Shutdown control method, device and equipment for wind turbine generator and medium

Abstract

The invention discloses a wind turbine generator shutdown control method and device, equipment and a medium, and the method comprises the steps: obtaining a node state of a safety chain in a first wind turbine generator, determining whether a triggered safety chain node exists in the safety chain or not based on the node state, and responding to the existence of the triggered safety chain node, a target of a shutdown control parameter corresponding to a target shutdown mode is obtained from the tower falling prevention response condition, the target shutdown mode comprises at least one of a first shutdown mode and a second shutdown mode, and the first shutdown mode indicates that shutdown is conducted in the mode of changing the propeller collection rate; the second shutdown mode indicates that shutdown is performed in a mode of increasing or maintaining the motor torque, and the first wind turbine generator is controlled to stop based on the target of the shutdown control parameters. According to the embodiment of the invention, after the fault of triggering the safety chain occurs in the first wind turbine generator, the first wind turbine generator is controlled to quickly stop according to the mode of changing the paddle retracting speed and / or the mode of increasing or maintaining the motor torque, so that the occurrence of tower falling accidents is effectively avoided.

Description

Technical Field

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

[0002] During the operation of wind turbines, tower collapse accidents may occur due to blade damage and breakage, impeller overspeeding, etc. Wind turbine tower collapse accidents usually cause serious economic losses and even cause casualties.

[0003] In order to avoid the adverse effects caused by the collapse of wind turbine towers, a solution that can effectively prevent the collapse of wind turbine towers is urgently needed. Summary of the invention

[0004] The embodiments of the present application provide a method, device, equipment and medium for controlling the shutdown of a wind turbine generator set, which controls the shutdown of the wind turbine generator set based on anti-tower collapse response conditions, can increase the shutdown rate of the wind turbine generator set, and effectively prevent tower collapse accidents.

[0005] In a first aspect, an embodiment of the present application provides a wind turbine shutdown control method, comprising:

[0006] Obtaining the node status of the safety chain in the first wind turbine generator set;

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

[0008] In response to the presence of a triggered safety chain node, a target of a shutdown control parameter corresponding to a target shutdown mode is obtained from a tower collapse prevention response condition, wherein the target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode, wherein the first shutdown mode indicates shutdown by changing a propeller retraction rate, and the second shutdown mode indicates shutdown by increasing or maintaining a motor torque;

[0009] The first wind turbine generator set is shut down based on the target control of the shutdown control parameter.

[0010] In a second aspect, an embodiment of the present application provides a wind turbine shutdown control device, comprising:

[0011] A first acquisition module, used to acquire the node status of the safety chain in the first wind turbine generator set;

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

[0013] a second acquisition module, for obtaining, in response to the existence of a triggered safety chain node, a target of a shutdown control parameter corresponding to a target shutdown mode from an anti-tower collapse response condition, wherein the target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode, wherein the first shutdown mode indicates shutdown by increasing a propeller retraction rate, and the second shutdown mode indicates shutdown by increasing or maintaining a motor torque;

[0014] The control module is used to control the first wind turbine generator set to shut down based on the target of the shutdown control parameter.

[0015] In a third aspect, an embodiment of the present application provides an electronic device, the device comprising: a processor and a memory storing computer program instructions;

[0016] When the processor executes the computer program instructions, the wind turbine shutdown control method of the first aspect is implemented.

[0017] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, the wind turbine shutdown control method of the first aspect is implemented.

[0018] The wind turbine shutdown control method, device, equipment and medium provided in the present embodiment obtain the node status of the safety chain in the first wind turbine, determine whether there is a triggered safety chain node in the safety chain based on the node status, and in response to the existence of the triggered safety chain node, obtain the target of the shutdown control parameter corresponding to the target shutdown method from the anti-tower collapse response condition, the target shutdown method includes at least one of the first shutdown method and the second shutdown method, the first shutdown method indicates the shutdown method by changing the blade retraction rate, and the second shutdown method indicates the shutdown method by increasing or maintaining the motor torque, and the first wind turbine is shut down based on the target of the shutdown control parameter. According to the present embodiment, after a fault occurs in the first wind turbine that triggers the safety chain, the first wind turbine is controlled to shut down quickly by changing the blade retraction rate and / or increasing or maintaining the motor torque, thereby effectively avoiding the occurrence of a tower collapse accident. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0020] Figure 1 It is a flow chart of a wind turbine shutdown control method provided in an embodiment of the present application;

[0021] Figure 2It is a flow chart of a method for setting a tower collapse prevention response condition provided in an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of performing unit load simulation on a first wind turbine under a target operating condition based on shutdown control parameters provided in an embodiment of the present application;

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

[0024] Figure 5 It is a schematic diagram of a flow chart of generating a tower collapse prevention response condition corresponding to a first wind turbine generator set provided in an embodiment of the present application;

[0025] Figure 6 is a schematic diagram of performing shutdown control on a first wind turbine generator set based on an anti-tower collapse response condition provided in an embodiment of the present application;

[0026] Figure 7 It is a comparison diagram of the load of shutdown control performed using the shutdown control method provided in the embodiment of the present application and the load of shutdown control performed using the traditional shutdown control method;

[0027] Figure 8 It is a structural schematic diagram of a wind turbine shutdown control device provided in an embodiment of the present application;

[0028] Fig. 9 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

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

[0032] In order to meet the market demand for reducing the cost of electricity, large-megawatt and lightweight wind turbines have gradually become the mainstream design direction of affordable wind turbines. However, the combination of large-megawatt and lightweight has sharply increased the design risk of long and flexible blades of wind turbines. The design of wind turbines to reduce costs usually requires higher requirements for the design, evaluation, production, transportation and operation and maintenance of blades.

[0033] However, at present, wind turbine blades are often damaged during transportation, hoisting, and operation, resulting in unstable operation of wind turbines, and even blade breakage in severe cases. Blade breakage may lead to tower collapse accidents. In addition, overspeeding and loss of control of the impeller during the operation of wind turbines may also lead to tower collapse accidents.

[0034] The inventors of the present application have discovered that the causes of wind turbine tower collapse accidents mainly include: the impeller completely shuts down too slowly after a wind turbine failure. Therefore, if the wind turbine can be controlled to shut down quickly when a failure occurs, the tower collapse accident can be effectively avoided.

[0035] Based on this, in order to avoid tower collapse accidents of wind turbines, the embodiments of the present application provide a wind turbine shutdown control method, device, equipment and medium, which effectively prevent tower collapse accidents by controlling the wind turbine to shut down quickly.

[0036] The following first introduces the wind turbine shutdown control method provided in the embodiment of the present application.

[0037] See also Figure 1 , is a flow chart of a wind turbine shutdown control method provided in an embodiment of the present application, such as 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 generator system.

[0039] The first wind turbine generator set may be any wind turbine generator set that uses the shutdown control method provided in the embodiments of the present application.

[0040] The safety chain refers to the safety chain system that protects the wind turbine. It is a software and hardware protection measure independent of the computer system. The reverse logic design is adopted to connect the fault nodes that may cause serious damage to the wind turbine in series into a loop. Once any of the nodes is activated, it means that the wind turbine has failed and needs to be shut down. Therefore, during the operation of the first wind turbine, it can be determined whether the first wind turbine has failed by obtaining the node status of the safety chain.

[0041] The states of the nodes in the safety chain, that is, the node states, are divided into closed states and disconnected states. Under normal circumstances, the states of all nodes are closed states. For any node, if the state of the node switches to a disconnected state, it indicates that a wind turbine failure has occurred.

[0042] As an example, during the operation of the first wind turbine, the switch value of each node in the safety chain can be obtained, and the state of each node can be determined according to the switch value. For example, for each node, if the switch value of the node is "1", the state of the node is determined to be a closed state, and if the node state of the node is "0", the state of the node is determined to be an open state.

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

[0044] For each node in the safety chain, if the state of the node is disconnected, the node is determined to be a triggered safety chain node. When there is a triggered safety chain node in the safety chain, it is determined that a fault that triggers the safety chain has occurred in the first wind turbine generator set, and therefore it needs to be shut down.

[0045] As an example, based on the acquired switching quantity of each node in the safety chain, it is determined whether there is a node with a switching quantity of "0". In response to the existence of a node with a switching quantity of "0", the node with a switching quantity of "0" is determined as a triggered safety chain node. In response to the absence of a node with a switching quantity of "0", it is determined that there is no triggered safety chain node.

[0046] Furthermore, when there is no triggered safety chain node in the safety chain, it means that there is no fault in the first wind turbine generator set that triggers the safety chain, and thus the first wind turbine generator set can be controlled to continue to operate normally.

[0047] When it is determined that there is a triggered safety chain node in the safety chain, it means that a fault that triggers the safety chain has occurred in the first wind turbine generator set and shutdown processing is required, so S130-S140 is continued to be executed to perform shutdown control.

[0048] S130. In response to the existence of a triggered safety chain node, a target of a shutdown control parameter corresponding to a target shutdown method is obtained from an anti-tower collapse response condition, the target shutdown method includes at least one of a first shutdown method and a second shutdown method, the first shutdown method indicates shutdown by changing a propeller retraction rate, and the second shutdown method indicates shutdown by increasing or maintaining motor torque.

[0049] When it is determined that there is a triggered safety chain node in the first wind turbine generator set, it is determined that there is a fault in the first wind turbine generator set that requires shutdown processing, and the first wind turbine generator set is controlled to shut down.

[0050] In this embodiment, when there is a triggered safety chain node in the first wind turbine generator set, the first wind turbine generator set is controlled to shut down based on a preset anti-tower collapse response condition. The anti-tower collapse response condition includes a target of a shutdown control parameter corresponding to a target shutdown method. Based on this, when it is determined that there is a triggered safety chain node in the first wind turbine generator set, that is, there is a fault requiring shutdown, the first wind turbine generator set can be controlled to shut down according to the target shutdown method based on the target of the target shutdown parameter.

[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. In this way, controlling the first wind turbine set to shut down according to the target shutdown method can achieve rapid shutdown, that is, quickly shutting down the impeller completely, thereby avoiding the tower collapse accident caused by the impeller shutting down too slowly.

[0052] Among them, the first shutdown mode 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 blades are perpendicular to the wind direction. At this time, the resistance of the blades increases, the wind turbine is less affected by the wind, and the rotation speed slows down, thereby achieving shutdown.

[0053] S140. Shut down the first wind turbine generator set based on the target of the shutdown control parameter.

[0054] In this embodiment, the shutdown control parameter refers to the parameter that needs to be controlled when the first wind turbine is controlled to shut down according to the target shutdown mode. The shutdown control parameter corresponding to the target shutdown mode is related to the shutdown mode it includes. If the target shutdown mode is the first shutdown mode, the shutdown control parameter corresponding to the target shutdown mode is the shutdown control parameter corresponding to the first shutdown mode. If the target shutdown mode is the second shutdown mode, the shutdown control parameter corresponding to the target shutdown mode is the shutdown control parameter corresponding to the second shutdown mode. If the target shutdown mode includes the first shutdown mode and the second shutdown mode, the shutdown control parameter corresponding to the target shutdown mode includes the shutdown control parameter corresponding to the first shutdown mode and the shutdown control parameter corresponding to the second shutdown mode.

[0055] As an example, the shutdown control parameters corresponding to the first shutdown mode may include parameters related to the propeller retraction shutdown, such as the propeller retraction rate value; the shutdown control parameters corresponding to the second shutdown mode may include parameters related to the motor torque, such as the torque lift multiple, the lift torque change rate value, the unit off-grid speed value, and the speed-torque curve.

[0056] In this embodiment, the target of the shutdown control parameter refers to the value to be set for the shutdown control parameter when shutdown control is performed based on the shutdown control parameter.

[0057] When the first wind turbine is shut down based on the target control of the shutdown control parameter, the value of the shutdown control parameter can be set based on the target of the shutdown control parameter. After the setting is completed, the first wind turbine can operate according to the set shutdown control parameter, so that a quick shutdown can be achieved.

[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 in the safety chain based on the node status, and in response to the existence of the triggered safety chain node, obtains the target of the shutdown control parameter corresponding to the target shutdown method from the anti-tower collapse response condition, the target shutdown method includes at least one of the first shutdown method and the second shutdown method, the first shutdown method indicates the shutdown method by changing the blade retraction rate, and the second shutdown method indicates the shutdown method by increasing or maintaining the motor torque, and the first wind turbine is shut down based on the target of the shutdown control parameter. According to this embodiment, after a fault occurs in the first wind turbine that triggers the safety chain, the first wind turbine is controlled to shut down quickly by changing the blade retraction rate and / or increasing or maintaining the motor torque, thereby effectively avoiding the occurrence of a tower collapse accident.

[0059] As described above, after the first wind turbine generator set fails and triggers the safety chain, shutdown control is performed based on the anti-tower collapse response condition. In order to be able to perform shutdown control based on the anti-tower collapse response condition in a timely manner, the anti-tower collapse response condition can be set in advance.

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

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

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

[0063] As mentioned above, the first shutdown method indicates that the shutdown is performed by changing the blade retraction rate. Therefore, if the first wind turbine is shut down by the first shutdown method, it is necessary to ensure that the first wind turbine can adjust the blade retraction rate. The second shutdown method indicates that the shutdown is performed by increasing or maintaining the motor torque. Therefore, if the first wind turbine is shut down by the second shutdown method, it is necessary to ensure that the first wind turbine can meet the corresponding torque requirement. In view of this, the target configuration information may include information that can indicate whether the first wind turbine can adjust the blade retraction rate, and information that can indicate whether the first wind turbine meets the torque requirement.

[0064] As an example, a wind turbine uses a variable pitch system to control the retraction of the pitches, and an electric variable pitch system can adjust the retraction rate. Therefore, if an electric variable pitch system is used in the wind turbine, it means that the wind turbine can adjust the retraction rate. The motor torque in the wind turbine, also known as the motor torque, is usually controlled by the inverter. 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 variable pitch system, and the second information is used to indicate whether the inverter of the first wind turbine meets the torque increase requirement of the motor.

[0065] S220. Based on the target configuration information, determine at least one of the first shutdown mode and the second shutdown mode as a target shutdown mode.

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

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

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

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

[0070] As an example, the design load of the first wind turbine generator set may be a design limit load of the first wind turbine generator set.

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

[0072] The tower collapse prevention response condition includes a trigger condition for controlling the first wind turbine generator set using a target of a shutdown control parameter corresponding to a target shutdown mode and a control strategy corresponding to the trigger condition, wherein the control strategy includes a target of the shutdown control parameter.

[0073] In actual applications, the user can set at least one trigger condition as a tower collapse prevention response condition based on the target and actual needs of the shutdown control parameters.

[0074] As an example, the tower collapse prevention response condition may include one or more of the following trigger conditions:

[0075] The fault type corresponding to the triggered safety chain node is non-stuck propeller fault, the fault type corresponding to the triggered safety chain node is stuck propeller fault, the fault type corresponding to the triggered safety chain node is vibration switch trigger fault, etc. Among them, the stuck propeller fault refers to the fault caused by the stuck propeller condition, the non-stuck propeller fault refers to the fault caused by other conditions other than the stuck propeller condition, and the vibration switch trigger fault refers to the fault caused by the disconnection of the vibration switch due to excessive effective acceleration of the wind turbine.

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

[0077] As an example, for the trigger condition that the fault type corresponding to the triggered safety chain node is a non-stuck propeller fault or a vibration switch trigger, the corresponding control strategy may include directly controlling the first wind turbine to shut down based on the target of the shutdown control parameter. For the trigger condition that the fault type corresponding to the triggered safety chain node is a stuck propeller fault, the corresponding control strategy may include determining the original value of the retracting propeller rate based on the target value of the retracting propeller rate in the shutdown control parameter, and controlling the first wind turbine to shut down based on the original value of the retracting propeller rate. The reason for adopting this method is that the target value of the retracting propeller rate is usually the retracting propeller rate value after the boost, which is larger than the original value of the retracting propeller rate before the boost. If the retracting propeller rate target value is used for shutdown control under the stuck propeller condition, a large load problem may occur, causing the load of the first wind turbine to exceed the design load. Therefore, in order to avoid the problem of overload under the stuck propeller condition, the first wind turbine is shut down by using a dual-rate retracting propeller method to achieve precise control of the unit response and protect the unit safety.

[0078] Through the above method, the anti-tower collapse response condition that meets the first wind turbine generator set can be obtained according to the configuration of the first wind turbine generator set, thereby realizing the customized setting of the anti-tower collapse response condition.

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

[0080] In response to the first information indicating that the first wind turbine generator set adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine generator set does not meet the torque boost requirement of the motor, determining the first shutdown mode as the target shutdown mode;

[0081] In response to the first information indicating that the first wind turbine generator set does not use an electric pitch system, and the second information indicating that the converter of the first wind turbine generator set meets the torque boost requirement of the motor, determining the second shutdown mode as the target shutdown mode;

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

[0083] Among them, the first information indicates that the first wind turbine group adopts an electric variable pitch system, which means that the first wind turbine group can adjust the pitch retraction rate, and therefore supports the first shutdown method for shutdown control. On the contrary, if the first information indicates that the first wind turbine group does not adopt an electric variable pitch system, it means that the first wind turbine group cannot adjust the pitch retraction 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 group meets the torque increase requirement of the motor, it means that the first wind turbine group supports the second shutdown method for shutdown control, otherwise it does not support it. In this way, the shutdown method supported by the first wind turbine group can be set as the target shutdown method, thereby ensuring that the first wind turbine group can be controlled based on the target shutdown method.

[0084] In some embodiments, the target of the shutdown control parameter may be determined by means of unit load simulation. Specifically, determining the target of the shutdown control parameter corresponding to the target shutdown mode may include the following steps:

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

[0086] Based on the shutdown control parameters, the load simulation of the first wind turbine under the target working condition is performed to obtain multiple load simulation results corresponding to the shutdown control parameter values.

[0087] Determine targets for shutdown control parameters based on multiple load simulation results.

[0088] Wherein, obtaining the shutdown control parameters corresponding to the target shutdown mode can be understood as initializing the shutdown control parameters, so as to optimize the shutdown control parameters based on the initialized shutdown control parameters to obtain the target of the shutdown control parameters. Wherein, the shutdown control parameters can be initialized based on the original design parameters of the first wind turbine.

[0089] In this embodiment, the principle of the first shutdown method is mainly to shut down by increasing or maintaining the pitch retraction rate. Based on this, the pitch retraction rate value can be initialized to a preset multiple of the original value of the pitch retraction rate originally used by the first wind turbine group, and the preset multiple can be greater than or equal to 1. The principle of the second shutdown method is to shut down by increasing or maintaining the motor torque. Based on this, the torque lifting 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 working condition is performed based on the shutdown control parameters to obtain the load simulation results corresponding to the shutdown control parameters, and the target of the shutdown control parameters is determined based on the load simulation results.

[0091] In order to reduce the load in emergency abnormal conditions such as sudden blade damage without affecting the load of other operating conditions of the unit, the target operating conditions may include one or more of the following operating conditions: blade breakage condition, fault false triggering condition, and shutdown condition. Among them, the blade breakage condition refers to the condition where the blade breaks, the fault false triggering condition refers to the condition where the blade is safe but the sensor is falsely triggered, and the shutdown condition refers to a variety of conditions that require shutdown.

[0092] As an example, taking the target shutdown mode including the first shutdown mode and the second shutdown mode as an example, when the retracting rate value, the torque lifting multiple, the lifting torque change rate value, the unit off-grid speed value and the speed torque curve are used as the shutdown control parameters corresponding to the target shutdown mode, see Figure 3 , based on the shutdown control parameters, the unit load simulation under the target working condition is performed on the first wind turbine unit, and the load simulation results corresponding to the shutdown control parameters may include: under the blade breakage condition, the load simulation of the first wind turbine unit is performed based on the shutdown control parameters, under the fault false triggering condition, the load simulation of the first wind turbine unit is performed based on the shutdown control parameters, and under the shutdown condition, the load simulation of the first wind turbine unit is performed based on the shutdown control parameters, thereby obtaining three groups of load simulation results corresponding to the three load simulations.

[0093] Among them, when performing load simulation under the condition of blade fracture, the cross-section of the blade needs to be considered. The blade cross-sections corresponding to blade fractures caused by different reasons are 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 fractures caused by low blade safety factors, the "blade minimum safety factor cross-section" can be obtained for load simulation. For blade fractures caused by damage during blade transportation, the "blade transportation fulcrum cross-section" can be obtained for load simulation. For blade fractures caused by damage during on-site operation, the "blade maximum on-site cross-section" can be obtained for load simulation.

[0094] For load simulation under fault false triggering conditions and load simulation under shutdown conditions, the blades are usually in a normal state, so there is no need to obtain the blade cross section.

[0095] After obtaining three sets of load simulation results, one or more targets of parameters such as the unit's blade retraction rate, torque lifting multiple, lifting torque change rate, unit off-grid speed, and speed-torque curve are adjusted based on the three sets of load simulation results. By optimizing and adjusting the parameter targets, when the first wind turbine unit is shut down based on the shutdown control parameter targets, the unit load is below the design load to ensure the safety of the unit.

[0096] In some embodiments, the target of the shutdown control parameter may be optimized in an iterative manner. Specifically, determining the target of the shutdown control parameter based on the load simulation result may include:

[0097] In response to any load simulation result in the load simulation results being greater than the design load, adjusting a shutdown control parameter;

[0098] Returning the adjusted shutdown control parameter to the step of performing unit load simulation on the first wind turbine under the target working condition based on the shutdown control parameter until a first target is met, wherein the first target includes that multiple load simulation results corresponding to the adjusted shutdown control parameter are all less than or equal to the design load;

[0099] The shutdown control parameters that meet the first target are determined as the targets of the shutdown control parameters corresponding to the target shutdown mode.

[0100] Because in this embodiment, the first shutdown mode and the second shutdown mode are both for achieving rapid shutdown, and generally the greater the retraction rate and the greater the motor torque, the faster the shutdown. Therefore, when adjusting the shutdown control parameters, a gradual increase method can be used for adjustment, and the step size of each adjustment can be set according to actual conditions.

[0101] In the above manner, the shutdown control parameter target can be optimized quickly through iterative adjustment, thereby improving the efficiency of determining the shutdown control parameter target.

[0102] In some embodiments, when the target shutdown mode includes the first shutdown mode and the shutdown control parameters corresponding to the target shutdown mode include the blade retraction rate value, in order to ensure that the first wind turbine generator set can achieve the target of the shutdown control parameters, that is, to ensure that the shutdown control of the first wind turbine generator set based on the target of the shutdown control parameters is feasible, before determining the shutdown control parameters that meet the first target as the target of the shutdown control parameters corresponding to the target shutdown mode, the following steps may be performed first:

[0103] A pitch capability test is performed on the first wind turbine generator set based on the pitch retraction rate value to determine whether the pitch capability of the first wind turbine generator set can meet the pitch retraction rate value.

[0104] Among them, performing a pitch capability test on the first wind turbine set based on the pitch retraction rate value refers to performing a pitch capability test on the first wind turbine set based on the pitch retraction rate value in the shutdown control parameters that meet the first target, and the testing method may adopt an existing pitch capability testing method.

[0105] In this embodiment, the purpose of performing the pitch capability test is mainly to determine whether the electric pitch system in the first wind turbine can output the pitch retraction rate value obtained by iterative optimization. If it can be output, it is determined that the pitch capability of the first wind turbine can meet the pitch retraction rate value obtained by iterative optimization, otherwise it is determined that the pitch capability of the first wind turbine cannot meet the pitch retraction rate value obtained by iterative optimization.

[0106] Accordingly, the shutdown control parameter that satisfies the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode, including:

[0107] In response to the pitch capability of the first wind turbine generator set being able to meet the pitch retraction rate value, the shutdown control parameter that meets the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode.

[0108] When it is determined that the pitch capability of the first wind turbine group can meet the pitch retraction rate value obtained by iterative optimization, the shutdown control parameter obtained by iterative optimization is determined as the target of the shutdown control parameter. This can ensure that the first wind turbine group can achieve the target of the shutdown control parameter and avoid invalid control.

[0109] In the case where it is determined that the pitch capability of the first wind turbine generator set cannot meet the pitch retraction rate value obtained by iterative optimization, the shutdown control parameters can be re-optimized and adjusted, and iterative optimization can be performed until the pitch capability of the first wind turbine generator set can meet the pitch retraction rate value obtained by iterative optimization. In some embodiments, when the target shutdown mode includes a second shutdown mode, and the shutdown control parameters corresponding to the target shutdown mode include the corresponding relationship between the motor speed and the torque, that is, the speed-torque curve, in order to further ensure that the first wind turbine generator set can achieve the target of the shutdown control parameters, before determining the shutdown control parameters that meet the first target as the target of the shutdown control parameters corresponding to the target shutdown mode, the following steps can also be performed:

[0110] Based on the correspondence between the rotational speed and the torque, a converter speed-torque capability boundary test is performed on the first wind turbine generator set to determine whether the converter based on the first wind turbine generator set can achieve the correspondence between the motor speed and the torque.

[0111] Among them, performing a converter speed-torque capability boundary test on the first wind turbine set based on the correspondence between the speed and the torque refers to performing a converter speed-torque capability boundary test on the first wind turbine set based on the correspondence between the speed and the torque in the shutdown control parameters that meet the first target.

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

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

[0114] As an example, a speed torque curve table can be obtained through iterative optimization, and the speed torque curve table includes multiple speed torque curves, each speed torque curve corresponds to a set of motor speed and torque correspondence. Based on this, when setting the test file, each speed torque curve can be used as a torque given curve in the test file from the speed torque curve table in a low to high manner, thereby obtaining multiple versions of the test file, and different versions of the test file correspond to different torque given curves. Based on each test file, the speed torque capacity boundary test of the converter is performed to determine whether the converter's ability can envelop the speed torque curve table. In response to the converter's ability to envelop the speed torque curve table, it is determined that the converter of the first wind turbine group can achieve the corresponding relationship between the motor speed and torque, otherwise it is determined that the converter of the first wind turbine group cannot achieve the corresponding relationship between the motor speed and torque.

[0115] As an example, see Figure 4 , which is a schematic diagram of torque given curves corresponding to different versions of test files, wherein the four curves correspond to four versions of test files respectively. When it is determined through testing that the capability of the converter can envelop the four curves, it is determined that the converter of the first wind turbine group can achieve the corresponding relationship between the motor speed and the torque. Otherwise, it is determined that the converter of the first wind turbine group cannot achieve the corresponding relationship between the motor speed and the torque.

[0116] Accordingly, the shutdown control parameter that satisfies the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode, including:

[0117] In response to the fact that the converter based on the first wind turbine generator set can achieve the corresponding relationship between the motor speed and the torque, the shutdown control parameter value that meets the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode. When it is determined that the converter can achieve the corresponding relationship between the motor speed and the torque obtained by iterative optimization, the shutdown control parameter obtained by iterative optimization is determined as the target of the shutdown control parameter, which can further ensure that the first wind turbine generator set can achieve the target of the shutdown control parameter and avoid the situation of invalid control.

[0118] When it is determined that the converter cannot achieve the corresponding relationship between the motor speed and the torque obtained by iterative optimization, the shutdown control parameters can be readjusted and iteratively optimized until the converter of the first wind turbine can achieve the corresponding relationship between the motor speed and the torque. In some embodiments, before the shutdown control parameters that meet the first target are determined as the target of the 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, a current carrying capacity simulation is performed on the converter to determine whether the current carrying capacity of the converter can meet the current demand when the converter is shut down according to the shutdown control parameters.

[0120] The current carrying capacity of the converter refers to the maximum current that the converter can carry while operating safely.

[0121] In practical applications, an existing mature current carrying capacity simulation method may be used to simulate the current carrying capacity of the converter, which is not specifically limited in this embodiment.

[0122] In this embodiment, the purpose of simulating the current carrying capacity of the converter is mainly to determine whether the converter can carry the current flowing through it when the shutdown control is performed based on the shutdown control parameters that meet the first goal. If it is determined that it can carry the current, it is determined that the current carrying capacity of the converter can meet the current demand when the shutdown is performed according to the shutdown control parameters. If it is determined that it cannot carry the current, it is determined that the current carrying capacity of the converter cannot meet the current demand when the shutdown is performed according to the shutdown control parameters. When the current carrying capacity of the converter cannot meet the current demand when the shutdown is performed according to the shutdown control parameters, if the shutdown control is performed directly based on the shutdown control parameters, the converter may be burned out.

[0123] Accordingly, determining the shutdown control parameter that satisfies the first target as the target of the shutdown control parameter corresponding to the target shutdown mode may include:

[0124] When it is determined that the current carrying capacity of the converter can meet the current demand when shutting down according to the shutdown control parameters, the shutdown control parameters that meet the first goal are determined as the target of the shutdown control parameters corresponding to the target shutdown method. This can avoid burning out the converter when shutting down based on the target of the shutdown control parameters, thereby ensuring the safety of the converter.

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

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

[0127] Determine a second wind turbine generator set, the second wind turbine generator set has the same specifications as the first wind turbine generator set;

[0128] Performing a test on the tower collapse prevention response condition of the second wind turbine generator set based on the shutdown control parameter target to determine whether the operation of the second wind turbine generator set meets the first condition requirement;

[0129] Generate tower collapse prevention response conditions based on the targets of shutdown control parameters, including:

[0130] In response to the operating condition of the second wind turbine generator set satisfying the first condition requirement, an anti-tower collapse response condition is generated based on the target parameter.

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

[0132] Paddle retraction rate capability test, shutdown test based on the target of the shutdown control parameter, shutdown boundary test based on the target of the shutdown control parameter at different wind speeds, and wind turbine vibration test.

[0133] The first condition may be set according to a control effect to be achieved when the first wind turbine generator set is controlled based on a target of the shutdown control parameter.

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

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

[0136] Therefore, when it is determined that the second wind turbine meets the first condition requirement, the anti-tower collapse response condition is generated based on the target of the shutdown control parameter, which can ensure that the control of the first wind turbine based on the target of the shutdown control parameter can achieve the desired control effect.

[0137] In some embodiments, after the anti-tower collapse response condition is generated, the anti-tower collapse response condition may be deployed in the first wind turbine generator set, so that the first wind turbine generator set may be shut down controlled based on the anti-tower collapse response condition.

[0138] According to the above content, the tower collapse prevention response conditions may include different trigger conditions, and different trigger conditions correspond to different fault types and control strategies. Based on this, when the first wind turbine is shut down based on the target control of the shutdown control parameter, it may include:

[0139] Determine the fault type based on the triggered safety chain node;

[0140] Based on the fault type and the shutdown control parameter target, the first wind turbine generator set is controlled to shut down.

[0141] Usually, different nodes in the safety chain correspond to different fault types, and the correspondence between each node and the fault type is preset. Based on this, when the triggered safety chain node is determined, the corresponding fault type can be determined.

[0142] After the fault type is determined, the trigger condition corresponding to the fault type can be determined, and then the first wind turbine generator set can be controlled to shut down based on the control strategy corresponding to the trigger condition.

[0143] In this way, accurate control of the first wind turbine generator set can be achieved to protect the safety of the first wind turbine generator set.

[0144] In some embodiments, the target shutdown mode includes the first shutdown mode, and the target of the shutdown control parameter includes the target value of the retracting rate. Generally, the fault type can be divided into a stuck propeller fault and a non-stuck propeller fault, wherein the stuck propeller fault has a fault corresponding to the stuck propeller condition, and the non-stuck propeller fault is a fault caused by other conditions other than the stuck propeller condition. Based on this, when the first wind turbine is shut down based on the fault type and the target of the shutdown control parameter, it can include:

[0145] In response to the fault type being a non-stuck propeller fault, controlling the first wind turbine generator set to shut down based on a propeller retraction rate target value;

[0146] In response to the fault type being a propeller stuck fault, determining a propeller retraction rate original value based on a propeller retraction rate target value;

[0147] The first wind turbine generator set is controlled to shut down based on the original value of the pitch retraction rate, and the target value of the pitch retraction rate is greater than the original value of the pitch retraction rate.

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

[0149] In this embodiment, in the case of a stuck propeller fault, an original value of the propeller retraction rate that is lower than the target propeller retraction rate value is used for shutdown control, which can avoid the problem of the unit load exceeding the unit design load caused by using the target propeller retraction rate value for shutdown control, thereby protecting the safety of the unit. In non-stuck propeller conditions, a larger target propeller retraction rate value is used for shutdown control, which can achieve rapid propeller retraction and shutdown, thereby effectively avoiding the occurrence of tower collapse accidents.

[0150] In some embodiments, if the target shutdown mode includes the second shutdown mode, the target of the shutdown control parameter includes a plurality of sets of corresponding relationships between speeds and torques, and the plurality of sets of corresponding relationships between speeds and torques may be stored in the form of a speed torque curve table. Based on this, based on the fault type and the target of the shutdown control parameter, controlling the first wind turbine generator set to shut down may include:

[0151] A speed-torque curve corresponding to the fault type is searched in the speed-torque curve table, and the first wind turbine generator set is controlled to shut down based on the searched speed-torque curve.

[0152] Among them, different speed-torque curves correspond to different torque boost multiples, and the torque boost multiples corresponding to each fault type can be set according to actual needs. Based on this, when searching for the speed-torque curve corresponding to the fault type, the speed-torque curve corresponding to the torque boost multiple corresponding to the fault type can be searched.

[0153] The following takes the application of the wind turbine shutdown control method provided in the embodiment of the present application to a first wind turbine using an electric pitch system and a converter that meets the torque boost requirement of the motor as an example.

[0154] In the case where the target shutdown mode includes the first shutdown mode and the second shutdown mode, see Figure 5 The process of generating the tower collapse prevention response condition corresponding to the first wind turbine generator set may mainly include the following steps:

[0155] Generation and issuance of unit load simulation, variable flow strategy test, whole machine test and tower collapse prevention response conditions.

[0156] Among them, the unit load simulation and current conversion strategy test mainly correspond to the process of determining the target of the shutdown control parameters in the above embodiment, the whole machine test corresponds to the test of the second wind turbine unit after the target of the shutdown control parameters is determined, and the generation and issuance of the anti-tower collapse response conditions corresponds to the process of generating the anti-tower collapse response conditions based on the target of the shutdown control parameters. The implementation method of each process can be found in the relevant description in the above embodiment. To avoid repetition, it will not be repeated here.

[0157] See also Figure 6 , is a schematic diagram of shutdown control of the first wind turbine generator set based on the tower collapse prevention response condition, as shown in Figure 6 As shown, after the anti-tower collapse response condition is sent to the first wind turbine generator set, when it is determined that the whole machine safety chain is triggered, the first wind turbine generator set is shut down controlled based on the fault type using the target of the shutdown control parameter.

[0158] See also Figure 7 , which is a load comparison diagram of the shutdown control method provided in the embodiment of the present application and the load comparison diagram of the shutdown control method provided in the embodiment of the present application. It can be seen from the figure that the shutdown control method provided in the embodiment of the present application is used to perform shutdown control on the first wind turbine group. Compared with the traditional shutdown control method, load reduction shutdown can be achieved. After the first wind turbine group is seriously damaged, the safety of the tower of the first wind turbine group can be effectively protected, ensuring that the tower of the first wind turbine group does not collapse, which has a significant beneficial impact on the unit, personal and economic safety.

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

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

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

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

[0163] A second acquisition module 803 is used for acquiring a target of a shutdown control parameter corresponding to a target shutdown mode from a tower collapse prevention response condition in response to the presence of a triggered safety chain node, wherein the target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode, wherein the first shutdown mode indicates shutdown by increasing a propeller retraction rate, and the second shutdown mode indicates shutdown by increasing or maintaining a motor torque;

[0164] The control module 804 is used to control the first wind turbine generator set to shut down based on the target of the shutdown control parameter.

[0165] The wind turbine shutdown control device 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 in the safety chain based on the node status, and in response to the existence of the triggered safety chain node, obtains the target of the shutdown control parameter corresponding to the target shutdown method from the anti-tower collapse response condition, the target shutdown method includes at least one of the first shutdown method and the second shutdown method, the first shutdown method indicates the shutdown method by changing the blade retraction rate, and the second shutdown method indicates the shutdown method by increasing or maintaining the motor torque, and the first wind turbine is shut down based on the target of the shutdown control parameter. According to this embodiment, after a fault occurs in the first wind turbine that triggers the safety chain, the first wind turbine is controlled to shut down quickly by changing the blade retraction rate and / or increasing or maintaining the motor torque, thereby effectively avoiding the occurrence of a tower collapse accident.

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

[0167] The acquisition submodule is configured to obtain the node status of the safety chain in the first wind turbine generator set before obtaining the node status of the safety chain in the first wind turbine generator set.

[0168] Obtaining target configuration information of the first wind turbine generator set;

[0169] A target shutdown mode determination submodule, configured to determine at least one of the first shutdown mode and the second shutdown mode as a target shutdown mode based on the target configuration information;

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

[0171] The response condition generation submodule is used to generate the tower collapse prevention response condition based on the target of the shutdown control parameter.

[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 generator set adopts an electric pitch system, and the second information is used to indicate whether the converter of the first wind turbine generator set meets the torque increase requirement of the motor. The target shutdown mode determination submodule is specifically used to:

[0173] In response to the first information indicating that the first wind turbine generator set adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine generator set does not meet the torque boost requirement of the motor, determining the first shutdown mode as the target shutdown mode;

[0174] In response to the first information indicating that the first wind turbine generator set does not use an electric pitch system, and the second information indicating that the converter of the first wind turbine generator set meets the torque boost requirement of the motor, determining the second shutdown mode as the target shutdown mode;

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

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

[0177] An acquisition unit, used for acquiring a shutdown control parameter corresponding to a target shutdown mode;

[0178] The load simulation unit is used to simulate the load of the first wind turbine under the target working condition based on the shutdown control parameter to obtain the load simulation result corresponding to the shutdown control parameter.

[0179] The target operating conditions include one or more of the following operating conditions: blade fracture condition, fault false triggering condition, and shutdown condition;

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

[0181] In some embodiments, the target determination unit is specifically configured to:

[0182] In response to any load simulation result in the load simulation results being greater than the design load, adjusting a shutdown control parameter;

[0183] Returning the adjusted shutdown control parameter to the step of performing unit load simulation on the first wind turbine under the target working condition based on the shutdown control parameter, until a target is met that multiple load simulation results corresponding to the adjusted shutdown control parameter are all less than or equal to the design load;

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

[0185] In some embodiments, the parking control parameters of the first parking mode include a propeller retraction rate value. Before determining the parking control parameters that meet the target as the target of the parking control parameters corresponding to the target parking mode, the target determination unit is further used to:

[0186] Performing a pitch capability test on the first wind turbine generator set based on the pitch retraction rate value to determine whether the pitch capability of the first wind turbine generator set can meet the pitch retraction rate value;

[0187] Accordingly, the shutdown control parameters that meet the target are determined as the target of the shutdown control parameters corresponding to the target shutdown mode, including:

[0188] In response to the variable pitch capability of the first wind turbine generator set being able to meet the pitch retraction rate value, the target of the adjusted shutdown control parameter is determined as the target of the shutdown control parameter corresponding to the target shutdown mode.

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

[0190] Based on the correspondence between the speed and the torque, a converter speed and torque capability boundary test is performed on the first wind turbine generator set to determine whether the converter based on the first wind turbine generator set can achieve the correspondence between the motor speed and the torque;

[0191] Accordingly, the shutdown control parameters that meet the target are determined as the target of the shutdown control parameters corresponding to the target shutdown mode, including:

[0192] In response to the fact that the converter of the first wind turbine generator set can achieve a corresponding relationship between the motor speed and the torque, the adjusted shutdown control parameter value is determined as a target of the 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 test submodule is used to generate the tower collapse prevention response conditions based on the shutdown control parameter targets.

[0195] Determine a second wind turbine generator set, the second wind turbine generator set has the same specifications as the first wind turbine generator set;

[0196] Performing a test on the tower collapse prevention response condition of the second wind turbine generator set based on the shutdown control parameter target to determine whether the second wind turbine generator set meets the first condition requirement;

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

[0198] In response to the second wind turbine generator set satisfying the first condition requirement, an anti-tower collapse response condition is generated based on a target of the shutdown control parameter.

[0199] In some embodiments, the verification tests include one or more of the following tests:

[0200] Paddle retraction rate capability test, shutdown test based on shutdown control parameter targets, shutdown boundary test based on shutdown control parameter targets at different wind speeds, and wind turbine vibration test.

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

[0202] A fault type determination submodule is used to determine the fault type according to the triggered safety chain node;

[0203] The control submodule is used to control the first wind turbine generator set to shut down based on the fault type and the shutdown control parameter target.

[0204] In some embodiments, the target of the shutdown control parameter includes a target value of the propeller retraction rate, and the fault type is divided into a propeller stuck fault and a propeller stuck fault. The control submodule is specifically used for:

[0205] In response to the fault type being a non-stuck propeller fault, controlling the first wind turbine generator set to shut down based on a propeller retraction rate target value;

[0206] In response to the fault type being a propeller stuck fault, determining a propeller retraction rate original value based on a propeller retraction rate target value;

[0207] The first wind turbine generator set is controlled to shut down based on the original value of the pitch retraction rate, and the target value of the pitch retraction rate is greater than the original value of the pitch retraction rate.

[0208] The wind turbine shutdown control device provided in the embodiment of the present application can achieve Figures 1 to 7 To avoid repetition, the various processes implemented by the method embodiment are not described here.

[0209] Fig. 9 A schematic diagram of the hardware structure of an electronic device provided in an embodiment of the present 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), or an application specific integrated circuit (ASIC), or may be configured to implement one or more integrated circuits of the embodiments of the present application.

[0212] The memory 902 may include a large capacity memory for data or instructions. By way of example and not limitation, the memory 902 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a tape, or a universal serial bus (USB) drive, or a combination of two or more of these. Where appropriate, the memory 902 may include a removable or non-removable (or fixed) medium. Where appropriate, the memory 902 may be inside or outside the integrated gateway disaster recovery device. In a specific embodiment, the memory 902 is a non-volatile solid-state memory. The memory 902 may include a read-only memory (ROM), a random access memory (RAM), a disk storage medium device, an optical storage medium device, a flash memory device, an electrical, optical, or other physical / tangible memory storage device. Therefore, typically, the memory 902 includes one or more tangible (non-transitory) computer-readable storage media (e.g., a memory device) encoded with software including computer executable instructions, and when the software is executed (e.g., by one or more processors), it may perform the operations described in any one of the wind turbine shutdown control methods in the above-mentioned embodiments.

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

[0214] In one example, the electronic device may further include a communication interface 903 and a bus 910. Fig. 9 As shown, the processor 901, the memory 902, and the communication interface 903 are connected via a bus 910 and communicate with each other.

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

[0216] Bus 910 includes hardware, software or both, and the parts of online data flow billing equipment are coupled to each other. For example, but not limitation, bus may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front-end bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In appropriate cases, bus 910 may include one or more buses. Although the present application embodiment describes and shows a specific bus, the present application considers any suitable bus or interconnection.

[0217] In addition, in combination with the wind turbine shutdown control method in the above embodiment, the embodiment of the present application can provide a computer storage medium for implementation. The computer storage medium stores computer program instructions; when the computer program instructions are executed by the processor, any one of the wind turbine shutdown control methods in the above embodiment is implemented.

[0218] It should be clear that the present application is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present application.

[0219] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present application are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal 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, optical fiber media, radio frequency (RF) links, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0220] It should also be noted that the exemplary embodiments mentioned in this application describe some methods or systems based on a series of steps or devices. 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 embodiment, or in a different order from the embodiment, or several steps can be performed simultaneously.

[0221] Aspects of the present disclosure are described above with reference to the flowchart and / or block diagram of the method, device (system) and computer program product according to the embodiment of the present disclosure. It should be understood that each box in the flowchart and / or block diagram and the combination of each box in the flowchart and / or block diagram 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 device to produce a machine so that these instructions executed by the processor of the computer or other programmable data processing device enable the implementation of the function / action specified in one or more boxes of the flowchart and / or block diagram. 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 can also be understood that each box in the block diagram and / or flowchart and the combination of boxes in the block diagram and / or flowchart can also be implemented by dedicated hardware that performs a specified function or action, or can be implemented by a combination of dedicated hardware and computer instructions.

[0222] The above is only a specific implementation of the present application. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, modules and units described above can refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here. It should be understood that the protection scope of the present application is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in this application, and these modifications or replacements should be included in the protection scope of this application.

Claims

1. A wind turbine shutdown control method, characterized in that: include: Obtaining the node status of the safety chain in the first wind turbine generator set; Determining whether there is a triggered safety chain node in the safety chain based on the node state; In response to the presence of a triggered safety chain node, a target of a shutdown control parameter corresponding to a target shutdown mode is obtained from a tower collapse prevention response condition, wherein the target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode, wherein the first shutdown mode indicates shutdown by changing a propeller retraction rate, and the second shutdown mode indicates shutdown by increasing or maintaining a motor torque; The first wind turbine generator set is shut down based on the target control of the shutdown control parameter.

2. The method according to claim 1, characterized in that Before obtaining the node status of the safety chain in the first wind turbine generator set, the method further includes: Acquiring target configuration information of the first wind turbine generator set; Based on the target configuration information, determining at least one of the first shutdown mode and the second shutdown mode as the target shutdown mode; Determining a target of a shutdown control parameter corresponding to the target shutdown mode, wherein a unit load generated when the first wind turbine generator set is shut down based on the target of the shutdown control parameter is less than or equal to a design load of the first wind turbine generator set; The tower collapse prevention response condition is generated based on the target of the shutdown control parameter.

3. The method according to claim 2, characterized in that The target configuration information includes first information and second information, the first information is used to indicate whether the first wind turbine generator set adopts an electric pitch system, and the second information is used to indicate whether the converter of the first wind turbine generator set meets the torque boost requirement of the motor, and based on the target configuration information, determining at least one of the first shutdown mode and the second shutdown mode as the target shutdown mode includes: In response to the first information indicating that the first wind turbine generator set adopts an electric pitch system, and the second information indicating that the converter of the first wind turbine generator set does not meet the torque boost requirement of the motor, determining the first shutdown mode as a target shutdown mode; In response to the first information indicating that the first wind turbine generator set does not use an electric pitch system, and the second information indicating that the converter of the first wind turbine generator set meets the torque boost requirement of the motor, determining the second shutdown mode as a target shutdown mode; 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 boost requirement of the motor, at least one of the first shutdown mode and the second shutdown mode is determined as a target shutdown mode.

4. The method according to claim 3, characterized in that The objective of determining the shutdown control parameter corresponding to the target shutdown mode includes: Obtaining shutdown control parameters corresponding to the target shutdown mode; Based on the shutdown control parameter, a load simulation is performed on the first wind turbine generator set under a target operating condition to obtain a load simulation result corresponding to the shutdown control parameter; Wherein, the target operating condition includes one or more of the following operating conditions: blade fracture operating condition, fault false triggering operating condition, and shutdown operating condition; A target of the shutdown control parameter is determined based on the load simulation result.

5. The method according to claim 4, characterized in that The step of determining the target of the shutdown control parameter based on the load simulation result includes: In response to any load simulation result in the load simulation results being greater than the design load, adjusting the shutdown control parameter; Returning the adjusted shutdown control parameter to the step of performing unit load simulation on the first wind turbine under the target working condition based on the shutdown control parameter until a first target is met, wherein the first target includes that the load simulation results corresponding to the adjusted shutdown control parameter are all less than or equal to the design load; The shutdown control parameter that meets the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode.

6. The method according to claim 5, characterized in that The shutdown control parameter of the first shutdown mode includes a propeller retraction rate value. Before determining the shutdown control parameter that meets the first target as the target of the shutdown control parameter corresponding to the target shutdown mode, the method further includes: Performing a pitch capability test on the first wind turbine generator set based on the pitch retraction rate value to determine whether the pitch capability of the first wind turbine generator set can meet the pitch retraction rate value; The step of determining the shutdown control parameter that satisfies the first target as the target of the shutdown control parameter corresponding to the target shutdown mode includes: In response to the pitch capability of the first wind turbine generator set being able to meet the pitch retraction rate value, the shutdown control parameter that meets the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode.

7. The method according to claim 5, characterized in that The shutdown control parameters of the second shutdown mode include a correspondence between a motor speed and a torque. Before determining the shutdown control parameters that meet the first target as the target of the shutdown control parameters corresponding to the target shutdown mode, the method further includes: Based on the corresponding relationship between the rotational speed and the torque, a converter speed-torque capability boundary test is performed on the first wind turbine set to determine whether the converter based on the first wind turbine set can achieve the corresponding relationship between the motor speed and the torque; The step of determining the shutdown control parameter that satisfies the first target as the target of the shutdown control parameter corresponding to the target shutdown mode includes: In response to the fact that the converter of the first wind turbine generator set can achieve the corresponding relationship between the motor speed and the torque, the shutdown control parameter value that meets the first target is determined as the target of the shutdown control parameter corresponding to the target shutdown mode.

8. The method according to claim 4, characterized in that Before generating the tower collapse prevention response condition based on the target of the shutdown control parameter, the method further includes: Determine a second wind turbine generator set, wherein the second wind turbine generator set has the same specifications as the first wind turbine generator set; Performing a tower collapse prevention response condition inspection test on the second wind turbine generator set based on the target of the shutdown control parameter to determine whether the second wind turbine generator set meets the first condition requirement; The generating the tower collapse prevention response condition based on the target of the shutdown control parameter includes: In response to the second wind turbine generator set satisfying the first condition requirement, the tower collapse prevention response condition is generated based on the target of the shutdown control parameter.

9. The method according to claim 8, characterized in that The inspection tests include one or more of the following tests: Paddle retraction rate capability test, shutdown test based on the target of the shutdown control parameter, shutdown boundary test based on the target of the shutdown control parameter at different wind speeds, and wind turbine vibration test.

10. The method according to claim 1, characterized in that The target control of shutting down the first wind turbine generator set based on the shutdown control parameter includes: Determine the fault type according to the triggered safety chain node; Based on the fault type and the target of the shutdown control parameter, the first wind turbine generator set is controlled to shut down.

11. The method according to claim 10, characterized in that The target of the shutdown control parameter includes a target value of the pitch retraction rate, the fault type is divided into a stuck pitch fault and a non-stuck pitch fault, and the shutdown control of the first wind turbine generator set based on the fault type and the target of the shutdown control parameter includes: In response to the fault type being a non-stuck propeller fault, controlling the first wind turbine generator set to shut down based on the propeller retraction rate target value; In response to the fault type being a propeller stuck fault, determining a propeller retraction rate original value based on the propeller retraction rate target value; The first wind turbine generator set is controlled to shut down based on the original value of the pitch retraction rate, and the target value of the pitch retraction rate is greater than the original value of the pitch retraction rate.

12. A wind turbine shutdown control device, characterized in that: include: A first acquisition module, used to acquire the node status of the safety chain in the first wind turbine generator set; A trigger determination module, used to determine whether there is a triggered safety chain node in the safety chain based on the node state; A second acquisition module is used for acquiring a target of a shutdown control parameter corresponding to a target shutdown mode from a tower collapse prevention response condition in response to the presence of a triggered safety chain node, wherein the target shutdown mode includes at least one of a first shutdown mode and a second shutdown mode, wherein the first shutdown mode indicates shutdown by increasing a propeller retraction rate, and the second shutdown mode indicates shutdown by increasing or maintaining a motor torque; A control module is used to control the first wind turbine generator set to shut down based on the target of the shutdown control parameter.

13. An electronic device, characterized in that: The device comprises: a processor and a memory storing computer program instructions; When the processor executes the computer program instructions, the wind turbine shutdown control method according to any one of claims 1 to 11 is implemented.

14. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer program instructions, and when the computer program instructions are executed by a processor, the wind turbine shutdown control method according to any one of claims 1 to 11 is implemented.

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