Fan blade sectional type deicing system and control method

Abstract

The invention provides a fan blade sectional type deicing system and a control method, and relates to the technical field of fan blade deicing. The system comprises a deicing controller and a plurality of deicing modules, the deicing controller is respectively connected with the plurality of deicing modules; the deicing controller is used for obtaining icing data of the fan blade and generating a deicing control signal based on the icing data, and the deicing control signal is used for adjusting opening, closing and control parameters of the deicing module; sending the deicing control signal to a deicing module; and the deicing module is used for receiving the deicing control signal sent by the deicing controller and deicing the fan blade based on the deicing control signal. The deicing device is used for improving the deicing effect of the fan blade, and the precise, energy-saving and high-adaptability deicing effect is achieved.

Description

Technical Field

[0001] The present application relates to the technical field of ice removal for wind turbine blades, and particularly to a segmented ice removal system and control method for wind turbine blades. Background Art

[0002] With the large-scale development of the global wind power industry towards high-latitude and high-altitude regions, the problem of ice accretion on wind turbine blades in low-temperature and high-humidity environments has become increasingly prominent. Ice accretion on the blades will significantly damage their aerodynamic characteristics, resulting in a decrease in power generation efficiency, load imbalance, and even causing the unit to shut down or structural damage. Therefore, how to achieve ice removal for wind turbine blades has become an urgent problem to be solved in the wind power industry.

[0003] Regarding the problem of ice accretion on wind turbine blades, the existing technology usually adopts the gas-heat ice removal technology, in which hot air is blown into the blade interior from the blade root through a heating device, and the hot air circulates inside the blade to achieve temperature increase and ice removal. However, this method has the problem of poor ice removal effect. Summary of the Invention

[0004] A segmented ice removal system and control method for wind turbine blades provided by an embodiment of the present application are used to solve the problem of poor ice removal effect in the existing method.

[0005] In a first aspect, an embodiment of the present application provides a segmented ice removal system for wind turbine blades, including: an ice removal controller and a plurality of ice removal modules; the ice removal controller is respectively connected to the plurality of ice removal modules;

[0006] The ice removal controller is configured to obtain ice accretion data of the wind turbine blade, and generate an ice removal control signal based on the ice accretion data, where the ice removal control signal is used to adjust the opening and closing and control parameters of the ice removal module; and send the ice removal control signal to the ice removal module;

[0007] The ice removal module is configured to receive the ice removal control signal sent by the ice removal controller, and perform ice removal on the wind turbine blade based on the ice removal control signal.

[0008] In a possible implementation manner, when the ice removal module includes a first ice removal module and a second ice removal module, the wind turbine blade includes a first part, a second part, and a third part; the first ice removal module includes a first heating component, a first heating pipeline, and a fixed baffle;

[0009] One end of the first heating component is fixed to the first part of the wind turbine blade and is communicatively connected to the ice removal controller, and the other end of the first heating component is connected to the input end of the first heating pipeline; the first heating component is configured to receive the ice removal control signal from the ice removal controller and output a first hot air flow;

[0010] The output end of the first heating pipe is nested with the fixed baffle and extends to the second part of the fan blade; the first heating pipe is used to convey the first hot air flow to the second part of the fan blade;

[0011] The fixed baffle is fixed between the first part and the second part of the fan blade and is used to isolate the first hot air and prevent the first hot air flow from diffusing to the first part of the fan blade;

[0012] The fixed baffle is connected to the second de-icing module.

[0013] In a possible implementation manner, the second de-icing module includes a second heating component, a second heating pipe and an adjustable baffle;

[0014] One end of the second heating component is fixed to the first part of the fan blade and is communicatively connected to the de-icing controller, and the other end of the second heating component is connected to the input end of the second heating pipe; the second heating component is used to receive the de-icing control signal of the de-icing controller and output the second hot air flow;

[0015] The input end of the second heating pipe is connected to the other end of the second heating component and is nested with the fixed baffle, and the output end of the second heating pipe is nested with the adjustable baffle and extends to the third part of the fan blade; the second heating pipe is used to convey the second hot air flow to the third part of the fan blade;

[0016] The adjustable baffle is fixed between the second part and the third part of the fan blade and is used to adjust the flow rate of the hot air flow flowing to the third part of the fan blade.

[0017] In a possible implementation manner, the de-icing controller is further used for:

[0018] When the first heating component of the first de-icing module fails, closing the adjustable baffle and de-icing the third part of the fan blade through the second de-icing module;

[0019] When the second heating component of the second de-icing module fails, fully opening the adjustable baffle and de-icing the second part and the third part of the fan blade through the first de-icing module.

[0020] In a possible implementation manner, when the de-icing controller generates a de-icing control signal based on the icing data, it is specifically used for:

[0021] Based on the icing data, determining the icing degree of the fan blade;

[0022] According to the icing degree, generating a corresponding de-icing control signal to adjust the opening and closing and control parameters of the de-icing module, wherein the icing degree includes mild, moderate and severe.

[0023] In a possible implementation, when the de-icing module includes a first de-icing module and a second de-icing module, the control parameters include the heating intensity and the opening degree of the adjustable baffle in the second de-icing module;

[0024] When the icing degree is mild, the corresponding de-icing control signal includes the opening signal of the second de-icing module, the heating intensity, and the closing signal of the adjustable baffle in the second de-icing module;

[0025] When the icing degree is moderate, the corresponding de-icing control signal includes the opening signals of the first de-icing module and the second de-icing module, the heating intensity, the opening signal of the adjustable baffle in the second de-icing module, and the opening degree, where the heating intensity of the second de-icing module is greater than the control signal of the heating intensity of the first de-icing module;

[0026] When the icing degree is severe, the corresponding de-icing control signal includes the opening signals of the first de-icing module and the second de-icing module, the heating intensity, the opening signal of the adjustable baffle in the second de-icing module, and the opening degree.

[0027] In a possible implementation, the de-icing controller is further configured to obtain the real-time temperature data of the fan blade and adjust the de-icing control signal based on the real-time temperature data.

[0028] In a possible implementation, when the de-icing controller adjusts the de-icing control signal based on the real-time temperature data, it is specifically configured to:

[0029] When the icing degree is mild and the real-time temperature data exceeds the preset temperature range, add the opening signal of the second de-icing module to the corresponding de-icing control signal;

[0030] When the icing degree is moderate or severe, adjust the opening degree of the adjustable baffle in the second de-icing module based on the real-time temperature data.

[0031] In a possible implementation, the de-icing controller is connected to the fan controller corresponding to the fan blade;

[0032] The de-icing controller is further configured to obtain the wind speed prediction data and adjust the de-icing control signal based on the wind speed prediction data, and the wind speed prediction data is determined based on the lidar wind measurement in the fan controller.

[0033] In a second aspect, an embodiment of the present application provides a fan blade segmented de-icing control method, which is applied to the fan blade segmented de-icing system in the first aspect and / or various possible implementations of the first aspect above. The method includes:

[0034] The de-icing controller obtains the icing data of the wind turbine blade, and generates a de-icing control signal based on the icing data. The de-icing control signal is used to adjust the opening and closing and control parameters of the de-icing module; the de-icing control signal is sent to the de-icing module.

[0035] The de-icing module receives the de-icing control signal sent by the de-icing controller, and de-ices the wind turbine blade based on the de-icing control signal.

[0036] A segmented de-icing system and control method for a wind turbine blade provided by an embodiment of the present application. The system includes a de-icing controller and a plurality of de-icing modules; the de-icing controller is respectively connected to the plurality of de-icing modules; the de-icing controller is configured to obtain the icing data of the wind turbine blade, and generate a de-icing control signal based on the icing data. The de-icing control signal is used to adjust the opening and closing and control parameters of the de-icing module; the de-icing control signal is sent to the de-icing module; the de-icing module is configured to receive the de-icing control signal sent by the de-icing controller, and de-ice the wind turbine blade based on the de-icing control signal. Through a plurality of independently controlled de-icing modules and the icing data obtained in real time, the system can generate a control signal based on the actual situation, dynamically adjust the opening and closing and parameters of each module, improve the response speed and de-icing effect of the system; at the same time, it can achieve precise de-icing of different areas of the wind turbine blade, reduce energy waste, and avoid full coverage treatment of the entire blade, realizing precise de-icing. Description of the Drawings

[0037] The drawings herein are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present application, and are used together with the specification to explain the principles of the present application.

[0038] Figure 1 It is a schematic structural diagram of a segmented de-icing system for a wind turbine blade provided by the present application;

[0039] Figure 2 It is a schematic structural diagram of the specific deployment of a de-icing module in a wind turbine blade provided by the present application;

[0040] Figure 3 It is a schematic flowchart of a segmented de-icing control method for a wind turbine blade provided by the present application;

[0041] Figure 4 It is a schematic flowchart of the specific process of a segmented de-icing control method for a wind turbine blade provided by the present application;

[0042] Figure 5 It is a schematic structural diagram of an electronic device provided by the present application.

[0043] Description of the Reference Numerals:

[0044] 1: First heating component; 2: Second heating component; 3: Adjustable baffle; 4: Fixed baffle; 5: First heating pipeline; 6: Second heating pipeline; 7: Tip opening of the fan blade.

[0045] Through the above-mentioned drawings, specific embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0046] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0047] It should be understood that the terms "comprising" and "having" in the description and claims of the present application and any variations thereof are intended to cover but not exclude inclusion. For example, a product or device comprising a series of components does not necessarily have to be limited to those components clearly listed, but may include other components not clearly listed or inherent to these products or devices.

[0048] The term "module" used in the present application refers to any known or later-developed hardware, software, firmware, artificial intelligence, fuzzy logic, or a combination of hardware or / and software codes that can perform functions related to the element.

[0049] When a wind turbine generator operates in winter, ice formation on the blades will damage the aerodynamic characteristics, reduce the power generation efficiency, and cause imbalance of the impeller load due to the unevenness of ice accretion, and may even lead to shutdown in severe cases. With the accelerated construction of high-latitude and high-altitude wind power bases, ice formation on the fan blades has become a core problem threatening the safe operation of the units.

[0050] To address the ice formation problem on the fan blades, the prior art usually adopts the air-heating de-icing technology that is easy to arrange and retrofit. Its working principle is to blow hot air from the blade root into the blade interior through a heating device, and use the circulating flow of hot air inside the blade to achieve temperature increase and de-icing. The temperature control mechanism relies on built-in sensors to start and stop the heating device through thresholds. Among them, the existing heating methods include: the electrothermal film application scheme, that is, by laying resistance wires or carbon fiber heating layers in the middle and front sections of the blade, and using the Joule effect of current to generate heat; the hot air circulation system, that is, delivering the waste heat of the generator nacelle or independently heated air to the internal cavity of the blade; and new technologies such as using microwave or infrared radiation heating.

[0051] However, although the existing methods have a simple structure, they have the following disadvantages:

[0052] ① Low heat conduction efficiency at the blade tip: Heat transfer is restricted by the blade length. The tip region becomes a weak de-icing area due to the long heat conduction path and large heat dissipation area, resulting in the lowest de-icing efficiency at the tip which is an aerodynamic sensitive area.

[0053] ② Problem of unstable thermal balance in the dynamic environment: The global temperature control strategy cannot adapt to dynamic working conditions such as sudden changes in wind speed. Local overheating or underheating phenomena not only cause energy waste but also easily lead to secondary icing or material thermal fatigue.

[0054] ③ Insufficient system reliability: The single heat source architecture has no redundant design. The failure of key components leads to the failure of the de-icing function, and the long maintenance response time in extreme environments results in increased downtime losses.

[0055] Based on the above analysis of the existing technology, due to reasons such as uneven heat field distribution, single control strategy, and lack of redundancy, the existing methods mainly have problems of poor de-icing effect and low energy efficiency.

[0056] To solve the above problems, the embodiments of the present application provide a segmented de-icing system and control method for a wind turbine blade. By introducing a de-icing controller as the center, it collects and analyzes the ice covering data of the blade in real time, generates precise de-icing control signals based on this data, and improves the response speed and de-icing effect of the system; these signals can independently adjust the opening and closing and control parameters of each de-icing module, thus breaking through the distance limitation of single heat source conduction, realizing selective de-icing of different sections of the blade, reducing energy waste, and avoiding full coverage treatment of the entire blade, improving the operation fineness; at the same time, the intelligent design of the de-icing controller enables the entire system to self-adapt to different weather and environmental conditions, improving the reliability and operating efficiency of the wind turbine under harsh weather conditions.

[0057] The following uses specific embodiments to elaborate in detail on the technical solutions of the present application and how the technical solutions of the present application solve the above technical problems. These several specific embodiments can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0058] Figure 1 Shown in the following is a schematic structural diagram of a segmented de-icing system for a wind turbine blade provided by the present application. Figure 1 As shown, the segmented de-icing system for a wind turbine blade includes: a de-icing controller and multiple de-icing modules; the de-icing controller is respectively connected to the multiple de-icing modules.

[0059] It should be noted that Figure 1The de-icing modules can include n ones, which are respectively communicatively connected to the de-icing controller, where n is a positive integer greater than or equal to 2. Exemplarily, the value of n can be 2. Then Figure 1 the de-icing module does not include the part connected by ellipsis after the de-icing module 2; the value of n can be 3. Then Figure 1 the de-icing modules include the de-icing module 1, the de-icing module 2, and the de-icing module 3.

[0060] Among them, the de-icing controller is used to obtain the icing data of the wind turbine blade, and generate a de-icing control signal based on the icing data. The de-icing control signal is used to adjust the opening and closing and control parameters of the de-icing module; send the de-icing control signal to the de-icing module; the de-icing module is used to receive the de-icing control signal sent by the de-icing controller, and de-ice the wind turbine blade based on the de-icing control signal.

[0061] It should be noted that the de-icing controller can be the center of the entire de-icing system, responsible for collecting the icing data of the wind turbine blade, analyzing the data, generating the de-icing control signal, and sending the signal to the de-icing module. The de-icing module can be a specific unit for performing the de-icing operation, distributed at different parts of the wind turbine blade, such as the root and middle of the wind turbine blade, and is used to receive the de-icing control signal and adjust its working state according to the signal, such as heating intensity / level, heating power, working time, etc.

[0062] The icing data can be data used to describe the ice formation degree on the surface of the wind turbine blade, and can be collected by pre-installing icing sensors on the wind turbine blade. Among them, the icing data can include the thickness, position, area, etc. of the ice.

[0063] In one example, after obtaining the icing data, the de-icing controller can generate specific de-icing control signals through built-in algorithms or preset rules. These signals contain specific operation instructions that the de-icing module needs to execute, such as starting, closing, adjusting the heating power, etc. The de-icing controller sends the generated de-icing control signals to each de-icing module through communication lines or wirelessly to ensure that the de-icing instructions can be accurately and timely conveyed to each de-icing module. After receiving the control signal, the de-icing module adjusts its working state according to the instructions of the signal and starts to perform the de-icing operation. For example, heat is generated through heating elements to melt or peel off the ice layer at the corresponding position of the wind turbine blade.

[0064] Exemplarily, the de-icing module includes de-icing module 1 and de-icing module 2. Among them, the hot air outlet of de-icing module 1 is located in the middle of the fan blade, and the hot air outlet of de-icing module 2 is located at the tip of the fan blade. When the de-icing controller obtains the icing data of the fan blade and analyzes that icing occurs at the tip, it generates a de-icing control instruction to turn on de-icing module 2, thereby achieving precise de-icing of the tip; when it analyzes that the icing degree at the tip is relatively large (such as exceeding a preset threshold), it generates a de-icing control instruction to turn on de-icing module 1 and de-icing module 2 to increase the de-icing effect at the tip and at the same time avoid icing in the middle part.

[0065] The segmented de-icing system for fan blades provided in the embodiments of the present application realizes precise temperature control of different segments of the blade through a plurality of distributed de-icing modules in combination with the dynamic feedback of icing data. Specifically, the de-icing controller generates differentiated de-icing control signals according to the real-time icing data, independently adjusts the opening and closing and power of each de-icing module, thereby breaking through the distance limitation of single heat source conduction and ensuring that key areas such as the blade tip obtain sufficient heat. This not only improves the response speed and de-icing effect of the system, but also can reduce energy consumption while improving the de-icing efficiency, ensuring the continuous operation of the fan in extreme environments.

[0066] Based on the above embodiments, referring to Figure 2 , when the de-icing module includes a first de-icing module and a second de-icing module, the fan blade includes a first part, a second part, and a third part; the first de-icing module includes a first heating component 1, a first heating pipe 5, and a fixed baffle 4; one end of the first heating component 1 is fixed to the first part of the fan blade and is communicatively connected to the de-icing controller, and the other end of the first heating component 1 is connected to the input end of the first heating pipe 5; the first heating component 1 is used to receive the de-icing control signal of the de-icing controller and output a first hot air flow; the output end of the first heating pipe 5 is nested with the fixed baffle 4 and extends to the second part of the fan blade; the first heating pipe 5 is used to transport the first hot air flow to the second part of the fan blade; the fixed baffle 4 is fixed between the first part and the second part of the fan blade and is used to isolate the first hot air and prevent the first hot air flow from diffusing to the first part of the fan blade; the fixed baffle 4 is connected to the second de-icing module.

[0067] In this embodiment, the first de-icing module is the module mainly responsible for de-icing a specific area of the blade (such as the second part). The second de-icing module is another de-icing module in the system, which works in cooperation with the first de-icing module and is mainly responsible for de-icing other areas of the blade (such as the third part). It is connected to the fixed baffle and may realize the de-icing function through different heating components and pipes.

[0068] A wind turbine blade generally consists of a root, a middle part, and a tip. Among them, the root can refer to a section used to describe the connection between the blade and the hub, the middle part can refer to a section in the middle of the blade, and the tip can refer to a section at the outermost end of the blade. The positions of these three parts of the blade can be divided according to the blade model, size, and de-icing requirements.

[0069] Based on this, the first part and the second part of the wind turbine blade can be determined according to the position of the fixed baffle in the blade. Further, in some examples, to better meet the de-icing requirements of the blade tip, the fixed baffle can be fixed between the root and the middle part; it can also be fixed at a target position in the middle part, and the selection of the target position can be adjusted according to the actual de-icing requirements. For example, when the de-icing requirement of the blade tip is low, the fixed baffle is fixed at a position in the middle part close to the root; when the de-icing requirement of the blade tip is high, the fixed baffle is fixed at the middle position or a position close to the tip in the middle part.

[0070] Thus, when the fixed baffle is fixed between the root and the middle part, the first part of the wind turbine blade includes the root, and the second part includes the middle part; when the fixed baffle is fixed at the target position in the middle part, the first part of the wind turbine blade includes the root and a section between the target position in the middle part and the root, and the second part includes a section between the target position in the middle part and the tip. In addition, the third part of the wind turbine blade can refer to the tip of the wind turbine blade.

[0071] Further, the first heating component 1 is a heating element in the first de-icing module, usually located in the first part of the blade, communicates directly with the de-icing controller, can receive the de-icing signal from the controller, and heats the cold air flow at the blade root to generate a first hot air flow. The first heating pipe 5 is a pipe connecting the first heating component 1 and the second part of the blade, and is used to transport the first hot air flow generated by the first heating component 1 to the second part of the blade to achieve heating and de-icing of a specific area. The fixed baffle 4 is a baffle installed between the first part and the second part of the blade, and is used to isolate the first hot air flow to prevent it from diffusing to the first part of the blade, ensuring that the heat can be concentrated in the areas that need de-icing, such as the second part and the third part.

[0072] Exemplarily, when ice forms on the second part of the blade or the ice formation degree on the third part of the blade increases, the de-icing controller sends a de-icing signal to the first heating component 1; after receiving the signal, the first heating component 1 starts to work, converts electrical energy into heat energy, thereby heating the cold air flow to generate a high-temperature hot air flow; the first heating pipe 5 transports the generated hot air flow to the second part of the blade, and melts or peels off the ice layer in the de-icing area through heat conduction and heat convection.

[0073] By introducing the second de-icing module, the first de-icing module and their specific components, effective de-icing of specific areas of the blade (such as the second part) is achieved. This segmented and targeted de-icing method not only improves the de-icing efficiency but also reduces energy waste. At the same time, the design of the fixed baffle ensures the effective utilization of heat and prevents heat from spreading to areas that do not require de-icing.

[0074] Based on the above embodiments, continue to refer to the above Figure 2 , the second de-icing module includes a second heating component 2, a second heating pipe 6 and an adjustable baffle 3; one end of the second heating component 2 is fixed to the first part of the fan blade and is communicatively connected to the de-icing controller, and the other end of the second heating component 2 is connected to the input end of the second heating pipe 6; the second heating component 2 is used to receive the de-icing control signal from the de-icing controller and output a second hot air flow; the input end of the second heating pipe 6 is connected to the other end of the second heating component 2 and is nested with the fixed baffle 4, and the output end of the second heating pipe 6 is nested with the adjustable baffle 3 and extends to the third part of the fan blade; the second heating pipe 6 is used to transport the second hot air flow to the third part of the fan blade; the adjustable baffle 3 is fixed between the second part and the third part of the fan blade and is used to adjust the flow rate of the hot air flow flowing to the third part of the fan blade.

[0075] Among them, the second de-icing module is responsible for heating the third part of the fan blade. The adjustable baffle can adjust the hot air flow rate flowing to the third part.

[0076] It can be understood that, compared with the first de-icing module, the second de-icing module is closer to the tip of the fan blade, which can reduce the heat loss generated during the transfer of the hot air flow during the de-icing process. Furthermore, it can solve the problem that in the traditional single heat source structure, due to the significant distance attenuation effect, during the process of heat transfer from the middle section of the blade to the tip, limited by aerodynamic heat dissipation and material heat conduction, the actual heat reaching the tip is insufficient, resulting in the temperature of the tip area being prone to form a persistent de-icing blind area. Among them, the length of the second heating pipe can be adjusted according to the position of the fixed baffle, so as to reduce heat loss and improve the de-icing effect. For example, when the fixed baffle is fixed at the target position in the middle, the second part of the fan blade is a section between the target position in the middle and the tip. Compared with when the fixed baffle is fixed between the root and the middle, the length of the second heating pipe will be further shortened, more effectively reducing the heat loss generated during the transfer of the hot air flow during the de-icing process.

[0077] Further, the second heating component 2 is a heating element in the second de-icing module, usually also located at the first part of the blade, communicates directly with the de-icing controller, can receive the de-icing signal from the controller, and heats the cold air flow at the blade root to generate a second hot air flow. The second heating duct 6 is a duct connecting the second heating component 2 and the third part of the blade, used to transport the second hot air flow generated by the second heating component 2 to the third part of the blade to achieve heating and de-icing of this area. In addition, compared with the first heating duct, it can have different lengths, diameters or layouts to adapt to the de-icing requirements of the third part. The adjustable baffle 3 is a baffle installed between the second part and the third part of the blade. Different from the fixed baffle, it can adjust the opening size as needed, thereby controlling the flow rate of the hot air flow flowing to the third part of the blade. This design enables the system to more flexibly respond to different icing conditions and environmental conditions.

[0078] Exemplarily, when icing occurs at the third part of the blade, the de-icing controller sends a de-icing signal to the second heating component 2; after receiving the signal, the second heating component 2 starts to work, converts electrical energy into heat energy, and generates another high-temperature hot air flow; the second heating duct 6 transports the generated hot air flow to the third part of the blade, and melts or peels off the ice layer in this area through heat conduction and heat convection.

[0079] In another example, when the icing phenomenon at the third part of the blade increases or icing is severe at both the second part and the third part, the first and second de-icing modules can be used together for heating and de-icing. At this time, only the opening degree of the adjustable baffle needs to be adjusted to control the flow rate of the hot air flow flowing to the third part. Among them, the de-icing controller can control the adjustable baffle to adjust its opening size according to factors such as the icing degree and environmental temperature of the second part and the third part of the blade, which helps to achieve a more accurate de-icing effect and energy utilization.

[0080] It should be noted that during the de-icing process, the hot air flow flowing to the second part and the third part of the fan blade can be discharged through the preset tip opening 7 of the fan blade after completing the de-icing task and circulated to the root of the fan blade. By recycling the hot air flow, heat waste is reduced, and the energy utilization efficiency is improved, enabling the de-icing system to achieve a more efficient and thorough de-icing effect with the same energy consumption; at the same time, the recycled hot air flow can continuously provide heat for the second part and the third part of the blade, accelerating the ice melting process, thereby shortening the de-icing time; in addition, through the circulation design, the heat distribution in the system is more uniform, avoiding local overheating or overcooling, and enhancing the stability and reliability of the system.

[0081] By introducing the specific components of the second de-icing module, the flow rate of the hot air flowing to the third part can be flexibly adjusted as needed, thereby improving the de-icing effect. This helps to adapt to different icing conditions and environmental conditions, reduce energy waste and improve the overall performance of the system. In addition, the reliability and stability of the de-icing system are enhanced, providing a strong guarantee for the safe operation of the wind turbine generator in harsh environments.

[0082] Based on the above embodiments, the de-icing controller is further configured to: when the first heating component of the first de-icing module fails, close the adjustable baffle, and de-ice the third part of the fan blade through the second de-icing module; when the second heating component of the second de-icing module fails, fully open the adjustable baffle, and de-ice the second and third parts of the fan blade through the first de-icing module.

[0083] In this embodiment, the de-icing controller monitors the working status of each de-icing module in real time. Once a failure (such as power failure, overheating, etc.) is detected, the corresponding failure handling mechanism is immediately activated.

[0084] Since the ice-prone position of the blade is usually the third part (i.e., the tip) of the blade, when the first heating component fails, closing the adjustable baffle can prevent the heat generated by the second de-icing module from spreading from the tip to other areas, ensuring that the ice layer in the tip area is effectively removed. When the second heating component fails, fully opening the adjustable baffle can ensure that more heat generated by the first de-icing module flows from the second part (corresponding to the middle part) to the tip, ensuring that the ice layer in the tip area can also be effectively removed.

[0085] It should be noted that the failure handling mechanism is illustrated by taking the number of de-icing modules as 2. When the number of de-icing modules is more than 2, even when a single module fails, the de-icing efficiency can be ensured by combining other modules according to the failure handling mechanism. The failure handling mechanism can be a variety of emergency handling strategies preset in the system, and there are corresponding handling schemes for different failure types and failure degrees.

[0086] By adding the failure handling mechanism, the reliability and flexibility of the system are enhanced, ensuring that even when a single de-icing module fails, the comprehensive de-icing of the blade can be achieved through the cooperation of other modules and the adjustable baffle. This not only avoids the de-icing blind area caused by the failure, but also optimizes the heat distribution through flexible baffle adjustment, improving the de-icing efficiency and energy utilization efficiency.

[0087] Based on the above embodiments, when generating the de-icing control signal based on the icing data, the de-icing controller is specifically configured to: determine the icing degree of the fan blade based on the icing data; generate the corresponding de-icing control signal according to the icing degree to adjust the opening and closing and control parameters of the de-icing module, where the icing degree includes mild, moderate and severe.

[0088] Among them, the icing degree can be the severity of icing on the fan blade evaluated according to icing data, and can be divided into three levels: mild, moderate and severe, which is used to guide the generation of de-icing control signals.

[0089] In one example, the division range corresponding to the icing degree is preset according to the thickness, area, position and icing speed of the ice layer by the icing sensor. For example, when the icing degree is mild, the icing data satisfies at least one of the following conditions: ① the ice layer thickness is less than or equal to 1 mm, ② the proportion of the icing area in the total blade area is less than or equal to 10%, ③ the icing speed is slow, and the increase in the ice layer thickness per unit time is small; when the icing degree is moderate, the icing data satisfies at least one of the following conditions: ① the ice layer thickness is between 1 mm and 5 mm, ② the proportion of the icing area in the total blade area is between 10% and 30%, ③ the icing speed is moderate, and the increase in the ice layer thickness per unit time is moderate; when the icing degree is severe, the icing data satisfies at least one of the following conditions: ① the ice layer thickness is greater than 5 mm, ② the proportion of the icing area in the total blade area is greater than 30%, ③ the icing speed is fast, and the increase in the ice layer thickness per unit time is large. In addition, when there is a conflict in the determination of the icing degree, it is preferentially determined as a higher degree. For example, for the ice layer thickness: 3 mm, and the icing area: 10% of the total blade area, the icing degree is determined as moderate.

[0090] By introducing a fine division of the icing degree of the fan blade and generating corresponding de-icing control signals based on the icing degree, the controller can generate the most suitable de-icing control signal, ensure that the de-icing module works in an optimal state, and achieve a fast and thorough de-icing effect; adjusting the working parameters of the de-icing module according to the icing degree avoids overheating or insufficient heating, thereby improving the energy utilization efficiency and reducing the operating cost.

[0091] On the basis of the above embodiments, when the de-icing module includes a first de-icing module and a second de-icing module, the control parameters include the heating intensity and the baffle opening degree of the adjustable baffle in the second de-icing module; when the icing degree is mild, the corresponding de-icing control signal includes the opening signal of the second de-icing module, the heating intensity, and the closing signal of the adjustable baffle in the second de-icing module; when the icing degree is moderate, the corresponding de-icing control signal includes the opening signals of the first de-icing module and the second de-icing module, the heating intensity, and the opening signal and baffle opening degree of the adjustable baffle in the second de-icing module, where the heating intensity of the second de-icing module is greater than the control signal of the heating intensity of the first de-icing module; when the icing degree is severe, the corresponding de-icing control signal includes the opening signals of the first de-icing module and the second de-icing module, the heating intensity, and the opening signal and baffle opening degree of the adjustable baffle in the second de-icing module.

[0092] In this embodiment, the heating intensity may refer to the amount of heat generated by the heating component in the de-icing module or the level of heating power, which directly affects the de-icing speed and efficiency. The heating intensity can be flexibly adjusted according to the degree of icing to achieve the optimal de-icing effect.

[0093] In some embodiments, the heating component includes: an air inlet, a heating element, a fan or blower, and a control unit. Among them, the air inlet is used to inhale the cold air in the blade root as the raw material for heating. The heating element is arranged inside the component and can be composed of multiple heating wires. These heating wires generate heat after being powered on to heat the inhaled cold air. Optionally, the heating element adjusts the heating intensity by adjusting the magnitude of the current or the number of working heating wires, thereby achieving precise control of the temperature of the output hot air flow. The fan or blower is similar to the working principle of a hair dryer and is used to blow the heated hot air flow to the designated part of the fan blade through a heating pipeline. Optionally, the rotation speed and power of the fan or blower can also be adjusted according to the heating intensity requirements to further control the flow rate and speed of the hot air flow. The control unit is connected to the heating element and the fan or blower and is used to receive the control signal from the de-icing controller and adjust the working state of the heating element and the rotation speed of the fan or blower according to the signal instruction, thereby achieving the control or adjustment of the heating intensity during the de-icing process.

[0094] The baffle opening of the adjustable baffle can refer to the degree of opening or the size of the opening of the adjustable baffle in the second de-icing module. By adjusting the baffle opening, the flow rate and speed of the hot air flow flowing to the third part (i.e., the tip) of the fan blade can be controlled, thereby optimizing the de-icing process.

[0095] Among them, when the degree of icing is mild, the hot air flow mainly blows to the third part of the blade, causing the third part of the blade to heat up to prevent icing at the leaf tip. When the degree of icing is moderate, the heating of the second de-icing module is the main, and the heating of the first de-icing module is the auxiliary. The baffle opening is adjusted based on the actual de-icing control signal and is usually in a partially open state to balance the de-icing effects of the second and third parts of the blade and maintain the blade temperature. When the degree of icing is severe, the opening signals of the first de-icing module and the second de-icing module are also generated, and a higher heating intensity (compared to moderate icing) is set. The opening signal and a larger baffle opening of the adjustable baffle in the second de-icing module are generated to ensure that sufficient heat flows to the third part of the blade and accelerate the de-icing process.

[0096] By precisely controlling the heating intensity of the de-icing module and the baffle opening of the adjustable baffle, an accurate response to different degrees of icing is achieved. At the same time, the situations of overheating or insufficient heating are avoided, improving the de-icing effect and energy utilization efficiency. In addition, precise de-icing control can also reduce the risk of system failures caused by icing and extend the service life of the wind turbine generator set.

[0097] Based on the above embodiments, the de-icing controller is further configured to obtain the real-time temperature data of the fan blade and adjust the de-icing control signal based on the real-time temperature data.

[0098] In this embodiment, the real-time temperature data may refer to the temperature information of the fan blade at the current moment, which can be obtained by temperature sensors installed on or near the blade. The real-time temperature data reflects the thermal state of the blade and is crucial for de-icing control.

[0099] In some embodiments, the de-icing controller continuously monitors the real-time temperature data from the temperature sensors to ensure timely detection of changes in the blade temperature. The controller processes the acquired temperature data, analyzes the thermal state of the blade, and determines whether to adjust the de-icing control signal. According to the analysis result of the temperature data, the controller dynamically adjusts the de-icing control signal, such as adjusting the heating intensity, changing the opening and closing state of the de-icing module, or the opening degree of the baffle, to adapt to the actual temperature condition of the blade. The adjusted de-icing control signal is output to the corresponding de-icing module to guide precise de-icing operations.

[0100] By adjusting and optimizing the de-icing control signal based on real-time temperature information, the system response ability and de-icing efficiency are improved. By continuously monitoring the blade temperature, the controller can promptly detect and handle potential overheating or abnormal temperature conditions, enhancing the flexibility and adaptability of the de-icing system, thereby optimizing the de-icing effect.

[0101] Further, in some embodiments, when adjusting the de-icing control signal based on the real-time temperature data, the de-icing controller is specifically configured to: when the icing degree is mild and the real-time temperature data exceeds the preset temperature range, add an opening signal of the second de-icing module to the corresponding de-icing control signal; when the icing degree is moderate or severe, adjust the opening degree of the adjustable baffle in the second de-icing module based on the real-time temperature data.

[0102] Among them, the preset temperature range may refer to a pre-set temperature limit value used to determine whether the temperature of the fan blade has reached a level that requires specific de-icing measures. When the real-time temperature data exceeds this temperature range, it means that the temperature of the blade has suddenly decreased or increased, and additional de-icing measures may be needed to prevent the ice layer from forming too quickly or melting incompletely, or the operation of the de-icing module may need to be reduced to avoid unnecessary energy waste.

[0103] If the icing level is mild and the real-time temperature data is lower than this preset temperature range, it indicates that the icing level may increase. The controller will increase the activation signal of the second de-icing module in the corresponding de-icing control signal, and through the auxiliary heating of the second de-icing module, ensure the de-icing effect. If the icing level is moderate or severe, the controller will adjust the baffle opening of the adjustable baffle in the second de-icing module according to the real-time temperature data, so as to optimize the de-icing effect by adjusting the flow rate and speed of the hot air flow, and ensure that all parts of the blade can be effectively cleared.

[0104] By refining the logic of the de-icing controller to adjust the de-icing control signal based on the real-time temperature data, more precise and flexible control of the de-icing process is achieved, preventing mild icing from developing into severe ice accretion and improving the normal operation efficiency of the wind turbine.

[0105] On the basis of the above embodiments, the de-icing controller is connected to the wind turbine controller corresponding to the wind turbine blade; the de-icing controller is also used to obtain wind speed prediction data and adjust the de-icing control signal based on the wind speed prediction data, and the wind speed prediction data is determined based on lidar wind measurement in the wind turbine controller.

[0106] Among them, the wind speed prediction data can refer to the wind speed information within a future period of time predicted by specific means (such as lidar wind measurement). Lidar wind measurement is a method of using laser technology to measure wind speed and wind direction, which has the advantages of high precision, real-time performance and remote measurement.

[0107] Further, the de-icing controller establishes a connection with the wind turbine controller corresponding to the wind turbine blade. This connection enables the de-icing controller to obtain relevant data (such as wind speed prediction data) in the wind turbine controller and adjust the de-icing control signal accordingly. For example, before predicting a significant increase in wind speed, the controller may initiate the de-icing operation in advance to avoid the risks brought by de-icing at high wind speeds; or when predicting a decrease in wind speed, adjust the de-icing strategy to save energy. Another example is that when the predicted wind speed is greater than 15 m / s, the power of the dual heating system is overclocked by 20%, the heating power is increased in advance, and the overheat flow inertia compensation establishes a dynamic thermal balance to prevent secondary icing caused by external supercooling.

[0108] By predicting the change in wind speed, the de-icing controller can complete the de-icing operation in advance before the high wind speed arrives, avoiding the safety hazards brought by de-icing at high wind speeds; at the same time, adjusting the de-icing control signal according to the wind speed prediction data can make the de-icing strategy more in line with the actual situation and improve the de-icing effect and accuracy.

[0109] On the basis of the above embodiments, Figure 3 is a schematic flow chart of a segmented de-icing control method for a wind turbine blade provided by this application, as Figure 3 shown, this method includes:

[0110] S301. The de-icing controller obtains the icing data of the wind turbine blade, and generates a de-icing control signal based on the icing data. The de-icing control signal is used to adjust the opening and closing and control parameters of the de-icing module; the de-icing control signal is sent to the de-icing module.

[0111] S302. The de-icing module receives the de-icing control signal sent by the de-icing controller, and de-ices the wind turbine blade based on the de-icing control signal.

[0112] The segmented de-icing control method for wind turbine blades provided by the embodiments of the present application accurately obtains the icing data of the wind turbine blade, generates a targeted de-icing control signal, and realizes the precise control of the de-icing module. By adjusting the opening and closing and control parameters of the de-icing module, this method can perform targeted de-icing treatment on different regions according to the actual icing situation, ensuring that the de-icing process is more efficient and uniform; this method not only improves the de-icing effect, ensures the normal operation of the wind turbine blade under various climate conditions, but also optimizes the energy use, reduces unnecessary energy consumption, and thus improves the overall de-icing efficiency.

[0113] Figure 4 It is a schematic flow chart of the specific process of a segmented de-icing control method for wind turbine blades provided by the present application. As Figure 4 shown, on the basis of the Figure 3 embodiment, taking the dual heating system, namely the first de-icing module and the second de-icing module, as an example, the segmented de-icing control method for wind turbine blades is described in detail. The method includes:

[0114] 1). The controller judges the icing degree through the blade icing sensor, and judges and adjusts the de-icing level based on the icing degree (divided into mild, moderate and severe).

[0115] ①. When the icing degree is mild, the second heating component is turned on, the adjustable baffle is closed, and the hot air flow mainly blows to the blade tip (i.e., the third part of the blade), so that the blade tip can be heated up to prevent icing at the blade tip; and the temperature of the middle part of the blade (i.e., the second part of the blade) is judged in real time, and the first heating component is turned on according to the temperature situation to prevent icing of the blade;

[0116] ②. When the icing degree is moderate, the second heating component is turned on, the first heating component is turned on for auxiliary operation, and the adjustable baffle is partially opened to maintain the temperature of the blade;

[0117] ③. When the icing degree is severe, both the first and second heating components are turned on, and the density of the hot air flow is adjusted by the adjustable baffle at the blade tip, so that the temperature of the blade can be maintained for blade de-icing.

[0118] 2). Laser radar is used to measure the wind speed for wind speed perception, and the wind speed prediction data is used for the heating action of the de-icing system.

[0119] Among them, lidar wind measurement belongs to the wind measurement function of the fan. The fan controller analyzes the wind measurement data and predicts the wind speed prediction data. For example, the wind speed will immediately increase or decrease. Then the fan controller transmits the wind speed prediction data to the de-icing controller. When the de-icing controller monitors that the value in the wind speed prediction data exceeds the wind speed threshold adjusted by the preset strategy, such as a sudden increase in the predicted wind speed, the de-icing controller adjusts the control signal to let the de-icing module perform a larger heating action. For example, turbulent resistance enhanced heat transfer: when the predicted wind speed is greater than 15 m / s, the power of the dual heating system is overclocked by 20%, the heating power is increased in advance or the opening and closing of the baffle is adjusted, and the overheat flow inertia compensation establishes a dynamic thermal balance to prevent secondary icing due to external supercooling. This can prevent the sudden increase in the icing degree on the blade surface when the wind speed surges, and extend the service life of the blade.

[0120] 3) Backup heat sources for each other: When the first heating component or the second heating component fails, the other operates normally and continues to de-ice the fan blades.

[0121] ① Failure of the first heating component: The adjustable baffle is forced to close, and the second heating component takes over the heat supply at the blade tip;

[0122] ② Failure of the second heating component: The adjustable baffle is fully opened, and the first heating component operates overclocked in combination with the working conditions.

[0123] Thus, through the de-icing system that combines the root and middle blade heating systems with the opening and closing of the baffle, more flexible and efficient blade de-icing is achieved; combined with the blade heating control method according to the degree of blade icing (light, medium, and heavy icing degrees), de-icing of blades in various situations is realized, with higher de-icing efficiency and lower energy consumption; the heating method that uses lidar to identify the wind speed, perceives the changing wind speed conditions in advance, and makes the heater operate at high power in advance to resist the changing external conditions of the blade and establish a dynamic thermal balance of the blade; the de-icing method in which two groups of heating and de-icing mechanisms operate complementarily. When one group of heating systems is damaged, the other group continues to de-ice and can still perform de-icing.

[0124] The structural schematic diagram of the electronic device provided by this application is as follows Figure 5 Figure 5 As shown, the electronic device 50 provided in this embodiment includes: at least one processor 501 and a memory 502. Optionally, the device 50 further includes a communication component 503. Among them, the processor 501, the memory 502, and the communication component 503 are connected through a bus 504.

[0125] In the specific implementation process, at least one processor 501 executes the computer execution instructions stored in the memory 502, so that at least one processor 501 executes the above method.

[0126] For the specific implementation process of the processor 501, reference may be made to the above method embodiments. Their implementation principles and technical effects are similar, and will not be elaborated here in this embodiment.

[0127] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU for short), or other general-purpose processors, digital signal processors (DSP for short), application specific integrated circuits (ASIC for short), etc. The general-purpose processor may be a microprocessor or any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly implemented by the execution of the hardware processor, or implemented by the combination of the hardware and software modules in the processor.

[0128] The memory may include a high-speed random access memory (RAM), and may also include non-volatile memory (NVM), such as at least one disk memory.

[0129] The bus may be an industry standard architecture (ISA) bus, a peripheral component interconnect (PCI) bus, an extended industry standard architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0130] This application also provides a computer program product, including a computer program, which implements the above method when executed by a processor.

[0131] This application also provides a computer-readable storage medium, in which computer-executable instructions are stored, and when the processor executes the computer-executable instructions, the above method is implemented.

[0132] The above-readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0133] An exemplary readable storage medium is coupled to the processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in a device.

[0134] The division of units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be indirect couplings or communication connections through some interfaces, devices or units, and can be in electrical, mechanical or other forms.

[0135] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they can be located in one place or distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0136] In addition, the functional units in various embodiments of the present invention can be integrated in one processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0137] If a function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., all kinds of media that can store program codes.

[0138] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When this program is executed, it executes the steps including the above method embodiments; and the aforementioned storage medium includes: ROMs, RAMs, magnetic disks, or optical discs, etc., all kinds of media that can store program codes.

[0139] Finally, it should be noted that: After considering the specification and practicing the invention disclosed herein, those skilled in the art will easily think of other implementation schemes of the present invention. The present invention aims to cover any variations, uses, or adaptive changes of the present invention. These variations, uses, or adaptive changes follow the general principles of the present invention and include the common general knowledge or conventional technical means in the technical field of the present invention that are not disclosed in the present invention. It is not limited to the exact structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present invention is only limited by the appended claims.

Claims

1. A segmented de-icing system for a fan blade, characterized in that, Comprising: An ice removal controller and a plurality of ice removal modules; the ice removal controller is respectively connected to the plurality of ice removal modules; The ice removal controller is configured to obtain ice covering data of the fan blade, and based on the ice covering data, generate an ice removal control signal, the ice removal control signal being used to adjust the opening and closing and control parameters of the ice removal module; and send the ice removal control signal to the ice removal module; The ice removal module is configured to receive the ice removal control signal sent by the ice removal controller, and based on the ice removal control signal, remove ice from the fan blade.

2. The system according to claim 1, wherein When the ice removal module includes a first ice removal module and a second ice removal module, the fan blade includes a first part, a second part and a third part; the first ice removal module includes a first heating component, a first heating pipe and a fixed baffle; One end of the first heating component is fixed to the first part of the fan blade and is communicatively connected to the ice removal controller, and the other end of the first heating component is connected to the input end of the first heating pipe; the first heating component is configured to receive the ice removal control signal from the ice removal controller and output a first hot air flow; The output end of the first heating pipe is nestedly connected to the fixed baffle and extends to the second part of the fan blade; the first heating pipe is configured to convey the first hot air flow to the second part of the fan blade; The fixed baffle is fixed between the first part and the second part of the fan blade, and is used to isolate the first hot air and prevent the first hot air flow from diffusing to the first part of the fan blade; The fixed baffle is connected to the second ice removal module.

3. The system according to claim 2, characterized in that, The second ice removal module includes a second heating component, a second heating pipe and an adjustable baffle; One end of the second heating component is fixed to the first part of the fan blade and is communicatively connected to the ice removal controller, and the other end of the second heating component is connected to the input end of the second heating pipe; the second heating component is configured to receive the ice removal control signal from the ice removal controller and output a second hot air flow; The input end of the second heating pipe is connected to the other end of the second heating component and is nestedly connected to the fixed baffle, and the output end of the second heating pipe is nestedly connected to the adjustable baffle and extends to the third part of the fan blade; the second heating pipe is configured to convey the second hot air flow to the third part of the fan blade; The adjustable baffle is fixed between the second part and the third part of the fan blade, and is used to adjust the flow rate of the hot air flow flowing to the third part of the fan blade.

4. The system according to claim 3, characterized in that, The ice removal controller is further configured to: When the first heating component of the first ice removal module fails, close the adjustable baffle, and remove ice from the third part of the fan blade through the second ice removal module; When the second heating component of the second ice removal module fails, fully open the adjustable baffle, and remove ice from the second part and the third part of the fan blade through the first ice removal module.

5. The system according to any one of claims 1-4, characterized in that, When generating the ice removal control signal based on the ice covering data, the ice removal controller is specifically configured to: Based on the ice covering data, determine the degree of icing of the fan blade; Generate corresponding de-icing control signals according to the degree of icing to adjust the opening / closing and control parameters of the de-icing module, where the degree of icing includes mild, moderate, and severe.

6. The system according to claim 5, wherein When the de-icing module includes a first de-icing module and a second de-icing module, the control parameters include the heating intensity and the baffle opening degree of the adjustable baffle in the second de-icing module; When the degree of icing is mild, the corresponding de-icing control signals include the opening signal of the second de-icing module, the heating intensity, and the closing signal of the adjustable baffle in the second de-icing module; When the degree of icing is moderate, the corresponding de-icing control signals include the opening signals and heating intensity of the first de-icing module and the second de-icing module, and the opening signal and baffle opening degree of the adjustable baffle in the second de-icing module, where the control signal for the heating intensity of the second de-icing module is greater than that of the first de-icing module; When the degree of icing is severe, the corresponding de-icing control signals include the opening signals and heating intensity of the first de-icing module and the second de-icing module, and the opening signal and baffle opening degree of the adjustable baffle in the second de-icing module.

7. The system according to claim 6, wherein The de-icing controller is also used to obtain the real-time temperature data of the fan blade and adjust the de-icing control signal based on the real-time temperature data.

8. The system according to claim 7, wherein When the de-icing controller adjusts the de-icing control signal based on the real-time temperature data, it specifically is used for: When the degree of icing is mild and the real-time temperature data exceeds the preset temperature range, add the opening signal of the second de-icing module to the corresponding de-icing control signal; When the degree of icing is moderate or severe, adjust the baffle opening degree of the adjustable baffle in the second de-icing module based on the real-time temperature data.

9. The system according to any one of claims 1-4, characterized in that, The de-icing controller is connected to the fan controller corresponding to the fan blade; The de-icing controller is also used to obtain wind speed prediction data and adjust the de-icing control signal based on the wind speed prediction data, where the wind speed prediction data is determined based on lidar wind measurement in the fan controller.

10. A segmented ice removal control method for a fan blade, characterized in that, Applied to the fan blade segmented de-icing system according to any one of claims 1-9, the method includes: The de-icing controller obtains the icing data of the fan blade and generates a de-icing control signal based on the icing data, where the de-icing control signal is used to adjust the opening / closing and control parameters of the de-icing module; send the de-icing control signal to the de-icing module; The de-icing module receives the de-icing control signal sent by the de-icing controller and de-ices the fan blade based on the de-icing control signal.

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