CN107681662A - Possesses the virtual synchronous generator control method of quality of power supply complex controll function - Google Patents
Possesses the virtual synchronous generator control method of quality of power supply complex controll function Download PDFInfo
- Publication number
- CN107681662A CN107681662A CN201710975824.4A CN201710975824A CN107681662A CN 107681662 A CN107681662 A CN 107681662A CN 201710975824 A CN201710975824 A CN 201710975824A CN 107681662 A CN107681662 A CN 107681662A
- Authority
- CN
- China
- Prior art keywords
- virtual
- current
- virtual synchronous
- synchronous generator
- control method
- 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.)
- Granted
Links
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
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- 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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
-
- 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
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Eletrric Generators (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
Possess the virtual synchronous generator control method of quality of power supply complex controll function, locked comprising SOGI PLL and mutually generate four bridge legs current driving signal with the decomposition of three-phase voltage positive-sequence component, the control of virtual synchronous generator power outer shroud, virtual impedance control, the FBD harmonic detectings based on SGT wave filters, the current inner loop control based on multiple quasi- PR controllers, 3D SVPWM modulation.Virtual synchronous generator power outer shroud controls, and makes the output characteristics of this control strategy output fundamental power simulation synchronous generator；Virtual impedance controls, and makes the output impedance invention increases inverter；FBD harmonic detectings based on SGT wave filters and the current inner loop control based on multiple quasi- PR controllers, can accurately complete rapidly the detection and compensation of harmonic current, out-of-balance current and reactive current；3D SVPWM modulation generation three-phase four-leg inverter drive signals.The present invention possesses multiple functions, extends the function of virtual synchronous machine, enrich the application scenarios of virtual synchronous machine while synchronous generator output characteristics is simulated.
Description
Technical field
The present invention relates to Multifunctional inverter control technology technical field, and in particular to controls virtual synchronous machine and harmonic wave
Compensation, out-of-balance current compensation, no-power compensation function are combined, and possess quality of power supply complex controll function more particularly to one kind
Virtual synchronous generator control method.
Background technology
Most distributed energy needs to access power network by converters.When new energy installed capacity is low
When, because conventional electric generators can provide support for the stability of a system, this control mode will not be brought to the stability of system
Very big harm.However, as increasing new energy accesses power network, conventional electric generators are not enough to continue to power system
Stable operation.Moreover, the distributed generation system using converters as interface lacks possessed by conventional motors
Inertia and damping, thus power system is easier to be influenceed by power swing and the system failure.
Distributed generation system in the case where virtual synchronous machine controls, which can imitate conventional synchronization machine and be provided for power system, to be used to
Property with damping characteristic, be actively engaged in power grid voltage regulating frequency modulation, improve stability of power system to a certain extent.Virtual synchronous at present
Machine only by controlling the dynamical output of active and reactive power to provide inertia and Damper Braces to power network, participates in power grid voltage regulating mostly
Frequency modulation, function is more fixed, could not give full play to the characteristics of power electronic equipment control is flexible.
Virtual synchronous machine is mainly used in active distribution network at present.Usually ensure the electric energy matter in active distribution network
Amount is produced, it is necessary to set up Active Power Filter-APF (Active Power Filter, APF) to compensate nonlinear load in power distribution network
Raw harmonic wave, imbalance or even reactive current.Active Power Filter-APF is used as again by power electronic equipment and network interface,
It can be considered to make virtual synchronous machine be combined with power quality controlling function phase, so as to reduce the throwing of Active Power Filter-APF
Money.
The content of the invention
In order to solve above-mentioned problem, present invention offer is a kind of to possess the virtual same of quality of power supply complex controll function
Generator control method is walked, the control strategy is established on the basis of three-phase four-leg inverter circuit structure, in the synchronous hair of simulation
While motor output characteristics, under non-ideal grid conditions harmonic current, out-of-balance current and reactive-load compensation have been also equipped with
Function, the function of virtual synchronous machine is extended, enrich the application scenarios of virtual synchronous machine, to be provided up to this purpose, the present invention
Possesses the virtual synchronous generator control method of quality of power supply complex controll function, the control method is in three-phase four-arm inversion
Carry out, comprise the following steps on the basis of device circuit structure, it is characterised in that：
1) SOGI-PLL locks mutually decompose with three-phase voltage positive-sequence component；
1) virtual synchronous generator power outer shroud controls；
2) virtual impedance controls；
3) FBD harmonic currents, out-of-balance current and Detecting Reactive Current based on SGT wave filters；
4) current inner loop control based on multiple quasi- PR controllers；
5) 3D-SVPWM modulation generation four bridge legs current driving signal.
As the present invention further, the step 1) is to line voltage, i.e. filter capacitor voltage uCabc=[uCa, uCb, uCc]T
SOGI-PLL computings are carried out, obtain its phase theta, frequencies omegagWith amplitude Ug；Recycle uCabcInstantaneous value is with θ to uCabcCarry out positive sequence
Decompose, obtain uCabcPositive-sequence component uCabc +=[uCa +, uCb +, uCb +]T。
As the present invention further, the step 2) includes virtual synchronous machine output two times of power frequency average value meters of instantaneous power
Calculate, active-generator rotor angle ring, virtual synchronous machine the is idle-Voltage loop of virtual synchronous machine, the step generates virtual synchronous machine in dq0 coordinates
Virtual built-in potential instantaneous value e under systemdq0=[ed, eq, e0]T。
As the present invention further, the step 3) utilizes virtual built-in potential instantaneous value e caused by step 1)dq0And electricity
Net voltage-phase θ, reference value e of the virtual built-in potential under α β γ coordinate systems is generated by iPark conversioncβγ *=[eα *, eβ *,
eγ *]T；To the capacitance voltage positive-sequence component u under abc coordinate systemsCabc +Clarke conversion is carried out, is converted to α β γ coordinate systems
Lower uCαβγ=[uCα, uCβ, uCγ]T；eαβγ *With uCαβγControlled more afterwards by virtual impedance, obtain fundamental power reference current
iαβγ *=[iα *, iβ *, iγ *]T。
As the present invention further, the virtual impedance includes virtual resistance RvWith virtual reactance Lv, the virtual impedance thing
It is identical with synchronous motor stator resistance and synchronous inductance to manage meaning, and ω is setnLv＞ ＞ Rv, virtual impedance bag of the present invention
Include virtual resistance RvWith virtual reactance Lv, its physical significance is identical with synchronous motor stator resistance and synchronous inductance.Set
ωnLv＞ ＞ Rv, increase inverter contributes to the solution of virtual synchronous machine active power and reactive power to the perception between power network
Coupling controls, and suppresses more virtual synchronous machine parallel runnings and forms harmonic circulating current.
As the present invention further, the step 4) utilizes load current iload=[iloada, iloadb, iloadc]T, electric capacity electricity
Positive pressure order components uCabc +And phase theta, pass through FBD harmonic currents, out-of-balance current and Detecting Reactive Current based on SGT wave filters
Method, by iloadIn non-fundamental active current component iloadh=[iloadha, iloadhb, iloadhc]TSeparate, and by iloadhFrom
Abc coordinate systems are converted to α β γ coordinate systems and obtain harmonic reference current iloadh *=[iloadhα *, iloadhβ *, iloadhγ *]T。
As the present invention further, by general FBD Harmonic Detecting Algorithms in the FBD Harmonic detections based on SGT wave filters
Middle low pass filter realized using Sliding Goertzel algorithm, and this method has a fast response time, and dynamic response time is easy
Regulation, non-overshoot, it is easy to the advantages such as digital signal processor (Digital Signal Processor, DSP) realization.
As it is of the invention further, the step 4) is by fundamental power reference current iαβγ *With harmonic reference current iloadh *
Addition obtains electric current loop reference value, by electric current loop reference value and the filter inductance electric current i by Clarke conversionLαβγ=[iLα,
iLβ, iLγ]TIt is compared, and then using multiple quasi- PR controls to the fundamental wave of each component under α β γ coordinate systems and 5,7,11,13 times
Harmonic components compensate, and obtain voltage signal u to be modulated under α β γ coordinate systemsmod=[umodα, umodβ, umodγ]T。
As the present invention further, the step 5) is by 3D-SVPWM modulator approaches, the α β γ obtained using step 4)
Voltage signal u to be modulated under coordinate systemmod, generate three-phase four-leg inverter drive signal.
The present invention has the beneficial effect that：
The present invention can realize that three-phase four-arm combining inverter output fundamental active and reactive power artificially accurately control；
Control method of the present invention can simulate the primary frequency modulation of synchronous generator, a pressure regulation and inertial properties, participate in power network regulation, carry
For inertia and Damper Braces, contribute to the stabilization of power network；Control method of the present invention being capable of effective compensation nonlinear-load band simultaneously
Harmonic current, out-of-balance current and the reactive current come, distribution network electric energy quality is improved, reduces the throwing of Active Power Filter-APF
Money.
Brief description of the drawings
Fig. 1 is the topological structure of three-phase four-arm combining inverter of the present invention；
Fig. 2 is the main circuit topological structure of three-phase four-arm combining inverter of the present invention；
Fig. 3 is virtual synchronous generator power outer shroud control structure figure of the present invention；
Fig. 4 is virtual impedance control structure figure of the present invention；
Fig. 5 is the FBD harmonic detecting control structure figures of the invention based on SGT wave filters；
Fig. 6 is the Bode figures of SGT wave filters after the present invention simplifies；
Fig. 7 is the current inner loop control control structure figure of the invention based on multiple quasi- PR controllers.
Embodiment
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
The present invention provides a kind of virtual synchronous generator control method for possessing quality of power supply complex controll function, the present invention
Make virtual synchronous equipment for harmonic wave, out-of-balance current, no-power compensation function, so not only the function of extended virtual synchrony machine with should
With scene, while reduce power quality controlling equipment investment in power distribution network.
The present invention gives the main circuit topological structure of three-phase four-arm combining inverter, wherein Q as shown in Fig. 1 Fig. 21~
Q8Form three-phase four-bridge arm converter, AC filter inductance L1(r1Represent its dead resistance), filter capacitor C1Form the filter of LC types
Ripple device, LnRepresent center line filter inductance (rnRepresent its dead resistance), LsRepresent power network equivalent inductance.DC side is by distributed electrical
Source and energy storage rationally control through DC/DC converters keeps DC voltage UdcIt is stable can (control method of this aspect more into
It is ripe to repeat no more), DC side can be considered stable voltage source.
The present invention is needed to three pole reactor electric current iLabc=[iLa, iLb, iLc]T, grid side electric current iGabc=[iGa, iGb, iGc
]T, three phase capacitance voltage uCabc=[uCa, uCb, uCc]TWith threephase load electric current iload=[iloada, iloadb, iloadc]TAdopted
Sample.Comprise the following steps that：
1. couple uCabcA phase voltages instantaneous value carry out SOGI-PLL computings, obtain electric network voltage phase θ, electrical network angular frequency
ωgWith grid voltage amplitude Ug.SOGI-PLL control method is very ripe and fixed, is no longer described in detail herein.To eliminate three
The uneven influence with voltage harmonic of phase voltage, to uCabcPositive-sequence component decomposition is carried out, positive-sequence component decomposition step is as follows：
1) by uCabcChanged from abc coordinate systems to dq0 coordinate systems uCdq0=[uCd, uCq, uC0]T, it is shown below：
2) to uCdq0D axis components uCdWith q axis components uCqLPF is carried out, obtains uCdq0Positive-sequence component uCdq0 +=
[uCd +, uCq +, uC0 +]T(wherein uC0 +=0).LPF uses SGT wave filters herein, is specifically introduced in step 4.
3) by uCdq0 +Changed from dq0 coordinate systems to abc coordinate systems, obtain positive-sequence component uCabc +=[uCa +, uCb +, uCc +]T, such as
Shown in following formula：
2. virtual synchronous generator power outer shroud controls.To simulate synchronous generator primary frequency function, foundation has as follows
Work(- frequency equation：
Pm=Pset+Kf(ωn-ωg)
In formula, PsetFor virtual synchronous machine active power of output setting value, W；KfFor frequency difference coefficient, W/rad；ωnFor
Specified angular frequency, rad/s, the occasion value for being 50Hz in power network rated frequency are 100 π；PmFor virtual machine power, W is and same
The input mechanical output of step machine is corresponding.
To simulate voltage regulation function of synchronous generator, following idle-voltage equation is established：
Qm=Qset+Kv(Un-Ug)；
In formula, QsetFor virtual synchronous machine output reactive power setting value, Var；KvFor voltage difference coefficient, Var/V；UnFor
Rated voltage amplitude, V；QmInstructed for virtual synchronous machine reactive power, Var is corresponding with the reactive power instruction of synchronous machine.For
Make virtual synchronous equipment for no-power compensation function, i.e., in Ug=UnIn the case of ensure grid-connected current be free of reactive component, make Qset
=0
For simulation synchronous generator inertia and damping characteristic, following inertia and damping control transmission function are established：
In formula, J is virtual rotation inertia, kg/m2, and the amount makes virtual synchronous machine power output show inertia；D is damping
Coefficient, Nms/rad, the amount make virtual synchronous machine output characteristics show damping characteristic；δ is virtual built-in potential generator rotor angle,
rad；PeAverage value of the instantaneous active power in half of power frequency period is exported for virtual synchronous machine, W, is shown below：
In formula, TlineFor power frequency period, s.It is in order to instantaneous to reduce the output of virtual synchronous machine to take two times of power frequency average values
The influence of pulsating quantity in power.
To realize that output reactive power indifference controls, virtual synchronous machine reactive power is instructed into QmWith instantaneous nothing at grid entry point
Average value Q of the work(power in half of power frequency periodeIt is controlled more afterwards through integral element, obtains virtual built-in potential amplitude E,
Transmission function is shown below：
In formula, K is idle-voltage integrating meter coefficient；QeIt can be obtained by following formula：
Virtual synchronous generator power outer shroud control structure figure is as shown in Figure 3.Virtual synchronous generator power outer shroud controls
Active-generator rotor angle ring and idle-Voltage loop can be divided into.Active-generator rotor angle ring is according to active power of output and the set-point of frequency and instead
Feedback amount generates virtual built-in potential generator rotor angle δ, and idle-Voltage loop is according to output reactive power and the set-point and feedback quantity of voltage magnitude
Generate virtual built-in potential amplitude E.According to generator rotor angle δ and amplitude E, virtual built-in potential instantaneous value e under dq0 coordinate systems can be obtaineddq0
=[ed, eq, e0]T.To ensure the d axles of virtual built-in potential and line voltage uCabcA phase components direction overlap and (ensure in virtual
Potential and line voltage are under same synchronous rotating frame), instantaneous value calculation formula is such as under dq0 coordinate systems for virtual built-in potential
Under：
3. virtual impedance controls.By the virtual built-in potential instantaneous value e under dq0 coordinate systemsdq0=[ed, eq, e0]TBy
IPark is converted under α β γ coordinate systems and obtainedIt is shown below：
By the capacitance voltage positive-sequence component u under abc coordinate systemsCabc +It is converted into by Clarke under α β γ coordinate systems and obtains uCαβγ
=[uCα, uCβ, uCγ]T, it is shown below：
Virtual impedance control structure figure is as shown in Figure 4.R in figurevAnd LvRespectively virtual interior resistance and virtual synchronous reactance,
Its physical significance is identical with synchronous motor stator resistance and synchronous inductance.The introducing of virtual impedance increases the defeated of inverter
Go out impedance, help to suppress more virtual synchronous machine parallel runnings formation circulation.By setting ωnLv＞ ＞ Rv, increase inverter
To the perception between power network, contribute to the uneoupled control of active power, reactive power.
4. the FBD harmonic detectings based on SGT wave filters, control structure figure are as shown in Figure 5.The step utilizes load current
iload, line voltage instantaneous value uCabcAnd its positive-sequence component uCabc +, by iloadIn harmonic wave, uneven with idle component iloadh=
[iloadha, iloadhb, iloadhc]TSeparate, and by iloadhα β γ coordinate systems, which are converted to, from abc coordinate systems obtains harmonic reference
Electric current iloadh *=[iloadhα *, iloadhβ *, iloadhγ *]T。
FBD harmonic detectings based on SGT wave filters, general FBD Harmonic Detecting Algorithms are improved.Traditional FBD algorithms
Middle low pass filter LPF generally uses second order Butterworth LPF, here using Sliding Goertzel algorithm (SGT) come
Realize.The complete mathematical modeling of SGT wave filters is：
In formula, N is the sampling number in a sampling period, and k is overtone order,Usually, each harmonic
LPF input elements all show the vibration of fundamental wave integral multiple in FBD algorithms, therefore in FBD algorithms, above formula takes k=0 to press down
The vibration that harmonic signal processed is brought.Above formula can be reduced to：
Fig. 6 gives the Bode figures of SGT wave filters after simplification.It can be seen that SGT filtering algorithms all have to each harmonic component
Extremely strong damping capacity, the low pass filter being highly suitable as in FBD Harmonic Detecting Algorithms, this method is also with response in addition
Speed is fast, and dynamic response time is easily adjusted, non-overshoot, is easy to the advantages such as DSP realizations.
5. based on the current inner loop control of multiple quasi- PR controllers, control structure figure is as shown in fig. 7, comprises following steps：
By fundamental power reference current iαβγ *With harmonic reference current iloadh *Addition obtains electric current loop reference value；To filter inductance electric current
iLabcClarke is carried out to convert to obtain iLαβγ=[iLα, iLβ, iLγ]T；By electric current loop reference value and the filtering by Clarke conversion
Inductive current lLαβγIt is compared, and then fundamental wave and 5,7,11,13 subharmonic currents is mended using multiple quasi- PR controllers
Repay, obtain voltage signal u to be modulated under α β γ coordinate systemsmod=[umodα, umodβ, umodγ]T.Quasi- PR controller transfer functions are：
In formula：I is fundamental wave and overtone order to be compensated, harmonic wave caused by power system nonlinear load be mainly 6n ±
1 subharmonic, mainly 5,7,11,13 subharmonic are compensated here；kpFor proportionality coefficient；kriFor resonance coefficient；ω0For resonance
Frequency, ω is taken herein0=ωn；ωcFor resonance portion bandwidth, it is contemplated that mains frequency fluctuation tends not to, more than 1Hz, take ωc
=2 π rad/s.
6.3D-SVPWM modulator approaches, utilize voltage signal u to be modulated under α β γ coordinate systemsmod, it is inverse to generate three-phase four-arm
Become device drive signal.3D-SVPWM modulator approaches are more ripe and fixed, and here is omitted.
The above described is only a preferred embodiment of the present invention, it is not the limit for making any other form to the present invention
System, and any modification made according to technical spirit of the invention or equivalent variations, still fall within present invention model claimed
Enclose.
Claims (9)
1. possessing the virtual synchronous generator control method of quality of power supply complex controll function, the control method is in the bridge of three-phase four
Carry out, comprise the following steps on arm inverter circuit architecture basics, it is characterised in that：
1) SOGI-PLL locks mutually decompose with three-phase voltage positive-sequence component；
1) virtual synchronous generator power outer shroud controls；
2) virtual impedance controls；
3) FBD harmonic currents, out-of-balance current and Detecting Reactive Current based on SGT wave filters；
4) current inner loop control based on multiple quasi- PR controllers；
5) 3D-SVPWM modulation generation four bridge legs current driving signal.
2. the virtual synchronous generator control method according to claim 1 for possessing quality of power supply complex controll function, its
It is characterised by：The step 1) is to line voltage, i.e. filter capacitor voltage uCabc=[uCa, uCb, uCc]TCarry out SOGI-PLL fortune
Calculate, obtain its phase theta, frequencies omegagWith amplitude Ug；Recycle uCabcInstantaneous value is with θ to uCabcPositive sequence decomposition is carried out, obtains uCabc's
Positive-sequence component uCabc +=[uCa +, uCb +, uCb +]T。
3. the virtual synchronous generator control method according to claim 1 for possessing quality of power supply complex controll function, its
It is characterised by：The step 2) includes two times of power frequency mean value calculations of virtual synchronous machine output instantaneous power, virtual synchronous machine has
Work(- generator rotor angle ring, virtual synchronous machine is idle-Voltage loop, the step generation virtual synchronous machine virtual built-in potential wink under dq0 coordinate systems
Duration edq0=[ed, eq, e0]T。
4. the virtual synchronous generator control method according to claim 1 for possessing quality of power supply complex controll function, its
It is characterised by：The step 3) utilizes virtual built-in potential instantaneous value e caused by step 1)dq0And electric network voltage phase θ, pass through
IPark conversion generates reference value e of the virtual built-in potential under α β γ coordinate systemsαβγ *=[eα *, eβ *, eγ *]T；To under abc coordinate systems
Capacitance voltage positive-sequence component uCabc +Carry out Clarke conversion, u under being converted to α β γ coordinate systemsCαβγ=[uCα, uCβ, uCγ
]T；eαβγ *With uCαβγControlled more afterwards by virtual impedance, obtain fundamental power reference current iαβγ *=[iα *, iβ *, iγ *]T。
5. the virtual synchronous generator control method according to claim 4 for possessing quality of power supply complex controll function, its
It is characterised by：The virtual impedance includes virtual resistance RvWith virtual reactance Lv, the virtual impedance physical significance and synchronous motor
Stator resistance is identical with synchronous inductance, and sets ωnLv＞ ＞ Rv。
6. the virtual synchronous generator control method according to claim 1 for possessing quality of power supply complex controll function, its
It is characterised by：The step 4) utilizes load current iload=[iloada, iloadb, iloadc]T, capacitance voltage positive-sequence component uCabc +
And phase theta, by the FBD harmonic currents based on SGT wave filters, out-of-balance current and Detecting Reactive Current method, by iloadIn
Non- fundamental active current component iloadh=[iloadha, iloadhb, iloadhc]TSeparate, and by iloadhChanged from abc coordinate systems
Harmonic reference current i is obtained for α β γ coordinate systemsloadh *=[iloadhα *, iloadhβ *, iloadhγ *]T。
7. the virtual synchronous generator control method according to claim 6 for possessing quality of power supply complex controll function, its
It is characterised by：Low pass filter in general FBD Harmonic Detecting Algorithms is used in FBD Harmonic detections based on SGT wave filters
Sliding Goertzel algorithm is realized.
8. the virtual synchronous generator control method according to claim 1 for possessing quality of power supply complex controll function, its
It is characterised by：The step 4) is by fundamental power reference current iαβγ *With harmonic reference current iloadh *Addition obtains electric current loop ginseng
Value is examined, by electric current loop reference value and the filter inductance electric current i by Clarke conversionLαβγ=[iLα, iLβ, iLγ]TIt is compared,
And then the fundamental wave of each component under α β γ coordinate systems is compensated with 5,7,11,13 subharmonic compositions using multiple quasi- PR controls,
Obtain voltage signal u to be modulated under α β γ coordinate systemsmod=[umodα, umodβ, umodγ]T。
9. the virtual synchronous generator control method according to claim 1 for possessing quality of power supply complex controll function, its
It is characterised by：The step 5) is by 3D-SVPWM modulator approaches, electricity to be modulated under the α β γ coordinate systems obtained using step 4)
Press signal umod, generate three-phase four-leg inverter drive signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710975824.4A CN107681662B (en) | 2017-10-19 | 2017-10-19 | Virtual synchronous generator control method with electric energy quality composite control function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710975824.4A CN107681662B (en) | 2017-10-19 | 2017-10-19 | Virtual synchronous generator control method with electric energy quality composite control function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107681662A true CN107681662A (en) | 2018-02-09 |
| CN107681662B CN107681662B (en) | 2020-10-27 |
Family
ID=61140965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710975824.4A Active CN107681662B (en) | 2017-10-19 | 2017-10-19 | Virtual synchronous generator control method with electric energy quality composite control function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107681662B (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242815A (en) * | 2018-03-30 | 2018-07-03 | 华北电力科学研究院有限责任公司 | Fall the wind turbine energy storage supplied for power of fan and coordinate frequency modulation system and method |
| CN108683344A (en) * | 2018-06-25 | 2018-10-19 | 哈尔滨理工大学 | A kind of control method of charging pile internal rectifier |
| CN108879765A (en) * | 2018-07-02 | 2018-11-23 | 太原理工大学 | Prevent the bidirectional power converter control method of micro-capacitance alternating current bus current distortion |
| CN109617073A (en) * | 2018-12-03 | 2019-04-12 | 国网江苏省电力有限公司电力科学研究院 | A kind of harmonic wave damped impedance design method applied to virtual synchronous machine |
| CN109812389A (en) * | 2019-01-31 | 2019-05-28 | 湖南工程学院 | A kind of wind-driven generator power quality and health status comprehensive monitoring and controlling method |
| CN110061511A (en) * | 2019-04-09 | 2019-07-26 | 北京交通大学 | A kind of improvement three-phase four-arm topology for realizing active power decoupling |
| CN110176787A (en) * | 2019-06-28 | 2019-08-27 | 广东志成冠军集团有限公司 | A kind of load virtual synchronous machine control device and method having both harmonic compensation |
| CN110233495A (en) * | 2019-05-06 | 2019-09-13 | 深圳中电长城能源有限公司 | The output control method and micro-grid system of virtual synchronous machine in a kind of micro-grid system |
| CN111371106A (en) * | 2020-04-07 | 2020-07-03 | 东南大学 | Phase-locked loop based three-phase four-leg inverter control system and control method |
| CN113285447A (en) * | 2021-05-21 | 2021-08-20 | 上海电力大学 | Wind black storage starting long line parameter change resonance analysis method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000341859A (en) * | 1999-05-28 | 2000-12-08 | Mitsubishi Electric Corp | Control apparatus and method for stabilizing power system |
| CN101192754A (en) * | 2007-12-11 | 2008-06-04 | 中国电力科学研究院 | A realization method for integrated load model of distribution network in power system |
-
2017
- 2017-10-19 CN CN201710975824.4A patent/CN107681662B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000341859A (en) * | 1999-05-28 | 2000-12-08 | Mitsubishi Electric Corp | Control apparatus and method for stabilizing power system |
| CN101192754A (en) * | 2007-12-11 | 2008-06-04 | 中国电力科学研究院 | A realization method for integrated load model of distribution network in power system |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242815A (en) * | 2018-03-30 | 2018-07-03 | 华北电力科学研究院有限责任公司 | Fall the wind turbine energy storage supplied for power of fan and coordinate frequency modulation system and method |
| CN108242815B (en) * | 2018-03-30 | 2024-03-08 | 华北电力科学研究院有限责任公司 | Fan energy storage coordination frequency modulation system and method for fan power drop complement |
| CN108683344A (en) * | 2018-06-25 | 2018-10-19 | 哈尔滨理工大学 | A kind of control method of charging pile internal rectifier |
| CN108879765A (en) * | 2018-07-02 | 2018-11-23 | 太原理工大学 | Prevent the bidirectional power converter control method of micro-capacitance alternating current bus current distortion |
| CN108879765B (en) * | 2018-07-02 | 2021-04-02 | 太原理工大学 | Bidirectional power converter control method for preventing micro-grid alternating current bus current distortion |
| CN109617073A (en) * | 2018-12-03 | 2019-04-12 | 国网江苏省电力有限公司电力科学研究院 | A kind of harmonic wave damped impedance design method applied to virtual synchronous machine |
| CN109812389A (en) * | 2019-01-31 | 2019-05-28 | 湖南工程学院 | A kind of wind-driven generator power quality and health status comprehensive monitoring and controlling method |
| CN110061511B (en) * | 2019-04-09 | 2021-01-12 | 北京交通大学 | Improved three-phase four-bridge-arm topology for realizing active power decoupling |
| CN110061511A (en) * | 2019-04-09 | 2019-07-26 | 北京交通大学 | A kind of improvement three-phase four-arm topology for realizing active power decoupling |
| CN110233495A (en) * | 2019-05-06 | 2019-09-13 | 深圳中电长城能源有限公司 | The output control method and micro-grid system of virtual synchronous machine in a kind of micro-grid system |
| CN110176787A (en) * | 2019-06-28 | 2019-08-27 | 广东志成冠军集团有限公司 | A kind of load virtual synchronous machine control device and method having both harmonic compensation |
| CN111371106A (en) * | 2020-04-07 | 2020-07-03 | 东南大学 | Phase-locked loop based three-phase four-leg inverter control system and control method |
| CN111371106B (en) * | 2020-04-07 | 2021-07-27 | 东南大学 | Phase-locked loop based three-phase four-leg inverter control system and control method |
| CN113285447A (en) * | 2021-05-21 | 2021-08-20 | 上海电力大学 | Wind black storage starting long line parameter change resonance analysis method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107681662B (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107681662A (en) | Possesses the virtual synchronous generator control method of quality of power supply complex controll function | |
| CN105914778B (en) | Microgrid inverter multi-loop control method based on virtual synchronous generator | |
| CN102074967B (en) | Method for controlling energy storage type wind power station with synchronization property | |
| WO2022077847A1 (en) | Virtual synchronous machine control method for hybrid microgrid mmc interconnected converter | |
| CN106849186B (en) | A kind of energy storage inverter master-slave control method based on virtual synchronous generator | |
| CN104218590B (en) | Unbalance voltage compensating control method based on virtual synchronous machine | |
| US9300142B2 (en) | Method for emulation of synchronous machine | |
| CN108808704B (en) | Control method and device of virtual synchronous generator | |
| CN110190633B (en) | Virtual synchronous machine control method under unbalanced network voltage condition | |
| CN107453363A (en) | Direct-drive permanent-magnetism blower fan harmonics restraint optimization method under line voltage unbalanced fault | |
| CN106356884A (en) | Method, device and system for controlling photovoltaic grid connection on basis of virtual synchronous machine | |
| CN111654062B (en) | Virtual synchronization control method and system of double-fed wind generating set | |
| Kerrouche et al. | Fractional-order sliding mode control for D-STATCOM connected wind farm based DFIG under voltage unbalanced | |
| CN109510248A (en) | It can inhibit the virtual synchronous inverter control method and storage medium of active oscillation | |
| CN107565599B (en) | Wind power grid-connected semi-physical simulation system based on VSG | |
| Singh et al. | Robust control strategies for SyRG-PV and wind-based islanded microgrid | |
| CN113890096B (en) | Converter sequence impedance modeling method in rectification inversion mode | |
| CN105790270A (en) | Method and device for suppressing subsynchronous resonance through doubly-fed fan rotor side converter | |
| CN110661273A (en) | Damping control method and system for inhibiting low-frequency oscillation and subsynchronous oscillation | |
| CN104242759A (en) | Double-fed wind power generation system based on vector power system stabilizer | |
| CN107579529A (en) | A kind of subsynchronous suppressing method of synchronous machine based on the optimization of grid-connection converter phaselocked loop | |
| CN109193760B (en) | Grid-connected photovoltaic inverter active disturbance rejection control method based on virtual synchronous machine | |
| CN112838589A (en) | Subsynchronous oscillation suppression method for voltage source type doubly-fed wind turbine generator under series compensation power grid | |
| Meng et al. | A sub-synchronous oscillation suppression strategy for doubly fed wind power generation system | |
| CN110994617A (en) | Current harmonic suppression method for virtual synchronous machine and control system of virtual synchronous machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |