CN106845677A - A kind of Large Scale Offshore Wind Farm site selecting method based on wake effect - Google Patents
A kind of Large Scale Offshore Wind Farm site selecting method based on wake effect Download PDFInfo
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- CN106845677A CN106845677A CN201611169047.6A CN201611169047A CN106845677A CN 106845677 A CN106845677 A CN 106845677A CN 201611169047 A CN201611169047 A CN 201611169047A CN 106845677 A CN106845677 A CN 106845677A
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Abstract
A kind of Large Scale Offshore Wind Farm site selecting method based on wake effect, the method superposition consider wind power plant between and wind power plant itself wake effect, be estimated.Thus more meet with actual conditions, there is more preferable adaptability to the construction of marine wind electric field, and improve addressing Efficiency and accuracy.
Description
Technical field
The present invention relates to wind-powered electricity generation field, the particularly site selecting method of marine wind electric field.
Background technology
Marine wind electric field addressing is the important step of marine wind electric field construction project previous work.Marine wind electric field addressing is led to
The factor for often considering has a restriction conditions such as environmental constraints, marine usage restriction, navigation channel and harbour, and wind power plant itself construction
Condition.The general site selecting method that uses is marine wind electric field topological optimization site selecting method, and expert survey.Both approaches
Obviously the influence between wind power plant unit, especially influence of the wake flow to wind unit operation are considered without emphasis.So that wind
Between electric field and wind power plant itself wake flow it is excessive, have impact on the security of wind power generating set and the generated energy of wind power plant.
The content of the invention
In order to solve the above-mentioned technical problem, the present invention proposes a kind of Large Scale Offshore Wind Farm addressing side of wake flow situation
Method, this method be superimposed on the original basis consider wind power plant between and wind power plant itself wake effect, check original commenting
Valency conclusion and giving is corrected, and methods described comprises the following steps：
A kind of Large Scale Offshore Wind Farm site selecting method based on wake effect, wherein the Large Scale Offshore Wind Farm is including more
Individual wind power plant unit, the site selecting method comprises the following steps：
Step one：The setting of single wind power plant unit；
Step 2：Site selection model is set up for single wind power plant unit；
Step 3：Multiple wind power plant units combine to form the Large Scale Offshore Wind Farm；
Step 4：Based on the site selection model, after judging that the multiple wind power plant unit is combined, each wind power plant unit
Between and single wind power plant unit itself wake flow reasonability, with this check single wind power plant unit capacity set and select
Location correctness, is modified；
Step 5：Determine Large Scale Offshore Wind Farm addressing.
Preferably, the setting of single wind power plant includes determining the wind turbine layout scheme and capacity of single wind power plant；It is wherein true
Determining factor is：Draft single-machine capacity, power curve and the thrust coefficient of wind power generating set, and the wind power plant meteorological number
According to.
Preferably, the site selection model of wind power plant unit is：
In formula：CwakeIt is wake effect, CTIt is thrust coefficient, D0It is preceding exhaust fan impeller diameter, k is attenuation constant, X01For
The distance of two Fans impellers, AoverlapIt is A overlay regions,It is rear exhaust blower wind sweeping area；
Wherein attenuation constant K is 0.04.
Preferably, the combination of the multiple wind power plant unit, including multiple wind power plant units are arranged with optimization and are held
Amount judges, control wake flow in formed wind power plant unit itself and the wind power plant between unit setting range it
Interior, wherein Rule of judgment is maximum wake effect CwakeFor：12%<Cwake<16%.
Preferably, the reasonability for judging wake flow be by control between blower fan arrangement mode, wind power plant unit layout and
The environmental factors such as protection zone, navigation channel, culture zone, and then check site selection model boundary condition；As final result falls into setting range
Within, then terminate judging.
Preferably, if final result does not fall within setting range, single wind power plant unit site scope is adjusted, is checked
Calculate, until final result is fallen within setting range；Minimum spacing L≤3km between wherein adjacent wind power plant unit.
The advantage of the invention is that considering the meteorology of influence offshore wind farm exploitation, the hydrology, geology and functional areas restriction as a whole
Deng comprehensive key element, the offshore wind energy resource lean assessment technology for considering to be influenceed between wind power plant is proposed, make offshore wind speed essence
Benefitization assessment result can be applied in the assessment of Wind Power Generation.
Brief description of the drawings
Fig. 1 is the flow chart of the Large Scale Offshore Wind Farm site selecting method based on wake effect proposed by the present invention.
Specific embodiment
Following embodiments are proposed merely for the purpose of illustration, and these embodiments do not limit protection scope of the present invention.
If all Wind turbines of wind power plant all run in the way of maximal wind-energy capture, upwind unit can be caused to capture wind
Can be excessive, wind speed successively decreases with the wake flow direction of propagation, and the wind speed loss of lower wind direction unit input is larger, it is difficult to realize output of wind electric field
Efficiency is maximized.Therefore, it is necessary to coordinate the wind energy of each unit capture, so that wake flow distribution in regulating wind power, improves unit
Between pneumatic coupling, optimize wind power plant active power output efficiency.
Fig. 1 shows the flow chart of the Large Scale Offshore Wind Farm site selecting method based on wake effect proposed by the present invention.
The method according to the invention, wherein Large Scale Offshore Wind Farm include multiple wind power plant units, the site selecting method bag
Include following steps：
Step one：The setting of single wind power plant unit, collection draft the single-machine capacity of wind power generating set, power curve and
The technical parameters such as thrust coefficient, and wind power plant meteorological data.Based on these data, the blower fan of single wind power plant unit is determined
Arrangement and capacity.
Step 2：Site selection model is set up for single wind power plant unit.The model set up is：
In formula：CwakeIt is wake effect, CTIt is thrust coefficient, D0It is preceding exhaust fan impeller diameter, k is attenuation constant, X01For
The distance of two Fans impellers, AoverlapIt is A overlay regions,It is rear exhaust blower wind sweeping area；
Wherein attenuation constant K is 0.04.
Step 3：Multiple wind power plant units combine to form the Large Scale Offshore Wind Farm.
In general, marine wind electric field unit addressing, it is upward in crosswind by taking larger spacing on prevailling wind down wind
Smaller spacing is taken, and reduces the output loss that wake flow is caused.Preferably, according to the present invention, the combination of multiple wind power plant units, bag
Include and multiple wind power plant units are arranged with optimization and capacity judgement, control formed wind power plant unit itself and the wind
Within setting range, wherein Rule of judgment is maximum wake effect C to wake flow in electric field between unitwakeFor：12%<Cwake<
16%.
Step 4：Based on the site selection model, after judging that the multiple wind power plant unit is combined, each wind power plant unit
Between and single wind power plant unit itself wake flow reasonability, with this check single wind power plant unit capacity set and select
Location correctness, is modified；The reasonability for judging wake flow be by control to be laid out between blower fan arrangement mode, wind power plant unit with
And the environmental factor such as protection zone, navigation channel, culture zone, and then check site selection model boundary condition；As final result falls into setting model
Within enclosing, then terminate judging.The reasonability for judging wake flow be by control to be laid out between blower fan arrangement mode, wind power plant unit with
And the environmental factor such as protection zone, navigation channel, culture zone, and then check site selection model boundary condition；As final result falls into setting model
Within enclosing, then terminate judging.
Step 5：Determine Large Scale Offshore Wind Farm addressing.
If final result does not fall within setting range, single wind power plant unit site scope is adjusted, repeat checking calculation, directly
Fallen within setting range to final result；Minimum spacing L≤3km between wherein adjacent wind power plant unit.
According to technical scheme proposed by the invention, it is contemplated that marine wind electric field wake characteristic, it is proposed that based on wake flow shadow
Loud model；The influence of wake effect is considered, with wake effect and unit output ability as constraints, based on Wind turbines control
Principle processed and wake flow propagation characteristic, set up the model of wind farm siting, and then improve the accuracy of addressing, reasonability and can
Operability.
Above-described embodiment proposed by the invention is only the description of the invention, is not intended as to the scope of the present invention
Limitation.Those skilled in the art can be modified based on described above to the present invention, and these modifications also belong to the present invention and disclose
Content and fall within the scope of protection of the present invention.
Claims (6)
1. a kind of Large Scale Offshore Wind Farm site selecting method based on wake effect, wherein the Large Scale Offshore Wind Farm includes multiple
Wind power plant unit, the site selecting method comprises the following steps：
Step one：The setting of single wind power plant unit；
Step 2：Site selection model is set up for single wind power plant unit；
Step 3：Multiple wind power plant units combine to form the Large Scale Offshore Wind Farm；
Step 4：Based on the site selection model, after judging that the multiple wind power plant unit is combined, between each wind power plant unit
And the reasonability of single wind power plant unit itself wake flow, with this check single wind power plant unit capacity set and addressing just
True property, is modified；
Step 5：Determine Large Scale Offshore Wind Farm addressing.
2. a kind of Large Scale Offshore Wind Farm site selecting method based on wake effect according to claim 1, it is characterised in that
The setting of single wind power plant includes determining the wind turbine layout scheme and capacity of single wind power plant；Wherein determine that factor is：Draft wind
The single-machine capacity of power generator group, power curve and thrust coefficient, and the wind power plant meteorological data.
3. a kind of Large Scale Offshore Wind Farm site selecting method based on wake effect according to claim 1 and 2, its feature exists
It is in the site selection model of wind power plant unit：
In formula：CwakeIt is wake effect, CTIt is thrust coefficient, D0It is preceding exhaust fan impeller diameter, k is attenuation constant, X01It is two
The distance of draught fan impeller, AoverlapIt is A overlay regions,It is rear exhaust blower wind sweeping area；
Wherein attenuation constant K is 0.04.
4. a kind of Large Scale Offshore Wind Farm site selecting method based on wake effect according to claim 4, it is characterised in that
The combination of the multiple wind power plant unit, including multiple wind power plant units are arranged with optimization and capacity judgement, control institute shape
Into wind power plant unit itself and the wind power plant in wake flow between unit within setting range, wherein Rule of judgment is
Maximum wake effect span is：12%<Cwake<16%.
5. a kind of Large Scale Offshore Wind Farm site selecting method based on wake effect according to claim 3 or 4, its feature exists
In the reasonability for judging wake flow be by controlling layout and protection zone, navigation channel between blower fan arrangement mode, wind power plant unit, supporting
The environmental factors such as area are grown, and then checks site selection model boundary condition；As final result is fallen within setting range, then terminate sentencing
It is disconnected.
6. a kind of Large Scale Offshore Wind Farm site selecting method based on wake flow situation according to claim 5, it is characterised in that
If final result does not fall within setting range, single wind power plant unit site scope is adjusted, checking calculation is repeated, until most terminating
Fruit is fallen within setting range；Minimum spacing L≤3km between wherein adjacent wind power plant unit.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237721A (en) * | 2017-05-12 | 2017-10-10 | 中国华电科工集团有限公司 | Wind electric field blower method for arranging and device |
| CN110264002A (en) * | 2019-06-20 | 2019-09-20 | 龙源（北京）风电工程设计咨询有限公司 | Wind power plant microcosmic structure schemes evaluation method based on clustering |
| CN113962114A (en) * | 2021-12-22 | 2022-01-21 | 华中科技大学 | Large-scale offshore wind power cluster fan arrangement optimization method and system |
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| CN110264002A (en) * | 2019-06-20 | 2019-09-20 | 龙源（北京）风电工程设计咨询有限公司 | Wind power plant microcosmic structure schemes evaluation method based on clustering |
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Application publication date: 20170613 |