CN108457798A - A kind of wind generating set yaw error control method and system - Google Patents
A kind of wind generating set yaw error control method and system Download PDFInfo
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- CN108457798A CN108457798A CN201810143201.5A CN201810143201A CN108457798A CN 108457798 A CN108457798 A CN 108457798A CN 201810143201 A CN201810143201 A CN 201810143201A CN 108457798 A CN108457798 A CN 108457798A
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Classifications
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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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
- F03D7/0268—Parking or storm protection
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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
-
- 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
- F05B2270/321—Wind directions
-
- 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
- F05B2270/328—Blade pitch angle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/329—Azimuth or yaw angle
-
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The present invention relates to a kind of wind generating set yaw error control method and system, the control method includes：Preset the correlogram of theoretical yaw error and minimum propeller pitch angle；Set the yaw error error code under different wind friction velocities；Obtain current wind speed, current wind angle, current nacelle position and current propeller pitch angle；Current yaw error is calculated according to current nacelle position and current propeller pitch angle；The corresponding amendment propeller pitch angle of the current yaw error is determined according to the correlogram, and current propeller pitch angle is adjusted according to the amendment propeller pitch angle.The given propeller pitch angle under current wind speed and current yaw error can be set in advance in wind generating set yaw error control method through the invention, wind power generating set, adjust given rotating speed and given power, reduce the load that blade and pitch variable bearings component are born.
Description
Technical field
The invention belongs to technical field of wind power generator, and in particular to a kind of wind generating set yaw error control method
And system.
Background technology
Wind-driven generator is to convert wind energy into mechanical work, and mechanical work drives rotor rotation, the electricity of final output alternating current
Power equipment.The yaw system of wind energy conversion system is also referred to as to wind apparatus, can be fast its role is to when the direction change of wind vector
Speed is smoothly directed at wind direction, so that wind wheel obtains maximum wind energy.Wind power generating set impeller can effectively capture the elder generation of wind energy
Certainly condition is the efficient to wind of yaw system, therefore the yaw system of unit plays vital work to wind turbine power generation performance
With.
Wind power generating set needs to yaw when starting, generating electricity, yaw error is more than the operating modes such as group setup value, with right
Quasi- incoming wind.With low wind speed, the exploitation of ultralow wind speed wind power generator group, impeller diameter constantly increases needed for unit.Due to
The huge inertia of impeller, usually after fitful wind occurs at least 1 to 2 second, wheel speed can just change, this will lead to impeller root
The load bearing increase in portion, this requires to improve for the ultimate load of the associated components such as pitch variable bearings, prominent in some wind speed, wind direction
Under the extreme operating condition of change, frequently quick variable pitch, the ultimate load of some components of unit are higher than under normal circumstances for pitch-controlled system
Go out several times or more, can not such as reduce load of the component under these special operation conditions, then component can not use universal component, and it is special to need
Customization, it is of high cost, the production cycle is long.
Invention content
In order to solve the above-mentioned problems in the prior art, the present invention provides a kind of wind generating set yaw errors
Control method and system.The technical problem to be solved in the present invention is achieved through the following technical solutions：
One aspect of the present invention provides a kind of wind generating set yaw error control method, which is characterized in that packet
It includes：
S1：Preset the correlogram of theoretical yaw error and minimum propeller pitch angle；
S2：Set the yaw error error code under different wind friction velocities；
S3：Obtain current wind speed, current wind angle, current nacelle position and current propeller pitch angle；
S4：Current yaw error is calculated according to current nacelle position and current propeller pitch angle；
S5：The corresponding amendment propeller pitch angle of the current yaw error is determined according to the correlogram, and according to described
It corrects propeller pitch angle and adjusts current propeller pitch angle.
In one embodiment of the invention, the S1 includes：
S11, a theoretical yaw error is chosen；
S12, successively in different initial propeller pitch angle, corresponding blade root is obtained according to the theoretical yaw error and bears to carry
Lotus；
S13, judge when the two neighboring blade root bears the first ratio of load reduction, choose first ratio and correspond to
Initial propeller pitch angle be the minimum propeller pitch angle；
S14：Choose multiple theoretical yaw errors successively, repeat step S12-S13, obtain multiple theoretical yaw errors with most
The coordinate points of small propeller pitch angle；
S15：The coordinate points are fitted, the correlogram of the theoretical yaw error and minimum propeller pitch angle is obtained.
In one embodiment of the invention, theoretical ranging from 0 ° -60 ° of the yaw error.
In one embodiment of the invention, the S16 is specifically included：
At least three coordinate points are chosen, are fitted to obtain theoretical yaw error and minimum propeller pitch angle using linear interpolation method
Correlogram.
In one embodiment of the invention, the S2 includes：
When wind speed is less than 7m/s, the yaw error error code is set as 30 °；
When wind speed is within the scope of 7m/s-14m/s, the yaw error error code is set as 20 °；
When wind speed is more than 14m/s, the yaw error error code is set as 10 °.
In one embodiment of the invention, the current yaw error is：
Current yaw error=current the nacelle position of current wind direction-.
In one embodiment of the invention, the S5 includes：
S51：The current yaw error is judged whether within the scope of the theoretical yaw error of the correlogram,
If so, S52 is thened follow the steps, if it is not, thening follow the steps S56；
S52：It is corresponding with the current yaw error on the correlogram to judge whether the current propeller pitch angle is less than
Minimum propeller pitch angle, if so, S53 is thened follow the steps, if it is not, thening follow the steps S54；
S53：The current propeller pitch angle is adjusted to the minimum propeller pitch angle, wind power generating set normal operation；
S54：The current propeller pitch angle remains unchanged, wind power generating set normal operation；
S55：The size for judging current yaw error yaw error error code corresponding with current wind speed, works as when described
When preceding yaw error is more than the error code and continues setting time, control wind power generating set is out of service.
In one embodiment of the invention, the setting time is 240-360s.
Another aspect provides a kind of wind turbine control systems, including main control unit, survey wind list
Member, the unit that tests the speed, propeller pitch angle give unit, torque give unit, nacelle position measuring unit, yaw control unit, operation with
Shut down control unit and condition monitoring and failure monitoring unit, wherein
The wind detection unit is for measuring current wind angle and current wind speed；
The rotating speed of the unit for measuring generator and impeller that test the speed；
The propeller pitch angle gives unit for setting current propeller pitch angle；
The torque gives unit for setting current torque；
The nacelle position measuring unit is for measuring current nacelle position；
The condition monitoring is used to set the yaw error error code of the wind power generating set with failure monitoring unit；
It is preset with the correlogram of theoretical yaw error and minimum propeller pitch angle in the main control unit, is used for root
The yaw control unit execution yaw, which is controlled, according to the correlogram operates and control the operation and shutdown control list
Member executes operation or shutdown operation.
Compared with prior art, beneficial effects of the present invention：
1, wind generating set yaw error control method through the invention, wind power generating set can be set in advance
Minimum propeller pitch angle under current wind speed and yaw error, adjusts given rotating speed and given power, avoids wind power generating set in wind
Speed uprushes with wind direction and waits the frequent quick variable pitch of pitch-controlled system under special operation conditions, is held to reduce blade and pitch variable bearings component
The load received.
2, wind generating set yaw error control method through the invention uprushes in wind speed and direction and waits special operation conditions
Under, load reduction that blade, pitch variable bearings component are born so that universal component may be used in blade and pitch variable bearings component,
Without specific customization the production cycle is shortened to reduce cost.
Description of the drawings
Fig. 1 is a kind of flow diagram of wind generating set yaw error control method provided in an embodiment of the present invention；
Fig. 2 is the flow of generative theory yaw error provided in an embodiment of the present invention and the correlogram of minimum propeller pitch angle
Schematic diagram；
Fig. 3 is the curve graph of yaw error provided in an embodiment of the present invention and minimum propeller pitch angle；
Fig. 4 is the relational graph of yaw error provided in an embodiment of the present invention and wind direction, nacelle position；
Fig. 5 is the curve graph of wind speed provided in an embodiment of the present invention and yaw error error code；
Fig. 6 is a kind of particular flow sheet of wind generating set yaw error control method provided in an embodiment of the present invention；
Fig. 7 is the structure diagram of wind turbine control system provided in an embodiment of the present invention.
Specific implementation mode
Further detailed description is done to the present invention with reference to specific embodiment, but embodiments of the present invention are not limited to
This.
Embodiment one
Fig. 1 is referred to, Fig. 1 is a kind of stream of wind generating set yaw error control method provided in an embodiment of the present invention
Journey schematic diagram.The wind generating set yaw error control method of the present embodiment includes：
S1：Preset the correlogram of theoretical yaw error and minimum propeller pitch angle；
S2：Set the yaw error error code under different wind friction velocities；
S3：Obtain current wind speed, current wind angle, current nacelle position and current propeller pitch angle；
S4：Current yaw error is calculated according to current nacelle position and current propeller pitch angle；
S5：The corresponding amendment propeller pitch angle of the current yaw error is determined according to the correlogram, and according to described
It corrects propeller pitch angle and adjusts current propeller pitch angle.
Further, Fig. 2 is referred to, Fig. 2 is generation yaw error provided in an embodiment of the present invention and minimum propeller pitch angle
The flow diagram of correlogram.The step S1 is specifically included：
S11, a theoretical yaw error is chosen；
S12, successively in different initial propeller pitch angle, corresponding blade root is obtained according to the theoretical yaw error and bears to carry
Lotus；
S13, judge when the two neighboring blade root bears the first ratio of load reduction, choose first ratio and correspond to
Initial propeller pitch angle be the minimum propeller pitch angle；
S14：Choose multiple theoretical yaw errors successively, repeat step S12-S13, obtain multiple theoretical yaw errors with most
The coordinate points of small propeller pitch angle；
S15：The coordinate points are fitted, the correlogram of the theoretical yaw error and minimum propeller pitch angle is obtained.
Specifically, a theoretical yaw error is chosen first, such as it is 25 ° to choose theoretical yaw error；Then choose one
The different initial propeller pitch angle of group, such as take 30 °~0 °, a value is chosen every 1 ° and is used as initial propeller pitch angle, it is described it is theoretical partially
One group of blade root is obtained under boat error and the initial propeller pitch angle (30 °, 29 °, 28 °, 27 ° ... 3 °, 2 °, 1 °, 0 °) being sequentially reduced to hold
Loaded, when selecting a certain initial propeller pitch angle, the blade root, which bears the load bearing value of the previous blade root of load ratio, to be reduced
More than first ratio (such as 5%), then it is minimum propeller pitch angle to choose the initial propeller pitch angle that the blade root is born corresponding to load.Example
Such as, when 2 ° of initial propeller pitch angle, corresponding blade root bears load ratio corresponding blade root when 3 ° of initial propeller pitch angle and bears load reduction
5% or more, then minimum propeller pitch angle when can to select 2 ° of initial propeller pitch angle for theoretical yaw error be 25 ° then obtains at this time
The coordinate points (25 °, 2 °) of one theoretical yaw error and minimum propeller pitch angle.
Herein, the first ratio may be considered when wind power generating set works normally, and adjacent blade root bears load institute
Allow the maximum rate reduced.In the present embodiment, the value of first ratio is 5%.
Further, theoretical ranging from 0 ° -60 ° of the yaw error.Specifically, the value of yaw error theoretically can be with
It is -180 °~180 °.However, in the wind power generating set actual motion course of work, yaw error generally within the scope of 0~60 °,
Therefore, rule of thumb, when making yaw error and the correlogram of minimum propeller pitch angle, theoretical yaw error is also at 0 ° -60 °
In range.
Further, it according to the coordinate points of three theoretical yaw errors and minimum propeller pitch angle, is fitted by linear interpolation method
Obtain the correlogram of theoretical yaw error and minimum propeller pitch angle.
In the present embodiment, theoretical yaw error and the fit procedure of the correlogram of minimum propeller pitch angle are to pass through wind-force
The generations such as generating set software for calculation Bladed or Flex5, in the correlogram, the theory yaw error limitation
In θmin-θmaxIn range, it is generally the case that θminValue is 0, θmax(such as 300s) current wind speed can be higher than within a certain period of time
The yaw error value of lower activation yaw error major break down code；In θmin-θmaxThe propeller pitch angle corresponding to multiple discrete points in range
It is fitted by linear interpolation method and constitutes the curve, as shown in Figure 3.It, can when complete machine ultimate load is less than the requirement load of component
To take three coordinate points, other points are using curve matchings modes such as linear interpolations；When complete machine ultimate load is more than the requirement of component
When load, it need to then carry out multiple spot according to error code function and defined activation error code time, the multiple LOAD FOR of progress and insert
Value or linear interpolation fitting.
Fig. 3 is referred to, Fig. 3 is the curve graph of yaw error provided in an embodiment of the present invention and minimum propeller pitch angle.As schemed
Show, in the graph, yaw error θ is abscissa, and minimum propeller pitch angle β is ordinate, which is by three coordinates
Point is fitted using linear interpolation method, but in other embodiments, it is not limited to this kind of curve matching of linear interpolation method
Mode.
In the present embodiment, current wind speed and current wind angle are measured by wind detection unit；Pass through the given control of propeller pitch angle
Unit measures current propeller pitch angle；Pulse signal is measured by photoelectric proximity switch, or using sliding transformer measurement voltage signal
And corresponding measures conversion unit measures current nacelle position.
Further, Fig. 4 is referred to, Fig. 4 is the pass of yaw error provided in an embodiment of the present invention and wind direction, nacelle position
System's figure.As shown, the detailed process of the step S4 is as follows：Current yaw error=current the nacelle position of current wind angle-.
Current yaw error range is -180 °~180 °, and wind measuring system unit detects current wind angle and nacelle position sensor is examined
Current nacelle position is surveyed, the usually opposite direct north of regulation is clockwise for just, for example, when wind angle is 70 °, nacelle position
It it is 20 °, then yaw error is 50 °.
Wind generating set yaw error control method through this embodiment, wind power generating set can be set in advance
Given minimum propeller pitch angle under current wind speed, yaw error, adjusts given rotating speed and given power, wind power generating set is avoided to exist
Wind speed and direction, which is uprushed, waits the frequent quick variable pitch of pitch-controlled system under special operation conditions, to reduce blade, pitch variable bearings component institute
The load born.
Embodiment two
On the basis of the above embodiments, Fig. 5 is referred to, Fig. 5 is wind speed provided in an embodiment of the present invention and yaw error
The curve graph of error code.As shown, in the present embodiment, the S2 includes：
When wind speed is less than 7m/s, the yaw error error code is set as 30 °；
When wind speed is within the scope of 7m/s-14m/s, the yaw error error code is set as 20 °；
When wind speed is more than 14m/s, the yaw error error code is set as 10 °.
Specifically, yaw error error code is piecewise function, and when wind speed is less than 7m/s, yaw error error code is 30 °；
When wind speed is within the scope of 7m/s-14m/s, yaw error error code is 20 °；When wind speed is more than 14m/s, yaw error failure
Code is 10 °.In addition, in the present embodiment, the incision wind speed of wind power generating set is 3m/s, cut-out wind speed 20m/s.
Further, Fig. 6 is referred to, Fig. 6 is a kind of wind generating set yaw error control provided in an embodiment of the present invention
The particular flow sheet of method processed.As shown, step S5 is specifically included：
S51：The current yaw error is judged whether within the scope of the theoretical yaw error of the correlogram,
If so, S52 is thened follow the steps, if it is not, thening follow the steps S55；
S52：It is corresponding with the current yaw error on the correlogram to judge whether the current propeller pitch angle is less than
Minimum propeller pitch angle, if so, S53 is thened follow the steps, if it is not, thening follow the steps S54；
S53：The current propeller pitch angle is adjusted to the minimum propeller pitch angle, wind power generating set normal operation；
S54：The current propeller pitch angle remains unchanged, wind power generating set normal operation；
S55：The size for judging current yaw error yaw error error code corresponding with current wind speed, works as when described
When preceding yaw error is more than the error code and continues setting time, control wind power generating set is out of service.
In the present embodiment, the setting time is 300s, that is to say, that current yaw error is more than the error code
State continues 300s or more, and wind power generating set then executes shutdown operation.
Wind generating set yaw error control method through this embodiment uprushes in wind speed and direction and waits special operation conditions
Under, blade, pitch variable bearings component the load reduction born so that general portion may be used in blade and pitch variable bearings component
Part shortens the production cycle without specific customization to reduce cost.
Embodiment three
Fig. 7 is referred to, Fig. 7 is the structure diagram of wind turbine control system provided in an embodiment of the present invention.This reality
It applies example and discloses a kind of wind turbine control system, including main control unit 1, wind detection unit 2, test the speed unit 3, propeller pitch angle
Given unit 4, torque give unit 5, nacelle position measuring unit 6, yaw control unit 7, operation with shut down control unit 8 with
And condition monitoring and failure monitoring unit 9, wherein wind detection unit 2, the unit 3 that tests the speed, propeller pitch angle give unit 4, torque to order
Member 5, nacelle position measuring unit 6, yaw control unit 7, operation and shutdown control unit 8 and condition monitoring and failure monitoring
Unit 9 is respectively electrically connected to main control unit 1.
Specifically, wind detection unit 2 is for measuring current wind angle and current wind speed.The unit 3 that tests the speed is for measuring generator
And the rotating speed of impeller.In the present embodiment, wind detection unit 2 is unit wind speed, wind direction, environment temperature, humidity, height above sea level sensing
Device composition device, using in mechanical anemoclinograph, ultrasonic sensor, laser radar sensor any one or
The sensor of multiple combinations wind speed and direction.The unit 3 that tests the speed is slow-speed shaft, high speed shaft (if any) speed measuring device, is connect using photo-electric
Nearly switch, electromagnetic type absolute value encoder etc..Propeller pitch angle gives unit 4 for setting current propeller pitch angle.Torque gives unit 5 and uses
In setting current torque.Nacelle position measuring unit 6 includes nacelle position sensor, for measuring current nacelle position.Shape
State monitors the yaw error error code for being used to set the wind power generating set with failure monitoring unit 9.Main control unit 1 for pair
The data such as the current wind angle, current wind speed, the current nacelle position that receive carry out data processing, and control yaw control unit
7 carry out yaw operation, the control operation carries out operation or shutdown operation with control unit 8 is shut down.
Specifically, the control process of the wind turbine control system is as follows：
The correlogram of a theoretical yaw error and minimum propeller pitch angle is preset in main control unit 1, it is described
The preparation method of correlogram can be found in above-described embodiment；
Yaw control unit 7 calculates current yaw error：Current yaw error=current the nacelle position of current wind angle-,
And then will determine that result is sent to main control unit 1, main control unit 1 judges the current yaw error described related bent
The magnitude relationship of position and current propeller pitch angle and minimum propeller pitch angle on line chart, specific comparison procedure refer to above-mentioned implementation
Example.Such as judgment result displays abnormal signal, then main control unit 1 quotes dependent failure, shuts down strategy if you need to execute, passes through operation
Shutdown operation is executed with shutdown mode control unit 8；As judgment result displays signal is normal and current propeller pitch angle is less than minimum paddle
Elongation then gives unit 5 by torque and propeller pitch angle gives unit 4 and adjusts given given torque respectively and to fixed pitch
Angle, and be sent to current transformer and pitch-controlled system by CanOpen communications protocol or other industry communications protocols.
By the wind turbine control system, speed-variable frequency-constant wind-driven generator group can be set in advance current wind speed,
Given minimum propeller pitch angle under yaw error adjusts the given torque that torque gives in control unit and gives control list with propeller pitch angle
Given propeller pitch angle in member；Avoid wind power generating set in the case where wind speed and direction uprushes special operation condition, pitch-controlled system it is frequent fast
Fast variable pitch causes blade root ultimate load, reduces the ultimate load of blade, pitch variable bearings component.
The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be said that
The specific implementation of the present invention is confined to these explanations.For those of ordinary skill in the art to which the present invention belongs, exist
Under the premise of not departing from present inventive concept, a number of simple deductions or replacements can also be made, all shall be regarded as belonging to the present invention's
Protection domain.
Claims (9)
1. a kind of wind generating set yaw error control method, which is characterized in that including：
S1：Preset the correlogram of theoretical yaw error and minimum propeller pitch angle；
S2：Set the yaw error error code under different wind friction velocities；
S3：Obtain current wind speed, current wind angle, current nacelle position and current propeller pitch angle；
S4：Current yaw error is calculated according to current nacelle position and current propeller pitch angle；
S5：The corresponding amendment propeller pitch angle of the current yaw error is determined according to the correlogram, and according to the amendment
Propeller pitch angle adjusts current propeller pitch angle.
2. wind generating set yaw error control method according to claim 1, which is characterized in that the S1 includes：
S11：Choose a theoretical yaw error；
S12：Successively in different initial propeller pitch angles, corresponding blade root is obtained according to the theoretical yaw error and bears load；
S13：Judge when the two neighboring blade root bears the first ratio of load reduction, it is corresponding just to choose first ratio
Beginning propeller pitch angle is the minimum propeller pitch angle；
S14：Multiple theoretical yaw errors are chosen successively, repeat step S12-S13, obtain multiple theoretical yaw errors and minimum paddle
The coordinate points of elongation；
S15：The coordinate points are fitted, the correlogram of the theoretical yaw error and minimum propeller pitch angle is obtained.
3. wind generating set yaw error control method according to claim 1, which is characterized in that the theoretical yaw
Error range is 0 ° -60 °.
4. wind generating set yaw error control method according to claim 2, which is characterized in that the S16 is specific
Including：
At least three coordinate points are chosen, are fitted to obtain the phase of theoretical yaw error and minimum propeller pitch angle using linear interpolation method
Close curve graph.
5. wind generating set yaw error control method according to claim 1, which is characterized in that the S2 includes：
When wind speed is less than 7m/s, the yaw error error code is set as 30 °；
When wind speed is within the scope of 7m/s-14m/s, the yaw error error code is set as 20 °；
When wind speed is more than 14m/s, the yaw error error code is set as 10 °.
6. wind generating set yaw error control method according to claim 1, which is characterized in that the current yaw
Error is：
Current yaw error=current the nacelle position of current wind direction-.
7. wind generating set yaw error control method according to claim 1, which is characterized in that the S5 includes：
S51：The current yaw error is judged whether within the scope of the theoretical yaw error of the correlogram, if
It is to then follow the steps S52, if it is not, thening follow the steps S56；
S52：It is corresponding most with the current yaw error on the correlogram to judge whether the current propeller pitch angle is less than
Small propeller pitch angle, if so, S53 is thened follow the steps, if it is not, thening follow the steps S54；
S53：The current propeller pitch angle is adjusted to the minimum propeller pitch angle, wind power generating set normal operation；
S54：The current propeller pitch angle remains unchanged, wind power generating set normal operation；
S55：The size for judging current yaw error yaw error error code corresponding with current wind speed, when described current inclined
When boat error is more than the error code and continues setting time, control wind power generating set is out of service.
8. wind generating set yaw error control method according to claim 7, which is characterized in that
The setting time is 240-360s.
9. a kind of wind turbine control system, which is characterized in that including main control unit (1), wind detection unit (2), test the speed
Unit (3), propeller pitch angle give unit (4), torque gives unit (5), nacelle position measuring unit (6), yaw control unit
(7), operation and shutdown control unit (8) and condition monitoring and failure monitoring unit (9), wherein
The wind detection unit (2) is for measuring current wind angle and current wind speed；
The unit that tests the speed (3) is used to measure the rotating speed of generator and impeller；
The propeller pitch angle gives unit (4) for setting current propeller pitch angle；
The torque gives unit (5) for setting current torque；
The nacelle position measuring unit (6) is for measuring current nacelle position；
The condition monitoring is used to set the yaw error error code of the wind power generating set with failure monitoring unit (9)；
It is preset with the correlogram of theoretical yaw error and minimum propeller pitch angle in the main control unit (1), is used for root
Yaw control unit (7) the execution yaw operation, which is controlled, according to the correlogram and controls the operation is controlled with shutdown
Unit (8) executes operation or shutdown operation.
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| CN112796940A (en) * | 2021-01-29 | 2021-05-14 | 东方电气风电有限公司 | Wind alignment method for wind direction data missing fan |
| WO2023231247A1 (en) * | 2022-05-31 | 2023-12-07 | 金风科技股份有限公司 | Maintenance method and apparatus for wind turbine, and device |
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