CN204597489U - A kind of chain type dynamic reactive compensation device based on three level modular structure - Google Patents
A kind of chain type dynamic reactive compensation device based on three level modular structure Download PDFInfo
- Publication number
- CN204597489U CN204597489U CN201520297913.4U CN201520297913U CN204597489U CN 204597489 U CN204597489 U CN 204597489U CN 201520297913 U CN201520297913 U CN 201520297913U CN 204597489 U CN204597489 U CN 204597489U
- Authority
- CN
- China
- Prior art keywords
- loop
- device based
- chain type
- compensation device
- type dynamic
- Prior art date
- 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.)
- Active
Links
Classifications
-
- 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
The utility model discloses a kind of chain type dynamic reactive compensation device based on three level modular structure, adopt chain structure, by the single-phase H-bridge circuit series connection of multiple full control three level, reach idle output, thus the reactive power compensation effectively solved in electrical network and harmonics restraint, power model of the present utility model mainly comprises inversion circuit, DC loop, charge circuit and module control unit, and module control unit has the sampling of mid point busbar voltage, realizes neutral balance function.
Description
Technical field
The utility model relates to a kind of chain type dynamic reactive compensation device based on three level modular structure, belongs to electric energy and administers field.
Background technology
Along with the continuous application of power electronic technology in electric power system, various power quality problem is as low in voltage fluctuation, three-phase imbalance, power factor, voltage harmonic etc. emerges.Certain impact is there is in the access of the new forms of energy such as wind-powered electricity generation, photovoltaic electric power on the stable operation of electrical network.The equipment of power quality controlling aspect can solve power quality problem, improves power system operation stability and reliability.The chain topology of the mainly cells cascaded multilevel technology of high-voltage large-capacity reactive power compensator is in the market main, its advantage is that the mode that have employed power model series connection realizes High voltage output, solve the problem of the withstand voltage deficiency of power device of current main flow, but due to the restriction of device withstand voltage, module number is huger, control system is complicated, and designing requirement is high.
Utility model content
The purpose of this utility model is to provide a kind of chain type dynamic reactive compensation device based on three level modular structure, this device adopts chain structure, by the single-phase H-bridge circuit series connection of multiple full control three level, reach idle output, thus the reactive power compensation effectively solved in electrical network and harmonics restraint.
To achieve these goals, the utility model is achieved through the following technical solutions:
Based on a chain type dynamic reactive compensation device for three level modular structure, comprise the power model of several three-level structure, the power model of described each three-level structure includes inversion circuit, DC loop, charge circuit and module control unit; Described module control unit is connected with device master control system by optical fiber; Described module control unit comprises order circuit and the data sampling loop be attached thereto, pluse output circuit, fault feedback loop; Described inversion circuit, charge circuit, DC loop are in series; Described inversion circuit adopts the three-level topology structure with neutral point clamp; Described DC loop is made up of bus capacitor and divider resistance; Described charge circuit is made up of charging resistor and charged bypass switch.
Aforesaid DC loop is made up of 2 groups of bus capacitors and divider resistance, and described often group bus capacitor and divider resistance are in parallel; Described two bus capacitors series connection.
Aforesaid inversion circuit is made up of two brachium pontis, is connected across positive and negative DC bus respectively; Described each brachium pontis is by 4 transistors and 2 diode compositions; The series connection mid point of 2 diodes of a described brachium pontis is connected with the series connection mid point of 2 diodes of another brachium pontis, and is connected with the series connection mid point of two bus capacitors of DC loop.
Aforesaid charging resistor and charged bypass switch are in parallel.
The series connection mid point of the diode of the brachium pontis of described inversion circuit is accessed in aforesaid data sampling loop.
Aforesaid pluse output circuit accesses the grid of 8 transistors.
Aforesaid fault feedback loop accesses the drain electrode of 8 transistors of described inversion circuit.
Device of the present utility model adopts chain structure, by the single-phase H-bridge circuit series connection of multiple full control three level, reach idle output, thus the reactive power compensation effectively solved in electrical network and harmonics restraint, there is serial module structure quantity few, Redundancy Design can realize module failure fault-tolerant operation, there is rapid dynamic response speed, the features such as control precision is high, and reliability is strong.
Accompanying drawing explanation
Fig. 1 is chain type SVG device schematic diagram;
Fig. 2 is three-level structure power model schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described:
Chain type dynamic reactive compensation device based on three level modular structure of the present utility model as shown in Figure 1, comprise the power model of several three-level structure, each three-level structure power model mainly comprises inversion circuit, DC loop, charge circuit and module control unit as shown in Figure 2.
Specific as follows:
Inversion circuit have employed three-level topology structure, is made up of two brachium pontis.Wherein transistor S
1, S
2, S
3, S
4with diode D
1, D
2form a brachium pontis, transistor S
5, S
6, S
7, S
8with diode D
3, D
4form another brachium pontis, be connected across positive and negative DC bus respectively.Diode D
1, D
2series connection mid point and diode D
3, D
4series connection mid point be connected, and and bus capacitor C
1, C
2series connection mid point connect.Three-level topology structure, relative to common H bridge construction, withstand voltagely can improve twice, and harmonic wave is less, has redundancy feature in addition, can when IGBT fault by-passing part circuit, reach and export continuously and protective effect.
DC loop is made up of 2 groups of bus capacitors and divider resistance, is respectively bus capacitor C
1with divider resistance R
1, bus capacitor C
2with divider resistance R
2.Wherein, bus capacitor C
1with divider resistance R
1be in parallel, bus capacitor C
2with divider resistance R
2be in parallel, bus capacitor C
1, C
2series connection.
Charge circuit is by charging resistor R
cwith charged bypass switch S
cform.When initially powering on, charged bypass switch S
cremain open state, charged bypass switch S after the charging complete of wait bus capacitor
cclosed, thus by charging resistor R
cbypass.
Module control unit to be connected with device master control system by optical fiber and to carry out communication, and module control unit comprises order circuit and the data sampling loop be attached thereto, pluse output circuit, fault feedback loop.Wherein, the series connection mid point of the diode of the brachium pontis of data sampling loop access inversion circuit, is responsible for gathering mid point busbar voltage, namely the busbar voltage of half-bridge and lower half-bridge is gone up, the signals such as module temperature, control and temperature alarming for bus uniform voltage, realize neutral balance function.The grid of 8 transistors of pluse output circuit access inversion circuit, is responsible for output 8 transistor S
1, S
2, S
3, S
4s
5, S
6, S
7, S
8gate electrode drive signals, for driving transistors turn off and open-minded.The drain electrode of 8 transistors of fault feedback loop access inversion circuit, is responsible for the fault-signal of transistor to feed back to device master control system, so that the response of device master control system.Order circuit is responsible for the communication between power model control unit and device master control system.
Claims (7)
1. the chain type dynamic reactive compensation device based on three level modular structure, it is characterized in that, comprise the power model of several three-level structure, the power model of described each three-level structure includes inversion circuit, DC loop, charge circuit and module control unit; Described module control unit is connected with device master control system by optical fiber; Described module control unit comprises order circuit and the data sampling loop be attached thereto, pluse output circuit, fault feedback loop; Described inversion circuit, charge circuit, DC loop are in series; Described inversion circuit adopts the three-level topology structure with neutral point clamp; Described DC loop is made up of bus capacitor and divider resistance; Described charge circuit is made up of charging resistor and charged bypass switch.
2. a kind of chain type dynamic reactive compensation device based on three level modular structure according to claim 1, it is characterized in that, described DC loop is made up of 2 groups of bus capacitors and divider resistance, and described often group bus capacitor and divider resistance are in parallel; Described two bus capacitors series connection.
3. a kind of chain type dynamic reactive compensation device based on three level modular structure according to claim 2, it is characterized in that, described inversion circuit is made up of two brachium pontis, is connected across positive and negative DC bus respectively; Described each brachium pontis is by 4 transistors and 2 diode compositions; The series connection mid point of 2 diodes of a described brachium pontis is connected with the series connection mid point of 2 diodes of another brachium pontis, and is connected with the series connection mid point of two bus capacitors of DC loop.
4. a kind of chain type dynamic reactive compensation device based on three level modular structure according to claim 1, it is characterized in that, described charging resistor and charged bypass switch are in parallel.
5. a kind of chain type dynamic reactive compensation device based on three level modular structure according to claim 3, it is characterized in that, the series connection mid point of the diode of the brachium pontis of described inversion circuit is accessed in described data sampling loop.
6. a kind of chain type dynamic reactive compensation device based on three level modular structure according to claim 3, it is characterized in that, described pluse output circuit accesses the grid of 8 transistors.
7. a kind of chain type dynamic reactive compensation device based on three level modular structure according to claim 3, it is characterized in that, described fault feedback loop accesses the drain electrode of 8 transistors of described inversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297913.4U CN204597489U (en) | 2015-05-08 | 2015-05-08 | A kind of chain type dynamic reactive compensation device based on three level modular structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520297913.4U CN204597489U (en) | 2015-05-08 | 2015-05-08 | A kind of chain type dynamic reactive compensation device based on three level modular structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597489U true CN204597489U (en) | 2015-08-26 |
Family
ID=53933602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520297913.4U Active CN204597489U (en) | 2015-05-08 | 2015-05-08 | A kind of chain type dynamic reactive compensation device based on three level modular structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597489U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450076A (en) * | 2015-09-15 | 2016-03-30 | 珠海格力电器股份有限公司 | Z-source three-level inverter and air conditioning system |
| CN106505895A (en) * | 2016-10-28 | 2017-03-15 | 北京科诺伟业科技股份有限公司 | Three level microgrid current transformers |
| CN109861541A (en) * | 2018-12-26 | 2019-06-07 | 东北大学 | Five level H-bridges of one kind recommend bidirectional, dc transformation topology structure |
| CN110456198A (en) * | 2019-08-14 | 2019-11-15 | 国网湖南省电力有限公司 | Soft powering method under chain type SVG two and a string of test patterns |
-
2015
- 2015-05-08 CN CN201520297913.4U patent/CN204597489U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105450076A (en) * | 2015-09-15 | 2016-03-30 | 珠海格力电器股份有限公司 | Z-source three-level inverter and air conditioning system |
| CN106505895A (en) * | 2016-10-28 | 2017-03-15 | 北京科诺伟业科技股份有限公司 | Three level microgrid current transformers |
| CN109861541A (en) * | 2018-12-26 | 2019-06-07 | 东北大学 | Five level H-bridges of one kind recommend bidirectional, dc transformation topology structure |
| CN110456198A (en) * | 2019-08-14 | 2019-11-15 | 国网湖南省电力有限公司 | Soft powering method under chain type SVG two and a string of test patterns |
| CN110456198B (en) * | 2019-08-14 | 2021-09-28 | 国网湖南省电力有限公司 | Soft power-on method in chain type SVG two-in-one-string test mode |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103401462B (en) | Based on the single-phase chain static synchronous compensator of three level H bridge cascade | |
| Jia et al. | Design of hybrid energy storage control system for wind farms based on flow battery and electric double-layer capacitor | |
| CN102983584B (en) | A kind of THE UPFC for unbalanced system | |
| CN204597489U (en) | A kind of chain type dynamic reactive compensation device based on three level modular structure | |
| CN203800680U (en) | Large power bidirectional deflector capable of supporting access of multiple cell groups | |
| CN112072716A (en) | Power distribution network terminal electric energy router and control method thereof | |
| CN102969708B (en) | Flow controller between a kind of line based on modular multilevel converter structure | |
| CN102005772B (en) | Network combination inversion system and control method thereof | |
| CN102916435B (en) | A kind of battery energy storage power conversion system containing Z source network and control method thereof | |
| CN103066587A (en) | Optimal configuration method of modular multi-level flexible direct current system | |
| CN108306320A (en) | A kind of energy accumulation current converter and energy storage converter system | |
| CN105763085A (en) | Energy storage grid-connected converter based on reverse-blocking type three levels, and control method therefor | |
| CN203399013U (en) | Static synchronous compensator based on three-level H bridge cascade and voltage source inversion module | |
| CN106410932A (en) | Chained battery energy storage converter suitable for medium-voltage DC power distribution network and control method | |
| CN201450340U (en) | Mixed-type stepless reactive compensation device | |
| CN108233396A (en) | A kind of Unified Power Quality Controller and its control method with light storage unit | |
| CN203590069U (en) | Mixed type multi-level converter based on full-bridge module and half-bridge module | |
| CN207732448U (en) | A kind of energy accumulation current converter and energy storage converter system | |
| CN103618328A (en) | Power conversion system of mobile energy accumulating device | |
| CN203039365U (en) | Interline power flow controller based on modularized multi-level transverter | |
| CN202930956U (en) | Unified power flow controller used in unbalanced system | |
| CN105375515A (en) | Modularized multi-level comprehensive apparatus combined with photovoltaic generation | |
| CN205160403U (en) | Energy storage power converting system based on many level of modularization converter | |
| CN202535087U (en) | Unified power flow controller based on modular multilevel converter structure | |
| CN206323163U (en) | A kind of equivalent idle battery circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |