CN106026122B - A kind of method that asynchronous excitation integrates phase modifier and its reactive-load compensation and active balance - Google Patents
A kind of method that asynchronous excitation integrates phase modifier and its reactive-load compensation and active balance Download PDFInfo
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- CN106026122B CN106026122B CN201610474932.9A CN201610474932A CN106026122B CN 106026122 B CN106026122 B CN 106026122B CN 201610474932 A CN201610474932 A CN 201610474932A CN 106026122 B CN106026122 B CN 106026122B
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/30—Reactive power compensation
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention discloses a kind of asynchronous excitation synthesis phase modifier and its methods of reactive-load compensation and active balance, including three-phase AC excitation winding, voltage source inverter, super capacitor and voltage-source type rectifier.Super capacitor, for providing energy, and the voltage level of energy maintenance voltage source type inverter to voltage source inverter.The AC conversion of grid side is direct current for absorbing active power from grid side by voltage-source type rectifier, active to super capacitor and voltage source inverter offer, while reactive power is sent to power grid.Voltage source inverter, the DC inverter for carrying out the conveying of voltage-source type rectifier are the required three-phase AC excitation electric current of three-phase rotor field coil.Using the above structure with after method, by controlling rotor speed, so that phase modifier is absorbed a part of circuit and energy extra in power grid when short trouble occurs, inertia is stronger, is conducive to the safety and stablization of power grid；In addition reactive power compensation planning and transient performance are more preferable.
Description
Technical field
The present invention relates to the phase modifier in a kind of high voltage power transmisson system, especially a kind of synthesis phase modifier of asynchronous excitation.
Background technology
With China's expanding economy, the demand of electric power is increasingly increased, and the disequilibrium of china natural resources distribution makes
Obtaining long distance powedr transmission becomes a kind of certainty.However there are various drawbacks for traditional long range high-voltage AC transmission system, in high pressure
It there's almost no in DC transmission system, so D.C. high voltage transmission becomes a kind of trend.Although HVDC transmission system
Transmission line of electricity itself will not consume it is idle, but the current conversion station of D.C. high voltage transmission due to largely use power electronic equipment, still
It can so consume a large amount of idle.In addition, a large amount of inputs of D.C. high voltage transmission, but also the built-in inertia of power grid becomes smaller, disturbance rejection
Ability reduces.Therefore, even HVDC transmission system, the problem of there is also reactive-load compensations.
In the current electric system in China, use static passive compensation device gradually is had begun（Mainly SVC）Come
Instead of traditional phase modifier, it is because while that traditional phase modifier capacity is big, dependable performance, but dynamic regulation energy force difference, and SVC
It can then accomplish quick response.STATCOM compares SVC capacity biggers, it is often more important that because using full-controlled device IGBT, therefore
And dynamic regulation ability is stronger, the response time is shorter.Although currently also having numerous researchs about static passive compensation device,
It is almost without the precedent that both phase modifier and more advanced STATCOM join together to come into operation.
Invention content
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a kind of asynchronous excitations to integrate
Phase modifier, the asynchronous excitation synthesis phase modifier have stronger reactive-load compensation, active balance ability and dynamic regulation ability.
In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of synthesis phase modifier of asynchronous excitation, including three-phase AC excitation winding, voltage source inverter, super capacitor
With voltage-source type rectifier.
Three-phase AC excitation winding includes three-phase rotor field coil and stator winding, the excitation of three-phase AC excitation winding
Mode is asynchronous excitation.
Stator winding is connected with power grid side bus, and three-phase rotor field coil and one end of voltage source inverter are mutually gone here and there
Connection, the other end and the super capacitor of voltage source inverter are in parallel.
One end of voltage-source type rectifier is connected with power grid side bus, the other end of voltage-source type rectifier also with it is super
Capacitance is in parallel.
Super capacitor, for providing energy, and the voltage water of energy maintenance voltage source type inverter to voltage source inverter
It is flat.
The AC conversion of grid side is direct current for absorbing active power from grid side by voltage-source type rectifier,
It is active to super capacitor and voltage source inverter offer, while reactive power is sent to power grid.
Voltage source inverter, for by voltage-source type rectifier conveying come DC inverter be three-phase rotor-exciting around
The required three-phase AC excitation electric current of group.
Rotor in comprehensive phase modifier is connected with phase modulation machine controller, and phase modulation machine controller can carry out the rotating speed of rotor
It adjusts, to be balanced to the active power of power grid.
When the rotating speed of rotor in comprehensive phase modifier increases, active power will flow to voltage-source type rectification from comprehensive phase modifier
Device exports active to power grid；When the rotating speed of rotor in comprehensive phase modifier declines, active power will be from voltage-source type rectifier
The comprehensive phase modifier of flow direction, that is, absorb the extra active power of power grid.
The stator winding and voltage-source type rectifier can convey reactive power to power grid, wherein stator winding is to electricity
The reactive power of net conveying is Q1, and the reactive power that voltage-source type rectifier is conveyed to power grid is Q2.
The present invention also provides a kind of methods carrying out reactive-load compensation and active balance using asynchronous excitation synthesis phase modifier, should
A kind of method carrying out reactive-load compensation and active balance using asynchronous excitation synthesis phase modifier has stronger reactive-load compensation, active
Balanced capacity and dynamic regulation ability.
A method of reactive-load compensation and active balance are carried out using asynchronous excitation synthesis phase modifier, included the following steps：
The first step, grid disturbance signal detection：When power grid somewhere is broken down, phase modulation machine controller will receive failure
Information, and detect grid disturbance signal, which includes rotor in network voltage decline and comprehensive phase modifier
Rotating speed changes；At this point, comprehensive phase modifier will be gone to transient state operation by steady-state operation.
Second step balances network re-active power：After phase modulation machine controller detects grid disturbance signal, by the comprehensive tune of instruction
Magazine rotor reduces rotating speed, and absorption power grid is extra active, carries out network re-active power balance.
Third walks, electric network reactive compensation：Voltage source inverter will increase three-phase rotor in comprehensive phase modifier according to demand
The exciting current of Exciting Windings for Transverse Differential Protection keeps the reactive power Q 1 that stator winding is conveyed to power grid normal；Meanwhile voltage-source type rectifier
Reactive power Q 2 is conveyed to power grid, maintains voltage level of power grid.
4th step, failure removal signal receive：In setting time, if phase modulation machine controller does not receive failure removal letter
Number, then continue second step to third and walk, until receiving failure removal signal.
5th step, goes to steady-state operation：After phase modulation machine controller receives failure removal signal, network voltage restores,
Voltage source inverter in the comprehensive phase modifier of instruction is gradually reduced exciting current by phase modulation machine controller, until indices are extensive
Again to before failure, that is, go to steady-state operation.
In the third step, voltage-source type rectifier to voltage source inverter while providing energy, to issue additional nothing
The form of work(power Q2 maintains network voltage constant.
The present invention with after method, has the advantages that using the above structure：
Can not only be three-phase rotor field coil stable power-supplying 1. above-mentioned voltage-source type rectifier, while also can be to
Power grid conveys reactive power, improves the reactive power compensation planning of comprehensive phase modifier；And voltage-source type rectifier can increase electricity
Force system damps, and inhibits the concussion in electric system.
2. above-mentioned voltage source inverter can directly power to three-phase rotor field coil, three can be changed according to demand
Mutually exchange the size of exciting current so that this phase modifier has better flexibility.
3. by the adjusting to rotor speed, it can achieve the effect that be balanced active power using phase modifier, make
Obtaining the more traditional conventional phase modifier of this phase modifier has better performance.
Description of the drawings
Fig. 1 shows a kind of structural schematic diagram of asynchronous excitation synthesis phase modifier of the present invention.
Fig. 2 shows that the asynchronous excitation synthesis phase modifier of the present invention carries out the controller chassis of reactive-load compensation and active balance method
Figure.
Wherein have：
1. three-phase AC excitation winding；11. three-phase rotor field coil；12. stator winding；
2. power grid side bus；3. voltage source inverter；4. super capacitor；5. voltage-source type rectifier.
In addition, involved character definition is as follows in Fig. 2：
P：Indicate the conveying active power in grid failure state.
f：Indicate the frequency in grid failure state.
Q：Indicate the conveying reactive power in grid failure state.
U'：Indicate the voltage under grid failure state.
P1：Indicate that phase modifier absorbs the conveying active power after the extra active power of power grid.
f1：Indicate that phase modifier absorbs the mains frequency after the extra active power of power grid.
U：Indicate the network voltage after phase modifier issues additional reactive power to power grid.
Δp：Indicate the difference of the P1 after phase modifier absorbs the extra active power of power grid and former power P.
Δf：Indicate that phase modifier absorbs the difference of the mains frequency f1 and primary frequency f after the extra active power of power grid.
ΔU：Indicate the difference of network voltage U from reactive power to power grid and primary voltage U ' after phase modifier issues additional.
PI：Indicate PI algorithms, i.e. ratio and integral algorithm, for common control strategy in automatically controlling.
ω0：It indicates the rotor speed under power frequency, usually takes 3000r/min.
Specific implementation mode
The present invention is described in further detail with specific better embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of synthesis phase modifier of asynchronous excitation, including three-phase AC excitation winding 1, voltage-source type inversion
Device 3, super capacitor 4 and voltage-source type rectifier 5.
Three-phase AC excitation winding includes three-phase rotor field coil 11 and stator winding 12, three-phase AC excitation winding
Excitation mode is asynchronous excitation.
Stator winding is connected with power grid side bus 2, one end phase of three-phase rotor field coil and voltage source inverter
Series connection, the other end and the super capacitor of voltage source inverter are in parallel.
One end of voltage-source type rectifier is connected with power grid side bus, the other end of voltage-source type rectifier also with it is super
Capacitance is in parallel.
Super capacitor, for providing energy, and the voltage water of energy maintenance voltage source type inverter to voltage source inverter
It is flat.Super capacitor is energy cell, simple in structure.
The AC conversion of grid side is direct current for absorbing active power from grid side by voltage-source type rectifier,
It is active to super capacitor and voltage source inverter offer, while reactive power is sent to power grid.
In the application, voltage-source type rectifier is also the STATCOM in Fig. 2.
STATCOM namely static synchronous compensator, are both important reactive-load compensation equipment, its own is also a kind of rectification
Device.In this patent, STATCOM is used as voltage-source type rectifier, is connected with super capacitor etc..Rectification is that it is mainly made
With, while also having the function of compensating reactive power.
The make and break period of the size and switching device of the DC current that voltage-source type rectifier generates（That is the duty of PWM wave
Than）There is stringent correspondence, simultaneously because voltage-source type rectifier inherently STATCOM herein, switching device leads to
The disconnected period can influence it and reissue the size of reactive power Q 2 naturally.
Voltage source inverter, also as rotor excitation current controller, for carry out the conveying of voltage-source type rectifier
DC inverter is the required three-phase AC excitation electric current of three-phase rotor field coil.
Rotor in comprehensive phase modifier is connected with phase modulation machine controller, and phase modulation machine controller can carry out the rotating speed of rotor
It adjusts, to be balanced to the active power of power grid.
When the rotating speed of rotor in comprehensive phase modifier increases, active power will flow to voltage-source type rectification from comprehensive phase modifier
Device exports active to power grid；When the rotating speed of rotor in comprehensive phase modifier declines, active power will be from voltage-source type rectifier
The comprehensive phase modifier of flow direction, that is, absorb the extra active power of power grid.
The stator winding and voltage-source type rectifier can convey reactive power to power grid, wherein stator winding is to electricity
The reactive power of net conveying is Q1, and the reactive power that voltage-source type rectifier is conveyed to power grid is Q2.
As shown in Fig. 2, a kind of method that reactive-load compensation and active balance are carried out using asynchronous excitation synthesis phase modifier, including
Following steps.
The first step, grid disturbance signal detection：When power grid somewhere is broken down, phase modulation machine controller will receive failure
Information, and detect grid disturbance signal.
Phase modulation machine controller includes human-computer interaction interface, input signal processing unit and output unit etc..
Input signal processing unit is built in power plant where comprehensive phase modifier.Its status is similar to common power plant, Dou Yaojie
Instruction and relevant parameter by grid dispatching center simultaneously need to upload related data.
The fault message that above-mentioned phase modulation machine controller receives includes：Grid dispatching center transmits in grid failure state
Convey active-power P, the frequency f in grid failure state, the conveying reactive power Q in grid failure state and electric network fault shape
The information such as the voltage U ' under state.
The grid disturbance signal that phase modulation machine controller detects includes rotor in network voltage decline and comprehensive phase modifier
Rotating speed changes；At this point, comprehensive phase modifier will be gone to transient state operation by steady-state operation.
Second step balances network re-active power, also the real power control as in Fig. 2 controlling units：Phase modulation machine controller is examined
After measuring grid disturbance signal, the rotor in the comprehensive phase modifier of instruction is reduced into rotating speed, absorption power grid is extra active, carries out power grid
Active power balance.
As shown in Fig. 2, adjusting rotor speed ω 1 so that as ω 1>When ω 0, active power is conveyed to power grid；As ω 1<ω
When 0, absorption power grid is extra active, to realize the control of active balance.
Third walks, electric network reactive compensation, also the reactive-load compensation as in Fig. 2 controlling units and Voltage Stability Control：Voltage
Source type inverter will increase the exciting current of three-phase rotor field coil in comprehensive phase modifier according to demand, keep stator winding to
The reactive power Q 1 of power grid conveying is normal；Meanwhile voltage-source type rectifier conveys reactive power Q 2 to power grid, maintains network voltage
It is horizontal.
In above-mentioned third step, voltage-source type rectifier to voltage source inverter while providing energy, to issue additional nothing
The form of work(power Q2 maintains network voltage constant.
Namely failure generation after, on the one hand need increase rotor excitation current, on the one hand need to issue additional it is idle, that is,
It says, occurs to failure to terminate from failure, during entire failure, phase modulation machine controller will be passed to the switching device of STATCOM
The defeated PWM waveform calculated, to meet the requirement of rotor automatic field forcing and compensating reactive power.
The parameters for adjusting this phase modifier are calculated in terms of power plant by data（PWM duty cycle, the rotor of STATCOM turns
Speed etc.）, by PI algorithms, real power control, reactive-load compensation and Voltage Stability Control are carried out respectively so that the wattful power of power grid conveying
Rate is decreased to p1, and mains frequency becomes f1, and network voltage becomes U.
And the parameters of phase modifier are corrected by Δ p, Δ f, Δ U, the indices of power grid are maintained, make power grid temporary
Not unstability during state, until failure removal.
4th step, failure removal signal receive：In setting time, if phase modulation machine controller does not receive failure removal letter
Number, then continue second step to third and walk, until receiving failure removal signal.
5th step, goes to steady-state operation：After phase modulation machine controller receives failure removal signal, network voltage restores,
Voltage source inverter in the comprehensive phase modifier of instruction is gradually reduced exciting current by phase modulation machine controller, until indices are extensive
Again to before failure, that is, go to steady-state operation.
Since most failure belongs to short trouble in power grid, " failure " mentioned in this patent is also substantially
Refer to short trouble.When short trouble occurs for electric system, by " law of equal areas " it is found that in order to reduce acceleration area, Chang Cai
Strategy is exactly the output electromagnetic power for increasing generator, that is, requires to increase exciting current（That is automatic field forcing）, therefore temporary
State operation phase exciting current can be more than exciting current when normal work.So when going to normal operation, needing will be original
The high current of automatic field forcing is decreased to normal value.
To sum up, so that phase modifier is absorbed a part of circuit by controlling rotor speed in the present invention and electricity when short trouble occurs
Extra energy in net, inertia is stronger, is conducive to the safety and stablization of power grid；Asynchronous excitation con-trol system is utilized in the present invention
System, improves the reactive power compensation planning of comprehensive phase modifier, transient performance is more preferable；Voltage-source type rectification is employed herein
Device can increase power system damping, inhibit the concussion in electric system.
Compared with prior art, the present invention can utilize the advantage of novel phase modifier and voltage-source type rectifier respectively, no
The deficiency being individually present during reactive-load compensation is only overcome, but also under the premise of not increasing existing component size, greatly
Big inertia and the system damping for increasing phase modifier, is conducive to stabilization and the safe operation of power grid.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail can carry out a variety of equivalents to technical scheme of the present invention within the scope of the technical concept of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.
Claims (6)
1. a kind of asynchronous excitation integrates phase modifier, it is characterised in that：Including three-phase AC excitation winding, voltage source inverter,
Super capacitor and voltage-source type rectifier；
Three-phase AC excitation winding includes three-phase rotor field coil and stator winding, the excitation mode of three-phase AC excitation winding
For asynchronous excitation；
Stator winding is connected with power grid side bus, and one end of three-phase rotor field coil and voltage source inverter is in series,
The other end of voltage source inverter is in parallel with super capacitor；
One end of voltage-source type rectifier is connected with power grid side bus, the other end of voltage-source type rectifier also with super capacitor
It is in parallel；
Super capacitor, for providing energy, and the voltage level of energy maintenance voltage source type inverter to voltage source inverter；
The AC conversion of grid side is direct current, Xiang Chao for absorbing active power from grid side by voltage-source type rectifier
Grade capacitance and voltage source inverter offer are active, while reactive power is sent to power grid；
Voltage source inverter, the DC inverter for carrying out the conveying of voltage-source type rectifier is three-phase rotor field coil institute
The three-phase AC excitation electric current needed；
The method that asynchronous excitation synthesis phase modifier carries out reactive-load compensation and active balance, includes the following steps：
The first step, grid disturbance signal detection：When power grid somewhere is broken down, phase modulation machine controller will receive failure letter
Breath, and detect grid disturbance signal, which includes turn of rotor in network voltage decline and comprehensive phase modifier
Speed changes；At this point, comprehensive phase modifier will be gone to transient state operation by steady-state operation；
Second step balances network re-active power：After phase modulation machine controller detects grid disturbance signal, by the comprehensive phase modifier of instruction
In rotor reduce rotating speed, absorb power grid it is extra active, carry out network re-active power balance；
Third walks, electric network reactive compensation：Voltage source inverter will increase three-phase rotor-exciting in comprehensive phase modifier according to demand
The exciting current of winding keeps the reactive power Q 1 that stator winding is conveyed to power grid normal；Meanwhile voltage-source type rectifier is to electricity
Net conveying reactive power Q 2, maintains voltage level of power grid；
4th step, failure removal signal receive：In setting time, if phase modulation machine controller does not receive failure removal signal,
Then continue second step to third to walk, until receiving failure removal signal；
5th step, goes to steady-state operation：After phase modulation machine controller receives failure removal signal, network voltage restores, phase modulation
Voltage source inverter in the comprehensive phase modifier of instruction is gradually reduced exciting current by machine controller, until indices are restored to
Before failure, that is, go to steady-state operation.
2. asynchronous excitation according to claim 1 integrates phase modifier, it is characterised in that：Rotor and tune in comprehensive phase modifier
Camera controller is connected, and the rotating speed of rotor can be adjusted in phase modulation machine controller, to be carried out to the active power of power grid
Balance.
3. asynchronous excitation according to claim 2 integrates phase modifier, it is characterised in that：When turn of rotor in comprehensive phase modifier
When speed increases, active power will flow to voltage-source type rectifier from comprehensive phase modifier, i.e., exported to power grid active；When comprehensive phase modulation
When the rotating speed of rotor declines in machine, active power will flow to comprehensive phase modifier from voltage-source type rectifier, that is, it is extra to absorb power grid
Active power.
4. asynchronous excitation according to claim 1 integrates phase modifier, it is characterised in that：The stator winding and voltage-source type
Rectifier can convey reactive power to power grid, wherein the reactive power that stator winding is conveyed to power grid is Q1, and voltage-source type is whole
The reactive power that stream device is conveyed to power grid is Q2.
5. a kind of put down using asynchronous excitation synthesis phase modifier progress reactive-load compensation according to any one of claims 1-4 with active
The method of weighing apparatus, it is characterised in that：Include the following steps：
The first step, grid disturbance signal detection：When power grid somewhere is broken down, phase modulation machine controller will receive failure letter
Breath, and detect grid disturbance signal, which includes turn of rotor in network voltage decline and comprehensive phase modifier
Speed changes；At this point, comprehensive phase modifier will be gone to transient state operation by steady-state operation；
Second step balances network re-active power：After phase modulation machine controller detects grid disturbance signal, by the comprehensive phase modifier of instruction
In rotor reduce rotating speed, absorb power grid it is extra active, carry out network re-active power balance；
Third walks, electric network reactive compensation：Voltage source inverter will increase three-phase rotor-exciting in comprehensive phase modifier according to demand
The exciting current of winding keeps the reactive power Q 1 that stator winding is conveyed to power grid normal；Meanwhile voltage-source type rectifier is to electricity
Net conveying reactive power Q 2, maintains voltage level of power grid；
4th step, failure removal signal receive：In setting time, if phase modulation machine controller does not receive failure removal signal,
Then continue second step to third to walk, until receiving failure removal signal；
5th step, goes to steady-state operation：After phase modulation machine controller receives failure removal signal, network voltage restores, phase modulation
Voltage source inverter in the comprehensive phase modifier of instruction is gradually reduced exciting current by machine controller, until indices are restored to
Before failure, that is, go to steady-state operation.
6. the method that reactive-load compensation and active balance are carried out using asynchronous excitation synthesis phase modifier as claimed in claim 5,
It is characterized in that：In the third step, voltage-source type rectifier to voltage source inverter while providing energy, to issue additional nothing
The form of work(power Q2 maintains network voltage constant.
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| CN107453404A (en) * | 2017-08-08 | 2017-12-08 | 国家电网公司 | A kind of large-scale phase modifier starts combination method |
| CN108092274B (en) * | 2017-12-05 | 2021-07-02 | 国电南瑞科技股份有限公司 | Phase modulator excitation system control method based on voltage and reactive power double closed-loop control |
| CN109412170B (en) * | 2018-09-11 | 2021-07-27 | 中国电力科学研究院有限公司 | Method and system for determining phase modulator magnetic loss protection based on reactive power |
| CN111262254B (en) * | 2020-04-14 | 2020-08-11 | 中国电力科学研究院有限公司 | Phase modulator control method, phase modulator control device, phase modulator system and storage medium |
| CN112865129B (en) * | 2021-04-08 | 2023-03-28 | 哈尔滨理工大学 | Static phase modifier |
| CN113410847B (en) * | 2021-08-04 | 2022-11-11 | 国网黑龙江省电力有限公司电力科学研究院 | Excitation control method of asynchronous phase modulator |
| CN113595141A (en) * | 2021-08-10 | 2021-11-02 | 哈尔滨理工大学 | AC excitation device of asynchronous phase modulator |
| CN117081098B (en) * | 2023-07-20 | 2024-04-19 | 华中科技大学 | High-inertia high-power rapid frequency/voltage stabilizing device for new energy power system |
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| CN102324747A (en) * | 2011-08-17 | 2012-01-18 | 国电联合动力技术有限公司 | Control method for double-feed wind power generation unit to support reactive power regulation of wind farm |
| CN103078349A (en) * | 2013-01-17 | 2013-05-01 | 河海大学 | Double-fed wind driven generator system and low-voltage through control method |
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| US9447772B2 (en) * | 2014-12-18 | 2016-09-20 | General Electric Company | Systems and methods for increasing wind turbine power output |
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| CN102324747A (en) * | 2011-08-17 | 2012-01-18 | 国电联合动力技术有限公司 | Control method for double-feed wind power generation unit to support reactive power regulation of wind farm |
| CN103078349A (en) * | 2013-01-17 | 2013-05-01 | 河海大学 | Double-fed wind driven generator system and low-voltage through control method |
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