Wind turbine unit shutdown control method, device, equipment and medium

Abstract

The application discloses a wind turbine shutdown control method, device, equipment and medium. A node state of a safety chain in a first wind turbine is acquired. Whether there is a triggered safety chain node in the safety chain is determined based on the node state. In response to the existence of the triggered safety chain node, a target of a shutdown control parameter corresponding to a target shutdown mode is acquired from an anti-tower-falling response condition. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates that the shutdown is performed in a mode of changing a pitch rate. The second shutdown mode indicates that the shutdown is performed in a mode of lifting or maintaining motor torque. The first wind turbine is controlled to shutdown based on the target of the shutdown control parameter. According to the embodiment, after a fault of triggering the safety chain occurs in the first wind turbine, the first wind turbine is controlled to quickly shutdown in the mode of changing the pitch rate and / or the mode of lifting or maintaining the motor torque, so that the occurrence of a tower-falling accident is effectively avoided.

Description

Technical Field

[0001] This application belongs to the field of wind power generation technology, and in particular relates to a method, device, equipment and medium for controlling the shutdown of wind turbine units. Background Technology

[0002] During the operation of wind turbines, tower collapse accidents may occur due to reasons such as blade damage and breakage or rotor overspeed. Tower collapse accidents of wind turbines usually cause serious economic losses and even casualties.

[0003] To avoid the adverse effects of wind turbine tower collapse, there is an urgent need for a solution that can effectively prevent wind turbine tower collapse. Summary of the Invention

[0004] This application provides a wind turbine shutdown control method, device, equipment, and medium that controls wind turbine shutdown based on anti-tower collapse response conditions, thereby improving the shutdown rate of wind turbines and effectively preventing tower collapse accidents.

[0005] In a first aspect, embodiments of this application provide a wind turbine shutdown control method, including:

[0006] Obtain the node status of the safety chain in the first wind turbine unit;

[0007] Determine whether there is a triggered security chain node in the security chain based on the node status;

[0008] In response to the existence of a triggered safety chain node, the target is to obtain the shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by changing the propeller rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque.

[0009] The first wind turbine unit is shut down based on the target control parameters for shutdown control.

[0010] Secondly, embodiments of this application provide a wind turbine shutdown control device, comprising:

[0011] The first acquisition module is used to acquire the node status of the safety chain in the first wind turbine unit;

[0012] The trigger determination module is used to determine whether there is a triggered security chain node in the security chain based on the node status;

[0013] The second acquisition module is used to acquire the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions in response to the existence of a triggered safety chain node. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by increasing the propeller recovery rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque.

[0014] The control module is used to control the shutdown of the first wind turbine unit based on the target shutdown control parameters.

[0015] Thirdly, embodiments of this application provide an electronic device, the device including: a processor and a memory storing computer program instructions;

[0016] When the processor executes computer program instructions, it implements the wind turbine shutdown control method as described in the first aspect.

[0017] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer program instructions, which, when executed by a processor, implement the wind turbine shutdown control method of the first aspect.

[0018] The wind turbine shutdown control method, apparatus, equipment, and medium provided in this embodiment acquire the node status of the safety chain in the first wind turbine, determine whether there is a triggered safety chain node based on the node status, and in response to the existence of a triggered safety chain node, obtain the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by changing the propeller rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque. The first wind turbine is shut down based on the target shutdown control parameters. According to this embodiment, after a safety chain triggering fault occurs in the first wind turbine, the first wind turbine is quickly shut down by changing the propeller rate and / or increasing or maintaining the motor torque, thereby effectively preventing tower collapse accidents. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments of this application will be briefly introduced below. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a flowchart illustrating the wind turbine shutdown control method provided in the embodiments of this application;

[0021] Figure 2This is a flowchart illustrating the method for setting anti-tower collapse response conditions provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the unit load simulation of the first wind turbine under target operating conditions based on shutdown control parameters provided in the embodiments of this application;

[0023] Figure 4 This is a schematic diagram of the torque setpoint curves corresponding to different versions of the test files provided in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of a process for generating anti-tower collapse response conditions corresponding to a first wind turbine, provided in an embodiment of this application.

[0025] Figure 6 This is a schematic diagram of the shutdown control of the first wind turbine based on the anti-tower collapse response conditions provided in the embodiments of this application;

[0026] Figure 7 This is a comparison diagram of the load controlled by the shutdown control method provided in this application embodiment and the load controlled by the traditional shutdown control method.

[0027] Figure 8 This is a schematic diagram of the structure of the wind turbine shutdown control device provided in the embodiments of this application;

[0028] Figure 9 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation

[0029] The features and exemplary embodiments of various aspects of this application will be described in detail below. To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only 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.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus that includes said element.

[0031] Before describing the technical solutions provided in the embodiments of this application, in order to facilitate understanding of the embodiments of this application, this application first specifically explains the problems existing in the prior art:

[0032] To meet market demands for lower cost per kilowatt-hour, large-megawatt and lightweight wind turbines are gradually becoming the mainstream design direction for grid-parity wind turbines. However, the combination of large megawatts and lightweight design dramatically increases the design risks of long, flexible blades for wind turbines. Cost-reducing wind turbine designs typically place higher demands on blade design, evaluation, production, transportation, and operation and maintenance.

[0033] However, wind turbine blades are frequently damaged during transportation, installation, and operation, leading to instability and, in severe cases, blade breakage. Blade breakage can cause tower collapse. In addition, rotor overspeeding and loss of control during wind turbine operation can also lead to tower collapse.

[0034] The inventors of this application discovered that the main causes of wind turbine tower collapse accidents include: the rotor stopping too slowly after the wind turbine malfunctions. Therefore, if the wind turbine can be stopped quickly when a malfunction occurs, tower collapse accidents can be effectively avoided.

[0035] In order to prevent wind turbine tower collapse accidents, this application provides a wind turbine shutdown control method, device, equipment and medium, which effectively prevents tower collapse accidents by controlling the wind turbine to shut down quickly.

[0036] The following section first introduces the wind turbine shutdown control method provided in the embodiments of this application.

[0037] See Figure 1 This is a flowchart illustrating a wind turbine shutdown control method provided in an embodiment of this application. Figure 1As shown, the method may include the following steps S110-S140.

[0038] S110. Obtain the node status of the safety chain in the first wind turbine unit.

[0039] The first wind turbine can be any wind turbine that uses the shutdown control method provided in the embodiments of this application.

[0040] A safety chain refers to a safety chain system that protects wind turbine generators. It is a hardware and software protection measure independent of the computer system. Using an inverse logic design, it connects potential fault nodes that could severely damage the wind turbine generator into a loop. If any node in the loop activates, it indicates a fault in the wind turbine generator, requiring shutdown. Therefore, during the operation of the first wind turbine generator, the status of the safety chain nodes can be used to determine whether a fault has occurred in the first wind turbine generator.

[0041] In a safety chain, the state of a node is divided into a closed state and an open state. Under normal circumstances, all nodes are in a closed state. If the state of any node switches to an open state, it indicates that a wind turbine failure has occurred.

[0042] As an example, during the operation of the first wind turbine, the switching signals of each node in the safety chain can be acquired, and the state of each node can be determined based on the switching signals. For example, for each node, if the switching signal of the node is "1", then the state of the node is determined to be closed; if the state of the node is "0", then the state of the node is determined to be open.

[0043] S120. Determine whether there is a triggered security chain node in the security chain based on the node status.

[0044] For each node in the safety chain, if the node is in a disconnected state, then the node is determined to be a triggered safety chain node. If there is a triggered safety chain node in the safety chain, then the first wind turbine unit has been determined to have a fault that triggers the safety chain, and therefore needs to be shut down.

[0045] As an example, based on the switch values ​​of each node in the acquired security chain, it is determined whether there is a node with a switch value of "0". If there is a node with a switch value of "0", then the node with a switch value of "0" is determined to be a triggered security chain node. If there is no node with a switch value of "0", then it is determined that there is no triggered security chain node.

[0046] Furthermore, if there is no triggered safety chain node in the safety chain, it means that there is no fault in the first wind turbine that could trigger the safety chain, and therefore the first wind turbine can be controlled to continue operating normally.

[0047] If it is determined that there is a triggered safety chain node in the safety chain, it means that the first wind turbine has experienced a safety chain triggering fault and needs to be shut down. Therefore, S130-S140 are executed to perform shutdown control.

[0048] S130. In response to the existence of a triggered safety chain node, obtain the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by changing the propeller rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque.

[0049] If a triggered safety chain node is found in the first wind turbine unit, it is determined that the first wind turbine unit has a fault that requires shutdown. At this time, the first wind turbine unit is controlled to shut down.

[0050] In this embodiment, when a triggered safety chain node exists in the first wind turbine, the first wind turbine is shut down based on pre-set anti-tower collapse response conditions. The anti-tower collapse response conditions include the target shutdown control parameters corresponding to the target shutdown mode. Based on this, when it is determined that a triggered safety chain node exists in the first wind turbine, that is, when there is a fault requiring shutdown, the first wind turbine can be shut down according to the target shutdown mode based on the target shutdown parameters.

[0051] The target shutdown method includes at least one of the first shutdown method and the second shutdown method. Both the first shutdown method and the second shutdown method are shutdown methods that can achieve rapid shutdown. Thus, controlling the first wind turbine to shut down according to the target shutdown method can achieve rapid shutdown, that is, quickly and completely shut down the rotor, thereby avoiding tower collapse accidents caused by the rotor shutting down too slowly.

[0052] The first shutdown method indicates that the wind turbine is shut down by changing the blade retraction rate. The blade retraction rate refers to the speed at which the wind turbine retracts its blades. When the wind turbine is in the retracted state, the turbine blades are perpendicular to the wind direction. At this time, the resistance of the turbine blades increases, the wind force affecting the wind turbine is reduced, and the rotational speed decreases, thereby achieving shutdown.

[0053] S140. Target control of the first wind turbine unit to shut down based on shutdown control parameters.

[0054] In this embodiment, the shutdown control parameters refer to the parameters that need to be controlled when controlling the first wind turbine to shut down according to the target shutdown method. The shutdown control parameters corresponding to the target shutdown method are related to the shutdown methods it includes. If the target shutdown method is the first shutdown method, then the shutdown control parameters corresponding to the target shutdown method are the shutdown control parameters corresponding to the first shutdown method. If the target shutdown method is the second shutdown method, then the shutdown control parameters corresponding to the target shutdown method are the shutdown control parameters corresponding to the second shutdown method. If the target shutdown method includes both the first and second shutdown methods, then the shutdown control parameters corresponding to the target shutdown method include both the shutdown control parameters corresponding to the first and second shutdown methods.

[0055] As an example, the shutdown control parameters corresponding to the first shutdown mode may include parameters related to propeller retrieval shutdown, such as the propeller retrieval rate value. The shutdown control parameters corresponding to the second shutdown mode may include parameters related to motor torque, such as the torque boost factor, the boost torque change rate value, the unit disconnection speed value, and the speed-torque curve.

[0056] In this embodiment, the target of the shutdown control parameter refers to the value that the shutdown control parameter needs to be set when performing shutdown control based on the shutdown control parameter.

[0057] When shutting down the first wind turbine based on the target of the shutdown control parameters, the value of the shutdown control parameters can be set based on the target of the shutdown control parameters. After the setting is completed, the first wind turbine can run according to the set shutdown control parameters, thus achieving rapid shutdown.

[0058] The wind turbine shutdown control method provided in this embodiment obtains the node status of the safety chain in the first wind turbine, determines whether there is a triggered safety chain node based on the node status, and in response to the existence of a triggered safety chain node, obtains the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by changing the propeller rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque. The first wind turbine is shut down based on the target shutdown control parameters. According to this embodiment, after a safety chain triggering failure occurs in the first wind turbine, the first wind turbine is quickly shut down by changing the propeller rate and / or increasing or maintaining the motor torque, thereby effectively avoiding tower collapse accidents.

[0059] As mentioned above, after the first wind turbine experiences a fault that triggers the safety chain, shutdown control is performed based on the anti-tower collapse response conditions. In order to enable timely shutdown control based on the anti-tower collapse response conditions, the anti-tower collapse response conditions can be preset.

[0060] In some embodiments, see Figure 2 The method for setting anti-tower collapse response conditions may include the following steps S210-S240.

[0061] S210. Obtain the target configuration information of the first wind turbine unit.

[0062] Among them, the target configuration information is the configuration information related to the anti-tower collapse response condition setting. It is mainly used to select the shutdown method that the first wind turbine can support as the target shutdown method from the first shutdown method and the second shutdown method based on the target configuration information.

[0063] As mentioned earlier, the first shutdown method indicates shutdown by changing the propeller recovery rate. Therefore, if the first wind turbine is shut down using the first shutdown method, it is necessary to ensure that the first wind turbine can adjust its propeller recovery rate. The second shutdown method indicates shutdown by increasing or maintaining the motor torque. Therefore, if the first wind turbine is shut down using the second shutdown method, it is necessary to ensure that the first wind turbine can meet the corresponding torque requirements. In view of this, the target configuration information may include information indicating whether the first wind turbine can adjust its propeller recovery rate and information indicating whether the first wind turbine meets the torque requirements.

[0064] As an example, wind turbines use a pitch control system for pitch control, and an electric pitch control system can adjust the pitch rate. Therefore, if an electric pitch control system is used in a wind turbine, it means that the wind turbine can adjust the pitch rate. The motor torque in a wind turbine is usually controlled by the converter. Based on this, the target configuration information may include: first information and second information, wherein the first information is used to indicate whether the first wind turbine uses an electric pitch control system, and the second information is used to indicate whether the converter of the first wind turbine meets the torque increase requirements of the motor.

[0065] S220. Based on the target configuration information, at least one of the first shutdown method and the second shutdown method is determined as the target shutdown method.

[0066] In this embodiment, it can be determined whether the first wind turbine can adjust the propeller rate value and whether the first wind turbine meets the torque requirement based on the target configuration information. According to the determined results, the shutdown method supported by the first wind turbine is selected as the target shutdown method from the first shutdown method and the second shutdown method.

[0067] S230. Determine the target of the shutdown control parameters corresponding to the target shutdown mode, wherein the unit load generated when the first wind turbine is shut down based on the target of the shutdown control parameters is less than or equal to the design load of the first wind turbine.

[0068] The shutdown control parameters corresponding to the first shutdown mode and the second shutdown mode are preset. Thus, once the target shutdown mode is determined, the shutdown control parameters corresponding to the target shutdown mode can be determined.

[0069] To ensure the safety of the first wind turbine, especially the tower, it is necessary to ensure that the load generated when the first wind turbine is shut down is less than or equal to the design load of the first wind turbine, based on the target control parameters of the shutdown control. The design load of the first wind turbine can be determined according to the actual situation.

[0070] As an example, the design load of the first wind turbine can be the design ultimate load of the first wind turbine.

[0071] S240. Generate anti-tower collapse response conditions based on the target of shutdown control parameters.

[0072] The anti-tower-fall response conditions include the triggering conditions for controlling the first wind turbine unit with the target shutdown control parameters corresponding to the target shutdown mode, and the control strategy corresponding to the triggering conditions, wherein the control strategy includes the target shutdown control parameters.

[0073] In practical applications, users can set at least one trigger condition as an anti-tower collapse response condition based on the target and actual needs of the shutdown control parameters.

[0074] As an example, anti-tower-fall response conditions may include one or more of the following trigger conditions:

[0075] The triggered safety chain node corresponds to the following fault types: non-stuck propeller fault, stuck propeller fault, and vibration switch triggered fault. Stuck propeller fault refers to a fault caused by a stuck propeller condition, non-stuck propeller fault refers to a fault caused by other conditions besides stuck propeller conditions, and vibration switch triggered fault refers to a fault caused by excessive effective acceleration of the wind turbine, resulting in the vibration switch disconnecting.

[0076] Furthermore, corresponding control strategies can be set for each triggering condition based on the target of the shutdown control parameters. The same control strategy can be set for different triggering conditions, or different control strategies can be set.

[0077] As an example, for a trigger condition where the triggered safety chain node corresponds to a fault type other than a jammed propeller or a vibration switch trigger, the corresponding control strategy could include directly controlling the first wind turbine to shut down based on the target shutdown control parameters. However, for a trigger condition where the triggered safety chain node corresponds to a jammed propeller, the corresponding control strategy could include determining the original propeller recovery rate based on the target propeller recovery rate value in the shutdown control parameters, and then controlling the first wind turbine to shut down based on this original propeller recovery rate value. The reason for this approach is that the target propeller recovery rate value is usually an increased propeller recovery rate value, which is larger than the original propeller recovery rate value before the increase. If the target propeller recovery rate value is used for shutdown control under jammed propeller conditions, it may result in excessive load, causing the load on the first wind turbine to exceed its design load. Therefore, to avoid overload problems under jammed propeller conditions, a dual-rate propeller recovery method is used to shut down the first wind turbine, achieving precise control of the turbine response and protecting the turbine's safety.

[0078] Using the above method, the anti-topply response conditions for the first wind turbine can be obtained based on its configuration, thus realizing the customized setting of the anti-topply response conditions.

[0079] In some embodiments, when the target configuration information includes first information and second information, determining at least one of the first shutdown method and the second shutdown method as the target shutdown method based on the target configuration information may include:

[0080] In response to the first information indicating that the first wind turbine adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine does not meet the torque increase requirements of the motor, the first shutdown mode is determined as the target shutdown mode.

[0081] In response to the first information indicating that the first wind turbine does not use an electric pitch system, and the second information indicating that the converter of the first wind turbine meets the torque boosting requirements of the motor, the second shutdown method is determined as the target shutdown method.

[0082] In response to a first information indicating that the first wind turbine adopts an electric pitch control system, and a second information indicating that the converter of the first wind turbine meets the torque boosting requirements of the motor, at least one of the first shutdown mode and the second shutdown mode is determined as the target shutdown mode.

[0083] If the first information indicates that the first wind turbine uses an electric pitch control system, it means that the first wind turbine can adjust the pitch recovery rate and therefore supports the first shutdown method for shutdown control. Conversely, if the first information indicates that the first wind turbine does not use an electric pitch control system, it means that the first wind turbine cannot adjust the pitch recovery rate and therefore does not support the first shutdown method for shutdown control. Similarly, if the second information indicates that the converter of the first wind turbine meets the torque increase requirement of the motor, it means that the first wind turbine supports the second shutdown method for shutdown control, and vice versa. In this way, the shutdown method supported by the first wind turbine can be set as the target shutdown method, thereby ensuring that the first wind turbine can perform shutdown control based on the target shutdown method.

[0084] In some embodiments, unit load simulation can be used to determine the target shutdown control parameters. Specifically, determining the target shutdown control parameters corresponding to the target shutdown mode may include the following steps:

[0085] Obtain the shutdown control parameters corresponding to the target shutdown method;

[0086] Based on the shutdown control parameters, the unit load of the first wind turbine was simulated under the target operating condition, and multiple load simulation results corresponding to the shutdown control parameter values ​​were obtained.

[0087] The target shutdown control parameters are determined based on multiple load simulation results.

[0088] Obtaining the shutdown control parameters corresponding to the target shutdown mode can be understood as initializing the shutdown control parameters so that they can be optimized based on the initialized parameters to obtain the target shutdown control parameters. Specifically, the shutdown control parameters can be initialized based on the original design parameters of the first wind turbine unit.

[0089] In this embodiment, the principle of the first shutdown method is to shut down the turbine by increasing or maintaining the propeller speed. Based on this, the propeller speed value can be initialized to a preset multiple of the original propeller speed value used by the first wind turbine. This preset multiple can be greater than or equal to 1. The principle of the second shutdown method is to shut down the turbine by increasing or maintaining the motor torque. Based on this, the torque increase multiple can be initialized to a value greater than or equal to 1, and the torque in the speed-torque curve can be initialized to a value greater than or equal to the original torque.

[0090] After obtaining the shutdown control parameters corresponding to the target shutdown mode, the unit load simulation of the first wind turbine under the target operating condition is performed based on the shutdown control parameters to obtain the load simulation results corresponding to the shutdown control parameters. The target shutdown control parameters are then determined based on the load simulation results.

[0091] To reduce loads during emergency abnormal states such as sudden severe blade damage without affecting other unit operating conditions, the target operating condition can include one or more of the following: blade fracture condition, fault triggering condition, and shutdown condition. Specifically, the blade fracture condition refers to the condition where a blade fracture occurs; the fault triggering condition refers to the condition where the blade is safe but the sensor triggers the fault erroneously; and the shutdown condition refers to various conditions requiring shutdown.

[0092] As an example, taking a target shutdown mode that includes both a first shutdown mode and a second shutdown mode, and using the propeller recovery rate, torque lift factor, lift torque change rate, unit disconnection speed, and speed-torque curve as the shutdown control parameters corresponding to the target shutdown mode, see [reference needed]. Figure 3 The load simulation of the first wind turbine under the target operating condition is performed based on the shutdown control parameters. The load simulation results corresponding to the shutdown control parameters can include: load simulation of the first wind turbine under the blade fracture condition, load simulation of the first wind turbine under the fault false trigger condition, and load simulation of the first wind turbine under the shutdown condition, thereby obtaining three sets of load simulation results corresponding to the three load simulations.

[0093] When performing load simulation under blade fracture conditions, the blade cross-section needs to be considered. However, the blade cross-section corresponding to blade fracture caused by different reasons is usually different. Therefore, when performing load simulation under blade fracture conditions, different blade cross-sections need to be obtained for different fracture causes. For example, for fracture caused by low blade safety factor, the "blade minimum safety factor cross-section" can be obtained for load simulation. For blade fracture caused by damage during blade transportation, the "blade transportation support point cross-section" can be obtained for load simulation. For blade fracture caused by damage during field operation, the "blade maximum field cross-section" can be obtained for load simulation.

[0094] For load simulation under fault-triggered conditions and shutdown conditions, the blades are usually in a normal state, so it is not necessary to obtain the blade cross-section.

[0095] After obtaining three sets of load simulation results, one or more of the following parameters are adjusted based on the three sets of load simulation results: turbine propeller recovery rate, torque lift factor, lift torque change rate, turbine disconnection speed, and speed-torque curve table. By optimizing and adjusting the target parameters, when the first wind turbine performs shutdown control based on the target shutdown control parameters, the unit load is below the design load, ensuring the safety of the unit.

[0096] In some embodiments, the target of the shutdown control parameters can be optimized iteratively. Specifically, determining the target of the shutdown control parameters based on load simulation results may include:

[0097] If any load simulation result in the load simulation results exceeds the design load, adjust the shutdown control parameters;

[0098] The adjusted shutdown control parameters are returned to the step of performing unit load simulation of the first wind turbine under the target operating condition based on the shutdown control parameters, until the first objective is met. The first objective includes that the multiple load simulation results corresponding to the adjusted shutdown control parameters are all less than or equal to the design load.

[0099] The shutdown control parameters that satisfy the first objective are determined as the target shutdown control parameters corresponding to the target shutdown mode.

[0100] In this embodiment, both the first and second shutdown methods are designed to achieve rapid shutdown. Generally, the higher the propeller recovery rate and the greater the motor torque, the faster the shutdown. Therefore, when adjusting the shutdown control parameters, a gradual increase can be adopted, and the step size of each adjustment can be set according to the actual situation.

[0101] By using the above method, iterative adjustments can quickly optimize the shutdown control parameter targets, thereby improving the efficiency of determining the shutdown control parameter targets.

[0102] In some embodiments, where the target shutdown method includes a first shutdown method and the shutdown control parameters corresponding to the target shutdown method include the propeller recovery rate value, in order to ensure that the first wind turbine can achieve the target of the shutdown control parameters, that is, to ensure that it is feasible to perform shutdown control on the first wind turbine based on the target of the shutdown control parameters, the following steps may be performed before determining the shutdown control parameters that satisfy the first target as the target of the shutdown control parameters corresponding to the target shutdown method:

[0103] The pitch capability of the first wind turbine was tested based on the pitch recovery rate value to determine whether the pitch capability of the first wind turbine could meet the pitch recovery rate value.

[0104] Among them, the pitch capability test of the first wind turbine based on the pitch recovery rate value refers to the pitch capability test of the first wind turbine based on the pitch recovery rate value in the shutdown control parameters that meet the first objective. The test method can adopt the existing pitch capability test method.

[0105] In this embodiment, the purpose of conducting the pitch capability test is primarily to determine whether the electric pitch system in the first wind turbine can output the pitch recovery rate value obtained through iterative optimization. If it can output the value, it is determined that the pitch capability of the first wind turbine can meet the pitch recovery rate value obtained through iterative optimization; otherwise, it is determined that the pitch capability of the first wind turbine cannot meet the pitch recovery rate value obtained through iterative optimization.

[0106] Accordingly, the shutdown control parameters that satisfy the first objective are determined as the targets of the shutdown control parameters corresponding to the target shutdown mode, including:

[0107] Since the pitch control capability of the first wind turbine can meet the pitch recovery rate value, the shutdown control parameters that meet the first objective are determined as the target shutdown control parameters corresponding to the target shutdown mode.

[0108] If the pitch control capability of the first wind turbine is determined to meet the pitch recovery rate value obtained by iterative optimization, and the shutdown control parameters obtained by iterative optimization are then set as the target shutdown control parameters, it can be ensured that the first wind turbine can achieve the target shutdown control parameters and avoid the situation of ineffective control.

[0109] If it is determined that the pitch capability of the first wind turbine cannot meet the pitch recovery rate value obtained through iterative optimization, the shutdown control parameters can be readjusted and iteratively optimized until the pitch capability of the first wind turbine can meet the pitch recovery rate value obtained through iterative optimization. In some embodiments, where the target shutdown method includes a second shutdown method, and the shutdown control parameters corresponding to the target shutdown method include the relationship between motor speed and torque, i.e., the speed-torque curve, in order to further ensure that the first wind turbine can achieve the target shutdown control parameters, before determining the shutdown control parameters that meet the first target as the target shutdown control parameters corresponding to the target shutdown method, the following steps can be performed first:

[0110] Based on the correspondence between speed and torque, a converter speed and torque capability boundary test was conducted on the first wind turbine to determine whether the converter based on the first wind turbine can achieve the correspondence between motor speed and torque.

[0111] Among them, the converter speed and torque capability boundary test of the first wind turbine unit based on the correspondence between speed and torque refers to the converter speed and torque capability boundary test of the first wind turbine unit based on the correspondence between speed and torque in the shutdown control parameters that meet the first objective.

[0112] In this embodiment, the purpose of conducting the converter speed and torque capability boundary test on the first wind turbine is to determine whether the converter based on the first wind turbine can achieve the correspondence between the motor speed and torque obtained through iterative optimization.

[0113] Since the actual shutdown torque capability of the first wind turbine cannot be known during testing, from the perspective of test safety, a test file can be set based on the correspondence between motor speed and torque obtained through iterative optimization during the test period, and the converter speed and torque capability boundary test can be carried out based on the test file.

[0114] As an example, iterative optimization yields a speed-torque curve table, which includes multiple speed-torque curves. Each curve corresponds to a set of motor speed and torque relationships. Based on this, when setting up test files, each speed-torque curve in the table can be used as the torque setpoint curve in the test file, arranged from low to high, resulting in multiple versions of the test file. Different versions of the test file correspond to different torque setpoint curves. Based on each test file, the converter undergoes speed-torque capability boundary testing to determine if its capability encompasses the speed-torque curve table. If the converter's capability does encompass the speed-torque curve table, then the converter of the first wind turbine unit is determined to achieve the motor speed-torque relationship; otherwise, the converter of the first wind turbine unit is determined not to achieve the motor speed-torque relationship.

[0115] As an example, see Figure 4 This is a schematic diagram of the torque given curves corresponding to different versions of the test file. The four curves correspond to the four versions of the test file. If the converter's capability can be determined to encompass these four curves through testing, it is determined that the converter of the first wind turbine can achieve the corresponding relationship between motor speed and torque. Otherwise, it is determined that the converter of the first wind turbine cannot achieve the corresponding relationship between motor speed and torque.

[0116] Accordingly, the shutdown control parameters that satisfy the first objective are determined as the targets of the shutdown control parameters corresponding to the target shutdown mode, including:

[0117] Since the converter based on the first wind turbine can achieve the correspondence between motor speed and torque, the shutdown control parameter value that satisfies the first objective is determined as the target shutdown control parameter for the target shutdown mode. Given that the converter can achieve the correspondence between motor speed and torque obtained through iterative optimization, determining the iteratively optimized shutdown control parameter as the target shutdown control parameter further ensures that the first wind turbine can achieve the target shutdown control parameter, avoiding situations where control is ineffective.

[0118] If it is determined that the converter cannot achieve the correspondence between motor speed and torque obtained through iterative optimization, the shutdown control parameters can be readjusted and iteratively optimized until the converter of the first wind turbine can achieve the correspondence between motor speed and torque. In some embodiments, before determining the shutdown control parameters that satisfy the first objective as the target shutdown control parameters corresponding to the target shutdown mode, the following steps can also be performed:

[0119] Based on the shutdown control parameters that meet the first objective, the current carrying capacity of the converter is simulated to determine whether the current carrying capacity of the converter can meet the current requirements when shutting down according to the shutdown control parameters.

[0120] The current carrying capacity of a converter refers to the maximum current that the converter can carry under safe operating conditions.

[0121] In practical applications, existing mature current carrying capacity simulation methods can be used to simulate the current carrying capacity of converters, and this embodiment does not make specific limitations on this.

[0122] In this embodiment, the purpose of simulating the current carrying capacity of the converter is primarily to determine whether the converter can carry the current flowing through it when shutdown control is performed based on shutdown control parameters that meet the first objective. If it is determined that it can carry the current, then the converter's current carrying capacity meets the current requirement when shutting down according to the shutdown control parameters. If it is determined that it cannot carry the current, then the converter's current carrying capacity does not meet the current requirement when shutting down according to the shutdown control parameters. If the converter's current carrying capacity does not meet the current requirement when shutting down according to the shutdown control parameters, directly performing shutdown control based on the shutdown control parameters may burn out the converter.

[0123] Accordingly, the shutdown control parameters that satisfy the first objective are determined as the target shutdown control parameters corresponding to the target shutdown method, and may include:

[0124] Once it is determined that the current carrying capacity of the converter can meet the current requirements when shutting down according to the shutdown control parameters, the shutdown control parameters that meet the first objective are then determined as the target shutdown control parameters corresponding to the target shutdown mode. This can prevent the converter from burning out when performing shutdown control based on the target shutdown control parameters, thus ensuring the safety of the converter.

[0125] If it is determined that the current carrying capacity of the converter cannot meet the current requirements when shutting down according to the shutdown control parameters, the shutdown control parameters can be readjusted and iteratively optimized until the pitch capability of the first wind turbine can meet the pitch recovery rate value obtained by the iterative optimization.

[0126] In some embodiments, in order to ensure that the first wind turbine can be shut down smoothly based on the shutdown control parameters, after determining the target of the shutdown control parameters, and before generating the anti-tower collapse response conditions based on the target of the shutdown control parameters, the following steps may be performed first:

[0127] The second wind turbine unit was determined, and the second wind turbine unit has the same specifications as the first wind turbine unit.

[0128] Based on the target of the shutdown control parameters, the anti-topply response condition of the second wind turbine is tested to determine whether the operation of the second wind turbine meets the first condition requirement.

[0129] Based on the shutdown control parameters, target anti-tower collapse response conditions are generated, including:

[0130] In response to the fact that the operation of the second wind turbine unit meets the first condition requirement, anti-tower collapse response conditions are generated based on the target parameters.

[0131] The test items for inspection can be set according to the actual situation, and may include one or more of the following tests:

[0132] The tests include: paddle recovery rate capability test; shutdown test based on the shutdown control parameters; shutdown boundary test based on the shutdown control parameters at different wind speeds; and wind turbine vibration test.

[0133] The first condition can be set according to the control effect to be achieved when controlling the first wind turbine based on the target of shutdown control parameters.

[0134] As an example, the first condition may include that when the second wind turbine is running based on the target of the shutdown control parameters, its effective acceleration is within a preset range, and its speed, power, torque and pitch angle are consistent with the specified values, wherein the preset range of effective acceleration and the specified values ​​of speed, power, torque and pitch angle can be set according to the target of the shutdown control parameters.

[0135] If the operation of the second wind turbine meets the first condition requirement, it means that the first wind turbine can achieve the desired control effect when it performs shutdown control based on the target shutdown control parameters.

[0136] Therefore, if the second wind turbine meets the first condition requirement, and the anti-tower collapse response condition is generated based on the target of the shutdown control parameters, it can be guaranteed that controlling the first wind turbine based on the target of the shutdown control parameters can achieve the desired control effect.

[0137] In some embodiments, after generating anti-tower-fall response conditions, the anti-tower-fall response conditions can be deployed in the first wind turbine, so that the first wind turbine can be shut down based on the anti-tower-fall response conditions.

[0138] As mentioned above, the anti-tower-fall response conditions can include different triggering conditions, each corresponding to a different fault type and control strategy. Therefore, when controlling the shutdown of the first wind turbine based on shutdown control parameters, the following can be included:

[0139] The fault type is determined based on the triggered security chain node;

[0140] Based on the fault type and shutdown control parameters, the first wind turbine unit is shut down.

[0141] Typically, different nodes in a security chain correspond to different fault types, and the correspondence between each node and the fault type is pre-set. Based on this, once the triggered security chain node is identified, the corresponding fault type can be determined.

[0142] Once the fault type is determined, the corresponding triggering conditions can be identified, and then the first wind turbine can be shut down based on the control strategy corresponding to the triggering conditions.

[0143] This method enables precise control of the first wind turbine unit, protecting its safety.

[0144] In some embodiments, the target shutdown method includes a first shutdown method, such that the target of the shutdown control parameters includes a target value for the propeller recovery rate. Fault types are typically categorized into jamming faults and non-jamming faults. Jamming faults are faults corresponding to jamming conditions, while non-jamming faults are faults caused by conditions other than jamming. Therefore, when controlling the shutdown of the first wind turbine based on the fault type and shutdown control parameters, the following can be included:

[0145] In response to a non-stuck propeller fault, the first wind turbine unit is shut down based on the target propeller recovery rate.

[0146] In response to a fault type of jammed propeller, the original value of the propeller recovery rate is determined based on the target value of the propeller recovery rate.

[0147] The shutdown of the first wind turbine is controlled based on the original value of the propeller recovery rate, and the target value of the propeller recovery rate is greater than the original value of the propeller recovery rate.

[0148] As an example, the original value of the paddle return rate can be determined by multiplying the target paddle return rate by a rate multiplier, where the rate multiplier is the ratio of the original paddle return rate to the target paddle return rate, and can be calculated in advance based on the original paddle return rate and the target paddle return rate.

[0149] In this embodiment, when a propeller jamming fault occurs, the original propeller recovery rate, which is lower than the target propeller recovery rate, is used for shutdown control. This avoids the problem of the unit load exceeding the unit's design load caused by using the target propeller recovery rate for shutdown control, thus protecting the unit's safety. In non-propeller jamming conditions, a larger target propeller recovery rate is used for shutdown control, which can achieve rapid propeller recovery shutdown and effectively prevent tower collapse accidents.

[0150] In some embodiments, if the target shutdown method includes a second shutdown method, the target shutdown control parameters include multiple sets of speed-torque correspondences. These multiple sets of speed-torque correspondences can be stored in the form of a speed-torque curve table. Based on this, controlling the shutdown of the first wind turbine unit based on the fault type and the target shutdown control parameters may include:

[0151] Find the speed and torque curve corresponding to the fault type from the speed and torque curve table, and control the first wind turbine to shut down based on the found speed and torque curve.

[0152] Different speed-torque curves correspond to different torque boosting factors. The torque boosting factor corresponding to each fault type can be set according to actual needs. Based on this, when looking for the speed-torque curve corresponding to a fault type, the speed-torque curve corresponding to the torque boosting factor corresponding to the fault type can be found.

[0153] The following example uses the wind turbine shutdown control method provided in the embodiments of this application, applied to a first wind turbine that employs an electric pitch system and whose converter meets the torque enhancement requirements of the motor.

[0154] When the target shutdown method includes both the first shutdown method and the second shutdown method, see [link to relevant documentation]. Figure 5 The process of generating the anti-topply response conditions for the first wind turbine unit can mainly include the following steps:

[0155] Generating and issuing unit load simulation, converter strategy testing, whole unit testing, and anti-tower collapse response conditions.

[0156] The unit load simulation and converter strategy test mainly correspond to the process of determining the target of the shutdown control parameters in the above embodiments. The whole unit test corresponds to the test of the second wind turbine after the target of the shutdown control parameters is determined. The generation and issuance of anti-tower collapse response conditions correspond to the process of generating anti-tower collapse response conditions based on the target of the shutdown control parameters. The implementation methods of each process can be referred to the relevant descriptions in the above embodiments. To avoid repetition, they will not be repeated here.

[0157] See Figure 6 This is a schematic diagram of the shutdown control of the first wind turbine unit based on the anti-tower collapse response conditions, as shown below. Figure 6 As shown, after the anti-tower collapse response condition is sent to the first wind turbine, and it is determined that the overall safety chain has been triggered, the first wind turbine is shut down based on the fault type and using the target of the shutdown control parameters.

[0158] See Figure 7 The figure shows a comparison between the load controlled by the shutdown control method provided in this application and the load controlled by the traditional shutdown control method. As can be seen from the figure, the shutdown control method provided in this application can achieve load reduction shutdown compared to the traditional shutdown control method. After the first wind turbine is severely damaged, it can effectively protect the safety of the first wind turbine tower and ensure that the first wind turbine does not collapse. This has a significant and beneficial impact on the safety of the unit, personnel, and the economy.

[0159] Based on the wind turbine shutdown control method provided in the above embodiments, this application also provides specific implementation methods of the wind turbine shutdown control device. Please refer to the following embodiments.

[0160] See Figure 8 The wind turbine shutdown control device provided in this application includes the following modules:

[0161] The first acquisition module 801 is used to acquire the node status of the safety chain in the first wind turbine unit;

[0162] Trigger determination module 802 is used to determine whether there is a triggered security chain node in the security chain based on the node status;

[0163] The second acquisition module 803 is used to acquire the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions in response to the existence of a triggered safety chain node. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by increasing the propeller recovery rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque.

[0164] Control module 804 is used to control the shutdown of the first wind turbine unit based on the target shutdown control parameters.

[0165] The wind turbine shutdown control device provided in this embodiment acquires the node status of the safety chain in the first wind turbine, determines whether there is a triggered safety chain node based on the node status, and in response to the existence of a triggered safety chain node, acquires the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by changing the propeller rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque. The device controls the shutdown of the first wind turbine based on the target shutdown control parameters. According to this embodiment, after a safety chain triggering failure occurs in the first wind turbine, the device controls the first wind turbine to shut down quickly by changing the propeller rate and / or increasing or maintaining the motor torque, thereby effectively preventing tower collapse accidents.

[0166] In some embodiments, the device may further include: an anti-collapse tower setting module, including:

[0167] The configuration acquisition submodule is used to obtain the node status of the safety chain in the first wind turbine unit before...

[0168] Obtain the target configuration information of the first wind turbine unit;

[0169] The target shutdown method determination submodule is used to determine at least one of the first shutdown method and the second shutdown method as the target shutdown method based on the target configuration information;

[0170] The parameter target determination submodule is used to determine the target of the shutdown control parameters corresponding to the target shutdown mode. The unit load generated when the first wind turbine is shut down based on the target of the shutdown control parameters is less than or equal to the design load of the first wind turbine.

[0171] The response condition generation submodule is used to generate anti-tower collapse response conditions based on the target shutdown control parameters.

[0172] In some embodiments, the target configuration information includes first information and second information. The first information is used to indicate whether the first wind turbine adopts an electric pitch control system, and the second information is used to indicate whether the converter of the first wind turbine meets the torque increase requirements of the motor. The target shutdown method determination submodule is specifically used for:

[0173] In response to the first information indicating that the first wind turbine adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine does not meet the torque increase requirements of the motor, the first shutdown mode is determined as the target shutdown mode.

[0174] In response to the first information indicating that the first wind turbine does not use an electric pitch system, and the second information indicating that the converter of the first wind turbine meets the torque boosting requirements of the motor, the second shutdown method is determined as the target shutdown method.

[0175] In response to a first information indicating that the first wind turbine adopts an electric pitch control system, and a second information indicating that the converter of the first wind turbine meets the torque boosting requirements of the motor, at least one of the first shutdown mode and the second shutdown mode is determined as the target shutdown mode.

[0176] In some embodiments, the parameter target determination submodule includes:

[0177] The acquisition unit is used to acquire the shutdown control parameters corresponding to the target shutdown mode;

[0178] The load simulation unit is used to perform load simulation on the first wind turbine under the target operating condition based on the shutdown control parameters, and obtain the load simulation results corresponding to the shutdown control parameters.

[0179] The target operating conditions include one or more of the following: blade breakage, fault triggering, and shutdown.

[0180] The target determination unit is used to determine the target of the shutdown control parameters based on the load simulation results.

[0181] In some embodiments, the target determination unit is specifically used for:

[0182] If any load simulation result in the load simulation results exceeds the design load, adjust the shutdown control parameters;

[0183] The adjusted shutdown control parameters are returned to the step of performing unit load simulation of the first wind turbine under the target operating condition based on the shutdown control parameters, until the target of multiple load simulation results corresponding to the adjusted shutdown control parameters are all less than or equal to the design load is met.

[0184] The shutdown control parameters that meet the target are defined as the target shutdown control parameters corresponding to the target shutdown mode.

[0185] In some embodiments, the shutdown control parameters of the first shutdown mode include the propeller recovery rate value. Before determining the shutdown control parameters that satisfy the target as the target shutdown control parameters corresponding to the target shutdown mode, the target determination unit is further configured to:

[0186] The pitch capability of the first wind turbine was tested based on the pitch recovery rate value to determine whether the pitch capability of the first wind turbine could meet the pitch recovery rate value.

[0187] Accordingly, the shutdown control parameters that meet the objectives are defined as the targets for the shutdown control parameters corresponding to the target shutdown method, including:

[0188] In response to the fact that the pitch control capability of the first wind turbine unit can meet the pitch recovery rate value, the target of the adjusted shutdown control parameters is determined as the target of the shutdown control parameters corresponding to the target shutdown mode.

[0189] In some embodiments, the shutdown control parameters of the second shutdown mode include the correspondence between motor speed and torque. Before determining the shutdown control parameters that satisfy the target as the target shutdown control parameters corresponding to the target shutdown mode, the target determination unit is further configured to:

[0190] Based on the correspondence between speed and torque, the converter speed and torque capability boundary test of the first wind turbine was carried out to determine whether the converter based on the first wind turbine can realize the correspondence between motor speed and torque.

[0191] Accordingly, the shutdown control parameters that meet the objectives are defined as the targets for the shutdown control parameters corresponding to the target shutdown method, including:

[0192] In response to the fact that the converter based on the first wind turbine can realize the correspondence between motor speed and torque, the adjusted shutdown control parameter value is determined as the target shutdown control parameter corresponding to the target shutdown mode.

[0193] In some embodiments, the anti-collapse tower setting module further includes:

[0194] The whole-machine testing submodule is used to generate anti-tower collapse response conditions based on the target shutdown control parameters before...

[0195] The second wind turbine unit was determined, and the second wind turbine unit has the same specifications as the first wind turbine unit.

[0196] Based on the target of the shutdown control parameters, the anti-topply response condition of the second wind turbine is tested to determine whether the second wind turbine meets the first condition requirement.

[0197] Accordingly, the response condition generation submodule is used for:

[0198] In response to the second wind turbine meeting the first condition requirement, anti-tower collapse response conditions are generated based on the target of the shutdown control parameters.

[0199] In some embodiments, the inspection test includes one or more of the following tests:

[0200] The tests included: propeller rate capability testing, shutdown testing based on shutdown control parameters, shutdown boundary testing based on shutdown control parameters at different wind speeds, and wind turbine vibration testing.

[0201] In some embodiments, the control module 804 may include:

[0202] The fault type determination submodule is used to determine the fault type based on the triggered security chain node.

[0203] The control submodule is used to control the shutdown of the first wind turbine unit based on the fault type and the target shutdown control parameters.

[0204] In some embodiments, the targets of the shutdown control parameters include a target value for the propeller recovery rate, and the fault types are divided into propeller jamming faults and non-propeller jamming faults. The control submodule is specifically used for:

[0205] In response to a non-stuck propeller fault, the first wind turbine unit is shut down based on the target propeller recovery rate.

[0206] In response to a fault type of jammed propeller, the original value of the propeller recovery rate is determined based on the target value of the propeller recovery rate.

[0207] The shutdown of the first wind turbine is controlled based on the original value of the propeller recovery rate, and the target value of the propeller recovery rate is greater than the original value of the propeller recovery rate.

[0208] The wind turbine shutdown control device provided in this application embodiment can achieve... Figures 1 to 7 The various processes implemented in the method implementation examples will not be described again here to avoid repetition.

[0209] Figure 9 A schematic diagram of the hardware structure of the electronic device provided in an embodiment of this application is shown.

[0210] The electronic device may include a processor 901 and a memory 902 storing computer program instructions.

[0211] Specifically, the processor 901 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 this application.

[0212] Memory 902 may include a large-capacity memory for data or instructions. For example, and not limitingly, memory 902 may include a hard disk drive (HDD), a floppy disk drive, flash memory, optical disk, magneto-optical disk, magnetic tape, or a Universal Serial Bus (USB) drive, or a combination of two or more of these. Where appropriate, memory 902 may include removable or non-removable (or fixed) media. Where appropriate, memory 902 may be internal or external to the integrated gateway disaster recovery device. In a particular embodiment, memory 902 is non-volatile solid-state memory. Memory 902 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. Thus, typically, memory 902 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 can perform the operations described in any of the wind turbine shutdown control methods in the above embodiments.

[0213] The processor 901 reads and executes computer program instructions stored in the memory 902 to implement any of the wind turbine shutdown control methods in the above embodiments.

[0214] In one example, the electronic device may also include a communication interface 903 and a bus 910. Wherein, as... Figure 9 As shown, the processor 901, memory 902, and communication interface 903 are connected through bus 910 and complete communication with each other.

[0215] The communication interface 903 is mainly used to realize communication between various modules, devices, units and / or equipment in the embodiments of this application.

[0216] Bus 910 includes hardware, software, or both, that couples components of an online data traffic metering device 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 910 may include one or more buses. Although specific buses are described and illustrated in embodiments of this application, this application contemplates any suitable bus or interconnect.

[0217] Furthermore, in conjunction with the wind turbine shutdown control method in the above embodiments, this application embodiment can provide a computer storage medium for implementation. This computer storage medium stores computer program instructions; when these computer program instructions are executed by a processor, they implement any of the wind turbine shutdown control methods in the above embodiments.

[0218] It should be clarified that this application 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 this application 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 this application.

[0219] 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 application are programs or code segments used to perform the required tasks. 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 on 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.

[0220] It should also be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; 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.

[0221] The aspects of this disclosure 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 disclosure. 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 special-purpose hardware performing the specified functions or actions, or can be implemented by a combination of special-purpose hardware and computer instructions.

[0222] The above description is merely a specific implementation of this application. 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 this application 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 this application, and these modifications or substitutions should all be covered within the protection scope of this application.

Claims

1. A method for controlling the shutdown of a wind turbine generator set, characterized in that, include: Obtain the node status of the safety chain in the first wind turbine unit; Based on the node status, determine whether there is a triggered security chain node in the security chain; In response to the existence of a triggered safety chain node, the target is to obtain the shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by changing the propeller rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque. Based on the target control parameters of the shutdown control, the first wind turbine unit is shut down; Before obtaining the node status of the safety chain in the first wind turbine, the method further includes: Obtain the target configuration information of the first wind turbine; the target configuration information includes information that indicates whether the first wind turbine can adjust the paddle recovery rate and information that indicates whether the first wind turbine meets the torque increase requirement. Based on the target configuration information, at least one of the first shutdown method and the second shutdown method is determined as the target shutdown method; The target of the shutdown control parameters corresponding to the target shutdown mode is determined, wherein the unit load generated when the first wind turbine is shut down is less than or equal to the design load of the first wind turbine based on the target of the shutdown control parameters. The anti-tower collapse response conditions are generated based on the target of the shutdown control parameters.

2. The method according to claim 1, characterized in that, The target configuration information includes first information and second information. The first information indicates whether the first wind turbine adopts an electric pitch control system, and the second information indicates whether the converter of the first wind turbine meets the torque increase requirement of the motor. The step of determining at least one of the first shutdown method and the second shutdown method as the target shutdown method based on the target configuration information includes: In response to the first information indicating that the first wind turbine adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine does not meet the torque increase requirements of the motor, the first shutdown method is determined as the target shutdown method. In response to the first information indicating that the first wind turbine does not use an electric pitch system, and the second information indicating that the converter of the first wind turbine meets the torque boosting requirements of the motor, the second shutdown method is determined as the target shutdown method. In response to the first information indicating that the first wind turbine adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine meets the torque increase requirements of the motor, at least one of the first shutdown method and the second shutdown method is determined as the target shutdown method.

3. The method according to claim 2, characterized in that, The objective of determining the shutdown control parameters corresponding to the target shutdown mode includes: Obtain the shutdown control parameters corresponding to the target shutdown method; Based on the shutdown control parameters, the first wind turbine is subjected to load simulation under the target operating condition to obtain the load simulation results corresponding to the shutdown control parameters. The target operating condition includes one or more of the following: blade breakage, fault triggering, and shutdown. The target of the shutdown control parameters is determined based on the load simulation results.

4. The method according to claim 3, characterized in that, The objective of determining the shutdown control parameters based on the load simulation results includes: If any load simulation result in the load simulation results is greater than the design load, the shutdown control parameters are adjusted. The adjusted shutdown control parameters are returned to the step of performing unit load simulation on the first wind turbine under the target operating condition based on the shutdown control parameters, until the first objective is met. The first objective includes that the load simulation results corresponding to the adjusted shutdown control parameters are all less than or equal to the design load. The shutdown control parameters that satisfy the first objective are determined as the target shutdown control parameters corresponding to the target shutdown mode.

5. The method according to claim 4, characterized in that, The shutdown control parameters of the first shutdown mode include the propeller recovery rate value. Before determining the shutdown control parameters that satisfy the first objective as the target shutdown control parameters corresponding to the target shutdown mode, the method further includes: The pitch capability of the first wind turbine is tested based on the pitch recovery rate value to determine whether the pitch capability of the first wind turbine can meet the pitch recovery rate value. The goal of determining the shutdown control parameters that satisfy the first objective as the shutdown control parameters corresponding to the target shutdown mode includes: In response to the fact that the pitch control capability of the first wind turbine can meet the pitch recovery rate value, the shutdown control parameters that meet the first objective are determined as the target shutdown control parameters corresponding to the target shutdown mode.

6. The method according to claim 4, characterized in that, The shutdown control parameters of the second shutdown mode include the correspondence between motor speed and torque. Before determining the shutdown control parameters that satisfy the first objective as the target shutdown control parameters corresponding to the target shutdown mode, the method further includes: Based on the correspondence between the speed and torque, a converter speed and torque capability boundary test is performed on the first wind turbine to determine whether the converter based on the first wind turbine can achieve the correspondence between the motor speed and torque. The goal of determining the shutdown control parameters that satisfy the first objective as the shutdown control parameters corresponding to the target shutdown mode includes: In response to the fact that the converter based on the first wind turbine can realize the correspondence between the motor speed and torque, the shutdown control parameter value that satisfies the first objective is determined as the target shutdown control parameter corresponding to the target shutdown mode.

7. The method according to claim 3, characterized in that, Before generating the anti-tower-fall response condition based on the shutdown control parameters, the method further includes: A second wind turbine unit is identified, and the second wind turbine unit has the same specifications as the first wind turbine unit. Based on the target of the shutdown control parameters, the anti-topply response condition of the second wind turbine is tested to determine whether the second wind turbine meets the first condition requirement. The generation of the anti-tower collapse response conditions based on the shutdown control parameters includes: In response to the second wind turbine meeting the first condition requirement, the anti-tower-fall response condition is generated based on the target of the shutdown control parameters.

8. The method according to claim 7, characterized in that, The inspection test includes one or more of the following tests: The tests include: paddle recovery rate capability test; shutdown test based on the shutdown control parameters; shutdown boundary test based on the shutdown control parameters at different wind speeds; and wind turbine vibration test.

9. The method according to claim 1, characterized in that, The target control of shutting down the first wind turbine based on the shutdown control parameters includes: The fault type is determined based on the triggered security chain node; Based on the fault type and the target of the shutdown control parameters, the first wind turbine is controlled to shut down.

10. The method according to claim 9, characterized in that, The targets of the shutdown control parameters include a target value for the propeller recovery rate, and the fault types are divided into propeller jamming faults and non-propeller jamming faults. The shutdown control of the first wind turbine based on the fault type and the targets of the shutdown control parameters includes: In response to the fault type being a non-stuck propeller fault, the first wind turbine is shut down based on the target propeller recovery rate value; In response to the fault type being a stuck propeller fault, the original value of the propeller recovery rate is determined based on the target value of the propeller recovery rate; The first wind turbine is shut down based on the original value of the propeller recovery rate, wherein the target value of the propeller recovery rate is greater than the original value of the propeller recovery rate.

11. A wind turbine shutdown control device, characterized in that, include: The first acquisition module is used to acquire the node status of the safety chain in the first wind turbine unit; The trigger determination module is used to determine whether there is a triggered security chain node in the security chain based on the node status. The second acquisition module is used to acquire the target shutdown control parameters corresponding to the target shutdown mode from the anti-tower collapse response conditions in response to the existence of a triggered safety chain node. The target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode. The first shutdown mode indicates shutdown by increasing the propeller recovery rate, and the second shutdown mode indicates shutdown by increasing or maintaining the motor torque. The control module is used to control the first wind turbine to shut down based on the target shutdown control parameters; Anti-collapse tower setting module, including: The configuration acquisition submodule is used to acquire the target configuration information of the first wind turbine; the target configuration information includes information that indicates whether the first wind turbine can adjust the paddle recovery rate and information that indicates whether the first wind turbine meets the torque increase requirement. The target shutdown method determination submodule is used to determine at least one of the first shutdown method and the second shutdown method as the target shutdown method based on the target configuration information; The parameter target determination submodule is used to determine the target of the shutdown control parameters corresponding to the target shutdown mode, wherein the unit load generated when the first wind turbine is shut down based on the target of the shutdown control parameters is less than or equal to the design load of the first wind turbine. The response condition generation submodule is used to generate the anti-tower collapse response conditions based on the target of the shutdown control parameters.

12. An electronic device, characterized in that, The device includes: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, it implements the wind turbine shutdown control method as described in any one of claims 1-10.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer program instructions, which, when executed by a processor, implement the wind turbine shutdown control method as described in any one of claims 1-10.

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