CN107863783A - Double-fed wind power generator virtual synchronous control method - Google Patents
Double-fed wind power generator virtual synchronous control method Download PDFInfo
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- CN107863783A CN107863783A CN201711010991.1A CN201711010991A CN107863783A CN 107863783 A CN107863783 A CN 107863783A CN 201711010991 A CN201711010991 A CN 201711010991A CN 107863783 A CN107863783 A CN 107863783A
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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
- H02P9/007—Control circuits for doubly fed generators
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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
- H02P2101/00—Special adaptation of control arrangements for generators
- H02P2101/15—Special adaptation of control arrangements for generators for wind-driven turbines
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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
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- 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
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Abstract
The invention provides a kind of double-fed wind power generator virtual synchronous control method, including：The control of active power, reactive power is carried out to rotor-side converter and net side current transformer respectively, generates corresponding rotor-side three-phase modulations ripple and net side three-phase modulations ripple, wherein：Rotor-side three-phase modulations ripple is used to control rotor-side converter, so that double-fed wind power generator rotor side converter externally embodies voltage source characteristic, the inertia response characteristic and droop characteristic of similar synchronous generator is presented；Net side three-phase modulations ripple is used to control net to survey current transformer, stable DC busbar voltage, so that double-fed wind power generator net is surveyed current transformer and run according to unity power factor, the inertia response characteristic of similar synchronous generator is presented.The present invention designs virtual synchronous control strategy in current transformer aspect, avoids losing the peak power that can catch of blower fan, solves virtual synchronous control and blower fan can catch contradiction between peak power；Need not be in DC link shunt capacitance as energy snubber.
Description
Technical field
The present invention relates to generator control technical field, in particular it relates to double-fed wind power generator virtual synchronous controlling party
Method.
Background technology
As using wind-power electricity generation, photovoltaic generation as the rapid development of the clean energy resource of representative, power system passes through in the recent period
Go through from centralization and generate electricity to the transformation of distributed generation system, most of wind-driven generator by electronic power convertor and
Power network carries out the interaction of energy, realizes that unit power is run and reduces current distortion.Traditional synchronous generator and wind-power electricity generation
Machine is compared, and synchronous generator has friendly advantage natural to power network, can be maintained in grid voltage sags or interference be
System power-balance, voltage stabilization and frequency stabilization.How virtual synchronous motor (Virtual is carried out to double-fed blower fan
Synchronous Generator, VSG) control so that double-fed blower fan is with the inertia response similar with synchronous generator and together
Step characteristic becomes the main direction of development of next step double-fed air-blower control.
At present, dual feedback wind power generation system virtual synchronous control technology mainly has paddle control and current transformer to control two species
Type.In paddle control, additional virtual inertia part, passes through the control to pitch angle and rotating speed in maximum power tracking curve
Synchronous generator is simulated, but this method has clearly disadvantageous part, reality can not be exported by being mainly reflected in wind-driven generator
On peak power, but export by virtual inertia modification after peak power, using power output loss be cost acquisition
The virtual synchronous characteristic of blower fan.Equally, in current transformer control, by the improvement for wind electric converter control strategy, change is made
Stream device externally embodies the characteristic of virtual inertia, because the virtual synchronous control to current transformer is generally required at dc bus simultaneously
The buffering electric capacity of connection one provides virtual inertia, and the requirement to buffering electric capacity is very strict, therefore from a cost perspective, the control
Method processed equally has the defects of obvious.
Through retrieval
Zhou Tianpei, the research [J] that variable speed wind unit virtual inertia controls under high permeability, Proceedings of the CSEE：
Disclosed in the document of 2017 (2) using double fed induction generators gyrating mass block and be connected in parallel on rotor side converter and power network
Ultracapacitor between side converter is used as virtual inertia source simultaneously, realizes for " hiding " in double fed induction generators
Inertia is effectively utilized, and is controlled using self-adjusted fuzzy control strategy, in grid voltage sags or interference
System power balance, voltage stabilization and frequency stabilization can be maintained.But the method in title document off the net occurs weak
More serious stable sex chromosome mosaicism, and inertia response, Wu Fa are provided when the technical scheme can only be directed to power network fluctuation
Sufficient inertia response is provided when wind speed quickly changes.
Lee and Ming, Zhang Xiangyu, Wang Yi, the double-fed wind power generator group virtual inertia control for waiting to optimize based on power tracking
Technology [J] Proceedings of the CSEEs, 2012,32 (7)：32-39 document disclose the virtual rotation inertia of double-fed unit with
Rotational speed regulation and the relation of mains frequency change, propose the virtual inertia control strategy of double-fed fan motor unit.The control strategy leads to
The change of detection mains frequency is crossed to adjust maximum power tracking curve, so as to discharge the kinetic energy of double-fed unit " hiding ", to power network
Dynamic frequency is provided to support.But the control method in title document only proves that hair can be extracted by changing optimal performance graph
Motor inertia, but do not propose how to optimize modification performance graph, the also not support of related algorithm.When applying in wind
During power generator, the control method in title document can not export actual peak power, but export and pass through virtual inertia
Peak power after modification, the virtual synchronous characteristic of blower fan is obtained using power output loss as cost.
The content of the invention
For in the prior art the defects of, it is an object of the invention to provide a kind of control of double-fed wind power generator virtual synchronous
Method.
According to double-fed wind power generator virtual synchronous control method provided by the invention, including：Respectively to rotor-side unsteady flow
Device and net side current transformer carry out the control of active power, reactive power, generate corresponding rotor-side three-phase modulations ripple and net side three
Phase modulating wave, wherein：
The rotor-side three-phase modulations ripple is used to control rotor-side converter, so that double-fed wind power generator rotor side unsteady flow
Device externally embodies voltage source characteristic, and the inertia response characteristic and droop characteristic of similar synchronous generator is presented, and control generator is defeated
The power tracking optimal power curve gone out；
The net side three-phase modulations ripple is used to control net to survey current transformer, stable DC busbar voltage, so that double-fed wind-force is sent out
Motor net is surveyed current transformer and run according to unity power factor, and the inertia response characteristic of similar synchronous generator is presented.
Alternatively, the control of active power, reactive power is carried out to rotor-side converter, generates corresponding rotor-side three-phase
Modulating wave, including：
Rotating speed by tracking double-fed wind power generator obtains the peak power P of the double-fed wind power generatoropt；
According to the peak power PoptObtain the slippage angle θ of double-fed blower fanslip；According to the slippage angle of the double-fed blower fan
θslipGenerate rotor-side three-phase modulations ripple.
Alternatively, the control of active power, reactive power is carried out to net side current transformer, generates corresponding net side three-phase modulations
Ripple, including：
Input value using the difference of DC bus-bar voltage set-point and actual value as pi regulator, the pi regulator
Output valve surveys virtual synchronous generator mechanical torque T for netm_GSC；
According to the virtual synchronous generator mechanical torque Tm_GSCObtain net and survey modulating wave phase angle θGSC；
The given reactive power Q for surveying current transformer will be nettedg *The reactive power Q of current transformer is surveyed with netgDifference as PI adjust
The input value of device, the output valve of the pi regulator is net side three-phase modulations wave amplitude Emag_GSC, pass through net side three-phase modulations ripple
Amplitude Emag_GSCModulating wave phase angle θ is surveyed to netGSCAnd default phase shift values carry out sine operation, output net side three-phase is adjusted
Wave amplitude processed, to form net side three-phase modulations ripple.
Alternatively, the rotating speed by tracking double-fed wind power generator obtains the maximum work of the double-fed wind power generator
Rate Popt, including：
Pass through the rotational speed omega of double-fed wind power generator described in maximal power tracing MPPT module tracksr, pass through the double-fed
The rotational speed omega of wind-driven generatorrObtain peak power Popt。
Alternatively, it is described according to the peak power PoptObtain the slippage angle θ of double-fed blower fanslip, including：
According to double-fed wind power generator grid entry point given frequency f*Difference with the frequency f of reality output is by sagging amplification system
Number is KpEnhanced processing after, the peak power output P with the double-fed wind power generatoroptAddition is corrected maximum defeated
Go out power Poptref；
By the peak power output P of the amendmentoptrefVirtually turned by the mechanical gyrator equation of synchronous generator
Sub- electrical angle, slippage angle θ is obtained after the hypothetical rotor electrical angle and double-fed fan rotor angle are subtracted each otherslip；Wherein, it is synchronous
The mechanical gyrator equation of generator is as follows：
In formula：TmAnd TeRespectively machine torque and electromagnetic torque；ω and ωnIt is actual angular rate and specified electricity respectively
Angular speed；DpFor damped coefficient；J is the rotor moment of inertia of synchronous generator.
Alternatively, the slippage angle θ according to the double-fed blower fanslipRotor-side three-phase modulations ripple is generated, including：
By grid entry point given voltage Us *With grid entry point voltage UsInput value of the difference as pi regulator, the PI regulations
The output valve of device is rotor-side three-phase modulations wave amplitude Emag_RSC, pass through rotor-side three-phase modulations wave amplitude Emag_RSCTo described double
Present the slippage angle θ of blower fanslipAnd default phase shift values progress sine operation, output rotor side three-phase modulations wave amplitude,
To form rotor-side three-phase modulations ripple.
Compared with prior art, the present invention has following beneficial effect：
1st, double-fed wind power generator virtual synchronous control method provided by the invention, by setting wind power generator rotor side
Current transformer and net survey the virtual synchronous control strategy of current transformer so that current transformer externally embodies virtual Inertia Characteristics, is disturbed receiving
Can be with quick recovery system frequency and voltage stabilization after dynamic, the control strategy can be realized before without using buffering electric capacity
Put, reach rotor-side converter and net surveys the virtual synchronous control of current transformer.So as to design virtual synchronous in current transformer aspect
Control strategy, avoid losing the peak power that blower fan can be caught, maximum work can be caught by solving virtual synchronous control and blower fan
Contradiction between rate；Without, as energy snubber, reducing practical application cost in DC link shunt capacitance.
2nd, double-fed wind power generator virtual synchronous control method provided by the invention, rotor-side converter and net survey current transformer
It is virtual synchronous control, voltage source is presented as in electrical characteristic, is advantageous to weak stable operation off the net.
Brief description of the drawings
The detailed description made by reading with reference to the following drawings to non-limiting example, further feature of the invention,
Objects and advantages will become more apparent upon：
Fig. 1 is the theory diagram of double-fed wind power generator virtual synchronous control method provided by the invention；
Fig. 2 is rotor-side converter virtual synchronous control block diagram；
Fig. 3 is rotor-side converter active power VSG control flow charts；
Fig. 4 is rotor-side converter reactive power VSG control flow charts；
Fig. 5 surveys current transformer virtual synchronous control block diagram for net；
Fig. 6 is net side current transformer active power VSG control flow charts；
Fig. 7 is net side current transformer reactive power VSG control flow charts；
Fig. 8 surveys current transformer for net and starts the simultaneously DC bus-bar voltage of network simulation and changing over time for current transformer reactive power
Schematic diagram；
Fig. 9 is that wind speed changes the schematic diagram that lower rotor part side converter VSG control parameters change over time.
Embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some changes and improvements can also be made.These belong to the present invention
Protection domain.
Double-fed wind power generator is because by exchanging electrical excitation, active power and reactive power can be decoupled and carried out respectively
Control, the stator of double-fed wind power generator directly connects with power network, while rotor windings pass through a back-to-back (back-to-
Back) current transformer is connected with power network.In traditional double-fed wind power generator control strategy, it is steady that net surveys current transformer control DC voltage
Determine and realize that unity power factor is run；Peak power under the corresponding wind speed of rotor-side converter control blower fan output.
For problems of the prior art, double-fed wind power generator virtual synchronous control method provided by the invention,
By setting wind power generator rotor side current transformer and net to survey the virtual synchronous control strategy of current transformer so that current transformer is to ectosome
Now virtual Inertia Characteristics, can be with quick recovery system frequency and voltage stabilization after disturbance is received, and the control strategy can
Realize that on the premise of without using buffering electric capacity, reaching rotor-side converter and net surveys the virtual synchronous control of current transformer.
Fig. 1 is the theory diagram of double-fed wind power generator virtual synchronous control method provided by the invention, as shown in figure 1,
The control of active power, reactive power is carried out to rotor-side converter and net side current transformer respectively.Wherein, PrIt is active for rotor-side
Power, QrFor rotor-side reactive power, QgFor net side reactive power, QsFor stator reactive power, IrFor rotor current, IsFor stator
Electric current, IgCurrent transformer electric current, P are surveyed for netrFor rotor active power, PsFor stator active power, PgCurrent transformer wattful power is surveyed for net
Rate, XcDu/dt filter inductances, U are surveyed for netsFor grid entry point voltage, θsFor grid voltage phase-angle, PoptFor peak power, θslipFor
Slippage angle, θGSCModulating wave phase angle, U are surveyed for netdcFor DC bus-bar voltage.
Fig. 2 is rotor-side converter virtual synchronous control block diagram, as shown in Fig. 2 for rotor-side converter, is passed through first
Maximal power tracing (Maximum Power Point Tracking, MPPT) module tracks double-fed wind power generator (Double
Fed Induction Generator, DFIG) rotational speed omegar, obtain peak power Popt, secondly according to peak power Popt
Obtain the slippage angle θ of double-fed blower fanslip(being calculated by rotor-side active power VSG control modules), it is last according to
The slippage angle θ of double-fed blower fanslipGenerate three-phase modulations ripple (handling to obtain by reactive power VSG control modules).Wherein, ωrFor
Double-fed wind power generator rotating speed, urFor rotor-side converter three-phase modulations ripple, θrFor rotor phase angle.
Fig. 3 is rotor-side converter active power VSG control flow charts, as shown in figure 3, double-fed wind power generator grid entry point
Given frequency f*By sagging amplification coefficient it is K with the frequency f of reality output differencepEnhanced processing after, with the double-fed wind-force
The peak power output P of generatoroptIt is added the peak power output P correctedoptref.The peak power output of amendment
PoptrefHypothetical rotor electrical angle is obtained by the mechanical gyrator equation of synchronous generator, by the hypothetical rotor electrical angle and double
Feedback fan rotor angle obtains slippage angle θ after subtracting each otherslip.Wherein, Tm_RSCFor the virtual machine torque of virtual synchronous generator,
PrFor rotor-side converter active power, ωsFor synchronous rotational speed, ωRSCFor pusher side current transformer virtual synchronous generator angular speed,
ωbFor generator angular speed a reference value, DpFor damped coefficient, ωrFor double-fed generator rotating speed.
Specifically, the mechanical gyrator equation of synchronous generator is as follows：
In formula：TmAnd TeRespectively machine torque and electromagnetic torque；ω and ωnIt is actual angular rate and specified electricity respectively
Angular speed；DpFor damped coefficient；J is the rotor moment of inertia of synchronous generator.
Fig. 4 is rotor-side converter reactive power VSG control flow charts, as shown in figure 4, rotor-side converter reactive power
Reactive power-voltage (Q-U) droop control function in VSG control simulation synchronous generators, generation grid entry point voltage give Us *,
Grid entry point voltage stabilization is maintained by PI controllers, externally embodies preferable voltage source characteristic, the output of PI controllers is to turn
Sub- side three-phase modulations wave amplitude, and slippage angle θslipRotor-side three-phase modulations ripple is formed together.Wherein, Emag_RSCFor rotor-side three
Mutually modulation wave amplitude, uarFor rotor-side A phase modulating waves, ubrFor rotor-side B phase modulating waves, ucrFor rotor-side C phase modulating waves.
Fig. 5 surveys current transformer virtual synchronous control block diagram for net；Fig. 6 is net side current transformer active power VSG control flow charts,
As shown in fig. 6, double-fed wind power generator converter DC bus-bar voltage set-point Udc *With the DC bus-bar voltage U of reality outputdc
Input value of the difference as pi regulator, the output valve of the pi regulator controls as net side current transformer active power VSG
The input of module, θ is exported by the synchronous generator rotor equation of motionGSCSo that net, which surveys current transformer, can transmit inertia.Wherein,
UgFor line voltage, θgFor grid voltage phase-angle, θGSCModulating wave phase angle, u are surveyed for netrThree-phase modulations ripple, ω are surveyed for netGSCFor net
Current transformer virtual synchronous generator angular speed is surveyed, Δ ω surveys current transformer virtual synchronous generator frequency deviation for net.
Fig. 7 is net side current transformer reactive power VSG control flow charts, as shown in fig. 7, surveying the given idle of current transformer by netting
Power Qg *The reactive power Q of current transformer is surveyed with netgInput value of the difference as pi regulator, the output valve of the pi regulator
For Emag_GSC, pass through Emag_GSCTo θGSCAnd default phase shift values carry out sine operation, net side three-phase modulations wave amplitude is exported
Value, to form net side three-phase modulations ripple.
More detailed explanation is done to the method in the present invention with reference to specific embodiment.
According in the market 2MW Wind turbines parameters, mean wind speed 7m/s is constant, and grid short circuit ratio is 2, and corresponding power network is short
It is RTDS Real Time Digital Simulators that roadlock, which resists for 0.5pu, emulation platform, and double-fed blower fan is carried out according to grid-connected flow, is divided into three
In the stage, become oar constant rate period, net is surveyed current transformer startup stage and rotor-side converter startup stage, and net surveys current transformer and starts situation
As shown in figure 8 above, in the case where net surveys virtual synchronous VSG controls, net is surveyed DC bus-bar voltage immediate stability after current transformer starts and arrived
1.5kV, and it is 0 to net survey Reactive Power Control, realizes that unity power factor is run.
Fig. 9 is that wind speed changes the schematic diagram that changes over time of lower rotor part side converter VSG control parameters, choose it is above-mentioned certain
2MW double-fed fan motor units, rotor-side converter virtual synchronous control effect is verified in wind speed Spline smoothing, in simulation time 3s
When by wind speed from 7m/s steps be 8m/s, under rotor-side converter VSG control strategies, system active response wind speed change for
The influence of grid entry point voltage, the stable grid entry point output voltage of change of wave amplitude is modulated by rotor-side, embodies voltage-source type
The control feature of inverter.
It should be noted that the step in the double-fed wind power generator virtual synchronous control method provided by the invention,
Corresponding module, device, unit etc. in double-fed wind power generator virtual synchronous control system can be utilized to be achieved, this area
The technical scheme that technical staff is referred to the system realizes the step flow of methods described, i.e. the implementation in the system
Example can be regarded as realizing the preference of methods described, will not be described here.
One skilled in the art will appreciate that except realizing system provided by the invention in a manner of pure computer readable program code
And its beyond each device, completely can by by method and step carry out programming in logic come system provided by the invention and its
Each device is in the form of gate, switch, application specific integrated circuit, programmable logic controller (PLC) and embedded microcontroller etc.
To realize identical function.So system provided by the invention and its every device are considered a kind of hardware component, and it is right
What is included in it is used to realize that the device of various functions can also to be considered as the structure in hardware component；It will can also be used to realize respectively
The device of kind of function, which is considered as, not only can be the software module of implementation method but also can be the structure in hardware component.
The specific embodiment of the present invention is described above.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make a variety of changes or change within the scope of the claims, this not shadow
Ring the substantive content of the present invention.In the case where not conflicting, the feature in embodiments herein and embodiment can any phase
Mutually combination.
Claims (6)
- A kind of 1. double-fed wind power generator virtual synchronous control method, it is characterised in that including：Respectively to rotor-side converter and Net side current transformer carries out the control of active power, reactive power, generates corresponding rotor-side three-phase modulations ripple and net side three-phase and adjusts Ripple processed, wherein：The rotor-side three-phase modulations ripple is used to control rotor-side converter, so that double-fed wind power generator rotor side converter pair Outer embodiment voltage source characteristic, the inertia response characteristic and droop characteristic of similar synchronous generator is presented, control generator output Power tracking optimal power curve；The net side three-phase modulations ripple is used to control net to survey current transformer, stable DC busbar voltage, so that double-fed wind power generator Net is surveyed current transformer and run according to unity power factor, and the inertia response characteristic of similar synchronous generator is presented.
- 2. double-fed wind power generator virtual synchronous control method according to claim 1, it is characterised in that become to rotor-side The control that device carries out active power, reactive power is flowed, generates corresponding rotor-side three-phase modulations ripple, including：Rotating speed by tracking double-fed wind power generator obtains the peak power P of the double-fed wind power generatoropt；According to the peak power PoptObtain the slippage angle θ of double-fed blower fanslip；According to the slippage angle θ of the double-fed blower fanslipIt is raw Into rotor-side three-phase modulations ripple.
- 3. double-fed wind power generator virtual synchronous control method according to claim 1, it is characterised in that to net side unsteady flow Device carries out the control of active power, reactive power, generates corresponding net side three-phase modulations ripple, including：Input value using the difference of DC bus-bar voltage set-point and actual value as pi regulator, the output of the pi regulator It is worth and surveys virtual synchronous generator mechanical torque T for netm_GSC；According to the virtual synchronous generator mechanical torque Tm_GSCObtain net and survey modulating wave phase angle θGSC；The given reactive power Q for surveying current transformer will be nettedg *The reactive power Q of current transformer is surveyed with netgDifference as pi regulator Input value, the output valve of the pi regulator is net side three-phase modulations wave amplitude Emag_GSC, pass through net side three-phase modulations wave amplitude Emag_GSCModulating wave phase angle θ is surveyed to netGSCAnd default phase shift values carry out sine operation, net side three-phase modulations ripple is exported Amplitude, to form net side three-phase modulations ripple.
- 4. double-fed wind power generator virtual synchronous control method according to claim 2, it is characterised in that it is described by with The rotating speed of track double-fed wind power generator obtains the peak power P of the double-fed wind power generatoropt, including：Pass through the rotational speed omega of double-fed wind power generator described in maximal power tracing MPPT module tracksr, sent out by the double-fed wind-force The rotational speed omega of motorrObtain peak power Popt。
- 5. double-fed wind power generator virtual synchronous control method according to claim 2, it is characterised in that described according to institute State peak power PoptObtain the slippage angle θ of double-fed blower fanslip, including：According to double-fed wind power generator grid entry point given frequency f*Difference with the frequency f of reality output is by sagging amplification coefficient KpEnhanced processing after, the peak power output P with the double-fed wind power generatoroptIt is added the maximum work output corrected Rate Poptref；By the peak power output P of the amendmentoptrefHypothetical rotor electricity is obtained by the mechanical gyrator equation of synchronous generator Angle, slippage angle θ is obtained after the hypothetical rotor electrical angle and double-fed fan rotor angle are subtracted each otherslip；Wherein, synchronous generator The mechanical gyrator equation of machine is as follows：<mrow> <mi>J</mi> <mfrac> <mrow> <mi>d</mi> <mi>&omega;</mi> </mrow> <mrow> <mi>d</mi> <mi>t</mi> </mrow> </mfrac> <mo>=</mo> <msub> <mi>T</mi> <mi>m</mi> </msub> <mo>-</mo> <msub> <mi>T</mi> <mi>e</mi> </msub> <mo>-</mo> <msub> <mi>D</mi> <mi>p</mi> </msub> <mrow> <mo>(</mo> <mi>&omega;</mi> <mo>-</mo> <msub> <mi>&omega;</mi> <mi>n</mi> </msub> <mo>)</mo> </mrow> </mrow>In formula：TmAnd TeRespectively machine torque and electromagnetic torque；ω and ωnIt is actual angular rate and specified electric angle speed respectively Degree；DpFor damped coefficient；J is the rotor moment of inertia of synchronous generator.
- 6. double-fed wind power generator virtual synchronous control method according to claim 2, it is characterised in that described according to institute State the slippage angle θ of double-fed blower fanslipRotor-side three-phase modulations ripple is generated, including：By grid entry point given voltage Us *With grid entry point voltage UsInput value of the difference as pi regulator, the pi regulator Output valve is rotor-side three-phase modulations wave amplitude Emag_RSC, pass through rotor-side three-phase modulations wave amplitude Emag_RSCTo the double-fed wind The slippage angle θ of machineslipAnd default phase shift values carry out sine operation, output rotor side three-phase modulations wave amplitude, with shape Into rotor-side three-phase modulations ripple.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN110380451A (en) * | 2019-06-24 | 2019-10-25 | 上海交通大学 | A kind of double-fed fan motor unit with active inertia responding ability |
| CN111769593A (en) * | 2020-06-19 | 2020-10-13 | 上海交通大学 | Wind power plant simulation system, simulation method and simulation equipment for double-fed wind turbine generator |
| CN111969649A (en) * | 2020-08-03 | 2020-11-20 | 华中科技大学 | Control method and system for improving power transmission limit of double-fed fan in weak grid |
| CN112436558A (en) * | 2020-12-14 | 2021-03-02 | 山东大学 | Method and system for controlling virtual synchronous excitation magnetic field of doubly-fed fan |
| CN112865189A (en) * | 2021-04-13 | 2021-05-28 | 合肥工业大学 | Rotor angle compensation-based voltage source type double-fed wind generating set pre-synchronization method |
| CN114992047A (en) * | 2022-07-13 | 2022-09-02 | 华电电力科学研究院有限公司 | Wind generating set control method and related components |
| CN115378054A (en) * | 2021-07-19 | 2022-11-22 | 上海交通大学 | Hybrid control type full-power conversion wind turbine generator |
| CN117578632A (en) * | 2023-11-20 | 2024-02-20 | 南京工业职业技术大学 | Double-fed voltage source wind turbine generator system rotation speed-inertia combination control method |
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| CN109193768A (en) * | 2018-09-19 | 2019-01-11 | 清华大学 | The virtual synchronous machine control method and device of wind generator system |
| CN109217366A (en) * | 2018-09-26 | 2019-01-15 | 上海交通大学 | Total power Wind turbines control method and system |
| CN110380451A (en) * | 2019-06-24 | 2019-10-25 | 上海交通大学 | A kind of double-fed fan motor unit with active inertia responding ability |
| CN110380451B (en) * | 2019-06-24 | 2021-08-24 | 上海交通大学 | Double-fed wind turbine generator with active inertia response capability |
| CN111769593A (en) * | 2020-06-19 | 2020-10-13 | 上海交通大学 | Wind power plant simulation system, simulation method and simulation equipment for double-fed wind turbine generator |
| CN111969649A (en) * | 2020-08-03 | 2020-11-20 | 华中科技大学 | Control method and system for improving power transmission limit of double-fed fan in weak grid |
| CN112436558A (en) * | 2020-12-14 | 2021-03-02 | 山东大学 | Method and system for controlling virtual synchronous excitation magnetic field of doubly-fed fan |
| CN112436558B (en) * | 2020-12-14 | 2022-09-16 | 山东大学 | Method and system for controlling virtual synchronous excitation magnetic field of doubly-fed fan |
| CN112865189B (en) * | 2021-04-13 | 2022-06-07 | 合肥工业大学 | Voltage source type double-fed wind generating set pre-synchronization method based on rotor angle compensation |
| CN112865189A (en) * | 2021-04-13 | 2021-05-28 | 合肥工业大学 | Rotor angle compensation-based voltage source type double-fed wind generating set pre-synchronization method |
| CN115378054A (en) * | 2021-07-19 | 2022-11-22 | 上海交通大学 | Hybrid control type full-power conversion wind turbine generator |
| CN115378054B (en) * | 2021-07-19 | 2023-10-24 | 上海交通大学 | Hybrid control type full-power conversion wind turbine generator system |
| CN114992047A (en) * | 2022-07-13 | 2022-09-02 | 华电电力科学研究院有限公司 | Wind generating set control method and related components |
| CN114992047B (en) * | 2022-07-13 | 2024-05-28 | 华电电力科学研究院有限公司 | Control method of wind generating set and related components |
| CN117526403B (en) * | 2023-10-13 | 2024-06-07 | 南京工业职业技术大学 | Flexible grid-connected control method for voltage source wind turbine generator |
| CN117578632A (en) * | 2023-11-20 | 2024-02-20 | 南京工业职业技术大学 | Double-fed voltage source wind turbine generator system rotation speed-inertia combination control method |
| CN117578632B (en) * | 2023-11-20 | 2024-06-07 | 南京工业职业技术大学 | Double-fed voltage source wind turbine generator system rotation speed-inertia combination control method |
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