CN202535070U - Unified power quality controller - Google Patents
Unified power quality controller Download PDFInfo
- Publication number
- CN202535070U CN202535070U CN2012201274503U CN201220127450U CN202535070U CN 202535070 U CN202535070 U CN 202535070U CN 2012201274503 U CN2012201274503 U CN 2012201274503U CN 201220127450 U CN201220127450 U CN 201220127450U CN 202535070 U CN202535070 U CN 202535070U
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- CN
- China
- Prior art keywords
- inverter
- transformer
- quality controller
- unified
- electric energy
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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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
-
- 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
Abstract
Disclosed in the utility model is a unified power quality controller (UPQC), which is accessed to a power supply system. The UPQC comprises a first transformer, a first inverter, a second transformer, a second inverter and a direct current energy storage unit. Two ends of the direct current energy storage unit are simultaneously connected with the first inverter and the second inverter; the first inverter is connected in series to the power supply system by the first transformer; and the second inverter is connected in parallel to the power supply system by the second transformer. According to the utility model, the provided UPQC has high stability and certain reserved energy.
Description
Technical field
The utility model relates to a kind of unified electric energy quality controller (UPQC).
Background technology
For electric power system transient voltage quality problems, main at present distribution level static dynamic no-power compensation device (DSTATCOM), active filter (APF) and dynamic electric voltage recovery device modern DFACTS (d-facts device) equipment such as (DVR) of adopting.Unified electric energy quality controller (UPQC) is the most obvious for the solution effect of electric power system quality of voltage problem; Function is the most perfect, is the emerging device in the custom power technology, and it integrates series-type voltage compensation arrangement, parallel connection type current compensator and energy storage device; The multiple quality of power supply regulatory function of unified realization; Have higher cost performance, input that it should be noted that these equipment has significant effect for the raising of electric power system quality of voltage, has data to show that the U.S. is in the area of dropping into unified electric energy quality controller; When maximum offset be normal voltage 30% the time, approximately can eliminate the electric power system voltage disturbance incident more than 95%.
But, the present unified electric energy quality controller that big capacity, voltage levels also do not occur.
Summary of the invention
The purpose of the utility model is to overcome the defective of prior art and a kind of unified electric energy quality controller is provided, and it is applicable to electric power system, has high stability and certain margin of energy.
The technical scheme that realizes above-mentioned purpose is:
A kind of unified electric energy quality controller inserts electric power system, and this is unified electric energy quality controller and comprises first transformer, first inverter, second transformer, second inverter and dc energy storage unit, wherein:
The two ends of said dc energy storage unit connect said first inverter and second inverter simultaneously;
Said first inverter inserts said electric power system through the series connection of first transformer;
Said second inverter inserts said electric power system through second transformers connected in parallel.
Above-mentioned unified electric energy quality controller, wherein, said first transformer and second transformer are isolating transformer.
Above-mentioned unified electric energy quality controller, wherein, said first inverter and second inverter are the voltage-type three-phase inverter.
Above-mentioned unified electric energy quality controller, wherein, said dc energy storage unit is ultracapacitor or batteries.
The beneficial effect of the utility model is: the utility model is applicable to electric power system, has high stability and certain margin of energy, is based on the unified electric energy quality controller of ultracapacitor or batteries, and is simple in structure and with low cost.
Description of drawings
Fig. 1 is the structure chart of the unified electric energy quality controller of the utility model.
Embodiment
To combine accompanying drawing that the utility model is described further below.
See also Fig. 1, the unified electric energy quality controller of the utility model inserts electric power system, and unified electric energy quality controller comprises the first transformer T1, first inverter 1, the second transformer T2, second inverter 2 and dc energy storage unit 3, wherein:
The two ends of dc energy storage unit 3 connect first inverter 1 and second inverter 2 simultaneously, and being mainly first inverter 1 and second inverter 2 provides the dc voltage of long period to support;
First inverter 1 inserts electric power system through first transformer T1 series connection;
Second inverter 2 inserts electric power system through second transformer T2 parallel connection.
The first transformer T1 and the second transformer T2 are isolating transformer; First inverter 1 and second inverter 2 are the voltage-type three-phase inverter; Dc energy storage unit 3 is ultracapacitor or batteries.First inverter 1 and the first transformer T1 form series unit, have the function of dynamic electric voltage recovery device (DVR) and dynamic uninterrupted power supply (ups) Unity etc.; Second inverter and the second transformer T2 form parallelly connected unit, have the function of static dynamic no-power compensation device (STATCOM) and active filter (APF) etc.;
Above embodiment only supplies to explain the usefulness of the utility model; But not to the restriction of the utility model; The technical staff in relevant technologies field under the situation of spirit that does not break away from the utility model and scope, can also make various conversion or modification; Therefore all technical schemes that are equal to also should belong to the category of the utility model, should be limited each claim.
Claims (4)
1. a unified electric energy quality controller inserts electric power system, it is characterized in that this is unified electric energy quality controller and comprises first transformer, first inverter, second transformer, second inverter and dc energy storage unit, wherein:
The two ends of said dc energy storage unit connect said first inverter and second inverter simultaneously;
Said first inverter inserts said electric power system through the series connection of first transformer;
Said second inverter inserts said electric power system through second transformers connected in parallel.
2. unified electric energy quality controller according to claim 1 is characterized in that, said first transformer and second transformer are isolating transformer.
3. unified electric energy quality controller according to claim 1 is characterized in that, said first inverter and second inverter are the voltage-type three-phase inverter.
4. unified electric energy quality controller according to claim 1 is characterized in that, said dc energy storage unit is ultracapacitor or batteries.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201274503U CN202535070U (en) | 2012-03-30 | 2012-03-30 | Unified power quality controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201274503U CN202535070U (en) | 2012-03-30 | 2012-03-30 | Unified power quality controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202535070U true CN202535070U (en) | 2012-11-14 |
Family
ID=47136227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201274503U Expired - Fee Related CN202535070U (en) | 2012-03-30 | 2012-03-30 | Unified power quality controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202535070U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280961A (en) * | 2013-04-26 | 2013-09-04 | 华北电力大学（保定） | UPQC starting control method based on MMC |
| CN104218575A (en) * | 2014-09-15 | 2014-12-17 | 任磊 | UPQC (unified power quality conditioner) based on SCR (silicon controlled rectifier) and energy storage |
| CN106099990A (en) * | 2016-05-30 | 2016-11-09 | 国家电网公司 | High permeability distributed photovoltaic quality of voltage improves device and control system thereof |
| CN106356814A (en) * | 2016-09-07 | 2017-01-25 | 南京南瑞继保电气有限公司 | Series transformer winding overvoltage protection method based on voltage vector difference |
| CN109390960A (en) * | 2018-10-25 | 2019-02-26 | 南京赫曦电气有限公司 | Real-time online formula comprehensive compensating device and its method temporarily drop in a kind of distribution network voltage |
-
2012
- 2012-03-30 CN CN2012201274503U patent/CN202535070U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280961A (en) * | 2013-04-26 | 2013-09-04 | 华北电力大学（保定） | UPQC starting control method based on MMC |
| CN104218575A (en) * | 2014-09-15 | 2014-12-17 | 任磊 | UPQC (unified power quality conditioner) based on SCR (silicon controlled rectifier) and energy storage |
| CN106099990A (en) * | 2016-05-30 | 2016-11-09 | 国家电网公司 | High permeability distributed photovoltaic quality of voltage improves device and control system thereof |
| CN106356814A (en) * | 2016-09-07 | 2017-01-25 | 南京南瑞继保电气有限公司 | Series transformer winding overvoltage protection method based on voltage vector difference |
| CN106356814B (en) * | 2016-09-07 | 2018-10-16 | 南京南瑞继保电气有限公司 | A kind of series transformer winding over-voltage protection method based on voltage vector difference |
| CN109390960A (en) * | 2018-10-25 | 2019-02-26 | 南京赫曦电气有限公司 | Real-time online formula comprehensive compensating device and its method temporarily drop in a kind of distribution network voltage |
| CN109390960B (en) * | 2018-10-25 | 2020-06-30 | 南京赫曦电气有限公司 | Real-time online comprehensive compensation device and method for voltage sag of power distribution network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121114 Termination date: 20200330 |