CN118462471B - Control method and device for static cable-releasing of fan, controller and storage medium - Google Patents
Control method and device for static cable-releasing of fan, controller and storage medium Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/329—Azimuth or yaw angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
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Abstract
The application provides a control method and device for static cable-releasing of a fan, a controller and a storage medium. The method comprises the following steps: when the fan is detected to be in a standby state, acquiring a cable twisting angle of the fan; if the torsion cable angle is larger than the static cable-releasing angle threshold value, determining an absolute value of the average change rate of the wind speed, an average wind speed value and a wind direction consistency value in a preset prediction time period; acquiring a yaw total angle of the fan; determining an absolute value threshold value of the average change rate of the wind speed within a preset prediction time according to the yaw total angle; determining a wind speed average value threshold value in preset prediction time according to the yaw total angle; determining a wind direction consistency value threshold value in preset prediction time according to the yaw total angle; and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to conduct static cable untwisting. The method can avoid the loss of the generated energy.
Description
Technical Field
The application relates to the technical field of yaw control of wind generating sets, in particular to a static untwisting control method and device of a fan, a controller and a storage medium.
Background
The static cable-releasing action is that the fan starts from a standby state in a low wind state, and finally realizes the whole process of cable releasing and preparing for power generation through the quiet period and the yaw adjustment. This process is an important step in ensuring that the wind turbine can quickly and efficiently start generating electricity when the wind speed reaches the demand.
Currently, in the prior art, if it is determined that the yaw range is in, and the current wind speed is in the breeze grade wind speed, static cable untwisting is performed.
However, if the wind speed suddenly rises, the fan may not immediately resume power generation due to the ongoing static untwisting, resulting in a loss of power generation.
Disclosure of Invention
The application provides a control method, a device, a controller and a storage medium for static cable-releasing of a fan, which are used for solving the technical problem of power generation loss.
In a first aspect, the present application provides a method for controlling static cable-releasing of a fan, including:
When the fan is detected to be in a standby state, acquiring a cable twisting angle of the fan; if the torsion cable angle is larger than the static cable-releasing angle threshold value, determining an average change rate absolute value of the wind speed in a preset prediction time period, determining an average wind speed in the preset prediction time period, and determining a wind direction consistency value in the preset prediction time period; acquiring a yaw total angle of the fan; determining an absolute value threshold value of the average change rate of the wind speed within a preset prediction time according to the yaw total angle; determining a wind speed average value threshold value in preset prediction time according to the yaw total angle; determining a wind direction consistency value threshold value in preset prediction time according to the yaw total angle; and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to conduct static cable untwisting.
In one possible design, the calculation formula for determining the absolute value of the average change rate of the wind speed in the preset prediction period is as follows:
In the method, in the process of the invention, Represents the absolute value of the average change rate of the wind speed,Represents the absolute value of the variation of the wind speed in the preset prediction time period,Representing a preset predicted time period.
In one possible design, the calculation formula for determining the average value of the wind speed in the preset prediction period is:
In the method, in the process of the invention, The wind speed average value is represented, the wind speeds at a plurality of moments are recorded in a preset prediction time period, v (i) represents the wind speed at the ith moment, and n represents the number of the moments.
In one possible design, the calculation formula for determining the wind direction consistency value in the preset prediction time period is as follows:
In the method, in the process of the invention, The wind direction standard deviation is expressed, and the wind direction standard deviation is determined to be a wind direction consistency value; θ represents an average value of wind direction in a preset predicted period, θ j represents a value of wind direction at a j-th time in the preset predicted period, and n represents the number of wind direction values recorded in the preset predicted period.
In one possible design, the calculation formula for determining the absolute value threshold value of the average change rate of the wind speed within the preset prediction time according to the yaw total angle is as follows:
In the method, in the process of the invention, Represents an absolute value threshold value of the average change rate of wind speed,Represents an absolute value threshold value of the average change rate of the initial wind speed,An adjustment parameter representing the absolute value of the average rate of change of wind speed,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In one possible design, the calculation formula for determining the average wind speed threshold value in the preset prediction time according to the yaw total angle is as follows:
In the method, in the process of the invention, Represents the average value threshold value of the wind speed,Represents an average value threshold value of the initial wind speed,An adjustment parameter representing the average value of the wind speed,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In one possible design, according to the yaw total angle, a calculation formula for determining a wind direction consistency value threshold value within a preset prediction time is as follows:
In the method, in the process of the invention, Represents a wind direction consistency value threshold value,Represents an initial wind direction consistency value threshold value,An adjustment parameter indicating a wind direction consistency value,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In a second aspect, the present application provides a static untwisting control device for a fan, including:
The first acquisition module is used for acquiring the torsion cable angle of the fan when the fan is detected to be in a standby state.
The first determining module is used for determining an absolute value of an average change rate of wind speed in a preset prediction time period if the cable twisting angle is larger than a static cable untwisting angle threshold value, determining an average value of wind speed in the preset prediction time period and determining a wind direction consistency value in the preset prediction time period.
And the second acquisition module is used for acquiring the yaw total angle of the fan.
And the second determining module is used for determining an absolute value threshold value of the average change rate of the wind speed in the preset prediction time according to the yaw total angle.
And the third determining module is used for determining a wind speed average value threshold value in preset prediction time according to the yaw total angle.
And the fourth determining module is used for determining a wind direction consistency value threshold value in preset prediction time according to the yaw total angle.
And the judging module is used for controlling the fan to perform static cable-untwisting if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the wind direction consistency value is larger than the wind direction consistency value threshold.
In a third aspect, the present application provides a controller comprising:
at least one processor and memory;
the memory stores computer-executable instructions;
The at least one processor executes computer-executable instructions stored in the memory, such that the at least one processor performs the method of controlling static untwisting of a wind turbine as described in the first aspect and the various possible designs of the first aspect.
In a fourth aspect, the present application provides a computer storage medium, in which computer-executable instructions are stored, which when executed by a processor, implement the control method for static untwisting of a fan according to the first aspect and the various possible designs of the first aspect.
In a fifth aspect, the present application provides a computer program product, comprising a computer program, which when executed by a processor, implements a method for controlling static untwisting of a fan according to the above first aspect and the various possible designs of the first aspect.
According to the control method, the device, the controller and the storage medium for static cable-releasing of the fan, when the torsion angle of the fan is larger than the static cable-releasing angle threshold value, the absolute value of the average change rate of the wind speed, the average wind speed value and the wind direction consistency value in the preset prediction time period are determined; determining an absolute value threshold value of an average change rate of wind speed, an average value threshold value of wind speed and a consistency value threshold value of wind direction in a preset prediction time period according to the yaw total angle of the fan; and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to conduct static cable untwisting. The device can avoid the situation that the power generation cannot be immediately recovered due to sudden rise of wind speed during static cable release, thereby avoiding loss of power generation capacity.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a schematic flow chart of a method for controlling static untwisting of a fan according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a static cable-releasing control device of a fan according to an embodiment of the present application;
Fig. 3 is a schematic hardware structure of a controller according to an embodiment of the present application.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the application. Rather, they are merely examples of apparatus and methods consistent with aspects of the application as detailed in the accompanying claims.
The static cable-releasing action is that the fan starts from a standby state in a low wind state, and finally realizes the whole process of cable releasing and preparing for power generation through the quiet period and the yaw adjustment. This process is an important step in ensuring that the wind turbine can quickly and efficiently start generating electricity when the wind speed reaches the demand. Currently, in the prior art, if it is determined that the yaw range is in, and the current wind speed is in the breeze grade wind speed, static cable untwisting is performed. However, if the wind speed suddenly rises, the fan may not immediately resume power generation due to the ongoing static untwisting, resulting in a loss of power generation.
In order to solve the technical problems, the embodiment of the application provides the following technical ideas: considering that if the wind speed suddenly rises, the fan may not immediately resume power generation due to static untwisting, thereby causing power generation loss. The inventor thinks of determining an absolute value of an average change rate of wind speed, an average wind speed value and a uniformity value of wind direction within a preset prediction time period; determining an absolute value threshold value of an average change rate of wind speed, an average value threshold value of wind speed and a consistency value threshold value of wind direction in a preset prediction time period according to the yaw total angle of the fan; and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to conduct static cable untwisting. The device can avoid the situation that the power generation cannot be immediately recovered due to sudden rise of wind speed during static cable release, thereby avoiding loss of power generation capacity.
The application provides a control method for static cable-releasing of a fan, which aims to solve the technical problems in the prior art.
Fig. 1 is a flow chart of a control method for static cable-releasing of a fan according to an embodiment of the present application, where the execution body of the embodiment may be a controller or other devices with similar functions, and the embodiment is not particularly limited herein. As shown in fig. 1, the method includes:
s101: when the fan is detected to be in a standby state, the torsion cable angle of the fan is obtained.
The cable twisting angle of the fan is an angle at which a cable connecting the top of the tower and the interior of the engine room is twisted along with the rotation of a yaw system of the fan in the operation process. Specifically, the wind turbine continuously adjusts the direction of the nacelle in order to always align with the wind direction and obtain the maximum wind energy, which is called yaw. As the nacelle is yawed, the cable is gradually twisted. To avoid excessive twisting and damage to the cable, fans are required to perform a untwisting operation periodically, i.e., to restore the cable to an original state by reversing yaw or to reduce the twist angle.
Alternatively, the torsion condition of the cable may be monitored by a sensor or a counter to obtain the current torsion angle.
S102: if the torsion cable angle is larger than the static cable-untying angle threshold value, determining an average change rate absolute value of the wind speed in a preset prediction time period, determining an average wind speed in the preset prediction time period, and determining a wind direction consistency value in the preset prediction time period.
In this embodiment, if the cable twisting angle is smaller than the static cable untwisting angle threshold, it is indicated that the fan exits the static cable untwisting state or there is no static cable untwisting requirement.
The static cable-releasing angle threshold is a preset safety threshold, and when the cable-twisting angle exceeds the preset safety threshold, the cable-releasing operation is triggered to prevent the cable from being damaged due to excessive twisting. Alternatively, the static untwisting angle threshold may be 500 °.
In the present embodiment, when the torsion angle is greater than the static untwisting angle threshold, this time is set to t=0 time. And determining an absolute value of the average change rate of the wind speed, an average wind speed value and a uniformity value of the wind direction in a preset prediction time period at the time t=0.
Alternatively, the preset predicted period may be 10×t, where the preset predicted period is related to the total duration of static fan untwisting. Where T is the prediction step size, T may be 2 minutes.
The absolute value of the average change rate of wind speed is a physical quantity describing the change speed of wind speed with time, and is generally used for measuring the stability or change degree of wind speed in a certain period of time. Specifically, the average change rate absolute value of the wind speed refers to the ratio of the absolute value of the change amount of the wind speed to time within a preset prediction period.
Specifically, a calculation formula for determining an absolute value of an average change rate of wind speed within a preset prediction time period is as follows:
In the method, in the process of the invention, Represents the absolute value of the average change rate of the wind speed,Represents the absolute value of the variation of the wind speed in the preset prediction time period,Representing a preset predicted time period.
In the present embodiment of the present invention, in the present embodiment,The value of (2) depends on the prediction accuracy.
Wherein, the wind speed average value is used for describing the average level of wind speed in a preset prediction time period.
Specifically, a calculation formula for determining an average value of wind speeds in a preset prediction period is:
In the method, in the process of the invention, The wind speed average value is represented, the wind speeds at a plurality of moments are recorded in a preset prediction time period, v (i) represents the wind speed at the ith moment, and n represents the number of the moments.
The wind direction consistency value is a statistical parameter for measuring the wind direction change stability in a preset prediction time period. It reflects the uniformity or trend of the wind direction. Alternatively, a variety of methods may be employed to determine the uniformity value of the wind direction, such as wind direction standard deviation, wind direction frequency distribution method, wind direction change rate method, and the like.
In this embodiment, the wind direction standard deviation is used to measure the wind direction consistency value. The standard deviation of wind direction is used to measure the degree to which each wind direction value in the wind direction data set deviates from the average wind direction, and reflects the variability or consistency of the wind direction.
Specifically, a calculation formula for determining the wind direction consistency value in the preset prediction time period is as follows:
In the method, in the process of the invention, The wind direction standard deviation is expressed, and the wind direction standard deviation is determined to be a wind direction consistency value; θ represents an average value of wind direction in a preset predicted period, θ j represents a value of wind direction at a j-th time in the preset predicted period, and n represents the number of wind direction values recorded in the preset predicted period.
S103: and obtaining the yaw total angle of the fan.
The yaw total angle is historical yaw data of the fan in the period from the standby of the breeze to the start-up of the fan, and the yaw total angle comprises two yaw processes of yawing the breeze and yawing the cable, and is an index for indirectly measuring the fatigue degree of the yaw mechanism.
When the yaw total angle is increased, the absolute value of the average change rate of the wind speed, the average wind speed and the threshold value corresponding to the wind direction consistency value are also increased.
S104: and determining an absolute value threshold value of the average change rate of the wind speed within a preset prediction time according to the yaw total angle.
Specifically, according to the yaw total angle, a calculation formula for determining an absolute value threshold value of an average change rate of wind speed within a preset prediction time is as follows:
In the method, in the process of the invention, Represents an absolute value threshold value of the average change rate of wind speed,Represents an absolute value threshold value of the average change rate of the initial wind speed,An adjustment parameter representing the absolute value of the average rate of change of wind speed,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In the present embodiment, whenIn the time-course of which the first and second contact surfaces,=1. When (when)In the time-course of which the first and second contact surfaces,。
Alternatively, the process may be carried out in a single-stage,The value of 0.05 can be set in advance according to actual conditions.
S105: and determining a wind speed average value threshold value in preset prediction time according to the yaw total angle.
Specifically, according to the yaw total angle, a calculation formula for determining a wind speed average value threshold value in a preset prediction time is as follows:
In the method, in the process of the invention, Represents the average value threshold value of the wind speed,Represents an average value threshold value of the initial wind speed,An adjustment parameter representing the average value of the wind speed,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In the present embodiment, whenIn the time-course of which the first and second contact surfaces,=1. When (when)In the time-course of which the first and second contact surfaces,。
Alternatively, the process may be carried out in a single-stage,The value of 0.05 can be set in advance according to actual conditions.
S106: and determining a wind direction consistency value threshold value in a preset prediction time according to the yaw total angle.
Specifically, according to the yaw total angle, a calculation formula for determining a wind direction consistency value threshold value in a preset prediction time is as follows:
In the method, in the process of the invention, Represents a wind direction consistency value threshold value,Represents an initial wind direction consistency value threshold value,An adjustment parameter indicating a wind direction consistency value,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In the present embodiment, whenIn the time-course of which the first and second contact surfaces,=1. When (when)In the time-course of which the first and second contact surfaces,。
Alternatively, the process may be carried out in a single-stage,The value of 0.05 can be set in advance according to actual conditions.
S107: and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to conduct static cable untwisting.
In this embodiment, the absolute value of the average change rate of wind speed is smaller than the threshold value of the absolute value of the average change rate of wind speed, and the absolute value of the average change rate of wind speed is used for measuring the wind speed stability, and when the wind speed is stable, the static cable releasing is suitable for being performed; the wind speed average value is larger than a wind speed average value threshold value, the wind speed average value is used for measuring the wind speed, and when the predicted wind speed is large enough, static cable untwisting is performed; the wind direction consistency value is greater than a wind direction consistency value threshold: the wind direction consistency value is used for measuring the wind direction change speed, and when the wind direction change is slow, namely the wind direction is stable, static cable disassembly is suitable.
In summary, when the torsion angle of the fan is larger than the static cable-releasing angle threshold value, determining an absolute value of the average change rate of the wind speed, an average wind speed value and a consistency value of the wind direction in a preset prediction time period; determining an absolute value threshold value of an average change rate of wind speed, an average value threshold value of wind speed and a consistency value threshold value of wind direction in a preset prediction time period according to the yaw total angle of the fan; and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to conduct static cable untwisting. The device can avoid the situation that the power generation cannot be immediately recovered due to sudden rise of wind speed during static cable release, thereby avoiding loss of power generation capacity. In addition, the absolute value threshold value of the average change rate of wind speed, the average value threshold value of wind speed and the consistency value threshold value of wind direction are dynamically adjusted according to the total yaw angle, so that the static yaw cable-releasing time can be adaptively controlled, and the adaptivity is improved.
In another embodiment of the present application, on the basis of the foregoing embodiment, the case where the absolute value of the average change rate of wind speed is smaller than the absolute value threshold of the average change rate of wind speed, the average value of wind speed is greater than the average value threshold of wind speed, and the uniformity value of wind direction is greater than the uniformity value threshold of wind direction is described in detail, where the execution subject of the embodiment may be a controller, or may be other devices with similar functions, as described in detail below:
Specifically, if the absolute value of the average change rate of the wind speed is not simultaneously satisfied and is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, the absolute value of the average change rate of the wind speed, the average value of the wind speed and the consistency value of the wind direction in a preset prediction time period are determined again at the next moment; and determining an absolute value threshold value of the average change rate of the wind speed, an average value threshold value of the wind speed and a consistency value threshold value of the wind direction in a preset prediction time period according to the yaw total angle of the fan. And continuing to circulate the judging process until the condition is met.
Optionally, the next time point may be t+t, where T is a time when the cable twisting angle is greater than the static cable untwisting angle threshold, and T is a preset prediction step.
In summary, the fan can dynamically adjust whether to perform static cable releasing according to the wind speed and the wind direction which are predicted in real time, so that the static yaw cable releasing time can be adaptively controlled, and the self-adaptability is improved.
Fig. 2 is a schematic structural diagram of a static cable-releasing control device for a fan according to an embodiment of the present application. As shown in fig. 2, the static untwisting control device of the fan comprises: a first acquisition module 201, a first determination module 202, a second acquisition module 203, a second determination module 204, a third determination module 205, a fourth determination module 206, and a decision module 207.
The first obtaining module 201 is configured to obtain a cable twisting angle of the fan when the fan is detected to be in a standby state.
The first determining module 202 is configured to determine an absolute value of an average change rate of wind speed in a preset predicted time period, determine an average value of wind speed in the preset predicted time period, and determine a wind direction consistency value in the preset predicted time period if the cable twisting angle is greater than a static cable untwisting angle threshold.
And the second acquisition module 203 is used for acquiring the yaw total angle of the fan.
The second determining module 204 is configured to determine an absolute value threshold of an average change rate of the wind speed within a preset prediction time according to the yaw total angle.
And a third determining module 205, configured to determine a wind speed average value threshold value within a preset prediction time according to the yaw total angle.
A fourth determining module 206, configured to determine a wind direction consistency value threshold within a preset prediction time according to the yaw total angle.
The determining module 207 is configured to control the fan to perform static cable-releasing if the average wind speed change rate is smaller than the average wind speed change rate threshold, the average wind speed is greater than the average wind speed threshold, and the wind direction consistency value is greater than the wind direction consistency value threshold.
In one possible design, the calculation formula of the first determining module 202 is:
In the method, in the process of the invention, Represents the absolute value of the average change rate of the wind speed,Represents the absolute value of the variation of the wind speed in the preset prediction time period,Representing a preset predicted time period.
In one possible design, the calculation formula of the first determining module 202 is:
In the method, in the process of the invention, The wind speed average value is represented, the wind speeds at a plurality of moments are recorded in a preset prediction time period, v (i) represents the wind speed at the ith moment, and n represents the number of the moments.
In one possible design, the calculation formula of the first determining module 202 is:
In the method, in the process of the invention, The wind direction standard deviation is expressed, and the wind direction standard deviation is determined to be a wind direction consistency value; θ represents an average value of wind direction in a preset predicted period, θ j represents a value of wind direction at a j-th time in the preset predicted period, and n represents the number of wind direction values recorded in the preset predicted period.
In one possible design, the calculation formula of the second determining module 204 is:
In the method, in the process of the invention, Represents an absolute value threshold value of the average change rate of wind speed,Represents an absolute value threshold value of the average change rate of the initial wind speed,An adjustment parameter representing the absolute value of the average rate of change of wind speed,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In one possible design, the calculation formula of the third determining module 205 is:
In the method, in the process of the invention, Represents the average value threshold value of the wind speed,Represents an average value threshold value of the initial wind speed,An adjustment parameter representing the average value of the wind speed,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
In one possible design, the calculation formula of the fourth determination module 206 is:
In the method, in the process of the invention, Represents a wind direction consistency value threshold value,Represents an initial wind direction consistency value threshold value,An adjustment parameter indicating a wind direction consistency value,Representing the coefficient of the adjustment parameter,Indicating the total angle of yaw,Representing a static untwisting angle threshold.
Fig. 3 is a schematic hardware structure of a controller according to an embodiment of the present application. As shown in fig. 3, the controller of the present embodiment includes: at least one processor 301 and a memory 302; the memory stores computer-executable instructions; at least one processor executes computer-executable instructions stored in the memory that cause the at least one processor to perform the method of controlling static untwisting of a wind turbine as described above.
Alternatively, the memory 302 may be separate or integrated with the processor 301.
When the memory 302 is provided separately, the controller further comprises a bus 303 for connecting said memory 302 and the processor 301.
The embodiment of the application also provides a computer readable storage medium, wherein computer execution instructions are stored in the computer readable storage medium, and when a processor executes the computer execution instructions, the control method for static cable disconnection of the fan is realized.
The embodiment of the application also provides a computer program product, which comprises a computer program, wherein the computer program is stored in a computer storage medium, the computer program can be read from the computer storage medium by at least one processor, and the static cable-releasing control method of the fan can be realized when the computer program is executed by the at least one processor.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the above-described division of modules is merely a logical function division, and there may be other manners of division in actual implementation, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or modules, which may be in electrical, mechanical, or other forms.
The modules described above as separate components may or may not be physically separate, and components shown as modules may or may not be physical units, may be located in one place, or may be distributed over multiple network units. Some or all of the modules may be selected according to actual needs to implement the solution of this embodiment.
In addition, each functional module in the embodiments of the present application may be integrated in one processing unit, or each module may exist alone physically, or two or more modules may be integrated in one unit. The units formed by the modules can be realized in a form of hardware or a form of hardware and software functional units.
The integrated modules, which are implemented in the form of software functional modules, may be stored in a computer readable storage medium. The software functional module is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to perform some of the steps of the methods described above for the various embodiments of the application.
It should be appreciated that the Processor may be a central processing unit (Central Processing Unit, abbreviated as CPU), or may be other general purpose Processor, digital signal Processor (DIGITAL SIGNAL Processor, abbreviated as DSP), application SPECIFIC INTEGRATED Circuit (ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present invention may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
The memory may comprise a high-speed RAM memory, and may further comprise a non-volatile memory NVM, such as at least one magnetic disk memory, and may also be a U-disk, a removable hard disk, a read-only memory, a magnetic disk or optical disk, etc.
The bus may be an industry standard architecture (Industry Standard Architecture, ISA) bus, an external device interconnect (PERIPHERAL COMPONENT INTERCONNECT, PCI) bus, or an extended industry standard architecture (Extended Industry Standard Architecture, EISA) bus, among others. The buses may be divided into address buses, data buses, control buses, etc. For ease of illustration, the buses in the drawings of the present application are not limited to only one bus or to one type of bus.
The storage medium may be implemented by any type or combination of volatile or nonvolatile memory devices 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 or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an Application SPECIFIC INTEGRATED Circuits (ASIC). It is also possible that the processor and the storage medium reside as discrete components in an electronic device or a master device.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application.
Claims (11)
1. The static cable-releasing control method for the fan is characterized by being applied to a controller and comprising the following steps of:
when the fan is detected to be in a standby state, acquiring a cable twisting angle of the fan;
If the cable twisting angle is larger than the static cable untwisting angle threshold value, determining an absolute value of an average change rate of wind speed in a preset prediction time period, determining an average value of wind speed in the preset prediction time period, and determining a wind direction consistency value in the preset prediction time period;
Acquiring a yaw total angle of the fan;
determining an absolute value threshold value of the average change rate of the wind speed within the preset prediction time according to the yaw total angle;
determining a wind speed average value threshold value in the preset prediction time according to the yaw total angle;
determining a wind direction consistency value threshold value in the preset prediction time according to the yaw total angle;
and if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the consistency value of the wind direction is larger than the consistency value threshold of the wind direction, controlling the fan to perform static cable releasing.
2. The method according to claim 1, wherein the calculation formula for determining the absolute value of the average change rate of the wind speed in the preset prediction period is:
，
In the method, in the process of the invention, Representing the absolute value of the average rate of change of wind speed,Representing the absolute value of the variation of the wind speed in the preset prediction time period,Representing the preset predicted time period.
3. The method according to claim 1, wherein the calculation formula for determining the average value of the wind speed in the preset predicted period is:
，
In the method, in the process of the invention, And (3) representing the average value of the wind speeds, recording the wind speeds at a plurality of moments in the preset prediction time period, wherein v (i) represents the wind speed at the ith moment, and n represents the number of the moments.
4. The method according to claim 1, wherein the calculation formula for determining the wind direction consistency value in the preset prediction period is:
，
In the method, in the process of the invention, Representing a wind direction standard deviation, and determining the wind direction standard deviation as the wind direction consistency value; θ represents an average value of wind directions in the preset prediction period, θ j represents a wind direction value at a j-th time in the preset prediction period, and n represents the number of the wind direction values recorded in the preset prediction period.
5. The method according to claim 1, wherein the calculation formula for determining the absolute value threshold of the average change rate of the wind speed within the preset prediction time according to the yaw total angle is:
，
，
In the method, in the process of the invention, Representing the average rate of change of wind speed absolute value threshold,Represents an absolute value threshold value of the average change rate of the initial wind speed,An adjustment parameter representing an absolute value of said average rate of change of wind speed,Representing the coefficient of the adjustment parameter,Representing the total angle of yaw as described above,Representing the static untwisting angle threshold.
6. The method according to claim 1, wherein the calculation formula for determining the average wind speed threshold value in the preset prediction time according to the yaw total angle is:
，
，
In the method, in the process of the invention, Represents the average value threshold value of the wind speed,Represents an average value threshold value of the initial wind speed,An adjustment parameter representing the average value of the wind speed,Representing the coefficient of the adjustment parameter,Representing the total angle of yaw as described above,Representing the static untwisting angle threshold.
7. The method according to any one of claims 1-6, wherein the calculation formula for determining the wind direction consistency value threshold value in the preset prediction time according to the yaw total angle is:
，
，
In the method, in the process of the invention, Represents the wind direction consistency value threshold value,Represents an initial wind direction consistency value threshold value,An adjustment parameter representing the wind direction consistency value,Representing the coefficient of the adjustment parameter,Representing the total angle of yaw as described above,Representing the static untwisting angle threshold.
8. A static untwisting control device of a fan, which is applied to a controller and comprises:
The first acquisition module is used for acquiring the torsion cable angle of the fan when the fan is detected to be in a standby state;
The first determining module is used for determining an absolute value of an average change rate of wind speed in a preset prediction time period if the cable twisting angle is larger than a static cable untwisting angle threshold value, determining an average wind speed in the preset prediction time period and determining a wind direction consistency value in the preset prediction time period;
The second acquisition module is used for acquiring the yaw total angle of the fan;
The second determining module is used for determining an absolute value threshold value of the average change rate of the wind speed within the preset prediction time according to the yaw total angle;
the third determining module is used for determining a wind speed average value threshold value in the preset prediction time according to the yaw total angle;
a fourth determining module, configured to determine a wind direction consistency value threshold in the preset prediction time according to the yaw total angle;
And the judging module is used for controlling the fan to perform static cable-untwisting if the absolute value of the average change rate of the wind speed is smaller than the absolute value threshold of the average change rate of the wind speed, the average value of the wind speed is larger than the average value threshold of the wind speed, and the wind direction consistency value is larger than the wind direction consistency value threshold.
9. A controller for a vehicle, which is configured to control a controller, characterized by comprising the following steps: at least one processor and memory;
the memory stores computer-executable instructions;
the at least one processor executing computer-executable instructions stored in the memory, causing the at least one processor to perform the method of controlling static untwisting of a wind turbine as set forth in any of claims 1-7.
10. A computer storage medium, wherein computer-executable instructions are stored in the computer storage medium, and when the processor executes the computer-executable instructions, a method for controlling static untwisting of a fan according to any one of claims 1-7 is implemented.
11. A computer program product comprising a computer program which, when executed by a processor, implements a method of controlling static untwisting of a wind turbine as claimed in any one of claims 1-7.
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| CN108533452B (en) * | 2018-04-09 | 2020-06-26 | 北京金风慧能技术有限公司 | Untwisting control method and untwisting control device of wind generating set |
| CN116641839A (en) * | 2023-05-06 | 2023-08-25 | 华能新疆能源开发有限公司新能源东疆分公司 | Wind power generator is to wind system in advance |
| CN117828494A (en) * | 2023-12-27 | 2024-04-05 | 中节能风力发电股份有限公司 | Fan cable-releasing defect mode identification method, device and medium |
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