CN102545219A - Alternating-current chopped type static reactive compensation filtering device - Google Patents
Alternating-current chopped type static reactive compensation filtering device Download PDFInfo
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- CN102545219A CN102545219A CN2010105880476A CN201010588047A CN102545219A CN 102545219 A CN102545219 A CN 102545219A CN 2010105880476 A CN2010105880476 A CN 2010105880476A CN 201010588047 A CN201010588047 A CN 201010588047A CN 102545219 A CN102545219 A CN 102545219A
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- switch
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- chopper
- continued flow
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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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Abstract
The invention relates to an alternating-current chopped type static reactive compensation filtering device, which adopts capacitive reactive power of an alternating-current chopped passive filter FC. A dynamic reactive adjustment scheme is applied. The alternating-current chopped type static reactive compensation filtering device has the advantages that functions of treating power grid harmonics and dynamic reactive compensation are realized, the filtering device does not have harmonics, the capacity of a used reactor is quite low and the like. Accordingly, cost and volume are greatly reduced.
Description
Technical field
The present invention relates to electric filtering and reactive power compensation device, relate in particular to a kind of AC chopping formula static reactive filter.
Background technology
Along with the extensive use of power electronic technology in industry, the dirty problem of the harmonic wave of electrical network is dyed and is on the rise.Original in addition a lot of power consumers are serious because of the voltage fluctuation that its operating characteristic causes, high order harmonic component is many, power factor of electric network is low.Must adopt technical measures under the prerequisite that suppresses harmonic pollution, to improve power factor, could contain serious day by day electric network pollution.
The employing power electronic equipment is handled up idle nearby and is absorbed the harmonic current that harmonic source produces, and is the effective measures that improve power factor and inhibition harmonic pollution.At present; TCR type SVC (SVC) is acknowledged as the best equipment of reactive power compensation; It efficiently solves the voltage fluctuation problem with the fast characteristics of its response; Form single tuning passive filter FC through the little tuning reactor of series connection on shunt capacitor, the fixing subharmonic of filtering when capacitive reactive power is provided fixedly, the perception enforcement dynamic reactive adjusting that provides with thyristor-controlled reactor TCR again.Because the maximum inductive that this scheme requires TCR to provide is idle must be greater than fixing capacitive reactive power, so causes reactor huge, cost and floor space are multiplied.Thyristor-controlled reactor TCR itself also is a harmonic source in addition, needs ad hoc huge passive filter filtering, has therefore further increased cost and the floor space of SVC.The cost and the floor space that reduce harmonic wave control and reactive power compensation are to administer the technical barrier of electric network pollution.
Summary of the invention
1. technical problem
The technical problem that the present invention will solve is, provides a kind of solution harmonic wave control and reactive power compensator expensive high floor space problem, is used for the AC chopping formula static reactive filter of low-pressure system.
2. technical scheme
AC chopping formula static reactive filter of the present invention is a kind of self no harmonic wave, and low-cost, small size have the device of harmonic wave control and no-power compensation function concurrently.Technical scheme is following:
1) the present invention is composed in series adjustable capacitive filter branch by AC chopper and passive filter FC, implements filtering fixedly subharmonic and dynamic reactive adjusting.It is characterized in that: an end of the AC chopping switch of AC chopper connects alternating current input power supplying, and the AC chopper other end connects an end of passive filter and exchanges continued flow switch, and the other end that exchanges continued flow switch connects the other end of passive filter.
2) characteristic of AC chopper is among the present invention, AC chopper by the AC chopping switch with exchange continued flow switch and form, wherein the AC chopping switch is carried out pwm signal and is regulated capacitive reactive power, exchanging continued flow switch is for inductive load the afterflow path to be provided.
3) the AC chopping switch with the characteristic that exchanges continued flow switch is among the present invention, and the AC chopping switch all is two-way power switch with exchanging continued flow switch.
4) characteristic of two-way power switch is among the present invention; Two-way power switch is by two VMOS power tube series configuration; The drain electrode of a VMOS power tube links to each other with the drain electrode of another VMOS power tube; The source electrode of a power switch pipe is an end of two-way power switch, and the another power switch pipe is the other end of two-way power switch.
5) basic inductive branch is kept minimum-filtered power among the present invention, it is characterized in that, small inductor one end is connected an end of nonlinear load, and the small inductor other end is connected the other end of nonlinear load.
3. beneficial effect
The present invention compared with prior art has the following advantages:
1) the present invention adopts AC chopping to regulate capacitive reactive power, has reduced the reactor capacity significantly, the cost of minimizing 30% and 60% volume;
2) the no harmonic wave of AC chopper of the present invention self, the economical thus passive filter of eliminating self harmonic wave reduces 10% cost and 20% volume;
3) the present invention has harmonic wave control and dynamic no-power compensation function concurrently.
Description of drawings
Fig. 1 is the organigram of the two-way power switch that AC chopper uses in the AC chopping formula static reactive filter of the present invention; The two-way power switch that bidirectional switch S1 in Fig. 2～3 and S2 are to use this kind mode to construct; Wherein S1 is the AC chopping switch, and S2 exchanges continued flow switch.
Fig. 2 is an AC chopper sketch map in the AC chopping formula static reactive filter of the present invention.
Fig. 3 is an AC chopping formula static reactive filter schematic diagram of the present invention.
Main designation in the above-mentioned accompanying drawing: S1---AC chopping switch, S2---exchange continued flow switch, FC---passive filter, L
0---basic reactor, u
F---alternating current input power supplying phase voltage, i
L---the load phase current.
Embodiment
Specify the embodiment of technical scheme with reference to accompanying drawing:
AC chopping formula static reactive filter schematic diagram, as shown in Figure 3.AC chopping switch S 1 one ends that are used for AC chopper connect alternating current input power supplying phase voltage u
F, the other end connects the end of passive filter FC; An end that is used for the interchange continued flow switch S2 of inductance nature change of current path connects the end of passive filter FC and the other end of AC chopping switch S 1; The other end that exchanges continued flow switch S2 connects the other end of passive filter FC, has formed adjustable capacitive filter branch.
Basis reactor L
0One end connects alternating current input power supplying phase voltage u
F, the other end connects the other end of passive filter FC, has formed basic inductive branch.
The operation principle of AC chopping formula static reactive filter is that power factor controller is according to alternating current input power supplying phase voltage u
FWith load phase current i
LPhase difference, obtain the equivalent susceptance value that inserts electrical network, and then convert the equivalent susceptance value to the PWM duty cycle signals according to predetermined relation, control the capacitive reactive power of adjustable capacitive filtering, suppressing fixedly to implement the dynamic reactive adjusting in the subharmonic.When the basis inductive branch is resistive at nonlinear load, provide a certain amount of perception idle, keep minimum-filtered power.
Claims (5)
1. the present invention is composed in series adjustable capacitive filter branch by AC chopper and passive filter FC, implements filtering fixedly subharmonic and dynamic reactive adjusting.It is characterized in that: an end of the AC chopping switch of AC chopper connects alternating current input power supplying, and the AC chopper other end connects an end of passive filter and exchanges continued flow switch, and the other end that exchanges continued flow switch connects the other end of passive filter.
2. the characteristic of AC chopper is among the present invention, AC chopper by the AC chopping switch with exchange continued flow switch and form, wherein the AC chopping switch is carried out pwm signal and is regulated capacitive reactive power, exchanging continued flow switch is for inductive load the afterflow path to be provided.
3. the AC chopping switch with the characteristic that exchanges continued flow switch is among the present invention, and the AC chopping switch all is two-way power switch with exchanging continued flow switch.
4. the characteristic of two-way power switch is among the present invention; Two-way power switch is by two VMOS power tube series configuration; The drain electrode of a VMOS power tube links to each other with the drain electrode of another VMOS power tube; The source electrode of a power switch pipe is an end of two-way power switch, and the another power switch pipe is the other end of two-way power switch.
5. basic inductive branch is kept minimum-filtered power among the present invention, it is characterized in that, small inductor one end is connected an end of nonlinear load, and the small inductor other end is connected the other end of nonlinear load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105880476A CN102545219A (en) | 2010-12-15 | 2010-12-15 | Alternating-current chopped type static reactive compensation filtering device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105880476A CN102545219A (en) | 2010-12-15 | 2010-12-15 | Alternating-current chopped type static reactive compensation filtering device |
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| Publication Number | Publication Date |
|---|---|
| CN102545219A true CN102545219A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105880476A Pending CN102545219A (en) | 2010-12-15 | 2010-12-15 | Alternating-current chopped type static reactive compensation filtering device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868168A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Three-phase static reactive compensator based on high-speed self-turn-off device |
| CN102868170A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Single-phase static reactive power compensator based on IGBT (Insulated Gate Bipolar Translator) |
| CN102868169A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Three-phase static reactive compensator based on IGBT |
| CN102882199A (en) * | 2012-09-11 | 2013-01-16 | 吴加林 | Short-trouble current limiter for high-speed self-turn-off device |
| CN103457276A (en) * | 2013-09-04 | 2013-12-18 | 北京英博新能源有限公司 | Static voltage regulating type reactive compensation device |
| CN103904652A (en) * | 2014-04-21 | 2014-07-02 | 大连理工大学 | Power supply network harmonic suppression method and system capable of resisting impulse noise interference |
-
2010
- 2010-12-15 CN CN2010105880476A patent/CN102545219A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102868168A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Three-phase static reactive compensator based on high-speed self-turn-off device |
| CN102868170A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Single-phase static reactive power compensator based on IGBT (Insulated Gate Bipolar Translator) |
| CN102868169A (en) * | 2012-09-11 | 2013-01-09 | 吴加林 | Three-phase static reactive compensator based on IGBT |
| CN102882199A (en) * | 2012-09-11 | 2013-01-16 | 吴加林 | Short-trouble current limiter for high-speed self-turn-off device |
| CN103457276A (en) * | 2013-09-04 | 2013-12-18 | 北京英博新能源有限公司 | Static voltage regulating type reactive compensation device |
| CN103457276B (en) * | 2013-09-04 | 2015-11-25 | 北京英博新能源有限公司 | A kind of static voltage regulating imaginary power compensation arrangement |
| CN103904652A (en) * | 2014-04-21 | 2014-07-02 | 大连理工大学 | Power supply network harmonic suppression method and system capable of resisting impulse noise interference |
| CN103904652B (en) * | 2014-04-21 | 2017-01-18 | 大连理工大学 | Power supply network harmonic suppression method and system capable of resisting impulse noise interference |
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Application publication date: 20120704 |