CN108321841A - The double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping - Google Patents
The double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping Download PDFInfo
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Classifications
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- H02J3/386—
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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
- H02J3/002—Flicker reduction, e.g. compensation of flicker introduced by non-linear load
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
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Abstract
The invention discloses a kind of double-fed fan motor unit sub-synchronous oscillation suppression methods of wideband rotor additional damping, are implemented in the current transformer control of double-fed fan rotor side, the sub-synchronous oscillation for inhibiting Double-feed wind power unit；The application detects double-fed fan rotor three-phase current, by detecting rotor current, after Park is converted into DQ shaftings, using the subsynchronous band component of filter filtering extract real-time rotor current, then through phase compensation, after the processing of ratio enlargement controlling unit, it is superimposed on original sub- voltage control instructions of current transformer DQ shaft rotations, change fan rotor side current transformer control strategy is passed through to the inhibition of sub-synchronous oscillation, increase wide band additional longitudinal forces in rotor-side to enhance the damping characteristic of the subsynchronous frequency band of Wind turbines, enhance the damping of unit piece electrical, to suppression system sub-synchronous oscillation, the application is without attachment device, conducive to Project Realization.
Description
Technical field
The present invention relates to power system and automation technology more particularly to a kind of wideband rotor additional longitudinal forces
Inhibit the method for double-fed wind turbine sub-synchronous oscillation.
Background technology
THE WIND ENERGY RESOURCES IN CHINA is in contrary distribution with load, as power electronic equipment and regenerative resource networking ratio increase
Add, the distinctive multiple dimensioned controlling mechanism of electric electronic current change technology and low inertia broadband response characteristic significantly change power train
System behavioral characteristics.Low-frequency oscillation and sub-synchronous oscillation problem become increasingly conspicuous in the power grid of new-energy grid-connected, in recent years, multiplely
There is the regional power grid sub-synchronous oscillation phenomenon of Wind turbines participation in area, leads to large area Wind turbines off-grid, or even induces adjacent
The nearly subsynchronous protective device action of fired power generating unit, causes fired power generating unit to cut machine.
String is focused primarily upon about the research of sub-synchronous oscillation mend shaking of being generated between direct current and traditional fired power generating unit at present
Swing phenomenon.Wind-powered electricity generation participates in the research of sub-synchronous oscillation still in the starting stage, and existing research is concentrated mainly at present is filled based on FACTS
Inhibition sub-synchronous oscillation is set, FACTS devices are usually installed near wind power plant by this meeting measure, not only increase extra cost, and
Engineering parameter debugging is difficult.Also there is research from the control of wind turbine side, with reference to the experience of fired power generating unit, propose to increase inclined with rotating speed
Difference signal is the damping control of feedback, however the rotating speed separate-blas estimation precision of wind turbine is relatively low at present, it is difficult to meet control accuracy, shadow
Control effect is rung, this control method is based on sub-synchronous oscillation frequency it is known that being not suitable with wind power plant sub-synchronous oscillation frequency in addition
The case where rate changes.
Such as：A kind of suppressing methods of double-fed wind power generator group sub-synchronous oscillation of CN201310308327-, this application skill
Art is using the rotating speed deviation delta ω r of generator as control input signal, however, in actual wind power system, rotor speed is inclined
Shifting amount Δ ω r can not be directly acquired, and there are larger detection error, be caused to inhibiting the subsynchronous of double-fed fan motor unit
Oscillation brings inconvenience.
A kind of method and system inhibiting double-fed fan motor unit sub-synchronous oscillation of CN201410466757-, this application technology
For specific subsynchronous frequency, need in advance the frequency band according to sub-synchronous oscillation come setting parameter, and at present wind-powered electricity generation participate in time
Synchronized oscillation presents the characteristics of frequency of oscillation drift variation, is difficult to predict frequency of oscillation under complex electric network.
Invention content
In view of the drawbacks described above of the prior art, it is additional that technical problem to be solved by the invention is to provide a kind of wideband rotors
The double-fed fan motor unit sub-synchronous oscillation suppression method of damping enhances the subsynchronous band damping of Double-feed wind power unit, reduces double
The subsynchronous frequency band oscillation risks of feedback type wind power plant can not inhibit the technology of sub-synchronous oscillation to ask to partly solve the prior art
Topic.
To achieve the above object, it shakes the present invention provides a kind of double-fed fan motor unit of wideband rotor additional damping is subsynchronous
Suppressing method is swung, can be implemented in the current transformer control of double-fed fan rotor side, be used under the premise of not increasing hardware device
The sub-synchronous oscillation for inhibiting Double-feed wind power unit to participate in.
Technical solution of the present invention is：
A kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping, is implemented on double-fed wind turbine
In rotor-side converter control, the sub-synchronous oscillation for inhibiting Double-feed wind power unit to participate in；
Specifically include following steps：
1) double-fed fan rotor three-phase current i is detectedr_a、ir_bAnd ir_c；
2) by rotor three-phase electric current ir_a、ir_bAnd ir_cIt is converted into DQ shafting components i through ParkrdAnd irq。
3) D filter axis is based on to rotor current D axis components irdIt is filtered, it is subsynchronous for extracting rotor current D axis
Band component ird’；Based on Q filter axis to rotor current Q axis components irqIt is filtered, it is same for extracting rotor current Q axis time
Walk band component irq’；
4) the subsynchronous band component i of rotor current D axisrd' it is multiplied by KRCoefficient carries out ratio enlargement, obtains virtual attached of D axis
Rotor is added to damp, the virtual additional rotor damping of D axis and the original rotor voltage D axis control instruction u of current transformer DQ shaftingsrdPhase
Add, obtains final rotor voltage D axis control instructions urd’；The subsynchronous band component i of rotor current Q axisrq' it is multiplied by KRCoefficient into
Row ratio enlargement, obtains the virtual additional rotor damping of Q axis, and the virtual additional rotor damping of Q axis is original with current transformer DQ shaftings
Rotor voltage Q axis control instructions urqIt is added, obtains final rotor voltage Q axis control instructions urq', final rotor voltage D axis
Control instruction urd' and final rotor voltage Q axis control instructions urq' after Park-Clark is converted into three-phase static coordinate system
Carry out pwm pulse modulation control.
More preferably, DQ shaftings described in step 2) is two-phase rotating coordinate system, and two phase coordinate system angular velocity of rotations are stator
The difference of voltage synchronous angular speed and rotor velocity, rotor watt current are directed to Q axis, and rotor reactive current is directed to D axis.
More preferably, the filtering of D filter axis specifically includes following steps in step 3)：
Based on low-pass filter from rotor current D axis components irdIn extract DC component, using high-pass filter from turn
Electron current D axis components irdIn extract high fdrequency component, rotor current D axis components irdSubtract the DC component extracted and high frequency
Component obtains the subsynchronous band component i of filtered rotor current D axisrd’；
More preferably, the filtering of Q filter axis specifically includes following steps in step 3)：
Low-pass filter is primarily based on from rotor current Q axis components irqIn extract DC component, then use high pass filter
Wave device is from rotor current Q axis components irqIn extract high fdrequency component, rotor current Q axis components irqSubtract the direct current point extracted
Amount and high fdrequency component, obtain the subsynchronous band component i of Q axis of filtered rotor currentrq’。
More preferably, the original rotor voltage control instruction u of current transformer DQ shaftings in step 4)rdIt is original by rotor-side converter
Rotor current inner ring controlling unit generate, be rotor current D axis component control instructions ird *(rotor-side converter power outer shroud D
Axis exports) and rotor current D axis components irdDeviation subtract Q shaft current coupling amounts after proportional integration PI and obtain.
More preferably, the original rotor voltage control instruction u of current transformer DQ shaftings in step 4)rqIt is original by rotor-side converter
Rotor current inner ring controlling unit generate, for rotor Q shaft currents instruct ird *(output of rotor-side converter power outer shroud Q axis)
With rotor current Q axis components irqDeviation obtained plus D shaft current coupling amounts after proportional integration PI.
Compared with prior art, the present invention haing the following advantages：
The present invention discloses a kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping, to secondary same
The inhibition of oscillation is walked by changing fan rotor side current transformer control strategy, increases wide band additional longitudinal forces in rotor-side
To enhance the damping characteristic of the subsynchronous frequency band of Wind turbines, without increasing new electrical detection signal, nothing for sub-synchronous oscillation
Extra cost need to be increased.
The present invention, as input, need not detect rotor speed using the existing detection limit rotor current of double-fed fan motor unit
Offset Δ ω r, detection error is small, the accurate sub-synchronous oscillation for inhibiting double-fed fan motor unit.
The present invention is based on broadband rotor additional longitudinal forces technologies, and the sub-synchronous oscillation frequency range of adaptation is wider, and
Have evaluated influence of the additional control to wind turbine stable state, transient state operation.
The filter used in a kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping of the present invention
Wave device (D filter axis and Q filter axis) design simplifies phase compensation computational problem, has broadband properties, is suitable for vibrating
The case where frequency changes with fan condition is easy to Project Realization.
Description of the drawings
Present invention will be further explained below with reference to the attached drawings and examples；
Fig. 1 is that the double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping of the present invention realizes block diagram；
Fig. 2 is that the filter proposed by the present invention for extracting the subsynchronous electric current of rotor is imitated with conventional belt with filter filtering
Fruit comparison diagram；
Fig. 3 is that double-fed wind turbine puts into wind-powered electricity generation field oscillation disappearance curve after oscillation suppression method of the present invention；
Fig. 4 is influence of the sub-synchronous oscillation suppression method of the present invention to wind turbine steady state power step response；
Fig. 5 is that sub-synchronous oscillation suppression method of the present invention is sending out shadow of the circuit without the string added time to wind turbine transient current
It rings；
Fig. 6 is for sub-synchronous oscillation suppression method of the present invention when sending out circuit series compensation degrees 0.5 to wind turbine transient current
Influence.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings and by specific embodiment, and following embodiment is descriptive
, it is not restrictive, protection scope of the present invention cannot be limited with this.
In order to make technological means, creation characteristic, workflow, application method reached purpose and effect of the present invention, and it is
The evaluation method is set to be easy to understand with reference to specific embodiments the present invention is further explained.
It, can be the present invention provides a kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping
It is implemented under the premise of not increasing hardware device in the current transformer control of double-fed fan rotor side, for inhibiting Double-feed wind power machine
The sub-synchronous oscillation that group participates in.
Present invention is further described in detail with reference to the accompanying drawings and in conjunction with example.
As shown in Figure 1, a kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping, is implemented on
In the current transformer control of double-fed fan rotor side, the sub-synchronous oscillation for inhibiting Double-feed wind power unit to participate in；
Specifically include following steps：
1) double-fed fan rotor three-phase current i is detectedr_a、ir_bAnd ir_c。
2) by rotor three-phase electric current ir_a、ir_bAnd ir_cIt is converted into DQ shafting components i through ParkrdAnd irq.DQ shaftings are two
Cordic phase rotator system, two phase coordinate system angular velocity of rotations are the difference of stator voltage synchronous angular velocity and rotor velocity, and rotor has
Work(current oriention to Q axis, rotor reactive current is directed to D axis.
3) D filter axis is based on to rotor current D axis components irdIt is filtered, it is subsynchronous for extracting rotor current D axis
Band component ird’；Based on Q filter axis to rotor current Q axis components irqIt is filtered, it is same for extracting rotor current Q axis time
Walk band component irq’；
The filtering of D filter axis specifically includes following steps：
Based on low-pass filter from rotor current D axis components irdIn extract DC component, using high-pass filter from turn
Electron current D axis components irdIn extract high fdrequency component, rotor current D axis components irdSubtract the DC component extracted and high frequency
Component obtains the subsynchronous band component i of filtered rotor current D axisrd’；
The filtering of Q filter axis specifically includes following steps：
Low-pass filter is primarily based on from rotor current Q axis components irqIn extract DC component, then use high pass filter
Wave device is from rotor current Q axis components irqIn extract high fdrequency component, rotor current Q axis components irqSubtract the direct current point extracted
Amount and high fdrequency component, obtain the subsynchronous band component i of Q axis of filtered rotor currentrq’。
4) the subsynchronous band component i of rotor current D axisrd' it is multiplied by KRCoefficient carries out ratio enlargement, obtains virtual attached of D axis
Rotor is added to damp, the virtual additional rotor damping of D axis and the original rotor voltage D axis control instruction u of current transformer DQ shaftingsrdPhase
Add, obtains final rotor voltage D axis control instructions urd’；The subsynchronous band component i of rotor current Q axisrq' it is multiplied by KRCoefficient into
Row ratio enlargement, obtains the virtual additional rotor damping of Q axis, and the virtual additional rotor damping of Q axis is original with current transformer DQ shaftings
Rotor voltage Q axis control instructions urqIt is added, obtains final rotor voltage Q axis control instructions urq', final rotor voltage D axis
Control instruction urd' and final rotor voltage Q axis control instructions urq' after Park-Clark is converted into three-phase static coordinate system
Carry out pwm pulse modulation control.
The original rotor voltage control instruction u of current transformer DQ shaftings in step 4)rdBy the original rotor of rotor-side converter
Current inner loop control link generates, and is rotor current D axis component control instructions ird *(rotor-side converter power outer shroud D axis is defeated
Go out) and rotor current D axis components irdDeviation subtract Q shaft current coupling amounts after proportional integration PI links and obtain.
The original rotor voltage control instruction u of current transformer DQ shaftings in step 4)rqBy the original rotor of rotor-side converter
Current inner loop control link generates, and i is instructed for rotor Q shaft currentsrd *(output of rotor-side converter power outer shroud Q axis) and rotor
Electric current Q axis components irqDeviation obtained plus D shaft current coupling amounts after proportional integration PI links.
The present embodiment proposes a kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping.This reality
The control for applying example is implemented in the current transformer rotor side controller of Double-feed wind power unit, implements control block diagram as shown in Figure 1, control
Device processed detects rotor current, and after Park is converted into DQ shaftings, the subsynchronous frequency of extract real-time rotor current is designed using filter
Band component is superimposed on original current transformer DQ axis rotor voltages then after phase compensation and the processing of ratio enlargement controlling unit
In control instruction, enhancing unit piece electrical damping, to suppression system sub-synchronous oscillation.The suppressing method need not additional dress
It sets, is conducive to Project Realization.
Fig. 2 is that the filter proposed by the present invention for extracting the subsynchronous electric current of rotor is imitated with conventional belt with filter filtering
Fruit comparison diagram；Filter extracts DC component using low-pass filter from rotor current DQ axis components first, then uses
High-pass filter extracts high fdrequency component from rotor current DQ axis components, and last rotor current DQ axis components, which subtract, to be extracted
DC component and high fdrequency component, obtain filtered rotor current DQ axis components, which simplifies phase benefit
Computational problem is repaid, there are broadband properties, be suitable for the case where frequency of oscillation changes with fan condition, be easy to Project Realization.
By taking access capacity is the Double-feed wind power field of 75MW as an example, it is made of the wind turbine of 50 1.5MW rated power.Such as figure
Shown in 3, when wind power plant submitting circuit series compensation degrees are 0.5, under the operating condition of motor speed 0.9p.u., 10.8Hz occurs for system
Subsynchronous oscillation of power, put into rotor additional damping braking measure proposed in this paper when running 4.6s, find subsynchronous shakes
Phenomenon disappearance is swung, the voltage and current of system tends towards stability, and active output is also gradually stablized, and system restores stability.
Whether the sub-synchronous oscillation suppression method to investigate proposed by the invention impacts wind turbine Steady,
Simulates blower fan steady state power cataclysm, as shown in figure 4, simulation comparison shows that sub-synchronous oscillation suppression method of the present invention can make
Blower fan system step response overshoot slightly increases.
Whether the sub-synchronous oscillation suppression method to investigate proposed by the invention impacts wind turbine transient state operation characteristic,
Simulates blower fan 220kV sends out circuit three phase short circuit fault, and as shown in Figure 5 when wind power plant outlet line is without the string added time, system is secondary
Synchronizing band resonance free point, simulation comparison show sub-synchronous oscillation suppression method of the present invention to wind turbine transient current almost without
It influences, as shown in fig. 6, when wind power plant outlet line series compensation degrees 0.5, there are resonance point, emulation pair in subsynchronous frequency band for system
Restore stable speed than showing that sub-synchronous oscillation suppression method of the present invention can accelerate current temporary state response.
Those skilled in the art can be modified to the present invention or the think of of modification designed but do not depart from the present invention
Think and range.Therefore, if these modifications and changes of the present invention belongs to the claims in the present invention and its equivalent technical scope
Within, then the present invention is also intended to include these modifications and variations.
Claims (6)
1. a kind of double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping, it is characterised in that：
It is implemented in the current transformer control of double-fed fan rotor side, the sub-synchronous oscillation for inhibiting Double-feed wind power unit；
Specifically include following steps：
1) double-fed fan rotor three-phase current i is detectedr_a、ir_bAnd ir_c；
2) by rotor three-phase electric current ir_a、ir_bAnd ir_cIt is converted into DQ shafting components i through ParkrdAnd irq；
3) D filter axis is based on to rotor current D axis components irdIt is filtered, for extracting the subsynchronous frequency band of rotor current D axis
Component ird’；Based on Q filter axis to rotor current Q axis components irqIt is filtered, for extracting the subsynchronous frequency of rotor current Q axis
Band component irq’；
4) the subsynchronous band component i of rotor current D axisrd' it is multiplied by KRCoefficient carries out ratio enlargement, obtains virtual the adding of D axis and turns
Son damping, the virtual additional rotor damping of D axis and the original rotor voltage D axis control instruction u of current transformer DQ shaftingsrdIt is added, obtains
To final rotor voltage D axis control instructions urd’；The subsynchronous band component i of rotor current Q axisrq' it is multiplied by KRCoefficient carries out ratio
Amplification obtains the virtual additional rotor damping of Q axis, the virtual additional rotor damping of Q axis and the original rotor of current transformer DQ shaftings
Voltage Q axis control instructions urqIt is added, obtains final rotor voltage Q axis control instructions urq', final rotor voltage D axis control refers to
Enable urd' and final rotor voltage Q axis control instructions urq' PWM is carried out after Park-Clark is converted into three-phase static coordinate system
Impulse modulation controls.
2. a kind of double-fed fan motor unit sub-synchronous oscillation inhibition side of wideband rotor additional damping according to claim 1
Method, which is characterized in that
DQ shaftings described in the step 2) are two-phase rotating coordinate system, and two phase coordinate system angular velocity of rotations synchronize for stator voltage
The difference of angular speed and rotor velocity, rotor watt current are directed to Q axis, and rotor reactive current is directed to D axis.
3. a kind of double-fed fan motor unit sub-synchronous oscillation inhibition side of wideband rotor additional damping according to claim 1
Method, which is characterized in that
The filtering of D filter axis specifically includes following steps in step 3)：
Based on low-pass filter from rotor current D axis components irdIn extract DC component, using high-pass filter from rotor electricity
Flow D axis components irdIn extract high fdrequency component, rotor current D axis components irdThe DC component and high fdrequency component extracted is subtracted,
Obtain the subsynchronous band component i of filtered rotor current D axisrd’。
4. a kind of double-fed fan motor unit sub-synchronous oscillation inhibition side of wideband rotor additional damping according to claim 1
Method, which is characterized in that
The filtering of Q filter axis specifically includes following steps in step 3)：
Low-pass filter is primarily based on from rotor current Q axis components irqIn extract DC component, then use high-pass filter
From rotor current Q axis components irqIn extract high fdrequency component, rotor current Q axis components irqSubtract the DC component that extracts and
High fdrequency component obtains the subsynchronous band component i of Q axis of filtered rotor currentrq’。
5. a kind of double-fed fan motor unit sub-synchronous oscillation inhibition side of wideband rotor additional damping according to claim 1
Method, which is characterized in that
The original rotor voltage control instruction u of current transformer DQ shaftings in step 4)rdBy the original rotor current of rotor-side converter
Inner ring controlling unit generates, and is rotor current D axis component control instructions ird *With rotor current D axis components irdDeviation through ratio
Q shaft current coupling amounts are subtracted after integral PI link to obtain.
6. a kind of double-fed fan motor unit sub-synchronous oscillation inhibition side of wideband rotor additional damping according to claim 1
Method, which is characterized in that the original rotor voltage control instruction u of current transformer DQ shaftings in step 4)rqIt is original by rotor-side converter
Rotor current inner ring controlling unit generate, for rotor Q shaft currents instruct ird *With rotor current Q axis components irqDeviation through than
It is obtained plus D shaft current coupling amounts after example integral PI link.
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| CN201810161110.4A CN108321841A (en) | 2018-02-26 | 2018-02-26 | The double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping |
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| CN201810161110.4A CN108321841A (en) | 2018-02-26 | 2018-02-26 | The double-fed fan motor unit sub-synchronous oscillation suppression method of wideband rotor additional damping |
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| CN111245013A (en) * | 2020-02-27 | 2020-06-05 | 华北电力大学 | DFIG subsynchronous oscillation suppression method based on multi-branch impedance remodeling |
| CN111817314A (en) * | 2020-07-16 | 2020-10-23 | 阳光电源股份有限公司 | Subsynchronous oscillation suppression method and related device for doubly-fed unit grid-connected system |
| CN112803734A (en) * | 2020-12-30 | 2021-05-14 | 深圳市禾望电气股份有限公司 | Method for inhibiting subsynchronous resonance of double-fed wind generating set and converter |
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| CN109193705A (en) * | 2018-11-15 | 2019-01-11 | 华北电力科学研究院有限责任公司 | Double-fed fan motor unit subsynchronous resonance suppressing method and device |
| CN109193705B (en) * | 2018-11-15 | 2021-05-25 | 华北电力科学研究院有限责任公司 | Method and device for inhibiting subsynchronous resonance of doubly-fed wind turbine generator |
| CN110932319A (en) * | 2019-12-06 | 2020-03-27 | 华北电力科学研究院有限责任公司 | Method and system for inhibiting subsynchronous oscillation of doubly-fed wind turbine generator |
| CN110932319B (en) * | 2019-12-06 | 2021-11-26 | 华北电力科学研究院有限责任公司 | Method and system for inhibiting subsynchronous oscillation of doubly-fed wind turbine generator |
| CN111245013A (en) * | 2020-02-27 | 2020-06-05 | 华北电力大学 | DFIG subsynchronous oscillation suppression method based on multi-branch impedance remodeling |
| CN111245013B (en) * | 2020-02-27 | 2022-05-13 | 华北电力大学 | DFIG subsynchronous oscillation suppression method based on multi-branch impedance remodeling |
| CN111817314A (en) * | 2020-07-16 | 2020-10-23 | 阳光电源股份有限公司 | Subsynchronous oscillation suppression method and related device for doubly-fed unit grid-connected system |
| CN111817314B (en) * | 2020-07-16 | 2022-05-24 | 阳光电源股份有限公司 | Subsynchronous oscillation suppression method and related device for doubly-fed unit grid-connected system |
| CN112803734A (en) * | 2020-12-30 | 2021-05-14 | 深圳市禾望电气股份有限公司 | Method for inhibiting subsynchronous resonance of double-fed wind generating set and converter |
| CN112803734B (en) * | 2020-12-30 | 2022-05-13 | 深圳市禾望电气股份有限公司 | Method for inhibiting subsynchronous resonance of double-fed wind generating set and converter |
| CN112838589A (en) * | 2021-03-25 | 2021-05-25 | 哈尔滨工业大学 | Subsynchronous oscillation suppression method for voltage source type doubly-fed wind turbine generator under series compensation power grid |
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