CN106762415B - A method of reducing wind power generating set impeller imbalance ultimate load - Google Patents
A method of reducing wind power generating set impeller imbalance ultimate load Download PDFInfo
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- CN106762415B CN106762415B CN201710050518.XA CN201710050518A CN106762415B CN 106762415 B CN106762415 B CN 106762415B CN 201710050518 A CN201710050518 A CN 201710050518A CN 106762415 B CN106762415 B CN 106762415B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000004088 simulation Methods 0.000 claims abstract description 19
- 230000004913 activation Effects 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 10
- 240000002853 Nelumbo nucifera Species 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 3
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 210000003746 feather Anatomy 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 244000131316 Panax pseudoginseng Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 238000002360 preparation method 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
-
- 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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
- F03D7/043—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic
- F03D7/045—Automatic control; Regulation by means of an electrical or electronic controller characterised by the type of control logic with model-based controls
-
- 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
-
- 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
- F05B2270/327—Rotor or generator speeds
-
- 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
- F05B2270/335—Output power or torque
-
- 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)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Wind Motors (AREA)
Abstract
The present invention provides a kind of method for reducing wind power generating set impeller imbalance ultimate load, comprising: S1: establishes the model of wind power generating set；S2: the installed load sensor at the blade root of each blade of the impeller of the wind power generating set；S3: by analog simulation, being respectively at the impeller of the wind power generating set under conditions of normal wind regime and limit wind regime, acquires the simulation output load of the load transducer under two kinds of simulation wind regime；S4: in conjunction with the wind regime type of analog simulation and the simulation output load of load transducer, activation threshold value is determined；S5: the measurement parameter of the practical wind regime apparatus for lower wind generating set of acquisition and the reality output load of the load transducer judge whether the practical wind regime belongs to limit wind regime according to the measurement parameter；If so, the size of the reality output load and the activation threshold value, such as the reality output load are equal to or more than the activation threshold value again, starting independent pitch is shut down away from control shutdown mode.
Description
Technical field
The present invention relates to the control strategy field of wind power generating set, in particular to a kind of reduction wind power generating set impeller
The method of uneven ultimate load.
Background technique
To absorb wind energy to greatest extent, current Large-scale Wind Turbines all have yaw system.Yaw system with
The wind direction signals that anemoscope measures are realized by adjust automatically nacelle position automatically to wind as input.With cabin longitudinal central axis
It is 0 ° that line and wind direction, which are completely coincident, and yaw system entry condition is that wind deflection is greater than 15 °.So wind direction becomes under normal wind regime
Change will not quickly, and wind deflection is at ± 15 °.But under limit wind regime, turbulivity is very big, wind direction can mutate, while companion
With there is wind speed mutation.Under this wind regime, yaw system can not follow wind vector to adjust nacelle position in real time, cause impeller by
The impact of unbalanced load.To influence from unbalanced load, strategy is shut down in wind power generating set starting, and blade stops according to design
Machine rate rotates to feather position.Even if strategy is shut down in starting, in stopping process, since impeller unbalanced load is very big, according to
So cause hubload and blade loading bigger than normal.Therefore, the load for how reducing limit wind regime apparatus for lower wind generating set becomes this
Field technical staff technical problem urgently to be resolved.
Summary of the invention
The purpose of the present invention is for wind power generating set, under wind direction catastrophe, impeller unbalanced load is bigger than normal etc. is asked
Topic provides a kind of method for reducing wind power generating set impeller imbalance ultimate load, to reduce limit wind regime apparatus for lower wind hair
Electric rack load.
In order to achieve the above object, the present invention proposes following technical scheme:
A method of reducing wind power generating set impeller imbalance ultimate load, comprising the following steps:
S1: the model of wind power generating set is established；
S2: the installed load sensor at the blade root of each blade of the impeller of the wind power generating set；
S3: by analog simulation, the impeller of the wind power generating set is made to be respectively at normal wind regime and limit wind regime
Under the conditions of, acquire the simulation output load of the load transducer under two kinds of simulation wind regime；
S4: in conjunction with the wind regime type of analog simulation and the simulation output load of load transducer, activation threshold value is determined；
S5: the measurement parameter of the practical wind regime apparatus for lower wind generating set of acquisition and the reality output of the load transducer carry
Lotus judges whether the practical wind regime belongs to limit wind regime according to the measurement parameter；If so, the reality output carries again
The size of lotus and the activation threshold value, such as the reality output load are equal to or more than the activation threshold value, start independent pitch
It is shut down away from control shutdown mode.
The method of the reduction wind power generating set impeller imbalance ultimate load proposed according to the present invention, wherein the wind
The model of power generator group includes sequentially connected Aerodynamics Model, machine driven system model, generator and current transformer
Model, electric network model have also been sequentially connected with variable pitch between the Aerodynamics Model and the generator and current transformer model
Control system, controller and moment controlling system.
The method of the reduction wind power generating set impeller imbalance ultimate load proposed according to the present invention, wherein the survey
Measuring parameter includes propeller pitch angle, power and generator speed.
The method of the reduction wind power generating set impeller imbalance ultimate load proposed according to the present invention, wherein the load
Lotus sensor is four, be separately mounted to blade root suction side, on the pressure side, leading edge and rear, wherein being mounted on suction side and pressure
The load transducer output of power side is blade root vertical load, and the load transducer output for being mounted on leading edge and rear is blade root
Horizontal load.
The method of the reduction wind power generating set impeller imbalance ultimate load proposed according to the present invention, wherein the step
It is that the activation threshold value is determined by the blade root vertical load in rapid S4.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the wind-driven generator group model in the present invention；
Fig. 2 is the schematic view of the mounting position of load transducer in the present invention；
Fig. 3 is the flow chart that strategy is shut down in present invention judgement；
Fig. 4, Fig. 5 are that independent feathering control shuts down and variable pitch is concentrated to shut down comparative result figure in the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under that premise of not paying creative labor
Embodiment shall fall within the protection scope of the present invention.
Overall technical architecture of the invention is that first choice passes through the normal wind regime of analogue simulation and limit wind regime, and not by two kinds
With the wind speed and wind speed input wind-driven generator group model under situation, so that acquisition is located at the output of the load transducer on impeller
Numerical value carries out classification comparison by the output numerical value to load transducer under different wind regime, obtains when in institute under limit wind regime
The least limit load value that load transducer is exported is stated, this least limit load value is just used as the firing level of subsequent judgement
Value.When wind power generating set under practical wind regime when running, first passes through the parameters such as propeller pitch angle, power and generator speed and determine
Current wind generating set is in normal wind regime or limit wind regime；If normal wind regime is in, when needing to shut down only with normal
The concentration variable pitch orderly closedown mode of rule；Before the output numerical value in limit wind regime and load transducer has been more than
Determining activation threshold value is then needed using independent feathering control halt mode.Pass through the flexible utilization of two kinds of halt modes, Ke Yi
Reduce generating set load to the maximum extent while reducing power consumption.
About concentrating feather to shut down with independent pitch away from shutdown, a simple declaration is done below:
Mode currently used for shutting down under limit wind regime, which mainly has, concentrates variable pitch control to shut down with independent pitch away from shutdown.
Concentrating variable pitch control is the variable pitch control method to grow up at first, and unified variable propeller pitch is also made to control, and application at present is the most
It is mature.Unified variable propeller pitch control refers to that the vaned propeller pitch angle of wind-driven generator institute changes simultaneously identical angle.Independent pitch
Control is grown up on the basis of unified variable pitch, it refers to each blade of wind-driven generator according to itself control law list
Solely change propeller pitch angle, so that three blades have different aerodynamic qualities, therefore can effectively solve in unified variable pitch
Due to wind shear effect, tower shadow effect, turbulence effect etc. inevitably load caused by disturbing factor when ask on space
Non-uniform problem, so that a possibility that reducing blade fatigue damage, exports stable power.
The structural schematic diagram for the wind-driven generator group model being applied in the present invention is referring to Figure 1.Each input ginseng in Fig. 1
The meaning that number represents is as follows:
ΩtImpeller angular velocity of rotation；β-propeller pitch angle；VvWind speed；DvWind direction；TtImpeller torque；ωmGenerator amature
Angular speed；TemGenerator torque；Tem refGenerator torque；VconverterCurrent transformer voltage；VgridNetwork voltage；βrefPhase
Hope propeller pitch angle；βmeasureAngle measurement value；ωmeasureGenerator speed measurement value；PmeasurePower measurement values；
LmeasureBlade loading measured value.
Wind-driven generator group model in the present invention is not limited to specific structure shown in FIG. 1, in the prior art other types
Wind-driven generator group model be applied equally to the present invention.
The installation site of load transducer is installed respectively as shown in Fig. 2, specifically include four load transducers in the present invention
In the suction side (Suction Side) of blade root, on the pressure side (Pressure Side), leading edge (Leading Edge) and rear
(Trailing Edge), wherein be mounted on suction side and on the pressure side load transducer output be blade root vertical load My, peace
It is blade root horizontal load Mx mounted in the output of the load transducer of leading edge and rear.
On the basis of installing load transducer, collects the normal wind regime shutdown of analogue simulation and the pneumatic shear of limit wind regime is cut through
The blade root load data shut down when big.It analyzes load data and determines the activation threshold value of blade root load My in conjunction with simulation result, make
The incision condition of logic is shut down for independent feathering control.Further, the independent feathering control based on design of Simulation is shut down into plan
It is slightly transplanted to field controller and carries out on-the-spot test, according to the activation threshold value determined, the propeller pitch angle arrived in conjunction with actual monitoring, function
The parameters such as rate and generator speed, starting independent feathering control is shut down in the case that load data is more than threshold value under limit wind regime
Strategy then starts in the case of remaining and concentrates variable pitch orderly closedown strategy.Detailed process is as shown in Figure 3.
It is sufficiently proved by field test, limit wind regime leeward power generator can be effectively reduced in method proposed by the present invention
Group load.Fig. 4, Fig. 5 are that independent feathering control shuts down and variable pitch is concentrated to shut down Comparative result.Fig. 4 shows two kinds of shutdown variable pitch angles
Degree, takes independent feathering control halt mode, variable pitch angle has additional ripple, which can effectively offset impeller not
Balance thrust.As shown in figure 5, independent feathering control is taken to shut down, hubload is substantially reduced.
Those of ordinary skill in the art will appreciate that: attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Process is not necessarily implemented necessary to the present invention.
Those of ordinary skill in the art will appreciate that: the module in device in embodiment can describe to divide according to embodiment
It is distributed in the device of embodiment, corresponding change can also be carried out and be located in one or more devices different from the present embodiment.On
The module for stating embodiment can be merged into a module, can also be further split into multiple submodule.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify to technical solution documented by previous embodiment or equivalent replacement of some of the technical features；And
These are modified or replaceed, the spirit and model of technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (5)
1. a kind of method for reducing wind power generating set impeller imbalance ultimate load, which comprises the following steps:
S1: the model of wind power generating set is established；
S2: the installed load sensor at the blade root of each blade of the impeller of the wind power generating set；
S3: by analog simulation, the impeller of the wind power generating set is made to be respectively at the condition of normal wind regime and limit wind regime
Under, acquire the simulation output load of the load transducer under two kinds of simulation wind regime；
S4: in conjunction with the wind regime type of analog simulation and the simulation output load of load transducer, activation threshold value is determined；
S5: the measurement parameter of the practical wind regime apparatus for lower wind generating set of acquisition and the reality output load of the load transducer,
Judge whether the practical wind regime belongs to limit wind regime according to the measurement parameter；If so, the reality output load again
With the size of the activation threshold value, such as the reality output load be equal to or more than the activation threshold value, starting independent pitch away from
Control shutdown mode is shut down.
2. the method according to claim 1 for reducing wind power generating set impeller imbalance ultimate load, which is characterized in that
The model of the wind power generating set include sequentially connected Aerodynamics Model, machine driven system model, generator and
Current transformer model, electric network model are also sequentially connected between the Aerodynamics Model and the generator and current transformer model
There are variable blade control system, controller and moment controlling system.
3. the method according to claim 1 or 2 for reducing wind power generating set impeller imbalance ultimate load, feature exist
In the measurement parameter includes propeller pitch angle, power and generator speed.
4. the method according to claim 1 or 2 for reducing wind power generating set impeller imbalance ultimate load, feature exist
Be four in, the load transducer, be separately mounted to blade root suction side, on the pressure side, leading edge and rear, wherein being mounted on suction
Power side and load transducer output on the pressure side are blade root vertical load, are mounted on the load transducer output of leading edge and rear
It is blade root horizontal load.
5. the method according to claim 4 for reducing wind power generating set impeller imbalance ultimate load, which is characterized in that
It is that the activation threshold value is determined by the blade root vertical load in the step S4.
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| CN201710050518.XA CN106762415B (en) | 2017-01-23 | 2017-01-23 | A method of reducing wind power generating set impeller imbalance ultimate load |
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| CN201710050518.XA CN106762415B (en) | 2017-01-23 | 2017-01-23 | A method of reducing wind power generating set impeller imbalance ultimate load |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259637B (en) * | 2019-06-25 | 2021-03-23 | 中国船舶重工集团海装风电股份有限公司 | Pneumatic unbalance correction method, device and equipment for blades of wind generating set |
| CN113007013B (en) * | 2019-12-20 | 2022-11-22 | 新疆金风科技股份有限公司 | Torsion load control method, device and system and wind generating set |
| CN111734585B (en) * | 2020-06-18 | 2023-06-27 | 上海电气风电集团股份有限公司 | Method and device for determining limit load of wind driven generator and readable storage medium |
| CN112031998B (en) * | 2020-09-21 | 2021-08-10 | 山东中车风电有限公司 | Wind turbine generator independent variable pitch control optimization method and system based on laser radar |
| CN113669201B (en) * | 2021-09-15 | 2022-09-06 | 中国华能集团清洁能源技术研究院有限公司 | Limit load control method for wind turbine generator under extreme conditions |
| CN113653596B (en) * | 2021-09-23 | 2023-07-14 | 华北电力大学 | Double-wind-wheel wind turbine pitch control method based on fuzzy prediction and sector management |
| CN115095481B (en) * | 2022-06-27 | 2023-03-10 | 上海拜安传感技术有限公司 | Independent variable pitch adjusting method and system for wind driven generator |
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