CN107882679B - The Yaw control method and control device of wind power plant - Google Patents
The Yaw control method and control device of wind power plant 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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- G—PHYSICS
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- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
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- 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
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- 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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/70—Smart grids as climate change mitigation technology in the energy generation sector
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- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
Abstract
The embodiment of the present invention provides the Yaw control method and control device of a kind of wind power plant, wherein this method comprises: obtaining the wind speed test value and wind direction test value of each wind power generating set in wind power plant；According to the wind speed test value and wind direction test value of each wind power generating set, the wind field map of the wind power plant is generated；According to the wind field map, yaw control is carried out to the target wind power generating set in the wind power plant.The Yaw control method and control device of wind power plant provided in an embodiment of the present invention overcome influence of the wake effect to yaw control in tradition yaw control process, improve the efficiency and wind energy utilization of yaw control.
Description
Technical field
The present embodiments relate to the Yaw control methods and control of technical field of wind power generation more particularly to a kind of wind power plant
Device processed.
Background technique
Currently, not only resource is limited for the conventional energy resource based on coal, petroleum, natural gas, but also causes serious atmosphere
Pollution.With the continuous quickening of world industry process, so that energy consumption gradually increases, the discharge of global industry harmful substance
Measure it is growing day by day, to cause unusual weather conditions, the problems such as disaster increases, malignant disease is multiple.Therefore, to renewable cleaning energy
The development and utilization of the development and utilization in source, especially wind energy have been subjected to the great attention of countries in the world.
The yaw control of wind power generating set in wind power plant at present be according to the anemobiagraph of wind power generating set itself and
What the test data of wind vane was judged, and geographical environment not only locating between each wind power generating set in wind power plant exists
Difference, and can also have the influence of wake effect between wind power generating set, it cannot be fine so as to cause wind power generating set
The main wind energy of tracking direction, while the data that wind vane and anemobiagraph measure can also have biggish random error, so that wind
Power generator group cannot accurately hold that the wind regime of wind field entirety, the yaw frequency of wind power generating set be higher, wind energy captures very much
Ability is poor.
Summary of the invention
The embodiment of the present invention provides the Yaw control method and control device of a kind of wind power plant, to overcome tradition yaw control
Influence of the wake effect to yaw control in method processed improves the efficiency of yaw control and the utilization rate of wind energy.
First aspect of the embodiment of the present invention provides a kind of Yaw control method of wind power plant, this method comprises:
Obtain the wind speed test value and wind direction test value of each wind power generating set in wind power plant；
According to the wind speed test value and wind direction test value of each wind power generating set, the wind field figure of the wind power plant is generated
Spectrum；
According to the wind field map, yaw control is carried out to the target wind power generating set in the wind power plant.
Second aspect of the embodiment of the present invention provides a kind of yaw control device of wind power plant, which includes:
Module is obtained, for obtaining the wind speed test value and wind direction test value of each wind power generating set in wind power plant；
Generation module, for the wind speed test value and wind direction test value according to each wind power generating set, described in generation
The wind field map of wind power plant；
Control module, for being carried out to the target wind power generating set in the wind power plant inclined according to the wind field map
Boat control.
The embodiment of the present invention, by obtaining the wind speed test value and wind direction test value of each wind power generating set in wind power plant,
Wind field map is generated, to realize that the yaw to wind power generating set each in wind power plant controls according to the wind field map of generation.And
It is not conventionally according to the wind speed test value of every wind power generating set itself and wind direction test value to every typhoon power
Generating set carries out yaw control.Since the embodiment of the present invention is to carry out partially on the basis of wind field map to wind power generating set
Boat control, it is thus possible to the wind field situation of wind power plant be held on the whole based on wind field map, to eliminate tail
Influence of the effect to yaw control is flowed, the efficiency of yaw control and the utilization rate of wind energy are improved.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the flow diagram of the Yaw control method for the wind power plant that one embodiment of the invention provides；
Fig. 2 is the flow diagram of the method for building up for the wind field genome that one embodiment of the invention provides；
Fig. 3 is the structural schematic diagram for the wind field genome that one embodiment of the invention provides；
Fig. 4 is the flow diagram of the execution method for the step S103 that one embodiment of the invention provides；
Fig. 5 is the partial enlarged view of Fig. 3；
Fig. 6 is the structural schematic diagram of the yaw control device for the wind power plant that one embodiment of the invention provides；
Fig. 7 is the structural representation of generation module 12 in the yaw control device for the wind power plant that one embodiment of the invention provides
Figure；
Fig. 8 is the structural representation of control module 13 in the yaw control device for the wind power plant that one embodiment of the invention provides
Figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The term " includes " of description and claims of this specification and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, the device of the process or structure that contain series of steps is not necessarily limited to clearly arrange
Those of out structure or step but may include other steps being not clearly listed or intrinsic for these processes or device
Rapid or structure.
Fig. 1 is the flow diagram for the Yaw control method of wind power plant that one embodiment of the invention provides, and this method can be with
It is executed by a yaw control device.As shown in Figure 1, method provided in this embodiment includes the following steps.
Step S101, the wind speed test value and wind direction test value of each wind power generating set in wind power plant are obtained.
" wind speed test value " and " wind direction test value " involved in this embodiment can be wind-driven generator in wind power plant
Group tests the instantaneous wind speed value obtained Jing Guo Lv Bochuli and instantaneous wind direction value, it is preferred that is also possible to wind-force in wind power plant
The mean wind speed value and mean wind direction value that generating set measures in preset time range.
In practical application, when " wind speed test value " and " wind direction test value " is that wind power generating set test obtains in wind power plant
Instantaneous wind speed value and when instantaneous wind direction value, wind speed test value can pass through the wind that the test of the anemobiagraph of wind power generating set obtains
Fast instantaneous value obtains after filtering processing, and wind direction test value can test the wind obtained by the wind vane of wind power generating set
It is obtained after filtering processing to instantaneous value.Optionally, it is single that a storage can be set in the present embodiment in yaw control device
Member, and the anemobiagraph of wind power generating set each in wind power plant and wind vane are accessed into the storage unit, work as wind power generating set
After test obtains instantaneous wind direction value and the instantaneous wind speed value of wind field, yaw control device passes through filter (such as Kalman filter
Device) instantaneous wind direction value and instantaneous wind speed value are filtered, and by the instantaneous wind direction value and instantaneous wind speed after filtering processing
Value with the mark associated storage of corresponding time tag and wind power generating set in the memory unit.
By taking Kalman filter as an example, in the present embodiment, by Kalman filter to instantaneous wind direction value and instantaneous wind speed
The principle that value is filtered is as follows:
First according to expression formula (1)-(2)
xk+1=f (xk)+Γkuk (1)
zk,m=hk,m(xk)+υk,m (2)
Define the discrete system equation of more wind power generating sets, in formula, xkAnd zk,mRespectively indicate k moment wind-driven generator
The state vector and measurement vector of group；F () and h () is respectively the state transition function and measurement function of filter；ΓkTable
Show process noise distribution matrix；ukAnd υk,mIt respectively indicates process noise and measures noise；The label of m expression wind power generating set.
zk,mThe vector for including wind direction instantaneous value and wind speed instantaneous value for one.zk,mIt can indicate are as follows:
zk,m=[dk,m,sk,m] (3)
dk,m,sk,mRespectively indicate the wind direction instantaneous value and wind speed instantaneous value of m-th of wind power generating set of kth moment.
Then state for time is updated according to following formula, if k-1 moment covariance matrix pk-1Positive definite then carries out it
Factorization obtains:
pk-1,k-1=sk-1,k-1(sk-1,k-1)T (4)
Then according to expression formula (5)
Volume point is estimated, whereinIndicate i-th of volume point, andAt this point, N indicates volume point number, N=2n, n expression are estimated wind-driven generator
The vector dimension of group state；[ε]i∈Rn×1Indicate [In×n,-In×n]∈Rn×NThe i-th column element, In×nIndicate that n ties up unit matrix.
It is propagated according to the conversion that expression formula (6) carry out volume point, then measurement predictor is solved according to expression formula (7), according to expression formula
(8) covariance matrix is calculated, wherein Qk-1Indicate system noise covariance matrix.
Further, following process is carried out again according to above-mentioned expression formula (1)-(8):
Step 1 carries out matrix pk,k-1Factorization is as follows:
pk,k-1=sk,k-1(sk,k-1)T (9)
Step 2, progress volume point estimation are as follows:
Step 3, progress volume point are propagated as follows:
Step 4 calculates measurement predictor
Step 5 calculates measurement varianceWith quantity of state test cross Cross-covariance
Wherein, ΘkIt indicates to measure variance matrix.
Step 6, solution gain are as follows:
Step 7 calculates state estimationAnd error co-variance matrix pk,k:
To complete the filtering processing to wind speed instantaneous value and wind direction instantaneous value.Here cross filter process with it is existing
The filtering principle of Kalman filter is similar in technology, is seldom described herein.
" the wind speed test value " and " wind direction test value " being related to described in the present embodiment is wind power generating set default
When the mean wind speed value and mean wind direction value that measure in time range, yaw control device obtains each wind-force hair from storage unit
Motor group test in preset time range acquisition all instantaneous wind speed values and all instantaneous wind direction values.And obtaining those winks
When air speed value and instantaneous wind direction value after, according to the mapping relations and wind direction value between preset air speed value and wind speed test value
With the mapping relations between wind direction test value, mean wind speed value of each wind power generating set in above-mentioned preset time range is obtained
With mean wind direction value, such as in the present embodiment, the mapping relations between air speed value and wind speed test value can be specially one
Function average operation relation based on air speed value, by air speed value that wind power generating set is measured in preset time range into
Row is averaging operation, obtains the mean wind speed value of wind power generating set in preset time range.Similar, wind direction value and wind direction
Mapping relations between test value can also be specially the function average operation relation based on wind direction value, by wind
The wind direction value that power generator group measures in preset time range carries out averaging operation, obtains wind power generating set when default
Between mean wind direction value in range, merely illustrative explanation herein certainly, rather than to unique restriction of the invention.
Further include step S102 in Fig. 1, is tested according to the wind speed test value of each wind power generating set and wind direction
Value, generates the wind field map of the wind power plant.
It, can according to the wind field map that the wind speed test value of each wind power generating set and wind direction test value generate in practical application
To include shaped form map, genome etc..Preferably, wind field map involved in this embodiment is the gene map of wind field
Spectrum.
Particularly, as shown in Fig. 2, in the present embodiment, the method for building up of the genome of wind field be may include steps of:
Step S11, according to the wind speed test value of wind power generating set each in the wind power plant, each wind-power electricity generation is determined
Position of the unit in wind field genome.
Fig. 3 is the structural schematic diagram for the wind field genome that one embodiment of the invention provides, as shown in figure 3, N*1 in Fig. 3
~N*N is the element of wind field genome, and Δ s is the difference of wind speed test value between two elements in wind field genome, θ0,
θ1, θ2, θ3The angle value of four apex angles respectively in genome.Wherein, the element in the upper triangle of Fig. 3 is genome
Main expression body, i.e., N*1, N*2, N*3 be Fig. 3 shown in genome main expression body.Particularly, the upper triangle in Fig. 3 and
Lower triangle is isosceles triangle.
Position of the so-called each wind power generating set of determination in wind field genome in the present embodiment, is determining each wind
Corresponding relationship in power generator group and Fig. 3 between element N*1~N*N.It is assumed that " the wind speed survey being related to described in the present embodiment
Examination value " and " wind direction test value " are the mean wind speed value and mean wind direction that wind power generating set measures in preset time range
Value, then yaw control device is after the wind speed test value and wind direction test value for obtaining each wind power generating set, first to each wind
The wind speed test value of power generator group, is ranked up according to descending sequence, and calculates each wind power generating set default
The standard deviation of wind direction value in time range.After this, system is by the mark of the maximum wind power generating set of wind speed test value
It is corresponding with the N*1 element in Fig. 3, wind speed test value is ordered as in 2,3 two wind-driven generators wind direction value standard deviation compared with
The mark of big wind-driven generator is corresponding with element N*2, by the mark and element of the lesser wind-driven generator of the two Plays difference
N*3 is corresponding.Further, then by wind speed test value it is biggish to be ordered as wind direction value standard deviation in 4,5 two wind-driven generators
The mark of wind-driven generator is corresponding with element N*4, and the mark of the lesser wind-driven generator of standard deviation is corresponding with element N*5, with
This analogizes, and the mark of the biggish wind power generating set of wind direction value standard deviation is corresponding with the element in left side in Fig. 3, by wind direction value mark
The mark of the quasi- lesser wind power generating set of difference is corresponding with the element on right side in Fig. 3, so that it is determined that each wind-power electricity generation in wind power plant
Position of the unit in wind field genome.Certainly it above are only and illustrate, in practical application, where N*1, N*2, N*3
It may include three or three or more elements in upper triangle.Alternatively, it is also possible to by the biggish wind-power electricity generation of wind direction standard deviation
Unit is corresponding with the element on right side in Fig. 3, by the element pair in left side in the lesser wind power generating set of wind direction standard deviation and Fig. 3
It answers, corresponding method is similar with above-mentioned example, repeats no more herein.
In addition, working as " the wind speed test value " and " wind direction test value " being related to described in the present embodiment is wind-force hair in wind power plant
When the instantaneous wind speed value of motor group test acquisition and instantaneous wind direction value, position of each wind power generating set in wind field genome
Determination method it is similar with above-mentioned example, difference be, when " wind speed test value " and " wind direction test value " be wind power plant apoplexy
When the instantaneous wind speed value of power generator group test acquisition and instantaneous wind direction value, directly according to wind instantaneous between each wind power generating set
To the size of value, determine that each wind power generating set is, or element pair with right side corresponding with the element in left side in genome
It answers, rather than is determined according to standard deviation.
Still by taking Fig. 3 as an example, when " wind speed test value " and " wind direction test value " is that wind power generating set test obtains in wind power plant
When the wind speed instantaneous value and wind direction instantaneous value that obtain, by the N*1 in the mark and Fig. 3 of the maximum wind power generating set of wind speed instantaneous value
Element is corresponding, and wind speed instantaneous value is ordered as to the biggish wind power generating set of wind direction value in 2,3 two wind-driven generators
Mark is corresponding with element N*2, and the mark of the lesser wind power generating set of wind direction value in the two is corresponding with element N*3.Further
, then wind speed instantaneous value is ordered as to the mark of the biggish wind power generating set of wind direction value in 4,5 two wind power generating sets
It is corresponding with element N*4, the mark of the lesser wind power generating set of wind direction value is corresponding with element N*5, and so on, by wind direction value
The mark of biggish wind power generating set is corresponding with the element in left side in Fig. 3, by the mark of the lesser wind power generating set of wind direction value
Knowledge is corresponding with the element on right side in Fig. 3, so that it is determined that position of each wind power generating set in wind field genome in wind power plant.
Certain explanation merely illustrative herein, is not to unique restriction of the invention.
What needs to be explained here is why by first three wind power generating set of wind speed test value ranking in the present embodiment
Mark is put in the upper triangle of wind field genome shown in Fig. 3.Firstly because to construct this kind of map, come from geometric angle
It says, triangle has stability, and three data have certain reliability for data Angle.According to member each on upper triangle
The corresponding wind speed test value of element and wind direction test value can increase to the wind field confidence level that integrally main wind regime judges, avoid arbitrary.
Secondly, be that maximum wind velocity is tracked before not up to rated wind speed because of wind power generating set, it, can when being more than rated wind speed
According to air speed value corresponding to the element on genome in triangle, it is much to determine that the received degree of transfiniting of wind field has, thus
Facilitate hedging regulation.It again, is because having highest wind velocity test value, and carry out map drafting, Neng Gouyou on this basis
Help the wind regime distribution for being better understood by wind power plant entirety, so as to wind power generating set of proceeding from the situation as a whole, so that
Wind field integrally generates electricity maximization.In addition, leaving for regulation wind power generating set from the integral status of wind field can be avoided wind-force hair
Error caused by the data noise of motor group selftest is too big, to improve the accuracy of regulation._
In Fig. 2, further includes step S12, according to the wind direction test value of wind power generating set each in the wind power plant, determine
The angle value of each apex angle of the wind field genome.
By taking Fig. 3 as an example, first according to the corresponding wind direction test value of expression body main in genome, the prevailing wind direction of wind field is determined
Value, the determination method of prevailing wind direction value are as follows:
It is assumed that the wind direction test value of element N*1, N*2, N*3 are respectively dN*1、dN*2、dN*3, then wind direction test value is calculated
dN*1、dN*2、dN*3Inverse beThe wind direction test value of each main expression body falls
Number and be φ=φ1+φ2+φ3, then prevailing wind direction value d are as follows:
Further, after determining prevailing wind direction value d, yaw control device is again by each member in prevailing wind direction value d and genome
The corresponding wind direction test value of element seeks difference operation, regard the maximum absolute value of difference as θ0Value.Further according to θ0, θ1, θ2, θ3It
Between geometry quantitative relation, determine θ1, θ2, θ3Value.Certainly it above are only and illustrate, be not to unique limit of the invention
It is fixed.
What needs to be explained here is why determining that prevailing wind direction value is because passing through in the present embodiment using the above method
The ratio for calculating the inverse and the sum of the inverse of wind direction test value of each main expression body of the wind direction test value of each main expression body, is used in combination
The wind direction of each main expression body is tested multiplied by this ratio, can expand the accounting of main expression body similar in wind direction test value,
And reduce the accounting of the not similar main expression body of wind direction test value, to improve the accuracy that prevailing wind direction value determines.
It further include step S13, the position according to each wind power generating set in the wind field genome in Fig. 2
It sets and the angle value of each apex angle of the wind field genome, generates the wind field genome.
It further include step S103 in Fig. 1, according to the wind field map, to the target wind-power electricity generation in the wind power plant
Unit carries out yaw control.
Fig. 4 is the flow diagram of the execution method for the step S103 that one embodiment of the invention provides, as shown in figure 4, this
Step S103 may include following sub-step in embodiment:
Step S21, according to the wind field map, determine that target wind power generating set corresponds to the general of each default yaw maneuver
Rate.
Target wind power generating set involved in this embodiment is the wind power generating set of pending yaw control.
By taking wind field map is wind field genome as an example, it is assumed that the yaw maneuver of each wind power generating set is equal in wind power plant
Comprising left drift, right avertence boat, currently three kinds of situations constant to wind direction are kept, then yaw control device is generating wind field gene map
After spectrum, the probability for first having to correspond to target wind power generating set various yaw maneuvers is calculated.As shown in figure 5, Fig. 5 is figure
3 partial enlarged view, number 1,2,3,4 respectively indicates four elements on triangle under Fig. 3 in figure, and Δ s is element 1 and member
The difference of wind speed test value between element 2.Assuming that it is target wind power generating set, element 2, element 3 and element that element 1 is corresponding
4 will participate in the yaw control of element 1, and element 2, element 3 and element 4 are different to the disturbance degree of the yaw decision of element 1, then
When determining that target wind power generating set corresponds to the probability of various yaw maneuvers, first have to be calculated separately according to wind field genome
To the disturbance degree of element 1, method is to calculate separately tangent value according to genome for element 2, element 3, element 4:
Tan 1=(S2-S1) × tan (θ0/2) (19)
Tan 2=(S3-S4) × tan (θ0/2) (20)
Tan 3=(S1-S4) × tan (θ0/2) (21)
Tan 4=tan 3+tan 2 (22)
After calculating the above-mentioned tangent value of acquisition, respectively to the inverted operation of each tangent value, then to the value for taking inverse
It is normalized, the value after normalization is added, obtain and value tan, then removed respectively with tan4, tan3 and tan1
With resulting and value tan after addition, and product calculation is carried out with preset weighted value respectively, obtains each element to the shadow of element 1
Loudness.Wherein, above-mentioned preset weighted value is those skilled in the art's sets itself as needed, is not limited in the present embodiment
It is fixed.This certain example influences the feelings of target wind generating set yaw control by way of example only, in multiple wind power generating sets
In condition, each wind power generating set it is similar with this example to the disturbance degree algorithm of target wind power generating set, it is no longer superfluous herein
It states.
Further, after other wind power generating sets are to the disturbance degree of target wind power generating set in determining wind power plant,
Preferably, it can determine that target wind power generating set corresponds to each default yaw maneuver (i.e. left drift, the right side based on D-S evidence theory
Yaw, keep currently to wind direction) probability.
Specifically, being based on D-S evidence theory in the present embodiment, expression formula can be passed through:
Determine that target wind power generating set corresponds to the probability of each default yaw maneuver；
Wherein, m (a) is the probability that the target wind power generating set executes preset yaw maneuver a, and v is the wind field
The number of element, m in mapi(ai) it is wind power generating set corresponding to i-th of element in the wind field map to the target
The disturbance degree of wind power generating set, i are 1 to the integer between v-2.
Wherein, determine that target wind power generating set corresponds to the original of the probability of each default yaw maneuver according to expression formula (23)
Reason, it is similar with the principle of existing D-S evidence theory to repeat no more herein.
In Fig. 4, further includes step S22, according to the probability, determine that the yaw of the target wind power generating set is dynamic
Make.
It is more than preset threshold value when calculating acquisition target wind power generating set to correspond to the probability of left drift by taking left drift as an example
When, it is determined that the yaw maneuver that target wind-driven generator should execute at this time is left drift.The judgement of other yaw maneuvers is similar,
Which is not described herein again.
It further include step S23, according to the yaw maneuver of the target wind power generating set, to the target wind in Fig. 4
Power generator group carries out yaw control.
The present embodiment is generated by obtaining the wind speed test value and wind direction test value of each wind power generating set in wind power plant
The wind field map of wind power plant, to realize the yaw control to wind power generating set each in wind power plant according to the wind field map of generation
System.Rather than conventionally according to the wind speed test value and wind direction test value of every wind power generating set itself to every
Wind power generating set carries out yaw control.Since embodiment is to send out on the basis of generating wind field map wind-force each in wind power plant
Motor group carries out yaw control, therefore, can be based on wind field map, carry out handle to the wind field situation of wind power plant on the whole
It holds, to eliminate influence of the wake effect to yaw control, improves the efficiency of yaw control and the utilization rate of wind energy.
Fig. 6 is the structural schematic diagram of the yaw control device for the wind power plant that one embodiment of the invention provides, as shown in fig. 6,
Device provided in this embodiment includes:
Module 11 is obtained, for obtaining the wind speed test value and wind direction test value of each wind power generating set in wind power plant；
Generation module 12 generates institute for the wind speed test value and wind direction test value according to each wind power generating set
State the wind field map of wind power plant；
Control module 13, for being carried out to the target wind power generating set in the wind power plant according to the wind field map
Yaw control.
Wherein, the acquisition module 11, comprising:
First acquisition submodule 111, for obtaining each wind power generating set from local data base in preset time range
The air speed value and wind direction value that interior acquisition obtains；
First determines submodule 112, for according to the mapping relations and wind direction value between air speed value and wind speed test value
With the mapping relations between wind direction test value, determine that wind speed of each wind power generating set in the preset time range is surveyed
Examination value and wind direction test value.
Optionally, the acquisition module 11 can also include:
Second acquisition submodule 113 tests acquisition for obtaining each wind power generating set in wind power plant under current time
Wind speed instantaneous value and wind direction instantaneous value obtain and by being filtered to the wind speed instantaneous value and wind direction instantaneous value
The wind speed test value and wind direction test value of each wind power generating set in wind power plant.
Device provided in this embodiment can be used in the method for executing Fig. 1 embodiment, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Fig. 7 is the structural representation of generation module 12 in the yaw control device for the wind power plant that one embodiment of the invention provides
Figure, as shown in fig. 7, generation module 12, comprising:
Second determines submodule 121, for the wind speed test value according to wind power generating set each in the wind power plant, determines
Position of each wind power generating set in wind field genome；
Third determines submodule 122, for the wind direction test value according to wind power generating set each in the wind power plant, determines
The angle value of each apex angle of the wind field genome；
Submodule 123 is generated, for the position according to each wind power generating set in the wind field genome, with
And the angle value of each apex angle of the wind field genome, generate the wind field genome.
Device provided in this embodiment can be used in the method for executing Fig. 2 embodiment, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Fig. 8 is the structural representation of control module 13 in the yaw control device for the wind power plant that one embodiment of the invention provides
Figure, as shown in figure 8, control module 13, comprising:
4th determines submodule 131, for it is each default to determine that target wind power generating set corresponds to according to the wind field map
The probability of yaw maneuver；
5th determines submodule 132, for determining that the yaw of the target wind power generating set is dynamic according to the probability
Make；
Control submodule 133 sends out the target wind-force for the yaw maneuver according to the target wind power generating set
Motor group carries out yaw control.
Wherein, it the 4th determines submodule 131, specifically can be used for:
According to the wind field map, the wind-driven generator other than target wind power generating set described in the wind power plant is determined
Disturbance degree of the group to the target wind power generating set；
According to the wind power generating set pair other than target wind power generating set described in D-S evidence theory and the wind power plant
The disturbance degree of the target wind power generating set determines that the target wind power generating set corresponds to the general of each default yaw maneuver
Rate.
Particularly, it the 4th determines submodule 131, specifically can be also used for:
According to the wind field map, each wind-force other than target wind power generating set described in the wind power plant is determined respectively
The tangent value of wind speed test value between generating set and the target wind power generating set；
According to other than target wind power generating set described in the wind power plant each wind power generating set and the target wind
The tangent value of wind speed test value between power generator group, determines the wind other than target wind power generating set described in the wind power plant
Disturbance degree of the power generator group to the target wind power generating set.
Particularly, it the 4th determines submodule 131, specifically can be also used for:
According to other than target wind power generating set described in the wind power plant each wind power generating set and the target wind
The tangent value of wind speed test value between power generator group determines the reciprocal and value of each tangent value；
According to other than described and value, target wind power generating set described in the wind power plant each wind power generating set and institute
The tangent value of wind speed test value and preset weighted value between target wind power generating set are stated, determines institute in the wind power plant
The wind power generating set other than target wind power generating set is stated to the disturbance degree of the target wind power generating set.
Device provided in this embodiment can be used in the method for executing Fig. 4 embodiment, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Finally, it should be noted that those of ordinary skill in the art will appreciate that whole in above-described embodiment method or
Part process is that relevant hardware can be instructed to complete by computer program, and the program can be stored in a computer
In readable storage medium storing program for executing, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, described to deposit
Storage media can be disk, CD, read-only memory (ROM) or random access memory (RAM) etc..
Each functional unit in the embodiment of the present invention can integrate in a processing module, be also possible to each unit
It is individually physically present, can also be integrated in two or more units in a module.Above-mentioned integrated module both can be with
Using formal implementation of hardware, can also be realized in the form of software function module.If the integrated module is with software
The form of functional module realizes, and when sold or used as an independent product, also can store and computer-readable deposits at one
In storage media.Storage medium mentioned above can be read-only memory, disk or CD etc..
The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although referring to aforementioned each reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified, or equivalent substitution of some or all of the technical features；And
These are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (14)
1. a kind of Yaw control method of wind power plant characterized by comprising
Obtain the wind speed test value and wind direction test value of each wind power generating set in wind power plant；
According to the wind speed test value and wind direction test value of each wind power generating set, the wind field map of the wind power plant is generated；
According to the wind field map, yaw control is carried out to the target wind power generating set in the wind power plant；
The wind speed test value and wind direction test value according to each wind power generating set, generates the wind field figure of the wind power plant
Spectrum, comprising:
According to the wind speed test value and wind direction test value of each wind power generating set, the wind field gene map of the wind power plant is generated
Spectrum；Wherein, the wind field genome is used to indicate the wind speed test value and wind direction of each wind power generating set in current wind field
Test value, and for considering the wind power generating set other than target wind power generating set to the target wind power generating set
Influence under conditions of, determine that target wind power generating set corresponds to the probability of various yaw maneuvers；
The wind speed test value and wind direction test value according to each wind power generating set, generates the wind field base of the wind power plant
Because of map, comprising:
According to the wind speed test value of wind power generating set each in the wind power plant, determine each wind power generating set in wind field base
Because of the position in map；
According to the wind direction test value of wind power generating set each in the wind power plant, each apex angle of the wind field genome is determined
Angle value；
According to each of position of each wind power generating set in the wind field genome and the wind field genome
The angle value of apex angle generates the wind field genome.
2. the method according to claim 1, wherein the wind speed for obtaining each wind power generating set in wind power plant
Test value and wind direction test value, comprising:
Obtain the air speed value and wind direction value that each wind power generating set acquires in preset time range；
It is closed according to the mapping relations between air speed value and wind speed test value and the mapping between wind direction value and wind direction test value
System, determines wind speed test value and wind direction test value of each wind power generating set in the preset time range.
3. the method according to claim 1, wherein the wind speed for obtaining each wind power generating set in wind power plant
Test value and wind direction test value, comprising:
Wind speed instantaneous value and wind direction instantaneous value that each wind power generating set in wind power plant tests acquisition under current time are obtained, and
By being filtered to the wind speed instantaneous value and wind direction instantaneous value, the wind speed of each wind power generating set in wind power plant is obtained
Test value and wind direction test value.
4. the method according to claim 1, wherein described according to the wind field map, in the wind power plant
Target wind power generating set carry out yaw control, comprising:
According to the wind field map, determine that target wind power generating set corresponds to the probability of each default yaw maneuver；
According to the probability, the yaw maneuver of the target wind power generating set is determined；
According to the yaw maneuver of the target wind power generating set, yaw control is carried out to the target wind power generating set.
5. according to the method described in claim 4, determining that target wind-force is sent out it is characterized in that, described according to the wind field map
Motor group corresponds to the probability of each default yaw maneuver, comprising:
According to the wind field map, the wind power generating set pair other than target wind power generating set described in the wind power plant is determined
The disturbance degree of the target wind power generating set；
According to the wind power generating set other than target wind power generating set described in D-S evidence theory and the wind power plant to described
The disturbance degree of target wind power generating set determines that the target wind power generating set corresponds to the probability of each default yaw maneuver.
6. according to the method described in claim 5, determining the wind power plant it is characterized in that, described according to the wind field map
Described in wind power generating set other than target wind power generating set to the disturbance degree of the target wind power generating set, comprising:
According to the wind field map, each wind-power electricity generation other than target wind power generating set described in the wind power plant is determined respectively
The tangent value of wind speed test value between unit and the target wind power generating set；
According to each wind power generating set and target wind-force hair other than target wind power generating set described in the wind power plant
The tangent value of wind speed test value between motor group determines the wind-force hair other than target wind power generating set described in the wind power plant
Disturbance degree of the motor group to the target wind power generating set.
7. according to the method described in claim 6, it is characterized in that, the target wind-power electricity generation according to the wind power plant
The tangent value of wind speed test value between each wind power generating set and the target wind power generating set other than unit, determine described in
Wind power generating set other than target wind power generating set described in wind power plant to the disturbance degree of the target wind power generating set,
Include:
According to each wind power generating set and target wind-force hair other than target wind power generating set described in the wind power plant
The tangent value of wind speed test value between motor group determines the reciprocal and value of each tangent value；
According to each other than target wind power generating set described in reciprocal and the value, the wind power plant of each tangent value
The tangent value and preset weighted value of wind speed test value between wind power generating set and the target wind power generating set, really
Wind power generating set other than target wind power generating set described in the fixed wind power plant is to the target wind power generating set
Disturbance degree.
8. a kind of yaw control device of wind power plant characterized by comprising
Module is obtained, for obtaining the wind speed test value and wind direction test value of each wind power generating set in wind power plant；
Generation module generates the wind-powered electricity generation for the wind speed test value and wind direction test value according to each wind power generating set
The wind field map of field；
Control module, for carrying out yaw control to the target wind power generating set in the wind power plant according to the wind field map
System；
The generation module is generated specifically for the wind speed test value and wind direction test value according to each wind power generating set
The wind field genome of the wind power plant；Wherein, the wind field genome is for indicating each wind-power electricity generation in current wind field
The wind speed test value and wind direction test value of unit, and for considering the wind power generating set other than target wind power generating set
Under conditions of influence to the target wind power generating set, determine that target wind power generating set corresponds to the general of various yaw maneuvers
Rate；
The generation module, comprising:
Second determines submodule, for the wind speed test value according to wind power generating set each in the wind power plant, determines described each
Position of the wind power generating set in wind field genome；
Third determines submodule, for the wind direction test value according to wind power generating set each in the wind power plant, determines the wind
The angle value of each apex angle of field genome；
Submodule is generated, for according to position of each wind power generating set in the wind field genome and described
The angle value of each apex angle of wind field genome generates the wind field genome.
9. yaw control device according to claim 8, which is characterized in that the acquisition module, comprising:
First acquisition submodule, for obtaining the air speed value and wind direction that each wind power generating set acquires in preset time range
Value；
First determines submodule, for according to the mapping relations and wind direction value and wind direction between air speed value and wind speed test value
Mapping relations between test value, determine wind speed test value of each wind power generating set in the preset time range and
Wind direction test value.
10. yaw control device according to claim 8, which is characterized in that the acquisition module, comprising:
Second acquisition submodule tests the wind speed wink of acquisition for obtaining each wind power generating set in wind power plant under current time
Duration and wind direction instantaneous value, and by being filtered to the wind speed instantaneous value and wind direction instantaneous value, it obtains in wind power plant
The wind speed test value and wind direction test value of each wind power generating set.
11. yaw control device according to claim 8, which is characterized in that the control module, comprising:
4th determines submodule, for it is dynamic to determine that target wind power generating set corresponds to each default yaw according to the wind field map
The probability of work；
5th determines submodule, for determining the yaw maneuver of the target wind power generating set according to the probability；
Control submodule, for the yaw maneuver according to the target wind power generating set, to the target wind power generating set
Carry out yaw control.
12. yaw control device according to claim 11, which is characterized in that the described 4th determines submodule, specific to use
In:
According to the wind field map, the wind power generating set pair other than target wind power generating set described in the wind power plant is determined
The disturbance degree of the target wind power generating set；
According to the wind power generating set other than target wind power generating set described in D-S evidence theory and the wind power plant to described
The disturbance degree of target wind power generating set determines that the target wind power generating set corresponds to the probability of each default yaw maneuver.
13. yaw control device according to claim 12, which is characterized in that the described 4th determines submodule, specific to go back
For:
According to the wind field map, each wind-power electricity generation other than target wind power generating set described in the wind power plant is determined respectively
The tangent value of wind speed test value between unit and the target wind power generating set；
According to each wind power generating set and target wind-force hair other than target wind power generating set described in the wind power plant
The tangent value of wind speed test value between motor group determines the wind-force hair other than target wind power generating set described in the wind power plant
Disturbance degree of the motor group to the target wind power generating set.
14. yaw control device according to claim 13, which is characterized in that the described 4th determines submodule, specific to go back
For:
According to each wind power generating set and target wind-force hair other than target wind power generating set described in the wind power plant
The tangent value of wind speed test value between motor group determines the reciprocal and value of each tangent value；
According to each other than target wind power generating set described in reciprocal and the value, the wind power plant of each tangent value
The tangent value and preset weighted value of wind speed test value between wind power generating set and the target wind power generating set, really
Wind power generating set other than target wind power generating set described in the fixed wind power plant is to the target wind power generating set
Disturbance degree.
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| CN108869176A (en) * | 2018-06-28 | 2018-11-23 | 北京金风科创风电设备有限公司 | Wind deviation correction method and device for wind generating set and electronic equipment |
| CN113818997B (en) * | 2020-06-19 | 2023-04-25 | 北京国电思达科技有限公司 | Wind turbine generator wind direction automatic correction method based on big data analysis |
| CN111881572B (en) * | 2020-07-24 | 2022-10-04 | 浙江大学 | Wind power plant cooperative yaw intelligent control method based on multi-objective optimization |
| CN112796940B (en) * | 2021-01-29 | 2022-05-24 | 东方电气风电股份有限公司 | Wind alignment method for wind direction data missing fan |
| CN113309662B (en) * | 2021-06-21 | 2022-08-16 | 许昌许继风电科技有限公司 | Wind power cut-out control method for improving wind energy utilization rate of wind generating set |
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