Wind turbine generator system damage warning method and device, server and storage medium

Abstract

The application provides a wind turbine damage warning method and device, a server and a storage medium, and relates to the technical field of wind power generation. The server acquires key parameters sent by a wind turbine; the key parameters are key parameters of a target component of the wind turbine collected when the wind turbine is in an emergency collection mode; the server determines whether the wind turbine has a risk of being damaged according to the key parameters of the target component; and when the server determines that the wind turbine has a risk of being damaged, the server sends an alarm prompt to a terminal device to indicate that there is a risk of damage. The key parameters include at least one of the following: a vibration parameter, an inclination parameter and a load parameter. In this way, a large amount of time is saved, and the efficiency is high without the need for detection personnel to check whether each component of the wind turbine is damaged by a typhoon one by one, and the power generation function of the wind turbine does not need to be closed, thereby greatly reducing power generation loss.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of wind power generation technology, and particularly relates to a damage alarm method and device of a wind turbine generator system, a server and a storage medium. BACKGROUND

[0002] The wind turbine generator system is a power generation device that converts wind energy into mechanical work, and the mechanical work drives the rotor to rotate, and finally outputs alternating current. At present, the wind turbine generator system can be installed on the sea by piling to enable the wind turbine generator system to generate power at sea. Offshore wind power generation has unique advantages such as stable wind energy resources and no land occupation. However, the wind turbine generator system located on the sea is easily eroded by typhoons and damaged by typhoons.

[0003] At present, when the wind turbine generator system needs to continue to generate power after a typhoon, detection personnel need to go to the location of the wind turbine generator system to close the power generation function of the wind turbine generator system. Then, the detection personnel check whether each component of the wind turbine generator system is damaged by the typhoon one by one. In the above process, a large amount of time is spent and the efficiency is low. In addition, since the power generation function of the wind turbine generator system is closed during the inspection, a huge power generation loss will be caused. SUMMARY

[0004] The present application provides a damage alarm method and device of a wind turbine generator system, a server and a storage medium, which are used to solve the problem that detection personnel need to check whether each component of the wind turbine generator system is damaged by a typhoon one by one, and a large amount of time is spent and the efficiency is low in the prior art.

[0005] In a first aspect, the present application provides a damage alarm method of a wind turbine generator system, comprising: a server acquiring a key parameter sent by a wind turbine generator system; the key parameter is a key parameter of a target component of the wind turbine generator system collected when the wind turbine generator system is in an emergency collection mode; the server determines whether the wind turbine generator system has a risk of being damaged according to the key parameter of the target component; when the server determines that the wind turbine generator system has a risk of being damaged, the server sends an alarm prompt for indicating the risk of damage to a terminal device. The key parameter includes at least one of the following: a vibration parameter, an inclination parameter and a load parameter.

[0006] In a possible implementation, when the target component includes a blade of the wind turbine generator system, and the vibration parameter is a flap vibration amplitude, a pitch vibration amplitude, a coupled vibration amplitude and a natural frequency of the blade, the server determines whether the wind turbine generator system has a risk of being damaged according to the key parameter of the target component, comprising:

[0007] The server determines that the blade of the wind turbine generator system is at risk of being damaged when any one of the flapwise vibration amplitude, the edgewise vibration amplitude, the coupled vibration amplitude of the blade is greater than a set first amplitude threshold, or the decrease of the natural frequency of the blade exceeds a set frequency threshold.

[0008] When any one of the flapwise vibration amplitude, the edgewise vibration amplitude, the coupled vibration amplitude of the blade is greater than a set first amplitude threshold, or the decrease of the natural frequency of the blade exceeds a set frequency threshold, it indicates that the typhoon has caused damage to the blade of the wind turbine generator system when the wind turbine generator system is in the emergency acquisition mode, and thus the determination that the blade of the wind turbine generator system is at risk of being damaged is highly reliable.

[0009] In a possible implementation, when the target component includes the blade and / or the tower of the wind turbine generator system, and the load parameter is the load parameter of the root of the blade, and / or the load parameter of the middle of the blade, and / or the load parameter of the bottom of the tower, the server determines whether the wind turbine generator system is at risk of being damaged according to the key parameter of the target component: the server determines that the blade of the wind turbine generator system is at risk of being damaged when it is detected that the load parameter of the root of the blade is greater than a set first load parameter threshold.

[0010] When it is detected that the load parameter of the root of the blade is greater than a set first load parameter threshold, it indicates that the typhoon has caused damage to the blade of the wind turbine generator system when the wind turbine generator system is in the emergency acquisition mode, and thus the determination that the blade of the wind turbine generator system is at risk of being damaged is highly reliable.

[0011] In addition, the server determines that the blade of the wind turbine generator system is at risk of being damaged when it is detected that the load parameter of the middle of the blade is greater than a set second load parameter threshold; and / or, the server determines that the tower of the wind turbine generator system is at risk of being damaged when it is detected that the load parameter of the bottom of the tower is greater than a set third load parameter threshold.

[0012] When it is detected that the load parameter of the middle of the blade is greater than a set second load parameter threshold, it indicates that the typhoon has caused damage to the blade of the wind turbine generator system when the wind turbine generator system is in the emergency acquisition mode, and thus the determination that the blade of the wind turbine generator system is at risk of being damaged is highly reliable. Alternatively, when the load parameter of the bottom of the tower is greater than a set third load parameter threshold, it indicates that the typhoon has caused damage to the tower of the wind turbine generator system when the wind turbine generator system is in the emergency acquisition mode, and thus the determination that the tower of the wind turbine generator system is at risk of being damaged is highly reliable.

[0013] In a possible implementation, when the target component comprises a blade of a wind turbine generator set, the key parameters comprise load parameters of the blade, and the server determines whether the wind turbine generator set is at risk of being damaged according to the key parameters of the target component, comprising:

[0014] The server analyzes the load parameters of the blade of the wind turbine generator set according to the rain flow counting algorithm, and a change spectrum of the load parameters during the emergency acquisition mode;

[0015] The server determines, according to the change spectrum of the load parameters, a cycle number n i of each stress of K stresses to which the blade of the wind turbine generator set is subjected during the emergency acquisition mode i ;

[0016] The server determines, according to the cycle number n blade of each stress of K stresses to which the blade of the wind turbine generator set is subjected during the emergency acquisition mode, a cycle number N i of each stress of K stresses to which the blade of the wind turbine generator set is subjected during the emergency acquisition mode, and an algorithm

[0017]

[0018] determines a damage degree D i of the blade

[0019] The server determines that the blade of the wind turbine generator set is at risk of being damaged when the damage degree is greater than a first damage degree threshold.

[0020] It can be understood that the damage degree of the blade determined by the above algorithm is highly reliable, and thus the determination that the blade of the wind turbine generator set is at risk of being damaged when the damage degree is greater than the first damage degree threshold is also highly reliable.

[0021] In a possible implementation, when the target component comprises a nacelle of a wind turbine generator set, and the vibration parameters are a vibration amplitude and a natural frequency of the nacelle, the server determines whether the wind turbine generator set is at risk of being damaged according to the key parameters of the target component, comprising: the server determines that the nacelle of the wind turbine generator set is at risk of being damaged when the vibration amplitude of the nacelle is greater than a second amplitude threshold or a reduction of the natural frequency of the nacelle exceeds a frequency threshold.

[0022] When the vibration amplitude of the nacelle is greater than the second amplitude threshold or the reduction of the natural frequency of the nacelle exceeds the frequency threshold, it indicates that the nacelle of the wind turbine generator set is damaged by a typhoon when the wind turbine generator set is in the emergency acquisition mode, and thus the determination that the nacelle of the wind turbine generator set is at risk of being damaged is highly reliable.

[0023] In a possible implementation, when the target component includes the nacelle and / or the tower of the wind turbine generator, the server determines whether the wind turbine generator is at risk of being damaged according to the key parameter of the target component, including:

[0024] The server determines that the nacelle or the tower of the wind turbine generator is at risk of being damaged when the inclination parameter of the nacelle or the inclination parameter of the bottom of the tower is greater than the set inclination parameter threshold.

[0025] When the inclination parameter of the nacelle or the inclination parameter of the bottom of the tower is greater than the set inclination parameter threshold, it indicates that the nacelle of the wind turbine generator is damaged by the typhoon when the wind turbine generator is in the emergency acquisition mode. Therefore, the determination that the nacelle of the wind turbine generator is at risk of being damaged has high reliability.

[0026] In a possible implementation, when the target component includes the tower of the wind turbine generator, the key parameter includes the load parameter of the tower, and the server determines whether the wind turbine generator is at risk of being damaged according to the key parameter of the target component, including:

[0027] The server analyzes the load parameter change spectrum of the tower of the wind turbine generator during the emergency acquisition mode according to the rain flow counting algorithm.

[0028] The server determines, according to the load parameter change spectrum, the cycle number n i of each stress of K stresses to which the tower of the wind turbine generator is subjected during the emergency acquisition mode i .

[0029] The server determines, according to the cycle number n i of each stress of K stresses to which the tower is subjected during the emergency acquisition mode, the cycle number N i of each stress to which the tower is subjected during the emergency acquisition mode, and the formula

[0030]

[0031] to determine the damage degree D blade of the tower.

[0032] The server determines that the tower of the wind turbine generator is at risk of being damaged when the damage degree is greater than the set second damage degree threshold.

[0033] It can be understood that the damage degree of the blade determined by the above formula has high reliability, and therefore the determination that the blade of the wind turbine generator is at risk of being damaged when the damage degree is greater than the set second damage degree threshold also has high reliability.

[0034] In a possible implementation, the condition that the wind turbine set is in the emergency acquisition mode includes:

[0035] the main controller of the wind turbine set enters a typhoon mode;

[0036] or, the main controller of the wind turbine set determines that the network is disconnected;

[0037] or, the main controller of the wind turbine set determines that the power is disconnected;

[0038] or, the main controller of the wind turbine set determines that the wind speed is greater than a set threshold.

[0039] In a second aspect, the present application further provides a damage alarm device of a wind turbine set, including: a parameter acquisition unit, configured to acquire key parameters sent by the wind turbine set; the key parameters are key parameters of a target component of the wind turbine set when the wind turbine set is in an emergency acquisition mode; a risk determination unit, configured to determine whether the wind turbine set has a risk of being damaged according to the key parameters of the target component; and an alarm prompt unit, configured to send an alarm prompt for indicating the risk of damage to a terminal device when the wind turbine set has the risk of being damaged. The key parameters include at least one of the following: a vibration parameter, an inclination parameter and a load parameter.

[0040] In a third aspect, the present application further provides a server, including a memory, a processor and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the server executes the method provided in the first aspect of the present application.

[0041] In a fourth aspect, the present application further provides a computer readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer executes the method provided in the first aspect of the present application.

[0042] The present application provides a damage alarm method, device, server and storage medium of a wind turbine set, and the key parameters include at least one of the following: a vibration parameter, an inclination parameter and a load parameter. In this way, the server can determine whether the wind turbine set has a risk of being damaged according to the key parameters of the target component of the wind turbine set when the wind turbine set is in an emergency acquisition mode. When the server determines that the wind turbine set has the risk of being damaged, the server sends an alarm prompt for indicating the risk of damage to a terminal device. In this way, it is not necessary to check whether each component of the wind turbine set is damaged by a typhoon by detection personnel, a large amount of time is saved, the efficiency is high, and it is not necessary to close the power generation function of the wind turbine set, so that the power generation loss is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0043] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor under the enlightenment of the embodiments.

[0044] Figure 1 The structural schematic diagram of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0045] Figure 2 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0046] Figure 3 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0047] Figure 4 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0048] Figure 5 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0049] Figure 6 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0050] Figure 7 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0051] Figure 8 The flow chart of the damage alarm method of the wind turbine generator set provided by the embodiments of the present application is shown in the figure.

[0052] Figure 9 The functional module block diagram of the damage alarm device of the wind turbine generator set provided by the embodiments of the present application is shown in the figure. DETAILED DESCRIPTION

[0053] In order to make the purpose, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments made by those skilled in the art under the enlightenment of the embodiments of the present application, all belong to the scope of protection of the present application.

[0054] The terms "first", "second", "third", "fourth" and the like in the description and in the claims of the present application, and above-mentioned drawings, if any, are used to distinguish between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the use of the terms so-termed "first", "second", "third", "fourth" and the like, if any, in the description and the claims of the present application can be interchanged, where appropriate, to refer to a similar object in order to illustrate the embodiments of the present application described herein in other than the given order. Furthermore, the terms "comprising" and "including" and any of their derivatives, are intended to cover non-exclusive inclusions, for example, a process, method, system, product, or apparatus that comprises a list of steps or units is not necessarily limited to those steps or units that are clearly listed, but can include other steps or units that are not clearly listed or inherent to such processes, methods, products, or apparatuses.

[0055] Currently, when the wind turbine generator needs to continue to generate electricity after a typhoon, a detection personnel needs to go to the location where the wind turbine generator is located to close the power generation function of the wind turbine generator. Further, the detection personnel needs to check whether each component of the wind turbine generator is damaged by the typhoon. In the above process, a large amount of time is consumed and the efficiency is low. In addition, since the power generation function of the wind turbine generator is closed during the inspection, a huge power generation loss is caused.

[0056] Based on the above technical problem, the inventive concept of the present application is that the server can determine whether the wind turbine generator has a risk of being damaged according to the key parameters of the target component in the emergency acquisition mode sent by the wind turbine generator. When the server determines that the wind turbine generator has a risk of being damaged, the server sends an alarm prompt to the terminal device to indicate that there is a risk of damage.

[0057] In this way, the damage alarm method of the wind turbine generator provided by the present application does not require the detection personnel to check whether each component of the wind turbine generator is damaged by the typhoon, thereby saving a large amount of time and being efficient. In addition, the power generation function of the wind turbine generator does not need to be closed, thereby greatly reducing the power generation loss.

[0058] In the following, the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. In the following, the embodiments of the present application will be described with reference to the accompanying drawings.

[0059] The embodiments of the present application provide a damage alarm method of a wind turbine generator, applied to a server. The server is in communication connection with a plurality of wind turbine generators. For example, the server is in communication connection with a plurality of wind turbine generators through a network. Figure 1As shown, the wind turbine generator set includes blades 109, a nacelle 107, and a tower 108, wherein the blades 109 are connected to one side of the nacelle 107, the tower 108 is connected to the bottom of the nacelle 107, and the tower 108 is provided with a generator, when the blades 109 are subjected to wind force, the blades 109 rotate and drive the rotor of the generator to rotate to generate electricity, so as to convert wind energy into electrical energy. The wind turbine generator set is provided with a key parameter acquisition module, a control cabinet 106 and a wireless communication module, wherein the control cabinet 106 is in communication connection with the server through the wireless communication module, and the key parameter acquisition module, the control cabinet 106 and the wireless communication module are electrically connected in sequence. The control cabinet 106 is provided with a main controller.

[0060] Specifically, still as Figure 1 shown, the key parameter acquisition module includes a first vibration parameter acquisition module 101 arranged on the blade 109, a second vibration parameter acquisition module 102 arranged on the nacelle 107, an inclination angle parameter acquisition module 103 arranged on the tower 108, and a first load parameter acquisition module 104 arranged on the blade 109 and a second load parameter acquisition module 105 arranged on the tower 108. Among them, the first vibration parameter acquisition module 101 arranged on the blade 109 is used to acquire the vibration parameter of the blade 109; the second vibration parameter acquisition module 102 arranged on the nacelle 107 is used to acquire the vibration parameter of the nacelle 107, and the inclination angle parameter acquisition module 103 arranged on the tower 108 is used to acquire the inclination angle parameter of the tower 108. Among them, the sampling frequency of the above-mentioned vibration parameter, inclination angle parameter and load parameter is 50HZ.

[0061] Among them, the collection method of the vibration parameter can be: when the control cabinet 106 determines to be in the emergency collection mode, the control cabinet 106 starts the standby power supply and notifies the second load parameter acquisition module 105 arranged on the tower 108 to collect the load parameter of the tower 108 (wherein the load parameter can be the average value of the front side sub load parameter, the rear side sub load parameter, the left side sub load parameter and the right side sub load parameter of the tower 108), and the inclination angle parameter acquisition module 103 arranged on the tower 108 collects the inclination angle parameter (the inclination angle parameter can be the average value of the front side sub inclination angle parameter and the rear side sub inclination angle parameter of the tower 108, or the inclination angle parameter can also be the average value of the left side sub inclination angle parameter and the right side sub inclination angle parameter of the tower 108). In addition, the second load parameter acquisition module 105 or the inclination angle parameter acquisition module 103 notifies the second vibration parameter acquisition module 102 arranged on the nacelle 107 to collect the vibration parameter of the nacelle 107. Further, the second vibration parameter acquisition module 102 arranged on the nacelle 107 notifies the first vibration parameter acquisition module 101 arranged on the blade 109 to collect the vibration parameter of the blade 109, and notifies the first load parameter acquisition module 104 arranged on the blade 109 to collect the load parameter of the blade 109.

[0062] Figure 2 A damage warning method of a wind turbine generator set is provided in the embodiments of the present application. As shown in the accompanying drawings, Figure 2 The embodiments of the present application provide a damage warning method of a wind turbine generator set, which comprises:

[0063] S201: The server acquires the key parameters sent by the wind turbine generator set.

[0064] Specifically, the control cabinet 106 of the wind turbine generator set can send the key parameters to the wind turbine generator set through the wireless communication module, so that the server acquires the key parameters sent by the wind turbine generator set.

[0065] The key parameters can be the key parameters of the target components of the wind turbine generator set collected when the wind turbine generator set is in the emergency collection mode. For example, the key parameters can be, but are not limited to, the vibration parameters of the blades 109, the vibration parameters of the nacelle 107, and the inclination angle parameters of the tower 108.

[0066] It should be noted that the conditions under which the wind turbine generator set is in the emergency collection mode include:

[0067] The main controller of the wind turbine generator set enters the typhoon mode (such as the user remotely triggers the main controller to enter the typhoon mode);

[0068] Or, the main controller of the wind turbine generator set determines that the network is disconnected;

[0069] Or, the main controller of the wind turbine generator set determines that the power is disconnected (at this time, the wind turbine generator set is powered by an emergency power supply device);

[0070] Or, the main controller of the wind turbine generator set determines that the wind speed is greater than a set threshold value (such as the main controller determines that the wind speed sensor sends a value greater than 27 m / s).

[0071] It can be understood that when the main controller of the wind turbine generator set enters the typhoon mode, determines that the power is disconnected, determines that the network is disconnected, or determines that the wind speed is greater than a set threshold value (such as 27 m / s), it means that the wind turbine generator set may be damaged by the wind force of the typhoon, and at this time, the key parameters sent by the wind turbine generator set are acquired.

[0072] S202: The server determines whether the wind turbine generator set has a risk of being damaged according to the key parameters of the target components, and if so, performs S203.

[0073] S203: The server sends an alarm prompt to the terminal device for indicating the risk of damage.

[0074] In this way, the maintenance personnel can browse the alarm prompt indicating that the wind turbine generator system is at a risk of damage, and then the wind turbine generator system is overhauled.

[0075] To sum up, the method for alarming damage of a wind turbine generator system provided by the embodiments of the present application can determine whether the wind turbine generator system is at a risk of damage according to the key parameters of the target component in the emergency acquisition mode sent by the wind turbine generator system, and send an alarm prompt indicating that the wind turbine generator system is at a risk of damage to the terminal device when the server determines that the wind turbine generator system is at a risk of damage. In this way, the detection personnel do not need to check each component of the wind turbine generator system one by one to determine whether the component is damaged by the typhoon, which saves a lot of time and is efficient, and the power generation function of the wind turbine generator system does not need to be closed, which greatly reduces the power generation loss.

[0076] For example, the target component includes the blade 109 of the wind turbine generator system, and the vibration parameter is the flap vibration amplitude, the edgewise vibration amplitude, the coupled vibration amplitude, and the natural frequency of the blade 109. Figure 3 Another method for alarming damage of a wind turbine generator system is provided in the embodiments of the present application. As shown in Figure 3 The above-mentioned S202 can be specifically implemented as follows.

[0077] When any one of the flap vibration amplitude, the edgewise vibration amplitude, and the coupled vibration amplitude of the blade 109 is greater than a set first amplitude threshold, or the reduction of the natural frequency of the blade 109 exceeds a set frequency threshold, the server determines that the blade 109 of the wind turbine generator system is at a risk of damage.

[0078] When any one of the flap vibration amplitude, the edgewise vibration amplitude, and the coupled vibration amplitude of the blade 109 is greater than a set first amplitude threshold, or the reduction of the natural frequency of the blade 109 exceeds a set frequency threshold, it indicates that the blade 109 of the wind turbine generator system is damaged by the typhoon when the wind turbine generator system is in the emergency acquisition mode, so that the reliability of determining that the blade 109 of the wind turbine generator system is at a risk of damage is high.

[0079] For example, the target component includes the blade 109 and / or the tower 108 of the wind turbine generator system, and the load parameter is the load parameter of the root of the blade 109, and / or the load parameter of the middle of the blade 109, and / or the load parameter of the bottom of the tower 108. Figure 4 Another method for alarming damage of a wind turbine generator system is provided in the embodiments of the present application. As shown in Figure 4 The above-mentioned S202 can be specifically implemented as follows.

[0080] The server determines that the blade 109 of the wind turbine generator set is at risk of being damaged when detecting that the load parameter of the root of the blade 109 is greater than a set first load parameter threshold; or, the server determines that the blade 109 of the wind turbine generator set is at risk of being damaged when detecting that the load parameter of the middle of the blade 109 is greater than a set second load parameter threshold; or, the server determines that the tower 108 of the wind turbine generator set is at risk of being damaged when detecting that the load parameter of the bottom of the tower 108 is greater than a set third load parameter threshold.

[0081] When the load parameter of the root of the blade 109 is greater than the set first load parameter threshold, it indicates that the typhoon causes damage to the blade 109 of the wind turbine generator set when the wind turbine generator set is in the emergency acquisition mode, so that the determination of the risk of damage to the blade 109 of the wind turbine generator set has high reliability.

[0082] When the load parameter of the middle of the blade 109 is greater than the set second load parameter threshold, it indicates that the typhoon causes damage to the blade 109 of the wind turbine generator set when the wind turbine generator set is in the emergency acquisition mode, so that the determination of the risk of damage to the blade 109 of the wind turbine generator set has high reliability. Or, when the load parameter of the bottom of the tower 108 is greater than the set third load parameter threshold, the typhoon causes damage to the tower 108 of the wind turbine generator set when the wind turbine generator set is in the emergency acquisition mode, so that the determination of the risk of damage to the tower 108 of the wind turbine generator set has high reliability.

[0083] Further, when the target component includes the blade 109 of the wind turbine generator set, the key parameter includes the load parameter of the blade, such as Figure 5 As shown in FIG. 2, S202 can be specifically implemented as:

[0084] S501: The server analyzes the load parameter change spectrum of the blade 109 of the wind turbine generator set during the emergency acquisition mode according to the rain flow counting algorithm.

[0085] S502: The server determines the cycle number n of each of the K stresses received during the emergency acquisition mode according to the load parameter change spectrum i , the cycle number N of each stress that makes the blade 109 reach the fatigue limit i .

[0086] For example, when K=5, the K stresses include stress 1, stress 2, stress 3, stress 4 and stress 5, wherein stress 1 is greater than stress 2, greater than stress 3, greater than stress 4 and stress 5; wherein the cycle number of stress 1 is 50 times, the cycle number of stress 2 is 50 times, the cycle number of stress 3 is 60 times, the cycle number of stress 4 is 70 times, and the cycle number of stress 5 is 80 times.

[0087] the number of cycles 30 of stress 1 to reach the fatigue limit of the blade 109, the number of cycles 50 of stress 2 to reach the fatigue limit of the blade 109, the number of cycles 70 of stress 3 to reach the fatigue limit of the blade 109, and the number of cycles 90 of stress 4 to reach the fatigue limit of the blade 109.

[0088] S503: the server determines the number of cycles n of each of the K stresses to which the blade 109 is subjected during the emergency acquisition mode of the wind turbine generator i , the number of cycles N of each stress to reach the fatigue limit of the blade 109 i , and the formula to determine the damage degree D of the blade 109 blade .

[0089] S504: the server determines that the blade 109 of the wind turbine generator is at risk of being damaged when the damage degree is greater than a first damage degree threshold (e.g., 0.03 or 0.04).

[0090] It can be understood that the damage degree of the blade 109 determined by the above formula is highly reliable, and thus the reliability of determining that the blade 109 of the wind turbine generator is at risk of being damaged when the damage degree is greater than the first damage degree threshold is also high.

[0091] When the target component includes the nacelle 107 of the wind turbine generator and the vibration parameter is the vibration amplitude and the natural frequency of the nacelle 107, Figure 6 Another damage warning method of a wind turbine generator is provided in the embodiments of the present application. As shown in Figure 6 S202 can specifically include:

[0092] The server determines that the nacelle 107 of the wind turbine generator is at risk of being damaged when the vibration amplitude of the nacelle 107 is greater than a second amplitude threshold or the decrease of the natural frequency of the nacelle 107 exceeds a set frequency threshold.

[0093] When the vibration amplitude of the nacelle 107 is greater than the second amplitude threshold or the decrease of the natural frequency of the nacelle 107 exceeds the set frequency threshold, it indicates that the typhoon causes damage to the nacelle 107 of the wind turbine generator when the wind turbine generator is in the emergency acquisition mode, and thus the reliability of determining that the nacelle 107 of the wind turbine generator is at risk of being damaged is high.

[0094] Exemplarily, the target component can further include the nacelle 107 and / or the tower 108 of the wind turbine generator. Figure 7 Another damage warning method of a wind turbine generator is provided in the embodiments of the present application. As shown in Figure 7As shown, S202 may include:

[0095] When the tilt angle parameter of the nacelle 107 of the wind turbine generator set or the tilt angle parameter of the bottom of the tower 108 is greater than the set tilt angle parameter threshold (e.g., 0.01 degrees), the server determines that the nacelle 107 or the tower 108 of the wind turbine generator set is at risk of being damaged.

[0096] When the tilt angle parameter of the nacelle 107 of the wind turbine generator set or the tilt angle parameter at the bottom of the tower 108 is greater than the set tilt angle parameter threshold, it indicates that when the wind turbine generator set is in emergency data acquisition mode, the typhoon has caused damage to the nacelle 107 of the wind turbine generator set. Thus, it is determined that the nacelle 107 of the wind turbine generator set is at risk of being damaged, indicating high reliability.

[0097] For example, the target component includes the tower 108 of a wind turbine generator set, and the key parameters include the load parameters of the tower. Figure 8 Another method for damage alarm of wind turbine generator sets is provided as an embodiment of this application. For example... Figure 8 As shown, S202 may specifically include:

[0098] S801: The server analyzes the load parameter variation spectrum of the wind turbine tower 108 during emergency acquisition mode based on the rainflow counting statistical algorithm.

[0099] S802: Based on the load parameter variation spectrum, the server determines the number of cycles n for each of the K stresses experienced by the tower 108 during emergency acquisition mode. i The number of cycles N that cause the tower 108 to reach its fatigue limit under each stress. i .

[0100] The principles of S802 and S502 are the same, and will not be elaborated here.

[0101] S803: The server calculates the number of cycles n for each of the K stresses experienced by the wind turbine tower 108 during emergency data acquisition mode. i The number of cycles N that cause the tower 108 to reach its fatigue limit under each stress. i and formulas Determine the degree of damage D of tower 108 blade .

[0102] S804: When the damage level exceeds the set second damage level threshold, the server determines that the tower 108 of the wind turbine generator is at risk of being damaged.

[0103] It can be understood that the reliability of the damage degree of the blade 109 determined by the above formula is high, and thus the reliability of determining that the blade 109 of the wind turbine generator system is at risk of being damaged when the damage degree is greater than the second damage degree threshold is also high.

[0104] Referring to Figure 9 The embodiment of the application further provides a damage warning device 900 of a wind turbine generator system. It should be noted that the basic principle and technical effects of the damage warning device 900 of the wind turbine generator system provided by the embodiment of the application are the same as those of the above Figure 2 The corresponding embodiments are the same, and for brief description, the parts not mentioned in the embodiment of the application can refer to the corresponding contents in the above embodiments. The damage warning device 900 of the wind turbine generator system provided by the embodiment of the application comprises a parameter acquisition unit 901, a risk determination unit 902, and a warning prompt unit 903, wherein

[0105] The parameter acquisition unit 901 is configured to acquire the key parameters sent by the wind turbine generator system. The key parameters are the key parameters of the target component of the wind turbine generator system collected when the wind turbine generator system is in the emergency collection mode.

[0106] The risk determination unit 902 is configured to determine whether the wind turbine generator system is at risk of being damaged according to the key parameters of the target component.

[0107] The warning prompt unit 903 is configured to send a warning prompt indicating that there is a damage risk to a terminal device when the wind turbine generator system is at risk of being damaged. The key parameters include at least one of the following: a vibration parameter, an inclination parameter, and a load parameter.

[0108] In a possible implementation, when the target component comprises a blade of the wind turbine generator system, and the vibration parameter is a flap vibration amplitude, a pitch vibration amplitude, a coupled vibration amplitude, and a natural frequency of the blade, the risk determination unit 902 is specifically configured to determine that the blade of the wind turbine generator system is at risk of being damaged when any one of the flap vibration amplitude, the pitch vibration amplitude, and the coupled vibration amplitude of the blade is greater than a first amplitude threshold, or the reduction of the natural frequency of the blade exceeds a set frequency threshold.

[0109] In one possible implementation, when the target component includes the blades and / or tower 108 of a wind turbine generator, and the load parameters are the load parameters at the root of the blade, and / or the load parameters at the middle of the blade, and / or the load parameters at the bottom of the tower 108, the risk determination unit 902 is specifically used to determine whether there is a risk of damage to the wind turbine generator based on the key parameters of the target component: If the load parameter at the root of the blade is detected to be greater than a set first load parameter threshold, it is determined that the blade of the wind turbine generator is at risk of damage. Alternatively, if the load parameter at the middle of the blade is detected to be greater than a set second load parameter threshold, it is determined that the blade of the wind turbine generator is at risk of damage; or, if the load parameter at the bottom of the tower 108 is greater than a set third load parameter threshold, it is determined that the tower 108 of the wind turbine generator is at risk of damage.

[0110] In one possible implementation, when the target component includes wind turbine blades, the key parameters include the load parameters of the blades. Specifically, the risk determination unit 902 is used to analyze the load parameter variation spectrum of the wind turbine blades during emergency data acquisition mode based on a rainflow counting statistical algorithm; and based on the load parameter variation spectrum, determine the number of cycles n for each of the K stresses experienced by the blades during emergency data acquisition mode. i The number of cycles N required for each stress to bring the blade to its fatigue limit. i Based on the number of cycles n of each of the K stresses experienced by the blade during emergency data acquisition mode. i The number of cycles N required for each stress to bring the blade to its fatigue limit. i and formulas Determine the degree of leaf damage (D) blade When the degree of damage exceeds the set first damage threshold, it is determined that the blades of the wind turbine are at risk of being damaged.

[0111] In one possible implementation, the target component includes the nacelle of a wind turbine generator set, and the vibration parameters are the vibration amplitude and natural frequency of the nacelle. Specifically, the risk determination unit 902 is used to determine that the nacelle of the wind turbine generator set is at risk of being damaged when the vibration amplitude of the nacelle is greater than a set second amplitude threshold, or when the decrease in the natural frequency of the nacelle exceeds a set frequency threshold.

[0112] In one possible implementation, when the target component includes the nacelle and / or tower 108 of the wind turbine generator set, the risk determination unit 902 is specifically used to determine that the nacelle or tower 108 of the wind turbine generator set is at risk of being damaged when the tilt angle parameter of the nacelle of the wind turbine generator set or the tilt angle parameter of the bottom of the tower 108 is greater than a set tilt angle parameter threshold.

[0113] In a possible implementation, the target component includes a tower 108 of the wind turbine generator unit, and the key parameter includes a load parameter of the tower. The risk determination unit 902 is specifically configured to: analyze, according to a rain flow counting algorithm, a change spectrum of the load parameter of the tower 108 of the wind turbine generator unit during the emergency acquisition mode; and determine, according to the change spectrum of the load parameter, a cycle number n of each of K stresses to which the tower 108 of the wind turbine generator unit is subjected during the emergency acquisition mode i , a cycle number N of each of the stresses that causes the blade to reach a fatigue limit i ; determine, according to the cycle number n of each of the K stresses to which the tower 108 of the wind turbine generator unit is subjected during the emergency acquisition mode i , the cycle number N of each of the stresses that causes the tower 108 to reach a fatigue limit i , and an algorithm to determine a damage degree D of the tower 108 blade ; and determine that the tower 108 of the wind turbine generator unit is at risk of being damaged when the damage degree is greater than a second damage degree threshold.

[0114] In a possible implementation, the condition under which the wind turbine generator unit is in the emergency acquisition mode includes:

[0115] the main controller of the wind turbine generator unit enters a typhoon mode;

[0116] or, the main controller of the wind turbine generator unit determines that the network is disconnected;

[0117] or, the main controller of the wind turbine generator unit determines that the power is disconnected;

[0118] or, the main controller of the wind turbine generator unit determines that the wind speed is greater than a set threshold.

[0119] The embodiment of the present application further provides a server, including a memory, a processor, and a computer program stored in the memory and executable on the processor, when the processor executes the computer program, the server executes the method provided in the embodiment of the present application.

[0120] The embodiment of the present application further provides a computer readable storage medium, the computer readable storage medium stores a computer program, when the computer program is executed by a processor, the computer executes the method provided in the embodiment of the present application.

[0121] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for alarming damage to a wind turbine generator set, characterized in that, The method includes: The server acquires key parameters sent by the wind turbine generator set; the key parameters are the key parameters of the target components of the wind turbine generator set collected when the wind turbine generator set is in emergency acquisition mode; the target components include: blades, nacelle and tower. The server determines whether the wind turbine generator set is at risk of being damaged based on the key parameters of the target component. When the server determines that the wind turbine generator set is at risk of being damaged, it sends an alarm notification to the terminal device to indicate the risk of damage. The key parameters include: vibration parameters, tilt angle parameters, and load parameters; the vibration parameters include the vibration parameters of the blades and / or the vibration parameters of the nacelle; the tilt angle parameters include the tilt angle parameters of the bottom of the tower; and the load parameters include the load parameters of the blades and / or the load parameters of the bottom of the tower. The wind turbine generator set is equipped with a key parameter acquisition module and a control cabinet. When the control cabinet determines that it is in emergency acquisition mode, the control cabinet is used to start the backup power supply and notify the second load parameter acquisition module installed on the tower to acquire the load parameters of the tower, and to notify the tilt angle parameter acquisition module installed on the tower to acquire the tilt angle parameters. The second load parameter acquisition module or the tilt angle parameter acquisition module of the tower is used to notify the second vibration parameter acquisition module installed on the nacelle to acquire the vibration parameters of the nacelle. The second vibration parameter acquisition module is used to notify the first vibration parameter acquisition module installed on the blade to acquire the vibration parameters of the blade, and to notify the first load parameter acquisition module installed on the blade to acquire the load parameters of the blade.

2. The method according to claim 1, characterized in that, When the vibration parameters include the amplitude of blade flapping vibration, the amplitude of swaying vibration, the amplitude of coupled vibration, and the natural frequency, the server determines whether the wind turbine generator set is at risk of damage based on the key parameters of the target component, including: The server determines that the blades of the wind turbine are at risk of being damaged when any one of the flapping vibration amplitude, swaying vibration amplitude, or coupled vibration amplitude of the blade exceeds a set first amplitude threshold, or when the reduction in the natural frequency of the blade exceeds a set frequency threshold.

3. The method according to claim 1, characterized in that, When the load parameters include the load parameters of the blades and the load parameters at the bottom of the tower, and the load parameters of the blades include the load parameters at the root of the blades and / or the load parameters at the middle of the blades, the server determines whether the wind turbine generator set is at risk of damage based on the key parameters of the target component, including: When the server detects that the load parameter at the root of the blade is greater than a set first load parameter threshold, it determines that the blade of the wind turbine is at risk of being damaged. And / or, when the server detects that the load parameter at the center of the blade is greater than a set second load parameter threshold, it determines that the blade of the wind turbine is at risk of being damaged. And / or, when the load parameter at the bottom of the tower exceeds a set third load parameter threshold, the server determines that the tower of the wind turbine is at risk of being damaged.

4. The method according to claim 1, characterized in that, The server determines whether the wind turbine generator set is at risk of damage based on the key parameters, including the load parameters of the blades, based on these key parameters of the target component. The server analyzes the load parameter variation spectrum of the wind turbine blades during emergency data acquisition mode based on a rainflow counting statistical algorithm. The server determines, based on the load parameter variation spectrum, the number of cycles n for each of the K stresses experienced by the wind turbine blades during emergency data acquisition mode. i The number of cycles N that cause the blade to reach its fatigue limit under each stress. i ; The server calculates the number of cycles n for each of the K stresses experienced by the blade during emergency data acquisition mode. i The number of cycles N that cause the blade to reach its fatigue limit under each stress. i And the formula: Determine the degree of damage D of the blade. blade , When the degree of damage exceeds a set first damage threshold, the server determines that the blades of the wind turbine are at risk of being damaged.

5. The method according to claim 1 or 2, characterized in that, When the target component also includes the nacelle of the wind turbine generator set, and the vibration parameters are the vibration amplitude and natural frequency of the nacelle, the server determines whether the wind turbine generator set is at risk of damage based on the key parameters of the target component, including: The server determines that the nacelle of the wind turbine is at risk of being damaged when the vibration amplitude of the nacelle is greater than a set second amplitude threshold, or when the natural frequency of the nacelle decreases beyond a set frequency threshold.

6. The method according to claim 1, characterized in that, When the tilt parameters include the tilt angle of the nacelle or the tilt angle of the bottom of the tower, the server determines whether the wind turbine is at risk of damage based on the key parameters of the target component, including: When the tilt angle parameter of the nacelle or the tilt angle parameter at the bottom of the tower of the wind turbine generator exceeds a set tilt angle parameter threshold, the server determines that the nacelle or tower of the wind turbine generator is at risk of being damaged.

7. The method according to claim 1, characterized in that, When the key parameters include the load parameters of the tower, the server determines whether the wind turbine generator set is at risk of damage based on the key parameters of the target component, including: The server analyzes the load parameter variation spectrum of the wind turbine tower during emergency data acquisition mode based on the rainflow counting statistical algorithm. The server, based on the load parameter variation spectrum during emergency acquisition mode, measures the number of cycles n for each of the K stresses experienced by the wind turbine tower. i The number of cycles N that cause the tower to reach its fatigue limit under each stress. i ; During the emergency data acquisition mode, the tower is subjected to K stresses, with each stress experiencing a cycle number n. i The number of cycles N that cause the tower to reach its fatigue limit under each stress. i And the formula: Determine the degree of damage D of the tower. blade ; When the degree of damage exceeds a set second damage threshold, the server determines that the tower of the wind turbine is at risk of being damaged.

8. The method according to claim 1, characterized in that, The conditions under which the wind turbine generator set is in emergency data acquisition mode include: The main controller of the wind turbine generator set enters typhoon mode; Alternatively, the main controller of the wind turbine generator set determines that the network is disconnected; Alternatively, the main controller of the wind turbine determines that the power is off; Alternatively, the main controller of the wind turbine generator set determines that the wind speed is greater than a set threshold.

9. A damage alarm device for a wind turbine generator set, characterized in that, The device includes: A parameter acquisition unit is used to acquire key parameters sent by the wind turbine generator set. These key parameters are the key parameters of the target components of the wind turbine generator set collected when the wind turbine generator set is in emergency acquisition mode. The target components include: blades, nacelle, and tower. The wind turbine generator set is equipped with a key parameter acquisition module and a control cabinet. When the control cabinet determines that it is in emergency acquisition mode, the control cabinet is used to activate the backup power supply and notify the second load parameter acquisition module located on the tower to collect the load parameters of the tower, and to notify the tilt angle parameter acquisition module located on the tower to collect the tilt angle parameters. The second load parameter acquisition module or the tilt angle parameter acquisition module of the tower is used to notify the second vibration parameter acquisition module located on the nacelle to collect the vibration parameters of the nacelle. The second vibration parameter acquisition module is used to notify the first vibration parameter acquisition module located on the blades to collect the vibration parameters of the blades, and to notify the first load parameter acquisition module located on the blades to collect the load parameters of the blades. The risk determination unit is used to determine whether there is a risk of damage to the wind turbine generator set based on the key parameters of the target component. The alarm notification unit is used to send an alarm notification to the terminal device to indicate the risk of damage when it is determined that the wind turbine generator set is at risk of being damaged. The key parameters include: vibration parameters, tilt angle parameters, and load parameters; the vibration parameters include the vibration parameters of the blades and / or the vibration parameters of the nacelle; the tilt angle parameters include the tilt angle parameters of the bottom of the tower; and the load parameters include the load parameters of the blades and / or the load parameters of the bottom of the tower.

10. A server comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it causes the server to perform the method as described in any one of claims 1 to 8.

11. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by a processor, it causes the computer to perform the method as described in any one of claims 1 to 8.

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