CN106451496B - A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation - Google Patents
A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation Download PDFInfo
- Publication number
- CN106451496B CN106451496B CN201610921623.1A CN201610921623A CN106451496B CN 106451496 B CN106451496 B CN 106451496B CN 201610921623 A CN201610921623 A CN 201610921623A CN 106451496 B CN106451496 B CN 106451496B
- Authority
- CN
- China
- Prior art keywords
- low
- frequency
- frequency oscillation
- network voltage
- component
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 230000010355 oscillation Effects 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000001514 detection method Methods 0.000 claims description 12
- 230000009466 transformation Effects 0.000 claims description 12
- 230000001629 suppression Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims 1
- 235000013350 formula milk Nutrition 0.000 claims 1
- 230000005764 inhibitory process Effects 0.000 abstract description 11
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- 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
-
- H02J3/386—
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation, this method is detected and has been extracted to network voltage low-frequency oscillation component, and the low-frequency oscillation component of exchange is converted by control algolithm for DC quantity, closed-loop control has been carried out to network voltage low-frequency oscillation under direct current coordinate system, has realized the complete inhibition to network voltage low-frequency oscillation.
Description
Technical field
The present invention relates to a kind of methods for quickly inhibiting the low-frequency oscillation of large-scale wind powered generation syst network voltage, pass through wind-force
The control algolithm of reactive power compensator realizes the quick inhibition to network voltage low-frequency oscillation in electricity generation system.
Background technique
It is grid-connected in electric system with the continuous development of wind generating technology and being continuously increased for wind-power electricity generation installed capacity
Wind power generating set, fan converter and reactive power compensator it is more and more.It is wind power generating set, fan converter, idle
Interaction between compensation device and electric system also becomes increasingly complex and closely, wind farm tie point is caused electricity occur
Net voltage low-frequency oscillation phenomenon, is easy to cause wind power generating set off-grid, and regional power failure is even caused when serious.
At present the wind power resources such as the Xinjiang in China and Hebei are abundant, the biggish area of wind power generating set installed capacity
It has been found that the phenomenon that network voltage low-frequency oscillation, result in part wind power generating set off-grid, if not to network voltage low frequency
Oscillatory occurences is effectively inhibited, and will be had an adverse effect to the development of China's wind generating technology.At present both at home and abroad expert and
This network voltage low-frequency oscillation that scholar occurs during to new energy grid-connected power is analyzed and is studied, and is visited
The effective measures of rope inhibition network voltage low-frequency oscillation.
Summary of the invention
The object of the present invention is to provide a kind of quick suppressing method of Large Scale Wind Farm Integration network voltage low-frequency oscillation, this method
By reactive power compensator, the voltage signal of reactive power compensator and grid connection point is detected, the low of grid voltage amplitude is extracted
Frequency oscillating component generates the command signal that reactive power compensator exports electric current by PID closed loop control algorithm, eventually by idle
Compensation device output electric current effectively inhibits the low-frequency oscillation of network voltage.
To achieve the above object, the present invention is implemented with the following technical solutions:
A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation, reactive power compensator is passed through
On reactor or connection transformers connected in parallel to power grid, tie point mains voltage signal is detected, is examined by low frequency component detection algorithm
Network voltage low-frequency oscillation component is surveyed, inhibits link to make reactive power compensator output and power grid electricity by network voltage low-frequency oscillation
Press the compensation electric current of low-frequency oscillation same frequency, the usual electric current and tie point power grid, wind power generating set and fan converter phase
Interaction, the effective network voltage low-frequency oscillation for inhibiting wind generator system grid connection point.
The low-frequency oscillation component detection algorithm are as follows: according to the fundamental frequency ω of network voltagefWith m-Acetyl chlorophosphonazo frequencies omegah1
And ωh2, calculate the frequencies omega of network voltage low-frequency oscillationl, the low-frequency oscillation frequency isAndUsing network voltage fundamental frequency ωfPARK transformation, gained network voltage DQ are carried out to three-phase power grid voltage
Axis component main component is DC quantity and network voltage low-frequency oscillation frequencies omegalComponent.
It is ω that network voltage low-frequency oscillation component, which is still frequency, under the DQ rotating coordinate system that above-mentioned detection algorithm obtainsl's
Of ac, amplitude and phase deviation can be had by directly carrying out closed-loop control using PID controller, cannot achieve low to network voltage
The complete inhibition of frequency oscillating component.Therefore root mean square is carried out to network voltage DQ axis component and seeks operation, obtain network voltage width
Value signal UmagAnd by with ωlFor pure network voltage width can be obtained after the band-pass filter processing of center frequency
It is worth low-frequency oscillation component signal.
Applying frequency ω againlCarrying out phase synchronization rotating coordinate transformation to the signal can be obtained and network voltage low frequency
DQ axis DC component under the corresponding single-phase rotating coordinate system of oscillating component.
It is ω in the frequencylSynchronous rotating frame under DQ axis respectively to network voltage low-frequency oscillation component carry out
PID closed-loop control, since instruction and feedback signal are DC quantity, causing pid control algorithm, there is no amplitude and phase are quiet
Difference, it is network voltage low-frequency oscillation frequencies omega that PID closed loop output signal produces frequency after phase synchronization rotates inverse transformationl
Single phase ac signal, using the single phase ac signal as reactive power compensator output current amplitude low frequency command signal, control
Reactive power compensator equipment processed exports electric current low-frequency fluctuation amplitude, it can realizes effective suppression to network voltage low-frequency oscillation
System.
Reactive power compensator of the present invention is to the feature of network voltage low-frequency oscillation inhibition strategy: using above-mentioned power grid
After voltage low-frequency oscillation suppression method, the reactive current amplitude of reactive power compensator output is no longer stable DC quantity, but
It is ω that frequency has been superimposed in DC quantitylLow-frequency ac amount.The reactive compensation electric current of the low-frequency fluctuation of reactive power compensator output
It interacts with the impedance loop of other equipment in power grid and power grid, network voltage can be made to generate new low frequency wave momentum, it is new to produce
Raw network voltage low frequency fluctuation component is identical as the original low-frequency oscillation component frequencies of network voltage and opposite in phase, therefore meeting
When tie point Network Voltage Stability, to realize the inhibition to network voltage low-frequency oscillation.
The reactive power compensator is the cascade high-voltage chain type SVG of H bridge.
The reactive power compensator is that the H bridge with step-down transformer cascades chain type SVG.
The reactive power compensator is multiple inverter configuration SVG device.
The reactive power compensator is MMC type high pressure SVG device.
The reactive power compensator is voltage-dropping type MMC type SVG device.
The reactive power compensator is two level SVG device of devices in series.
The reactive power compensator is thyristor-type SVG device.
This method is led to by improving reactive power compensator control algolithm, detection and extraction network voltage low-frequency oscillation component
It crosses PID controller and carries out closed-loop control, finally make the inhibition electric current of reactive power compensator output amplitude low-frequency fluctuation, realize to electricity
Effective inhibition of net voltage low-frequency oscillation, can significantly improve Large Scale Wind Farm Integration Network Voltage Stability.Further include following advantages:
1) fast response time
When reactive power compensator is the high-voltage chain type SVG or STATCOM based on wholly-controled device, system has quick
Response speed.The main reason is that can according to need based on wholly-controled device reactive power compensator to wholly-controled device
The switch state of (IGBT, IGCT etc.) carries out any control.Moreover, the switching frequency or equivalent switching frequency of device often compared with
The on-off times of height, general each power frequency period can be from several times to tens times.
2) compensation range is wide
Since network voltage low-frequency oscillation component is detected and having been extracted, and the low-frequency oscillation component of exchange is passed through
Control algolithm converts for DC quantity.Closed-loop control, Ke Yishi have been carried out to network voltage low-frequency oscillation under direct current coordinate system
Now to the complete inhibition of network voltage low-frequency oscillation.When the compensation capacity of reactive power compensator is limited, when can not completely inhibit,
It can not exclusively be inhibited according to place capacity, have the characteristics that compensation range is wide.
3) the Large Scale Wind Farm Integration network voltage low-frequency oscillation occurred at present, and implementation method letter be can effectively solve the problem that
It is single, simple upgrade is carried out to existing reactive power compensator without increasing extras or only needing, saves land occupation and cost.
Detailed description of the invention
Fig. 1 is that Large Scale Wind Farm Integration network voltage low-frequency oscillation inhibits schematic illustration.
Fig. 2 is grid voltage amplitude low-frequency oscillation component detection algorithm schematic diagram.
Fig. 3 is grid voltage amplitude low-frequency oscillation component DQ axis DC component detection algorithm schematic diagram.
Fig. 4 is that network voltage low-frequency oscillation inhibits ring control block diagram.
Fig. 5 is network voltage low-frequency oscillation waveform when low-frequency oscillation restrainable algorithms not being added.
Fig. 6 is the grid voltage amplitude signal detected after PARK is converted.
Fig. 7 is the grid voltage amplitude low-frequency oscillation component after bandpass filter.
Fig. 8 is the DQ axis DC quantity of grid voltage amplitude low-frequency oscillation after phase synchronization rotating coordinate transformation.
Fig. 9 is the reactive current waveform that reactive power compensator exports after low-frequency oscillation restrainable algorithms are added.
Figure 10 is that grid voltage waveform after low-frequency oscillation restrainable algorithms is added.
Specific embodiment
Describe a specific embodiment of the invention in detail with reference to the accompanying drawing.
Fig. 1 is power oscillation damping schematic illustration, and reactive power compensator is passed through reactor or connection transformers connected in parallel
On the power grid of wind power plant, by the voltage magnitude low-frequency oscillation component in detection power grid, due to network voltage low-frequency oscillation
Component is detected and has been extracted, and the low-frequency oscillation component of exchange is converted by control algolithm for DC quantity.In direct current
Closed-loop control has been carried out to network voltage low-frequency oscillation under coordinate system, the complete suppression to network voltage low-frequency oscillation may be implemented
System.
The present invention divides since network voltage low-frequency oscillation component is detected and having been extracted, and by the low-frequency oscillation of exchange
Amount is converted by control algolithm for DC quantity.Closed-loop control has been carried out to network voltage low-frequency oscillation under direct current coordinate system,
The complete inhibition to network voltage low-frequency oscillation may be implemented.
Fig. 2 is grid voltage amplitude low-frequency oscillation component detection algorithm.Three-phase power grid voltage is carried out such as following formula institute first
The PARK transformation shown, obtains network voltage DQ axis component, opens radical sign operation by quadratic sum and obtain grid voltage amplitude signal,
In contain DC component and low-frequency oscillation component, can be detected out grid voltage amplitude low-frequency oscillation point using bandpass filter
Measure signal.
Fig. 3 is grid voltage amplitude low-frequency oscillation component DQ axis DC component detection algorithm, is converted by single-phase DQ and low
Pass filter algorithm can be obtained the corresponding direct current signal of grid voltage amplitude low-frequency oscillation component under synchronous rotating frame.
Fig. 4 is that network voltage low-frequency oscillation inhibits ring control block diagram, first to grid voltage amplitude under rotating coordinate system
Oscillating signal carry out PID closed-loop control, after the synchronized rotation inverse transformation of controller output signal generate reactive compensation fill
The referenced reactive current value for setting low-frequency oscillation restrainable algorithms, the exchange referenced reactive current value that low-frequency oscillation restrainable algorithms are exported
The direct current referenced reactive current value generated with reactive power compensator conventional control algorithm is superimposed, ultimately generates reactive power compensator
Referenced reactive current signal.Current control link inside reactive power compensator will make reactive power compensator export reactive current
Trace command signal, to quickly inhibit network voltage low-frequency oscillation.
Fig. 5 is that grid voltage waveform before low-frequency oscillation restrainable algorithms is added, it can be seen that have in grid voltage amplitude has very much
Biggish low-frequency oscillation component.
Fig. 6 is the grid voltage amplitude signal detected after PARK is converted, and grid voltage amplitude is other than DC component, also
Contain biggish low frequency AC components.To realize that low-frequency oscillation inhibits, it is necessary to which amplitude and phase to low-frequency oscillation component carry out
Detection.
Fig. 7 is the grid voltage amplitude low-frequency oscillation component after bandpass filter, which is pure
Low-frequency ac amount.Closed loop inhibition can be directly carried out to the oscillating component at this time, but traditional PID controller is to AC compounent
Control can have amplitude and phase error, influence the effect that system inhibits low-frequency oscillation.
Fig. 8 is the DQ axis DC quantity of grid voltage amplitude low-frequency oscillation after phase synchronization rotating coordinate transformation, phase synchronization
Rotating coordinate transformation can use algorithm shown in Fig. 3, first can also construct three-phase ac signal, Zhi Houzai by monophasic pulses
PARK transformation is carried out to three-phase ac signal.
The reactive current waveform of reactive power compensator output after low-frequency oscillation restrainable algorithms is added in Fig. 9, at this time current waveform
In addition to stable reactive current ingredient, also the idle ingredient of the exchange containing low-frequency fluctuation, low-frequency fluctuation frequency and power grid low frequency shake
It is equal to swing frequency.
Figure 10 is that grid voltage waveform after low-frequency oscillation restrainable algorithms is added, and the low-frequency oscillation component of network voltage has been at this time
Through being completely suppressed.
In real system, due to network voltage low-frequency oscillation be AC network, reactive power compensator, wind power generating set and
The various equipment such as fan converter interaction and caused by influencing each other, when each equipment running status of system conflicts, electricity
When net voltage starts to occur slight low frequency oscillation, reactive power compensator can quickly be carried out network voltage low-frequency oscillation component
It accurately detects and controls, to can also quickly inhibit to low-frequency oscillation, low-frequency oscillation is avoided to deteriorate, to tie up
Hold wind farm voltage stabilization.
Claims (1)
1. a kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation, this method is to network voltage low frequency
Oscillating component is detected and has been extracted, and the low-frequency oscillation component of exchange is converted by control algolithm for DC quantity,
Closed-loop control has been carried out to network voltage low-frequency oscillation under direct current coordinate system, has realized the complete suppression to network voltage low-frequency oscillation
System；
The detection algorithm of the network voltage low-frequency oscillation component are as follows: according to network voltage fundamental frequency ωfWith m-Acetyl chlorophosphonazo frequency
ωh1And ωh2, calculate the frequencies omega of network voltage low-frequency oscillationl, the low-frequency oscillation frequency isAndUsing network voltage fundamental frequency ωfPARK transformation is carried out to three-phase power grid voltage, obtains network voltage DQ
Axis component opens radical sign operation by quadratic sum and obtains grid voltage amplitude signal, wherein containing DC component and low-frequency oscillation
Component can be detected out grid voltage amplitude low-frequency oscillation component signal using bandpass filter；The PARK transformation for mula
It is as follows:
Network voltage DQ axis component under the DQ rotating coordinate system that above-mentioned detection algorithm obtains, then carry out root mean square and seek operation, it obtains
To grid voltage amplitude signal UmagAnd by with ωlIt is pure to can be obtained after the band-pass filter processing of center frequency
Grid voltage amplitude low-frequency oscillation component signal；
Applying frequency ω againlTo the signal carry out phase synchronization rotating coordinate transformation and LPF low-pass filtering treatment can be obtained with
DQ axis DC component under the corresponding single-phase rotating coordinate system of network voltage low-frequency oscillation component；
It is ω in the frequencylSynchronous rotating frame under DQ axis respectively to network voltage low-frequency oscillation component carry out PID closed loop
Control, it is network voltage low-frequency oscillation frequency that PID closed loop output signal produces frequency after phase synchronization rotates inverse transformation
ωlSingle phase ac signal, using the single phase ac signal as reactive power compensator output current amplitude low frequency command signal,
It controls reactive power compensator equipment and exports electric current low-frequency fluctuation amplitude, it can realize effective suppression to network voltage low-frequency oscillation
System.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921623.1A CN106451496B (en) | 2016-10-21 | 2016-10-21 | A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610921623.1A CN106451496B (en) | 2016-10-21 | 2016-10-21 | A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106451496A CN106451496A (en) | 2017-02-22 |
| CN106451496B true CN106451496B (en) | 2019-04-12 |
Family
ID=58176817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610921623.1A Active CN106451496B (en) | 2016-10-21 | 2016-10-21 | A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106451496B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109217335B (en) * | 2018-08-22 | 2020-07-10 | 华中科技大学 | Low-frequency oscillation damping control method for alternating current power system of offshore wind power VSC-HVDC output system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035211A (en) * | 2010-10-26 | 2011-04-27 | 国家电网公司 | Method, device and system for inhibiting low-frequency oscillation of power system |
| CN202206145U (en) * | 2011-06-28 | 2012-04-25 | 辽宁荣信众腾科技有限公司 | Restraining device for low-frequency oscillation of voltage of distribution network |
| CN102780226A (en) * | 2012-08-08 | 2012-11-14 | 西安交通大学 | Direct-current-side voltage control method of cascaded STATCOM (static var compensator) based on chopping-control voltage sharing and control circuit |
| CN104377714A (en) * | 2014-11-17 | 2015-02-25 | 荣信电力电子股份有限公司 | SVG-based compensation method for low-frequency oscillation of power grid |
| CN105098803A (en) * | 2015-10-08 | 2015-11-25 | 中南大学 | STATCOM (static synchronous compensator) based subsynchronous oscillation and low frequency oscillation suppression method for wind farm |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10158230B2 (en) * | 2013-06-18 | 2018-12-18 | Vestas Wind Systems A/S | Compensating electrical harmonics on the electrical grid |
-
2016
- 2016-10-21 CN CN201610921623.1A patent/CN106451496B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102035211A (en) * | 2010-10-26 | 2011-04-27 | 国家电网公司 | Method, device and system for inhibiting low-frequency oscillation of power system |
| CN202206145U (en) * | 2011-06-28 | 2012-04-25 | 辽宁荣信众腾科技有限公司 | Restraining device for low-frequency oscillation of voltage of distribution network |
| CN102780226A (en) * | 2012-08-08 | 2012-11-14 | 西安交通大学 | Direct-current-side voltage control method of cascaded STATCOM (static var compensator) based on chopping-control voltage sharing and control circuit |
| CN104377714A (en) * | 2014-11-17 | 2015-02-25 | 荣信电力电子股份有限公司 | SVG-based compensation method for low-frequency oscillation of power grid |
| CN105098803A (en) * | 2015-10-08 | 2015-11-25 | 中南大学 | STATCOM (static synchronous compensator) based subsynchronous oscillation and low frequency oscillation suppression method for wind farm |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106451496A (en) | 2017-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106786664B (en) | Wind turbine generator side active subsynchronous oscillation suppression device and method thereof | |
| Hu et al. | Impedance-based analysis and stability improvement of DFIG system within PLL bandwidth | |
| Pozzebon et al. | Operation of a three-phase power converter connected to a distribution system | |
| CN108718094A (en) | A method of it improving large-sized photovoltaic system low-voltage and passes through performance | |
| CN107069809A (en) | A kind of directly driven wind-powered current transformer high voltage crossing control method | |
| CN109873458B (en) | Reactive current reference value and active current reference value adjusting method and device | |
| CN106841874B (en) | Electronic anti-islanding testing device for photovoltaic grid-connected inverter | |
| CN107681662A (en) | Possesses the virtual synchronous generator control method of quality of power supply complex controll function | |
| CN105552955A (en) | Control system and method for low-voltage and zero-voltage ride through of photovoltaic grid-connected inverter | |
| CN110661273A (en) | Damping control method and system for inhibiting low-frequency oscillation and subsynchronous oscillation | |
| Zhang et al. | Research on high-frequency resonance mechanism and active harmonic suppression strategy of power systems with power electronics | |
| Zhu et al. | Protected control method for power conversion interface under unbalanced operating conditions in AC/DC hybrid distributed grid | |
| CN110112792A (en) | A kind of virtual synchronous machine low voltage crossing control strategy of fast reactive support | |
| CN104300577B (en) | Generation of electricity by new energy and the islet operation method of D.C. high voltage transmission direct connection system | |
| Yin et al. | Impedance-Based Characterization of Positive–Negative Sequence Separation and Its Effects on MMC-HVDC Stability | |
| Zarei et al. | Performance improvement of AC-DC power converters under unbalanced conditions | |
| CN104505841B (en) | The Static Synchronous generator reactive support and control method of power grid asymmetry short circuit fault | |
| Zheng et al. | Control strategy for suppressing power oscillation of virtual synchronous generator under unbalanced grid voltage | |
| CN103117562A (en) | Control method of high-voltage cascade energy feedback converter power module | |
| CN106451496B (en) | A kind of quick suppressing method of large-scale wind powered generation syst network voltage low-frequency oscillation | |
| CN112003324A (en) | Improved micro-grid control method based on composite filtering algorithm | |
| Wang et al. | A novel low voltage ride through control strategy based on virtual synchronous generator | |
| Rezaei et al. | Sliding mode control of a grid-connected distributed generation unit under unbalanced voltage conditions | |
| Liang et al. | Control analysis of inverter parallel system based on virtual synchronous generator | |
| Li et al. | Control stratories for grid-connected and island dualmode operated inverter under unbalanced grid voltage conditions |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 830011 Xinjiang Uygur Autonomous Region Urumqi Hi-tech Industrial Development Zone (New Urban District) No. 66 East Lane, Changchun Middle Road Applicant after: STATE GRID XINJIANG ELECTRIC POWER CO., LTD., ELECTRIC POWER Research Institute Applicant after: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. Address before: 830011 Xinjiang Uygur Autonomous Region Urumqi Hi-tech Industrial Development Zone (New Urban District) No. 66 East Lane, Changchun Middle Road Applicant before: ELECTRIC POWER SCIENCES RESEARCH INSTITUTE OF STATE GRID XINJIANG ELECTRIC POWER Co. Applicant before: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190314 Address after: 830011 Xinjiang Uygur Autonomous Region Urumqi Hi-tech Industrial Development Zone (New Urban District) No. 66 East Lane, Changchun Middle Road Applicant after: STATE GRID XINJIANG ELECTRIC POWER CO., LTD., ELECTRIC POWER Research Institute Applicant after: LIAONING RONGXIN INDUSTRIAL ELECTRIC POWER TECHNOLOGY CO.,LTD. Address before: 830011 Xinjiang Uygur Autonomous Region Urumqi Hi-tech Industrial Development Zone (New Urban District) No. 66 East Lane, Changchun Middle Road Applicant before: STATE GRID XINJIANG ELECTRIC POWER CO., LTD., ELECTRIC POWER Research Institute Applicant before: MONTNETS RONGXIN TECHNOLOGY GROUP CO.,LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |