CN107882680A - A kind of method for controlling number of revolution for wind power generating set - Google Patents
A kind of method for controlling number of revolution for wind power generating set Download PDFInfo
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- CN107882680A CN107882680A CN201710956697.3A CN201710956697A CN107882680A CN 107882680 A CN107882680 A CN 107882680A CN 201710956697 A CN201710956697 A CN 201710956697A CN 107882680 A CN107882680 A CN 107882680A
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- power generating
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 208000033999 Device damage Diseases 0.000 abstract description 2
- 230000006978 adaptation Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001172 regenerating 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
-
- 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
- F05B2270/101—Purpose of the control system to control rotational speed (n)
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
-
- 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
It is an object of the invention to provide a kind of method for controlling number of revolution for wind power generating set, the wind power generating set is operated in Heng Zhuansuqu under section [Wrate, Wrate+ Δ W], and Wrate is rated wind speed, and Δ W is wind speed increment.Method for controlling number of revolution provided by the invention has following three zones：1st, the wind power generating set without blade pitch device effectively realizes wind speed round control on the premise of unit efficiency is not lost；2nd, the wind power generating set with blade pitch device, the blade pitch device action frequency for being not easy to overhaul, safeguard can be greatly reduced, the possibility that blade pitch device damages by mechanical fatigue is reduced, extends the maintenance period of blade pitch device.3rd, adaptation function, according to historical data, adjust automatically parameter, it is allowed to be adapted with system performance.
Description
Technical field
The present invention relates to a kind of rotating speed controlling party for being applicable fixed pitch wind power generating set and pitch-controlled wind-driven generator group
Method, strengthen the collaboration capabilities of wind turbine generator system controller and current transformer, by bus drain charge pulsewidth modulation, realize and wind-force is sent out
The control of group of motors wind speed round.
Background technology
Wind-powered electricity generation is the regenerative resource that resource potential is big, technology is mature on the whole.In recent years, global resources environmental constraints add
Play, climate change become clear day by day, and wind-powered electricity generation is increasingly paid much attention to by countries in the world, and are obtained under the joint efforts of various countries
Fast development.The wind energy resources very abundant that China can develop, under the promotion of national policy measure, by 10 years
Development, the Wind Power Generation Industry in China change, Wind Power Generation Industry to the direction improved quality, reduce cost from the expansion in quantity of extensive style
Into the new stage for stablizing sustainable growth.
For current mainstream model based on variable pitch and variable speed unit, the unit not only realizes the maximum below rated wind speed
Power tracking controls, and improves the wind energy utilization efficiency of unit, can also conveniently realize rated wind speed by adjusting propeller pitch angle
Above output-constant operation.During propeller pitch angle regulation, the bearing that blade is connected with wheel hub needs to bear bigger stress, easily goes out
Existing mechanical fatigue damage.
The content of the invention
The technical problem to be solved in the present invention is：It is obstructed to overregulate propeller pitch angle, turning for wind power generating set is realized well
Speed control.
In order to solve the above-mentioned technical problem, the technical scheme is that providing a kind of turn for wind power generating set
Speed control method, the wind power generating set are operated in Heng Zhuansuqu under section [Wrate, Wrate+ Δ W], and Wrate is specified
Wind speed, Δ W are wind speed increment, it is characterised in that are comprised the following steps：
Step 1, detection wind speed, whether real-time judge wind speed is less than Wrate, if so, then entering step 2, if it is not, then entering
Enter step 3；
Step 2, calculate and it is expected rotating speed Rs under current wind speed corresponding to maximum Cp, wherein, Cp is power coefficient, is leaf
Tip-speed ratio λ function, λ=ω R/V, ω are wind wheel angular speed, i.e. rotating speed, and R is wind wheel radius, and V is wind speed, into step 4；
Whether step 3, real-time judge wind speed are less than Wrate+ Δ W, if, it would be desirable to rotating speed Rs is set as rated speed
Rrate, into step 4, if not, it would be desirable to rotating speed Rs is set as that the minimum according to needed for the rated power that wind speed calculates turns
Speed；
Step 4, calculate adjustment of rotational speed amount Δ Rs, Δ Rs=Rs-R, in formula, R is actual wind speed round, into step 5；
Step 5, judge whether adjustment of rotational speed amount Δ Rs is more than control accuracy a, if so, then being counted according to adjustment of rotational speed amount Δ Rs
Drain charge dutycycle is calculated, if it is not, then return to step 1.
Method for controlling number of revolution provided by the invention has following three zones：1st, the wind power generating set without blade pitch device is not
On the premise of losing unit efficiency, wind speed round control is effectively realized；2nd, the wind power generating set with blade pitch device, Ke Yi great
Big reduction is not easy the blade pitch device action frequency overhauled, safeguarded, reduces the possibility that blade pitch device damages by mechanical fatigue,
Extend the maintenance period of blade pitch device.3rd, adaptation function, according to historical data, adjust automatically parameter is allowed to and system performance
It is adapted.
Relation provided by the invention based between torque and wind speed round, the design method of control wind wheel torque is with as follows
Beneficial effect：
1) have a wide range of application, suitable for all types wind power generating set；
2) control method is simple and reliable easily implements, suitable for the different running status of wind power generating set：Start-up course, wind
Wheel idle running, it is incorporated into the power networks；
3) all measurement process utilize the original component of wind power generating set, without additionally more component, are not required to increase
Hardware cost；
4) it is perfect compatible with wind wheel award setting wind speed round method, it is used together the safety for the system of greatly improving
Property and stability.
Brief description of the drawings
Fig. 1 is Cp and λ graphs of a relation；
Fig. 2 is unit working condition；
Fig. 3 is the flow chart of the present invention.
Embodiment
To become apparent the present invention, hereby with preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
According to wind energy law, the pneumatic torque Tm=0.5 ρ π R of wind energy conversion system output3CTV2, in formula, Tm is the output of wind energy conversion system
Machine torque, R are wind wheel radius, and V is wind speed, and ρ is atmospheric density, and CT is only wind power generating set tip speed ratio λ function, λ
=ω R/V, ω are the angular speed of wind wheel rotation.The mathematical modeling of wind power generating set transmission system is：Tm-Te-B ω g=Jd
ω g/dt, in formula, Te is the electromagnetic torque of generator, and B is the Equivalent Rotational coefficient of viscosity of system, and ω g are generator rotation
Angular speed, J are the equivalent moment of inertia (system performance) of system.It can be seen from above-mentioned relation, wind wheel angular acceleration d=d ω g/
Dt=(Tm-Te-B ω g)/J, the electromagnetic torque Te of appropriate regulator generator, can control wind wheel angular acceleration, that is, control wind wheel
Rotating speed.
The present invention proposes a kind of control method of PWM drain charges, increases the electromagnetic torque of generator as needed.
Wind energy Pwind=(1/2) * Cp* ρ * Acos θ that wind wheel is caught from wind*V3, in formula, Pwind is what wind wheel absorbed
Wind energy, Cp are power coefficient, and ρ is atmospheric density, and A is wind wheel area, and θ is Windward angle, and V is wind speed.Propeller pitch angle is constant
When, wind wheel usage factor Cp is only tip speed ratio λ function, and Cp and λ relations are as shown in Figure 1.
As shown in Fig. 2 unit is operated under the wind speed less than rated wind speed, by the electromagnetic torque of regulator generator, adjust
The rotating speed of wind power generating set is saved, is run with rotating speed corresponding to maximum Cp values；Unit is operated under rated wind speed, with rated speed
Lower rated power operation；Unit is operated under the wind speed more than rated wind speed, by the electromagnetic torque of regulator generator, reduces wind
The rotating speed of power generator group, so as to reduce the tip speed ratio of unit.Unit is set to enter the stall zone of low tip speed ratio, with invariable power
Operation.
With reference to Fig. 3, a kind of method for controlling number of revolution for wind power generating set provided by the invention comprises the following steps, its
In, wind power generating set is operated in Heng Zhuansuqu under section [Wrate, Wrate+ Δ W], and Wrate is rated wind speed, and Δ W is
Wind speed increment：
Step 1, detection wind speed, whether real-time judge wind speed is less than Wrate, if so, then entering step 2, if it is not, then entering
Enter step 3；
Step 2, calculate and it is expected rotating speed Rs under current wind speed corresponding to maximum Cp, wherein, Cp is power coefficient, is leaf
Tip-speed ratio λ function, λ=ω R/V, ω are wind wheel angular speed, i.e. rotating speed, and R is wind wheel radius, and V is wind speed, into step 4；
Whether step 3, real-time judge wind speed are less than Wrate+ Δ W, if, it would be desirable to rotating speed Rs is set as rated speed
Rrate, into step 4, if not, it would be desirable to rotating speed Rs is set as that the minimum according to needed for the rated power that wind speed calculates turns
Speed；
Step 4, calculate adjustment of rotational speed amount Δ Rs, Δ Rs=Rs-R, in formula, R is actual wind speed round, into step 5；
Step 5, judge whether adjustment of rotational speed amount Δ Rs is more than control accuracy a, if so, then being counted according to adjustment of rotational speed amount Δ Rs
Drain charge dutycycle is calculated, if it is not, then return to step 1.
Claims (1)
1. a kind of method for controlling number of revolution for wind power generating set, the wind power generating set is in section [Wrate, Wrate+ Δ
W] under be operated in Heng Zhuansuqu, Wrate is rated wind speed, and Δ W is wind speed increment, it is characterised in that is comprised the following steps：
Step 1, detection wind speed, whether real-time judge wind speed is less than Wrate, if so, then entering step 2, if it is not, then entering step
Rapid 3；
Step 2, calculate and it is expected rotating speed Rs under current wind speed corresponding to maximum Cp, wherein, Cp is power coefficient, is blade tip speed
Function than λ, λ=ω R/V, ω are wind wheel angular speed, i.e. rotating speed, and R is wind wheel radius, and V is wind speed, into step 4；
Whether step 3, real-time judge wind speed are less than Wrate+ Δ W, if, it would be desirable to rotating speed Rs is set as rated speed Rrate,
Into step 4, if not, it would be desirable to rotating speed Rs is set as the minimum speed according to needed for the rated power that wind speed calculates；
Step 4, calculate adjustment of rotational speed amount Δ Rs, Δ Rs=Rs-R, in formula, R is actual wind speed round, into step 5；
Step 5, judge whether adjustment of rotational speed amount Δ Rs is more than control accuracy a, let out if so, then being calculated according to adjustment of rotational speed amount Δ Rs
Lotus dutycycle, if it is not, then return to step 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956697.3A CN107882680B (en) | 2017-10-13 | 2017-10-13 | A kind of method for controlling number of revolution for wind power generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710956697.3A CN107882680B (en) | 2017-10-13 | 2017-10-13 | A kind of method for controlling number of revolution for wind power generating set |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107882680A true CN107882680A (en) | 2018-04-06 |
| CN107882680B CN107882680B (en) | 2019-10-25 |
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|---|---|---|---|
| CN201710956697.3A Active CN107882680B (en) | 2017-10-13 | 2017-10-13 | A kind of method for controlling number of revolution for wind power generating set |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360051A (en) * | 2019-07-16 | 2019-10-22 | 内蒙古工业大学 | One kind is small-sized to determine paddle permanent magnet synchronous wind generator group controller |
| CN111894800A (en) * | 2020-07-16 | 2020-11-06 | 湘电风能有限公司 | Wind driven generator rotating speed control method for improving environmental adaptability |
| CN114458534A (en) * | 2022-01-06 | 2022-05-10 | 华能大理风力发电有限公司 | Method and system for controlling rotating speed of wind turbine generator |
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| CN101603503A (en) * | 2009-07-21 | 2009-12-16 | 南京航空航天大学 | A kind of internal model control method of fixed pitch wind turbine |
| CN102588211A (en) * | 2012-02-29 | 2012-07-18 | 沈阳华人风电科技有限公司 | Model prediction control method and model prediction control system for all working conditions of wind generating set |
| CN103147918A (en) * | 2013-02-28 | 2013-06-12 | 深圳市风发科技发展有限公司 | Control method and control device for vertical-axis wind generating set |
| CN104329225A (en) * | 2014-08-29 | 2015-02-04 | 江苏中航动力控制有限公司 | Wind power generator set power control method |
| CN105649876A (en) * | 2015-12-31 | 2016-06-08 | 北京金风科创风电设备有限公司 | Control method and device of wind generating set |
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| JP2017180151A (en) * | 2016-03-29 | 2017-10-05 | 株式会社日立製作所 | Wind power generator, wind farm, or wind power generator operating method |
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2017
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Patent Citations (7)
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| CN101603503A (en) * | 2009-07-21 | 2009-12-16 | 南京航空航天大学 | A kind of internal model control method of fixed pitch wind turbine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360051A (en) * | 2019-07-16 | 2019-10-22 | 内蒙古工业大学 | One kind is small-sized to determine paddle permanent magnet synchronous wind generator group controller |
| CN111894800A (en) * | 2020-07-16 | 2020-11-06 | 湘电风能有限公司 | Wind driven generator rotating speed control method for improving environmental adaptability |
| CN114458534A (en) * | 2022-01-06 | 2022-05-10 | 华能大理风力发电有限公司 | Method and system for controlling rotating speed of wind turbine generator |
| CN114458534B (en) * | 2022-01-06 | 2023-05-02 | 华能大理风力发电有限公司 | Wind turbine generator rotating speed control method and system |
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| Publication number | Publication date |
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| CN107882680B (en) | 2019-10-25 |
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