CN204633344U - A kind of Research on Unified Power Quality Conditioner with uninterrupted power supply function - Google Patents
A kind of Research on Unified Power Quality Conditioner with uninterrupted power supply function Download PDFInfo
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- CN204633344U CN204633344U CN201520293184.5U CN201520293184U CN204633344U CN 204633344 U CN204633344 U CN 204633344U CN 201520293184 U CN201520293184 U CN 201520293184U CN 204633344 U CN204633344 U CN 204633344U
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- 238000011160 research Methods 0.000 title claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims abstract description 32
- 238000004146 energy storage Methods 0.000 claims abstract description 26
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 25
- 239000000178 monomer Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 230000001052 transient effect Effects 0.000 description 3
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- 238000011161 development Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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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- 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 relates to a kind of Research on Unified Power Quality Conditioner with uninterrupted power supply function, belongs to electrical equipment technical field.This adjuster comprises: three super capacitor energy-storage modules, three single-phase invertor modules and bidirectional thyristor modules, super capacitor energy-storage module respectively with the DC side parallel of single-phase invertor module, single-phase invertor module ac output end is parallel between bidirectional thyristor module output and load respectively, single-phase invertor module ac output end is connected with load, bidirectional thyristor module input is connected system power supply respectively, and bidirectional thyristor module output is also simultaneously direct to be connected with load.The utility model enhances the scope solving power quality problem, reduces cost, and easily realizes Large Copacity output, have be exceedingly fast response speed, treat that engine efficiency is high, working stability, and structure is simple, has effectively saved product cost, be convenient to safeguard, be easy to operation, cost performance is higher.
Description
Technical field
The utility model relates to a kind of Research on Unified Power Quality Conditioner with uninterrupted power supply function, belongs to electrical equipment technical field.
Background technology
Along with the raising of China's modern industrial technology and living standards of the people, power quality problem highlights day by day, and power quality controlling technology has become the key solving power quality problem.Current power quality problem mainly contains system power source voltage transient fault, harmonic pollution, power factor is low, the problems such as three-phase imbalance, corresponding solution mainly contains dynamic electric voltage recovery device (DVR), active filter (APF), static reactive generator (SVG) etc., but because these power quality controlling functions of the equipments are single, integrated in order to reduce costs further with practical function, Research on Unified Power Quality Conditioner (hereinafter referred to as UPQC) is developed as comprehensive power quality controlling device and applies, current Research on Unified Power Quality Conditioner principle is as Fig. 1, series transformer primary side is connected between system power supply AC and load M, series transformer secondary side is connected to series inverter AC, series inverter DC side is connected with shunt chopper DC side, shunt chopper AC is parallel between series transformer and load M, its shunt chopper can realize the functions such as APF and SVG, series inverter can realize series connection DVR function.
But along with modern industry produces improving constantly electricity quality requirement, grid stability strengthens day by day, with the extensive employing of multi circuit transmission lines powering mode, cause proposing new demand in system power source voltage transient power quality problem, this demand comprises system power source voltage degree of depth decline in short-term and short interruptions, because current UPQC is based on series voltage compensation principle, its principle as shown in Figure 1, cause the voltage compensation requirement that it cannot meet the decline of the short time voltage degree of depth and interrupt, simultaneously at present UPQC does not possess two-way DC-DC unsteady flow function and causes being difficult to be applicable to the relevant energy storage devices such as super capacitor, and soft start function is not possessed for power type load tradition UPQC.
Although uninterrupted power supply can the guaranteed load stable operation when system power supply is interrupted, but uninterrupted power supply designs according to system power supply long disruption substantially, cost is higher, simultaneously uninterrupted power supply can only resolution system supply voltage stability problem, do not possess power quality controlling function, such as active power filtering, the functions such as reactive power compensation.
Along with the development of energy storage technology, super capacitor is as typical energy storage device owing to increasing useful life, and discharge capability is strengthened, and cost reduces and is widely used.Single-phase invertor has been very ripe power electronic equipment, and especially in high-power applications, and its reliability high cost is low.Along with the development of modern industry, also more and more higher to the requirement of power supply quality, the demand tackling the parallel voltage function possessing band uninterrupted power supply function is mutually more and more urgent.
Summary of the invention
The purpose of this utility model proposes a kind of Research on Unified Power Quality Conditioner with uninterrupted power supply function, change the structure of existing Research on Unified Power Quality Conditioner, change the shunt chopper in UPQC into single-phase semi-bridge or full-bridge inverter, to strengthen the scope solving power quality problem, achieve the integrated further of device simultaneously, effectively reduce installation cost.
The Research on Unified Power Quality Conditioner with uninterrupted power supply function that the utility model proposes, comprises the first super capacitor energy-storage module, the second super capacitor energy-storage module, the 3rd super capacitor energy-storage module, the first single-phase invertor module, the second single-phase invertor module, the 3rd single-phase invertor module and bidirectional thyristor module, the first described super capacitor energy-storage module, second super capacitor energy-storage module and the 3rd super capacitor energy-storage module respectively with the first single-phase invertor module, the DC side parallel of the second single-phase invertor module and the 3rd single-phase invertor module, first single-phase invertor module, the ac output end of the second single-phase invertor module and the 3rd single-phase invertor module is parallel to the output MA of described bidirectional thyristor module respectively, MB, between MC and load M, first single-phase invertor module, second single-phase invertor module is connected with the N line of load M with the ac output end N line of the 3rd single-phase invertor module, the input of described bidirectional thyristor module is the A phase of connected system power supply AC, B phase and C phase respectively, and the output of bidirectional thyristor module is simultaneously direct to be connected with load M, and bidirectional thyristor module is made up of three bidirectional thyristors.
Above-mentioned have in the Research on Unified Power Quality Conditioner of uninterrupted power supply function, and described single-phase invertor is made up of single-phase full-bridge inverter and LCL filter.Also can be made up of unidirectional half-bridge inverter and LCL filter.
Above-mentioned have in the Research on Unified Power Quality Conditioner of uninterrupted power supply function, and described single-phase invertor module can be made up of multiple single-phase invertor, and multiple single-phase invertor is connected in parallel, by implement device capacity extension in parallel.
Above-mentioned have in the Research on Unified Power Quality Conditioner of uninterrupted power supply function, and described super-capacitor module is first connected by multiple super capacitor monomer and composed in parallel afterwards.
The Research on Unified Power Quality Conditioner with uninterrupted power supply function that the utility model proposes, its advantage is:
1, the Research on Unified Power Quality Conditioner with uninterrupted power supply function of the present utility model, owing to employing super capacitor energy-storage technology, because this enhancing the scope that it solves power quality problem, integrated further, effectively reduce cost.
2, the Research on Unified Power Quality Conditioner with uninterrupted power supply function of the present utility model, by multiple single-phase invertor is in parallel in wherein single-phase invertor module, can expansion instrument capacity further, the Large Copacity of implement device configures.
3, the Research on Unified Power Quality Conditioner with uninterrupted power supply function of the present utility model, can cutoff thyristor technology fast owing to employing, not only have be exceedingly fast response speed, treat that engine efficiency is high, working stability, and structure is simple, effectively save product cost, be convenient to safeguard, be easy to operation, cost performance is higher.
4, the Research on Unified Power Quality Conditioner with uninterrupted power supply function of the present utility model, make up current UPQC insufficiency of function part, UPQC basis adds the system power source voltage degree of depth voltage compensating function that falls and interrupt in short-term, soft start function, possesses active power filtering simultaneously, reactive power compensation and three-phase imbalance compensate function, novel UPQC of the present utility model enhances the scope solving power quality problem.
Accompanying drawing explanation
Fig. 1 is the circuit theory diagrams of existing electric energy regulator.
Fig. 2 the utility model proposes a kind of circuit theory diagrams with the Research on Unified Power Quality Conditioner of uninterrupted power supply function.
Fig. 3 is the single-phase invertor circuit theory diagrams that the utility model uses, and wherein Fig. 3 (a) is single-phase full-bridge inverter, and Fig. 3 (b) is single phase half bridge inverter.
Fig. 4 is the single-phase invertor schematic diagram in parallel that the utility model uses.
Fig. 5 is the super capacitor group mould mode schematic diagram that the utility model uses.
Embodiment
The Research on Unified Power Quality Conditioner with uninterrupted power supply function that the utility model proposes, its structure as shown in Figure 1, comprises the first super capacitor energy-storage module, the second super capacitor energy-storage module, the 3rd super capacitor energy-storage module, the first single-phase invertor module, the second single-phase invertor module, the 3rd single-phase invertor module and bidirectional thyristor module, the first described super capacitor energy-storage module, second super capacitor energy-storage module and the 3rd super capacitor energy-storage module respectively with the first single-phase invertor module, the DC side parallel of the second single-phase invertor module and the 3rd single-phase invertor module, first single-phase invertor module, the ac output end of the second single-phase invertor module and the 3rd single-phase invertor module is parallel to the output MA of described bidirectional thyristor module respectively, MB, between MC and load M, first single-phase invertor module, second single-phase invertor module is connected with the N line of load M with the ac output end N line of the 3rd single-phase invertor module, the input of described bidirectional thyristor module is the A phase of connected system power supply AC, B phase and C phase respectively, and the output of bidirectional thyristor module is simultaneously direct to be connected with load M, and bidirectional thyristor module is made up of three bidirectional thyristors.
Above-mentioned have in the Research on Unified Power Quality Conditioner of uninterrupted power supply function, and described single-phase invertor is made up of, as shown in Fig. 3 (a) single-phase full-bridge inverter and LCL filter.Also can be made up of, as shown in Fig. 3 (b) unidirectional half-bridge inverter and LCL filter.
Single-phase invertor module in the above-mentioned Research on Unified Power Quality Conditioner with uninterrupted power supply function, can be made up of multiple single-phase invertor, multiple single-phase invertor is parallel with one another, by implement device capacity extension in parallel, as shown in Figure 4.
Super-capacitor module in the above-mentioned Research on Unified Power Quality Conditioner with uninterrupted power supply function, first can be connected by multiple super capacitor monomer and compose in parallel afterwards, as shown in Figure 5.
Below in conjunction with accompanying drawing, introduce the operation principle with the Research on Unified Power Quality Conditioner of uninterrupted power supply function that the utility model proposes and the course of work in detail:
When system power supply AC is normal, system power supply AC is powered to load M by bidirectional thyristor, motor soft-starting can be realized by the trigger angle controlling thyristor, single-phase invertor module work is at current source mode, can realize active power filtering function, no-power compensation function and three-phase imbalance compensate function, single-phase invertor module is charged to realize stored energy to super capacitor energy-storage module by controlled rectification pattern.When there is transient voltage fault in system power supply AC, single-phase invertor module work state is switched to voltage source mode by current source mode, effective shutoff of bidirectional thyristor is realized by back-pressure pulse method or load current transfer method, super capacitor energy-storage module by single-phase invertor module DC side for single-phase invertor module exchange output energy is provided, single-phase invertor module as voltage source to maintain the normal work of load M.When system power supply AC recover normal after, single-phase invertor module then exits voltage source mode of operation and starting current source mode of operation again, and bidirectional thyristor is switched on, to maintain the normal work of load.
Claims (5)
1. one kind has the Research on Unified Power Quality Conditioner of uninterrupted power supply function, it is characterized in that, this Research on Unified Power Quality Conditioner comprises the first super capacitor energy-storage module, the second super capacitor energy-storage module, the 3rd super capacitor energy-storage module, the first single-phase invertor module, the second single-phase invertor module, the 3rd single-phase invertor module and bidirectional thyristor module, the first described super capacitor energy-storage module, second super capacitor energy-storage module and the 3rd super capacitor energy-storage module respectively with the first single-phase invertor module, the DC side parallel of the second single-phase invertor module and the 3rd single-phase invertor module, first single-phase invertor module, the ac output end of the second single-phase invertor module and the 3rd single-phase invertor module is parallel to the output MA of described bidirectional thyristor module respectively, MB, between MC and load M, first single-phase invertor module, second single-phase invertor module is connected with the N line of load M with the ac output end N line of the 3rd single-phase invertor module, the input of described bidirectional thyristor module is the A phase of connected system power supply AC, B phase and C phase respectively, and the output of bidirectional thyristor module is simultaneously direct to be connected with load M, and bidirectional thyristor module is made up of three bidirectional thyristors.
2. Research on Unified Power Quality Conditioner as claimed in claim 1, it is characterized in that, wherein said single-phase invertor module is made up of single-phase full-bridge inverter and LCL filter.
3. have the Research on Unified Power Quality Conditioner of uninterrupted power supply function as claimed in claim 1, it is characterized in that, wherein said single-phase invertor module is made up of unidirectional half-bridge inverter and LCL filter.
4. have the Research on Unified Power Quality Conditioner of uninterrupted power supply function as claimed in claim 1, it is characterized in that, described single-phase invertor module is made up of multiple single-phase invertor, and multiple single-phase invertor is parallel with one another, by implement device capacity extension in parallel.
5. have the Research on Unified Power Quality Conditioner of uninterrupted power supply function as claimed in claim 1, it is characterized in that, wherein said super-capacitor module is first connected by multiple super capacitor monomer and is composed in parallel afterwards.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520293184.5U CN204633344U (en) | 2015-05-08 | 2015-05-08 | A kind of Research on Unified Power Quality Conditioner with uninterrupted power supply function |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934995A (en) * | 2015-05-08 | 2015-09-23 | 任磊 | UPQC with uninterrupted power source function |
| CN105207607A (en) * | 2015-09-21 | 2015-12-30 | 北京科诺伟业科技股份有限公司 | Three-phase ABC alternating-current tandem type photovoltaic array |
| CN112072771A (en) * | 2019-06-10 | 2020-12-11 | 维谛技术有限公司 | Uninterrupted power supply method, device, equipment and medium |
| CN113241764A (en) * | 2021-05-10 | 2021-08-10 | 天津元恒科技有限公司 | Power supply optimization device |
-
2015
- 2015-05-08 CN CN201520293184.5U patent/CN204633344U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104934995A (en) * | 2015-05-08 | 2015-09-23 | 任磊 | UPQC with uninterrupted power source function |
| CN105207607A (en) * | 2015-09-21 | 2015-12-30 | 北京科诺伟业科技股份有限公司 | Three-phase ABC alternating-current tandem type photovoltaic array |
| CN112072771A (en) * | 2019-06-10 | 2020-12-11 | 维谛技术有限公司 | Uninterrupted power supply method, device, equipment and medium |
| CN113241764A (en) * | 2021-05-10 | 2021-08-10 | 天津元恒科技有限公司 | Power supply optimization device |
| CN113241764B (en) * | 2021-05-10 | 2021-12-17 | 天津元恒科技有限公司 | Power supply optimization device |
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Effective date of registration: 20170606 Address after: 100000, No. 103 Chaoyang North Road, Beijing, 7, 709, Chaoyang District Patentee after: Universal stone (Beijing) Electric Co., Ltd. Address before: 100084 Beijing, Tsinghua University, west main building, district 103, Haidian District, China, 2 Patentee before: Ren Lei |
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| TR01 | Transfer of patent right |