Method, processor and system for preventing wind turbine blades from icing

Abstract

The present invention relates to the field of electrical engineering technology, and discloses a method, processor, and system for preventing fan blades from being covered with ice. By monitoring the micro-meteorological parameters of the environment in which the fan blades are located, when it is determined that the micro-meteorological parameters meet the preset deicing conditions, a gas-heat deicing device is started, and the blade surface temperature and blade surface icing conditions of the fan blades are monitored, so as to adjust the operating power of the gas-heat deicing device according to the blade surface temperature and blade surface icing conditions, until there is no ice on the blade surface of the fan blade or the operating power reaches a maximum value. The above method effectively improves the anti-icing effect of the fan blades and reduces the deicing energy consumption through the gas-heat deicing device, and determines the target operating power of the gas-heat deicing device by monitoring the blade surface temperature and blade surface icing conditions of the fan blades, so that the gas-heat deicing device operates according to the target operating power, effectively improving the operating efficiency of the deicing system.

Description

Technical Field

[0001] The present invention relates to the field of electrical engineering technology, and in particular to a method, a processor and a system for preventing wind turbine blades from being covered with ice. Background Art

[0002] With the large-scale application of clean energy such as wind power, wind power capacity will account for an increasingly larger proportion of electricity, and its impact on the safe and stable operation of the power system will also become increasingly greater. Wind farms are generally located on the top of a mountain with a high altitude and strong wind. In winter, wind turbine blades are very likely to be covered with ice, resulting in reduced output or even shutdown of wind turbines. Wind turbine icing causes wind turbine shutdown or even damage to the wind turbine, which will cause economic losses to the wind farm. Large-scale shutdown of wind turbines will also cause an imbalance in power supply and affect the reliable power supply of the power grid. Therefore, anti-icing and de-icing of wind turbines are difficult problems that need to be solved urgently. The existing methods for anti-icing and de-icing of wind turbine blades mainly include electric heating de-icing, gas heating de-icing, and coating de-icing. However, conventional electric heating de-icing on wind turbine blades is prone to lightning damage to the wind turbine; traditional gas heating de-icing and coating de-icing are inefficient, and the de-icing and de-icing effect is poor, and it is very difficult to de-ice the wind turbine blades. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, an object of the embodiments of the present invention is to provide a method, a processor and a system for preventing wind turbine blades from being covered with ice.

[0004] In order to achieve the above object, the present invention provides a method for preventing wind turbine blades from being covered with ice in a first aspect, comprising:

[0005] Monitor the micro-meteorological parameters of the environment in which the wind turbine blades are located;

[0006] Determine whether micro-meteorological parameters meet the preset de-icing conditions;

[0007] Start the gas-heat de-icing device;

[0008] Monitor the blade surface temperature and ice coverage of wind turbine blades;

[0009] The operating power of the gas-heat deicing device is adjusted according to the blade surface temperature and the ice coating on the blade surface until there is no ice coating on the blade surface of the fan blade or the operating power reaches a maximum value.

[0010] In an embodiment of the present invention, the preset deicing conditions include:

[0011] The ambient temperature parameter in the micro-meteorological parameter is less than or equal to the deicing temperature in the preset deicing condition; and

[0012] The air humidity parameter in the micro-meteorological parameters is greater than or equal to the deicing humidity in the preset deicing conditions.

[0013] In the embodiment of the present invention, the deicing temperature is zero degrees and the deicing humidity is 70%.

[0014] In an embodiment of the present invention, the operating power of the gas-heat deicing device is adjusted according to the blade surface temperature and the ice coating on the blade surface, including:

[0015] Determine the temperature difference adjustment coefficient and power benchmark reference value based on micro-meteorological parameters and ice coverage on the blade surface;

[0016] Determine the temperature difference between the blade surface temperature and zero degrees;

[0017] Determine the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power base reference value;

[0018] Adjust the operating power of the gas thermal deicing device to the target operating power.

[0019] In an embodiment of the present invention, determining the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power base reference value includes determining the target operating power according to formula (1):

[0020] (1)

[0021] in, represents the target operating power, , Indicates the maximum value of operating power, represents the temperature difference adjustment coefficient, Represents the temperature difference, Indicates the power base reference value.

[0022] A second aspect of the present invention provides a processor configured to implement the method for preventing wind turbine blades from being covered with ice as described in the above embodiment when executing.

[0023] A third aspect of the present invention provides a system for preventing wind turbine blades from being covered with ice, comprising:

[0024] An air-heat deicing device is used to deliver hot air to the internal cavity of the fan blades so that the hot air forms an internal circulation in the internal cavity;

[0025] A blade icing monitoring device includes the processor according to the above embodiment.

[0026] In an embodiment of the present invention, the fan blade includes a fan housing and an air-heat deicing device.

[0027] The gas-heat deicing device is installed in the fan housing;

[0028] The outer surface of the fan housing is coated with a hydrophobic energy-absorbing coating.

[0029] In an embodiment of the present invention, the gas-heat deicing device comprises:

[0030] An air delivery duct is installed in the internal cavity of the fan housing;

[0031] A blower connected to the air delivery duct and installed at the root of the blower housing; and

[0032] The heater is connected to the blower and installed at the root of the blower housing.

[0033] A fourth aspect of the present invention provides a machine-readable storage medium having instructions stored thereon, which, when executed by a processor, enables the processor to implement the method for preventing wind turbine blades from icing as described in the above embodiment.

[0034] Through the above technical scheme, the micro-meteorological parameters of the environment in which the fan blades are located are monitored. When it is determined that the micro-meteorological parameters meet the preset deicing conditions, the gas-heat deicing device is started, and the blade surface temperature and blade surface ice coverage of the fan blades are monitored, so as to adjust the operating power of the gas-heat deicing device according to the blade surface temperature and blade surface ice coverage, until there is no ice on the blade surface of the fan blade or the operating power reaches the maximum value. The gas-heat deicing device is used to effectively improve the anti-icing effect of the fan blades and reduce the deicing energy consumption. The target operating power of the gas-heat deicing device is determined by monitoring the blade surface temperature and blade surface ice coverage of the fan blades, so that the gas-heat deicing device can operate according to the target operating power, effectively improving the operating efficiency of the deicing system and realizing efficient anti-icing and deicing of the blades.

[0035] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0037] Figure 1 A schematic flow chart of a method for preventing wind turbine blades from being covered with ice according to an embodiment of the present invention;

[0038] Figure 2 The figure is a schematic block diagram of a system for preventing wind turbine blades from being covered with ice according to an embodiment of the present invention.

[0039] Description of Reference Numerals

[0040] 1. Gas-heat deicing device; 2. Blade ice monitoring device; 11. Heater; 12. Blower; 13. Air supply duct. DETAILED DESCRIPTION

[0041] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0042] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0044] Figure 1 FIG. 1 is a flow chart of a method for preventing wind turbine blades from icing according to an embodiment of the present invention. Figure 1 As shown, in an embodiment of the present invention, a method for preventing wind turbine blades from being covered with ice is provided. The method is described by taking the application of the method to a processor as an example. The method may include the following steps:

[0045] Step S100, monitoring micro-meteorological parameters of the environment in which the fan blades are located;

[0046] In this embodiment, it should be noted that the wind energy of wind power generation depends on the wind speed and air density. A wind farm with abundant wind resources, stable wind direction, concentrated wind energy distribution and low destructive wind speed is an ideal site for a wind farm. Therefore, a wind farm is generally located on a mountain top with a high altitude and strong wind. However, in winter, due to the influence of the terrain and climate of the wind farm, the wind turbine blades of the wind turbine are very prone to ice. Therefore, it is necessary to monitor the environmental status of the wind farm in a timely manner to respond to climate changes in real time and reduce the impact of the environment on the operation of the wind farm. Micro-meteorological parameters may include at least one of the temperature, humidity, wind speed, wind direction, etc. of the environment, and parameter information may be obtained by sensors arranged in the environment where the wind turbine blades are located. The method of monitoring the micro-meteorological parameters of the environment where the wind turbine blades are located may be real-time monitoring or timed monitoring, which may be determined according to the actual environmental conditions.

[0047] In this embodiment, for wind turbine blades that may be covered with ice, a hydrophobic energy-absorbing coating is applied to the outer surface of the wind turbine blade to delay ice formation on the wind turbine blade and accelerate de-icing of the wind turbine blade. When applying the coating, the outer surface of the windward side of the wind turbine blade is preferentially applied, for example, the hydrophobic energy-absorbing coating is applied to the area of ​​the wind turbine blade 20 meters from the blade root and 10 meters from the blade tip.

[0048] Specifically, the processor monitors the micro-meteorological parameters of the environment in which the wind turbine blades are located.

[0049] Step S200, determining whether the micro-meteorological parameters meet the preset deicing conditions;

[0050] In this embodiment, it should be noted that the preset deicing condition corresponds to the set deicing operation, and the preset deicing condition refers to a pre-set condition for triggering the deicing operation on the fan blades. When the micro-meteorological parameter meets the preset deicing condition, the deicing operation is triggered. If the micro-meteorological parameter does not meet the deicing condition, the deicing operation will not be triggered. For example, the set deicing operation is to start the gas-heat deicing device, then when the micro-meteorological parameter meets the preset deicing condition, the processor will execute the operation of starting the gas-heat deicing device.

[0051] Specifically, the processor needs to determine whether the monitored micro-meteorological parameters meet the preset de-icing conditions.

[0052] Specifically, the preset deicing conditions include:

[0053] The ambient temperature parameter in the micro-meteorological parameter is less than or equal to the deicing temperature in the preset deicing condition; and

[0054] The air humidity parameter in the micro-meteorological parameters is greater than or equal to the deicing humidity in the preset deicing conditions.

[0055] In the present embodiment, it should be noted that the preset deicing condition can limit any parameter in the micro-meteorological parameters, for example, limit the temperature condition, humidity condition, and wind speed condition. In the present embodiment, the preset deicing condition limits the ambient temperature parameter and the air humidity parameter in the micro-meteorological parameters. The ambient temperature parameter in the micro-meteorological parameters is limited by setting the deicing temperature, and the air humidity parameter in the micro-meteorological parameters is limited by setting the deicing humidity. Only when the ambient temperature parameter in the micro-meteorological parameters is less than or equal to the deicing temperature in the preset deicing condition and the air humidity parameter in the micro-meteorological parameters is greater than or equal to the deicing humidity in the preset deicing condition, is it determined that the micro-meteorological parameters meet the preset deicing condition.

[0056] Specifically, in this embodiment, the deicing temperature corresponding to the preset deicing conditions is zero degrees, and the deicing humidity is 70%.

[0057] It can be understood that in one embodiment, the preset de-icing conditions can also be adaptively adjusted according to the specific terrain, meteorological and other information in the environment where the wind farm is located. Specifically, other parameters in the micro-meteorological parameters (such as wind speed and wind direction) can be restricted, and different numerical settings can be made for the de-icing temperature and de-icing humidity in the preset de-icing conditions.

[0058] Step S300, starting the gas-heat deicing device;

[0059] In this embodiment, it should be noted that the gas-heat deicing device refers to a device that helps reduce or remove ice on the fan blades, including a blower and a heater installed at the root of the fan blades, and a pipe for conveying hot air arranged in the internal cavity of the fan blades. The gas-heat deicing device can make the hot air form an internal circulation flow in the fan blade cavity, thereby realizing gas-heat deicing and ice prevention of the fan blades.

[0060] Specifically, when the processor determines that the monitored micro-meteorological parameters meet the preset deicing conditions, it starts the gas-heat deicing device.

[0061] Step S400, monitoring the blade surface temperature and ice coverage of the fan blades;

[0062] In this embodiment, it should be noted that the blade surface temperature includes the temperature of the fan blade surface, and the blade surface ice condition includes whether the fan blade surface is covered with ice and the thickness of the ice. When the gas-heat deicing device is started, it will affect the state of the fan blade. In this embodiment, the blade surface temperature and blade surface ice condition of the fan blade are monitored when the gas-heat deicing device is started, so as to grasp the impact of the gas-heat deicing device on the fan blade in real time.

[0063] Specifically, the processor will monitor the blade surface temperature of the fan blades and the ice coating on the blade surface while starting the gas-heat deicing device.

[0064] Step S500, adjusting the operating power of the gas-heat deicing device according to the blade surface temperature and the ice coating on the blade surface until there is no ice coating on the blade surface of the fan blade or the operating power reaches a maximum value.

[0065] In this embodiment, it should be noted that when the gas-heat deicing device is started, there will be a default initial operating power. If the operating power of the gas-heat deicing device is not adjusted, the gas-heat deicing device will operate according to the initial operating power. The operating power of the gas-heat deicing device will be adjusted according to the blade surface temperature of the fan blade and the ice coating on the blade surface. After the gas-heat deicing device is started, the processor will continuously and adaptively adjust the operating power of the gas-heat deicing device according to the changes in the blade surface temperature and the ice coating on the blade surface, so that there is no ice coating on the blade surface of the fan blade and the blade surface temperature is maintained above 0 degrees. If the operating power of the gas-heat deicing device reaches the maximum value and there is still ice coating on the blade surface of the fan blade, the operating power of the gas-heat deicing device is maintained at the maximum value until there is no ice coating on the blade surface of the fan blade and the blade surface temperature is maintained above 0 degrees. In one embodiment, the maximum power operating time can also be preset. When the operating power of the gas thermal deicing device reaches the maximum value, after running at the maximum operating power for the preset maximum power operating time, the operating power is gradually reduced according to a certain rule, or the gas thermal deicing device is turned off.

[0066] Specifically, the processor will adjust the operating power of the gas-heat deicing device according to the blade surface temperature and the ice coating on the blade surface until there is no ice coating on the blade surface of the fan blade or the operating power reaches the maximum value.

[0067] The above method for preventing the fan blades from being covered with ice monitors the micro-meteorological parameters of the environment in which the fan blades are located, and when it is determined that the micro-meteorological parameters meet the preset deicing conditions, the gas-heat deicing device is started, and the blade surface temperature and blade surface icing of the fan blades are monitored, so as to adjust the operating power of the gas-heat deicing device according to the blade surface temperature and blade surface icing until there is no ice on the blade surface of the fan blade or the operating power reaches the maximum value. The above method effectively improves the anti-icing effect of the fan blades and reduces the deicing energy consumption through the gas-heat deicing device, and determines the target operating power of the gas-heat deicing device by monitoring the blade surface temperature and blade surface icing of the fan blades, so that the gas-heat deicing device operates according to the target operating power, effectively improving the operating efficiency of the deicing system, and the fan blades are coated with a hydrophobic energy-absorbing coating, which overcomes the problems of traditional single gas-heat deicing, low anti-icing efficiency of the coating, and poor deicing and anti-icing effect, and improves the anti-icing effect of the fan blades as a whole.

[0068] In one embodiment, the operating power of the gas-heat deicing device is adjusted according to the blade surface temperature and the ice coating on the blade surface, including:

[0069] Step a, determining a temperature difference adjustment coefficient and a power base reference value based on micro-meteorological parameters and ice coverage on the blade surface;

[0070] Step b, determining the temperature difference between the blade surface temperature and zero degrees;

[0071] Step c, determining the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power base reference value;

[0072] Step d, adjusting the operating power of the gas-heat deicing device to the target operating power.

[0073] In this embodiment, it should be noted that after the gas-heat deicing device is started, hot air will form an internal circulation flow in the internal cavity of the fan blade, while there is no hot air supply on the outer surface of the fan blade, and the outer surface will increase the heat loss in the internal cavity of the fan blade, so the temperature difference adjustment coefficient is used to correct the temperature difference calculation. The specific value of the temperature difference adjustment coefficient is related to the terrain, meteorology and other environments of the location of the wind farm, and can be obtained through a large number of experiments or experience. The power reference value represents the initial operating power when the gas-heat deicing device is started. The power reference value is related to the terrain, meteorology and other environments of the location of the wind farm. Based on different environmental conditions, the power reference value can have different set values, and the power reference value can be obtained through a large number of experiments or experience. The target operating power refers to the operating power to which the gas-heat deicing device will be adjusted, and the target operating power is determined by the temperature difference, the temperature difference adjustment coefficient and the power reference value.

[0074] Specifically, the processor will determine the temperature difference adjustment coefficient and the power baseline reference value based on the micrometeorological parameters and the ice coverage on the blade surface, and determine the temperature difference between the blade surface temperature and zero degrees, so as to determine the target operating power of the gas thermal deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power baseline reference value, thereby adjusting the operating power of the gas thermal deicing device to the target operating power, so that the gas thermal deicing device operates according to the target operating power.

[0075] In one embodiment, determining the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient, and the power base reference value includes determining the target operating power according to formula (1):

[0076] (1)

[0077] in, represents the target operating power, , Indicates the maximum value of operating power, represents the temperature difference adjustment coefficient, Represents the temperature difference, Indicates the power base reference value.

[0078] In this embodiment, it should be noted that when the gas-heat deicing device is just started, the operating power is the power reference value, and the processor determines the target operating power according to the temperature difference adjustment coefficient, the power reference value, and the temperature difference between the blade surface temperature and zero degrees. For example, the wind speed at the wind farm is 10m / s, the humidity is 99%, and the more severe the ice is, Take 1kW / ℃, Take the value as 25kW. Assume that the difference between the blade surface temperature and 0 degrees is If the temperature is -5℃, the gas-heat power system of a single blade can be determined to be 30kW (-(-5)*1+25=30).

[0079] In the prior art, the anti-icing and de-icing methods for fan blades mainly include electric heating de-icing, gas heating de-icing, paint anti-icing and other methods. However, electric heating de-icing on conventional fan blades is prone to lightning damage to the fan, and traditional gas heating de-icing and paint anti-icing are inefficient and have poor de-icing and de-icing effects, making it very difficult to de-ice fan blades. The embodiment of the present invention monitors the micro-meteorological parameters of the environment in which the fan blades are located, and when it is determined that the micro-meteorological parameters meet the preset de-icing conditions, the gas thermal de-icing device is started, and the blade surface temperature and the ice coverage of the blade surfaces of the fan blades are monitored, so as to adjust the operating power of the gas thermal de-icing device according to the blade surface temperature and the ice coverage of the blade surfaces, until there is no ice on the blade surfaces of the fan blades or the operating power reaches a maximum value, and the gas thermal de-icing device is used to effectively improve the anti-icing effect of the fan blades and reduce the de-icing energy consumption, and the target operating power of the gas thermal de-icing device is determined by monitoring the blade surface temperature and the ice coverage of the blade surfaces of the fan blades, so that the gas thermal de-icing device operates according to the target operating power, effectively improving the operating efficiency of the de-icing system, and the fan blades are coated with a hydrophobic energy-absorbing coating, which overcomes the problems of traditional single gas thermal de-icing, low anti-icing efficiency of the coating, and poor de-icing and anti-icing effect, and improves the anti-icing effect of the fan blades as a whole.

[0080] An embodiment of the present invention provides a processor configured to implement the method for preventing wind turbine blades from being covered with ice as described in the above embodiment when executing.

[0081] An embodiment of the present invention provides a system for preventing wind turbine blades from being covered with ice, comprising:

[0082] An air-heat deicing device is used to deliver hot air to the internal cavity of the fan blades so that the hot air forms an internal circulation in the internal cavity;

[0083] A blade icing monitoring device includes the processor according to the above embodiment.

[0084] In an embodiment of the present invention, the fan blade includes a fan housing and an air-heat deicing device.

[0085] The gas-heat deicing device is installed in the fan housing;

[0086] The outer surface of the fan housing is coated with a hydrophobic energy-absorbing coating.

[0087] In an embodiment of the present invention, the gas-heat deicing device comprises:

[0088] An air delivery duct is installed in the internal cavity of the fan housing;

[0089] A blower connected to the air delivery duct and installed at the root of the blower housing; and

[0090] The heater is connected to the blower and installed at the root of the blower housing.

[0091] refer to Figure 2 , Figure 2 The system for preventing icing of fan blades according to an embodiment of the present invention is a schematic block diagram, comprising an air-heat deicing device 1 and a blade icing monitoring device 2, wherein the air-heat deicing device 1 comprises an air duct 13 installed in an internal cavity of a fan housing (not shown); a blower 12 connected to the air duct 13 and installed at the root of the fan housing; and a heater 11 connected to the blower 12 and installed at the root of the fan housing.

[0092] In the embodiment of the present invention, the gas-heat deicing device 1 can make the hot air form an internal circulation flow in the fan blade cavity, so as to realize the gas-heat anti-icing and deicing of the fan blades. The outer surface of the fan housing is coated with a hydrophobic energy-absorbing coating, which can delay the icing of the fan blades and accelerate the deicing of the fan blades.

[0093] In one embodiment, the processor is configured to: monitor the micro-meteorological parameters of the environment in which the fan blades are located; determine that the micro-meteorological parameters meet preset de-icing conditions; start the gas-thermal de-icing device; monitor the blade surface temperature of the fan blades and the ice coverage on the blade surfaces; adjust the operating power of the gas-thermal de-icing device according to the blade surface temperature and the ice coverage on the blade surfaces until there is no ice on the blade surfaces of the fan blades or the operating power reaches a maximum value.

[0094] In one embodiment, the preset deicing condition includes: the ambient temperature parameter in the micro-meteorological parameter is less than or equal to the deicing temperature in the preset deicing condition; and the air humidity parameter in the micro-meteorological parameter is greater than or equal to the deicing humidity in the preset deicing condition. Specifically, the deicing temperature is zero degrees and the deicing humidity is 70%.

[0095] In one embodiment, the processor is configured to: determine the temperature difference adjustment coefficient and the power reference value based on the micro-meteorological parameters and the ice coverage on the blade surface; determine the temperature difference between the blade surface temperature and zero degrees; determine the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power reference value; and adjust the operating power of the gas-heat deicing device to the target operating power. Determining the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power reference value includes determining the target operating power according to formula (1): (1) Among them, represents the target operating power, , Indicates the maximum value of operating power, represents the temperature difference adjustment coefficient, Represents the temperature difference, Indicates the power base reference value.

[0096] An embodiment of the present invention provides a machine-readable storage medium, on which instructions are stored. When the instructions are executed by a processor, the processor is configured to execute the above-mentioned method for preventing wind turbine blades from being covered with ice.

[0097] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0098] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

[0099] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1A device that provides the functions specified in a block or multiple blocks.

[0100] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0101] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0102] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0103] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0104] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0105] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0106] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A method for preventing wind turbine blades from being covered with ice, characterized in that: include: Monitor the micro-meteorological parameters of the environment in which the wind turbine blades are located; Determining that the micro-meteorological parameters meet preset deicing conditions; Start the gas-heat de-icing device; Monitoring the blade surface temperature and ice coverage of the fan blades; The operating power of the gas-heat deicing device is adjusted according to the surface temperature of the blade and the ice coating on the surface of the blade until there is no ice coating on the surface of the fan blade or the operating power reaches a maximum value; The step of adjusting the operating power of the gas-heat deicing device according to the blade surface temperature and the ice coating on the blade surface comprises: Determine a temperature difference adjustment coefficient and a power base reference value based on the micro-meteorological parameters and the ice coverage on the blade surface; Determining the temperature difference between the blade surface temperature and zero degrees; Determining a target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient, and the power base reference value; The operating power of the gas thermal deicing device is adjusted to the target operating power.

2. The method according to claim 1, characterized in that The preset deicing conditions include: The ambient temperature parameter in the micro-meteorological parameter is less than or equal to the deicing temperature in the preset deicing condition; and The air humidity parameter in the micro-meteorological parameter is greater than or equal to the deicing humidity in the preset deicing condition.

3. The method according to claim 2, characterized in that The deicing temperature is zero degrees, and the deicing humidity is 70%.

4. The method according to claim 1, characterized in that: Determining the target operating power of the gas-heat deicing device according to the temperature difference, the temperature difference adjustment coefficient and the power base reference value includes determining the target operating power according to formula (1): P i =-kΔT i +P0 (1) Among them, P i Indicates the target operating power, 0≤P i ≤P max , P max Indicates the maximum operating power, k indicates the temperature difference adjustment coefficient, ΔT i represents the temperature difference, and P0 represents the power reference value.

5. A processor, characterized in that: The method is configured to perform the method for preventing icing of wind turbine blades according to any one of claims 1 to 4.

6. A system for preventing wind turbine blades from icing, characterized in that: include: An air-heat deicing device, used for delivering hot air to the internal cavity of the fan blades so that the hot air forms an internal circulation in the internal cavity; A blade icing monitoring device comprises the processor according to claim 5.

7. The system according to claim 6, characterized in that The fan blade comprises a fan housing and an air-heat deicing device, The gas-heat deicing device is installed in the fan housing; The outer surface of the fan housing is coated with a hydrophobic energy-absorbing coating.

8. The system according to claim 7, characterized in that The gas-heat deicing device comprises: An air delivery duct is installed in the internal cavity of the fan housing; a blower, connected to the air delivery duct and installed at the root of the blower housing; and The heater is connected to the blower and installed at the root of the blower housing.

9. A machine-readable storage medium having instructions stored thereon, characterized in that: When the instructions are executed by a processor, the processor implements the method for preventing wind turbine blades from being covered with ice according to any one of claims 1 to 4.

Images