CN204089192U - Based on the Research on Unified Power Quality Conditioner of thyristor and energy storage - Google Patents
Based on the Research on Unified Power Quality Conditioner of thyristor and energy storage Download PDFInfo
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- CN204089192U CN204089192U CN201420528984.6U CN201420528984U CN204089192U CN 204089192 U CN204089192 U CN 204089192U CN 201420528984 U CN201420528984 U CN 201420528984U CN 204089192 U CN204089192 U CN 204089192U
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- 238000004146 energy storage Methods 0.000 title claims abstract description 32
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 28
- 239000003990 capacitor Substances 0.000 claims abstract description 17
- 238000002955 isolation Methods 0.000 claims description 6
- 239000000178 monomer Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 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 the Research on Unified Power Quality Conditioner based on thyristor and energy storage, belongs to electrical equipment technical field.This adjuster comprises: super capacitor energy-storage module, two-way DC-DC converter module, inverter module, bidirectional thyristor module.Wherein, super capacitor energy-storage module is in parallel with the low-pressure side of two-way DC-DC converter module, the high-pressure side of two-way DC-DC converter and inverter module DC side parallel, inverter module ac output end is parallel between bidirectional thyristor module output and load, bidirectional thyristor input connected system power supply.The utility model enhances the scope solving power quality problem, simultaneously integrated further, effectively reduce cost, should based on the novel UPQC of thyristor and energy storage not only 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 belongs to electrical equipment technical field, in particular to a kind of novel UPQC (Research on Unified Power Quality Conditioner) based on thyristor and energy storage, load side voltage compensating function when it has a system power supply transient voltage fault, active power filtering function, no-power compensation function, three-phase imbalance compensate function, soft start function.
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 (UPQC) is developed as comprehensive power quality controlling device and applies, current Research on Unified Power Quality Conditioner (UPQC) composition, 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, especially in system power source voltage transient power quality problem, new demand is proposed, this demand comprises system power source voltage degree of depth decline in short-term and short interruptions, because current UPQC causes its voltage compensation requirement that cannot meet the decline of the short time voltage degree of depth and interrupt based on series voltage compensation principle, 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 does not possess soft start function for power type load tradition UPQC.
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.And two-way DC-DC converter and three-phase bridge inverter have been very ripe power electronic equipments, 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 energy storage is mutually more and more urgent.
Utility model content
The purpose of this utility model makes up current UPQC insufficiency of function part, a kind of Research on Unified Power Quality Conditioner (UPQC) based on thyristor and energy storage is proposed, bidirectional thyristor module should be added based on the UPQC of thyristor and energy storage, super capacitor energy-storage module and two-way DC-DC converter module, eliminate the series inverter in current UPQC, on UPQC basis, so just add 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, achieve integrated further simultaneously, effectively reduce cost.
A kind of Research on Unified Power Quality Conditioner (UPQC) based on thyristor and energy storage that the utility model proposes, it is characterized in that, this adjuster comprises super capacitor energy-storage module, two-way DC-DC converter module, inverter module, bidirectional thyristor module; Wherein, super capacitor energy-storage module is in parallel with the low-pressure side of two-way DC-DC converter module, the high-pressure side of two-way DC-DC converter and inverter module DC side parallel, inverter module ac output end is parallel between bidirectional thyristor module output and load, bidirectional thyristor input connected system power supply, bidirectional thyristor module output is also simultaneously direct to be connected with load.
Inverter module can be made up of conventional three-phase inverter and LC filter.
Bidirectional thyristor module can by the bidirectional thyristor of routine and drive and control circuit formed; This drive circuit can adopt the device of Magnetic isolation or light isolation drive scheme usually, and control circuit can use input and output pattern, realizes turn on thyristors and controls with shutoff.
When system power supply is three-phase four-wire system, the utility model can increase isolating transformer module on the basis of above-mentioned composition structure, the input of this isolating transformer is connected in parallel on the AC of described inverter module, and output is parallel between bidirectional thyristor module output and load M.
Described isolating transformer module can adopt three-phase and four-line isolating transformer, or uses three-phase four-line dc-to-ac converter.
The utility model advantage is:
The novel UPQC based on thyristor and energy storage that the utility model proposes enhances the scope that it solves power quality problem, simultaneously integrated further, effectively reduces cost.
Novel UPQC based on thyristor and energy storage of the present utility model not only have be exceedingly fast response speed, treat that engine efficiency is high, working stability, and structure is simple, has effectively saved product cost, is convenient to safeguard, be easy to operation, cost performance is higher.
Accompanying drawing explanation
Fig. 1 is the built-up circuit figure of current UPQC.
Fig. 2 is the built-up circuit figure of the novel UPQC based on thyristor and energy storage that the utility model proposes.
Fig. 3 is the built-up circuit figure of the novel UPQC of three-phase and four-line based on thyristor and energy storage that the utility model proposes.
Embodiment
Below in conjunction with accompanying drawing, introduce the utility model in detail based on the UPQC composition of thyristor and energy storage, operation principle and the course of work:
With reference to shown in Fig. 2, the UPQC circuit system schematic diagram based on thyristor and energy storage that the utility model proposes.The novel UPQC based on thyristor and energy storage for solving power quality problem that the utility model proposes, comprises super capacitor energy-storage module, two-way DC-DC converter module, inverter module, bidirectional thyristor module; Wherein, super capacitor energy-storage module is in parallel with the low-pressure side of two-way DC-DC converter module, the high-pressure side of two-way DC-DC converter and inverter module DC side parallel, inverter module ac output end is parallel between bidirectional thyristor module output and load M, bidirectional thyristor input connected system power supply AC, bidirectional thyristor module output is also simultaneously direct to be connected with load.
The embodiment of each parts of the present utility model is described as follows:
Inverter module can be made up of conventional three-phase inverter and LC filter.
Bidirectional thyristor module can by the bidirectional thyristor of routine and drive and control circuit form, this drive circuit can adopt the device of Magnetic isolation or light isolation drive scheme usually, and control circuit can use input and output pattern, realize turn on thyristors with shutoff control.
Super capacitor energy-storage module can be combined by the connection in series-parallel of super capacitor monomer.
Two-way DC-DC converter module can adopt conventional voltage raising and reducing circuit (Boost+Buck) or the DC-DC converter based on high frequency transformer.。
The utility model is when being used for system power supply and being three-phase four-wire system, isolating transformer module can be increased on the basis of above-mentioned composition structure, its structure as shown in Figure 3, the input of this isolating transformer is connected in parallel on the AC of described inverter module, and output is parallel between bidirectional thyristor module output and load M.
This isolating transformer can adopt three-phase and four-line isolating transformer, or three-phase four-line dc-to-ac converter.
Operation principle of the present utility model is: when system power supply is normal, system power supply is powered to load M by bidirectional thyristor, motor soft-starting can be realized by the trigger angle controlling thyristor, inversion module can realize active power filtering function, no-power compensation function and three-phase imbalance compensate function, super capacitor energy-storage module is charged by two-way DC-DC converter module to realize stored energy, when there is transient voltage fault in system power supply AC, inversion module is operated in voltage source mode, realize bidirectional thyristor by back-pressure pulse method or load current transfer method effectively to turn off, super capacitor energy-storage module is discharged to inversion module by two-way DC-DC converter module, inversion module as voltage source to maintain the normal work of load M, when system power supply AC recovers normally, inverter module then exits voltage source inverter mode of operation, bidirectional thyristor is switched on the normal work maintaining load.
Claims (8)
1., based on a Research on Unified Power Quality Conditioner for thyristor and energy storage, it is characterized in that, this adjuster comprises super capacitor energy-storage module, two-way DC-DC converter module, inverter module, bidirectional thyristor module; Wherein, super capacitor energy-storage module is in parallel with the low-pressure side of two-way DC-DC converter module, the high-pressure side of two-way DC-DC converter and inverter module DC side parallel, inverter module ac output end is parallel between bidirectional thyristor module output and load M, bidirectional thyristor input connected system power supply AC, bidirectional thyristor module output is also simultaneously direct to be connected with load.
2. Research on Unified Power Quality Conditioner as claimed in claim 1, it is characterized in that, described inverter module is made up of conventional three-phase inverter and LC filter.
3. Research on Unified Power Quality Conditioner as claimed in claim 1, is characterized in that, described bidirectional thyristor module by routine bidirectional thyristor and to drive and control circuit forms.
4. Research on Unified Power Quality Conditioner as claimed in claim 3, is characterized in that, described drive circuit adopts the device of Magnetic isolation or light isolation drive scheme, and control circuit adopts the circuit of input and output pattern, realizes turn on thyristors and controls with shutoff.
5. Research on Unified Power Quality Conditioner as claimed in claim 1, it is characterized in that, described two-way DC-DC converter module adopts conventional voltage raising and reducing circuit or the DC-DC converter based on high frequency transformer.
6. Research on Unified Power Quality Conditioner as claimed in claim 1, it is characterized in that, described super-capacitor module is combined by the connection in series-parallel of super capacitor monomer.
7. the Research on Unified Power Quality Conditioner as described in any one of claim 1-5, it is characterized in that, also comprise isolating transformer module, the AC of this isolating transformer is connected in parallel on the input of described inverter module, and output is parallel between bidirectional thyristor module output and load M.
8. Research on Unified Power Quality Conditioner as claimed in claim 7, is characterized in that, this isolating transformer adopts three-phase and four-line isolating transformer, or three-phase four-line dc-to-ac converter.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528984.6U CN204089192U (en) | 2014-09-15 | 2014-09-15 | Based on the Research on Unified Power Quality Conditioner of thyristor and energy storage |
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| CN201420528984.6U CN204089192U (en) | 2014-09-15 | 2014-09-15 | Based on the Research on Unified Power Quality Conditioner of thyristor and energy storage |
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| CN204089192U true CN204089192U (en) | 2015-01-07 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218575A (en) * | 2014-09-15 | 2014-12-17 | 任磊 | UPQC (unified power quality conditioner) based on SCR (silicon controlled rectifier) and energy storage |
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2014
- 2014-09-15 CN CN201420528984.6U patent/CN204089192U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104218575A (en) * | 2014-09-15 | 2014-12-17 | 任磊 | UPQC (unified power quality conditioner) based on SCR (silicon controlled rectifier) and energy storage |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171121 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 |