CN207475199U - A kind of single-phase Research on Unified Power Quality Conditioner - Google Patents
A kind of single-phase Research on Unified Power Quality Conditioner Download PDFInfo
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- CN207475199U CN207475199U CN201721610369.XU CN201721610369U CN207475199U CN 207475199 U CN207475199 U CN 207475199U CN 201721610369 U CN201721610369 U CN 201721610369U CN 207475199 U CN207475199 U CN 207475199U
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- functional unit
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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
- Y02E40/40—Arrangements for reducing harmonics
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Abstract
The utility model is related to a kind of single-phase Research on Unified Power Quality Conditioner, it is characterised in that including functional unit and by-pass unit；Described functional unit one end is connect with power grid one end, and the other end connects simultaneously with the other end of power grid and load, and described by-pass unit one end connects power grid, one end connection load, and functional unit and by-pass unit simultaneously connect；The functional unit is made of parallel connection part, part in series and filter capacitor, and the by-pass unit is made of bidirectional thyristor and contactor, and the bidirectional thyristor and contactor splice connection are between power grid and load.A kind of single-phase Research on Unified Power Quality Conditioner of the utility model carries out network voltage the compensation improvement of high-low voltage, harmonic voltage, realizes and power in any case for load continuous.
Description
Technical field
The utility model is related to electric power facility fields, and in particular to a kind of single-phase Research on Unified Power Quality Conditioner.
Background technology
In the Rural Power Distribution Network of remote mountain areas, radius of electricity supply is big, and line footpath is small, leads to that there are serious low in user end
Voltage problem, it is difficult to meet normal demand of the user to electric power, it is big using power distribution framework transformation difficulty, and input cost
It is high.
Currently for circuit low-voltage problem, a kind of mode of use is the posterior segment series voltage regulator in circuit, due to
Line voltage distribution fluctuation range is big, at low voltage, there is certain voltage boosting effect, if but in underloading, making instead
Into high voltage, line load equipment is caused to seriously affect, and circuit seals in pressure regulator, solving pressure regulator secondary rear class line
While the low-voltage problem of road so that pressure regulator input voltage is more low, causes while " low-voltage " is solved new " low
Voltage " problem.With the fluctuation of load, lead to pressure regulator overload burning, and pressure regulator volume is big, weight is big, pacifies at the scene
There are larger inconvenience for dress construction.Another way is by the way of reactive-load compensation, since low-voltage circuit generates " low-voltage " separately
An outer reason is exactly that circuit reactive power consumption is big, and reactive power causes larger voltage landing in circuit, is produced in line end
Raw " low-voltage " problem, due to idle problem, can solve the problems, such as " low-voltage ", with electricity by installing reactive power compensator additional
The electric network reconstruction upgrading of net company, power matching network reactive-load compensation configuration standard, due to various reasons, the reactive power compensator of installation
It can not work normally, but it is also for due to low-voltage caused by idle, due to having to solve " low-voltage " by compensating reactive power
Work(, " low-voltage " regulation effect of circuit reason are seriously restricted.With economic development, electrical equipment becomes complicated various,
And most is all nonlinear load, causes serious harmonic problem, can solve the problems, such as current harmonics by SVG, still
Voltage harmonic can not effectively be solved.
Invention content
For the above situation, the purpose of this utility model is to provide a kind of single-phase Research on Unified Power Quality Conditioner, to power grid
Voltage carries out high-low voltage, the compensation of harmonic voltage is administered, and realizes and powers in any case for load continuous.
The single-phase Research on Unified Power Quality Conditioner of the utility model, including functional unit and by-pass unit；
Described functional unit one end is connect with power grid one end, and the other end connects simultaneously with the other end of power grid and load, institute
By-pass unit one end connection power grid is stated, one end connection load, functional unit and by-pass unit simultaneously connect；
The functional unit is made of parallel connection part, part in series and filter capacitor, and the parallel connection part is connect with power grid,
Parallel connection part includes sequentially connected several insulated gate bipolar transistors, and the part in series connects respectively with power grid and load
Connect, part in series include sequentially connected several insulated gate bipolar transistors, the filter capacitor be connected to parallel connection part and
Between part in series.
The by-pass unit is made of bidirectional thyristor and contactor, and the bidirectional thyristor exists with contactor splice connection
Between power grid and load.
Further, the functional unit is equipped with no less than one, and is connected between each functional unit by optical fiber
It connects.
Further, the functional unit uses three level, two bridge arm topological mode, and total losses are relatively low.
The single-phase Research on Unified Power Quality Conditioner of the utility model, the parallel connection part of functional unit take energy from power grid end,
Busbar voltage is maintained in certain range, part in series control is source-series into power grid into voltage, passes through the side of inversion control
Formula carries out network voltage the compensation of high-low voltage, harmonic voltage, and the filter capacitor between parallel connection part and part in series is eliminated
Harmonic wave in circuit reduces the reactive power in power supply circuit.In the case where functional unit breaks down or network voltage
In normal range (NR), proof load does not have a power failure, and by-pass unit is switched within 10ms, and bidirectional thyristor is switched within 10ms
Branch is simultaneously emitted by instruction to contactor, and after contactor is reliably attracted, thyristor branch is cut off from power grid, and current switching arrives
Contactor branch, the time of general hundreds of ms of run time of thyristor ensure the normal power supply of load.
Description of the drawings
The utility model is further described referring now to attached drawing, wherein：
Fig. 1 is the circuit diagram of the utility model；
Fig. 2 is the circuit diagram that the utility model is connected with multiple functional units.
Fig. 3 is the specific connection relation circuit diagram of functional unit in the utility model.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model part of the embodiment, instead of all the embodiments.Based on the embodiment in the utility model, sheet
Field those of ordinary skill all other embodiments obtained without making creative work, belong to this practicality
Novel protected range.
Embodiment 1
As shown in Figure 1, a kind of single-phase Research on Unified Power Quality Conditioner, including functional unit and by-pass unit；
Described functional unit one end is connect with power grid one end, and the other end connects simultaneously with the other end of power grid and load, institute
By-pass unit one end connection power grid is stated, one end connection load, functional unit and by-pass unit simultaneously connect；
The functional unit is made of parallel connection part, part in series and filter capacitor, and the parallel connection part is connect with power grid,
Parallel connection part includes sequentially connected several insulated gate bipolar transistors, and the part in series connects respectively with power grid and load
Connect, part in series include sequentially connected several insulated gate bipolar transistors, the filter capacitor be connected to parallel connection part and
Between part in series.
The by-pass unit is made of bidirectional thyristor and contactor, and the bidirectional thyristor exists with contactor splice connection
Between power grid and load.
Embodiment 2
As shown in Fig. 2, a kind of single-phase Research on Unified Power Quality Conditioner, including functional unit and by-pass unit；
Described functional unit one end is connect with power grid one end, and the other end connects simultaneously with the other end of power grid and load, institute
By-pass unit one end connection power grid is stated, one end connection load, functional unit and by-pass unit simultaneously connect；
The functional unit is made of parallel connection part, part in series and filter capacitor, and the parallel connection part is connect with power grid,
Parallel connection part includes sequentially connected several insulated gate bipolar transistors, and the part in series connects respectively with power grid and load
Connect, part in series include sequentially connected several insulated gate bipolar transistors, the filter capacitor be connected to parallel connection part and
Between part in series.
The by-pass unit is made of bidirectional thyristor and contactor, and the bidirectional thyristor exists with contactor splice connection
Between power grid and load.
There are two the functional unit is set, and it is attached between two functional units by optical fiber, one of function
Unit is host, another functional unit is slave.
Embodiment 3
As shown in Figure 1, Figure 3, a kind of single-phase Research on Unified Power Quality Conditioner, including functional unit and by-pass unit；
The by-pass unit is made of bidirectional thyristor and contactor, and the bidirectional thyristor exists with contactor splice connection
Between power grid and load.
The functional unit uses three level, two bridge arm connection mode, and parallel connection part includes insulated gate bipolar transistor
V1, V2, V3, V4, described insulated gate bipolar transistor V1, V2, V3, V4 are connect, insulated gate bipolar with three level power grids respectively
The emitter and collector of transistor npn npn V1, V2, V3, V4 are sequentially connected, part in series include insulated gate bipolar transistor V5,
V6, V7, V8, described insulated gate bipolar transistor V5, V6, V7, V8 are connect, insulated gate bipolar with three level power grids respectively
The emitter and collector of transistor V5, V6, V7, V8 are sequentially connected, filter capacitor C1, C2 concatenation, be connected to parallel connection part and
Between part in series, total losses are low in above-mentioned connection mode, and circuit obtains instruction current when working, in the form of pulse-width signal
Driving pulse is sent out to compensation current occuring circuit, driving power module generates reversely equivalent compensation electric current injection power grid, so as to
It realizes the dynamic to load reactive current and harmonic current, quickly, thoroughly administers, when functional unit occurs abnormal, circuit is cut
By-pass unit is shifted to, load is continued as and uninterruptible power supply is provided.
Above disclosed is only the preferred embodiment of the utility model, certainly cannot be new to limit this practicality with this
The interest field of type, therefore the equivalent variations made according to present utility model application the scope of the claims still belong to the utility model and are covered
Range.It should be appreciated that above description be intended to it is illustrative and not limiting.For example, above-described embodiment (and/or its aspect) can
With in combination with one another.In addition, enlightenment according to the present utility model, which can make many remodeling, is suitable for specific situation or material
Material is without departing from the scope of the utility model.By reading foregoing description, in scope and spirit of the claims it is many its
Its embodiment and remodeling it will be apparent to those skilled in the art that.
Claims (3)
1. a kind of single-phase Research on Unified Power Quality Conditioner, which is characterized in that including functional unit and by-pass unit；
Described functional unit one end is connect with power grid one end, and the other end connects simultaneously with the other end of power grid and load, the side
Road unit one end connects power grid, and one end connection load, functional unit and by-pass unit simultaneously connect；
The functional unit is made of parallel connection part, part in series and filter capacitor, and the parallel connection part is connect with power grid, in parallel
Part includes sequentially connected several insulated gate bipolar transistors, and the part in series connects respectively with power grid and load, string
Connection part includes sequentially connected several insulated gate bipolar transistors, and the filter capacitor is connected to parallel connection part and series connection portion
/；
The by-pass unit is made of bidirectional thyristor and contactor, and the bidirectional thyristor is with contactor splice connection in power grid
Between load.
2. a kind of single-phase Research on Unified Power Quality Conditioner according to claim 1, it is characterised in that the functional unit is set
There is no less than one, and be attached between each functional unit by optical fiber.
3. a kind of single-phase Research on Unified Power Quality Conditioner according to claim 1, it is characterised in that the functional unit is adopted
With three level, two bridge arm topological mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610369.XU CN207475199U (en) | 2017-11-28 | 2017-11-28 | A kind of single-phase Research on Unified Power Quality Conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721610369.XU CN207475199U (en) | 2017-11-28 | 2017-11-28 | A kind of single-phase Research on Unified Power Quality Conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207475199U true CN207475199U (en) | 2018-06-08 |
Family
ID=62258886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721610369.XU Active CN207475199U (en) | 2017-11-28 | 2017-11-28 | A kind of single-phase Research on Unified Power Quality Conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207475199U (en) |
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2017
- 2017-11-28 CN CN201721610369.XU patent/CN207475199U/en active Active
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