CN106845737A - A kind of wind farm group entirety generating capacity appraisal procedure - Google Patents
A kind of wind farm group entirety generating capacity appraisal procedure Download PDFInfo
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- CN106845737A CN106845737A CN201510876279.4A CN201510876279A CN106845737A CN 106845737 A CN106845737 A CN 106845737A CN 201510876279 A CN201510876279 A CN 201510876279A CN 106845737 A CN106845737 A CN 106845737A
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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
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Abstract
The invention discloses a kind of wind farm group entirety generating capacity appraisal procedure, comprise the following steps：Blower fan coordinate is set, the latitude and longitude coordinates of blower fan are converted into simple two-dimensional coordinate；Choose the available head wind speed of the wind electric field blower；Consider the coverage of wake effect, judge to whether there is wake effect between upper and lower wind direction blower fan；Analysis wake effect, obtains the wind conditions of whole wind power plant；By the power curve of the wind electric field blower, the overall generating capacity of the wind power plant is obtained；Consider the influence between wind power plant, be calculated wind farm group entirety generating capacity.The present invention can effectively solve, because the factor such as landform, blower fan causes the wind speed analytical error produced during the wind direction generation large change of wind power plant inside, to be provided safeguard to assess whole wind power plant generating capacity, can effectively reduce analytical error.
Description
Technical field
The present invention relates to technical field of power systems, more particularly to a kind of wind farm group entirety generating capacity appraisal procedure.
Background technology
With the development of the mankind, energy problem turns into the major issue of influence human survival quality.Solve energy problem
One main method is to greatly develop clean energy resource, Optimization of Energy Structure.And in new energy, wind energy is very important one
Point.Compared with other new energy, wind energy resources is abundant and worldwide distributed more widely, with very big potentiality to be exploited, and
And with wind turbine manufacture and wind-electricity integration technology it is increasingly mature, wind-power electricity generation also gradually turn into focus of concern.
The strength that the kinetic energy that the mankind can be kept watch using windmill is converted into rotation is pushed to generator and produces electric energy, and method is by passing
Moving axis, generator is sent to by the rotary power of rotor.The wind energy in the whole world is about 2.74 × 109MW, wherein available wind energy
Be 2 × 107MW, the water energy total amount than that can be developed on the earth is also big 10 times, thus new energy research in wind energy in occupation of
Highly important effect.
With the fast development of wind power generation industry, the quantity of wind power plant is more and more, power plant construction and operation work
Also many problems are exposed in journey, although now more and more to this research, but many problems are because impacted factor is more
It is also difficult to be analyzed.In addition when these problems are solved, many measures often before implementation all it cannot be guaranteed that feasibility,
Can only be verified by actual experiment, the high cost cycle is long, relative blindness.
In actual wind power plant work, the wind speed that becomes a mandarin at the blower fan in wind power plant is not necessarily identical, Er Qiejian
The head wind speed for measuring cannot be directly used to analyze exerting oneself for blower fan.Wake effect is to cause the wind of leeward in wind power plant to blower fan
The reason for speed is significantly less than upwind blower fan wind speed, the overall generating capacity assessment to wind power plant brings difficulty.
Equally, the influence on certain generated output is there is also between the nearer wind power plant of relative distance and wind power plant, this
A little influences will bring which is stranded to the assessment of the overall generating capacity of wind farm group.
The influence of generated output between the influence exerted oneself to blower fan and wind power plant that wake effect brings can be processed, is
The key of wind farm group entirety generating capacity assessment result quality.Due to environment apoplexy randomness and wind direction it is uncertain
Property, cause the com-parison and analysis of wake effect difficult；Simultaneously because being difficult to draw more regular influence effect between wind power plant
Really, assessment result is often not fully up to expectations.
All it is fairly simple for the consideration of wind direction in the method for conventional wind farm group entirety generating capacity assessment
, all it is wind direction when will enter the wind direction of wind farm group as wind farm group inside and leave wind power plant.This method is in wind
The effect of very big simplified analysis model is served when the internal wind direction of electric field group is constant or changes little, and also will not be to wind-powered electricity generation
Field mass-sending electric energy force estimation result causes the influence that can not ignore.Meanwhile, the wind speed of whole wind power plant is all by two or three number
What the data of the less anemometer tower of amount were derived, possible bigger error causes the wind speed of wind farm group and actual conditions
In the presence of very big deviation.But in the course of work of actual wind farm group, sometimes because the influence of various factors can cause wind
The inside wind direction of wind power plant and the wind direction for leaving wind power plant significantly change compared with admission wind direction producing ratio in electric field group, and wind speed exists
May be varied widely with anemometer tower data during by each position of wind power plant.So if the above method is reused
The single blower fan of wind power plant and the error of overall generating capacity assessment can be caused larger because of the error analysis of wake effect；Simultaneously
The analysis for also resulting in the impact effect size between wind power plant and wind power plant makes mistake, and causes wind farm group entirety generating capacity
The obvious error of assessment producing ratio.
In sum, in wind farm group entirety generating capacity evaluation process, the influence between wake effect and wind power plant
It is two aspects that can not ignore, it is necessary to consider in the system of analysis them.Whether the method for processing wake effect is applicable
It is also very crucial in current wind power plant, it is necessary to assure wake effect analytical error is in tolerance interval.Between wind power plant
Whether whether correct judgment is also the accurate key factor of the appraisal procedure result for the influence of generated output.
The content of the invention
In view of the drawbacks described above of prior art, it is whole that the technical problems to be solved by the invention are to provide a kind of wind farm group
Body generating capacity appraisal procedure, adds the analysis of wake effect influence in the evaluation process of wind farm group generating capacity, and
Consider the influence between wind power plant, the Evaluation accuracy of wind farm group entirety generating capacity can be greatly improved and reduce error.
To achieve the above object, the invention provides a kind of wind farm group entirety generating capacity appraisal procedure, its feature exists
In comprising the following steps：
Step 1, sets blower fan coordinate, the latitude and longitude coordinates of blower fan is converted into simple two-dimensional coordinate, and make described
Two-dimensional coordinate is in the first quartile of the coordinate system set up；
Step 2, chooses the available head wind speed of the wind electric field blower；
Step 3, it is considered to the coverage of wake effect, judges to whether there is wake effect between upper and lower wind direction blower fan, and
There is blower fan number record of the correspondence in wind power plant that wake effect influences between will be all in a relation table；
Step 4, analyzes wake effect, obtains the wind conditions of whole wind power plant；
Step 5, according to the wind conditions of the whole wind power plant for obtaining, by the power curve of the wind electric field blower, obtains
To the generating capacity of the blower fan, so as to obtain the overall generating capacity of the wind power plant；
Step 6, it is considered to the influence between wind power plant, uses the hair of each wind power plant after being influenceed between analysis wind power plant
Electric energy power, is calculated wind farm group entirety generating capacity.
It is preferred that the positive direction of the x-axis of the two-dimensional coordinate is wind direction from West to East, the positive direction of the y-axis is from south
Northwards wind direction, angle a is and the angle of x-axis positive direction (0-360 °).
It is preferred that the wind electric field blower is distributed as an array, the x-axis of the row of the array and the two-dimensional coordinate
Parallel, the file of the array is parallel with the y-axis of the two-dimensional coordinate.
It is preferred that the blower fan is distributed as 6*6 arrays.
It is preferred that the blower fan head wind speed choosing method is as follows：
If corresponding theoretical power (horse-power) is P0 when the head wind speed is α, the power of actual blower fan is P, the correct scope of power
Parameter is △ P, and the △ P are obtained or be manually set according to historical data analysis；
As (P0-P) ＜ Δ P, it is believed that the blower fan head wind speed at this can be used as the basic number of analysis wind farm wind velocity
According to；When being unsatisfactory for the formula, then it represents that the blower fan data at the coordinate need to be pushed away according to wake effect and basic data
Lead.
It is preferred that as follows with the presence or absence of the method for wake effect between the upper and lower wind direction blower fan of judgement：
If wake flow field angle is θ, coverage distance is H, then can obtain the wake flow model of its lower wind direction of a blower fan
Enclose, upwind blower fan is in 0 (x0, y0) place, a coordinate for blower fan is (x, y), then judge that formula is as follows,
x-x0<H
If in the range of the wake flow, showing that the blower fan specifically influences size according to the distance on wind direction；If model
Enclose interior without other blower fans, then it represents that the wake flow of the blower fan does not influence other blower fans.
It is preferred that the wind conditions of the whole wind power plant are according to wake effect coefficient η and blower fan type and blower fan distance
Coefficient of relationship, anemometer tower data and the effective head air speed data, obtained by wake effect analysis method.
It is preferred that the wake effect analysis method is as follows：
The type and the distance between them in view of blower fan are needed during analysis, different blower fans are for lower wind direction
The wake effect coefficient η's that blower fan at same distance is produced is of different sizes；Identical blower fan for lower wind direction different distance at
The size of the wake effect coefficient η of blower fan is also different；
If being equidistant between blower fan, then it is assumed that the wake effect coefficient η between adjacent blower fan is the same：Assuming that having
4 blower fans are equidistant, respectively blower fan 1, blower fan 2, blower fan 3, blower fan 4 on same distinguished and admirable field wire and on wind direction, and
Equal normal work.Head wind speed v1, v4 of blower fan 1 and blower fan 4 are effective head wind speed, then describedCan then obtain
Wind speed to blower fan 2 and blower fan 3 is respectively：
V2=v1 × η
V3=v1 × η2
Becoming a mandarin at whole wind power plant each blower fan is tried to achieve as described above by known effective head wind speed
Wind speed；
If not being equidistant between blower fan, distance between the wake effect coefficient η and blower fan type and blower fan
Relation is trained by a large amount of historical datas and obtained.
It is preferred that the impact analysis between the wind power plant directly considers that wind upwind electric field is whole to wind power plant to leeward
The influence of body generated output, specific method is as follows：
Wind power plant latitude and longitude coordinates in wind farm group are converted into simple two-dimensional coordinate, and make these two-dimensional coordinates
In the first quartile of the coordinate system set up；
Size is influenceed according to the generating capacity between each wind power plant Distance Judgment wind power plant from each other.
A kind of wind farm group entirety generating capacity appraisal procedure of the invention, using all in the blower fan data for working to wind
Electric field inside wind direction is determined, and is no longer only that, by the wind direction data of anemometer tower, can greatly improve to wind power plant apoplexy
The accuracy of flow field analysis；Mobility status to the wind inside wind power plant have carried out more analysis in detail, can make to wake flow
The analysis of effect relatively acquiescence wind power plant wind direction is that the method in single direction is more accurate；Wind flow field flows through wind in constructing wind power plant
Machine relation table, can quickly understand the relation between blower fan under different wind power plants entirety wind speed.Meanwhile, can be provided for wake effect
Good analysis foundation；Consider in general analysis method be without wind farm group between generating capacity influence.
The present invention provides a method for more accurately analyzing wind power plant inside wind direction for the builder of wind power plant,
The method can be solved effectively because the factor such as landform, blower fan causes the wind produced during the wind direction generation large change of wind power plant inside
Fast analytical error, provides safeguard to assess whole wind power plant generating capacity, can effectively reduce analytical error.
The technique effect of design of the invention, concrete structure and generation is described further below with reference to accompanying drawing, with
It is fully understood from the purpose of the present invention, feature and effect.
Brief description of the drawings
Fig. 1 is that a kind of wind farm group entirety generating capacity appraisal procedure flow of a preferred embodiment of the invention is illustrated
Figure.
Fig. 2 is the blower fan distribution schematic diagram of a preferred embodiment of the invention.
Fig. 3 is the wake effect scope schematic diagram of a preferred embodiment of the invention.
Fig. 4 is the wind farm group inside distribution schematic diagram of a preferred embodiment of the invention.
Specific embodiment
As shown in figure 1, a kind of wind farm group entirety generating capacity appraisal procedure, in the base that wind farm group wind direction flow field is set up
On plinth, the head air speed data according to anemometer tower data and part fan derives becoming a mandarin for each blower fan position of wind power plant
Wind speed.The overall generating energy of wind power plant just can be evaluated using the power curve of these become a mandarin wind speed and all types of blower fans
Power, now without the concern for abandon wind ration the power supply caused by abandon air quantity model.In single wind power plant entirety generating capacity appraisal procedure
On the basis of, the influence size of generated output between analysis wind power plant finally evaluates wind farm group entirety generating capacity.Specific step
It is rapid as described below.
Step 1, set blower fan coordinate, by the latitude and longitude coordinates of blower fan be converted into simple two-dimensional coordinate and make these two
Dimension coordinate is in the first quartile of the coordinate system set up.
Assuming that wind direction is the positive direction of x-axis from West to East, and it is the positive direction of y-axis from south orientation north, angle a is square with x-axis
To angle (0-360 °).
Wind electric field blower distribution represents that the row and file of array are parallel with x-axis with y-axis respectively with an array.Such as Fig. 2
It is shown.
Step 2, chooses the available head wind speed of the wind electric field blower.
A head wind speed can be measured at each blower fan of wind power plant, but when being analyzed to wind power plant entirety wind speed
There are some head wind speed because the inaccurate of its can not use, needed to be selected in wind power plant before wind speed is analyzed
Take available head wind speed.
Head wind speed has a corresponding relation with power of fan, if corresponding theoretical power (horse-power) when head wind speed is α
It is P0, the power of actual blower fan is P, the correct range parameter of power is obtained or artificially for △ P, △ P according to historical data analysis
Setting.These three parameters of blower fan are used to judge whether the head wind speed of the blower fan is effective.
Whether the head wind speed of somewhere blower fan can be as follows as the decision method of the basic data of analysis wind farm wind velocity：
As (P0-P) ＜ Δ P, it is believed that the blower fan head wind speed at this can be used as the basic number of analysis wind farm wind velocity
According to；When being unsatisfactory for the formula, then it represents that the blower fan data at the coordinate need to be pushed away according to wake effect and basic data
Lead.
Step 3, it is considered to the coverage of wake effect, judges to whether there is wake effect between upper and lower wind direction blower fan, and
There is blower fan number record of the correspondence in wind power plant that wake effect influences between will be all in a relation table.
On the basis of the wind direction flow field that wind power plant is determined, the wake effect between each blower fan in wind power plant can be entered
Row analysis, it is necessary first to which judgement is whether the upward blower fan of leeward is influenceed by wake effect.This just needs to consider that wake flow is imitated
The coverage answered, correctly judges to whether there is wake effect between upper and lower wind direction blower fan.
If wake flow field angle is θ, coverage distance is H, then can obtain the wake flow model of its lower wind direction of a blower fan
Enclose, as shown in Figure 3.
In Fig. 3 dotted line parallel to upwind blower fan wind direction, upwind blower fan be in Fig. 3 at 0 (set coordinate as (x0,
Y0), whether within the range the blower fan of lower wind direction is judged, if in the range of, showing that its is specific according to the distance on wind direction
Influence size；If there is no other blower fans in scope, then it represents that the wake flow of the blower fan does not influence other blower fans.The formula of judgement is such as
Shown in following formula 1 and formula 2, if a coordinate for blower fan is (x, y)：
... formula 1
x-x0<H ... formulas 2
On the basis of wake effect coverage, an internal presence of record can be obtained to blower fan analysis in wind power plant
The table of wake effect situation, the table have recorded it is all between have wake effect influence blower fan the corresponding volume in wind power plant
Number.
Step 4, analyzes wake effect, obtains the wind conditions of whole wind power plant.
The wind speed that becomes a mandarin at each blower fan position of overall wind power plant can progressively be derived according to effective head wind speed.It is false
It is equidistant, respectively blower fan 1, blower fan 2, blower fan 3, blower fan on same distinguished and admirable field wire and on wind direction to be provided with 4 blower fans
4, and normal work.Head wind speed v1, v4 of blower fan 1 and blower fan 4 are effective head wind speed.Because being between waiting between blower fan
Away from, it is believed that the wake effect coefficient η between adjacent blower fan is the same, it is,
... formula 3
Just the wind speed at blower fan 2 and blower fan 3 can be obtained to be respectively
V2=v1 × η ... formulas 4
V3=v1 × η2... formula 5
During the exerting oneself of wind power plant, different blower fans are for wake effect that the blower fan at lower wind direction same distance is produced
Coefficient η's is of different sizes；Size of the identical blower fan for the wake effect coefficient η of the blower fan at lower wind direction different distance is not yet
Together.So need to consider the type and the distance between them of blower fan during analysis, according to above-mentioned method with regard to energy
The wind speed that becomes a mandarin at whole wind power plant each blower fan is tried to achieve by known effective head wind speed.
When distance of multiple blower fans on wind direction is not equidistant, because wake effect coefficient is not linear,
Can not be analyzed by above-mentioned method again.So, need for facing in most of analysis process is such case, at this moment
It is accomplished by studying the relation of sea land distribution rate and distance.With the increasing of distance, wake effect is imitated to leeward to the wake flow of blower fan
Should be gradually reduced.
Between blower fan wake effect for leeward to influence coefficient η and the blower fan type of blower fan wind speed and the spacing of blower fan
From relation be obtained by needing the certain training burden by a large amount of historical datas.There are wake effect coefficient η and blower fan
After the relation of type and blower fan distance, just can pass through these empirical coefficients, anemometer tower data and effective head air speed data
And the wind conditions of whole wind power plant are obtained by above-mentioned wake effect analysis method.
Step 5, according to the wind conditions of whole wind power plant, by the power curve of blower fan, obtains the generating of all blower fans
Ability, so as to obtain the overall generating capacity of wind power plant.
Step 6, it is considered to the influence between wind power plant, uses the hair of each wind power plant after being influenceed between analysis wind power plant
Electric energy power, is calculated wind farm group entirety generating capacity.
When wind farm group entirety generating capacity is analyzed, in addition it is also necessary to be not simply in view of the influence between wind power plant
Using the generating capacity of each wind power plant direct solution wind farm group.
Influence between analysis wind power plant can not be analyzed as single wind power plant inside again, it is impossible to analyze it to wind speed
Power influence is analyzed again after influence, because the air speed influence between wind power plant is calculated, and especially difficult and error is larger,
Need directly to consider wind upwind electric field to influence from leeward to the overall generated output of wind power plant.
Wind power plant latitude and longitude coordinates in wind farm group are converted into simple two-dimensional coordinate and make these two-dimensional coordinates
In the first quartile of the coordinate system set up.Assuming that the wind power plant situation in wind farm group is as shown in figure 3, work as wind farm group
Overall substantially wind direction is southwest, then because wind power plant 1 is closer to the distance with wind power plant 5 with wind power plant 2, wind power plant 2, then can obtain
Wind power plant 1 has certain influence on the generating capacity of wind power plant 2, and wind power plant 2 has certain influence on the generating capacity of wind power plant 5.Together
Sample, it is assumed that wind direction is due west direction, if then wind power plant 1 and wind power plant 4, wind power plant 3 and wind power plant 5 are within influence distance,
Wind power plant 1 can be obtained certain influence on the generating capacity of wind power plant 4, and wind power plant 3 has one to be fixed to the generating capacity of wind power plant 5
Ring.
Generating capacity influence size and critical influence distance between wind power plant are according to passing historical data analysis
And obtain.
After impact effect between having analyzed wind power plant, each wind power plant after being influenceed between analysis wind power plant is used
Generating capacity can just be calculated wind farm group entirety generating capacity.
The present invention provides a method for more accurately analyzing wind power plant inside wind direction for the builder of wind power plant,
The method can be solved effectively because the factor such as landform, blower fan causes the wind produced during the wind direction generation large change of wind power plant inside
Fast analytical error, provides safeguard to assess whole wind power plant generating capacity, can effectively reduce analytical error.
Preferred embodiment of the invention described in detail above.It should be appreciated that the ordinary skill of this area is without wound
The property made work just can make many modifications and variations with design of the invention.Therefore, all technical staff in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be in the protection domain being defined in the patent claims.
Claims (9)
1. a kind of wind farm group entirety generating capacity appraisal procedure, it is characterised in that comprise the following steps：
Step 1, sets blower fan coordinate, and the latitude and longitude coordinates of blower fan are converted into simple two-dimensional coordinate and the two dimension is sat
Mark is in the first quartile of the coordinate system set up；
Step 2, chooses the available head wind speed of the wind electric field blower；
Step 3, it is considered to the coverage of wake effect, judges with the presence or absence of wake effect between upper and lower wind direction blower fan, and by institute
There is blower fan number record of the correspondence in wind power plant that wake effect influences between having in a relation table；
Step 4, analyzes wake effect, obtains the wind conditions of whole wind power plant；
Step 5, according to the wind conditions of the whole wind power plant for obtaining, by the power curve of the blower fan, obtains the blower fan
Generating capacity, so as to obtain the overall generating capacity of the wind power plant；
Step 6, it is considered to the influence between wind power plant, uses the generating energy of each wind power plant after being influenceed between analysis wind power plant
Power, is calculated wind farm group entirety generating capacity.
2. wind farm group as claimed in claim 1 entirety generating capacity appraisal procedure, it is characterised in that the two-dimensional coordinate
The positive direction of x-axis is wind direction from West to East, the positive direction of the y-axis be from south orientation north wind to.
3. wind farm group as claimed in claim 2 entirety generating capacity appraisal procedure, it is characterised in that the wind electric field blower
An array is distributed as, the row of the array is parallel with the x-axis of the two-dimensional coordinate, the file of the array and the two dimension
The y-axis of coordinate is parallel.
4. wind farm group as claimed in claim 3 entirety generating capacity appraisal procedure, it is characterised in that the blower fan is distributed as
6*6 arrays.
5. wind farm group as claimed in claim 1 entirety generating capacity appraisal procedure, it is characterised in that the blower fan head wind
Fast choosing method is as follows：
If corresponding theoretical power (horse-power) is P0 when the head wind speed is α, the power of actual blower fan is P, the correct range parameter of power
It is △ P, the △ P are obtained or be manually set according to historical data analysis；As (P0-P) ＜ Δ P, it is believed that the wind at this
Machine head wind speed can be used as the basic data of analysis wind farm wind velocity；When being unsatisfactory for the formula, then it represents that the blower fan at the coordinate
Data need to be derived according to wake effect and basic data.
6. wind farm group as claimed in claim 3 entirety generating capacity appraisal procedure, it is characterised in that leeward in the judgement
It is as follows to the method between blower fan with the presence or absence of wake effect：
If wake flow field angle is θ, coverage distance is H, then can obtain the wake flow scope of its lower wind direction of a blower fan, on
Wind direction blower fan is in 0 (x0, y0) place, and a coordinate for blower fan is (x, y), then judge that formula is as follows：
x-x0<H
If in the range of the wake flow, showing that the blower fan specifically influences size according to the distance on wind direction；If in scope
Without other blower fans, then it represents that the wake flow of the blower fan does not influence other blower fans；To all blower fan analyses in the wind power plant
Obtain an internal table that there is wake effect situation of record, the table have recorded it is all between there is wake effect to influence blower fan
Numbering of the correspondence in wind power plant.
7. wind farm group as claimed in claim 6 entirety generating capacity appraisal procedure, it is characterised in that the whole wind power plant
Wind conditions are according to the coefficient of relationship of wake effect coefficient η and blower fan type and blower fan distance, anemometer tower data and described have
The head air speed data of effect, is obtained by wake effect analysis method.
8. wind farm group as claimed in claim 7 entirety generating capacity appraisal procedure, it is characterised in that the wake effect point
Analysis method is as follows：The type and the distance between them in view of blower fan, different blower fans pair are needed during analysis
The wake effect coefficient η's that blower fan at lower wind direction same distance is produced is of different sizes；Identical blower fan is for lower wind direction
The size of the wake effect coefficient η of the blower fan at different distance is also different；
If being equidistant between blower fan, then it is assumed that the wake effect coefficient η between adjacent blower fan is the same：Assuming that there is 4
Blower fan is equidistant, respectively blower fan 1, blower fan 2, blower fan 3, blower fan 4 on same distinguished and admirable field wire and on wind direction, and just
Often work.Head wind speed v1, v4 of blower fan 1 and blower fan 4 are effective head wind speed, then describedThen can obtain wind
Wind speed at machine 2 and blower fan 3 is respectively：
V2=v1 × η
V3=v1 × η2
The wind speed that becomes a mandarin at whole wind power plant each blower fan is tried to achieve as described above by known effective head wind speed；
If not being equidistant between the blower fan, distance between the wake effect coefficient η and blower fan type and blower fan
Relation is trained by a large amount of historical datas and obtained.
9. wind farm group as claimed in claim 1 entirety generating capacity appraisal procedure, it is characterised in that between the wind power plant
Impact analysis directly consider wind upwind electric field to leeward to wind power plant entirety generated output influence, specific method is such as
Under：
Wind power plant latitude and longitude coordinates in wind farm group are converted into simple two-dimensional coordinate, and these two-dimensional coordinates is existed
In the first quartile of the coordinate system set up；
Size is influenceed according to the generating capacity between each wind power plant Distance Judgment wind power plant from each other.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110555540A (en) * | 2018-05-31 | 2019-12-10 | 北京金风科创风电设备有限公司 | Method, device and system for evaluating generating capacity of wind power plant |
| CN111091298A (en) * | 2019-12-20 | 2020-05-01 | 华北电力大学 | Wind power plant flow field coupling characteristic evaluation and intelligent grouping method and system |
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