CN112855432A - Control method of wind generating set - Google Patents

Control method of wind generating set Download PDF

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Publication number
CN112855432A
CN112855432A CN202110024535.2A CN202110024535A CN112855432A CN 112855432 A CN112855432 A CN 112855432A CN 202110024535 A CN202110024535 A CN 202110024535A CN 112855432 A CN112855432 A CN 112855432A
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CN
China
Prior art keywords
rainfall
speed
hub
blade
generating set
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Pending
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CN202110024535.2A
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Chinese (zh)
Inventor
王国军
马龙
刘泽
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Shanghai Electric Wind Power Group Co Ltd
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Shanghai Electric Wind Power Group Co Ltd
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Priority to CN202110024535.2A priority Critical patent/CN112855432A/en
Publication of CN112855432A publication Critical patent/CN112855432A/en
Pending legal-status Critical Current

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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 
    • 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
    • F05B2260/00—Function
    • F05B2260/95—Preventing corrosion
    • 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
    • F05B2270/10—Purpose of the control system
    • F05B2270/101—Purpose of the control system to control rotational speed (n)
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/72—Wind turbines with rotation axis in wind direction

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Wind Motors (AREA)

Abstract

The invention provides a control method of a wind generating set, the wind generating set comprises a hub and blades connected to the outer side of the hub, and the method comprises the following steps: acquiring rainfall parameters of a position area where a wind generating set is located; and when the hub operates according to the rated rotating speed, if the rainfall parameter indicates that rainfall exists in the position area, the rotating speed of the hub is reduced. According to the method, the rainfall parameters of the area where the wind generating set is located are monitored, and when the area where the wind generating set is located is in rainfall, the rotating speed of the hub which operates according to the rated rotating speed is reduced, so that the impact strength of rainwater on the surface of the blade is reduced, the rain erosion degree of the front edge of the blade is greatly reduced, and the reliability of the blade is improved.

Description

Control method of wind generating set
Technical Field
The invention relates to the field of wind generating sets, in particular to a control method of a wind generating set.
Background
The blades are key core components of the wind generating set, and good design, reliable quality and superior performance of the blades are determining factors for ensuring stable operation of the wind generating set. With the trend of large-scale development of the wind generating set, the length of the blade is longer and longer, and under the condition that the rotating speed of a hub of the wind generating set is fixed and unchanged, the speed of the blade tip is increased along with the increase of the length of the blade. During the high-speed operation of the blade, erosion and abrasion of the blade by wind sand and rain drops easily cause the aerodynamic shape of the blade to change. Moreover, the erosion of the front edge of the blade (the side of the blade where air enters is called the front edge of the blade) is a common damage form of the blade, and is mainly concentrated in the tip area, because the tip area can generate higher linear velocity when the blade runs, and impact particles in the air, such as raindrops, hail, salt fog, sand and stones, field high-altitude organisms and the like, to cause damage to the surface of the blade. Among the environmental factors, erosion by rain is the primary cause of erosion of the leading edge of the blade, and this erosion or damage not only reduces the aerodynamic efficiency of the blade and loses power generation, but also compromises the service life of the blade. Currently, the protection of the leading edge of a blade is enhanced by performing an anti-corrosion treatment on the surface of the blade.
Although various raw material suppliers provide a plurality of blade protection materials, no material can ensure the protection of the front edge of the blade for at least 20 years, and as the rain erosion of the front edge of the blade becomes a focus of the development of a large-scale wind generating set, the current technology still has the limiting factors of insufficient application confidence, short quality guarantee period, high application cost and limitation on the increase of the blade tip speed, so that the wind generating set has high torque load of a transmission chain.
Disclosure of Invention
The invention provides a control method of a wind generating set.
Specifically, the invention is realized by the following technical scheme:
a first aspect of an embodiment of the present invention provides a control method for a wind turbine generator system, where the wind turbine generator system includes a hub and blades connected to an outer side of the hub, the method including:
acquiring rainfall parameters of a position area where a wind generating set is located;
and when the hub operates according to the rated rotating speed, if the rainfall parameter indicates that rainfall exists in the position area, the rotating speed of the hub is reduced.
Optionally, the rainfall parameter comprises at least one of rainfall, rainfall intensity, raindrop velocity and raindrop volume size.
Optionally, if the rainfall parameter indicates that there is rainfall in the location area, reducing the rotation speed of the hub includes:
if the rainfall parameters indicate that there is rainfall in the location area, reducing the rotational speed of the hub to reduce the speed of the particular location of the blade to less than or equal to a first speed threshold.
Optionally, after reducing the rotation speed of the hub to reduce the speed of the specific position of the blade to be less than or equal to a first speed threshold, determining whether the rainfall parameter indicates that the rainfall of the position area is less than or equal to a first parameter threshold, and if so, reducing the rotation speed of the hub to make the speed of the specific position be greater than a second speed threshold and less than or equal to the first speed threshold;
if not, reducing the rotation speed of the hub so that the speed of the specific position is smaller than or equal to the second speed threshold.
Optionally, the specific location is one of a root, a transition part and a tip of the blade, and the transition section is a part of the blade for connecting the root and the tip.
Optionally, the magnitude of the first speed threshold corresponding to each specific position is positively correlated to the distance from the specific position to the hub center.
Optionally, the specific position is provided with a speed sensor, and the reducing the rotation speed of the hub to reduce the speed of the specific position of the blade to be less than or equal to a first speed threshold value comprises:
acquiring a real-time speed of the specific position based on the speed sensor;
and reducing the rotation speed of the hub according to the real-time speed until the speed of the specific position of the blade is reduced to be less than or equal to a first speed threshold value.
Optionally, the wind generating set includes a rainfall monitoring unit, and the acquiring of rainfall parameters of the area where the wind generating set is located includes:
and acquiring rainfall parameters of the area where the wind generating set is located based on the rainfall monitoring unit.
Optionally, the wind generating set includes a plurality of wind generating sets, the rainfall monitoring unit is disposed on one of the wind generating sets, and the method further includes:
when the hub operates according to the rated rotating speed, if the rainfall parameters indicate that rainfall exists in the position area, the rotating speeds of the hubs of other wind generating sets are synchronously reduced.
Optionally, after reducing the rotation speed of the hub, the method further includes:
and if the rainfall parameters indicate that the position area is changed from a rainfall state to a no-rainfall state, increasing the rotating speed of the hub, so that the hub operates according to the rated rotating speed.
Optionally, the surface of the blade is provided with a protective layer.
A second aspect of an embodiment of the present invention provides a control method for a wind turbine generator system including a hub and blades connected to an outer side of the hub, the method including:
acquiring rainfall parameters of a position area where a wind generating set is located;
when the hub operates according to the rated rotating speed, if the rainfall parameter is larger than the parameter threshold value, the rotating speed of the hub is reduced.
Optionally, after reducing the rotation speed of the hub, the method further includes:
and if the rainfall parameter is less than or equal to the parameter threshold value, increasing the rotating speed of the hub so that the hub operates according to the rated rotating speed.
According to the technical scheme provided by the embodiment of the invention, the rotation speed of the hub which operates according to the rated rotation speed is reduced when the area where the wind generating set is located rains by monitoring the rainfall parameters of the area where the wind generating set is located, so that the impact strength of rainwater on the surface of the blade is reduced, the rain erosion degree of the front edge of the blade is greatly reduced, and the reliability of the blade is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a method flow diagram illustrating a method of controlling a wind turbine generator set in accordance with an exemplary embodiment of the present invention;
FIG. 2 is a method flow diagram illustrating a wind turbine generator system control method according to another exemplary embodiment of the present disclosure;
FIG. 3 is a method flow diagram illustrating a wind turbine generator system control method according to another exemplary embodiment of the present disclosure;
FIG. 4 is a method flow diagram illustrating a wind turbine generator system control method according to another exemplary embodiment of the present disclosure;
FIG. 5 is a method flow diagram illustrating a wind turbine generator system control method according to another exemplary embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a wind generating set control apparatus according to an exemplary embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present invention. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
It should be noted that, in the following examples and embodiments, features may be combined with each other without conflict.
The wind generating set provided by the embodiment of the invention can comprise a hub and blades connected to the outer side of the hub, wherein the hub rotates to drive the blades to rotate, and the linear velocity of the blades can be controlled by controlling the angular velocity of the hub. It will be appreciated that at the same time, the linear velocity at different positions of the blade is positively correlated to the distance from the position to the center of the hub, i.e. the linear velocity at positions on the blade that are further from the center of the hub is higher.
Next, a control method of a wind turbine generator system according to an embodiment of the present invention is specifically described.
Example one
FIG. 1 is a method flow diagram illustrating a method of controlling a wind turbine generator set in accordance with an exemplary embodiment of the present invention; the execution main body of the wind generating set control method of the embodiment of the invention can be a main processor of the wind generating set, also can be other processors of the wind generating set, or a processor independent of the wind generating set. Referring to fig. 1, a control method of a wind turbine generator system according to an embodiment of the present invention may include steps S101 to S102.
In S101, rainfall parameters of an area where the wind generating set is located are obtained.
The rainfall parameters may include at least one of rainfall, rainfall intensity, raindrop speed, and raindrop volume size, although the rainfall parameters may include others.
The rainfall parameters acquired in S101 may include one parameter type, or may include multiple parameter types. For example, in some embodiments, the rainfall parameter comprises a parameter type, e.g., the rainfall parameter is rainfall, which may be within a first preset time period, and the second preset time period may be 24 hours, 12 hours, or other time period; for another example, the rainfall parameter is rainfall intensity, which may refer to an instant striking force when the blade is struck by raindrops, or may refer to an average striking force when the blade is struck by raindrops within a second preset time period, where the second preset time period may be 1 minute, 2 minutes, 3 minutes, 4 minutes, and so on; as another example, the rainfall parameter is raindrop speed, which may be an average raindrop speed over a third predetermined duration, which may be half an hour, 1 hour, or other duration; for another example, the rainfall parameter is a raindrop volume size, which refers to a volume size of raindrop particles. In certain embodiments, the rainfall parameters include a plurality of parameter types, such as rainfall parameters including at least two of rainfall, raindrop speed, and raindrop volume size.
Rainfall parameters may be obtained in different ways, for example, in some embodiments, rainfall parameters may be input externally, such as by transmission from an external device or by human input. In some embodiments, the wind generating set comprises a rainfall monitoring unit, and rainfall parameters of an area where the wind generating set is located are obtained based on the rainfall monitoring unit.
In addition, it should be noted that, in the embodiment of the present invention, the area where the wind turbine generator is located may be an area with a preset distance from the wind turbine generator, or may be a specific area manually defined by other people.
In S102, when the hub is operating at the rated rotational speed, if the rainfall parameter indicates that there is rainfall in the location area, the rotational speed of the hub is reduced.
In the embodiment of the present invention, the rated rotation speed may be a speed range or a point value. When the hub operates according to the rated rotating speed, the wind generating set can be considered to be in the state of the optimal wind energy capturing capacity, and the generating efficiency of the wind generating set is optimal.
When the hub operates according to the rated rotating speed, the speed of the blade is also fixed, the speed of the blade is not limited, the limitation means that the speed of the blade cannot be adjusted due to some factors when the blade operates at the fixed speed, and therefore the wind generating set can be ensured to be in the state of the optimal wind energy capturing capacity.
It should be noted that, in the embodiment of the present invention, the speed of the blade may refer to the linear speed of the blade. In S102, decreasing the rotation speed of the hub means decreasing the rotation speed of the hub to a value smaller than the rated rotation speed.
In this embodiment, if the rainfall parameter is greater than 0, it is determined that rainfall exists in the area where the wind generating set is located, that is, the area where the wind generating set is located is in a rainy state; otherwise, the area where the wind generating set is located is determined to be in a rain-free state.
Optionally, if the rainfall parameter indicates that there is rainfall in the location area, the rotational speed of the hub is reduced to reduce the speed of the specific location of the blade to be less than or equal to the first speed threshold, and the impact strength of the rainwater on the surface of the blade is reduced by reducing the speed of the specific location to be less than or equal to the first speed threshold.
Illustratively, in the absence of rain, the rotational speed of the hub is the nominal rotational speed, and the speed at the specific location is the first speed value. It should be understood that in the embodiment of the present invention, the first speed threshold is smaller than the first speed value at the same specific position.
The specific location may be one of a root, a transition and a tip of the blade, wherein the transition is a portion of the blade connecting the root and the tip. The blade root is the end part area of one end of the blade close to the hub, the blade tip can refer to the end part area of one end of the blade far away from the hub, and can also refer to the point of the blade farthest away from the center of the hub. It should be understood that the specific location may also be a specific point on the blade.
It will be appreciated that after the blade configuration has been determined, the speed relationship between the different specific positions is also determined, with the same rotational speed of the hub. Wherein the speed V at the specific location is:
V＝r*w (1)；
in formula (1), w is the rotation speed of the hub, and r is the distance from the specific position to the center of the hub. In the embodiment of the present invention, when the specific position is one area, the distance from the specific position to the center of the hub is the distance from the center of the specific position to the center of the hub.
The setting of the size of the first speed threshold needs to consider the position relationship of the specific position relative to the hub center, for example, the specific position is the blade tip, the first speed threshold is 90m/s, and when the speed of the blade tip is less than or equal to 90m/s, the impact strength of rainwater on the blade is considered to be low, and the blade cannot be damaged greatly.
In the embodiment of the invention, the size of the first speed threshold corresponding to the specific position is positively correlated with the distance from the specific position to the hub center, illustratively, the distance from the blade root to the hub center is 10m, the distance from the center of the transition part to the hub center is 60m, the distance from the blade tip to the hub center is 100m, the first speed threshold corresponding to the blade root is 9m/s, the first speed threshold corresponding to the transition part is 15m/s, and the first speed threshold corresponding to the blade tip is 90 m/s. Further, referring to fig. 2, after the rotation speed of the hub is reduced to reduce the speed of the specific position of the blade to be less than or equal to the first speed threshold, it is determined whether the rainfall parameter indicates that the rainfall of the area where the wind turbine generator set is located is less than or equal to the first parameter threshold, and if so, the rotation speed of the hub is reduced to make the speed of the specific position be greater than the second speed threshold and less than or equal to the first speed threshold; if not, the rotation speed of the hub is reduced so that the speed of the specific position is smaller than or equal to the second speed threshold value.
It should be appreciated that in embodiments of the present invention, the second speed threshold is less than the first speed threshold for the same particular location.
For the rainfall less than or equal to the first parameter threshold, the rainfall is considered to be small, the impact strength of the rainwater on the blades is small, the speed of the specific position is reduced to be greater than the second speed threshold, and the speed is less than or equal to the first speed threshold, so that the impact strength of the rainwater on the blades can be ensured to be small, and the power generation efficiency of the wind generating set can be ensured to meet the requirement.
And when the rainfall is greater than the first parameter threshold, the rainfall is considered to be large, the impact strength of the rainwater on the blades is large, the speed of the specific position is reduced to be less than or equal to the second speed threshold, the impact strength of the rainwater on the blades is ensured to be small, and at the moment, the power generation efficiency of the wind generating set is not better than the power generation efficiency of the wind generating set when the rainfall is less than or equal to the first parameter threshold.
The second speed threshold is set by considering a position relationship of the specific position relative to the hub center, for example, the specific position is a blade tip, and the second speed threshold is 80 m/s.
In the embodiment of the present invention, the size of the second speed threshold corresponding to the specific position is positively correlated with the distance from the specific position to the hub center, for example, the distance from the blade root to the hub center is 10m, the distance from the center of the transition portion to the hub center is 60m, the distance from the blade tip to the hub center is 100m, the first speed threshold corresponding to the blade root is 8m/s, the first speed threshold corresponding to the transition portion is 13.33m/s, and the first speed threshold corresponding to the blade tip is 80 m/s.
The first parameter threshold may be set as required, taking the rainfall parameter as the rainfall within 24 hours as an example, the first parameter threshold is 9.9mm, wherein if the rainfall within 24 hours is greater than 0 and less than or equal to 9.9mm, the rotating speed of the hub is reduced, so that the speed of the blade tip is greater than 80m/s and less than or equal to 90 m/s; if the rainfall in 24 hours is greater than 9.9mm, the rotational speed of the hub is reduced so that the speed of the blade tip is less than or equal to 80 m/s.
Further, in some embodiments, a speed sensor is provided at a specific position, and the speed sensor may be selected from any existing type of speed sensor, and the type of the speed sensor is not particularly limited by the embodiments of the present invention.
The speed sensor can be arranged at a specific position by embedding, adhering and the like, and can also be fixed at the specific position by other fixing methods.
Wherein, in effecting a reduction in the rotational speed of the hub to reduce the speed of a particular position of the blade to less than or equal to a first speed threshold, the following steps may be taken:
(1) acquiring real-time speed of a specific position based on a speed sensor;
(2) and reducing the rotation speed of the hub according to the real-time speed until the speed of the specific position of the blade is reduced to be less than or equal to a first speed threshold value.
When the rotation speed of the hub is reduced according to the real-time speed until the speed of the specific position of the blade is reduced to be less than or equal to the first speed threshold value, specifically, if the real-time speed is greater than the first speed threshold value, the speed of the hub is continuously reduced until the real-time speed is less than or equal to the first speed threshold value. The embodiment forms closed-loop speed control through the feedback of the speed sensor, and the speed control is more accurate.
According to the control method of the wind generating set, disclosed by the embodiment of the invention, by monitoring the rainfall parameters of the area where the wind generating set is located, when the area where the wind generating set is located rains, the rotating speed of the hub which operates according to the rated rotating speed is reduced, so that the impact strength of rainwater on the surface of the blade is reduced, the rain erosion degree of the front edge of the blade is greatly reduced, and the reliability of the blade is improved.
FIG. 3 is a method flow diagram illustrating a wind turbine generator system control method according to another exemplary embodiment of the present disclosure; referring to fig. 3, the method for controlling a wind turbine generator system according to an embodiment of the present invention may include steps S301 to S303.
In S301, rainfall parameters of the area where the wind generating set is located are obtained.
In S302, when the hub is operating at the rated rotational speed, if the rainfall parameter indicates that there is rainfall in the location area, the rotational speed of the hub is reduced.
In S203, if the rainfall parameter indicates that the location area is changed from the rainfall state to the no-rainfall state, the rotation speed of the hub is increased, so that the hub operates at the rated rotation speed.
It should be understood that S203 is performed after S202.
By monitoring rainfall parameters of the area where the wind generating set is located, under the condition of no rain, the hub runs at a rated rotating speed, the wind generating set is ensured to be in the state of optimal wind energy capturing capacity, the influence of the blade tip speed on the efficiency of the whole machine is released, and the load of a transmission chain is reduced.
In some scenarios, the wind turbine may include multiple wind turbine generators, which may be located in the same area or may be located in close proximity. The rainfall monitoring unit is arranged on one of the wind generating sets, and for convenience of description, the wind generating set provided with the rainfall monitoring unit is called a first wind generating set, and other wind generating sets are called second wind generating sets. FIG. 4 is a method flow diagram illustrating a wind turbine generator system control method according to another exemplary embodiment of the present disclosure; referring to fig. 4, a control method of a wind turbine generator system according to an embodiment of the present invention may include steps S401 to S402.
In S401, a rainfall monitoring unit based on a first wind generating set detects rainfall parameters of a location area where the first wind generating set is located.
In S402, when the hubs of the first wind turbine generator set and the second wind turbine generator set both operate at the rated rotation speed, if the rainfall parameter indicates that there is rainfall in the location area, the rotation speed of the hub of the first wind turbine generator set is reduced, and the rotation speed of the hub of the second wind turbine generator set is synchronously reduced.
A rainfall monitoring unit is arranged on only one wind generating set to monitor rainfall parameters of an area where the wind generating set is located, and the purpose of controlling the rotating speed of hubs of the plurality of wind generating sets is achieved, so that blades of the plurality of wind generating sets are protected, and the cost is reduced.
Example two
The second embodiment of the invention provides a wind generating set control method, and an execution main body of the wind generating set control method of the second embodiment of the invention can be a main processor of the wind generating set, also can be other processors of the wind generating set, or a processor independent of the wind generating set. Referring to fig. 5, a wind turbine generator system control method according to a second embodiment of the present invention may include steps S501 to S504.
In S501, acquiring rainfall parameters of an area where the wind generating set is located;
in S502, when the hub is operating at the rated rotational speed, if the rainfall parameter is greater than the parameter threshold, the rotational speed of the hub is reduced.
The parameter threshold is greater than 0, but the parameter threshold is not set too large, in this embodiment, the parameter threshold is close to 0, for example, the rainfall parameter is the rainfall within 24 hours, and the parameter threshold may be 1 mm. The rainfall parameter is greater than 0 and less than or equal to the parameter threshold, which may be caused by non-rainfall factors such as dew at night, and the area where the wind generating set is located is considered not to be rained or the rainfall is considered to be small although the area where the wind generating set is located is rained, so that the influence on the blades of the wind generating set is small; when the rainfall parameter is larger than the parameter threshold value, the area where the wind generating set is located is considered to have rainfall, the influence of the rainfall on the blades of the wind generating set is large, the impact strength on the surfaces of the blades is large, and therefore the rotating speed of the blades needs to be controlled.
Further, after reducing the rotation speed of the hub, the method further comprises the following steps: and if the rainfall parameter is less than or equal to the parameter threshold value, increasing the rotating speed of the hub so that the hub operates according to the rated rotating speed.
Corresponding parts of the invention can be explained and explained with reference to corresponding parts of the control method of the wind generating set of the first embodiment, and are not described again.
Fig. 6 is a schematic structural view illustrating a wind generating set control apparatus according to an exemplary embodiment of the present invention; the embodiment of the wind generating set control device can be applied to wind generating sets. The device embodiments may be implemented by software, or by hardware, or by a combination of hardware and software. The software implementation is taken as an example, and as a device in a logical sense, a processor of the wind turbine generator set where the device is located reads corresponding computer program instructions in the nonvolatile memory into the memory for operation. From a hardware aspect, as shown in fig. 6, a hardware structure diagram of a wind turbine generator system where a wind turbine generator system control device of the present invention is located is shown, except for the processor, the memory, the network interface, and the nonvolatile memory shown in fig. 6, a wind turbine generator system where a device is located in an embodiment may also include other hardware according to the actual function of the wind turbine generator system, which is not described again.
Referring to fig. 6, the wind generating set control device according to the embodiment of the present invention may include one or more processors, where the processors are used to implement the wind generating set control method according to the first embodiment or the second embodiment of the present invention.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
In some embodiments, the wind turbine generator system comprises a rainfall monitoring unit electrically connected to the processor, and the rainfall monitoring unit is configured to detect rainfall parameters in a location area where the wind turbine generator system is located, and transmit the rainfall parameters to the processor.
In certain embodiments, the processor is in communication with an external device, and the rainfall parameters are sent to the processor by the external device.
Embodiments of the present invention further provide a wind turbine generator system, which may include a hub, blades, and the wind turbine generator system control device shown in the embodiment of fig. 6, wherein the blades are connected to an outer side of the hub, and a processor of the wind turbine generator system control device may be configured to control a rotation speed of the hub.
Optionally, in some embodiments, the surface of the blade is provided with a protective layer, so as to improve the impact strength of the rainwater which can be borne by the surface of the blade. Wherein, the material of the protective layer can be selected to be the material with stronger anti-corrosion capability.
The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, and the program is executed by a processor to implement the wind generating set control method in the first embodiment or the second embodiment of the invention.
The computer readable storage medium may be an internal storage unit, such as a hard disk or a memory, of the wind turbine generator system according to any of the foregoing embodiments. The computer readable storage medium may also be an external storage device of the wind turbine generator system, such as a plug-in hard disk, a Smart Media Card (SMC), an SD Card, a Flash memory Card (Flash Card), and the like provided on the device. Further, the computer readable storage medium may also comprise both an internal storage unit of the wind park and an external storage device. The computer-readable storage medium is used for storing the computer program and other programs and data required by the wind park and may also be used for temporarily storing data that has been or will be output.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (13)

1. A method of controlling a wind turbine generator system, the wind turbine generator system including a hub and blades attached to an outer side of the hub, the method comprising:
acquiring rainfall parameters of a position area where a wind generating set is located;
and when the hub operates according to the rated rotating speed, if the rainfall parameter indicates that rainfall exists in the position area, the rotating speed of the hub is reduced.
2. The method of claim 1, wherein the rainfall parameter comprises at least one of rainfall, intensity of rainfall, raindrop velocity, and raindrop volume size.
3. The method of claim 1, wherein reducing the rotational speed of the hub if the rainfall parameter indicates the presence of rainfall in the location area comprises:
if the rainfall parameters indicate that there is rainfall in the location area, reducing the rotational speed of the hub to reduce the speed of the particular location of the blade to less than or equal to a first speed threshold.
4. The method of claim 3, further comprising, after reducing the rotational speed of the hub to reduce the speed of a particular location of the blade to less than or equal to a first speed threshold, determining whether the rainfall parameter indicates that the amount of rainfall for the location area is less than or equal to a first parameter threshold, and if so, reducing the rotational speed of the hub to cause the speed of the particular location to be greater than a second speed threshold and less than or equal to the first speed threshold;
if not, reducing the rotation speed of the hub so that the speed of the specific position is smaller than or equal to the second speed threshold.
5. The method according to claim 3 or 4, wherein the specific location is one of a root, a transition and a tip of the blade, and the transition is a portion of the blade connecting the root and the tip.
6. The method of claim 5, wherein the magnitude of the first speed threshold corresponding to each particular location is positively correlated to the distance of the particular location from the hub center.
7. The method of claim 3, wherein the specific location is provided with a speed sensor, and wherein reducing the rotational speed of the hub to reduce the speed of the specific location of the blade to less than or equal to a first speed threshold comprises:
acquiring a real-time speed of the specific position based on the speed sensor;
and reducing the rotation speed of the hub according to the real-time speed until the speed of the specific position of the blade is reduced to be less than or equal to a first speed threshold value.
8. The method of claim 1, wherein the wind generating set comprises a rainfall monitoring unit, and the obtaining of the rainfall parameters of the area where the wind generating set is located comprises:
and acquiring rainfall parameters of the area where the wind generating set is located based on the rainfall monitoring unit.
9. The method of claim 8, wherein the wind power generation unit includes a plurality of wind power generation units, the rainfall monitoring unit is provided on one of the wind power generation units, and the method further comprises:
when the hub operates according to the rated rotating speed, if the rainfall parameters indicate that rainfall exists in the position area, the rotating speeds of the hubs of other wind generating sets are synchronously reduced.
10. The method of claim 1, wherein after reducing the rotational speed of the hub, further comprising:
and if the rainfall parameters indicate that the position area is changed from a rainfall state to a no-rainfall state, increasing the rotating speed of the hub, so that the hub operates according to the rated rotating speed.
11. A method according to claim 10, characterised in that the surface of the blade is provided with a protective layer.
12. A method of controlling a wind turbine generator system, the wind turbine generator system including a hub and blades attached to an outer side of the hub, the method comprising:
acquiring rainfall parameters of a position area where a wind generating set is located;
when the hub operates according to the rated rotating speed, if the rainfall parameter is larger than the parameter threshold value, the rotating speed of the hub is reduced.
13. The method of claim 12, wherein after reducing the rotational speed of the hub, further comprising:
and if the rainfall parameter is less than or equal to the parameter threshold value, increasing the rotating speed of the hub so that the hub operates according to the rated rotating speed.
CN202110024535.2A 2021-01-08 2021-01-08 Control method of wind generating set Pending CN112855432A (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109964030A (en) * 2016-11-18 2019-07-02 菱重维斯塔斯海上风力有限公司 Wind turbine is controlled based on rain droplet size
US20190368466A1 (en) * 2016-11-18 2019-12-05 Mhi Vestas Offshore Wind A/S Operating wind turbine above rating during low erosion conditions
CN110649842A (en) * 2018-06-27 2020-01-03 北京金风科创风电设备有限公司 Control method, device and system of wind generating set and storage medium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109964030A (en) * 2016-11-18 2019-07-02 菱重维斯塔斯海上风力有限公司 Wind turbine is controlled based on rain droplet size
US20190368466A1 (en) * 2016-11-18 2019-12-05 Mhi Vestas Offshore Wind A/S Operating wind turbine above rating during low erosion conditions
CN110649842A (en) * 2018-06-27 2020-01-03 北京金风科创风电设备有限公司 Control method, device and system of wind generating set and storage medium

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Application publication date: 20210528