CN112761868A - Wind condition identification method and device, controller and wind generating set - Google Patents
Wind condition identification method and device, controller and wind generating set 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
- F05B2270/32—Wind speeds
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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
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Abstract
The embodiment of the invention discloses a wind condition identification method, a wind condition identification device, a controller and a wind generating set. The method comprises the following steps: acquiring an actual wind speed at a preset moment; drawing a standard extreme working gust curve of the target wind generating set in a preset period by taking the actual wind speed at a preset moment as a starting point; determining the peak value and the valley value of a standard extreme working gust curve; determining the standard wind speed variation amplitude of a standard extreme working gust curve according to the peak value and the valley value; respectively acquiring actual wind speeds at moments corresponding to the peak value and the valley value; determining the actual wind speed variation amplitude according to the actual wind speed at the moment corresponding to the peak value and the valley value; and identifying whether the wind condition in the preset period is a gust wind condition exceeding the standard or not according to the standard wind speed variation amplitude and the actual wind speed variation amplitude. The wind condition identification method, the wind condition identification device, the controller and the wind generating set can identify whether the wind condition in the preset period is a gust wind condition exceeding the standard or not.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a wind condition identification method, a wind condition identification device, a controller and a wind generating set.
Background
In the design standard of the wind generating set, specific definitions are given for different wind conditions, and are used for control design and load calculation, and the design of the wind generating set is also carried out according to the definitions in the standard. However, in an actual operating environment, the actual wind conditions may not fully meet the conditions defined in the design standards. Therefore, how to identify wind conditions that do not meet design criteria is an urgent problem to be solved.
Disclosure of Invention
The embodiment of the invention provides a wind condition identification method, a wind condition identification device, a controller and a wind generating set, which can identify whether the current wind condition is a gust wind condition exceeding a standard.
In a first aspect, an embodiment of the present invention provides a method for identifying a wind condition, including:
acquiring an actual wind speed at a preset moment;
drawing a standard Extreme Operating Gust (EOG) curve of the target wind generating set in a preset period by taking the actual wind speed at a preset moment as a starting point;
determining the peak value and the valley value of a standard extreme working gust curve; the peak value and the valley value of the standard extreme working gust curve respectively represent standard wind speeds at different moments in the future relative to the starting point;
determining the standard wind speed variation amplitude of a standard extreme working gust curve according to the peak value and the valley value;
respectively acquiring actual wind speeds at moments corresponding to the peak value and the valley value;
determining the actual wind speed variation amplitude according to the actual wind speed at the moment corresponding to the peak value and the valley value;
and identifying whether the wind condition in the preset period is a gust wind condition exceeding the standard or not according to the standard wind speed variation amplitude and the actual wind speed variation amplitude.
In one embodiment of the invention, determining the standard wind speed variation amplitude of the standard extreme operating gust curve from the peak and the valley comprises:
calculating the difference value of the standard wind speed at the moment corresponding to the peak value and the standard wind speed at the moment corresponding to the valley value;
the difference is determined as a first standard wind speed variation amplitude.
In an embodiment of the present invention, determining the actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak value and the valley value includes:
calculating the difference value of the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value;
the difference is determined as a first actual wind speed variation amplitude.
In one embodiment of the present invention, identifying whether the wind condition within the predetermined period is a gust wind condition exceeding a standard according to the standard wind speed variation amplitude and the actual wind speed variation amplitude comprises:
and if the first standard wind speed variation amplitude is smaller than the first actual wind speed variation amplitude, determining the wind condition in the preset period as an over-standard fast-rising gust wind condition.
In one embodiment of the present invention, identifying whether the wind condition within the predetermined period is a gust wind condition exceeding a standard according to the standard wind speed variation amplitude and the actual wind speed variation amplitude comprises:
and if the difference value of the wind speed change amplitude of the first actual wind speed change amplitude and the first standard wind speed change amplitude is larger than a first amplitude threshold value, determining the wind condition in the preset period as the over-standard fast-rising gust wind condition.
In an embodiment of the present invention, determining the actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak value and the valley value further includes:
calculating the difference value of the actual wind speed at the preset moment and the standard wind speed at the moment corresponding to the valley value;
the difference is determined as a second standard wind speed variation amplitude.
In an embodiment of the present invention, determining the actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak and the actual wind speed at the time corresponding to the valley, further includes:
calculating the difference value of the actual wind speed at the preset moment and the actual wind speed at the moment corresponding to the valley value;
the difference is determined as a second actual wind speed variation amplitude.
In an embodiment of the present invention, identifying whether the wind condition within the predetermined period is a gust wind condition exceeding the standard according to the standard wind speed variation amplitude and the actual wind speed variation amplitude further includes:
and if the second standard wind speed variation amplitude is smaller than the second actual wind speed variation amplitude, determining the wind condition in the preset period as the over-standard extreme working gust wind condition.
In an embodiment of the present invention, identifying whether the wind condition within the predetermined period is a gust wind condition exceeding the standard according to the standard wind speed variation amplitude and the actual wind speed variation amplitude further includes:
and if the difference value of the wind speed change amplitude of the second actual wind speed change amplitude and the second standard wind speed change amplitude is larger than a second amplitude threshold value, determining that the wind condition in the preset period is an over-standard extreme working gust wind condition.
In an embodiment of the present invention, the method for identifying a wind condition provided by the embodiment of the present invention may further include:
determining whether the generator rotating speed of the target wind generating set exceeds a generator rotating speed design value;
and if the rotating speed of the generator exceeds the designed rotating speed of the generator, controlling the target wind generating set to stop.
In a second aspect, an embodiment of the present invention provides a wind condition identification apparatus, including:
the first acquisition module is used for acquiring the actual wind speed at a preset moment;
the drawing module is used for drawing a standard extreme working gust curve of the target wind generating set in a preset period by taking the actual wind speed at a preset moment as a starting point;
the first determining module is used for determining the peak value and the valley value of the standard extreme working gust curve; the peak value and the valley value of the standard extreme working gust curve respectively represent standard wind speeds at different moments in the future relative to the starting point;
the second determining module is used for determining the standard wind speed variation amplitude of the standard extreme working gust curve according to the peak value and the valley value;
the second acquisition module is used for respectively acquiring the actual wind speeds at the moments corresponding to the peak value and the valley value;
the third determining module is used for determining the actual wind speed change amplitude according to the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value;
and the identification module is used for identifying whether the wind condition in the preset period is a gust wind condition exceeding the standard or not according to the standard wind speed variation amplitude and the actual wind speed variation amplitude.
In an embodiment of the present invention, the second determining module may be specifically configured to:
calculating the difference value of the standard wind speed at the moment corresponding to the peak value and the standard wind speed at the moment corresponding to the valley value;
the difference is determined as a first standard wind speed variation amplitude.
In an embodiment of the present invention, the third determining module may be specifically configured to:
calculating the difference value of the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value;
the difference is determined as a first actual wind speed variation amplitude.
In an embodiment of the present invention, the identification module may be specifically configured to:
and if the first standard wind speed variation amplitude is smaller than the first actual wind speed variation amplitude, determining the wind condition in the preset period as an over-standard fast-rising gust wind condition.
In an embodiment of the present invention, the identification module may be specifically configured to:
and if the difference value of the wind speed change amplitude of the first actual wind speed change amplitude and the first standard wind speed change amplitude is larger than a first amplitude threshold value, determining the wind condition in the preset period as the over-standard fast-rising gust wind condition.
In an embodiment of the present invention, the second determining module may be further configured to:
calculating the difference value of the actual wind speed at the preset moment and the standard wind speed at the moment corresponding to the valley value;
the difference is determined as a second standard wind speed variation amplitude.
In an embodiment of the present invention, the third determining module may be further configured to:
calculating the difference value of the actual wind speed at the preset moment and the actual wind speed at the moment corresponding to the valley value;
the difference is determined as a second actual wind speed variation amplitude.
In an embodiment of the present invention, the identification module may be further configured to:
and if the second standard wind speed variation amplitude is smaller than the second actual wind speed variation amplitude, determining the wind condition in the preset period as the over-standard extreme working gust wind condition.
In an embodiment of the present invention, the identification module may be further configured to:
and if the difference value of the wind speed change amplitude of the second actual wind speed change amplitude and the second standard wind speed change amplitude is larger than a second amplitude threshold value, determining that the wind condition in the preset period is an over-standard extreme working gust wind condition.
In an embodiment of the present invention, the wind condition identification apparatus provided in the embodiment of the present invention may further include:
the fourth determining module is used for determining whether the generator rotating speed of the target wind generating set exceeds a generator rotating speed design value;
and the control module is used for controlling the target wind generating set to stop if the rotating speed of the generator exceeds the designed rotating speed value of the generator.
In a third aspect, an embodiment of the present invention provides a wind condition identification device, including: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the method of wind condition identification as provided by the first aspect of the embodiments of the present invention.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the wind condition identification method provided in the first aspect of the embodiment of the present invention.
In a fifth aspect, an embodiment of the present invention provides a controller for a wind turbine generator system, including: the second aspect of the embodiments of the present invention provides a wind condition identification apparatus.
In a sixth aspect, an embodiment of the present invention provides a wind turbine generator system, including: the fifth aspect of the embodiment of the present invention provides a controller.
The wind condition identification method, the device, the equipment, the medium, the controller and the wind generating set can identify whether the wind condition in the preset period is a gust wind condition exceeding the standard or not. When the wind condition in the preset period is identified to be a gust wind condition exceeding the standard, the wind generating set can be controlled to carry out event shutdown instead of fault shutdown, and the fault rate of the wind generating set is reduced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a wind condition identification method provided by an embodiment of the invention;
FIG. 2 shows a schematic diagram of a standard extreme operating gust curve provided by an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a wind condition identification device provided by an embodiment of the invention;
fig. 4 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing a wind condition identification method and apparatus according to an embodiment of the present invention.
Detailed Description
Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
In order to solve the problem of the prior art, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for identifying a wind condition. First, a method for identifying wind conditions according to an embodiment of the present invention will be described.
Fig. 1 shows a flow chart of a wind condition identification method provided by an embodiment of the present invention. The wind condition identification method may include:
s101: and acquiring the actual wind speed at a preset moment.
S102: and drawing a standard extreme working gust curve of the target wind generating set in a preset period by taking the actual wind speed at a preset moment as a starting point.
S103: the peak and valley values of the standard extreme operating gust curve are determined.
Wherein the peak and the valley of the standard extreme operating gust curve respectively represent the standard wind speed at different moments in the future relative to the starting point.
S104: and determining the standard wind speed variation amplitude of the standard extreme working gust curve according to the peak value and the valley value.
S105: and respectively acquiring actual wind speeds at the moments corresponding to the peak value and the valley value.
S106: and determining the actual wind speed variation amplitude according to the actual wind speed at the moment corresponding to the peak value and the valley value.
S107: and identifying whether the wind condition in the preset period is a gust wind condition exceeding the standard or not according to the standard wind speed variation amplitude and the actual wind speed variation amplitude.
It is understood that the predetermined time in the embodiment of the present invention may be the actual wind speed at any time in the past predetermined time period, or may be the actual wind speed at the current time. The standard extreme working gust curve drawn based on the actual wind speed at the predetermined moment represents the standard wind speed variation trend in a predetermined period (usually about 5-10s, which can be determined according to actual requirements) in the future from the moment corresponding to the actual wind speed.
In one embodiment of the present invention, the standard wind speed may be calculated by the following formula (1), formula (2), and formula (3).
V (z, t) is a standard wind speed of the wind generating set at the t second of the sampling moment at the hub height z; v (z) is the wind speed of the wind generating set at the t second of the sampling moment at the hub height z; vgustThe gust amplitude value is the wind gust amplitude value at the hub height z of the wind generating set; ve1The expected value of the wind speed is 1 year-one meeting maximum wind speed; vhubWhen no gust occurs, the stable wind speed at the hub height of the wind generating set is achieved; sigma1The standard deviation of turbulence at the height z of the hub of the wind generating set is shown; d is the diameter of the impeller of the wind generating set; a. the1Is the turbulence integral scale (also called turbulence size parameter); t is a predetermined period.
Based on the formula, the standard wind speeds at all sampling moments T in the preset period T can be calculated according to the actual wind speeds obtained at the preset moments, and therefore a standard extreme working gust curve can be drawn according to all the standard wind speeds. The sampling time t corresponds to different sampling frequencies, and the higher the sampling frequency is, the shorter the interval between the sampling times t is, and the more sampling samples are. As an example, in the embodiment of the present invention, the sampling is performed every 0.1 s.
In an embodiment of the invention, the wind speed at the predetermined time t is the wind speed v (z) at the calculated hub height z of the wind turbine generator set at the t second, which may be the actual wind speed at the t second or the average wind speed at the t second. Preferably, to make the plotted standard extreme operating gust curve smoother, the average wind speed may be taken as the wind speed at the tth second. By way of example, a sliding window method can be adopted to calculate the average wind speed within a preset time period, the average wind speed within the preset time period is taken as the wind speed V (z) of the wind generating set at the t second of the hub height z, and then the standard gust is calculated based on V (z). For example, sampling is carried out once every 0.1 second, the preset time is 1 second, and then the average value of 11 sampled wind speeds from the t-0.5 second to the t +0.5 second is calculated and is taken as the wind speed V (z) of the wind generating set at the t second of the hub height z.
Figure 2 shows a schematic diagram of a standard extreme operating gust curve provided by an embodiment of the present invention.
As shown in fig. 2, the predetermined period is 10.5s, and the curve from the 0s th time to the 10.5s th time is a standard extreme operating gust curve of the predetermined period. The 0s moment is a preset moment for acquiring the actual wind speed, and the acquired actual wind speed is 25m/s and is the starting point of the curve. The peak of the curve at time 5.25s corresponds to a standard wind speed of about 38 m/s. The 2.3s moment is the valley of the curve, corresponding to a standard wind speed of about 21 m/s. The peak and the valley represent the standard wind speed at different time instants in the future with respect to the starting point, respectively. That is, from time 0, a standard extreme operating gust profile for a predetermined period in the future may be calculated.
In one embodiment of the invention, real-time wind speed is collected at a certain sampling frequency, so that a standard extreme working gust curve at each sampling moment is calculated in real time. For example, real-time wind speed is acquired every 0.1s and a standard extreme operating gust profile is calculated for a corresponding predetermined period. Therefore, the standard wind speed variation amplitude of the standard extreme working gust curve can be determined according to the peak value and the valley value at the end time of the preset period, the actual wind speed variation amplitude is determined according to the actual wind speed at the corresponding time of the peak value and the valley value, and whether the actual wind speed in the preset period conforms to the standard working gust curve or not from the sampling real-time wind speed time is judged by comparing the standard wind speed variation amplitude with the actual wind speed variation amplitude. It will be appreciated that at each sampling instant after a predetermined period corresponding to the first real-time wind speed acquired, it can be determined whether the wind conditions in different predetermined periods exceed the standard gust wind conditions based on the standard extreme operating gust curves in a plurality of predetermined periods plotted against the previously continuously acquired real-time wind speeds.
The wind condition identification method provided by the embodiment of the invention can quickly identify the over-standard gust wind condition and is beneficial to timely adopting a corresponding control means, thereby avoiding the overlarge limit load of the wind generating set caused by the extreme wind condition.
In one embodiment of the invention, the difference between the standard wind speed at the moment corresponding to the peak value and the standard wind speed at the moment corresponding to the valley value can be calculated; the difference is determined as a first standard wind speed variation amplitude. Calculating the difference value of the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value; the difference is determined as a first actual wind speed variation amplitude. And if the first standard wind speed variation amplitude is smaller than the first actual wind speed variation amplitude, determining the wind condition in the preset period as an over-standard fast-rising gust wind condition.
In one embodiment of the invention, different amplitude thresholds are set based on the configuration of the wind generating set, taking into account the different capabilities of the wind generating set to traverse gusts. Specifically, a first amplitude threshold value is set, a wind speed change amplitude difference value of a first actual wind speed change amplitude and a first standard wind speed change amplitude is compared with the first amplitude threshold value, and when the wind speed change amplitude difference value of the first actual wind speed change amplitude and the first standard wind speed change amplitude is larger than the first amplitude threshold value, the wind condition in a preset period is determined to be an over-standard fast-rising gust wind condition.
In an embodiment of the present invention, a difference between the standard wind speed at the predetermined time and the standard wind speed at the time corresponding to the valley value may be further calculated, and the difference may be determined as the second standard wind speed variation width. Calculating the difference value of the actual wind speed at the preset moment and the actual wind speed at the moment corresponding to the valley value; the difference is determined as a second actual wind speed variation amplitude.
And if the first standard wind speed variation amplitude is smaller than the first actual wind speed variation amplitude and the second standard wind speed variation amplitude is smaller than the second actual wind speed variation amplitude, determining the wind condition in the preset period as an over-standard extreme working gust wind condition. Or if the difference value of the wind speed change amplitude of the first actual wind speed change amplitude and the first standard wind speed change amplitude is larger than a first amplitude threshold value, and the second standard wind speed change amplitude is smaller than a second actual wind speed change amplitude, determining the wind condition in the preset period as an over-standard extreme working gust wind condition.
In an embodiment of the invention, a second amplitude threshold value may be further set, and the wind speed variation amplitude difference value of the second actual wind speed variation amplitude and the second standard wind speed variation amplitude is compared with the second amplitude threshold value.
And if the first standard wind speed change amplitude is smaller than the first actual wind speed change amplitude, and the difference value of the second actual wind speed change amplitude and the wind speed change amplitude of the second standard wind speed change amplitude is larger than a second amplitude threshold value, determining that the wind condition in the preset period is an over-standard extreme working gust wind condition. Or, if the difference value of the wind speed variation amplitude of the first actual wind speed variation amplitude and the first standard wind speed variation amplitude is larger than a first amplitude threshold value, and the difference value of the wind speed variation amplitude of the second actual wind speed variation amplitude and the second standard wind speed variation amplitude is larger than a second amplitude threshold value, determining the wind condition in the preset period as an over-standard extreme working gust wind condition.
In an embodiment of the present invention, the first amplitude threshold and the second amplitude threshold may be the same value, or may be determined according to the actual wind conditions of each machine location.
Therefore, the standard of the customized wind generating set for identifying the over-standard gust wind condition can be realized, different configurations and wind conditions of the wind generating set of each machine site are fully considered, the rationality and the accuracy of gust identification are improved, and the control effect of the control strategy of the wind generating set is maximized.
The wind condition identification method provided by the embodiment of the invention can quickly and comprehensively identify different over-standard gust wind conditions, has a short identification period and various identifiable gust forms, so that the wind generating set can adopt corresponding control means in time, and the overlarge limit load of the wind generating set caused by extreme wind conditions is avoided.
In one embodiment of the invention, whether the generator speed of the target wind generating set exceeds a generator speed design value or not can be further determined; and if the rotating speed of the generator exceeds the designed rotating speed of the generator, controlling the target wind generating set to stop.
In one embodiment of the invention, it may be determined whether the generator speed of the target wind turbine generator set exceeds the generator speed design value within a preset time period (for example, 2 seconds); and if the rotating speed of the generator exceeds the designed rotating speed of the generator, controlling the target wind generating set to stop.
The wind condition identification method provided by the embodiment of the invention can control the wind generating set to stop when the rotating speed value of the generator of the wind generating set exceeds the designed rotating speed value of the generator, thereby ensuring the safety of the wind generating set.
In one embodiment of the invention, the target wind park may be controlled to perform an event shutdown, rather than a fault shutdown. Wherein, the event shutdown refers to shutdown due to an operating environment.
The wind condition identification method provided by the embodiment of the invention can control the wind generating set to perform event shutdown instead of fault shutdown, and reduces the fault rate of the wind generating set.
Corresponding to the above method embodiment, the embodiment of the present invention further provides a wind condition identification apparatus. As shown in fig. 3, fig. 3 is a schematic structural diagram of a wind condition identification device provided in an embodiment of the present invention. The wind condition identification means may include:
a first obtaining module 301, configured to obtain an actual wind speed at a predetermined time;
the drawing module 302 is used for drawing a standard extreme working gust curve of the target wind generating set in a preset period by taking the actual wind speed at a preset moment as a starting point;
a first determining module 303, configured to determine a peak value and a valley value of a standard extreme operating gust curve; the peak value and the valley value of the standard extreme working gust curve respectively represent standard wind speeds at different moments in the future relative to the starting point;
a second determining module 304, configured to determine a standard wind speed variation amplitude of the standard extreme working gust curve according to the peak value and the valley value;
a second obtaining module 305, configured to obtain actual wind speeds at times corresponding to a peak value and a valley value, respectively;
the third determining module 306 is configured to determine an actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak value and the actual wind speed at the time corresponding to the valley value;
and the identifying module 307 is configured to identify whether the wind condition in the predetermined period is a gust wind condition that exceeds the standard according to the standard wind speed variation amplitude and the actual wind speed variation amplitude.
In an embodiment of the present invention, the second determining module 304 may be specifically configured to:
calculating the difference value of the standard wind speed at the moment corresponding to the peak value and the standard wind speed at the moment corresponding to the valley value;
the difference is determined as a first standard wind speed variation amplitude.
In an embodiment of the present invention, the third determining module 306 may be specifically configured to:
calculating the difference value of the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value;
the difference is determined as a first actual wind speed variation amplitude.
In an embodiment of the present invention, the identifying module 307 may specifically be configured to:
and if the first standard wind speed variation amplitude is smaller than the first actual wind speed variation amplitude, determining the wind condition in the preset period as an over-standard fast-rising gust wind condition.
In an embodiment of the present invention, the identifying module 307 may specifically be configured to:
and if the difference value of the wind speed change amplitude of the first actual wind speed change amplitude and the first standard wind speed change amplitude is larger than a first amplitude threshold value, determining the wind condition in the preset period as the over-standard fast-rising gust wind condition.
In an embodiment of the present invention, the second determining module 304 may further be configured to:
calculating the difference value of the actual wind speed at the preset moment and the standard wind speed at the moment corresponding to the valley value;
the difference is determined as a second standard wind speed variation amplitude.
In an embodiment of the present invention, the third determining module 306 may be further configured to:
calculating the difference value of the actual wind speed at the preset moment and the actual wind speed at the moment corresponding to the valley value;
the difference is determined as a second actual wind speed variation amplitude.
In an embodiment of the present invention, the identifying module 307 may further be configured to:
and if the second standard wind speed variation amplitude is smaller than the second actual wind speed variation amplitude, determining the wind condition in the preset period as the over-standard extreme working gust wind condition.
In an embodiment of the present invention, the identifying module 307 may further be configured to:
and if the difference value of the wind speed change amplitude of the second actual wind speed change amplitude and the second standard wind speed change amplitude is larger than a second amplitude threshold value, determining that the wind condition in the preset period is an over-standard extreme working gust wind condition.
In an embodiment of the present invention, the wind condition identification apparatus provided in the embodiment of the present invention may further include:
the fourth determining module is used for determining whether the generator rotating speed of the target wind generating set exceeds a generator rotating speed design value;
and the control module is used for controlling the target wind generating set to stop if the rotating speed of the generator exceeds the designed rotating speed value of the generator.
Fig. 4 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing a wind condition identification method and apparatus according to an embodiment of the present invention. As shown in fig. 4, computing device 400 includes an input device 401, an input interface 402, a central processor 403, a memory 404, an output interface 405, and an output device 406. The input interface 402, the central processing unit 403, the memory 404, and the output interface 405 are connected to each other through a bus 410, and the input device 401 and the output device 406 are connected to the bus 410 through the input interface 402 and the output interface 405, respectively, and further connected to other components of the computing device 400.
Specifically, the input device 401 receives input information from the outside and transmits the input information to the central processor 403 through the input interface 402; the central processor 403 processes the input information based on computer-executable instructions stored in the memory 404 to generate output information, stores the output information temporarily or permanently in the memory 404, and then transmits the output information to the output device 406 through the output interface 405; output device 406 outputs the output information outside of computing device 400 for use by a user.
That is, the computing device shown in fig. 4 may also be implemented as a wind condition identification device, which may include: a memory storing computer-executable instructions; and a processor, which when executing computer-executable instructions, can implement the wind condition identification method and apparatus provided by the embodiments of the present invention.
An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium has computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement the wind condition identification method provided by embodiments of the present invention.
An embodiment of the present invention further provides a controller for a wind turbine generator system, where the controller may include: the embodiment of the invention provides a wind condition identification device.
An embodiment of the present invention further provides a wind turbine generator system, which may include: the embodiment of the invention provides a controller.
It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.
The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.
It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.
As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.
Claims (15)
1. A method for identifying wind conditions, the method comprising:
acquiring an actual wind speed at a preset moment;
drawing a standard extreme working gust curve of the target wind generating set in a preset period by taking the actual wind speed at the preset moment as a starting point;
determining the peak value and the valley value of the standard extreme working gust curve; wherein the peak and valley of the standard extreme operating gust curve respectively represent standard wind speeds at different times in the future relative to the starting point;
determining the standard wind speed variation amplitude of the standard extreme working gust curve according to the peak value and the valley value;
respectively acquiring actual wind speeds at the moments corresponding to the peak value and the valley value;
determining the actual wind speed variation amplitude according to the actual wind speed at the moment corresponding to the peak value and the valley value;
and identifying whether the wind condition in the preset period is a gust wind condition exceeding a standard or not according to the standard wind speed variation amplitude and the actual wind speed variation amplitude.
2. The method of claim 1, wherein said determining a standard wind speed variation amplitude for said standard extreme operating gust profile from said peak and said valley comprises:
calculating the difference value of the standard wind speed at the moment corresponding to the peak value and the standard wind speed at the moment corresponding to the valley value;
determining the difference as a first standard wind speed variation amplitude.
3. The method of claim 2, wherein determining the actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak value and the valley value comprises:
calculating the difference value of the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value;
determining the difference as a first actual wind speed variation amplitude.
4. The method of claim 3, wherein identifying whether the wind condition within the predetermined period is a gust wind condition that exceeds a criterion based on the criterion wind speed variation amplitude and the actual wind speed variation amplitude comprises:
and if the first standard wind speed variation amplitude is smaller than the first actual wind speed variation amplitude, determining that the wind condition in the preset period is an over-standard fast-rising gust wind condition.
5. The method of claim 3, wherein identifying whether the wind condition within the predetermined period is a gust wind condition that exceeds a criterion based on the criterion wind speed variation amplitude and the actual wind speed variation amplitude comprises:
and if the difference value of the wind speed variation amplitude of the first actual wind speed variation amplitude and the first standard wind speed variation amplitude is larger than a first amplitude threshold value, determining that the wind condition in a preset period is an over-standard fast-rising gust wind condition.
6. The method according to claim 4 or 5, wherein the determining an actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak value and the valley value further comprises:
calculating the difference value between the standard wind speed at the preset moment and the standard wind speed at the moment corresponding to the valley value;
and determining the difference value as a second standard wind speed change amplitude.
7. The method of claim 6, wherein determining the actual wind speed variation amplitude according to the actual wind speed at the time corresponding to the peak and the actual wind speed at the time corresponding to the valley further comprises:
calculating the difference value of the actual wind speed at the preset moment and the actual wind speed at the moment corresponding to the valley value;
and determining the difference value as a second actual wind speed change amplitude.
8. The method of claim 7, wherein identifying whether the wind condition within the predetermined period is a gust wind condition that exceeds a criterion based on the criterion wind speed variation amplitude and the actual wind speed variation amplitude, further comprises:
and if the second standard wind speed variation amplitude is smaller than the second actual wind speed variation amplitude, determining the wind condition in the preset period as an over-standard extreme working gust wind condition.
9. The method of claim 7, wherein identifying whether the wind condition within the predetermined period is a gust wind condition that exceeds a criterion based on the criterion wind speed variation amplitude and the actual wind speed variation amplitude, further comprises:
and if the difference value of the wind speed variation amplitude of the second actual wind speed variation amplitude and the second standard wind speed variation amplitude is larger than a second amplitude threshold value, determining that the wind condition in the preset period is an over-standard extreme working gust wind condition.
10. The method of claim 9, further comprising:
determining whether the generator rotating speed of the target wind generating set exceeds a generator rotating speed design value;
and if the rotating speed of the generator exceeds the designed rotating speed of the generator, controlling the target wind generating set to stop.
11. A wind condition identification device, characterized in that the device comprises:
the first acquisition module is used for acquiring the actual wind speed at a preset moment;
the drawing module is used for drawing a standard extreme working gust curve of the target wind generating set in a preset period by taking the actual wind speed at the preset moment as a starting point;
the first determination module is used for determining the peak value and the valley value of the standard extreme working gust curve; wherein the peak and valley of the standard extreme operating gust curve respectively represent standard wind speeds at different times in the future relative to the starting point;
the second determining module is used for determining the standard wind speed variation amplitude of the standard extreme working gust curve according to the peak value and the valley value;
the second acquisition module is used for respectively acquiring the actual wind speeds at the moments corresponding to the peak value and the valley value;
the third determining module is used for determining the actual wind speed change amplitude according to the actual wind speed at the moment corresponding to the peak value and the actual wind speed at the moment corresponding to the valley value;
and the identification module is used for identifying whether the wind condition in the preset period is a gust wind condition exceeding the standard or not according to the standard wind speed variation amplitude and the actual wind speed variation amplitude.
12. A controller for a wind turbine generator system, the controller comprising: a wind condition identification device as claimed in claim 11.
13. A wind power plant, characterized in that it comprises: the controller of claim 12.
14. A wind condition identification device, characterized in that the device comprises: a processor, a memory and a computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing a wind condition identification method as claimed in any one of claims 1 to 10.
15. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, carries out the wind condition identification method according to any one of claims 1 to 10.
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| CN114987728A (en) * | 2022-05-26 | 2022-09-02 | 广东逸动科技有限公司 | Ship charging method, ship charging device, ship charging equipment and storage medium |
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