CN104716653A - Reactive compensation system - Google Patents
Reactive compensation system Download PDFInfo
- Publication number
- CN104716653A CN104716653A CN201310674674.5A CN201310674674A CN104716653A CN 104716653 A CN104716653 A CN 104716653A CN 201310674674 A CN201310674674 A CN 201310674674A CN 104716653 A CN104716653 A CN 104716653A
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- CN
- China
- Prior art keywords
- voltage
- reactive compensation
- control system
- grid side
- signals
- 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.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
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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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a reactive compensation system. The reactive compensation system comprises an LCL filter circuit, an IGBT bridge, a capacitor, a thyristor, a reactive compensation unit, a voltage and current detection circuit and a control system, wherein the LCL filter circuit, the IGBT bridge and the capacitor are sequentially connected with a power grid side; the thyristor and the reactive compensation unit are sequentially connected with the power grid side; the voltage and current detection circuit and the control system are sequentially connected with the power grid side; the two ends of the capacitor are connected with the IGBT bridge; the voltage and current detection circuit collects voltage signals and current signals of the power grid side and transmits the signals to the control system; the control system processes the received voltage signals and the received current signals and sends control signals to the thyristor and the IGBT bridge respectively according to the processing result. Reactive parameters can be automatically and continuously adjusted according to the collected voltage signals and the collected current signals, and reactive power compensation can be carried out rapidly and highly precisely.
Description
Technical field
The present invention relates to reactive power compensation field, particularly relate to a kind of reactive compensation system.
Background technology
At present, the reactive-load compensation equipment of each transformer station standard configuration, is mostly the capacitor group switching mode that power factor controller adds contactor or capacitor control, causes capacitor life-span not long because of frequent switching, and because the link that will manually participate in is more, can not continuous print reactive power compensation.Therefore, study a kind of relative automation and quick, high-precision bucking-out system is the applicant be devoted to solve problem.
Summary of the invention
The object of the invention is to overcome the defect of prior art and a kind of reactive compensation system is provided, can according to voltage, the current signal gathered, Automatic continuous regulates idle parameter, and fast, high accuracy carries out reactive power compensation.
The technical scheme realizing above-mentioned purpose is:
A kind of reactive compensation system, outside electric power network side, described reactive compensation system comprises the LCL filter circuit (passive filter circuit), the IGBT(igbt that are connected successively with described grid side) bridge and electric capacity, the thyristor be connected successively with described grid side and reactive compensation unit, the voltage and current detection circuit be connected successively with described grid side and control system, wherein:
The two ends of described electric capacity all connect described IGBT bridge;
Described voltage and current detection circuit gathers voltage signal and the current signal of grid side, passes to described control system;
Described control system, to the voltage signal received and current signal process, sends control signal to described thyristor and IGBT bridge respectively according to result.
Above-mentioned reactive compensation system, wherein, described LCL filter circuit comprises three capacitors and two groups of reactors, wherein:
Described two groups of reactors are interconnected, and often organize reactor and comprise three reactors arranged side by side;
Described three capacitors one end separately connects three reactors arranged side by side in described often group reactor respectively, and the respective other end is interconnected.
The invention has the beneficial effects as follows: the present invention according to voltage, the current signal gathered, can regulate idle parameter continuously automatically, and quick, high accuracy carries out reactive power compensation, and reach the power factor set by system, practicality is good.
Accompanying drawing explanation
Fig. 1 is the system construction drawing of reactive compensation system of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1, a kind of reactive compensation system 2 of the present invention, outside electric power network side 1, reactive compensation system 2 comprises the LCL filter circuit 21, IGBT bridge 22 and the electric capacity C that are connected successively with grid side 1, the thyristor 23 be connected successively with grid side 1 and reactive compensation unit 24, the voltage and current detection circuit 25 be connected successively with grid side 1 and control system 26, wherein:
The two ends of electric capacity C all connect IGBT bridge 22;
Voltage and current detection circuit 25 gathers voltage signal and the current signal of grid side, and passes to control system 26; Control system 26, to the voltage signal received and current signal process, sends control signal to thyristor 23 and IGBT bridge 22 respectively according to result, and thyristor 23 carries out break-make according to the control signal received, and after connection, reactive compensation unit 24 compensates; IGBT bridge 22 is made up of six igbts, according to the control signal action received.
LCL filter circuit 31 comprises three capacitors and two groups of reactors, wherein:
Two groups of reactors are interconnected, and often organize reactor and comprise three reactors arranged side by side;
Three capacitor one end separately connect respectively often organizes three reactors arranged side by side in reactor, and the respective other end is interconnected.
In sum, a kind of reactive compensation system 3 of the present invention, according to voltage, the current signal gathered, automatically can regulate idle parameter continuously, quick, high accuracy carries out reactive power compensation, and reach the power factor set by system, practicality is good.
Claims (2)
1. a reactive compensation system, outside electric power network side, it is characterized in that, described reactive compensation system comprises the LCL filter circuit, IGBT bridge and the electric capacity that are connected successively with described grid side, the thyristor be connected successively with described grid side and reactive compensation unit, the voltage and current detection circuit be connected successively with described grid side and control system, wherein:
The two ends of described electric capacity all connect described IGBT bridge;
Described voltage and current detection circuit gathers voltage signal and the current signal of grid side, passes to described control system;
Described control system, to the voltage signal received and current signal process, sends control signal to described thyristor and IGBT bridge respectively according to result.
2. reactive compensation system according to claim 1, is characterized in that, described LCL filter circuit comprises three capacitors and two groups of reactors, wherein:
Described two groups of reactors are interconnected, and often organize reactor and comprise three reactors arranged side by side;
Described three capacitors one end separately connects three reactors arranged side by side in described often group reactor respectively, and the respective other end is interconnected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674674.5A CN104716653A (en) | 2013-12-11 | 2013-12-11 | Reactive compensation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310674674.5A CN104716653A (en) | 2013-12-11 | 2013-12-11 | Reactive compensation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104716653A true CN104716653A (en) | 2015-06-17 |
Family
ID=53415725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310674674.5A Pending CN104716653A (en) | 2013-12-11 | 2013-12-11 | Reactive compensation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104716653A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202014100U (en) * | 2011-04-11 | 2011-10-19 | 河南天创风电设备有限公司 | Dynamic reactive power compensator for photovoltaic power station grid connected inverter |
| CN102570472A (en) * | 2010-12-07 | 2012-07-11 | 吉林省电力有限公司四平供电公司 | Comprehensive compensation control device for effectively improving power quality |
| CN102983575A (en) * | 2011-09-07 | 2013-03-20 | 上海市电力公司 | Reactive compensation system |
-
2013
- 2013-12-11 CN CN201310674674.5A patent/CN104716653A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570472A (en) * | 2010-12-07 | 2012-07-11 | 吉林省电力有限公司四平供电公司 | Comprehensive compensation control device for effectively improving power quality |
| CN202014100U (en) * | 2011-04-11 | 2011-10-19 | 河南天创风电设备有限公司 | Dynamic reactive power compensator for photovoltaic power station grid connected inverter |
| CN102983575A (en) * | 2011-09-07 | 2013-03-20 | 上海市电力公司 | Reactive compensation system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150617 |