CN109245639A - A kind of Wind turbines frequency modulation method, device, equipment and medium - Google Patents
A kind of Wind turbines frequency modulation method, device, equipment and medium Download PDFInfo
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- CN109245639A CN109245639A CN201811203661.9A CN201811203661A CN109245639A CN 109245639 A CN109245639 A CN 109245639A CN 201811203661 A CN201811203661 A CN 201811203661A CN 109245639 A CN109245639 A CN 109245639A
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/007—Control circuits for doubly fed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/24—Arrangements for preventing or reducing oscillations of power in networks
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- H02J3/386—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
- H02P9/04—Control effected upon non-electric prime mover and dependent upon electric output value of the generator
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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
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The invention discloses a kind of Wind turbines frequency modulation method, device, equipment and media, under ultralow wind speed mode, utilize flywheel energy storage frequency modulation control module frequency modulation；Under low wind speed mode, frequency modulation is still engaged in flywheel energy storage module, and the hypervelocity Control of decreasing load in comprehensive off-load control module works, and sagging control and virtual inertia control participate in control frequency modulation；Under apoplexy fast mode, using hypervelocity Control of decreasing load and pitch control frequency modulation, sagging control and virtual inertia control are worked；Under high wind speed mode, frequency modulation is controlled using pitch control, sagging control and virtual inertia control participate in control frequency modulation；It realizes the various mutually coordinated cooperations of controlling unit under different wind speed modes and carries out frequency modulation, so that mains frequency is stablized.
Description
Technical field
The present invention relates to Power System Analysis technical field more particularly to a kind of Wind turbines frequency modulation methods, device, equipment
And medium.
Background technique
Double-fed fan motor unit is incorporated into the power networks by current transformer, and the frequency for causing the output of its active power to cannot respond to system becomes
Change, when the double-fed blower fan group on a large scale without fm capacity is connected to the grid, seriously reduces the fm capacity of system.Therefore it needs
Double-fed fan motor unit is made to have certain fm capacity to improve mains frequency stability.
The prior art, which substantially passes through, improves real power control link in Wind turbines, so that the active power output of Wind turbines can
With the variation of response system frequency.From control principle, it is broadly divided into the control of rotor kinetic energy and power backup control.Rotor kinetic energy control
System includes short-time rating control, sagging control and virtual inertia control.Power backup control includes hypervelocity Control of decreasing load and variable pitch
Control.In addition, many scholars are in the energy storage devices smooth wind power unit such as research and utilization battery, flywheel energy storage, supercapacitor
Power output, the method that cooperation Wind turbines participate in system frequency modulation.Various control methods respectively have advantage and disadvantage, and applicable scene is also different.
Although current many scholars have carried out a large amount of research to the mutual cooperation of various control methods, various strategies are matched
It is more and complicated to close the factor restricted when using, how to adapt to complicated operating condition and solution is not yet received.
Summary of the invention
The embodiment of the present invention provides a kind of Wind turbines frequency modulation method, device, equipment and medium, realizes different wind speed moulds
The various mutually coordinated cooperations of controlling unit carry out frequency modulation under formula, so that mains frequency is stablized.
One embodiment of the invention provides a kind of Wind turbines frequency modulation method characterized by comprising flywheel energy storage frequency modulation control
Molding block, comprehensive off-load control module and combined inertia control module, the comprehensive off-load control module include hypervelocity off-load
Control and pitch control, the combined inertia control module include sagging control and virtual inertia control；
When ultralow wind speed mode, frequency variation is input to the flywheel energy storage frequency modulation control module, obtains first
Output quantity；
The hypervelocity Control of decreasing load and pitch control fail, the off-load of the hypervelocity Control of decreasing load and pitch control
Amount is disposed as 0；
The sagging control and virtual inertia control failure, the sagging control proportionality coefficient and virtual inertia control
Proportionality coefficient is 0；
When low wind speed mode, frequency variation is input to the flywheel energy storage frequency modulation control module, power setting ring
Section failure, obtains the second output quantity；
The off-load amount of the hypervelocity Control of decreasing load and maximal power tracing are input to comprehensive control module, the change
The off-load amount of paddle control is set as 0, obtains third output quantity；
A first adjustment coefficient less than or equal to 1, the first adjustment coefficient is arranged in the combined inertia control module
It is for adjusting sagging control proportionality coefficient and virtual inertia control proportionality coefficient, frequency departure and frequency variation input is comprehensive
Inertia control module is closed, the 4th output quantity is obtained；
In the middle when wind speed mode, the flywheel energy storage frequency modulation control Module Fail, i.e. flywheel proportionality coefficient are 0；
The sum of off-load amount and the off-load amount of pitch control of the hypervelocity Control of decreasing load are the off-load amount of Wind turbines, described
Off-load amount, the off-load amount of pitch control and the maximal power tracing of hypervelocity Control of decreasing load are input to comprehensive Control of decreasing load mould
Block obtains the 5th output quantity；
The sagging control proportionality coefficient is set as first reference value, and the virtual inertia control proportionality coefficient is set as the
Two a reference values obtain the 6th output quantity by frequency departure and frequency variation as input combined inertia control module；
When high wind speed mode, the flywheel energy storage frequency modulation control Module Fail, i.e. flywheel proportionality coefficient are 0；
The off-load amount and maximal power tracing output quantity of the pitch control are input to comprehensive off-load control module, obtain
7th output quantity；
The combined inertia control module is arranged one greater than 1 and is less than or equal to 1.5 second adjustment coefficient, and described second
Regulation coefficient becomes frequency departure and frequency for adjusting sagging control proportionality coefficient and virtual inertia control proportionality coefficient
Change input combined inertia control module, obtains the 8th output quantity.
Preferably, the ultralow wind speed range is { vcut_in, v1, the v1=vcut_in+a*(vcut_out-vcut_in), institute
State the separation wind speed v of ultralow wind speed and low wind speed1, vcut_inTo cut wind speed, a is ultralow wind speed coefficient, the range of a
For { 0,0.3 }.
Preferably, the separation wind speed of the low wind speed and middle wind speed is v2, the wind speed range { v of the low wind speed1, v2,
According to formula PMPPT=f (β, v, ω) is derived by v2, wherein ω is fan rotor maximum (top) speed ωmax, PMPPTFor maximum power
Value.
Preferably, the separation wind speed of the middle wind speed and high wind speed is v3, the wind speed range { v of the middle wind speed2, v3,
According to formulaIt solves, wherein ωmaxFor the fan rotor rotation speed upper limit, R is blower wind wheel radius, and n is gear-box
Gear ratio, λoptFor optimal tip speed ratio.
Preferably, the wind speed range of the high wind speed is { v3, vcut_out, the vcut_outFor cut-out wind speed.
Another embodiment of the present invention correspondence provides a kind of Wind turbines frequency modulation device, comprising:
Wind speed determination module, for judging wind speed；
Flywheel energy storage frequency modulation control module, for carrying out frequency modulation to Wind turbines under ultralow wind speed and low wind speed mode；
Comprehensive off-load control module, for being adjusted under low wind speed, middle wind speed and high wind speed mode to Wind turbines
Frequently；
Combined inertia control module, for carrying out frequency modulation to Wind turbines under low wind speed, middle wind speed and high wind speed mode.
Another embodiment of the present invention provides a kind of Wind turbines FM terminal equipment, including processor, memory and
The computer program executed by the processor is stored in the memory and is configured as, the processor executes the meter
A kind of Wind turbines frequency modulation method as described in any one of claim 1 to 5 is realized when calculation machine program.
Another embodiment of the present invention provides a kind of computer readable storage medium, the computer readable storage medium packet
Include the computer program of storage, wherein where controlling the computer readable storage medium in computer program operation
Equipment executes a kind of Wind turbines frequency modulation method as described in any one of claim 1 to 5.
The embodiment of the invention provides a kind of Wind turbines frequency modulation method, device, equipment and the medium of a kind of Wind turbines,
It has the following beneficial effects:
1, under different wind speed modes, flywheel energy storage frequency modulation control module is made full use of to carry out frequency modulation, systems stabilisation frequency.
Under ultralow wind speed mode, using flywheel energy storage frequency modulation control module frequency modulation, and make comprehensive off-load control module and synthesis used
Property control module failure, while using flywheel energy storage module smooth wind power unit output, avoid because combined inertia control mould
Block causes fan stall to cut machine；
Under low wind speed mode, frequency modulation is still engaged in flywheel energy storage module, but its power setting link is enabled to fail, comprehensive reducing
The hypervelocity Control of decreasing load carried in control module works, pitch control failure, since wind speed is still relatively low, in order to guarantee blower
Stable operation, the appropriate additional active power of output for reducing combined inertia control module, setting the first adjustment coefficient reduce sagging
Control and virtual inertia control proportionality coefficient；
Under apoplexy fast mode, the failure of flywheel energy storage frequency modulation control module frequency modulation control utilizes hypervelocity Control of decreasing load and change
Paddle controls frequency modulation, and sagging control and virtual inertia control are worked, and sagging control proportionality coefficient is equal with first reference value, virtually
Inertia control proportionality coefficient is equal with the second a reference value；
Under high wind speed mode, flywheel energy storage frequency modulation control Module Fail, hypervelocity Control of decreasing load failure, using pitch control reality
Existing Control of decreasing load frequency modulation, in order to improve the fm capacity of Wind turbines, setting second adjustment coefficient increases sagging control and virtual
Inertia control proportionality coefficient, the case where having comprehensively considered to different wind speed, carry out frequency modulation, by flywheel energy storage frequency modulation control module,
Mutual cooperation between comprehensive off-load control module and combined inertia control module carries out frequency modulation to different wind speed, so that power grid
Frequency stabilization.
2, wind speed determination module is devised, wind speed is divided into four ultralow wind speed, low wind speed, middle wind speed and high wind speed moulds
Formula, so that frequency modulation is more convenient, practicability is stronger, and frequency modulation effect is more preferable.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram for Wind turbines frequency modulation device that one embodiment of the invention provides.
Fig. 2 is a kind of schematic diagram of Wind turbines frequency modulation method provided by the 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, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to Fig. 1, a kind of Wind turbines frequency modulation method, comprising: flywheel energy storage frequency modulation control module 1, comprehensive Control of decreasing load
Module 2 and combined inertia control module 3, the comprehensive off-load control module 2 include hypervelocity Control of decreasing load 22 and variable pitch control
System 21, the combined inertia control module 3 include sagging control 31 and virtual inertia control 32；
Wind speed mode is divided into four ultralow wind speed, low wind speed, middle wind speed and high wind speed modes by wind speed mode decision module.
When ultralow wind speed mode, it is assumed that the separation wind speed v of ultralow wind speed and low wind speed1, give an incision wind speed
vcut_inWith cut-out wind speed vcut_out, the wind speed range of ultralow wind speed is { vcut_in, v1}.One reasonable ultralow wind speed system is set
The range of number a, a are { 0,0.3 }, can obtain v1=vcut_in+a*(vcut_out-vcut_in)。
Frequency variation is input to the flywheel energy storage frequency modulation control module 1, flywheel energy storage frequency modulation control works, will
Frequency variation timely responds to system frequency variation, the delivered power when wind speed is smaller, smooth wind power unit as input variable
Output quantity, electric power grid frequency stabilization obtains the first output quantity.Assuming that the first output quantity of flywheel energy storage frequency modulation control is Pg, grid-connected
Point sets active power as Pset, Wind turbines output quantity is Pw, P can be obtainedg=Δ f*Kg+Pset-Pw, wherein frequency deviation f
=f-fref, f is practical frequency, frefFor frequency reference, KgFor flywheel proportionality coefficient.
Hypervelocity Control of decreasing load 22 and pitch control 21 fail, and due to wind speed very little, running of wind generating set is in most power
It is still limited to track point output power, in order to improve Wind turbines efficiency, comprehensive off-load module control does not work, i.e., by variable pitch
The input variable off-load amount d of control 211The input variable off-load amount d of % and hypervelocity Control of decreasing load 222% is set as 0.
32 failure of sagging control 31 and virtual inertia control, combined inertia control module 3 is turned using blower
The kinetic energy contained in son goes to make up the frequency response ability of blower, and blower is made to have certain inertial response ability.In system frequency
For rate suddenly in raised situation, combined inertia control module 3 is the process of a speedup of first slowing down again, because wind speed is ultralow wind
Speed, then slow down and may reach vcut_in, it is removed so as to cause fan stall, the occurrence of in order to avoid this, then integrates
Inertia control module 3 fails, i.e. 31 Proportional coefficient Ks of sagging controlpf32 Proportional coefficient Ks are controlled with virtual inertiadfIt is 0.
When low wind speed mode, it is assumed that the separation wind speed of low wind speed and middle wind speed is v2, the wind speed range { v of low wind speed1,
v2}.Assuming that Wind turbines off-load amount is d%, v2Seek condition be under low wind speed mode only by hypervelocity Control of decreasing load 22 just
Wind turbines may be implemented and reserve d%*PMPPTParticipate in active frequency modulation.Assuming that fan rotor maximum (top) speed ωmax, subtracted according to hypervelocity
Control 22P- ω curve is carried, active-power P at this time is obtained, according to formula P=(1-d%) * PMPPTIt is counter push away it is corresponding at this time most
High-power value PMPPT, further according to formula PMPPT=f (β, v, ω) is back-calculated to obtain wind speed v at this time, then obtains low wind speed mode in
The boundary wind speed v of wind speed mode2=v.It should ensure that v in principle2>v1, otherwise reduce the value of ultralow wind speed coefficient a.
Frequency variation is input to the flywheel energy storage frequency modulation control module 1, the failure of power setting link obtains second
Output quantity, i.e. the second output quantity Pg=Δ f*Kg。
By the off-load amount d of the hypervelocity Control of decreasing load 222% and maximal power tracing are input to comprehensive control module,
According to hypervelocity Control of decreasing load 22p- ω curve, fan rotor rotation speed reference value ω is obtainedref.Pitch control in comprehensive Control of decreasing load
21 do not work, and the off-load amount of pitch control 21 is set as 0, it is assumed that Wind turbines off-load amount is d%, then enables d2%=d%,
d1%=0 obtains third output quantity.
The sagging control 31 of combined inertia control module 3 and virtual inertia control 32 function both on, since wind speed is low wind
A first adjustment coefficient b (b≤1) less than or equal to 1 is arranged in speed, combined inertia control module 3, and the first adjustment coefficient is for adjusting
31 proportionality coefficients of whole sagging control are set and virtual inertia controls 32 proportionality coefficients, and 31 proportionality coefficient a reference values of sagging control are
Kpf0Controlling 32 proportionality coefficient a reference values with virtual inertia is Kdf0, it is K in 31 proportionality coefficient a reference values of sagging controlpf=b*Kpf0,
It is K that virtual inertia, which controls 32 proportionality coefficient a reference values,df=b*Kdf0.In the case where wind speed is low wind speed, pass through setting ratio system
Number b make obtained the 4th output quantity Δ P of combined inertia control output become smaller, so as to avoid because during adjustment wind speed it is too low
And the occurrence of causing fan stall to cut machine.
In the middle when wind speed mode, it is assumed that the separation wind speed of middle wind speed and high wind speed is v3, the wind speed range { v of middle wind speed2,
v3, v3For the upper wind velocity limit for 22 usable range of Control of decreasing load that exceeds the speed limit.According to formulaIt solves, wherein ωmaxFor wind
The machine rotor revolving speed upper limit, R are blower wind wheel radius, and n is gear-box gear ratio, λoptFor optimal tip speed ratio.
Flywheel energy storage frequency modulation control module 1 fails, i.e. flywheel Proportional coefficient Kg=0；It exceeds the speed limit in comprehensive off-load control module 2
Control of decreasing load 22 and pitch control 21 work simultaneously, and off-load amount meets d1%+d2%=d%, d1% and d2% is with wind speed
Change and change, principle is preferential using hypervelocity Control of decreasing load 22, it is assumed that the range of wind speed v, v are { v2, v3, thend2%=1-d1%.With maximal power tracing output quantity PMPPT, 21 off-load amount d of pitch control1%
With hypervelocity 22 off-load amount d of Control of decreasing load2For % as input variable, output variable is the 5 that comprehensive off-load control module 2 exports
Output quantity Pω。
31 proportionality coefficients of sagging control are set as first reference value Kpf=Kpf0, virtual inertia control 32 proportionality coefficients setting
For the second a reference value Kdf=Kdf0, frequency deviation f and frequency are changedAs input combined inertia control module 3, obtain
To the 6th output quantity Δ P.
When high wind speed mode, the wind speed range of high wind speed is { v3, vcut_out, flywheel energy storage frequency modulation control module 1 is lost
Effect, i.e. flywheel Proportional coefficient Kg=0, frequency modulation demand can be met by Wind turbines frequency modulation under higher wind velocity condition.
Comprehensive Control of decreasing load is only with pitch control 21, even off-load amount d1%=d%, the off-load amount of pitch control 21
d1% and maximal power tracing output quantity PMPPTIt is input to comprehensive off-load control module 2, according to formula β '=f (PMPPT,d1%,
β0) the 7th output quantity β ' of pitch control 21 is acquired, wherein β0For initial propeller pitch angle.Due to being limited by maximum rotor revolving speed, this
When hypervelocity Control of decreasing load do not work.
The sagging control 31 and virtual inertia control 32 of combined inertia control function both on, and combined inertia control module 3 is set
The range for setting second adjustment coefficient a c, c greater than 1 and less than or equal to 1.5 is { 1,1.5 }, and second adjustment coefficient is for adjusting
31 proportionality coefficients of sagging control are set and virtual inertia controls 32 proportionality coefficients, 31 Proportional coefficient Ks of sagging controlpf=c*Kpf0, empty
Quasi- 32 Proportional coefficient K of inertia controldf=c*Kdf0, frequency departure and frequency variation input combined inertia control module 3 obtain
To the 8th output quantity.
Under different wind speed modes, flywheel energy storage frequency modulation control module 1 is made full use of to carry out frequency modulation, systems stabilisation frequency.
Under ultralow wind speed mode, using 1 frequency modulation of flywheel energy storage frequency modulation control module, and comprehensive off-load control module 2 and comprehensive is allowed
Inertia control module 3 fails, and while using flywheel energy storage module smooth wind power unit output, avoids because combined inertia controls
Module 3 causes fan stall to cut machine；
Under low wind speed mode, frequency modulation is still engaged in flywheel energy storage frequency modulation control module 1, but its power setting link is enabled to lose
It imitates, the hypervelocity Control of decreasing load in comprehensive off-load control module 2 works, and pitch control 21 fails, since wind speed is still relatively low,
In order to guarantee blower stable operation, the first adjustment is arranged in the appropriate additional active power of output for reducing combined inertia control module 3
Coefficient reduces sagging control 31 and virtual inertia controls 32 proportionality coefficients；
Under apoplexy fast mode, the failure of 1 frequency modulation control of flywheel energy storage frequency modulation control module closes and utilizes hypervelocity Control of decreasing load 22
With 21 frequency modulation of pitch control, sagging control 31 and virtual inertia control 32 are worked, 31 proportionality coefficients of sagging control and the first base
Quasi- value is equal, and it is equal with the second a reference value that virtual inertia controls 32 proportionality coefficients；
Under high wind speed mode, flywheel energy storage frequency modulation control module 1 fails, and hypervelocity Control of decreasing load 22 fails, using variable pitch control
System 21 realizes Control of decreasing load frequency modulation, and in order to improve the fm capacity of Wind turbines, setting second adjustment coefficient increases sagging control
31 and virtual inertia control 32 proportionality coefficients, the case where having comprehensively considered to different wind speed, carries out frequency modulation, passes through flywheel energy storage tune
Mutual cooperation between frequency control module 1, comprehensive off-load control module 2 and combined inertia control module 3 to different wind speed into
Row frequency modulation, so that mains frequency is stablized.
The present invention devises wind speed determination module, and wind speed is divided into ultralow wind speed, low wind speed, middle wind speed and high wind speed four
Mode, so that frequency modulation is more convenient, practicability is stronger, and frequency modulation effect is more preferable.
Referring to Fig. 1, another embodiment of the present invention correspondence provides a kind of Wind turbines frequency modulation device, comprising:
Wind speed determination module, for judging wind speed；
Flywheel energy storage frequency modulation control module 1, for carrying out frequency modulation to Wind turbines under ultralow wind speed and low wind speed mode；
Comprehensive off-load control module 2, for being adjusted under low wind speed, middle wind speed and high wind speed mode to Wind turbines
Frequently；
Combined inertia control module 3, for being adjusted under low wind speed, middle wind speed and high wind speed mode to Wind turbines
Frequently.
Another embodiment of the present invention provides a kind of Wind turbines FM terminal equipment, including processor, memory and
The computer program executed by the processor is stored in the memory and is configured as, the processor executes the meter
A kind of Wind turbines frequency modulation method as described in any one of claim 1 to 5 is realized when calculation machine program.
Another embodiment of the present invention provides a kind of computer readable storage medium, the computer readable storage medium packet
Include the computer program of storage, wherein where controlling the computer readable storage medium in computer program operation
Equipment executes a kind of Wind turbines frequency modulation method as described in any one of claim 1 to 5.
Illustratively, the computer program can be divided into one or more module/units, one or more
A module/unit is stored in the memory, and is executed by the processor, to complete the present invention.It is one or more
A module/unit can be the series of computation machine program instruction section that can complete specific function, and the instruction segment is for describing institute
State implementation procedure of the computer program in a kind of Wind turbines FM terminal equipment.
A kind of Wind turbines FM terminal equipment can be desktop PC, notebook, palm PC and cloud
Server etc. calculates equipment.A kind of Wind turbines FM terminal equipment may include, but be not limited only to, processor, memory.
It will be understood by those skilled in the art that the schematic diagram is only a kind of example of Wind turbines FM terminal equipment, not structure
A kind of pairs of restriction of Wind turbines FM terminal equipment may include components more more or fewer than diagram, or combine certain
A little components or different components, for example, a kind of Wind turbines FM terminal equipment can also include input-output equipment,
Network access equipment, bus etc..
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng the processor is a kind of control centre of Wind turbines FM terminal equipment, utilizes various interfaces and connection
A kind of entire various pieces of Wind turbines FM terminal equipment.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
A kind of various functions of Wind turbines FM terminal equipment.The memory can mainly include storing program area and storing data
Area, wherein storing program area can application program needed for storage program area, at least one function (such as sound-playing function,
Image player function etc.) etc.；Storage data area, which can be stored, uses created data (such as audio data, electricity according to mobile phone
Script for story-telling etc.) etc..In addition, memory may include high-speed random access memory, it can also include nonvolatile memory, such as
Hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure
Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other volatibility are solid
State memory device.
Wherein, if a kind of integrated module/unit of Wind turbines FM terminal equipment is with SFU software functional unit
Form realize and when sold or used as an independent product, can store in a computer readable storage medium.Base
In such understanding, the present invention realizes all or part of the process in above-described embodiment method, can also pass through computer program
It is completed to instruct relevant hardware, the computer program can be stored in a computer readable storage medium, the calculating
Machine program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program includes
Computer program code, the computer program code can for source code form, object identification code form, executable file or certain
A little intermediate forms etc..The computer-readable medium may include: any entity that can carry the computer program code
Or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software
Distribution medium etc..
It should be noted that the apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.In addition, device provided by the invention
In embodiment attached drawing, the connection relationship between module indicate between them have communication connection, specifically can be implemented as one or
A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can understand
And implement.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (8)
1. a kind of Wind turbines frequency modulation method characterized by comprising flywheel energy storage frequency modulation control module (1), comprehensive off-load control
Molding block (2) and combined inertia control module (3), the comprehensive off-load control module (2) include hypervelocity Control of decreasing load (22)
And pitch control (21), the combined inertia control module (3) include sagging control (31) and virtual inertia control (32)；
When ultralow wind speed mode, frequency variation is input to the flywheel energy storage frequency modulation control module (1), it is defeated to obtain first
Output；
The hypervelocity Control of decreasing load (22) and pitch control (21) fail, the hypervelocity Control of decreasing load (22) and variable pitch control
The off-load amount of system (21) is disposed as 0；
The sagging control (31) and virtual inertia control (32) failure, sagging control (31) proportionality coefficient and virtually
Inertia control (32) proportionality coefficient is 0；
When low wind speed mode, frequency variation is input to the flywheel energy storage frequency modulation control module (1), power setting link
Failure, obtains the second output quantity；
The off-load amount of hypervelocity Control of decreasing load (22) and maximal power tracing output quantity are input to comprehensive control module, it is described
The off-load amount of pitch control (21) is set as 0, obtains third output quantity；
A first adjustment coefficient less than or equal to 1 is arranged in the combined inertia control module (3), and the first adjustment coefficient is used
It is set in sagging control (31) proportionality coefficient of adjustment and virtual inertia controls (32) proportionality coefficient, frequency departure and frequency are become
Change input combined inertia control module (3), obtains the 4th output quantity；
In the middle when wind speed mode, flywheel energy storage frequency modulation control module (1) failure, i.e. flywheel proportionality coefficient are 0；
The sum of off-load amount and the off-load amount of pitch control (21) of hypervelocity Control of decreasing load (22) are the off-load amount of Wind turbines,
Off-load amount, the off-load amount of pitch control (21) and the maximal power tracing output quantity of hypervelocity Control of decreasing load (22) are input to
Comprehensive off-load control module (2), obtain the 5th output quantity；
Described sagging control (31) proportionality coefficient is set as first reference value, virtual inertia control (32) the proportionality coefficient setting
The 6th output is obtained by frequency departure and frequency variation as input combined inertia control module (3) for the second a reference value
Amount；
When high wind speed mode, flywheel energy storage frequency modulation control module (1) failure, i.e. flywheel proportionality coefficient are 0；
The off-load amount and maximal power tracing output quantity of the pitch control (21) are input to comprehensive off-load control module (2),
Obtain the 7th output quantity；
The combined inertia control module (3) is arranged one greater than 1 and is less than or equal to 1.5 second adjustment coefficient, and described second
Regulation coefficient controls (32) proportionality coefficient for adjusting sagging control (31) proportionality coefficient and virtual inertia, by frequency departure with
And frequency variation input combined inertia control module (3), obtain the 8th output quantity.
2. a kind of Wind turbines frequency modulation method as described in claim 1, which is characterized in that the ultralow wind speed range is
{vcut_in, v1, the v1=vcut_in+a*(vcut_out-vcut_in), the separation wind speed v of the ultralow wind speed and low wind speed1,
vcut_inTo cut wind speed, a is ultralow wind speed coefficient, and the range of a is { 0,0.3 }.
3. a kind of Wind turbines frequency modulation method as described in claim 1, which is characterized in that point of the low wind speed and middle wind speed
Boundary's point wind speed is v2, the wind speed range { v of the low wind speed1, v2, according to formula PMPPT=f (β, v, ω) is derived by v2,
In, ω is fan rotor maximum (top) speed ωmax, PMPPTFor maximum power value.
4. a kind of Wind turbines frequency modulation method as described in claim 1, which is characterized in that point of the middle wind speed and high wind speed
Boundary's point wind speed is v3, the wind speed range { v of the middle wind speed2, v3, according to formulaIt solves, wherein ωmaxFor wind
The machine rotor revolving speed upper limit, R are blower wind wheel radius, and n is gear-box gear ratio, λoptFor optimal tip speed ratio.
5. a kind of Wind turbines frequency modulation method as described in claim 1, which is characterized in that the wind speed range of the high wind speed is
{v3, vcut_out, the vcut_outFor cut-out wind speed.
6. a kind of Wind turbines frequency modulation device characterized by comprising
Wind speed determination module, for judging wind speed；
Flywheel energy storage frequency modulation control module (1), for carrying out frequency modulation to Wind turbines under ultralow wind speed and low wind speed mode；
Comprehensive off-load control module (2), for being adjusted under low wind speed, middle wind speed and high wind speed mode to Wind turbines
Frequently；
Combined inertia control module (3), for carrying out frequency modulation to Wind turbines under low wind speed, middle wind speed and high wind speed mode.
7. a kind of Wind turbines FM terminal equipment, which is characterized in that including processor, memory and be stored in the storage
In device and it is configured as the computer program executed by the processor, the processor is realized when executing the computer program
A kind of Wind turbines frequency modulation method as described in any one of claim 1 to 5.
8. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the computer readable storage medium in computer program operation is executed as weighed
Benefit require any one of 1 to 5 described in a kind of Wind turbines frequency modulation method.
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