CN109026523A - Power adaptive direct drive wind power unit allocation method - Google Patents
Power adaptive direct drive wind power unit allocation method Download PDFInfo
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- CN109026523A CN109026523A CN201810882902.0A CN201810882902A CN109026523A CN 109026523 A CN109026523 A CN 109026523A CN 201810882902 A CN201810882902 A CN 201810882902A CN 109026523 A CN109026523 A CN 109026523A
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000003044 adaptive effect Effects 0.000 title claims abstract description 14
- 241000209094 Oryza Species 0.000 claims description 6
- 235000007164 Oryza sativa Nutrition 0.000 claims description 6
- 235000009566 rice Nutrition 0.000 claims description 6
- 238000010521 absorption reaction Methods 0.000 claims description 5
- 239000013256 coordination polymer Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1033—Power (if explicitly mentioned)
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The present invention provides a kind of power adaptive direct drive wind power unit allocation methods, and for controlling the power of direct drive wind power unit, the power adaptive direct drive wind power unit allocation method comprises determining that the atmospheric density ρ of Wind turbines working environment；Real-time K is calculated according to the atmospheric density ρopt, KoptFor optimal modal gain；According to real-time optimal modal gain KoptIssue adaptable torque value Tm, the torque ω of generator is controlled, makes generator torque control in the corresponding electric torque of optimum tip-speed ratio.The present invention corrects parameter according to local circumstance in real time, and the accurate torque for controlling generator can make generator torque control near the corresponding electric torque of optimum tip-speed ratio, the best wind powerinjected method of wind energy conversion system be realized, to improve the generated energy of unit.
Description
Technical field
The present invention relates to wind power generation fields, and in particular to a kind of Poewr control method of direct drive wind power unit, i.e. function
Rate self-adaptive direct drive wind unit allocation method.
Background technique
As long as wind-driven generator can be obtained the size that energy depends on wind speed and atmospheric density from wind.The hair of blower
Electrical power P=Topt* ω, and Tm=Kopt*ω2=π ρ R5CP/2λopt 3*ω2, TmIt is generator torque, ω is generator speed,
Unit has determined that optimal wind energy absorption coefficient C in the initial design stagep, also determined that optimum tip-speed ratio λopt.Existing
Direct-drive type air-blower control strategy in, the type of blower is by standard air density 1.225kg/m3It is optimal come what is be designed
Modal gain KoptFor definite value (Kopt=135746).But air density change is not accounted in practical applications to blower control
The influence of system can deviate the optimum tip-speed ratio of blower, can not obtain optimal generating efficiency.Even the same wind field, wind
The geographical location of machine, arrangement mode, day-night change, seasonal variations can all have a huge impact atmospheric density.When air is close
When degree changes, corresponding mechanical torque will change, if electromagnetic torque setting value is still controlled with definite value at this time,
Then generator speed ω will reduce or increase, and tip speed ratio will deviate from λ at this timeopt, best C cannot be maintainedp。
In conclusion following problems exist in the prior art: in generator torque calculating process, not accounting for when air-ground
Air tightness variation, generator torque still with setting control, cannot obtain ideal generator power.
Summary of the invention
The present invention provides a kind of power adaptive direct drive wind power unit allocation method, to obtain ideal generator function
Rate.
For this purpose, the present invention proposes a kind of power adaptive direct drive wind power unit allocation method, for controlling direct-drive type wind
The power of motor group, the power adaptive direct drive wind power unit allocation method include:
Determine the atmospheric density ρ of Wind turbines working environment；
Real-time K is calculated according to the atmospheric density ρopt, KoptFor optimal modal gain；
According to real-time optimal modal gain KoptIssue adaptable torque value Tm, the torque ω of generator is controlled, makes to send out
Motor torque is controlled in the corresponding electronic torque of optimum tip-speed ratio.
Further, the calculating of the atmospheric density ρ of the Wind turbines working environment uses following formula:
P=P0(5.3788H2×10-9-1.1975H×10-4+1) (1)
Wherein, P --- the pressure of Wind turbines working environment, unit are pas；
P0--- sea-level atmosphere pressure, value 101325, unit are pas；
The height above sea level in place where H --- Wind turbines, unit is rice；
ρ --- it is the density of Wind turbines working environment, unit kg/m3；
T --- it is the absolute temperature of Wind turbines working environment.
Further, real-time K is calculated according to formula (3)opt,
Kopt=π ρ R5CP/2λopt 3 (3)
π is pi, and R is fan blade radius, and unit is rice, CpIt is optimal wind energy absorption coefficient, λoptIt is best blade tip
Speed ratio.
Further, adaptable torque value T is issued according to torque arithmetic formula (4)m, to control the torque of generator
ω,
Tm=Kopt*ω2 (4)
TmUnit is Newton meter, and the unit of ω is radian per second.
The working principle of the invention is: it is found by the applicant that: in existing direct-drive type air-blower control strategy, generator torque
According to Tm=Kopt*ω2It calculates, and KoptUsing 135746, this definite value is controlled, but KoptIt is closely bound up with atmospheric density.
When atmospheric density changes, if generator torque is still with KoptIt is inclined to will cause generator speed at this time for this setting control
Big or less than normal, tip speed ratio will deviate from λ at this timeopt, best C cannot be maintainedp, optimal generating efficiency is also just not achieved.Due to wind
Machine generating set some is located at sea, and some is located on mountain, and height above sea level is different, and density difference is larger, therefore, applicant's contraposition
It is handled respectively in the wind turbine power generation unit of different operating environment, it is contemplated that the factor of air density change proposes hair
Motor torque calculates calculating mode associated with atmospheric density, is modified to the torque of blower so that it is determined that blower turns
Speed can maintain optimum tip-speed ratio operation always, realize most strong wind in the case that maintenance blower is under different atmospheric density
It can capture, reach maximum power output.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now illustrate the present invention.
The present invention provides a kind of power adaptive direct drive wind power unit allocation method, for controlling direct drive wind power unit
Power, the power adaptive direct drive wind power unit allocation method includes:
Determine the atmospheric density ρ of the actual working environment of Wind turbines；Since the actual working environment of Wind turbines is different,
The atmospheric density ρ of different places is possible to differ larger, and the present invention is close in view of the air of the actual working environment of Wind turbines
Spend the variation of ρ, the K under no longer calculating using standard air densityopt, but the atmospheric density of specific works environment is calculated in real time
ρ can maintain optimum tip-speed ratio operation in the case where realizing maintenance blower under different atmospheric density always；
Real-time K is calculated according to the atmospheric density ρ of the actual working environment of Wind turbinesopt, KoptFor optimal modal gain；
According to real-time optimal modal ratio of gains Kopt, adaptable torque value is issued by controller (for example, computer)
Tm, to control the torque ω of generator, make generator torque control in the corresponding electric torque of optimum tip-speed ratio.
Further, the calculating of the atmospheric density ρ of the Wind turbines working environment, using following formula:
P=P0(5.3788H2×10-9-1.1975H×10-4+1) (1)
Wherein, P --- the pressure of Wind turbines working environment, unit are pas；
P0--- sea-level atmosphere pressure, 101325 units are pas；
The height above sea level in H --- place, unit are rice；
ρ --- it is the density of Wind turbines working environment, unit kg/m3。
Further, real-time K is calculated according to formula (3)opt,
Kopt=π ρ R5CP/2λopt 3 (3)
π is pi, and R is fan blade radius, and unit is rice, CpIt is optimal wind energy absorption coefficient, λoptIt is best blade tip
Speed ratio.Wherein, CpIt is optimal wind energy absorption coefficient, λoptIt is optimum tip-speed ratio when the production of fan blade producer just
Through having determined.
Further, adaptable torque value is issued according to torque arithmetic formula (4), to control the torque of generator
ω,
Tm=Kopt*ω2 (4)
Above-mentioned formula (1)-(4) derive from existing aerodynamic theory deduction, formula (1)-(4) calculating,
It can be completed by controller (for example, computer), PID controller can also be added on this basis, increase power P I and close
The optimal power of ring control function, practical online power and setting to generator is corrected, and is avoided because of external environment, electrically
Online power caused by loss is unstable.
The present invention corrects parameter according to local circumstance in real time, and the accurate torque for controlling generator can make to generate electricity
Machine direct torque realizes the best wind powerinjected method of wind energy conversion system, to mention near the corresponding electric torque of optimum tip-speed ratio
The generated energy of high unit.
The foregoing is merely the schematical specific embodiment of the present invention, the range being not intended to limit the invention.For this
Each component part of invention can be combined with each other under conditions of not conflicting, any those skilled in the art, not depart from this
Made equivalent changes and modifications, should belong to the scope of protection of the invention under the premise of the conceptions and principles of invention.
Claims (4)
1. a kind of power adaptive direct drive wind power unit allocation method, special for controlling the power of direct drive wind power unit
Sign is that the power adaptive direct drive wind power unit allocation method includes:
Determine the atmospheric density ρ of Wind turbines working environment:；
According to the atmospheric density ρ: calculating real-time Kopt, KoptFor optimal modal gain；
According to real-time optimal modal gain KoptIssue adaptable torque value Tm, the torque ω of generator is controlled, generator is made
Direct torque is in the corresponding electronic torque of optimum tip-speed ratio.
2. power adaptive direct drive wind power unit allocation method as described in claim 1, which is characterized in that the wind turbine
Group working environment atmospheric density ρ: calculating use following formula:
P=P0(5.3788H2×10-9-1.1975H×10-4+1) (1)
Wherein, P --- the pressure of Wind turbines working environment, unit are pas；
P0--- sea-level atmosphere pressure, value 101325, unit are pas；
The height above sea level in place where H --- Wind turbines, unit is rice；
ρ: --- it is the density of Wind turbines working environment, unit kg/m3；
T --- it is the absolute temperature of Wind turbines working environment.
3. power adaptive direct drive wind power unit allocation method as claimed in claim 2, which is characterized in that according to formula
(3) real-time K is calculatedopt,
Kopt=π ρ R5CP/2λopt 3 (3)
π is pi, and R is fan blade radius, and unit is rice, CpIt is optimal wind energy absorption coefficient, λoptIt is optimum tip-speed ratio.
4. power adaptive direct drive wind power unit allocation method as claimed in claim 3, which is characterized in that according to torquemeter
It calculates formula (4) and issues adaptable torque value Tm, so that the torque ω of generator is controlled,
Tm=Kopt*ω2 (4)
TmUnit is Newton meter, and the unit of ω is radian per second.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810882902.0A CN109026523A (en) | 2018-08-06 | 2018-08-06 | Power adaptive direct drive wind power unit allocation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810882902.0A CN109026523A (en) | 2018-08-06 | 2018-08-06 | Power adaptive direct drive wind power unit allocation method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111322200A (en) * | 2020-04-03 | 2020-06-23 | 上海电气风电集团股份有限公司 | Control method and control device of wind generating set |
| CN113007012A (en) * | 2019-12-19 | 2021-06-22 | 新疆金风科技股份有限公司 | Torque control coefficient optimizing method and device and wind generating set |
| CN114151276A (en) * | 2021-11-29 | 2022-03-08 | 中国大唐集团未来能源科技创新中心有限公司 | Eccentric semi-submersible type floating wind turbine control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102767473A (en) * | 2012-07-31 | 2012-11-07 | 国电联合动力技术有限公司 | Method, system and device for on-line computation of optimal gain of wind generation set control strategy |
| CN103573550A (en) * | 2012-07-27 | 2014-02-12 | 华锐风电科技(集团)股份有限公司 | Control method and system of wind turbine |
| CN104454381A (en) * | 2014-10-22 | 2015-03-25 | 四川东方电气自动控制工程有限公司 | Method for optimizing power improvement in wind energy capturing process of wind turbines |
| CN104747366A (en) * | 2013-12-26 | 2015-07-01 | 上海电气风电设备有限公司 | Wind electricity generator set control method capable of adapting to air density changes |
| CN104747369A (en) * | 2015-01-27 | 2015-07-01 | 中船重工(重庆)海装风电设备有限公司 | Optimum tip speed ratio control method and device under variable air densities |
| CN105298745A (en) * | 2015-09-25 | 2016-02-03 | 南车株洲电力机车研究所有限公司 | Method for improving generating capacity of wind generation set based on real-time air density change |
-
2018
- 2018-08-06 CN CN201810882902.0A patent/CN109026523A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103573550A (en) * | 2012-07-27 | 2014-02-12 | 华锐风电科技(集团)股份有限公司 | Control method and system of wind turbine |
| CN102767473A (en) * | 2012-07-31 | 2012-11-07 | 国电联合动力技术有限公司 | Method, system and device for on-line computation of optimal gain of wind generation set control strategy |
| CN104747366A (en) * | 2013-12-26 | 2015-07-01 | 上海电气风电设备有限公司 | Wind electricity generator set control method capable of adapting to air density changes |
| CN104454381A (en) * | 2014-10-22 | 2015-03-25 | 四川东方电气自动控制工程有限公司 | Method for optimizing power improvement in wind energy capturing process of wind turbines |
| CN104747369A (en) * | 2015-01-27 | 2015-07-01 | 中船重工(重庆)海装风电设备有限公司 | Optimum tip speed ratio control method and device under variable air densities |
| CN105298745A (en) * | 2015-09-25 | 2016-02-03 | 南车株洲电力机车研究所有限公司 | Method for improving generating capacity of wind generation set based on real-time air density change |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113007012A (en) * | 2019-12-19 | 2021-06-22 | 新疆金风科技股份有限公司 | Torque control coefficient optimizing method and device and wind generating set |
| CN111322200A (en) * | 2020-04-03 | 2020-06-23 | 上海电气风电集团股份有限公司 | Control method and control device of wind generating set |
| CN111322200B (en) * | 2020-04-03 | 2022-03-01 | 上海电气风电集团股份有限公司 | Control method and control device of wind generating set |
| CN114151276A (en) * | 2021-11-29 | 2022-03-08 | 中国大唐集团未来能源科技创新中心有限公司 | Eccentric semi-submersible type floating wind turbine control system |
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Application publication date: 20181218 |