CN104485679B - It is applicable to self-balancing control method and the system of the wind storage integration of distribution - Google Patents
It is applicable to self-balancing control method and the system of the wind storage integration of distribution Download PDFInfo
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- CN104485679B CN104485679B CN201410692566.5A CN201410692566A CN104485679B CN 104485679 B CN104485679 B CN 104485679B CN 201410692566 A CN201410692566 A CN 201410692566A CN 104485679 B CN104485679 B CN 104485679B
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- 238000003860 storage Methods 0.000 title claims abstract description 116
- 238000009826 distribution Methods 0.000 title claims abstract description 60
- 230000010354 integration Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims description 20
- 230000005611 electricity Effects 0.000 claims description 10
- 238000004146 energy storage Methods 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims description 2
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- 239000004576 sand Substances 0.000 claims description 2
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- 238000010248 power generation Methods 0.000 description 7
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- 230000005540 biological transmission Effects 0.000 description 2
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Classifications
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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
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H02J3/386—
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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
Abstract
The invention discloses the self-balancing control method of a kind of wind storage integration being applicable to distribution, it includes step: measure each wind storage alternating voltage of integrated module, alternating current, DC voltage and tank voltage；Respectively each wind storage integrated module is carried out real power control and idle control obtains udgAnd uqg；According to the u obtaineddgAnd uqgAnd then obtain three-phase inversion controlled quentity controlled variable uag、ubg、ucg；According to three-phase inversion controlled quentity controlled variable u corresponding with each wind storage integrated moduleag、ubg、ucgParallel network reverse unit in each wind storage integrated module is controlled.Correspondingly, the invention also discloses the Self-balance Control System of a kind of wind storage integration being applicable to distribution.
Description
Technical field
The present invention relates to control method and the system of a kind of wind storage integration, particularly relate to a kind of wind storage one
The self-balancing control method changed and system.
Background technology
Rationally, develop by leaps and bounds regenerative resource, is to solve China's energy shortage, problem of environmental pollution
Fundamental way.Distributed power generation is to maximize with energy resource, and efficiency of energy utilization optimum turns to target
Novel energy system, has good environmental benefit, have small investment, take up an area little, the construction period is short,
The features such as energy-saving and environmental protection, its peak period powers more more economical than centrally connected power supply, effective, therefore distributed power generation
Can be as the useful supplement of China's centrally connected power supply.Distributed power generation can be that peak load carries as stand-by power supply
For electric power, improve power supply reliability；Can be that outlying district user, shopping centre and resident power；Can conduct
Local power supply save power transmission and transformation construction cost and investment, improve energy resource structure, promote electric power energy can hold
Supervention exhibition；Multiple service can be provided, including standby in the actual application of power system according to user's request
Generating, peak clipping capacity, base lotus generate electricity or meet region heat and electric load as cogeneration system simultaneously
Demand, and the auxiliary such as reactive power support, voltage support, Automatic Generation Control, black starting-up and spinning reserve
Service.
Distributed power generation refers to: in order to meet the needs of specific user, on-the-spot user or existing near electricity consumption
The generating set of the relatively low capacity that field is configured voluntarily by user or Independent power producer is invested.It both can be independent of
Public network directly provides electric energy to user, it is possible to access electrical network, jointly provides user with public electric wire net
Electric energy.It has the following characteristics that small and is distributed near load；Meet some special users'
Demand, the economical operation of the existing distribution of support；Power generation side without planning or non-central schedule type
Formula；Efficiency of energy utilization is higher or utilizes renewable energy power generation etc..
Distributed wind-powered electricity generation, energy storing and electricity generating quickly grow, and large-scale distributed wind-powered electricity generation, energy storage access distribution
Causing certain impact, in order to stabilize the fluctuation of distributed power generation, wind storage integration is preferably to utilize wind
Electricity, the mode of energy storing and electricity generating.But, numerous wind storage integrated apparatus accesses after distribution, they mutually it
Between control there are differences, quantity of state between them is when there are differences, and can affect wind storage integrated apparatus
Access the benefit of distribution.
Summary of the invention
It is an object of the invention to provide the self-balancing controlling party of a kind of wind storage integration being applicable to distribution
Method, the method can make each wind storage integrated module of distribution be automatically obtained the concordance of quantity of state, thus
The benefit of Appropriate application each wind storage integrated module, improves distribution operation level.
Another object of the present invention is to provide the self-balancing of a kind of wind storage integration being applicable to distribution to control
System, this system can reach above-mentioned functions in aforementioned manners.
To achieve these goals, the present invention proposes the most flat of a kind of wind storage integration being applicable to distribution
Weighing apparatus control method, it includes step:
Measure the alternating voltage u of each wind storage integrated moduleabc, alternating current iabc, measure each wind storage one
Change the DC voltage u of moduledc, measure tank voltage u of each wind storage integrated moduleb；From alternating voltage
uabcObtain amplitude u of alternating voltagesAnd phase theta；From alternating current iabcObtain the meritorious width of alternating current
Value idg, idle amplitude iqg；By iqgAmplitude u with alternating voltagesObtain the measured value Q of reactive powerg；
Each wind storage integrated module is carried out real power control and idle control, wherein:
Real power control step includes: by DC voltage set-point U*dcWith Σ aij(ubi-ubj) be added and obtain
And with dc voltage measurements udcDoing difference, it is defeated that this difference exports first after outer shroud proportional plus integral control
Go out value, by described first output valve and idgDoing difference, its difference exports second through internal ring proportional plus integral control
Output valve, by this second output valve and alternating voltage amplitude usIt is added, obtains udg；
Idle rate-determining steps includes: by the set-point Q* of reactive powergWith Σ aij(usi-usj) be added obtain
And measured value Q with described reactive powergDoing difference, this difference exports after outer shroud proportional plus integral control
3rd output valve；By described 3rd output valve and iqgDoing difference, its difference exports after internal ring proportional integral
uqg；
The ud that above-mentioned steps is obtainedgAnd uqgCarry out dq/abc coordinate transform, obtain three-phase inversion controlled quentity controlled variable
uag、ubg、ucg；Dq/abc coordinate transform is as follows:
According to three-phase inversion controlled quentity controlled variable u corresponding with each wind storage integrated moduleag、ubg、ucgEach wind is stored up
Parallel network reverse unit in integrated module is controlled；
Wherein, ubi、ubjIt is respectively corresponding i-th wind storage integrated module and jth wind storage integration mould
Described tank voltage u of blockbParameter, usi、usjBe respectively corresponding i-th wind storage integrated module and
Amplitude u of the described alternating voltage of jth wind storage integrated modulesParameter, aijRepresent the storage of jth wind
Integrated module passes to the weight added by information of i-th wind storage integrated module.
In technical solutions according to the invention, above-mentioned weight aijValue, a can be madeij=1/n, wherein n
Represent the total quantity of wind storage integrated module, say, that the power that each wind storage integrated module applies
Weight average is equal.
Alternatively, it is also possible to so determine aij:
Dc voltage measurements with each wind storage integrated module is minimum with DC voltage set-point difference sum
For target:
Wherein constraints is:
According to the above-mentioned minimum target of capacity volume variance summation, according to constraints, determine corresponding weight system
Number.
The self-balancing control method of the wind storage integration being applicable to distribution of the present invention, joins for control
In net, each wind stores up the consistent of the quantity of state between integrated module, improves distribution operation level.Each wind storage one
Change module access distribution time, its output is connected with each other and is connected to AC network, within ring proportional integral,
Outer shroud proportional integral and dq/abc coordinate are transformed to control device, control each wind storage integrated module also
Net inversion unit stores up the tank voltage difference between integrated module based on given DC voltage and each wind,
And the alternating voltage amplitude difference between given reactive power and each wind storage integrated module carries out defeated
Go out, final meet given, eliminate difference, thus realize wind storage integrated module properly functioning while,
The tank voltage of each wind storage integrated module and the balance of access point voltage, and the storage of each wind are automatically obtained it
The quantity of state of integrated module consistent.
Preferably, the wind be applicable to distribution of the present invention stores up the self-balancing control method of integration,
The proportionality coefficient of described internal ring proportional plus integral control is 1 ＜ proportionality coefficient ＜ 10, internal ring proportional plus integral control
Integral coefficient be 0.1 ＜ integral coefficient ＜ 1.
Preferably, the wind be applicable to distribution of the present invention stores up the self-balancing control method of integration,
The proportionality coefficient of described outer shroud proportional plus integral control is 0.2 ＜ proportionality coefficient ＜ 1, outer shroud proportional plus integral control
Integral coefficient be 0.01 ＜ integral coefficient ＜ 0.1.
Correspondingly, the self-balancing that present invention also offers a kind of wind storage integration being applicable to distribution controls system
Uniting, it includes that several wind stores up integrated module, and each wind storage integrated module all includes:
Wind-driven generator, it converts wind energy into electric energy output；
Rectification unit, its direct-flow input end is connected with the outfan of wind-driven generator；
Energy-storage units, it exports electric energy；
Charge/discharge unit, it is connected with the outfan of described energy-storage units, the direct current of described charge/discharge unit
Outfan is connected with the DC output end of rectification unit；
The DC output end of parallel network reverse unit, its dc bus and described rectification unit and charge/discharge unit
DC output end connect, the ac output end of parallel network reverse unit is used for connecting distribution；
DC voltage detecting device, it is connected with the DC output end of rectification unit, to detect DC voltage
udc；
AC current detection device, it is serially connected with the ac output end of described parallel network reverse unit, with detection
The alternating current i of its outputabc；
Alternating voltage detection device, it is connected with the ac output end of described parallel network reverse unit, with detection
The alternating voltage u of its outputabc；
Tank voltage detection device, it is connected with the outfan of described energy-storage units, to detect tank voltage
ub；
Controller, its respectively with described DC voltage detecting device, AC current detection device, alternating current
Pressure detection device and tank voltage detection device connect, described controller also with rectification unit, wind-power electricity generation
Machine, charge/discharge unit and parallel network reverse unit connect；
Described controller carries out real power control and idle control to parallel network reverse unit, wherein at real power control
Time: by DC voltage set-point U*dcWith Σ aij(ubi-ubj) it is added obtain and and dc voltage measurements
udcDoing difference, this difference exports the first output valve after outer shroud proportional plus integral control, by described first output
It is worth and according to iabcMeritorious amplitude i of the alternating current obtaineddgDoing difference, its difference is through internal ring proportional integral
Control output the second output valve, by this second output valve and according to alternating voltage uabcThe alternating voltage obtained
Amplitude usIt is added, obtains udg；When idle control: by the set-point Q* of reactive powergWith
Σaij(usi-usj) it is added that obtain and with reactive power measured value QgDoing difference, its difference is through outer shroud
The 3rd output valve is exported after proportional plus integral control；By described 3rd output valve and according to iabcThe exchange obtained
Idle amplitude i of electric currentqgDoing difference, its difference exports u after internal ring proportional integralqg；Described controller
According to udgAnd uqgObtain three-phase inversion controlled quentity controlled variable uag、ubg、ucg；Described controller is according to three-phase inversion
Controlled quentity controlled variable uag、ubg、ucgParallel network reverse unit is controlled；Wherein, ubi、ubjIt is respectively corresponding the
I wind storage integrated module and described tank voltage u of jth wind storage integrated modulebParameter, usi、
usjIt is respectively corresponding i-th wind storage integrated module and the described alternating current of jth wind storage integrated module
Amplitude u of pressuresParameter, aijRepresent that jth wind storage integrated module passes to i-th wind storage integration mould
Weight added by the information of block；
Several wind described storage each self-corresponding each controller communication each other of integrated module connects.
The Self-balance Control System of the wind storage integration being applicable to distribution of the present invention, connects during work
To AC network, can realize wind storage integrated module properly functioning while, be automatically obtained each wind storage one
The tank voltage of body module and the balance of access point voltage, and the quantity of state of each wind storage integrated module
Consistent.Its control principle and said method are identical, do not repeat them here.
Further, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
Described controller includes digital signal processor.
Further, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
Described DC voltage detecting device includes direct current voltage sensor.
Further, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
Described alternating voltage detection device includes AC voltage transformer.
Further, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
Described AC current detection device includes AC current sensor.
Further, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
Described tank voltage detection device is tank voltage sensor.
Further, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
Described energy-storage units includes accumulator or super capacitor.
Preferably, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
The proportionality coefficient of described internal ring proportional plus integral control is 1 ＜ proportionality coefficient ＜ 10, internal ring proportional plus integral control
Integral coefficient be 0.1 ＜ integral coefficient ＜ 1.
Preferably, the wind be applicable to distribution of the present invention stores up the Self-balance Control System of integration,
The proportionality coefficient of described outer shroud proportional plus integral control is 0.2 ＜ proportionality coefficient ＜ 1, outer shroud proportional plus integral control
Integral coefficient be 0.01 ＜ integral coefficient ＜ 0.1.
The self-balancing control method of the wind storage integration being applicable to distribution of the present invention and prior art phase
Ratio, has the advantages that
1) quantity of state consistent between each wind storage integrated module of distributed access distribution it has been automatically obtained
Property；
2) improve distribution operation level；
3) benefit of Appropriate application wind storage integrated module.
The Self-balance Control System of the wind storage integration being applicable to distribution of the present invention has above-mentioned equally
Effect.
Accompanying drawing explanation
Fig. 1 is that the Self-balance Control System of the wind storage integration being applicable to distribution of the present invention is in one
Structural representation under embodiment.
Fig. 2 is that the Self-balance Control System of the wind storage integration being applicable to distribution of the present invention is in one
The topological diagram of the rectification unit under embodiment.
Fig. 3 is that the Self-balance Control System of the wind storage integration being applicable to distribution of the present invention is in one
The topological diagram of the parallel network reverse unit under embodiment.
Fig. 4 is that the Self-balance Control System of the wind storage integration being applicable to distribution of the present invention is in one
The topological diagram of the charge/discharge unit under embodiment.
Fig. 5 is that the self-balancing control method of the wind storage integration being applicable to distribution of the present invention is in one
Control principle drawing under embodiment.
Detailed description of the invention
Below in conjunction with Figure of description and specific embodiment to the wind being applicable to distribution of the present invention
Self-balancing control method and the system of storage integration make further explanation.
Fig. 1 illustrates the Self-balance Control System of the wind storage integration being applicable to distribution of the present invention and exists
A kind of structure under embodiment.As it is shown in figure 1, the wind storage one being applicable to distribution in the present embodiment
It is connected to exchange distribution 11, comprising: several lead to each other during the Self-balance Control System work changed
The wind storage integrated module that news connect, each wind storage integrated module all includes: wind-driven generator 7；Rectification
Unit 2, its direct-flow input end is connected with the outfan of wind-driven generator 7；Accumulator 12；Discharge and recharge list
Unit 13, it is connected with the outfan of accumulator 12, the DC output end of charge/discharge unit 13 and rectification list
The DC output end of unit 2 connects；The direct current of parallel network reverse unit 3, its dc bus and rectification unit 2
The DC output end of outfan and charge/discharge unit 13 connects, its ac output end with exchange distribution 11
Ac bus 8 connects；Direct current voltage sensor 6, it is connected with the DC output end of rectification unit 2,
DC voltage u with detection rectification unit 2 outputdc；AC current sensor 5, it is serially connected with grid-connected inverse
Become the ac output end of unit 3, to detect the alternating current i of its outputabc；AC voltage transformer 4,
It is connected with the ac output end of parallel network reverse unit 3, to detect the alternating voltage u of its outputabc；Storage
Energy voltage sensor 14, it is connected with the outfan of accumulator 12, to detect tank voltage ub；Including
The controller 1 of digital signal processor, the DC voltage input end of controller 1 and direct current voltage sensor 6
Outfan connect, the outfan of the alternating current input of controller 1 and AC current sensor 5 is even
Connecing, the ac voltage input of controller 1 is connected with the outfan of AC voltage transformer 4, controller
Another DC voltage input end of 1 is connected with the outfan of tank voltage sensor 14, additionally, controller
The rectification of 1 controls end control corresponding with rectification unit 2 end and connects, and the parallel network reverse of controller 1 controls
Control end corresponding with parallel network reverse unit 3 is held to connect, the charge and discharge control end of controller 1 and discharge and recharge
Unit 13 controls end accordingly and connects, the code-disc signal input part of controller 1 and the code of wind-driven generator 7
Dish signal output part connects.
Fig. 2 shows the topological structure of the rectification unit 2 of the present embodiment.As in figure 2 it is shown, the present embodiment
Rectification unit 2 include six audions 21, connected mode as it can be seen, its input for exchange input AI,
It is output as dc bus positive pole+and dc bus negative pole-.
Fig. 3 shows the topological structure of the parallel network reverse unit 3 of the present embodiment.As it is shown on figure 3, this reality
The parallel network reverse unit 3 executing example includes six audions 31, and connected mode is as it can be seen, its input is straight
Stream bus positive pole+and dc bus negative pole-, it is output as exchange output AO.
Fig. 4 shows the topological structure of the charge/discharge unit 13 of the present embodiment.As in figure 2 it is shown, this enforcement
The charge/discharge unit 13 of example includes audion 131, diode 132, reactor 133 and electric capacity 134,
Connected mode is as it can be seen, it is output as direct current output VO.
Fig. 5 gives the self-balancing control method of the wind storage integration being applicable to distribution of the present invention and exists
A kind of control principle under embodiment, the control that the controller 1 of the i.e. the present embodiment of this control principle is used
Principle processed.
In conjunction with reference to Fig. 1-5, during the present embodiment work, first, controller 1 initializes, all
Power, voltage use perunit value with current parameters, set following parameter, give including setting DC voltage
Value U*dc, the set-point Q* of reactive powerg, the filter inductance value L of parallel network reverse unit 3g, interior chain rate
The proportionality coefficient (1～10) that example integral PI controls, the integral coefficient (0.1～1) that internal ring proportional integral PI controls；
The proportionality coefficient (0.2～1) that outer shroud proportional integral PI controls, the integration system that outer shroud proportional integral PI controls
Number (0.01～0.1)；State difference value weight coefficient aij(0～1).Afterwards, controller 1 passes through alternating voltage
Transformer 4, AC current sensor 5, direct current voltage sensor 6 and tank voltage sensor 14 are surveyed
Amount obtains the alternating voltage u of each wind storage integrated module in distributionabc, alternating current iabc, DC voltage
udcWith tank voltage ub；From alternating voltage uabcObtain amplitude u of alternating voltages, the phase theta of alternating current；
From alternating current iabcObtain meritorious amplitude i of alternating currentdg, idle amplitude iqg；By iqgAnd alternating voltage
Amplitude usObtain the measured value Q of reactive powerg.Each wind storage integrated module is exported by controller 1
Control, including controlling each wind storage integrated module by parallel network reverse unit 3 to distribution feed-in electric energy, enter
Row maximal power tracing controls, and by charge and discharge control, smooths wind-powered electricity generation so that be injected into distribution
Electric energy steady；Also include each wind storage integrated module is carried out self-balancing control, eliminate neighbouring wind and store up one
The difference of quantity of state between body module.Above-mentioned control includes parallel network reverse unit 3 is carried out real power control
With idle control, wherein when real power control: by DC voltage set-point U*dcWith Σ aij(ubi-ubj) phase
Add that obtain and with dc voltage measurements udcDoing difference, this difference is defeated after outer shroud proportional plus integral control
Go out the first output valve, by this first output valve and according to iabcMeritorious amplitude i of the alternating current obtaineddgDo
Difference, its difference exports the second output valve through internal ring proportional plus integral control, by this second output valve and basis
Alternating voltage uabcAmplitude u of the alternating voltage obtainedsIt is added, obtains udg；When idle control: by nothing
The set-point Q* of merit powergWith Σ aij(usi-usj) it is added that obtain and with reactive power measured value Qg
Doing difference, its difference exports the 3rd output valve after outer shroud proportional plus integral control；By described 3rd output valve
With according to iabcIdle amplitude i of the alternating current obtainedqgDoing difference, its difference is after internal ring proportional integral
Output uqg；Controller 1 is to udgAnd uqgCarry out dq/abc coordinate transform and obtain three-phase inversion controlled quentity controlled variable uag、
ubg、ucg；Controller 1 is according to three-phase inversion controlled quentity controlled variable uag、ubg、ucgParallel network reverse unit 3 is carried out
Control；Wherein, ubi、ubjIt is respectively corresponding i-th wind storage integrated module and the storage integration of jth wind
Tank voltage u of modulebParameter, if each wind storage integrated module tank voltage there is deviation, then
ubi≠ubj；usi、usjIt is respectively corresponding i-th wind storage integrated module and jth wind stores up integrated module
Amplitude u of alternating voltagesParameter, if each wind storage integrated module access point voltage there is deviation, then
usi≠usj；aijRepresent that jth wind storage integrated module is passed to added by the information of i-th wind storage integrated module
Weight, when jth wind storage integrated module is not to i-th wind storage integrated module transmission information,
aij=0.
Above-mentioned dq/abc coordinate transform is as follows:
In the present embodiment, aijFollowing method is used to determine: with the DC voltage of each wind storage integrated module
Measured value and the DC voltage set-point minimum target of capacity volume variance sum:
Wherein constraints is:
According to the above-mentioned minimum target of capacity volume variance summation, according to constraints, determine corresponding weight system
Number.
It should be noted that the listed above specific embodiment being only the present invention, it is clear that the invention is not restricted to
Above example, has the similar change of many therewith.If those skilled in the art is public from the present invention
All deformation that the content opened directly derives or associates, all should belong to protection scope of the present invention.
Claims (12)
1. the self-balancing control method of the wind storage integration that a kind is applicable to distribution, it is characterised in that include step:
Measure the alternating voltage u of each wind storage integrated moduleabc, alternating current iabc, measure the storage of each wind
The DC voltage u of integrated moduledc, measure tank voltage u of each wind storage integrated moduleb；From friendship
Stream voltage uabcObtain amplitude u of alternating voltagesAnd phase theta；From alternating current iabcObtain alternating current
Meritorious amplitude i of streamdg, idle amplitude iqg；By iqgAmplitude u with alternating voltagesObtain reactive power
Measured value Qg；
Each wind storage integrated module is carried out real power control and idle control, wherein:
Real power control step includes: by DC voltage set-point U*dcWith ∑ aij(ubi-ubj) be added obtain
And with dc voltage measurements udcDoing difference, this difference exports after outer shroud proportional plus integral control
One output valve, by described first output valve and idgDoing difference, its difference is through internal ring proportional plus integral control
Export the second output valve, by this second output valve and alternating voltage amplitude usIt is added, obtains udg；
Idle rate-determining steps includes: by the set-point Q* of reactive powergWith ∑ aij(usi-usj) be added
That obtain and with described reactive power measured value QgDoing difference, this difference is through outer shroud proportional integral control
The 3rd output valve is exported after system；By described 3rd output valve and iqgDoing difference, its difference is through interior chain rate
U is exported after example integrationqg；
The u that above-mentioned steps is obtaineddgAnd uqgCarry out dq/abc coordinate transform, obtain three-phase inversion control
Amount u processedag、ubg、ucg；Dq/abc coordinate transform is as follows:
According to three-phase inversion controlled quentity controlled variable u corresponding with each wind storage integrated moduleag、ubg、ucgTo each wind
Parallel network reverse unit in storage integrated module is controlled；
Wherein, ubi、ubjIt is respectively corresponding i-th wind storage integrated module and the storage integration of jth wind
Described tank voltage u of modulebParameter, usi、usjIt is respectively corresponding i-th wind storage integration mould
Amplitude u of the described alternating voltage of block and jth wind storage integrated modulesParameter, aijRepresent jth
Individual wind storage integrated module passes to the weight added by information of i-th wind storage integrated module；
Wherein, aijDetermination method be: with each wind storage integrated module dc voltage measurements udc
With DC voltage set-point U*dcThe minimum target of capacity volume variance sum:
Constraints is:
With the above-mentioned minimum target of capacity volume variance summation, according to constraints, determine corresponding weight system
Number aij。
It is applicable to the self-balancing control method of the wind storage integration of distribution, its feature the most as claimed in claim 1
Being, the proportionality coefficient of described internal ring proportional plus integral control is 1 ＜ proportionality coefficient ＜ 10, internal ring ratio
The integral coefficient of integration control is 0.1 ＜ integral coefficient ＜ 1.
It is applicable to the self-balancing control method of the wind storage integration of distribution, its feature the most as claimed in claim 1
Being, the proportionality coefficient of described outer shroud proportional plus integral control is 0.2 ＜ proportionality coefficient ＜ 1, outer chain rate
The integral coefficient of example integration control is 0.01 ＜ integral coefficient ＜ 0.1.
4. the Self-balance Control System of the wind storage integration being applicable to distribution, it is characterised in that include some
Individual wind storage integrated module, each wind storage integrated module all includes:
Wind-driven generator, it converts wind energy into electric energy output；
Rectification unit, its direct-flow input end is connected with the outfan of wind-driven generator；
Energy-storage units, it exports electric energy；
Charge/discharge unit, it is connected with the outfan of described energy-storage units, described charge/discharge unit straight
Stream outfan is connected with the DC output end of rectification unit；
The DC output end of parallel network reverse unit, its dc bus and described rectification unit and discharge and recharge list
The DC output end of unit connects, and the ac output end of parallel network reverse unit is used for connecting distribution；
DC voltage detecting device, it is connected with the DC output end of rectification unit, to detect unidirectional current
Pressure udc；
AC current detection device, it is serially connected with the ac output end of described parallel network reverse unit, with inspection
Survey the alternating current i of its outputabc；
Alternating voltage detection device, it is connected with the ac output end of described parallel network reverse unit, with inspection
Survey the alternating voltage u of its outputabc；
Tank voltage detection device, it is connected with the outfan of described energy-storage units, to detect energy storage electricity
Pressure ub；
Controller, its respectively with described DC voltage detecting device, AC current detection device, exchange
Voltage check device and tank voltage detection device connect, described controller also with rectification unit, wind-force
Electromotor, charge/discharge unit and parallel network reverse unit connect；
Described controller carries out real power control and idle control to parallel network reverse unit, is wherein having power control
Time processed: by DC voltage set-point U*dcWith ∑ aij(ubi-ubj) be added that obtain and survey with DC voltage
Value udcDoing difference, this difference exports the first output valve after outer shroud proportional plus integral control, by described
First output valve with according to iabcMeritorious amplitude i of the alternating current obtaineddgDoing difference, its difference is through interior
Ring proportional plus integral control exports the second output valve, by this second output valve and according to alternating voltage uabc
Amplitude u of the alternating voltage obtainedsIt is added, obtains udg；When idle control: by reactive power
Set-point Q*gWith ∑ aij(usi-usj) it is added that obtain and with reactive power measured value QgDo difference,
Its difference exports the 3rd output valve after outer shroud proportional plus integral control；By described 3rd output valve and root
According to iabcIdle amplitude i of the alternating current obtainedqgDoing difference, its difference is defeated after internal ring proportional integral
Go out uqg；Described controller is according to udgAnd uqgObtain three-phase inversion controlled quentity controlled variable uag、ubg、ucg；Institute
State controller according to three-phase inversion controlled quentity controlled variable uag、ubg、ucgParallel network reverse unit is controlled；Its
In, ubi、ubjIt is respectively corresponding i-th wind storage integrated module and jth wind stores up integrated module
Described tank voltage ubParameter, usi、usjIt is respectively corresponding i-th wind storage integrated module and the
Amplitude u of the described alternating voltage of j wind storage integrated modulesParameter, aijRepresent the storage of jth wind
Integrated module passes to the weight added by information of i-th wind storage integrated module；
Several wind described storage each self-corresponding each controller communication each other of integrated module connects；
Wherein, aijDetermination method be: with each wind storage integrated module dc voltage measurements udc
With DC voltage set-point U*dcThe minimum target of capacity volume variance sum:
Constraints is:
With the above-mentioned minimum target of capacity volume variance summation, according to constraints, determine corresponding weight system
Number aij。
It is applicable to the Self-balance Control System of the wind storage integration of distribution, its feature the most as claimed in claim 4
Being, described controller includes digital signal processor.
It is applicable to the Self-balance Control System of the wind storage integration of distribution, its feature the most as claimed in claim 4
Being, described DC voltage detecting device includes direct current voltage sensor.
It is applicable to the Self-balance Control System of the wind storage integration of distribution, its feature the most as claimed in claim 4
Being, described alternating voltage detection device includes AC voltage transformer.
It is applicable to the Self-balance Control System of the wind storage integration of distribution, its feature the most as claimed in claim 4
Being, described AC current detection device includes AC current sensor.
It is applicable to the Self-balance Control System of the wind storage integration of distribution, its feature the most as claimed in claim 4
Being, described tank voltage detection device is tank voltage sensor.
It is applicable to the Self-balance Control System of the wind storage integration of distribution, its feature the most as claimed in claim 4
Being, described energy-storage units includes accumulator or super capacitor.
The Self-balance Control System of the 11. wind storage integrations being applicable to distribution as claimed in claim 4, its feature
Being, the proportionality coefficient of described internal ring proportional plus integral control is 1 ＜ proportionality coefficient ＜ 10, internal ring ratio
The integral coefficient of integration control is 0.1 ＜ integral coefficient ＜ 1.
The Self-balance Control System of the 12. wind storage integrations being applicable to distribution as claimed in claim 4, its feature
Being, the proportionality coefficient of described outer shroud proportional plus integral control is 0.2 ＜ proportionality coefficient ＜ 1, outer chain rate
The integral coefficient of example integration control is 0.01 ＜ integral coefficient ＜ 0.1.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104485686A (en) * | 2014-11-26 | 2015-04-01 | 上海载物能源科技有限公司 | Wind and solar integrated self-balancing control method and system applicable to distribution network |
| CN104485685A (en) * | 2014-11-26 | 2015-04-01 | 上海载物能源科技有限公司 | Solar and storage integrated self-balancing control method and system applicable to distribution network |
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| CN102570489A (en) * | 2012-02-29 | 2012-07-11 | 中国南方电网有限责任公司调峰调频发电公司 | Dynamic power coordination control method for battery energy storage system |
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| JPWO2011074661A1 (en) * | 2009-12-17 | 2013-05-02 | 三洋電機株式会社 | Charge / discharge system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104485686A (en) * | 2014-11-26 | 2015-04-01 | 上海载物能源科技有限公司 | Wind and solar integrated self-balancing control method and system applicable to distribution network |
| CN104485685A (en) * | 2014-11-26 | 2015-04-01 | 上海载物能源科技有限公司 | Solar and storage integrated self-balancing control method and system applicable to distribution network |
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