CN106640520A - Improving method for power of wind power generator - Google Patents

Improving method for power of wind power generator Download PDF

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Publication number
CN106640520A
CN106640520A CN201611212348.2A CN201611212348A CN106640520A CN 106640520 A CN106640520 A CN 106640520A CN 201611212348 A CN201611212348 A CN 201611212348A CN 106640520 A CN106640520 A CN 106640520A
Authority
CN
China
Prior art keywords
wind
driven generator
pitch angle
speed
enhancing power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201611212348.2A
Other languages
Chinese (zh)
Inventor
高鑫
宁琨
莫尔兵
宋聚众
王兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electric Power Research Institute of State Grid Shanxi Electric Power Co Ltd
Dongfang Electric Wind Power Co Ltd
Original Assignee
Dongfang Electric Wind Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongfang Electric Wind Power Co Ltd filed Critical Dongfang Electric Wind Power Co Ltd
Priority to CN201611212348.2A priority Critical patent/CN106640520A/en
Publication of CN106640520A publication Critical patent/CN106640520A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • F05B2270/103—Purpose of the control system to affect the output of the engine
    • F05B2270/1033—Power (if explicitly mentioned)
    • 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
    • F05B2270/328—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
    • F05B2270/70—Type of control algorithm
    • F05B2270/702—Type of control algorithm differential
    • 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 invention discloses an improving method for power of a wind power generator. According to the improving method for power, the pitch angle of a wind turbine blade is controlled to be optimized and adjusted by an obtained acceleration of a wind turbine, such that the high use rate of the wind energy is realized in a change process of a wind speed by optimizing and adjusting the pitch angle of the blade. According to the improving method, the pitch angle of the wind turbine blade is correspondingly controlled to be optimized and adjusted by obtaining the change of the acceleration of the wind turbine, that is, by adjusting the change of the pitch angle of the wind turbine blade in the change process of the wind speed, an operation track of a Cp value in a Cp-lambda curve is controllably changed, such that the efficient use of the wind energy can be effectively and reliably realized in the change process of the wind speed, the power of the wind power generator is stably, effectively and reliably improved and the operation of the wind power generator is economic, reliable and practical.

Description

A kind of wind-driven generator method for enhancing power
Technical field
The present invention relates to the control method of wind-driven generator, specifically a kind of wind-driven generator method for enhancing power.
Background technology
Wind-driven generator is to realize what energy was changed with the Wind Power Utilization of nature, and its height to wind energy utilization is straight Connect the economy that decide operation.Wind-driven generator, particularly MW class wind turbines are typically to follow the trail of optimum Cp- λ curves Control method, obtain maximum wind energy utilization, and optimum CpThe principal element of-λ curve controlleds depends on stable wind speed Environment.
However, the wind energy speed of nature is changeable, non-constant, this may result in the wind wheel being currently running at itself In the presence of very big inertia and rotating speed does not catch up with the quick change of wind speed, thus, λ value (tip speed ratio) when wind speed increases suddenly Can reduce, in the case of rotor blade pitch angle beta is immovable, the C of wind-driven generatorpValue (operation power coefficient) can substantially drop It is low.It is prominent in wind speed referring to the rotor blade pitch angle shown in Fig. 1 and Fig. 2, set under wind-driven generator current operating conditions as β During so increasing, when rotor blade pitch angle does not change (i.e. the angle changing of β is 0 °), wind-power electricity generation chance along β= 0 ° of Cp- λ curve motions, its state can be by the C of A pointspThe C of value changes to D pointspValue, i.e. wind-driven generator are transported along curve ABD OK；After the wind speed round of wind-driven generator is gradually stable, it is along curve DBA again by the C of D pointspValue returns to the C of A pointspValue, That is, in primary air velocity change procedure, the C of wind-driven generatorpValue is in CpCan transport by the track of ABD → DBA in-λ curve maps OK.Obvious, in the C of wind-driven generator operationpIn-λ curve maps, rotor blade pitch angle beta do not change under D point CpValue is bright It is aobvious low, so that wind-driven generator cannot realize that the high efficiency to wind energy is utilized in wind speed change procedure, cause wind The performance driving economy of power generator is poor.
The content of the invention
The present invention technical purpose be：For above-mentioned the deficiencies in the prior art, there is provided one kind is in wind speed change procedure The wind-driven generator method for enhancing power for utilizing to wind energy high efficiency, performance driving economy is good can be realized.
The present invention realizes that the technical scheme that its technical purpose is adopted is, a kind of wind-driven generator method for enhancing power, institute It is that the adjustment of rotor blade pitch angle and optimizing is controlled with the wind wheel acceleration of acquisition to state method for enhancing power, so as to utilize blade The high usage to wind energy is realized in optimizing and revising for propeller pitch angle in wind speed change procedure.
The computation model of rotor blade pitch angle and optimizing adjustment is：
In formula, β for wind wheel blade propeller pitch angle, β0For the optimum embedding angle of wind wheel blade, α is adjustment factor,For wind wheel Acceleration.Further, the adjustment factor α in the rotor blade pitch angle and optimizing Adjustable calculation model is sent out by wind-force Obtained using optimizing algorithm under motor practical operation situation, the span of adjustment factor α is 0～5, in this span In, the preferred value of α is 0.8.
The wind wheel acceleration is that the speed probe by being arranged on wind-driven generator and differential tracker are obtained, institute Speed probe is stated for obtaining the speed of wind driven generator principal shaft, the differential tracker is used to extract speed probe Micro component in the frequency signal of output simultaneously carries out alignment processing, so as to obtain wind wheel acceleration information.Further, it is described Differential tracker is non-linear steepest differential tracker.
Preferably, the wind-driven generator is MW class wind turbine.
The method have the benefit that：
1. by the change of acquisition wind wheel acceleration, corresponding control rotor blade pitch angle and optimizing is adjusted the present invention, i.e., Changed by the adjustment at rotor blade pitch angle in wind speed change procedure and make CpC in-λ curvespValue running orbit is corresponding The controllable change of generation, so as to effectively and reliably realize that the high efficiency to wind energy is utilized in wind speed change procedure so that wind-force is sent out The power of motor stablized, effectively and reliably lifted and (can improve typically for the power output of MW class wind turbines More than 0.6%), the performance driving economy of wind-driven generator is reliable, practical；
2. the non-linear steepest differential tracker selected by the present invention can quickly track primary signal, so as to reasonably carry Micro component in the number of winning the confidence, and then the micro component to extracting effectively and reliably realizes the attenuation processing of signal interference noise, obtains High accurately wind wheel acceleration information, it is advantageously ensured that the accuracy and reliability of the adjustment of rotor blade pitch angle and optimizing.
Description of the drawings
Fig. 1 is the CP- λ curve synoptic diagrams that certain type wind rotor blade of wind generator runs under different pitch angle betas.
Fig. 2 is the partial enlarged drawing of Fig. 1.
Fig. 3 is the theory diagram of the rotor blade pitch angle and optimizing adjustment of the present invention.
Specific embodiment
The present invention is wind-driven generator, particularly MW class wind turbine (i.e. large-scale wind driven generator) is in running In method for enhancing power, below in conjunction with the accompanying drawings to the present invention technology contents be described in detail.
Referring to shown in Fig. 1, Fig. 2 and Fig. 3, the present invention is realized by following technique measures：
First, speed probe and differential tracker are arranged on wind-driven generator；
Speed probe is arranged on the main shaft of wind-driven generator, for obtaining wind-driven generator main shaft rotation operationally Turn frequency, acquired rotation frequency of spindle is exported to differential tracker；
Differential tracker TD adopts non-linear steepest differential tracker, the differential tracker quickly to track original letter Number, so as to reasonably extract the micro component in signal, and then the micro component to extracting effectively and reliably realizes signal interference noise Attenuation processing；Differential tracker TD is arranged in the switch board in wind-driven generator；Differential tracker TD is used to extract rotating speed Micro component in the frequency signal of sensor output, by the micro component of extraction the attenuation processing of signal interference noise is carried out, so as to Obtain wind wheel acceleration information when wind-driven generator runs；
Then, the wind wheel acceleration information by obtaining is controlled to the wind wheel blade of wind-driven generator, makes wind wheel leaf The propeller pitch angle of piece is realized optimizing and revising；Rotor blade pitch angle and optimizing is adjusted by wind turbines rotor acceleration information Computation model is：
In the computation model, β for wind wheel blade propeller pitch angle, β0For the optimum embedding angle of wind wheel blade, α is to adjust system Number,For wind wheel acceleration；Aforementioned adjustment factor α is by being obtained using optimizing algorithm under wind-driven generator practical operation situation , the span of adjustment factor α is 0～5, such as 0.5,0.8,1.5,2.8,4,4.9 etc., excellent in aforementioned span Select 0.8.
So as to optimizing and revising using rotor blade pitch angle, realize that the usury to wind energy is used in wind speed change procedure Rate.
C when now being run with wind-driven generatorpValue is in CpRunning orbit in-λ curve maps is carried out specifically to the present invention It is bright.
The C of wind-driven generator is made by the present inventionpValue is in CpRunning orbit in-λ curve maps is to set wind-driven generator Rotor blade pitch angle under current operating conditions is β, and during wind speed increases suddenly, rotor blade pitch angle carries out excellent Change the change (i.e. β has an angle changing, and such as angle changing is -1 °) of adjustment, so that along the C of β=0 °p- λ curve motions Wind-driven generator be adjusted switching, along the C of β=- 1 °p- λ curve motions, its state can be by the C of A pointspValue changes are to B points CpValue, then by B point CpThe C of value changes to C pointspValue, i.e. wind-driven generator are run along curve ABC；When the wind of wind-driven generator After wheel speed is gradually stablized, it is along curve CBA again by the C of C pointspValue returns to the C of A pointspValue, that is to say, that become in primary air velocity During change, the C of wind-driven generatorpValue is in CpCan run by the track of ABC → CBA in-λ curve maps.Obvious, send out in wind-force The C of motor operationpC point C in-λ curve maps, under the change of rotor blade pitch angle betapValue is the D point C apparently higher than under not changingp Value, so that wind-driven generator effectively and reliably realizes that the high efficiency to wind energy is utilized in wind speed change procedure, improve The performance driving economy of wind-driven generator.
Above concrete technical scheme only to illustrate the present invention, rather than a limitation；Although with reference to above-mentioned particular technique side Case has been described in detail to the present invention, it will be understood by those within the art that：The present invention still can be to above-mentioned Concrete technical scheme is modified, or equivalent is carried out to which part technical characteristic, and these modifications or replacement, and The essence for not making appropriate technical solution departs from the spirit and scope of the present invention.

Claims (6)

1. a kind of wind-driven generator method for enhancing power, it is characterised in that the method for enhancing power is that the wind wheel to obtain adds Speed and control rotor blade pitch angle and optimizing adjustment, so as to optimizing and revising in wind speed change procedure using blade pitch angle Realize the high usage to wind energy.
2. wind-driven generator method for enhancing power according to claim 1, it is characterised in that the rotor blade pitch angle is excellent Changing the computation model of adjustment is：
β = β 0 - α ω · ;
In formula, β for wind wheel blade propeller pitch angle, β0For the optimum embedding angle of wind wheel blade, α is adjustment factor,For wind wheel acceleration Degree.
3. wind-driven generator method for enhancing power according to claim 2, it is characterised in that the rotor blade pitch angle is excellent The adjustment factor α changed in Adjustable calculation model is, by being calculated using optimizing under the independent power generator practical operation situation per typhoon Method is obtained, and the span of adjustment factor α is 0～5.
4. wind-driven generator method for enhancing power according to claim 1, it is characterised in that the wind wheel acceleration is to pass through The speed probe being arranged on wind-driven generator and differential tracker are obtained, and the speed probe is used to obtain wind-power electricity generation The speed of owner's axle, the differential tracker be used for extract speed probe output frequency signal in micro component and Alignment processing is carried out, so as to obtain wind wheel acceleration information.
5. wind-driven generator method for enhancing power according to claim 4, it is characterised in that the differential tracker is non-thread Property steepest differential tracker.
6. wind-driven generator method for enhancing power according to claim 1, it is characterised in that the wind-driven generator for megawatt Class wind turbine.
CN201611212348.2A 2016-12-25 2016-12-25 Improving method for power of wind power generator Pending CN106640520A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611212348.2A CN106640520A (en) 2016-12-25 2016-12-25 Improving method for power of wind power generator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611212348.2A CN106640520A (en) 2016-12-25 2016-12-25 Improving method for power of wind power generator

Publications (1)

Publication Number Publication Date
CN106640520A true CN106640520A (en) 2017-05-10

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090224542A1 (en) * 2006-05-31 2009-09-10 Erik Nim Wind turbine operational method
EP2211055A1 (en) * 2009-01-22 2010-07-28 Vestas Wind Systems A/S Control of rotor during a stop process of a wind turbine
CN103375332A (en) * 2012-04-17 2013-10-30 北京能高自动化技术股份有限公司 Dynamic optimization method for optimal resisting moment in variable-speed variable-pitch wind generating unit
CN103939288A (en) * 2013-01-22 2014-07-23 通用电气公司 Wind turbine and method for adjusting rotor blade pitch angle in wind turbines
CN104214045A (en) * 2013-05-30 2014-12-17 成都阜特科技股份有限公司 Independent variable pitch control method of double-fed variable-speed variable-pitch wind generating set
CN106121914A (en) * 2016-08-26 2016-11-16 三重型能源装备有限公司 The closing method of blower fan and system under extremity

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090224542A1 (en) * 2006-05-31 2009-09-10 Erik Nim Wind turbine operational method
EP2211055A1 (en) * 2009-01-22 2010-07-28 Vestas Wind Systems A/S Control of rotor during a stop process of a wind turbine
CN103375332A (en) * 2012-04-17 2013-10-30 北京能高自动化技术股份有限公司 Dynamic optimization method for optimal resisting moment in variable-speed variable-pitch wind generating unit
CN103939288A (en) * 2013-01-22 2014-07-23 通用电气公司 Wind turbine and method for adjusting rotor blade pitch angle in wind turbines
CN104214045A (en) * 2013-05-30 2014-12-17 成都阜特科技股份有限公司 Independent variable pitch control method of double-fed variable-speed variable-pitch wind generating set
CN106121914A (en) * 2016-08-26 2016-11-16 三重型能源装备有限公司 The closing method of blower fan and system under extremity

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Effective date of registration: 20180920

Address after: 618000 2 Huashan South Road, Deyang, Sichuan, 2

Applicant after: DONGFANG ELECTRIC WIND POWER CO., LTD.

Applicant after: Electric Power Research Institute of State Grid Shanxi Power Supply Company

Address before: 618000 2 Huashan South Road, Deyang, Sichuan, 2

Applicant before: DONGFANG ELECTRIC WIND POWER CO., LTD.

WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170510