, jump speed control is performed based on the vibration information of the wind turbine, eliminating the waiting time for speed jumps. The output power of the wind turbine can meet the requirements of response time, settling time, and control accuracy. Furthermore, by adjusting the minimum speed of the wind turbine, the solution in this application ensures that the current operating state is outside the preset resonance speed range, thereby ensuring the stability of the wind turbine's state and meeting the steady-state error requirements. It also avoids continuous speed jumps, improving the lifespan and safety of the wind turbine.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. In the drawings, embodiments are described by way of example rather than limitation.

[0021] Figure 1 This is a schematic diagram of existing technology for controlling the speed jump of wind turbine generator sets;

[0022] Figure 2 This is a schematic flowchart of a resonance control method for a wind turbine generator provided in the first aspect of this application;

[0023] Figure 3 This is a schematic diagram illustrating the control of the speed jump of a wind turbine generator set according to an embodiment of this application;

[0024] Figure 4 This is another schematic diagram illustrating the control of wind turbine generator speed fluctuations in an embodiment of this application;

[0025] Figure 5 This is another schematic diagram of controlling the speed jump of a wind turbine generator set according to an embodiment of this application;

[0026] Figure 6 This is a schematic diagram of the structure of a wind turbine generator resonance control device provided in the second aspect embodiment of this application;

[0027] Figure 7This is a schematic diagram of the structure of a wind turbine generator resonance controller provided in the second aspect of this application. Detailed Implementation

[0028] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely intended to explain this application and not to limit it. For those skilled in the art, this application can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this application by illustrating examples.

[0029] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples consistent with some aspects of this application as detailed in the appended claims.

[0030] Before introducing the technical solutions of the embodiments of this application, let's first introduce the traditional solutions mentioned in the background art.

[0031] refer to Figure 1 , Figure 1 This is a schematic diagram of a traditional method for controlling the speed jump of a wind turbine generator. Figure 1 The horizontal axis represents the wind turbine's rotational speed, and the vertical axis represents the wind turbine's torque based on the power required by the grid. After the wind turbine starts, its rotational speed increases, but at this point, the speed has not yet entered the preset resonance speed range (i.e., Figure 1 The rotational speed (Wlow) is between the rotational speeds (Whigh) and (Wlow's speed), meaning the wind turbine's rotational speed is between... Figure 1 The low speed range (i.e.) Figure 1In the Wlow range, the wind turbine's speed is not higher than Wlow, and the corresponding torque is not higher than a certain preset threshold (e.g., Tlow-max, which is the torque corresponding to the Wlow speed). As the wind turbine's speed continues to increase, it begins to enter the Wlow and Whigh range. When the wind turbine's speed is in the Wlow range, the torque of the wind turbine is acquired. If the torque of the wind turbine exceeds Tlow-max at this time and continues for a period of time, the wind turbine's speed setpoint (i.e., the current wind turbine speed) is controlled to jump from Wlow to Whigh, thus avoiding the preset resonance range.

[0032] When the wind turbine is in the high speed range (i.e.) Figure 1 When operating in the Whigh range, the wind turbine's speed is not lower than Whigh, and the corresponding torque is not lower than another preset threshold (e.g., Thigh-max, where Thigh-max is the torque corresponding to the speed Whigh). Since the wind turbine operates continuously in the high-speed range, the power supplied to the wind turbine is very high, which cannot meet the grid connection requirements. Therefore, it is necessary to reduce the wind turbine's speed to lower its power. As the wind turbine's speed continues to decrease, it begins to enter the Wlow and Whigh range. When the wind turbine's speed drops to Whigh, the wind turbine's torque is obtained. If the wind turbine's torque is lower than Thigh-max at this time and remains so for a period of time, the wind turbine's speed setting value (i.e., the set current wind turbine speed value) is switched from Whigh to Wlow to avoid the preset resonance range.

[0033] It should be noted that the preset resonance range can be the speed range corresponding to the resonance frequency band where the impeller and tower resonate.

[0034] Based on the above analysis, the current method for controlling the operating speed of wind turbine generators to avoid falling within the resonant frequency band is to use speed jump control based on the generator's speed and torque to jump the current operating speed out of the resonant frequency band. However, when jumping speeds, if the generator's speed is at the trigger speed (Wlow or Whigh), the generator's torque needs to be acquired and its value determined to be greater than (or less than) a certain threshold for a specific period. Therefore, the current method of controlling wind turbine generator speed jumps requires a certain waiting time, and the speed setpoint changes from Wlow to Whigh during the speed jump process, resulting in a large range of speed setpoint variation.

[0035] In contrast, this application provides a wind turbine generator resonance control method, device, controller, medium, and product. By acquiring vibration information of the wind turbine generator when its current operating state is determined to be within a preset resonance speed range, and adjusting the minimum speed of the wind turbine generator when the vibration information meets preset vibration conditions, this method allows for speed jump control based on the vibration information of the wind turbine generator when the current operating state is determined to be within the preset resonance speed range. This eliminates the waiting time for speed jumps, ensuring that the output power of the wind turbine generator meets the requirements for response time, settling time, and control accuracy. Furthermore, by adjusting the minimum speed of the wind turbine generator, this application ensures that the current operating state is outside the preset resonance speed range, thus guaranteeing the stability of the wind turbine generator and meeting the steady-state error requirements. It also avoids continuous speed jumps, improving the lifespan and safety of the wind turbine generator.

[0036] The resonance control method for wind turbine generators provided in this application will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.

[0037] Figure 2 This is a flowchart illustrating a wind turbine resonance control method provided in an embodiment of this application. The execution entity of this wind turbine resonance control method can be a server. It should be noted that the aforementioned execution entity does not constitute a limitation on this application.

[0038] like Figure 2 As shown, the wind turbine generator resonance control method provided in this application embodiment may include steps 210-220.

[0039] Step 210: If the current operating state of the wind turbine is determined to be within the preset resonant speed range, obtain the vibration information of the wind turbine generator set.

[0040] Step 220: If the vibration information meets the preset vibration conditions, adjust the minimum speed of the wind turbine to make the current operating state outside the preset resonance speed range.

[0041] The preset resonant speed range can be the speed range corresponding to the resonant frequency band where the impeller and tower resonate.

[0042] In the embodiments of this application, vibration information of the wind turbine is obtained when the current operating state of the wind turbine is determined to be within a preset resonance speed range. When the vibration information is determined to meet preset vibration conditions, the minimum speed of the wind turbine is adjusted. Thus, when the current operating state is determined to be within the preset resonance speed range, speed jump control is performed based on the vibration information of the wind turbine, eliminating the waiting time for speed jumps. The output power of the wind turbine can meet the requirements of response time, stabilization time, and control accuracy. At the same time, the solution of this application embodiment, by adjusting the minimum speed of the wind turbine, ensures that the current operating state is outside the preset resonance speed range (in other words, avoiding the preset resonance speed range), thereby ensuring the stability of the wind turbine's state and ensuring that the wind turbine can meet the steady-state error requirements. It also avoids continuous speed jumps in the wind turbine, improving the lifespan and safety of the wind turbine.

[0043] The resonance control method for wind turbine generator sets provided in the embodiments of this application will be described in detail below.

[0044] First, let's introduce step 210, which involves obtaining vibration information of the wind turbine generator set after determining that the current operating state of the wind turbine generator is within the preset resonant speed range.

[0045] The current operating status of the wind turbine can be its current operating state, such as its current operating speed.

[0046] The preset resonant speed range can be a pre-set resonant speed range, which can be the speed range corresponding to the resonant frequency band where the impeller and tower resonate.

[0047] Vibration information can be related to the vibration of a wind turbine generator. For example, it could be the vibration frequency or amplitude of the wind turbine generator.

[0048] In some embodiments of this application, in order to accurately determine the vibration information of the wind turbine generator set, the acquisition of the vibration information of the wind turbine generator set may include:

[0049] Vibration data of wind turbine generators in different directions are obtained using vibration sensors in different directions;

[0050] The vibration data is converted to time and frequency to obtain the converted vibration data.

[0051] The vibration data after time-frequency conversion is processed to obtain the vibration information of the wind turbine generator.

[0052] Among them, the vibration data of the wind turbine generator in different directions can be the relevant vibration data of the wind turbine generator in different directions.

[0053] In some embodiments of this application, vibration data of the wind turbine generator in different directions can be acquired using vibration sensors in different directions (e.g., the X and Y directions). For example, vibration signals characterizing the vibration of the wind turbine generator can be acquired. Then, the vibration data is converted to time and frequency, specifically by performing a Fourier transform to obtain the time-frequency converted vibration data. The converted vibration data is then processed to obtain the vibration information of the wind turbine generator.

[0054] In the embodiments of this application, vibration data of the wind turbine generator set in different directions are acquired by vibration sensors in different directions, the vibration data is converted into time and frequency to obtain the time-frequency converted vibration data, and then the time-frequency converted vibration data is processed to obtain accurate vibration information of the wind turbine generator set.

[0055] In some embodiments of this application, the vibration information may include vibration amplitude; to further accurately determine the vibration information of the wind turbine generator set, the processing of the time-frequency converted vibration data to obtain the vibration information of the wind turbine generator set may include:

[0056] The vibration amplitude of the wind turbine generator is obtained by calculating the maximum amplitude within the preset vibration frequency band after the vibration data is converted from time to frequency.

[0057] The preset vibration frequency band can be a pre-set vibration frequency band.

[0058] The vibration amplitude of the wind turbine generator can be obtained by calculating the maximum vibration amplitude within a preset vibration frequency band after time-frequency conversion. The maximum vibration amplitude is then selected as the vibration information.

[0059] In the embodiments of this application, the maximum amplitude value within a preset vibration frequency band of the vibration data after time-frequency conversion is used as vibration information, so that the vibration status of the wind turbine generator can be accurately determined.

[0060] Finally, step 220 is introduced. If the vibration information is determined to meet the preset vibration conditions, the minimum speed of the wind turbine is adjusted so that the current operating state is outside the preset resonance speed range.

[0061] The preset vibration condition can be a pre-set vibration condition. Specifically, the preset vibration condition can be that the vibration information is greater than a preset vibration information.

[0062] The preset vibration information can be information that is pre-set to correspond to the vibration information. For example, when the vibration information is the amplitude, the preset vibration information can be a vibration amplitude threshold.

[0063] The minimum rotational speed of a wind turbine can be the minimum speed at which it is allowed to operate.

[0064] In some embodiments of this application, to further ensure that the output power of the wind turbine meets the requirements of response time and settling time, as well as the requirements of control accuracy, and to ensure the stability of the wind turbine's state, and to ensure that the wind turbine meets the requirements of steady-state error, while also avoiding continuous speed jumps in the wind turbine and improving the lifespan and safety of the wind turbine, adjusting the minimum speed of the wind turbine to keep the current operating state outside the preset resonance speed range may include:

[0065] This allows the minimum operating speed of the wind turbine generator to jump from the grid-connected speed to the speed corresponding to the current operating state.

[0066] The minimum rotational speed is increased at a first preset rate until the minimum rotational speed increases from the speed corresponding to the current operating state to the upper limit of the preset resonance speed range, so that the current operating state is outside the preset resonance speed range.

[0067] Among them, the grid-connected speed can be the speed corresponding to the power generation capacity of the wind turbine limited by the grid.

[0068] The first preset speed can be a pre-set speed, which can be set according to needs. As long as the minimum speed is steadily increased from the speed corresponding to the current operating state to the upper limit of the preset resonance speed range, the wind turbine generator speed can be smoothly adjusted without causing unnecessary vibration.

[0069] In some embodiments of this application, see Figure 3 Wsync is the grid-connected speed, Wg is the speed corresponding to the current operating state of the wind turbine, Wlow is the lower limit of the preset resonance speed range, Whigh is the upper limit of the preset resonance speed range, and Wr is the maximum speed at which the wind turbine is allowed to operate.

[0070] Continue to refer to Figure 3 After the wind turbine starts, its rotational speed Wg increases and it enters the power generation state. At this time, the wind turbine's rotational speed has not yet entered the preset resonance speed range. As the wind turbine's rotational speed increases, its rotational speed Wg begins to enter the preset resonance speed range, that is, the wind turbine's rotational speed Wg begins to reach... Figure 3The Wlow parameter indicates whether the vibration information of the wind turbine generator meets the preset vibration conditions. If the vibration information meets the preset conditions (in practical applications, when the wind turbine generator's speed Wg reaches Wlow, the vibration information does not meet the preset vibration conditions, and the wind turbine generator's speed continues to increase), the vibration information continues along the Wlow parameter. Figure 3 The straight line AB in the diagram continues upwards from point A to point B. When the rotational speed Wg of the wind turbine reaches a certain value, for example, it could be... Figure 3 At point C in the equation (where the vibration information of the wind turbine generator meets the preset vibration conditions), the minimum speed of the wind turbine generator can be controlled to jump from the grid-connected speed Wsync to the speed Wg corresponding to the current operating state. Then, the minimum speed is controlled to increase from the speed corresponding to the current operating state to the upper limit of the preset resonance speed range Whigh according to the first preset rate, so that the current operating state is outside the preset resonance speed range, that is, so that the current operating speed can avoid the preset resonance speed range.

[0071] During the process of controlling the minimum speed of the wind turbine to jump from the grid-connected speed Wsync to the speed Wg corresponding to the current operating state, the torque of the wind turbine may automatically decrease accordingly (this is because when the wind force is constant, the power of the wind turbine is constant, and while the speed of the wind turbine is increased, its torque will decrease accordingly), so that the energy is used to increase the minimum speed from Wg to Whigh, thereby avoiding the resonance range.

[0072] In some embodiments of this application, when it is determined that the current operating state of the wind turbine is within a preset resonant speed range, the vibration information of the wind turbine is obtained, rather than the torque. This eliminates the need to judge the torque, i.e., to maintain the torque for a certain period, thus avoiding the waiting time for speed jumps. The output power of the wind turbine can meet the requirements of response time and stabilization time. Furthermore, since torque is not considered, it is unaffected by factors such as wind speed, meeting the requirements of control precision. Simultaneously, the speed setpoint increases from Wg (i.e., a value between Wlow and Whigh) to Whigh, rather than from Wlow to Whigh. This results in a smaller range of speed setpoint variation compared to existing technologies. Moreover, because the speed setpoint variation range in this embodiment is smaller than in existing technologies, and the adjustment is to the minimum speed of the wind turbine, the operating speed of the wind turbine will not fall below this minimum speed during operation, preventing continuous speed jumps. This improves the lifespan and safety of the wind turbine.

[0073] In some embodiments of this application, to further improve the stability of the wind turbine generator, after the current operating state is outside the preset resonance speed range, the aforementioned wind turbine generator resonance control method may further include:

[0074] The minimum speed is reduced according to the second preset rate until the minimum speed is reduced to the grid-connected speed.

[0075] The second preset speed can be a pre-set speed, which can be set according to requirements. As long as the minimum speed steadily decreases from the upper limit of the preset resonance speed range to the grid-connected speed, the wind turbine generator speed can be smoothly adjusted without causing unnecessary vibration.

[0076] In some embodiments of this application, the second preset rate and the first preset rate may be from the same preset range.

[0077] refer to Figure 4 After avoiding the preset resonance speed range, the minimum speed at this time is the upper limit value Whigh of the preset resonance speed range. After the resonance of the wind turbine is detected to be relieved, the minimum speed can be reduced according to the second preset rate until the minimum speed is reduced to the grid-connected speed, and the initial parameter settings are restored. At this time, the speed of the wind turbine will operate within the range of Wsync-Wr according to the wind speed.

[0078] In the embodiments of this application, after avoiding the preset resonance speed range, the minimum speed is reduced at a second preset rate until the minimum speed is reduced to the grid-connected speed. This can reduce the speed of the wind turbine, reduce the output power of the wind turbine, and save resources.

[0079] In some embodiments of this application, to further improve the lifespan and safety of wind turbine generator sets, the aforementioned wind turbine generator set resonance control method may further include:

[0080] If the current operating state of the wind turbine is not within the preset resonance speed range and the vibration information does not meet the preset vibration conditions, the minimum speed is set to the grid-connected speed.

[0081] In some embodiments of this application, reference is made to Figure 5 Wsync is the grid-connected speed, Wg is the speed corresponding to the current operating state of the wind turbine, Wlow is the lower limit of the preset resonance speed range, Whigh is the upper limit of the preset resonance speed range, and Wr is the maximum speed at which the wind turbine is allowed to operate.

[0082] If the speed Wg corresponding to the current operating state of the wind turbine is less than Wlow, or greater than Whigh, then it is determined that the current operating state of the wind turbine is not within the preset resonance speed range.

[0083] After the wind turbine starts, its rotational speed Wg increases and it enters the power generation state. At this time, the minimum rotational speed is set to the grid-connected speed Wsync. The wind turbine's rotational speed has not yet entered the preset resonance speed range. As the wind turbine's rotational speed increases, its rotational speed Wg begins to enter the preset resonance speed range, that is, the wind turbine's rotational speed Wg begins to reach... Figure 5 In the Wlow section, it is determined whether the vibration information of the wind turbine generator meets the preset vibration conditions. If the vibration information of the wind turbine generator does not meet the preset vibration conditions, Wg is controlled to continuously increase, that is, along the... Figure 5 The straight line AB in the diagram continues to move upwards along the direction from point A to point B, while the minimum rotational speed remains unchanged at the grid-connected speed Wsync.

[0084] In the embodiments of this application, when the current operating state of the wind turbine is not within the preset resonant speed range and the vibration information does not meet the preset vibration conditions, the minimum speed is set to the grid-connected speed. This reduces the number of minimum speed jumps and further improves the lifespan and safety of the wind turbine.

[0085] It should be noted that the wind turbine resonance control method provided in this application embodiment can be executed by a wind turbine resonance control device or a control module in the wind turbine resonance control device for executing the wind turbine resonance control method.

[0086] Based on the same inventive concept as the aforementioned wind turbine generator resonance control method, this application also provides a wind turbine generator resonance control device. The following is in conjunction with... Figure 6 The resonance control device for wind turbine generator sets provided in the embodiments of this application will be described in detail.

[0087] Figure 6 This is a schematic diagram of the structure of a wind turbine generator resonance control device according to an exemplary embodiment.

[0088] like Figure 6 As shown, the resonance control device 600 of the wind turbine generator set may include:

[0089] The acquisition module 610 is used to acquire the vibration information of the wind turbine generator set when it is determined that the current operating state of the wind turbine generator is within the preset resonant speed range.

[0090] The first adjustment module 620 is used to adjust the minimum speed of the wind turbine generator when the vibration information is determined to meet the preset vibration conditions, so that the current operating state is outside the preset resonance speed range; wherein, the preset resonance speed range is the speed range corresponding to the resonance frequency band where the impeller and the tower resonate.

[0091] In the embodiments of this application, the acquisition module acquires the vibration information of the wind turbine generator set when it is determined that the current operating state of the wind turbine generator set is within a preset resonance speed range. Based on the adjustment module's determination that the vibration information meets preset vibration conditions, the minimum speed of the wind turbine generator set is adjusted. Thus, when it is determined that the current operating state is within the preset resonance speed range, jump speed control is performed based on the vibration information of the wind turbine generator set, eliminating the waiting time for jump speed control. The output power of the wind turbine generator set can meet the requirements of response time, stabilization time, and control accuracy. At the same time, the solution of this application embodiment, by adjusting the minimum speed of the wind turbine generator set, ensures that the current operating state is outside the preset resonance speed range, thereby ensuring the stability of the wind turbine generator set and meeting the steady-state error requirements. It also avoids continuous jump speed in the wind turbine generator set, improving the lifespan and safety of the wind turbine generator set.

[0092] In some embodiments of this application, in order to further ensure that the output power of the wind turbine generator meets the requirements of response time and settling time, as well as the requirements of control accuracy, and to ensure the stability of the wind turbine generator's state, and to ensure that the wind turbine generator meets the requirements of steady-state error, while also avoiding continuous speed jumps in the wind turbine generator, and improving the lifespan and safety of the wind turbine generator, the first adjustment module 620 can be specifically used for:

[0093] If the vibration information is determined to meet the preset vibration conditions, the minimum speed of the wind turbine generator set is changed from the grid-connected speed to the speed corresponding to the current operating state.

[0094] The minimum rotational speed is increased at a first preset rate until the minimum rotational speed increases from the speed corresponding to the current operating state to the upper limit of the preset resonance speed range, so that the current operating state is outside the preset resonance speed range;

[0095] The grid-connected speed is the speed corresponding to the power generation capacity of the wind turbine generator as limited by the power grid.

[0096] In some embodiments of this application, to further improve the stability of the wind turbine generator, the aforementioned wind turbine generator resonance control device may further include:

[0097] The second adjustment module is used to reduce the minimum speed at a second preset rate until the minimum speed is reduced to the grid-connected speed, wherein the second preset rate and the first preset rate are from the same preset range.

[0098] In some embodiments of this application, to further improve the lifespan and safety of wind turbine generator sets, the aforementioned wind turbine generator set resonance control device may further include:

[0099] The setting module is used to set the minimum speed to the grid-connected speed when the current operating state of the wind turbine is not within the preset resonant speed range and the vibration information does not meet the preset vibration conditions.

[0100] In some embodiments of this application, in order to accurately determine the vibration information of the wind turbine generator set, the acquisition module 610 may include:

[0101] The acquisition unit is used to acquire vibration data of the wind turbine generator set in different directions based on vibration sensors in different directions when it is determined that the current operating state of the wind turbine generator is within a preset resonant speed range.

[0102] A time-frequency conversion unit is used to perform time-frequency conversion on the vibration data to obtain time-frequency converted vibration data;

[0103] The determining unit is used to process the vibration data after time-frequency conversion to obtain the vibration information of the wind turbine generator set.

[0104] In some embodiments of this application, the vibration information includes vibration amplitude. To further accurately determine the vibration information of the wind turbine generator set, the determining unit may specifically be used for:

[0105] The maximum amplitude within the preset vibration frequency band of the vibration data after time-frequency conversion is calculated to obtain the vibration amplitude of the wind turbine generator.

[0106] The wind turbine resonance control device provided in this application embodiment can be used to execute the wind turbine resonance control method provided in the above method embodiments. Its implementation principle and technical effect are similar, and will not be described in detail here for the sake of brevity.

[0107] Based on the same inventive concept, this application also provides a wind turbine generator resonance controller.

[0108] Figure 7 This is a schematic diagram of the structure of a resonance controller for a wind turbine generator provided in an embodiment of this application. Figure 7 As shown, the resonance controller of a wind turbine generator set may include a processor 701 and a memory 702 storing computer programs or instructions.

[0109] Specifically, the processor 701 may include a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits that can be configured to implement the embodiments of the present invention.

[0110] Memory 702 may include mass storage for data or instructions. For example, and not limitingly, memory 702 may include a hard disk drive (HDD), floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 702 may include removable or non-removable (or fixed) media. Where appropriate, memory 702 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 702 is non-volatile solid-state memory. Memory may include read-only memory (ROM), random-access memory (RAM), disk storage media devices, optical storage media devices, flash memory devices, electrical, optical, or other physical / tangible memory storage devices. Therefore, typically, a memory includes one or more tangible (non-transitory) computer-readable storage media (e.g., memory devices) encoded with software including computer-executable instructions, and when the software is executed (e.g., by one or more processors), it is operable to perform the operations described in the wind turbine resonant control method provided in the above embodiments.

[0111] The processor 701 reads and executes computer program instructions stored in the memory 702 to implement any of the wind turbine generator resonance control methods in the above embodiments.

[0112] In one example, the resonance controller of the wind turbine generator may also include a communication interface 703 and a bus 710. Wherein, as Figure 7 As shown, the processor 701, memory 702, and communication interface 703 are connected through bus 710 and complete communication with each other.

[0113] The communication interface 703 is mainly used to realize communication between various modules, devices, units and / or devices in the embodiments of the present invention.

[0114] Bus 710 includes hardware, software, or both, that couples components of the resonant controller of a wind turbine generator set together. For example, and not limitingly, the bus may include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an Infinite Bandwidth Interconnect, a Low Pin Count (LPC) bus, a memory bus, a Microchannel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association Local (VLB) bus, or other suitable buses, or combinations of two or more of these. Where appropriate, bus 710 may include one or more buses. While specific buses are described and illustrated in embodiments of the invention, the invention contemplates any suitable bus or interconnect.

[0115] The resonance controller of this wind turbine can execute the wind turbine resonance control method in this embodiment of the invention, thereby achieving... Figure 2 The resonance control method for wind turbine generator sets is described.

[0116] Furthermore, in conjunction with the wind turbine resonance control method in the above embodiments, this invention can be implemented using a readable storage medium. This readable storage medium stores program instructions; when these program instructions are executed by a processor, they implement any of the wind turbine resonance control methods described in the above embodiments.

[0117] It should be clarified that the present invention is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of the present invention.

[0118] The functional blocks shown in the above-described structural diagram can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application-specific integrated circuits (ASICs), appropriate firmware, plug-ins, function cards, etc. When implemented in software, the elements of this invention are programs or code segments used to perform the required tasks. The programs or code segments can be stored on a machine-readable medium or transmitted over a transmission medium or communication link via data signals carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, radio frequency (RF) links, etc. Code segments can be downloaded via computer networks such as the Internet, intranets, etc.

[0119] It should also be noted that the exemplary embodiments mentioned in this invention describe methods or systems based on a series of steps or apparatus. However, this invention is not limited to the order of the steps described above; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0120] The aspects of this application have been described above with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block in the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that these instructions, executable via the processor of the computer or other programmable data processing apparatus, enable the implementation of the functions / actions specified in one or more blocks of the flowchart illustrations and / or block diagrams. Such a processor can be, but is not limited to, a general-purpose processor, a special-purpose processor, a special application processor, or a field-programmable logic circuit. It is also understood that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can also be implemented by dedicated hardware performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0121] The above description is merely a specific embodiment of the present invention. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, modules, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention.

Claims

1. A resonance control method for a wind turbine generator set, characterized in that, The method includes: Under the condition that the current operating state of the wind turbine is within the preset resonant speed range, the vibration information of the wind turbine generator set is acquired; If the vibration information is determined to meet the preset vibration conditions, the minimum speed of the wind turbine is adjusted so that the current operating state is outside the preset resonance speed range; The preset resonant speed range is the speed range corresponding to the resonant frequency band where the impeller and the tower resonate. Adjusting the minimum speed of the wind turbine to ensure that the current operating state is outside the preset resonant speed range includes: The minimum speed of the wind turbine generator set is changed from the grid-connected speed to the speed corresponding to the current operating state; The minimum rotational speed is increased at a first preset rate until the minimum rotational speed increases from the rotational speed corresponding to the current operating state to the upper limit of the preset resonance rotational speed range, so that the current operating state is outside the preset resonance rotational speed range; The grid-connected speed is the speed corresponding to the power generation capacity of the wind turbine generator as limited by the power grid.

2. The method according to claim 1, characterized in that, After the current operating state is outside the preset resonant speed range, the method further includes: The minimum rotational speed is reduced at a second preset rate until the minimum rotational speed is reduced to the grid-connected rotational speed, wherein the second preset rate and the first preset rate are from the same preset range.

3. The method according to claim 1, characterized in that, The method further includes: If the current operating state of the wind turbine is not within the preset resonance speed range and the vibration information does not meet the preset vibration condition, the minimum speed is set to the grid-connected speed; wherein, the preset vibration condition is that the vibration information is greater than the preset vibration information.

4. The method according to claim 1, characterized in that, The acquisition of vibration information of the wind turbine generator set includes: Vibration data of the wind turbine generator set in different directions are obtained based on vibration sensors in different directions; The vibration data is converted to a time-frequency value to obtain the time-frequency converted vibration data. The vibration data after time-frequency conversion is processed to obtain the vibration information of the wind turbine generator set.

5. The method according to claim 4, characterized in that, The vibration information includes the vibration amplitude; The process of processing the time-frequency converted vibration data to obtain the vibration information of the wind turbine generator set includes: The maximum amplitude within the preset vibration frequency band of the vibration data after time-frequency conversion is calculated to obtain the vibration amplitude of the wind turbine generator.

6. A resonance control device for a wind turbine generator set, characterized in that, The device includes: The acquisition module is used to acquire vibration information of the wind turbine generator set when it is determined that the current operating state of the wind turbine generator is within the preset resonant speed range. The first adjustment module is used to adjust the minimum speed of the wind turbine generator when the vibration information is determined to meet the preset vibration conditions, so that the current operating state is outside the preset resonance speed range; wherein, the preset resonance speed range is the speed range corresponding to the resonance frequency band where the impeller and the tower resonate; The first adjustment module is specifically used for: The minimum speed of the wind turbine generator set is changed from the grid-connected speed to the speed corresponding to the current operating state; The minimum rotational speed is increased at a first preset rate until the minimum rotational speed increases from the rotational speed corresponding to the current operating state to the upper limit of the preset resonance rotational speed range, so that the current operating state is outside the preset resonance rotational speed range; The grid-connected speed is the speed corresponding to the power generation capacity of the wind turbine generator as limited by the power grid.

7. A resonance controller for a wind turbine generator set, characterized in that, It includes a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions, when executed by the processor, implement the steps of the wind turbine resonance control method as described in any one of claims 1-5.

8. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the wind turbine generator resonance control method as described in any one of claims 1-5.

9. A computer program product, characterized in that, When the instructions in the computer program product are executed by the processor of the wind turbine resonant controller, the wind turbine resonant controller performs the wind turbine resonant control method as described in any one of claims 1-5.

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