CN106194580A - A kind of thrust abatement control algolithm of wind power generating set - Google Patents
A kind of thrust abatement control algolithm of wind power generating set Download PDFInfo
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- CN106194580A CN106194580A CN201610557116.4A CN201610557116A CN106194580A CN 106194580 A CN106194580 A CN 106194580A CN 201610557116 A CN201610557116 A CN 201610557116A CN 106194580 A CN106194580 A CN 106194580A
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- 230000001133 acceleration Effects 0.000 claims abstract description 39
- 238000005259 measurement Methods 0.000 claims abstract description 5
- 230000005611 electricity Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 238000011217 control strategy Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000005728 strengthening Methods 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
- F05B2260/00—Function
- F05B2260/70—Adjusting of angle of incidence or attack of rotating blades
-
- 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
- F05B2270/20—Purpose of the control system to optimise the performance of a machine
-
- 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
- F05B2270/328—Blade pitch angle
-
- 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
- F05B2270/334—Vibration measurements
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- 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 invention discloses the thrust abatement control algolithm of a kind of wind power generating set, first, the cabin acceleration of wind power generating set is measured in real time by sensor, then the cabin acceleration obtained according to measurement obtains corresponding minimum propeller pitch angle by look-up table, then this minimum pitch angle value is input to the pitch control device of wind power generating set, the minimum pitch angle value set with pitch control device is made comparisons, take the new minimum propeller pitch angle limit value that wherein maximum is controller, namely by the way of change controller minimum propeller pitch angle limit value in real time, change thrust suffered by unit, thus realize wind power generating set load-optimised control based on cabin acceleration.The control algolithm of the present invention can effectively reduce the wind wheel thrust of unit, thus reduces blade, wheel hub and pylon load, the comprehensive performance improving blower fan, and therefore, the control algolithm of the present invention is widely used prospect.
Description
Technical field
The present invention relates to the technical field of Load Control in Wind Turbine, refer in particular to pushing away of a kind of wind power generating set
Power abatement control algolithm.
Background technology
Along with development and the demand in market of wind generating technology, wind-driven generator pool-size is increasing, and blade is more
The longest, and blower fan often operates in the most severe external environment condition, it is increasing that this results in rack load, to machine
Running of group constitutes the biggest potential safety hazard, is negatively affected to the economic benefit of owner.
For rack load problems of too, occur in that a lot of solution at present, wherein common are following two scheme:
One, strengthen unit parts and improve unit safety performance;
Two, Optimal Control Strategy optimization, carries out unit load shedding control.
Improve unit safety performance by strengthening unit parts, i.e. increase the size of unit parts or use performance instead more
Good material, this will certainly increase unit weight and cost, thus cause the increase of wind power generating set degree electricity cost, reduces
Competitiveness.So scheme two is current this field common method and study hotspot.The load shedding control strategy used at present has Fine
Pitch schedule, Dynamic Fine pitch schedule, Dynamic thrust limiting etc., respectively with machine
Group air gap power, propeller pitch angle and generator speed acceleration are as the input quantity of controller, and it is right to be calculated by lookup table mode
The minimum propeller pitch angle setting value answered, i.e. reduces the thrust of Wind turbines, thus reduces column foot, leaf by increasing minimum propeller pitch angle
Extreme and the fatigue load of sheet root.
In the conventional operation region of wind energy conversion system, in the case of tip speed ratio is certain, thrust coefficient Ct can be along with blade
The increase of pitch angle beta and be gradually reduced, above method is all based on this principle, is reduced by regulation propeller pitch angle setting value size
The mode of thrust suffered by unit, thus reduce rack load, but the weak point of yet suffering from, wherein Fine pitch
There is the problem that loss generated energy is bigger in schedule strategy, Dynamic Fine pitch schedule strategy is only specified
More than wind speed working, Dynamic thrust limiting strategy is just for some limiting condition.
Summary of the invention
It is an object of the invention to the shortcoming overcoming prior art with not enough, it is provided that the thrust of a kind of wind power generating set disappears
Down control algorithm, can reduce wind wheel thrust by this algorithm, it is achieved the optimal control of load, reduces fan design cost.
For achieving the above object, technical scheme provided by the present invention is: the thrust abatement control of a kind of wind power generating set
Algorithm processed, first, measures the cabin acceleration of wind power generating set, the cabin then obtained according to measurement in real time by sensor
Acceleration obtains corresponding minimum propeller pitch angle by look-up table, then this minimum pitch angle value is input to wind power generating set
Pitch control device, the minimum pitch angle value set with pitch control device makes comparisons, take wherein maximum be controller new
Little propeller pitch angle limit value, namely changes by the way of change controller minimum propeller pitch angle limit value in real time and pushes away suffered by unit
Power, thus realize wind power generating set load-optimised control based on cabin acceleration;It comprises the following steps:
1) cabin acceleration is measured
Being provided with acceleration transducer on the cabin support of wind power generating set, this acceleration transducer utilizes himself
Mechanical vibration amount is converted into electricity by operation principle, then measures electricity, changes so that it is become acceleration signal output
To generator set controller;
2) computation of table lookup minimum propeller pitch angle
According to the service data of wind power generating set, set up cabin acceleration minimum propeller pitch angle inquiry table;Then basis
The cabin acceleration signal measured, is calculated corresponding minimum propeller pitch angle by the inquiry table set;Finally will table look-up
To minimum propeller pitch angle be input to pitch control device;
3) pitch control device obtains minimum propeller pitch angle limit value
Pitch control device is by the minimum pitch angle value of minimum propeller pitch angle based on cabin acceleration Yu controller original start
Make comparisons, take wherein maximum and export to becoming oar executor, namely as the minimum propeller pitch angle limit value that pitch control device is new
Thrust suffered by unit is changed by the way of change controller minimum propeller pitch angle limit value in real time;
4) become oar executor and regulate blade pitch angle
The oar executor that becomes of wind power generating set instructs regulation blade pitch angle according to the change oar that pitch control device sends, from
And realize wind power generating set load-optimised control based on cabin acceleration.
The present invention compared with prior art, has the advantage that and beneficial effect:
1, by the simulated effect in 1.5MW wind power generating set, the air-blower control that inventive algorithm is more conventional
Calculation method can reduce 5%-12% in fatigue load, can reduce 4%-10% in ultimate load.
2, at the normal power generation operation interval of wind power generating set, as long as cabin acceleration exceedes limit value, the present invention calculates
Method will work, and optimizes blower fan load, the thrust load shedding control algolithm width that working range is more traditional.
3, inventive algorithm is without increasing unit equipment, only need to increase corresponding functional module in control algolithm, with regard to energy
Realize load shedding control, thus cost-effective, improve unit competitiveness.
4, inventive algorithm has the strongest theoretical foundation, it is easy to accepted by person skilled, changes subsequent control optimization
Enter and lay the foundation with plant maintenance.
Accompanying drawing explanation
Fig. 1 is the control principle drawing of control algolithm of the present invention.
Fig. 2 is the FB(flow block) of control algolithm of the present invention.
Fig. 3 is the resultant bending moment simulated effect comparison diagram under a certain limiting condition rotary hub coordinate system.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
As it is shown in figure 1, the thrust abatement control algolithm of the wind power generating set described in the present embodiment, mainly for current wind
The problem that power generator group load is excessive, on the basis of conventional control strategy, adds and adds based on wind generating set engine room
The module of the load shedding control strategy of speed, specifically: first, the cabin being measured wind power generating set by sensor in real time is accelerated
Degree, then obtains corresponding minimum propeller pitch angle by look-up table, then by this minimum oar according to the cabin acceleration that measurement obtains
Elongation value is input to the pitch control device of wind power generating set, and the minimum pitch angle value set with pitch control device is made comparisons, and takes
Wherein maximum is the new minimum propeller pitch angle limit value of controller, is namely limited by change controller minimum propeller pitch angle in real time
The mode of definite value changes thrust suffered by unit, thus realizes wind power generating set load-optimised control based on cabin acceleration
System.
As in figure 2 it is shown, the thrust abatement control algolithm that the present embodiment is above-mentioned, specifically include following steps:
1) cabin acceleration is measured
Being provided with acceleration transducer on the cabin support of wind power generating set, this acceleration transducer utilizes himself
Mechanical vibration amount is converted into electricity by operation principle (such as piezoelectric effect, magnetoelectric induction etc.), then measures electricity, turns
Change so that it is become acceleration signal and export to generator set controller.
2) computation of table lookup minimum propeller pitch angle
According to the service data of wind power generating set, set up cabin acceleration minimum propeller pitch angle inquiry table;Then basis
The cabin acceleration signal measured, is calculated corresponding minimum propeller pitch angle by the inquiry table set;Finally will table look-up
To minimum propeller pitch angle be input to pitch control device.
3) pitch control device obtains minimum propeller pitch angle limit value
Pitch control device is by the minimum pitch angle value of minimum propeller pitch angle based on cabin acceleration Yu controller original start
Make comparisons, take wherein maximum and export to becoming oar executor, namely as the minimum propeller pitch angle limit value that pitch control device is new
Thrust suffered by unit is changed by the way of change controller minimum propeller pitch angle limit value in real time.
4) become oar executor and regulate blade pitch angle
The oar executor that becomes of wind power generating set instructs regulation blade pitch angle according to the change oar that pitch control device sends, from
And realize wind power generating set load-optimised control based on cabin acceleration.
The control algolithm of the present invention is feedback control based on wind turbine cabin acceleration, compared to traditional thrust fall
Carry control strategy, have load shedding effect substantially, generated energy loss is little, working range width, reliability high, low cost and other advantages, tool
Body is as follows:
One, by simulated effect in 1.5MW wind power generating set, the wind that the control algolithm of the present invention is more conventional
Machine controls calculation method can reduce 5%-12% in fatigue load, and can reduce 4%-10%, Fig. 3 in ultimate load is a certain pole
Resultant bending moment simulated effect comparison diagram under limit operating mode rotary hub coordinate system.
Two, at the normal power generation operation interval of wind power generating set, as long as cabin acceleration exceedes limit value, the present invention's
Control algolithm will work, and optimizes blower fan load, the thrust load shedding control algolithm width that working range is more traditional.
Three, the control algolithm of the present invention is without increasing unit equipment, only need to increase corresponding function mould in control algolithm
Block, can be achieved with load shedding control, thus cost-effective, improves unit competitiveness.
Four, the control algolithm of the present invention has the strongest theoretical foundation, it is easy to accepted by person skilled, to subsequent control
Optimal improvements and plant maintenance lay the foundation.
In sum, the control algolithm of the present invention can effectively reduce the wind wheel thrust of unit, thus reduces blade, wheel hub
With pylon load, the comprehensive performance improving blower fan, therefore, the control algolithm of the present invention is widely used prospect, value
Must promote.
The examples of implementation of the above are only the preferred embodiments of the invention, not limit the enforcement model of the present invention with this
Enclose, therefore the change that all shapes according to the present invention, principle are made, all should contain within the scope of the present invention.
Claims (1)
1. the thrust abatement control algolithm of a wind power generating set, it is characterised in that: first, measured wind in real time by sensor
The cabin acceleration of power generator group, then obtains corresponding minimum oar according to the cabin acceleration that measurement obtains by look-up table
Elongation, is then input to this minimum pitch angle value the pitch control device of wind power generating set, sets with pitch control device
Little pitch angle value is made comparisons, and takes the new minimum propeller pitch angle limit value that wherein maximum is controller, namely by the most more
Change the mode of controller minimum propeller pitch angle limit value to change thrust suffered by unit, thus realize wind power generating set based on cabin
The load-optimised control of acceleration;It comprises the following steps:
1) cabin acceleration is measured
Being provided with acceleration transducer on the cabin support of wind power generating set, this acceleration transducer utilizes the work of himself
Mechanical vibration amount is converted into electricity by principle, then measures electricity, changes so that it is becomes acceleration signal and exports to machine
Group controller;
2) computation of table lookup minimum propeller pitch angle
According to the service data of wind power generating set, set up cabin acceleration minimum propeller pitch angle inquiry table;Then according to measurement
Cabin acceleration signal, be calculated corresponding minimum propeller pitch angle by the inquiry table set;Finally obtain tabling look-up
Minimum propeller pitch angle is input to pitch control device;
3) pitch control device obtains minimum propeller pitch angle limit value
The minimum pitch angle value of minimum propeller pitch angle based on cabin acceleration with controller original start is made to compare by pitch control device
Relatively, take wherein maximum and export to becoming oar executor as the minimum propeller pitch angle limit value that pitch control device is new, namely pass through
The mode of change controller minimum propeller pitch angle limit value changes thrust suffered by unit in real time;
4) become oar executor and regulate blade pitch angle
The oar executor that becomes of wind power generating set instructs regulation blade pitch angle according to the change oar that pitch control device sends, thus real
Existing wind power generating set load-optimised control based on cabin acceleration.
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Cited By (5)
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WO2019234035A1 (en) | 2018-06-08 | 2019-12-12 | Wobben Properties Gmbh | Method for controlling a wind turbine, wind turbine, and wind park |
CN111396249A (en) * | 2020-03-31 | 2020-07-10 | 新疆金风科技股份有限公司 | Method and device for reducing tower load under gust wind condition |
CN112628070A (en) * | 2020-12-18 | 2021-04-09 | 明阳智慧能源集团股份公司 | Method and module for controlling pitching resistance increasing of floating platform of offshore floating type wind turbine generator |
CN113007013A (en) * | 2019-12-20 | 2021-06-22 | 新疆金风科技股份有限公司 | Torsion load control method, device and system and wind generating set |
CN113982863A (en) * | 2021-11-19 | 2022-01-28 | 中车株洲电力机车研究所有限公司 | Method and system for monitoring unit turbulence and load based on cabin acceleration |
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Address after: 528437 Guangdong torch hi tech Industrial Development Zone, Torch Road, No. 22, Ming Yang Industrial Park, Zhongshan Applicant after: Ming Yang wisdom Energy Group AG Address before: 528437 Guangdong torch hi tech Industrial Development Zone, Torch Road, No. 22, Ming Yang Industrial Park, Zhongshan Applicant before: Guangdong Mingyang Wind Power Group Co., Ltd. |
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Application publication date: 20161207 |