CN107882680B - 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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- CN107882680B CN107882680B CN201710956697.3A CN201710956697A CN107882680B CN 107882680 B CN107882680 B CN 107882680B CN 201710956697 A CN201710956697 A CN 201710956697A CN 107882680 B CN107882680 B CN 107882680B
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 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
- 230000006978 adaptation Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- 230000001133 acceleration Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000005611 electricity Effects 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013178 mathematical model Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009466 transformation 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
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The object of the present invention is to provide a kind of method for controlling number of revolution for wind power generating set, it is rated wind speed which, which works at section [Wrate, Wrate+ Δ W] in Heng Zhuansuqu, Wrate, and Δ W is wind speed increment.Method for controlling number of revolution provided by the invention has following three zones: 1, the wind power generating set without blade pitch device is effective to realize wind speed round control under the premise of not losing unit efficiency；2, with the wind power generating set of blade pitch device, the blade pitch device movement frequency that is not easy to overhaul, safeguard can be greatly reduced, a possibility that blade pitch device is damaged because of mechanical fatigue is reduced, extends the maintenance period of blade pitch device.3, adaptation function, according to historical data, adjust automatically parameter is allowed to be adapted with system performance.
Description
Technical field
The present invention relates to a kind of revolving speed controlling parties for being applicable in fixed pitch wind power generating set and pitch-controlled wind-driven generator group
Method enhances the collaboration capabilities of wind turbine generator system controller and current transformer, by bus drain charge pulsewidth modulation, realizes and sends out wind-force
The control of motor group wind speed round.
Background technique
Wind-powered electricity generation is the renewable energy 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, great attention of the wind-powered electricity generation increasingly by countries in the world, and obtain under the joint efforts of various countries
Fast development.The wind energy resources very abundant that China can develop and use, under the promotion of national policy measure, by 10 years
Development, expansion in quantity of the Wind Power Generation Industry in China from extensive style, Xiang Tigao mass, the direction transformation for reducing cost, Wind Power Generation Industry
Into the new stage for stablizing sustainable growth.
For current mainstream model based on variable pitch and variable speed unit, which not only realizes rated wind speed maximum below
Power tracking control, improves the wind energy utilization efficiency of unit, can also conveniently realize rated wind speed by adjusting propeller pitch angle
The above output-constant operation.In propeller pitch angle adjustment process, the bearing that blade is connect with wheel hub needs to bear bigger stress, is easy
Existing mechanical fatigue damage.
Summary of the invention
The technical problem to be solved by the present invention is obstructed overregulate propeller pitch angle, turning for wind power generating set is realized well
Speed control.
In order to solve the above-mentioned technical problem, turn the technical solution of the present invention is to provide a kind of for wind power generating set
Speed control method, it is specified which, which works at section [Wrate, Wrate+ △ W] in Heng Zhuansuqu, Wrate,
Wind speed, △ W are wind speed increment, which comprises the following steps:
Step 1, detection wind speed, whether real-time judge wind speed is less than Wrate, if so, enter step 2, if it is not, then into
Enter step 3；
Step 2 calculates the corresponding expectation revolving speed Rs of maximum Cp under current wind speed, wherein Cp is power coefficient, is leaf
The function of tip-speed ratio λ, λ=ω R/V, ω are wind wheel angular speed, i.e. revolving speed, and R is wind wheel radius, and V is wind speed, enters step 4；
Whether step 3, real-time judge wind speed are less than Wrate+ △ W, if, it would be desirable to revolving speed Rs is set as rated speed
Rrate enters step 4, if not, it would be desirable to revolving speed Rs is set as the minimum according to needed for wind speed calculated rated power and turns
Speed；
Step 4 calculates revolving speed adjustment amount △ Rs, △ Rs=Rs-Rpm, in formula, RpmFor practical wind speed round, enter step
5；
Step 5 judges whether revolving speed adjustment amount △ Rs is greater than control precision a, if so, being counted according to revolving speed adjustment amount △ Rs
Drain charge duty ratio is calculated, if it is not, then return step 1.
Method for controlling number of revolution provided by the invention has following three zones: 1, the wind power generating set without blade pitch device is not
It is effective to realize wind speed round control under the premise of losing unit efficiency；2, with the wind power generating set of blade pitch device, Ke Yi great
Big reduction is not easy the blade pitch device movement frequency overhauled, safeguarded, reduces a possibility that blade pitch device is damaged because of mechanical fatigue,
Extend the maintenance period of blade pitch device.3, adaptation function, according to historical data, adjust automatically parameter is allowed to and system performance
It is adapted.
Relationship provided by the invention based between torque and wind speed round, the design method of control wind wheel torque have as follows
Beneficial effect:
1) have a wide range of application, be suitable for all types wind power generating set；
2) the simple and reliable easy implementation of control method, the operating status different suitable for wind power generating set: start-up course, wind
Wheel idle running is incorporated into the power networks；
3) all measurement process utilize the original component of wind power generating set, without additional more component, are not required to increase
Hardware cost；
4) compatible with wind wheel award setting wind speed round method perfection, it is used together the safety for the system of greatly improving
Property and stability.
Detailed description of the invention
Fig. 1 is Cp and λ relational graph；
Fig. 2 is unit working condition；
Fig. 3 is flow chart of the invention.
Specific embodiment
In order to make the present invention more obvious and understandable, hereby with preferred embodiment, and attached drawing is cooperated 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, R is wind wheel radius, and V is
Wind speed, ρ are atmospheric density, and CT is only the function of wind power generating set tip speed ratio λ, and λ=ω R/V, ω are the angle of wind wheel rotation
Speed.The mathematical model of wind power generating set transmission system are as follows: Tm-Te-B ω g=Jd ω g/dt, in formula, Te is generator
Electromagnetic torque, B are the Equivalent Rotational coefficient of viscosity of system, and ω g is the angular speed of generator rotation, and J is the Equivalent Rotational of system
Inertia (system performance).According to above-mentioned relation it is found that wind wheel angular acceleration=d ω g/dt=(Tm-Te-B ω g)/J, appropriate to adjust
The electromagnetic torque Te for saving generator, can control wind wheel angular acceleration, i.e. control wind speed round.
The present invention proposes a kind of control method of PWM drain charge, increases the electromagnetic torque of generator as needed.
Wind energy Pwind=(1/2) * Cp* ρ * Acos θ * V that wind wheel captures from wind3, 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 the function of tip speed ratio λ, and Cp and λ relationship are as shown in Figure 1.
As shown in Fig. 2, unit work under the wind speed for being less than rated wind speed, by the electromagnetic torque of regulator generator, is adjusted
The revolving speed of wind power generating set is saved, with the corresponding revolving speed operation of maximum Cp value；Unit works under rated wind speed, with rated speed
Lower rated power operation；Unit work, by the electromagnetic torque of regulator generator, reduces wind under the wind speed for being greater than rated wind speed
The revolving speed of power generator group, 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.
In conjunction with Fig. 3, a kind of method for controlling number of revolution for wind power generating set provided by the invention includes the following steps,
In, it is rated wind speed that wind power generating set, which works at section [Wrate, Wrate+ △ W] in Heng Zhuansuqu, Wrate, and △ W is
Wind speed increment:
Step 1, detection wind speed, whether real-time judge wind speed is less than Wrate, if so, enter step 2, if it is not, then into
Enter step 3；
Step 2 calculates the corresponding expectation revolving speed Rs of maximum Cp under current wind speed, wherein Cp is power coefficient, is leaf
The function of tip-speed ratio λ, λ=ω R/V, ω are wind wheel angular speed, i.e. revolving speed, and R is wind wheel radius, and V is wind speed, enters step 4；
Whether step 3, real-time judge wind speed are less than Wrate+ △ W, if, it would be desirable to revolving speed Rs is set as rated speed
Rrate enters step 4, if not, it would be desirable to revolving speed Rs is set as the minimum according to needed for wind speed calculated rated power and turns
Speed；
Step 4 calculates revolving speed adjustment amount △ Rs, △ Rs=Rs-Rpm, in formula, RpmFor practical wind speed round, enter step
5；
Step 5 judges whether revolving speed adjustment amount △ Rs is greater than control precision a, if so, being counted according to revolving speed adjustment amount △ Rs
Drain charge duty ratio is calculated, if it is not, then return 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+ △
W] under to work in Heng Zhuansuqu, Wrate be rated wind speed, △ W is wind speed increment, which comprises the following steps:
Step 1, detection wind speed, whether real-time judge wind speed is less than Wrate, if so, 2 are entered step, if it is not, then entering step
Rapid 3；
Step 2 calculates the corresponding expectation revolving speed Rs of maximum Cp under current wind speed, wherein Cp is power coefficient, is blade tip speed
Function than λ, λ=ω R/V, ω are wind wheel angular speed, i.e. revolving speed, and R is wind wheel radius, and V is wind speed, enters step 4；
Whether step 3, real-time judge wind speed are less than Wrate+ △ W, if, it would be desirable to revolving speed Rs is set as rated speed Rrate,
4 are entered step, if not, it would be desirable to revolving speed Rs is set as the minimum speed according to needed for wind speed calculated rated power；
Step 4 calculates revolving speed adjustment amount △ Rs, △ Rs=Rs-Rpm, in formula, RpmFor practical wind speed round, 5 are entered step；
Step 5 judges whether revolving speed adjustment amount △ Rs is greater than control precision a, if so, being let out according to revolving speed adjustment amount △ Rs calculating
Lotus duty ratio, if it is not, then return 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 |
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| CN201710956697.3A 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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| CN107882680A CN107882680A (en) | 2018-04-06 |
| CN107882680B true CN107882680B (en) | 2019-10-25 |
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Families Citing this family (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 |
| CN111894800B (en) * | 2020-07-16 | 2021-11-16 | 湘电风能有限公司 | Wind driven generator rotating speed control method for improving environmental adaptability |
| 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 |
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 |
| 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 |
| CN106762408A (en) * | 2016-10-10 | 2017-05-31 | 上海致远绿色能源股份有限公司 | A kind of stall control method of fixed pitch wind-driven generator |
| 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 |
-
2017
- 2017-10-13 CN CN201710956697.3A patent/CN107882680B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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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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