CN106786673A - The suppressing method and device of double-fed blower fan compensated transmission system subsynchronous resonance - Google Patents
The suppressing method and device of double-fed blower fan compensated transmission system subsynchronous resonance Download PDFInfo
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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
Abstract
The present invention provides a kind of suppressing method and device of double-fed blower fan compensated transmission system subsynchronous resonance, and the method includes：Double-fed blower fan compensated transmission system electric current is converted into the current component under stationary rotor α β coordinate systems；Ratio resonance control is carried out to double-fed blower fan compensated transmission system, the resonant frequency point that regulation ratio resonance is controlled is the subsynchronous frequency of the current component under stationary rotor α β coordinate systems, the subsynchronous resonance from double-fed blower fan compensated transmission system described in blower fan lateral inhibition.Ratio resonance control based under stationary rotor coordinate system of the invention can simplify calculating, improve computational efficiency, from blower fan lateral inhibition subsynchronous resonance, implement flexible, short implementation cycle.
Description
Technical field
The present invention relates to technical field of electric power, more particularly to a kind of suppression of double-fed blower fan compensated transmission system subsynchronous resonance
Method and device processed.
Background technology
Large Copacity long distance power transmission is the main feature of China's wind-power electricity generation development, and it is lifting ability of supplying electric power that wind-powered electricity generation string is mended
Important means, has obtained widely applying at home.Cluster wind-powered electricity generation is complicated through the operation characteristic that compensated transmission system is sent out, may
Face subsynchronous resonance equivalent risk；It was same all successively to there is wind-powered electricity generation time in texas,U.S, China North China somewhere, northeast somewhere etc.
Step resonance phenomena (Sub-synchronous Resonance, SSR), wherein North China are because wind-electricity integration scale is big, resonance hair
Raw often and most typicalness.The modeling of wind-powered electricity generation compensated transmission system subsynchronous resonance, Analysis on Mechanism and resonance suppress to turn into
Problem demanding prompt solution.In terms of subsynchronous resonance mechanism, document " Modeling and Stability Analysis of a
DFIG-Based Wind-Power Generator Interfaced With a Series-Compensated Line”
(IEEE Transactions on Power Delivery, 2009,24 (3):1504-1514)、“Mitigating SSR
Using DFIG-Based Wind Generation " (IEEE Trans.on sustainable energy.2012,3 (3):
349-358), " the subsynchronous control interaction mechanism and characteristic research of double-fed wind power generator " (electrotechnics journal, 2013
Year, 28 (12)：142-149) to mending transmission of electricity in double-fed blower fan (Double-fed induction generation, DFIG) string
Three kinds of mechanism of system subsynchronous resonance are analyzed, and " the double-fed blower fan based on rotor Rotative moment Analytics is subsynchronous for document
Resonance mechanism is studied " (Proceedings of the CSEE, 35 (19) in 2015：4861-4869) with " double-fed wind power generator string is mended
The subsynchronous specificity analysis of the full operation area of transmission system " (electric power network technique, 38 (9) in 2014：2429-2433) to wind-powered electricity generation string
The characteristic and influence factor for mending transmission system subsynchronous resonance are analyzed.In terms of modeling, document " mend defeated by double-fed blower fan string
Electric system subsynchronous resonance influence factor and stability region are analyzed " (electric power network technique, 39 (1) in 2015：Pass through in 189-193)
Set up impedance model to analyze wind-powered electricity generation string benefit subsynchronous resonance phenomenon, determine series compensation degree, wind speed and current control parameter
Influence to subsynchronous resonance.In terms of braking measure, document " Impedance-Model-Based SSR Analysis for
Type 3 Wind Generator and Series-Compensated Network”(IEEE Transactions on
Energy Conversion,2012,27(4):984-991) with " Modal Analysis of a DFIG-Based Wind
Farm Interfaced With a Series Compensated Network”(IEEE Transactions on
Energy Conversion,2011,26(4):1010-1020) propose active, Reactive-power control based on rotor-side converter
Method, document " Modal analysis of grid-connected doubly fed induction generators "
(IEEE Transactions on Energy Conversion,2007,22(3):728-736) suppressed using STATCOM
SSR and damping power system oscillation, and nonlinear optimization design procedure is used for supplementary subsynchronous damping control ring in STATCOM
Design.Document " On Active/Reactive Power Modulation of DFIG-Based Wind Generation
for Interarea Oscillation Damping”(IEEE Transactions on Energy Conversion,
2011,26(2):513-521) by the use of arbor angular speed as input signal, the additional longitudinal forces of double-fed blower fan are realized.Text
Offer " Control of DFIG-Based Wind Generation to Improve Interarea Oscillation
Damping”(IEEE Transactions on Energy Conversion,2009,24(2):415-422) by improving
The control strategy of UPFC.Increase propeller pitch angle additional control to realize the suppression to subsynchronous resonance.Document " Novel STATCOM
Controller for Mitigating SSR and Damping Power System Oscillations in a
Series Compensated Wind Park”(IEEE Trans.on Power Electronics,2010,25(2):429-
441) active power regulation is carried out according to rotor angular phase difference, so as to realize the damping control of double-fed blower fan.
The realization of additional longitudinal forces is, it is necessary to by the extraction of antihunt signal, such as filtering, phase shift also needs the control of damping
Device processed, realizes complicated.There is a problem of calculating complicated under DQ coordinate systems, on the one hand the problem is because coordinate transform causes
, carry out ABC coordinates to the change of DQ coordinates；On the other hand it is that in conversion process, resonant frequency can also exist with conversion
Two kinds of frequency components, that is, two resonance frequency controllers are needed, calculating complicated, inconvenience is realized.Grid side concentrated restraining is certain
Be than suppressing more suitable inside wind power plant, it is more economical, but concentrated restraining measure implementation, influence larger, the implementation cycle is more long.
The content of the invention
The present invention provides a kind of suppressing method and device of double-fed blower fan compensated transmission system subsynchronous resonance, existing to solve
There is one or more missing in technology.
The present invention provides a kind of suppressing method of double-fed blower fan compensated transmission system subsynchronous resonance, including：By double-fed wind
Machine compensated transmission system electric current is converted into the current component under stationary rotor α β coordinate systems；Double-fed blower fan compensated transmission system is entered
Row ratio resonance is controlled, and the resonant frequency point that regulation ratio resonance is controlled is secondary for the current component under stationary rotor α β coordinate systems
Synchronizing frequency, the subsynchronous resonance from double-fed blower fan compensated transmission system described in blower fan lateral inhibition.
In one embodiment, the transmission function that the ratio resonance is controlled is：
Wherein, GprThe transmission function of expression ratio resonant controller, kpThe proportionality coefficient of expression ratio resonant controller, kr
Represent resonance coefficient, ωcLow-pass cut-off frequencies are represented, s represents that the plural form of the transmission function of ratio resonant controller becomes certainly
Amount, ω0Represent resonant frequency.
In one embodiment, the method also includes：By keeping the proportionality coefficient k of ratio resonant controllerpAnd resonance
Coefficient krLow-pass cut-off frequencies ω is adjusted in the case of constantcOr keeping the proportionality coefficient k of ratio resonant controllerpWith it is low
Logical cut-off frequency ωcResonance coefficient k is adjusted in the case of constantrObtain several double-fed blower fan strings and mend transmission of electricity resonant control system
Closed loop Bode diagram, and determine that the ratio resonance of the double-fed blower fan compensated transmission system controls ginseng according to the closed loop Bode diagram for obtaining
Number, is mended with improving the double-fed blower fan compensated transmission system simultaneously in the gain of the resonant frequency point and the double-fed blower fan string
The stability of transmission system.
In one embodiment, the proportionality coefficient k of ratio resonant controllerp=1.6, resonance coefficient kr=5, low pass cutoff is frequently
Rate ωc=10rad/s.
The present invention also provides a kind of restraining device of double-fed blower fan compensated transmission system subsynchronous resonance, including：Rotor is quiet
Only coordinate system current component acquiring unit, for performing：Double-fed blower fan compensated transmission system electric current is converted into stationary rotor α β
Current component under coordinate system；Subsynchronous resonance suppresses unit, for performing：Ratio is carried out to double-fed blower fan compensated transmission system
Resonance is controlled, and the resonant frequency point that regulation ratio resonance is controlled is the subsynchronous frequency of the current component under stationary rotor α β coordinate systems
Rate, the subsynchronous resonance from double-fed blower fan compensated transmission system described in blower fan lateral inhibition.
In one embodiment, the subsynchronous resonance suppresses unit, is additionally operable to perform：
The transmission function that the ratio resonance is controlled is：
Wherein, GprThe transmission function of expression ratio resonant controller, kpThe proportionality coefficient of expression ratio resonant controller, kr
Represent resonance coefficient, ωcLow-pass cut-off frequencies are represented, s represents that the plural form of the transmission function of ratio resonant controller becomes certainly
Amount, ω0Represent resonant frequency.
In one embodiment, the device also includes：Ratio resonance control parameter adjustment unit, for performing：By protecting
Hold the proportionality coefficient k of ratio resonant controllerpWith resonance coefficient krLow-pass cut-off frequencies ω is adjusted in the case of constantcOr
The proportionality coefficient k of holding ratio resonant controllerpWith low-pass cut-off frequencies ωcResonance coefficient k is adjusted in the case of constantrObtain
Several double-fed blower fan strings mend the closed loop Bode diagram of transmission of electricity resonant control system, and are determined according to the closed loop Bode diagram for obtaining described double
The ratio resonance control parameter of blower fan compensated transmission system is presented, to improve the double-fed blower fan compensated transmission system described simultaneously
The gain of resonant frequency point and the stability of the double-fed blower fan compensated transmission system.
In one embodiment, the ratio resonance control parameter adjustment unit is additionally operable to perform：Ratio resonant controller
Proportionality coefficient kp=1.6, resonance coefficient kr=5, low-pass cut-off frequencies ωc=10rad/s.
The suppressing method and device of the double-fed blower fan compensated transmission system subsynchronous resonance of the embodiment of the present invention, relative to DQ
Resonance control under coordinate system, is to transform to α β coordinates, without regard to from ABC coordinates to DQ coordinate transforms, can be simplified with this
Calculate, and, the embodiment of the present invention only has a kind of frequency component, in the absence of two kinds of frequency components, it is not necessary to which two resonance frequencies are controlled
Device processed, a controller can be omitted with this, therefore can simplify calculating, improve computational efficiency.The embodiment of the present invention is from blower fan
Subsynchronous resonance in lateral inhibition double-fed blower fan compensated transmission system, compared with power network lateral inhibition, the transformation of blower fan side is more clever
Flexible, transformation convenience, low cost, short implementation cycle are implemented in activity, the suppression of blower fan side, according to systems organization and can design,
The risk of subsynchronous resonance just can be fundamentally avoided with suppression function when blower fan networks, the cost of suppression is minimum.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.In the accompanying drawings：
Fig. 1 is that the flow of the suppressing method of the double-fed blower fan compensated transmission system subsynchronous resonance of the embodiment of the present invention is illustrated
Figure；
Fig. 2 is the flow of the suppressing method of the double-fed blower fan compensated transmission system subsynchronous resonance of another embodiment of the present invention
Schematic diagram；
Fig. 3 is the structural representation of double-fed blower fan compensated transmission system in one embodiment of the invention；
Fig. 4 is that stator voltage in one embodiment of the invention according to double-fed blower fan, rotor voltage and flux linkage equations are obtained
The equivalent circuit of the double-fed blower fan based on α β coordinate systems；
Fig. 5 is the control system control principle schematic diagram under double-fed blower fan α β coordinate systems in one embodiment of the invention；
Fig. 6 is the control principle schematic diagram of ratio resonant controller in one embodiment of the invention；
Fig. 7 and Fig. 8 are respectively to keep the proportionality coefficient k of ratio resonant controller in one embodiment of the inventionpAnd resonance
Coefficient krLow-pass cut-off frequencies ω is adjusted in the case of constantcThe double-fed blower fan string of acquisition mends the closed loop of transmission of electricity resonant control system
The amplitude and phase of Bode diagram；
Fig. 9 and Figure 10 are respectively to keep the proportionality coefficient k of ratio resonant controller in one embodiment of the inventionpAnd low pass
Cut-off frequency ωcResonance coefficient k is adjusted in the case of constantrThe double-fed blower fan string of acquisition mends the closed loop of transmission of electricity resonant control system
The amplitude and phase of Bode diagram；
Figure 11 and Figure 12 are respectively the failure wave-recording voltage of wind-powered electricity generation string complement system subsynchronous resonance in one embodiment of the invention
Data and current data；
Simulated current waveform and voltage that Figure 13 and Figure 14 are obtained when being and not taking braking measure in one embodiment of the invention
Waveform；
Double-fed blower fan α shaft currents and β axles when Figure 15 and Figure 16 are respectively subsynchronous resonances in one embodiment of the invention is double
Present the reference current and feedback current of air-blower control inner ring；
Figure 17 is the spectrogram for carrying out fft analysis in one embodiment of the invention to the electric current under α β coordinates；
Figure 18 and Figure 19 are respectively the current simulations waveform and voltage emulation ripple obtained using the method for the embodiment of the present invention
Shape；
Figure 20 and Figure 21 are the reference current and feedback current under the α axles and β axles of one embodiment of the invention；
Figure 22 is the structure of the restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance of one embodiment of the invention
Schematic diagram；
Figure 23 is the knot of the restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance of another embodiment of the present invention
Structure schematic diagram.
Specific embodiment
For the purpose, technical scheme and advantage for making the embodiment of the present invention become more apparent, below in conjunction with the accompanying drawings to this hair
Bright embodiment is described in further details.Here, schematic description and description of the invention is used to explain the present invention, but simultaneously
It is not as a limitation of the invention.
Complexity is realized for existing additional longitudinal forces, controls to calculate complicated, inconvenience realization, grid side collection under DQ coordinate systems
The implementation influence of middle braking measure is larger, the problems such as the implementation cycle is more long, the present invention provide an a kind of double-fed blower fan string mend it is defeated
The suppressing method of electric system subsynchronous resonance, can simplify calculating, flexibly implement, shorten the implementation cycle.
Fig. 1 is that the flow of the suppressing method of the double-fed blower fan compensated transmission system subsynchronous resonance of the embodiment of the present invention is illustrated
Figure.As shown in figure 1, the suppressing method of the double-fed blower fan compensated transmission system subsynchronous resonance of the embodiment of the present invention, it may include step
Suddenly：
S110：Double-fed blower fan compensated transmission system electric current is converted into the current component under stationary rotor α β coordinate systems；
S120：Ratio resonance control is carried out to double-fed blower fan compensated transmission system, the resonance of regulation ratio resonance control is frequently
Rate point is the subsynchronous frequency of the current component under stationary rotor α β coordinate systems, is mended from double-fed blower fan string described in blower fan lateral inhibition defeated
Subsynchronous resonance in electric system.
In above-mentioned steps S110, can be by double-fed blower fan compensated transmission system electric current by abc- α β coordinate transforms, conversion
It is the current component under rest frame.
In above-mentioned steps S120, for existing double-fed blower fan PI control strategy limited bandwidths, in string mends transmission of electricity, it is impossible to
The problem being controlled to subsynchronous resonance frequency component, such as can be improved, to subsynchronous frequency to double-fed air-blower control strategy
Rate component carries out ratio resonance control, and the resonant frequency point that regulation ratio resonance is controlled is subsynchronous under stationary rotor α β coordinates
Frequency, the subsynchronous resonance from blower fan lateral inhibition double-fed blower fan compensated transmission system.Based on the ratio under stationary rotor coordinate system
Example integral resonance control, can be for Sub-synchronous Resonance present in double-fed blower fan compensated transmission system, first, by setting up
The Mathematical Modeling of double-fed blower fan compensated transmission system, derives its transmission function；Then, carried by the analysis to transmission function
Go out.
Proposed based on α β components under stationary rotor coordinate system by double-fed blower fan compensated transmission system transfer function analysis
The control of ratio resonance, can realize under rest frame to the regulation of the floating of subsynchronous signal, be introduced into double-fed wind
Among current transformer electric current regulation in machine compensated transmission system, make the resonant frequency point that ratio resonance is controlled same with secondary by design
α β components under synchronizing frequency stationary rotor coordinate match, you can control of the enhancing double-fed blower fan to system subsynchronous resonance component
System, the suppression to subsynchronous resonance is realized from blower fan side.
The embodiment of the present invention, is to transform to α β coordinates, without regard to from ABC relative to the resonance control under DQ coordinate systems
Coordinate can simplify calculating to DQ coordinate transforms with this, and, the embodiment of the present invention only has a kind of frequency component, in the absence of two
Plant frequency component, it is not necessary to two resonance frequency controllers, a controller can be omitted with this, therefore calculating can be simplified, improve
Computational efficiency.The embodiment of the present invention is from the subsynchronous resonance in blower fan lateral inhibition double-fed blower fan compensated transmission system, with power network
Lateral inhibition is compared, and the transformation of blower fan side has more flexibility, and flexible, transformation convenience, low cost, implementation are implemented in the suppression of blower fan side
Cycle is short.
In some embodiments, the transmission function that the ratio resonance is controlled is：
Wherein, GprThe transmission function of expression ratio resonant controller, kpThe proportionality coefficient of expression ratio resonant controller, kr
Represent resonance coefficient, ωcLow-pass cut-off frequencies are represented, s represents that the plural form of the transmission function of ratio resonant controller becomes certainly
Amount, ω0Represent resonant frequency.
Fig. 2 is the flow of the suppressing method of the double-fed blower fan compensated transmission system subsynchronous resonance of another embodiment of the present invention
Schematic diagram.As shown in Fig. 2 the suppressing method of the double-fed blower fan compensated transmission system subsynchronous resonance shown in Fig. 1, may also include step
Suddenly：
S130：By keeping the proportionality coefficient k of ratio resonant controllerpWith resonance coefficient krAdjusted in the case of constant
Low-pass cut-off frequencies ωcOr keeping the proportionality coefficient k of ratio resonant controllerpWith low-pass cut-off frequencies ωcConstant situation
Lower regulation resonance coefficient krThe closed loop Bode diagram that several double-fed blower fan strings mend transmission of electricity resonant control system is obtained, and according to acquisition
Closed loop Bode diagram determines the ratio resonance control parameter of the double-fed blower fan compensated transmission system, to improve the double-fed wind simultaneously
Machine compensated transmission system is in the gain of the resonant frequency point and the stability of the double-fed blower fan compensated transmission system.
The present embodiment, more preferably ratio resonance control parameter, such as proportionality coefficient can be obtained by above-mentioned steps S130
kp, resonance coefficient kr, low-pass cut-off frequencies ωc, can simultaneously meet increasing of the double-fed blower fan compensated transmission system in resonant frequency point
The stability of benefit and double-fed blower fan compensated transmission system.
In some embodiments, the proportionality coefficient k of ratio resonant controllerp=1.6, resonance coefficient kr=5, low pass cutoff is frequently
Rate ωc=10rad/s.
1 sets up double-fed blower fan compensated transmission system Mathematical Modeling
1.1 double-fed blower fan compensated transmission systems
Fig. 3 is the structural representation of double-fed blower fan compensated transmission system in one embodiment of the invention.As shown in figure 3, this is
System includes shafting, influence generator 301, net side current transformer (Grid Side Converter, GSC) 302, rotor-side converter
(Rotor Side Converter, RSC) 303, current transformer DC link 304, main controller 307, net side current transformer controller
305th, rotor-side converter controller 306 and its box type transformer.In figure 3, usIt is stator voltage, isIt is stator current, inFor
Net side current transformer electric current, irIt is rotor current transformer electric current, udcIt is DC capacitor voltage.
In some embodiments, based on the stator voltage of double-fed blower fan, rotor voltage and magnetic linkage under α β two-phase rest frames
Equation can be：
In formula (1), Usαβ=usα+jusβ, Urαβ=urα+jurβ, Isαβ=isα+jisβ, Irαβ=irα+jirβ, Ψsαβ=
ψsα+jψsβ, Ψrαβ=ψrα+jψrβ。
Wherein, UsαβThe stator voltage of double-fed blower fan, I under expression α β two-phase rest framessαβRepresent the α static seats of β two-phases
The stator current of the lower double-fed blower fan of mark system, UrαβThe rotor voltage of double-fed blower fan, I under expression α β two-phase rest framesrαβRepresent α
The rotor current of double-fed blower fan, Ψ under β two-phase rest framessαβThe stator of double-fed blower fan under expression α β two-phase rest frames
Magnetic linkage, ΨrαβThe rotor flux of double-fed blower fan under expression α β two-phase rest frames.usαAnd usβRespectively stator voltage α axles divide
Amount and beta -axis component；isαAnd jisβThe respectively α axles component and beta -axis component of stator current；ψsαAnd ψsβThe respectively α of stator magnetic linkage
Axle component and beta -axis component；RsIt is stator resistance, Ls、LrAnd LmRespectively stator inductance, inductor rotor and mutual inductance；urαAnd urβRespectively
It is rotor voltage α axles component and beta -axis component；irαAnd irβThe respectively α axles component and beta -axis component of rotor current；ψrαAnd ψrβRespectively
It is the α axles component and beta -axis component of rotor flux；RrIt is rotor resistance；ωrIt is rotor speed；P is differential operator.
In some embodiments, by based on the stator voltage of double-fed blower fan, rotor voltage and magnetic under α β two-phase rest frames
Chain equation (formula (1)) can obtain the equivalent circuit based on double-fed blower fan under α β coordinate systems.Fig. 4 is root in one embodiment of the invention
The equivalent electric of the double-fed blower fan based on α β coordinate systems obtained according to the stator voltage of double-fed blower fan, rotor voltage and flux linkage equations
Road.As shown in figure 4, the equivalent circuit diagram indicates the relation between each amount in above-mentioned formula (1).
In some embodiments, the equivalent circuit according to the double-fed blower fan based on α β coordinate systems can be obtained based on α β coordinate systems
Under rotor voltage equation.For example, the equivalent circuit gained of the double-fed blower fan based on α β coordinate systems as shown in Figure 4 is sat based on α β
Mark system under rotor voltage equation can be：
Urαβ=(Rr-jωrδLr)Irαβ+δLrp Irαβ+(Lm/Ls)(Usαβ-RsIsαβ-jωrΨsαβ) (2)
Wherein, δ=1-Lm 2/LrLsIt is the magnetic leakage factor of double feedback electric engine.
Double-fed blower fan control system under 1.2 α β coordinate systems
In formula (2), by δ Lrp IrαβControlled to substitute with ratio, can obtain the control system under double-fed blower fan α β coordinate systems
System.Fig. 5 is the control system control principle schematic diagram under double-fed blower fan α β coordinate systems in one embodiment of the invention.As shown in Figure 5.
Wherein, inner ring is current tracking, outer shroud difference respective rotor rotating speed control and the idle control of stator.The effect of rotor-side converter
Two aspects are broadly divided into, are on the one hand the rotating speed by controlling DFIG, realize maximum power tracing, and then control DFIG stators
The active power that side is sent；On the other hand it is the electric current that excitation component is provided to the rotor of DFIG, such that it is able to adjust DFIG
Stator side reactive power.In Figure 5, Irabc、UsabcAnd IsabcRespectively represent abc coordinate systems under rotor current, stator voltage and
Stator current,Represent phase-modulation, SVM representation space Vector Modulations, kpIt is inner ring PI controllers (pi controller)
Proportionality coefficient, Irαβ *It is the current reference value of outer shroud generation, rotor voltage reference value can be：
Urαβ *=(Rr-jωrδLr)Irαβ+δLrUkprαβ+(Lm/Lr)(Usαβ-Rs Isαβ-jωrΨsαβ) (3)
Wherein, Ukprαβ=pIrαβ=kp(Irαβ *-Irαβ *)。
The ratio resonance control of 2 double-fed blower fan string complement systems
2.1 proportional integral resonance control principles
Propose based under α β two-phase rest frames ratio resonance control, the controller at resonant frequency gain compared with
Greatly, the gain very little and at disresonance frequence, therefore, system can realize zero steady-state error at resonant frequency, can be direct
Control of ac, realizes the control to subsynchronous component, and the transmission function of ratio resonant controller can be：
Wherein, kpIt is the proportional parts of ratio resonant controller, krIt is resonance coefficient, ω0It is resonant frequency, ωcIt is low pass
Cut-off frequency.krOnly influence the gain of resonant controller, ωcThe gain of ratio resonant controller is not only influenceed, ratio is had an effect on humorous
Shake the bandwidth of controller.Fig. 6 is the control principle schematic diagram of ratio resonant controller in one embodiment of the invention, wherein, u'rαβ
Controlled quentity controlled variable after expression ratio resonance.As shown in fig. 6, carrying out subsynchronous resonance to double-fed blower fan using the ratio resonant controller
Control, only comprising a subsynchronous resonance frequency, calculates easy.
In one embodiment, proportionality coefficient k is keptp=1.6, resonance coefficient kr=20 is constant, by low-pass cut-off frequencies ωc
Multiple different values are adjusted to, the closed loop Bode diagram of corresponding double-fed blower fan ratio resonant control system is obtained respectively.Fig. 7 and Tu
8 is respectively to keep the proportionality coefficient k of ratio resonant controller in one embodiment of the inventionpWith resonance coefficient krConstant situation
Lower regulation low-pass cut-off frequencies ωcThe double-fed blower fan string of acquisition mends the amplitude and phase of the closed loop Bode diagram of transmission of electricity resonant control system
Position.As shown in Figure 7 and Figure 8, proportionality coefficient k is keptp=1.6, resonance coefficient kr=20 is constant, obtains low-pass cut-off frequencies ωcPoint
Not Wei 5,10,15,20 when corresponding double-fed blower fan string mend the closed loop Bode diagram of transmission of electricity resonant control system.As proportionality coefficient kp
It is constant, resonance coefficient krIt is constant, low-pass cut-off frequencies ωcDuring change, system is constant in the gain of resonant frequency point, but can increase
Plus the gain near resonant frequency point, increase system bandwidth, in the case where deviation occurs in controlled AC compounent frequency, improve humorous
Control accuracy near vibration frequency point, but system Phase margin can be reduced.
In another embodiment, proportionality coefficient k is keptp=1.6, low-pass cut-off frequencies ωc=5 is constant, by resonance coefficient kr
Multiple different values are adjusted to, the closed loop Bode diagram of corresponding double-fed blower fan ratio resonant control system is obtained respectively.Fig. 9 and Tu
10 is respectively to keep the proportionality coefficient k of ratio resonant controller in one embodiment of the inventionpWith low-pass cut-off frequencies ωcIt is constant
In the case of adjust resonance coefficient krThe double-fed blower fan string of acquisition mend the closed loop Bode diagram of transmission of electricity resonant control system amplitude and
Phase.As shown in Figure 9 and Figure 10, proportionality coefficient k is keptp=1.6, low-pass cut-off frequencies ωc=5 is constant, obtains resonance coefficient kr
Double-fed blower fan string corresponding when respectively 5,10,15,20 mends the closed loop Bode diagram of transmission of electricity resonant control system.Such as Fig. 9 and Tu
Shown in 10, resonance coefficient krBigger, system is bigger in the gain of resonant frequency point, the current control energy of its respective resonant frequencies point
Power is stronger；With resonance coefficient krIncrease, Phase margin reduces therewith, and the stability of a system is deteriorated, therefore can be humorous by adjusting
Shake coefficient krWith low-pass cut-off frequencies ωcGain and the stability of system are met simultaneously, to obtain more preferable effect.
3 ratio resonance control simulation analysis
3.1 wind-powered electricity generation string complement system subsynchronous resonance recorder datas
Figure 11 and Figure 12 are respectively the failure wave-recording voltage of wind-powered electricity generation string complement system subsynchronous resonance in one embodiment of the invention
Data and current data.Figure 11 shows failure (a), the current recording data of (b) and (c) for emulating, Figure 12 show for
The voltage recorder data of the failure (a), (b) and (c) of emulation.
3.2 wind-powered electricity generation string complement system subsynchronous resonance simulation analysis
3.2.1 the simulation analysis for not taking ratio resonance to control
Emulating the equivalence mended using 2MVA blower fans string carries out transient state time-domain-simulation analysis, system equivalent and corresponding parameter and
Document " the double-fed blower fan subsynchronous resonance study mechanism based on rotor Rotative moment Analytics " (Proceedings of the CSEE, 2015,
35(19)：4861-4869) and " the subsynchronous specificity analysis of the full operation area of double-fed wind power generator compensated transmission system " (electricity
Network technology, 2014,38 (9)：The same in 2429-2433), double-fed blower fan work is in subsynchronous rotating speed 1200rpm, mechanical input work(
Rate 500kVA.Simulated current waveform and voltage that Figure 13 and Figure 14 are obtained when being and not taking braking measure in one embodiment of the invention
Waveform.Figure 13 shows that correspondence failure (a), (b) do not take the stator current ripple obtained during braking measure with the recorder data of (c)
Shape, Figure 14 shows that correspondence failure (a), (b) do not take the stator voltage ripple obtained during braking measure with the recorder data of (c)
Shape, from time domain waveform as can be seen that the subsynchronous current component containing 4Hz in electric current, electric current significantly resonance, and voltage resonance compared with
It is small, it is similar to failure wave-recording situation waveform, wind-powered electricity generation string is reappeared well and has mended subsynchronous resonance phenomenon.
Double-fed blower fan α shaft currents and β axles when Figure 15 and Figure 16 are respectively subsynchronous resonances in one embodiment of the invention is double
The reference current and feedback current of air-blower control inner ring are presented, from the point of view of the frequency of α β axles, reference current contains it with feedback current
The complement frequency component 46Hz of subsynchronous frequency, it is consistent with analysis.From the point of view of amplitude, reference current fuctuation within a narrow range, this is subsynchronous
Current component is that, because system synchronization causes its content relatively low, when showing to occur subsynchronous resonance, controller outer shroud is in ideal
Working condition, phaselocked loop etc. are also at linear work area, and phase error is small.Contain larger subsynchronous electric current in feedback current,
And rapid divergence state is presented, lack corresponding braking measure.Therefore resonant controller inner ring control strategy is improved can
Inhibition is provided.
Figure 17 is the spectrogram for carrying out fft analysis in one embodiment of the invention to the electric current under α β coordinates.As shown in figure 17,
Due to rotor rotation in itself, during subsynchronous electric current is converted into stationary rotor reference axis so that subsynchronous frequency is changed into power frequency
And the difference of rotor speed and subsynchronous frequency, under the conditions of 50Hz, rotating speed is 1200rpm, and subsynchronous resonance frequency is about
4Hz, then under rotor α β coordinates, subsynchronous electric current is converted to the component of 36Hz frequencies.
Simulation analysis when 3.2.2 taking ratio resonance to control
Figure 18 and Figure 19 are respectively the current simulations waveform and voltage emulation ripple obtained using the method for the embodiment of the present invention
Shape.As shown in Figure 18 and Figure 19, in the controls, additional proportion resonant controller, obtains correspondence failure (a), (b) and (c)
Stator current and voltage simulation waveform.Figure 20 and Figure 21 are reference currents under the α axles and β axles of one embodiment of the invention and anti-
Supply current.
Comparison diagram 13 and Figure 18, Figure 14 and Figure 19, Figure 15 and Figure 20, Figure 16 and Figure 21, from waveform, by control
Increase the resonance control of subsynchronous resonance Frequency point in device, blower fan can be made to strengthen the control to the Frequency point, it is secondary so as to avoid
Synchronous resonant, it is consistent with theory analysis, it can be seen that, the method for the embodiment of the present invention can actually well suppress subsynchronous humorous
Shake.
The hardware in loop checking of 4 wind-powered electricity generation string complement system subsynchronous resonances
In order to verify the correctness of ratio resonance control strategy presented here, using RT-LAB hardware in loop experiment porch
Verified.
4.1 do not take the simulation analysis that ratio resonance is controlled
The simulation waveform that obtains when not taking ratio resonance to control, waveform is followed successively by stator A phase voltages, stator A phase currents,
Stator B phase currents, stator C phase currents, voltage change ratio is 1000:1, electric current no-load voltage ratio is 1000:1, simulation step length 8e-5.By obtaining
Waveform is learnt, in the case where any measure is not taken, double-fed blower fan compensated transmission system generates subsynchronous resonance, wherein
Voltage amplitude is smaller, and current amplitude is larger, and resonance current is in divergent state, consistent with failure wave-recording and time-domain-simulation.
Learnt according to based on the stator current waveforms under α β axles, due to the rotation of armature spindle so that stator current transforms to α
β reference axis lower frequencies there occurs skew, consistent with theory.
4.2 take the emulation during control of ratio resonance
Controlled using ratio resonance as shown in Figure 6, carry out hardware in loop experiment, the simulation waveform for obtaining.Simulation waveform
Include stator A phase voltages, stator A phase currents, stator B phase currents, stator C phase currents, rotor A phase voltage, rotor A mutually electricity
Stream, rotor B phase currents, rotor C phase currents.The reference current and feedback current of rotor α β axles are also obtained, double-fed blower fan is obtained and is turned
Sub- output voltage and three-phase current.Learn in feedback current there is no subsynchronous resonance component.By introducing subsynchronous resonance frequency
The resonance control of point, can strengthen the control ability of resonance point, be prevented effectively from the subsynchronous humorous of double-fed blower fan-compensated transmission system
Shake, it is consistent with theoretical and time-domain-simulation.
The present embodiment, for the Sub-synchronous Resonance of North China somewhere wind-powered electricity generation compensated transmission system, using based on α β two
Ratio resonance control algolithm under phase rest frame, devises the relevant parameter of controller, by making controller in system string
Mend resonance point and resonance occurs, enhancing mends the control ability on electrical resonance point in string so that current transformer is under subsynchronous frequency
Existing positive resistance, can effectively suppress blower fan subsynchronous resonance.Tested by failure wave-recording, simulation analysis, hardware in loop, demonstrated
The method for being proposed can effectively suppress the subsynchronous resonance phenomenon in wind-powered electricity generation string complement system.
The suppressing method of embodiment of the present invention double-fed blower fan compensated transmission system subsynchronous resonance, relative under DQ coordinate systems
Resonance control, be to transform to α β coordinates, without regard to from ABC coordinates to DQ coordinate transforms, calculating can be simplified with this, and
And, the embodiment of the present invention only has a kind of frequency component, in the absence of two kinds of frequency components, it is not necessary to two resonance frequency controllers, with
This can omit a controller, therefore can simplify calculating, improve computational efficiency.The embodiment of the present invention is double from blower fan lateral inhibition
Subsynchronous resonance in feedback blower fan compensated transmission system, compared with power network lateral inhibition, the transformation of blower fan side has more flexibility, blower fan
The suppression of side, implements flexible, transformation convenience, low cost, short implementation cycle, can be entered in blower fan according to systems organization and design
The risk of subsynchronous resonance just can be fundamentally avoided during net with suppression function, the cost of suppression is minimum.
Based on the suppressing method identical invention structure with the double-fed blower fan compensated transmission system subsynchronous resonance shown in Fig. 1
Think, the embodiment of the present application additionally provides a kind of restraining device of double-fed blower fan compensated transmission system subsynchronous resonance, such as following reality
Apply described in example.Due to the principle and double-fed wind of the restraining device solve problem of the double-fed blower fan compensated transmission system subsynchronous resonance
The suppressing method of machine compensated transmission system subsynchronous resonance is similar, therefore the double-fed blower fan compensated transmission system subsynchronous resonance
The implementation of restraining device may refer to the implementation of the suppressing method of double-fed blower fan compensated transmission system subsynchronous resonance, repeat part
Repeat no more.
Figure 22 is the structure of the restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance of one embodiment of the invention
Schematic diagram.As shown in figure 22, the restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance of the embodiment of the present invention can be wrapped
Include：Stationary rotor coordinate system current component acquiring unit 210 and subsynchronous resonance suppress unit 220, the two interconnection.
Stationary rotor coordinate system current component acquiring unit 210 is used to perform：By double-fed blower fan compensated transmission system electric current
It is converted into the current component under stationary rotor α β coordinate systems.
Subsynchronous resonance suppresses unit 220 to be used to perform：Ratio resonance control is carried out to double-fed blower fan compensated transmission system,
The resonant frequency point that regulation ratio resonance is controlled is the subsynchronous frequency of the current component under stationary rotor α β coordinate systems, from blower fan
Subsynchronous resonance in double-fed blower fan compensated transmission system described in lateral inhibition.
Stationary rotor coordinate system current component acquiring unit 210 can be by double-fed blower fan compensated transmission system electric current by abc-
α β coordinate transforms, are transformed to the current component under rest frame.
Subsynchronous resonance suppresses unit 220 and is directed to existing double-fed blower fan PI control strategy limited bandwidths, in string mends transmission of electricity,
The problem that can not be controlled to subsynchronous resonance frequency component, such as can be improved to double-fed air-blower control strategy, to secondary same
Synchronizing frequency component carries out ratio resonance control, and the resonant frequency point that regulation ratio resonance is controlled is secondary under stationary rotor α β coordinates
Synchronizing frequency, the subsynchronous resonance from blower fan lateral inhibition double-fed blower fan compensated transmission system.Based under stationary rotor coordinate system
The control of proportional integral resonance, first, can pass through for Sub-synchronous Resonance present in double-fed blower fan compensated transmission system
The Mathematical Modeling of double-fed blower fan compensated transmission system is set up, its transmission function is derived；Then, by the analysis to transmission function
Propose.
Proposed based on α β components under stationary rotor coordinate system by double-fed blower fan compensated transmission system transfer function analysis
The control of ratio resonance, can realize under rest frame to the regulation of the floating of subsynchronous signal, be introduced into double-fed wind
Among current transformer electric current regulation in machine compensated transmission system, make the resonant frequency point that ratio resonance is controlled same with secondary by design
α β components under synchronizing frequency stationary rotor coordinate match, you can control of the enhancing double-fed blower fan to system subsynchronous resonance component
System, the suppression to subsynchronous resonance is realized from blower fan side.
The embodiment of the present invention, is to transform to α β coordinates, without regard to from ABC relative to the resonance control under DQ coordinate systems
Coordinate can simplify calculating to DQ coordinate transforms with this, and, the embodiment of the present invention only has a kind of frequency component, in the absence of two
Plant frequency component, it is not necessary to two resonance frequency controllers, a controller can be omitted with this, therefore calculating can be simplified, improve
Computational efficiency.The embodiment of the present invention is from the subsynchronous resonance in blower fan lateral inhibition double-fed blower fan compensated transmission system, with power network
Lateral inhibition is compared, and the transformation of blower fan side has more flexibility, and flexible, transformation convenience, low cost, implementation are implemented in the suppression of blower fan side
Cycle is short.
In some embodiments, the subsynchronous resonance suppresses unit 220 and is additionally operable to perform：
The transmission function that the ratio resonance is controlled is：
Wherein, GprThe transmission function of expression ratio resonant controller, kpThe proportionality coefficient of expression ratio resonant controller, kr
Represent resonance coefficient, ωcLow-pass cut-off frequencies are represented, s represents that the plural form of the transmission function of ratio resonant controller becomes certainly
Amount, ω0Represent resonant frequency.
Figure 23 is the knot of the restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance of another embodiment of the present invention
Structure schematic diagram.As shown in figure 23, the restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance shown in Figure 22, can also wrap
Include：Ratio resonance control parameter adjustment unit 230, suppresses unit 220 and is connected with subsynchronous resonance.
Ratio resonance control parameter adjustment unit 230 is used to perform：By keeping the ratio system of ratio resonant controller
Number kpWith resonance coefficient krLow-pass cut-off frequencies ω is adjusted in the case of constantcOr keeping the ratio of ratio resonant controller
Coefficient kpWith low-pass cut-off frequencies ωcResonance coefficient k is adjusted in the case of constantrObtain several double-fed blower fan strings and mend transmission of electricity resonance
The closed loop Bode diagram of control system, and the ratio of the double-fed blower fan compensated transmission system is determined according to the closed loop Bode diagram for obtaining
Resonance control parameter, to improve the double-fed blower fan compensated transmission system simultaneously in the gain of the resonant frequency point and described double
Present the stability of blower fan compensated transmission system.
The present embodiment, passing ratio resonance control parameter adjustment unit 230 can obtain more preferably ratio resonance control ginseng
Number, such as proportionality coefficient kp, resonance coefficient kr, low-pass cut-off frequencies ωc, can simultaneously meet double-fed blower fan compensated transmission system
Gain and the stability of double-fed blower fan compensated transmission system in resonant frequency point.
In some embodiments, the ratio resonance control parameter adjustment unit 230 is additionally operable to perform：Ratio resonant controller
Proportionality coefficient kp=1.6, resonance coefficient kr=5, low-pass cut-off frequencies ωc=10rad/s.
The restraining device of the double-fed blower fan compensated transmission system subsynchronous resonance of the embodiment of the present invention, relative to DQ coordinate systems
Under resonance control, be to transform to α β coordinates, without regard to from ABC coordinates to DQ coordinate transforms, calculating can be simplified with this, and
And, the embodiment of the present invention only has a kind of frequency component, in the absence of two kinds of frequency components, it is not necessary to two resonance frequency controllers, with
This can omit a controller, therefore can simplify calculating, improve computational efficiency.The embodiment of the present invention is double from blower fan lateral inhibition
Subsynchronous resonance in feedback blower fan compensated transmission system, compared with power network lateral inhibition, the transformation of blower fan side has more flexibility, blower fan
The suppression of side, implements flexible, transformation convenience, low cost, short implementation cycle, can be entered in blower fan according to systems organization and design
The risk of subsynchronous resonance just can be fundamentally avoided during net with suppression function, the cost of suppression is minimum.
In the description of this specification, reference term " one embodiment ", " specific embodiment ", " some implementations
The description of example ", " such as ", " example ", " specific example " or " some examples " etc. means to combine the embodiment or example description
Specific features, structure, material or feature are contained at least one embodiment of the invention or example.In this manual,
Schematic representation to above-mentioned term is not necessarily referring to identical embodiment or example.And, the specific features of description, knot
Structure, material or feature can in an appropriate manner be combined in one or more any embodiments or example.Each embodiment
In the step of be related to order be used to schematically illustrate implementation of the invention, sequence of steps therein is not construed as limiting, can be as needed
Appropriately adjust.
It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program
Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware
Apply the form of example.And, the present invention can be used and wherein include the computer of computer usable program code at one or more
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) is produced
The form of product.
The present invention is the flow with reference to method according to embodiments of the present invention, equipment (system) and computer program product
Figure and/or block diagram are described.It should be understood that every first-class during flow chart and/or block diagram can be realized by computer program instructions
The combination of flow and/or square frame in journey and/or square frame and flow chart and/or block diagram.These computer programs can be provided
The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce
A raw machine so that produced for reality by the instruction of computer or the computing device of other programmable data processing devices
The device of the function of being specified in present one flow of flow chart or multiple one square frame of flow and/or block diagram or multiple square frames.
These computer program instructions may be alternatively stored in can guide computer or other programmable data processing devices with spy
In determining the computer-readable memory that mode works so that instruction of the storage in the computer-readable memory is produced and include finger
Make the manufacture of device, the command device realize in one flow of flow chart or multiple one square frame of flow and/or block diagram or
The function of being specified in multiple square frames.
These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter
Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented treatment, so as in computer or
The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one
The step of function of being specified in individual square frame or multiple square frames.
Particular embodiments described above, has been carried out further in detail to the purpose of the present invention, technical scheme and beneficial effect
Describe in detail bright, should be understood that and the foregoing is only specific embodiment of the invention, the guarantor being not intended to limit the present invention
Shield scope, all any modification, equivalent substitution and improvements within the spirit and principles in the present invention, done etc., should be included in this
Within the protection domain of invention.
Claims (8)
1. a kind of suppressing method of double-fed blower fan compensated transmission system subsynchronous resonance, it is characterised in that including：
Double-fed blower fan compensated transmission system electric current is converted into the current component under stationary rotor α β coordinate systems；
Ratio resonance control is carried out to double-fed blower fan compensated transmission system, the resonant frequency point that regulation ratio resonance is controlled is rotor
The subsynchronous frequency of the current component under static α β coordinate systems, from double-fed blower fan compensated transmission system described in blower fan lateral inhibition
Subsynchronous resonance.
2. the suppressing method of double-fed blower fan compensated transmission system subsynchronous resonance as claimed in claim 1, it is characterised in that
The transmission function that the ratio resonance is controlled is：
Wherein, GprThe transmission function of expression ratio resonant controller, kpThe proportionality coefficient of expression ratio resonant controller, krRepresent
Resonance coefficient, ωcLow-pass cut-off frequencies are represented, s represents the plural form independent variable of the transmission function of ratio resonant controller, ω0
Represent resonant frequency.
3. the suppressing method of double-fed blower fan compensated transmission system subsynchronous resonance as claimed in claim 2, it is characterised in that also
Including：
By keeping the proportionality coefficient k of ratio resonant controllerpWith resonance coefficient krLow pass cutoff is adjusted in the case of constant frequently
Rate ωcOr keeping the proportionality coefficient k of ratio resonant controllerpWith low-pass cut-off frequencies ωcResonance is adjusted in the case of constant
Coefficient krThe closed loop Bode diagram that several double-fed blower fan strings mend transmission of electricity resonant control system is obtained, and according to the closed loop Bode diagram for obtaining
Determine the ratio resonance control parameter of the double-fed blower fan compensated transmission system, transmission of electricity is mended to improve the double-fed blower fan string simultaneously
System is in the gain of the resonant frequency point and the stability of the double-fed blower fan compensated transmission system.
4. the suppressing method of double-fed blower fan compensated transmission system subsynchronous resonance as claimed in claim 3, it is characterised in that ratio
The proportionality coefficient k of example resonant controllerp=1.6, resonance coefficient kr=5, low-pass cut-off frequencies ωc=10rad/s.
5. a kind of restraining device of double-fed blower fan compensated transmission system subsynchronous resonance, it is characterised in that including：
Stationary rotor coordinate system current component acquiring unit, for performing：Double-fed blower fan compensated transmission system electric current is converted into
Current component under stationary rotor α β coordinate systems；
Subsynchronous resonance suppresses unit, for performing：Ratio resonance control, regulation ratio are carried out to double-fed blower fan compensated transmission system
The resonant frequency point that example resonance is controlled is the subsynchronous frequency of the current component under stationary rotor α β coordinate systems, from blower fan lateral inhibition
Subsynchronous resonance in the double-fed blower fan compensated transmission system.
6. the restraining device of double-fed blower fan compensated transmission system subsynchronous resonance as claimed in claim 5, it is characterised in that institute
State subsynchronous resonance and suppress unit, be additionally operable to perform：
The transmission function that the ratio resonance is controlled is：
Wherein, GprThe transmission function of expression ratio resonant controller, kpThe proportionality coefficient of expression ratio resonant controller, krRepresent
Resonance coefficient, ωcLow-pass cut-off frequencies are represented, s represents the plural form independent variable of the transmission function of ratio resonant controller, ω0
Represent resonant frequency.
7. the restraining device of double-fed blower fan compensated transmission system subsynchronous resonance as claimed in claim 6, it is characterised in that also
Including：
Ratio resonance control parameter adjustment unit, for performing：By keeping the proportionality coefficient k of ratio resonant controllerpIt is harmonious
Shake coefficient krLow-pass cut-off frequencies ω is adjusted in the case of constantcOr keeping the proportionality coefficient k of ratio resonant controllerpWith
Low-pass cut-off frequencies ωcResonance coefficient k is adjusted in the case of constantrObtain several double-fed blower fan strings and mend transmission of electricity resonant control system
Closed loop Bode diagram, and according to obtain closed loop Bode diagram determine the double-fed blower fan compensated transmission system ratio resonance control
Parameter, to improve gain and the double-fed blower fan string of the double-fed blower fan compensated transmission system in the resonant frequency point simultaneously
Mend the stability of transmission system.
8. the restraining device of double-fed blower fan compensated transmission system subsynchronous resonance as claimed in claim 7, it is characterised in that institute
Ratio resonance control parameter adjustment unit is stated, is additionally operable to perform：The proportionality coefficient k of ratio resonant controllerp=1.6, resonance system
Number kr=5, low-pass cut-off frequencies ωc=10rad/s.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988387A (en) * | 2018-07-30 | 2018-12-11 | 国网湖南省电力有限公司电力科学研究院 | Based on the average double-fed fan motor unit subsynchronous resonance suppressing method of rotor current phase shift |
| CN109214678A (en) * | 2018-08-30 | 2019-01-15 | 中国南方电网有限责任公司 | Flexible direct current converter station harmonic resonance methods of risk assessment, device and storage medium |
| CN110086172A (en) * | 2019-05-08 | 2019-08-02 | 合肥工业大学 | Unit m-Acetyl chlorophosphonazo interactive analysis method in straight wind dispelling field based on α β coordinate system |
| CN111313434A (en) * | 2020-02-04 | 2020-06-19 | 哈尔滨理工大学 | Self-adaptive resonance coefficient control method, subsynchronous suppression method and device and converter controller |
| CN112186759A (en) * | 2020-09-28 | 2021-01-05 | 西安热工研究院有限公司 | Doubly-fed wind power plant subsynchronous oscillation suppression method for adaptively capturing frequency points |
| CN112834018A (en) * | 2020-12-18 | 2021-05-25 | 哈尔滨工大正元信息技术有限公司 | Detection method of working state of navigation aid lamp, storage medium and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141110A (en) * | 2007-09-07 | 2008-03-12 | 浙江大学 | Variable speed constant frequency dual-feed asynchronous wind power generator rotor current non-delay control method |
| CN101615791A (en) * | 2009-07-29 | 2009-12-30 | 清华大学 | The hyposynchronous damped control system that effectively suppresses subsynchronous resonance and vibration |
| CN102570950A (en) * | 2012-01-18 | 2012-07-11 | 四方蒙华电（北京）自动化技术有限公司 | Subsynchronous damping control system and subsynchronous damping control method for generator terminals |
| CN104852661A (en) * | 2015-04-29 | 2015-08-19 | 同济大学 | Permanent-magnet synchronous motor torque ripple suppression method based on coordinate transformation harmonic compensation |
-
2017
- 2017-02-07 CN CN201710066784.1A patent/CN106786673B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141110A (en) * | 2007-09-07 | 2008-03-12 | 浙江大学 | Variable speed constant frequency dual-feed asynchronous wind power generator rotor current non-delay control method |
| CN101615791A (en) * | 2009-07-29 | 2009-12-30 | 清华大学 | The hyposynchronous damped control system that effectively suppresses subsynchronous resonance and vibration |
| CN102570950A (en) * | 2012-01-18 | 2012-07-11 | 四方蒙华电（北京）自动化技术有限公司 | Subsynchronous damping control system and subsynchronous damping control method for generator terminals |
| CN104852661A (en) * | 2015-04-29 | 2015-08-19 | 同济大学 | Permanent-magnet synchronous motor torque ripple suppression method based on coordinate transformation harmonic compensation |
Non-Patent Citations (1)
| Title |
|---|
| 胡应宏等: "双馈风机-串补输电系统次同步谐振的附加阻尼控制", 《电网技术》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988387A (en) * | 2018-07-30 | 2018-12-11 | 国网湖南省电力有限公司电力科学研究院 | Based on the average double-fed fan motor unit subsynchronous resonance suppressing method of rotor current phase shift |
| CN109214678A (en) * | 2018-08-30 | 2019-01-15 | 中国南方电网有限责任公司 | Flexible direct current converter station harmonic resonance methods of risk assessment, device and storage medium |
| CN109214678B (en) * | 2018-08-30 | 2020-09-01 | 中国南方电网有限责任公司 | Flexible direct current converter station harmonic resonance risk assessment method and device and storage medium |
| CN110086172A (en) * | 2019-05-08 | 2019-08-02 | 合肥工业大学 | Unit m-Acetyl chlorophosphonazo interactive analysis method in straight wind dispelling field based on α β coordinate system |
| CN110086172B (en) * | 2019-05-08 | 2020-09-04 | 合肥工业大学 | Method for analyzing inter-unit harmonic interaction in direct-drive wind field based on alpha beta coordinate system |
| CN111313434A (en) * | 2020-02-04 | 2020-06-19 | 哈尔滨理工大学 | Self-adaptive resonance coefficient control method, subsynchronous suppression method and device and converter controller |
| CN111313434B (en) * | 2020-02-04 | 2023-02-28 | 哈尔滨理工大学 | Resonance coefficient control method, subsynchronous suppression device and controller |
| CN112186759A (en) * | 2020-09-28 | 2021-01-05 | 西安热工研究院有限公司 | Doubly-fed wind power plant subsynchronous oscillation suppression method for adaptively capturing frequency points |
| CN112186759B (en) * | 2020-09-28 | 2022-11-15 | 西安热工研究院有限公司 | Doubly-fed wind power plant subsynchronous oscillation suppression method for adaptively capturing frequency points |
| CN112834018A (en) * | 2020-12-18 | 2021-05-25 | 哈尔滨工大正元信息技术有限公司 | Detection method of working state of navigation aid lamp, storage medium and electronic equipment |
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