CN207835072U - A kind of three-phase imbalance regulating device and system - Google Patents
A kind of three-phase imbalance regulating device and system Download PDFInfo
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- CN207835072U CN207835072U CN201820258092.7U CN201820258092U CN207835072U CN 207835072 U CN207835072 U CN 207835072U CN 201820258092 U CN201820258092 U CN 201820258092U CN 207835072 U CN207835072 U CN 207835072U
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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
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
The utility model provides a kind of three-phase imbalance regulating device and system, wherein the three-phase imbalance regulating device static reactive generator SVG units and at least one phase-change switch；SVG units and at least one phase-change switch access electricity grid network, and SVG units and at least one phase-change switch wirelessly connect；SVG units, the three road phase current signals for acquiring electricity grid network output in real time, output is to the three road phase current signals switching signal that is compared that treated at least one phase-change switch；At least one phase-change switch, the switching signal for receiving the transmission of SVG units, and switching is carried out according to switching signal, it is balanced adjusting with the three road phase currents to electricity grid network.By three-phase imbalance regulating device provided by the utility model and system, it can realize that practicability is more preferably to the balance adjustment of electricity grid network in conjunction with SVG units and phase-change switch.
Description
Technical field
The utility model is related to three-phase imbalance Treatment process fields, are adjusted in particular to a kind of three-phase imbalance
Apparatus and system.
Background technology
Three-phase current or voltage magnitude is inconsistent in the power system, and difference in magnitude is more than prescribed limit, referred to as three-phase
It is uneven.Low-voltage network refer to by the voltage network of distribution voltage device decompression power supply, due to power distribution network be three-phase with it is single-phase
User mixes with power grid, therefore voltage distribution net is passed through and powered frequently with three-phase four-wire circuit.When the single-phase load in three-phase not
When equal, distribution transformer output just will produce three-phase imbalance phenomenon.
Rural power grids supply the important component of service system as State Grid, are relationship rural economy social developments
Important infrastructure not only there is three-phase productive power in supply network, but also there are single-phase lives due to rural power grids supply line head
Electricity consumption, meanwhile, with the development of power electronic technique, various frequency converter and single-phase switch supply unit are widely used
In the rural power grids of rural area, three-phase imbalance problem is more on the rise in rural power grids, this directly results in rural power grids power quality evil
Change, seriously affects the living standard of resident.
As it can be seen that there is an urgent need for a kind of three-phase imbalance regulating devices suitable for rural power grids.
Utility model content
In view of this, the purpose of this utility model is to provide a kind of three-phase imbalance regulating device and systems, in conjunction with SVG
Unit and phase-change switch realize that practicability is more preferably to the balance adjustment of electricity grid network.
In a first aspect, the utility model provides a kind of three-phase imbalance regulating device, including：Static reactive generator
SVG units and at least one phase-change switch；The SVG units and at least one phase-change switch access electricity grid network, and
The SVG units and at least one phase-change switch wirelessly connect；
The SVG units, the three road phase current signals for acquiring the electricity grid network output in real time, export to described three
Switching signal that road phase current signal is compared that treated is at least one phase-change switch；
At least one phase-change switch, the switching signal sent for receiving the SVG units, and according to the switching
Signal carries out switching, and adjusting is balanced with the three road phase currents to the electricity grid network.
With reference to first aspect, the utility model provides the first possible embodiment of first aspect, wherein described
SVG units include：Phase current Acquisition Circuit, control circuit and output circuit, wherein
The phase current Acquisition Circuit, the three road phase current signals for acquiring the electricity grid network output in real time, output
To the control circuit；
The control circuit, for receiving three road phase current signal, output according to three road phase current signal into
The switching signal that row generates after relatively handling；
The output circuit, for exporting the switching signal at least one phase-change switch.
The possible embodiment of with reference to first aspect the first, the utility model provide first aspect second can
The embodiment of energy, wherein at least one phase-change switch is multiple phase-change switches；
The control circuit is compared arbitrary two road phase current signal for receiving three road phase current signal
Processing, obtains the larger phase current signal in the arbitrary two-way phase current signal, is matched with multiple phase-change switches, obtains
The one or more phase-change switches to match with the larger phase current signal are opened to the one or more commutations to match
Close output switching signal, with according to one or more phase-change switches for matching described in switching signal control switch to compared with
Small phase current signal is corresponding all the way.
Second of possible embodiment with reference to first aspect, the utility model provide first aspect the third can
The embodiment of energy, wherein
The control circuit is additionally operable to calculate arbitrary two-way phase current signal in tri- road phase current signals of switching control Hou
Between current differential, the current differential be less than predetermined current threshold when, according to the current differential to three tunnel phase
Electric current is balanced adjusting.
With reference to first aspect, the utility model provides the 4th kind of possible embodiment of first aspect, wherein described
At least one phase-change switch is multiple phase-change switches；Every three phase-change switches constitute a phase-change switch group, the phase-change switch
Group is multiple；
Three phase-change switches in the phase-change switch group are in parallel with the three-phase wire of the electricity grid network, for passing through
Three phase-change switches of the phase-change switch group adjust the balance of three road phase currents of the three-phase wire output respectively.
The 4th kind of possible embodiment with reference to first aspect, the utility model provide first aspect the 5th kind can
The embodiment of energy, wherein the number and the number of the first breaker of the phase-change switch group match；Wherein, described first
Breaker is arranged in the distribution box being connect with the electricity grid network.
With reference to first aspect, the utility model provides the 6th kind of possible embodiment of first aspect, wherein described
At least one phase-change switch is multiple phase-change switches；Any phase electric wire of the three-phase wire of the electricity grid network is parallel with multiple change
It mutually switchs, the balance of the phase current for adjusting any phase electric wire output by multiple phase-change switches.
With reference to first aspect, the utility model provides the 7th kind of possible embodiment of first aspect, wherein also wraps
Include SVG plates；
The SVG units are connect by the SVG plates at least one phase-change switch.
With reference to first aspect, the utility model provides the 8th kind of possible embodiment of first aspect, wherein also wraps
It includes：Second breaker and Surge Protector；The three-phase wire of the electricity grid network is both provided with second breaker and described
Surge Protector.
Second aspect, the utility model additionally provide a kind of three-phase imbalance regulating system, including first aspect, first party
In the possible embodiment of the first of face to the 8th kind of possible embodiment described in any possible embodiment three
Mutually uneven regulating device further includes：Electricity grid network；
The electricity grid network, for exporting three road phase current signals；
The three-phase imbalance regulating device, the three road phase current signals for acquiring the electricity grid network output in real time,
According to being compared that treated to three road phase current signals, switching signal carries out switching, with the three tunnel phases to the electricity grid network
Electric current is balanced adjusting.
Three-phase imbalance regulating device provided by the utility model, including：Static reactive generator SVG units and at least one
A phase-change switch；SVG units and at least one phase-change switch access electricity grid network, and SVG units and at least one commutation are opened
Pass wirelessly connects；SVG units, the three road phase current signals for acquiring electricity grid network output in real time are exported to three
Switching signal that road phase current signal is compared that treated is at least one phase-change switch；At least one phase-change switch, is used for
The switching signal that SVG units are sent is received, and switching is carried out according to switching signal, is carried out with the three road phase currents to electricity grid network
Balance adjustment.By three-phase imbalance regulating device provided by the utility model and system, can be opened in conjunction with SVG units and commutation
It closes and realizes that practicability is more preferably to the balance adjustment of electricity grid network.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
It, below will be to required use in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 shows a kind of structural schematic diagram for three-phase imbalance regulating device that the utility model embodiment is provided；
The knot of SVG units in a kind of three-phase imbalance regulating device provided Fig. 2 shows the utility model embodiment
Structure schematic diagram；
Fig. 3 shows that a kind of application structure for three-phase imbalance regulating device that the utility model embodiment is provided is shown
Meaning；
Fig. 4-Fig. 7 be in a kind of three-phase imbalance regulating device for providing of the utility model embodiment each function element it
Between wiring diagram；
Fig. 8-Figure 11 is the experimental result put into before and after the three-phase imbalance regulating device that the utility model embodiment provides
Figure.
Specific implementation mode
It is new below in conjunction with this practicality to keep the purpose, technical scheme and advantage of the utility model embodiment clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment be only the utility model a part of the embodiment, instead of all the embodiments.Usually here described in attached drawing
It can be arranged and design with a variety of different configurations with the component of the utility model embodiment shown.Therefore, below to
The detailed description of the embodiments of the present invention provided in attached drawing is not intended to limit the model of claimed the utility model
It encloses, but is merely representative of the selected embodiment of the utility model.Based on the embodiments of the present invention, those skilled in the art exist
The every other embodiment obtained under the premise of not making creative work, shall fall within the protection scope of the present invention.
In view of there is an urgent need for a kind of three-phase imbalance regulation schemes to solve the problems, such as rural power grids three-phase imbalance for the relevant technologies.Have
In consideration of it, the utility model embodiment provides a kind of three-phase imbalance regulating device and system, opened in conjunction with SVG units and commutation
It closes and realizes that practicability is more preferably to the balance adjustment of electricity grid network.
Referring to Fig. 1, the utility model embodiment provides a kind of three-phase imbalance regulating device, which specifically includes：
Static reactive generator SVG units 11 and at least one phase-change switch 22；SVG units 11 and at least one phase-change switch 22 connect
Enter electricity grid network 33, and SVG units 11 and at least one phase-change switch 22 wirelessly connect；
SVG units 11, the three road phase current signals exported for acquiring electricity grid network 33 in real time, export to three road phase currents
Switching signal that signal is compared that treated is at least one phase-change switch 22；
At least one phase-change switch 22, the switching signal for receiving the transmission of SVG units 11, and carried out according to switching signal
Switching is balanced adjusting with the three road phase currents to electricity grid network 33.
The three-phase imbalance regulating device that the utility model embodiment provides, including：Static reactive generator SVG units 11
With at least one phase-change switch 22；SVG units 11 and at least one phase-change switch 22 access electricity grid network 33, and SVG units
11 and at least one phase-change switch 22 wirelessly connect；SVG units 11, for acquiring what electricity grid network 33 exported in real time
Three road phase current signals, output is to the three road phase current signals switching signal that is compared that treated at least one phase-change switch
22；At least one phase-change switch 22, the switching signal for receiving the transmission of SVG units 11, and switching is carried out according to switching signal,
It is balanced adjusting with the three road phase currents to electricity grid network 33.It is adjusted and is filled by three-phase imbalance provided by the utility model
It sets, can realize that practicability is more preferably to the balance adjustment of electricity grid network 33 in conjunction with SVG units 11 and phase-change switch 22.
Specifically, the utility model embodiment is by SVG (Static Var Generator, static reactive generator) unit
It is formed with phase-change switch 22, three road phase current signals of the monitoring distribution low-voltage outlet in real time of SVG units 11, if centainly monitoring
Distribution low-voltage side three-phase load unbalance degree transfinites in period, and SVG units 11 read distribution low-voltage outlet and all phase-change switches
The electric current of 22 each load branch circuits, phase sequence real time data, optimize calculating, send out optimal commutation switching signal, each phase-change switch
22 execute commutation operation according to regulation commutation flow, realize the adjustment of customer charge phase sequence, power distribution station three-phase load equilibrium assignment.
For the ease of being balanced adjusting to three road phase currents, referring to Fig. 2, the SVG units in the utility model embodiment
11 include：Phase current Acquisition Circuit 111, control circuit 112 and output circuit 113, wherein
Phase current Acquisition Circuit 111, for the real-time three road phase current signals for acquiring electricity grid network 33 and exporting, output to control
Circuit 112 processed；
Control circuit 112, for receiving three road phase current signals, output is compared processing according to three road phase current signals
The switching signal generated afterwards；
Output circuit 113, for exporting switching signal at least one phase-change switch 22.
Specifically, the utility model embodiment is realized by the phase current Acquisition Circuit 111 in SVG units 11 to three tunnel phases
The acquisition of current signal is compared processing, with according to the throwing of generation by control circuit 112 to above-mentioned three road phase current signal
Cut the switching that signal controls above-mentioned phase-change switch 22.
SVG units 11 in the three-phase imbalance regulating device that the utility model embodiment provides can not only control commutation
The three road phase current of switching pair of switch 22 is balanced adjusting, can also be balanced using 1111 built-in controller of SVG units
It adjusts.That is, the binding pattern that the utility model embodiment is finely tuned by 22 coarse adjustment of phase-change switch, SVG units 11, reaches uneven
The technique effect of weighing apparatus linear compensation.Next further the coarse adjustment that the utility model embodiment provides is carried out specifically with fine tuning
It is bright.
In the utility model embodiment, at least one phase-change switch 22 is multiple phase-change switches 22；Control circuit 112 is used
In receiving three road phase current signals, processing is compared to arbitrary two road phase current signal, obtains arbitrary two-way phase current signal
In larger phase current signal, matched with multiple phase-change switches 22, obtain one to match with larger phase current signal
Or multiple phase-change switches 22, switching signal is exported to the one or more phase-change switches 22 to match, with according to switching signal control
Make one or more phase-change switches 22 for matching switch to it is corresponding with smaller phase current signal all the way.That is, by upper
The comparison processing between the phase current signal of arbitrary two road is stated, electric current missing and excessive situation per road phase current is calculated, generates throwing
Signal is cut, the switching signal that SVG units 11 are sent out passes to phase-change switch 22 through wireless communication, and then plays control
Certain road phase-change switch 22 is put into and the function of excision.It can make larger phase current signal by the combination of multiple phase-change switches 22
It is corresponding corresponding to smaller phase current signal to be all the way balanced adjusting all the way so that arbitrary two-way in three road phase current signals
Difference between phase current is big possible close to predetermined current threshold to the greatest extent, and when current differential is less than predetermined current threshold, then
It needs to be balanced adjusting according to three road phase current of current differential pair using SVG units 11.
In conjunction with Fig. 1 and Fig. 3, at least one of the utility model embodiment phase-change switch 22 is multiple phase-change switches 22；
Every three phase-change switches 22 constitute 22 groups of a phase-change switch, and 22 groups of phase-change switch is multiple；
Three phase-change switches 22 in 22 groups of phase-change switch are in parallel with the three-phase wire of electricity grid network 33, changed for passing through
Mutually three phase-change switches 22 of 22 groups of switch adjust the balance of three road phase currents of three-phase wire output respectively.
Wherein, the number and the number of the first breaker of 22 groups of above-mentioned phase-change switch match；Wherein, the first breaker is set
It sets in the distribution box being connect with electricity grid network 33.
In addition, at least one of the utility model embodiment phase-change switch 22 is multiple phase-change switches 22；Electricity grid network
Any phase electric wire of 33 three-phase wire is parallel with multiple phase-change switches 22, for adjusting any phase by multiple phase-change switches 22
The balance of the phase current of electric wire output, to meet different regulatory demands.
The three-phase imbalance regulating device that the utility model embodiment provides further includes SVG plates, and SVG units 11 pass through SVG
Plate is connect at least one phase-change switch 22.
In addition, above-mentioned three-phase imbalance regulating device further includes the second breaker and Surge Protector；Electricity grid network 33
Three-phase wire is both provided with the second breaker and Surge Protector.
The three-phase imbalance regulating device that the utility model embodiment provides, including：Static reactive generator SVG units 11
With at least one phase-change switch 22；SVG units 11 and at least one phase-change switch 22 access electricity grid network 33, and SVG units
11 and at least one phase-change switch 22 wirelessly connect；SVG units 11, for acquiring what electricity grid network 33 exported in real time
Three road phase current signals, output is to the three road phase current signals switching signal that is compared that treated at least one phase-change switch
22；At least one phase-change switch 22, the switching signal for receiving the transmission of SVG units 11, and switching is carried out according to switching signal,
It is balanced adjusting with the three road phase currents to electricity grid network 33.It is adjusted and is filled by three-phase imbalance provided by the utility model
It sets, can realize that practicability is more preferably to the balance adjustment of electricity grid network 33 in conjunction with SVG units 11 and phase-change switch 22.
Based on the three-phase imbalance regulating device that the utility model embodiment provides, the utility model embodiment additionally provides
A kind of three-phase imbalance regulating system, the system further include electricity grid network 33；
Electricity grid network 33, for exporting three road phase current signals；
Three-phase imbalance regulating device, the three road phase current signals exported for acquiring electricity grid network 33 in real time, according to right
Three road phase current signals are compared that treated, and switching signal carries out switching, is carried out with the three road phase currents to electricity grid network 33
Balance adjustment.
The three-phase imbalance regulating system that the utility model embodiment provides, can combine SVG units 11 and phase-change switch
22 realize that practicability is more preferably to the balance adjustment of electricity grid network 33.
For the ease of further understanding for the three-phase imbalance regulating device that provides utility model embodiment and system, connect
Get off to illustrate in conjunction with a specific example.
In conjunction with Fig. 3, first to the effector involved in the three-phase imbalance regulating device of the utility model embodiment offer
Part is briefly described.
QF：Breaker；
SPD1：Surge Protector；
U：SVG units；
SVG-Bord：SVG plates；
Phase-change switch 1-12 on circuit.
Specific wiring is shown in shown in Fig. 4~Fig. 7.
Wherein, Fig. 4 is current sample wiring diagram；Fig. 5 is SVG units and the power supply of SVG-Bord plates and communications line；Fig. 6
Wiring diagram is controlled for SVG-Bord plates and phase-change switch；Fig. 7 is SVG units to external terminal schematic diagram.
The configuration of above-mentioned each function element is as shown in the table：
Fig. 8 is that the three-phase imbalance regulating device that the utility model embodiment provides puts into foreground partition (namely electricity grid network)
Power quality situation map, it can be seen that compensating first three phase current has imbalance from Fig. 8 (b), A phase currents are 267A, B phase electricity
Stream is 332A, and C phase currents are 195A, N phase currents 103A；It can be seen that compensating first three phase voltage has injustice from Fig. 8 (a)
Weighing apparatus, A phase voltages 230V, B phase voltage 238V, C phase voltage are 245V, and voltage distortion rate is up to 6%, exceed the 5% of national standard.
Fig. 9 is that SVG units exit, and system only puts into the taiwan area power quality situation map of phase-change switch, can from Fig. 9 (b)
To find out, three-phase current unbalance degree reduces after phase-change switch input, but there are still prodigious electric currents for N lines, to system stability
There are security risks；A phase currents are 219A, and B phase currents are 220A, and C phase currents are 240A, N phase currents 74A；From Fig. 9 (a)
It can be seen that three-phase voltage has imbalance after phase-change switch input, A phase voltages 238V, B phase voltage 236V, C phase voltage is
233V, voltage distortion rate are up to 7.5%, exceed the 5% of national standard.
Figure 10 is the corresponding power quality situation map of device after SVG units and phase-change switch whole input, from Figure 10 (b)
In it can be seen that the three-phase current after compensation reaches balance, A phase currents are 273A, and B phase currents are 269A, and C phase currents are 268A,
N line currents are reduced to 34A, three-phase balance；After SVG inputs, voltage distortion rate reduces, it can be seen that mending from Figure 10 (a)
Three-phase voltage after repaying reaches balance, and A phase voltages are 235V, and B phase voltages are 237V, and C phase voltages are 235V, and voltage distortion rate is
3.3%.
Figure 11 is the correction data analysis before and after the three-phase imbalance regulating device input that the utility model embodiment provides
Figure.
To sum up, the three-phase imbalance regulating device and system that the utility model embodiment provides can also bring following technology
Effect：
1.SVG directly controls phase-change switch, and by phase-change switch coarse adjustment, the pattern of SVG fine tunings reaches uneven
Linear compensation effect；
The line loss of power consumption and phase-change switch that 2.SVG is generated is cancelled out each other, and solves the humiliation for increasing line loss using SVG
Disease；
3. the imbalance on circuit can be solved and meet the requirement to three-phase imbalance performance assessment criteria in real time；
4. have the function of reactive-load compensation and harmonic wave control, it is comprehensive to solve taiwan area distribution transformer electric energy quality problems；
5. alleviate tail end line low-voltage problem, it is comprehensive to solve taiwan area distribution transformer electric energy quality problems.
In embodiment provided by the utility model, it should be understood that disclosed device and system, it can be by other
Mode realize.The apparatus embodiments described above are merely exemplary, for example, the division of the unit, only one
Kind of division of logic function, formula that in actual implementation, there may be another division manner, in another example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored or not executed.Another point, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be the INDIRECT COUPLING or logical of device or unit by some communication interfaces
Letter connection can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separated, aobvious as unit
The component shown may or may not be physical unit, you can be located at a place, or may be distributed over multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in embodiment provided by the utility model can be integrated in a processing unit,
Can also be that each unit physically exists alone, it can also be during two or more units be integrated in one unit.
It, can be with if the function is realized in the form of SFU software functional unit and when sold or used as an independent product
It is stored in a computer read/write memory medium.Based on this understanding, the technical solution of the utility model substantially or
Person says that the part of the part that contributes to existing technology or the technical solution can be expressed in the form of software products,
The computer software product is stored in a storage medium, including some instructions are used so that computer equipment (can be with
Personal computer, server or the network equipment etc.) execute each embodiment the method for the utility model whole or portion
Step by step.And storage medium above-mentioned includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), with
Machine accesses various Jie that can store program code such as memory (RAM, Random Access Memory), magnetic disc or CD
Matter.
It should be noted that：Similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent attached drawing in a attached drawing, in addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.
Finally it should be noted that：Embodiment described above, only specific embodiment of the present utility model, to illustrate this
The technical solution of utility model, rather than its limitations, the scope of protection of the utility model is not limited thereto, although with reference to aforementioned
The utility model is described in detail in embodiment, it will be understood by those of ordinary skill in the art that：It is any to be familiar with this skill
The technical staff in art field within the technical scope disclosed by the utility model, still can be to the skill recorded in previous embodiment
Art scheme modify or can readily occur in variation or equivalent replacement of some of the technical features；And these modifications,
Variation is replaced, the spirit and model of the utility model embodiment technical solution that it does not separate the essence of the corresponding technical solution
It encloses.It should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model is answered described is wanted with right
Subject to the protection domain asked.
Claims (10)
1. a kind of three-phase imbalance regulating device, which is characterized in that including：Static reactive generator SVG units and at least one
Phase-change switch；The SVG units and at least one phase-change switch access electricity grid network, and SVG units and described
At least one phase-change switch wirelessly connects；
The SVG units, the three road phase current signals for acquiring the electricity grid network output in real time, export to three tunnel phase
Switching signal that current signal is compared that treated is at least one phase-change switch；
At least one phase-change switch, the switching signal sent for receiving the SVG units, and according to the switching signal
Switching is carried out, adjusting is balanced with the three road phase currents to the electricity grid network.
2. three-phase imbalance regulating device according to claim 1, which is characterized in that the SVG units include：Phase current
Acquisition Circuit, control circuit and output circuit, wherein
The phase current Acquisition Circuit, the three road phase current signals for acquiring the electricity grid network output in real time, output to institute
State control circuit；
The control circuit, for receiving three road phase current signal, output is compared according to three road phase current signal
Compared with the switching signal generated after processing；
The output circuit, for exporting the switching signal at least one phase-change switch.
3. three-phase imbalance regulating device according to claim 2, which is characterized in that at least one phase-change switch is
Multiple phase-change switches；
The control circuit is compared processing for receiving three road phase current signal to arbitrary two road phase current signal,
The larger phase current signal in the arbitrary two-way phase current signal is obtained, is matched with multiple phase-change switches, acquisition and institute
One or more phase-change switches that larger phase current signal matches are stated, it is defeated to the one or more phase-change switches to match
Go out switching signal, to be switched to and smaller phase according to the one or more phase-change switches to match described in switching signal control
Current signal is corresponding all the way.
4. three-phase imbalance regulating device according to claim 3, which is characterized in that
The control circuit is additionally operable to calculate in tri- road phase current signals of switching control Hou between arbitrary two-way phase current signal
Current differential, the current differential be less than predetermined current threshold when, according to the current differential to three road phase current
It is balanced adjusting.
5. three-phase imbalance regulating device according to claim 1, which is characterized in that at least one phase-change switch is
Multiple phase-change switches；Every three phase-change switches constitute a phase-change switch group, and the phase-change switch group is multiple；
Three phase-change switches in the phase-change switch group are in parallel with the three-phase wire of the electricity grid network, for by described
Three phase-change switches of phase-change switch group adjust the balance of three road phase currents of the three-phase wire output respectively.
6. three-phase imbalance regulating device according to claim 5, which is characterized in that the number of the phase-change switch group with
The number of first breaker matches；Wherein, first breaker is arranged in the distribution box being connect with the electricity grid network.
7. three-phase imbalance regulating device according to claim 1, which is characterized in that at least one phase-change switch is
Multiple phase-change switches；Any phase electric wire of the three-phase wire of the electricity grid network is parallel with multiple phase-change switches, for by more
A phase-change switch adjusts the balance of the phase current of any phase electric wire output.
8. three-phase imbalance regulating device according to claim 1, which is characterized in that further include SVG plates；
The SVG units are connect by the SVG plates at least one phase-change switch.
9. three-phase imbalance regulating device according to claim 1, which is characterized in that further include：Second breaker and wave
Surge protector；The three-phase wire of the electricity grid network is both provided with second breaker and the Surge Protector.
10. the three-phase imbalance described in any one of a kind of three-phase imbalance regulating system, including claim 1 to 9 adjusts dress
It sets, which is characterized in that further include：Electricity grid network；
The electricity grid network, for exporting three road phase current signals；
The three-phase imbalance regulating device, the three road phase current signals for acquiring the electricity grid network output in real time, according to
Being compared that treated to three road phase current signals, switching signal carries out switching, with the three road phase currents to the electricity grid network
It is balanced adjusting.
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