CN203536964U - Static VAR (volt-ampere reactive) generator (SVG) - Google Patents
Static VAR (volt-ampere reactive) generator (SVG) Download PDFInfo
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- CN203536964U CN203536964U CN201320646672.0U CN201320646672U CN203536964U CN 203536964 U CN203536964 U CN 203536964U CN 201320646672 U CN201320646672 U CN 201320646672U CN 203536964 U CN203536964 U CN 203536964U
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- voltage
- type active
- reactive
- reacance generator
- sample plate
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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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Abstract
The utility model discloses a static VAR (volt-ampere reactive) generator (SVG). The SVG comprises a voltage-type active VAR generator, a voltage sampling plate, a current sampling plate, a sampling conditioning circuit, a DSP control circuit and an isolation drive circuit, wherein capacitors are connected between inductors on output sides of the voltage-type active VAR generator, and thus an LCL filter is formed; signals sampled by the current sampling plate and the voltage sampling plate, after the conditioning by the sampling conditioning circuit, are sent to the DSP control circuit respectively; the DSP control circuit, according to results of calculation and processing, performs chopping through the isolation drive circuit which controls ON/OFF states of a switching tube in the voltage-type active VAR generator; and the chopped reactive voltage goes through the LCL filter and is connected into a power grid. The SVG has relatively small output impedance, good dynamic performance and high control precision, and thus improves the response speed of the SVG.
Description
Technical field
The utility model relates to Power Conditioning Unit field, is specially a kind of reactive power adjusting device.
Background technology
reactive power adjusting device (SVG) is a kind of inactive reacance generator, its main circuit is exactly a bridge-type current transformer that adopts modularized design, what its switching device adopted is full-control type power semiconductor switches device, as IGBT etc., by the suitable control to these switching devices, can make AC side of converter produce phase place and adjustable output voltage or the electric current of amplitude, reach the object of compensating reactive power and harmonic wave.There is bad dynamic performance, output impedance is large, control precision is low, response speed is slow shortcoming in prior art reactive power adjusting device.
Utility model content
The purpose of this utility model is to provide a kind of reactive power adjusting device, the problem existing to solve prior art.
In order to achieve the above object, the technical scheme that the utility model adopts is:
A kind of reactive power adjusting device, it is characterized in that: comprise voltage type active reacance generator, voltage sample plate, current sample plate, sampling modulate circuit, DSP control circuit, isolated drive circuit, in described voltage type active reacance generator, between outlet side inductance, access electric capacity and form LCL filter, described current sample plate, sample the respectively reactive voltage of active reacance generator outlet side of voltage sample plate, reactive current signal, reactive voltage, reactive current signal is sent into respectively DSP control circuit and is calculated and process after the conditioning of over-sampling modulate circuit, DSP control circuit is controlled switching tube in voltage type active reacance generator according to the result of calculating and process in PWM mode break-make by isolated drive circuit is to carry out copped wave, reactive voltage after copped wave is connected to the grid through the LCL filter building in voltage type active reacance generator.
Described a kind of reactive power adjusting device, it is characterized in that: described voltage type active reacance generator comprises the switching tube series arm that three tunnels are parallel with one another, electric capacity with three-way switch pipe string connection branch circuit parallel connection, each switching tube series arm is in series by two switching tubes, in each switching tube series arm, between two switching tubes, there is respectively output lead to draw, after being in series with respectively two inductance on three road output leads, connect altogether again, on each output lead, between two inductance, there is respectively wire to draw, three pass connect altogether as voltage type active reacance generator output access electrical network after going out to connect respectively on wire electric capacity, by inductance and electric capacity, form LCL filter.
Described a kind of reactive power adjusting device, is characterized in that: on voltage sample plate, current sample plate output, have access to respectively anti-aliasing digital filter.
The utility model builds LCL filter at voltage type active reacance generator, by LCL filter, in electrical network, is incorporated to reactive voltage, have less output impedance, and dynamic property is good, and control precision is high, has improved the response speed of reactive power adjusting device.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Embodiment
As shown in Figure 1.A kind of reactive power adjusting device, comprise voltage type active reacance generator, voltage sample plate, current sample plate, sampling modulate circuit, DSP control circuit, isolated drive circuit, in voltage type active reacance generator, between outlet side inductance, access electric capacity and form LCL filter, current sample plate, sample the respectively reactive voltage of active reacance generator outlet side of voltage sample plate, reactive current signal, reactive voltage, reactive current signal is sent into respectively DSP control circuit and is calculated and process after the conditioning of over-sampling modulate circuit, DSP control circuit is controlled switching tube in voltage type active reacance generator according to the result of calculating and process in PWM mode break-make by isolated drive circuit is to carry out copped wave, reactive voltage after copped wave is connected to the grid through the LCL filter building in voltage type active reacance generator.
Voltage type active reacance generator comprises the switching tube series arm that three tunnels are parallel with one another, electric capacity with three-way switch pipe string connection branch circuit parallel connection, first switching tube series arm is by switch transistor T 1, T2 is in series, second switching tube series arm is by switch transistor T 3, T4 is in series, the 3rd switching tube series arm is by switch transistor T 5, T6 is in series, capacitor C s is connected in parallel in the switching tube series arm parallel with one another of three tunnels, in each switching tube series arm, between two switching tubes, there is respectively output lead to draw, on first via output lead, be in series with inductance L s1, Ls2, on the second road output lead, be in series with inductance L s3, Ls4, on Third Road output lead, be in series with inductance L s5, Ls6, on each output lead, between two inductance, there is respectively wire to draw, the first via is drawn and on wire, is connected capacitor C 1, the second pass goes out on wire, to connect capacitor C 2, Third Road is drawn and on wire, is connected that capacitor C 3 is rear to be connect altogether as voltage type active reacance generator output access electrical network, by inductance and electric capacity, form LCL filter.On voltage sample plate, current sample plate output, have access to respectively anti-aliasing digital filter.
Claims (3)
1. a reactive power adjusting device, it is characterized in that: comprise voltage type active reacance generator, voltage sample plate, current sample plate, sampling modulate circuit, DSP control circuit, isolated drive circuit, in described voltage type active reacance generator, between outlet side inductance, access electric capacity and form LCL filter, described current sample plate, sample the respectively reactive voltage of active reacance generator outlet side of voltage sample plate, reactive current signal, reactive voltage, reactive current signal is sent into respectively DSP control circuit and is calculated and process after the conditioning of over-sampling modulate circuit, DSP control circuit is controlled switching tube in voltage type active reacance generator according to the result of calculating and process in PWM mode break-make by isolated drive circuit is to carry out copped wave, reactive voltage after copped wave is connected to the grid through the LCL filter building in voltage type active reacance generator.
2. a kind of reactive power adjusting device according to claim 1, it is characterized in that: described voltage type active reacance generator comprises the switching tube series arm that three tunnels are parallel with one another, electric capacity with three-way switch pipe string connection branch circuit parallel connection, each switching tube series arm is in series by two switching tubes, in each switching tube series arm, between two switching tubes, there is respectively output lead to draw, after being in series with respectively two inductance on three road output leads, connect altogether again, on each output lead, between two inductance, there is respectively wire to draw, three pass connect altogether as voltage type active reacance generator output access electrical network after going out to connect respectively on wire electric capacity, by inductance and electric capacity, form LCL filter.
3. a kind of reactive power adjusting device according to claim 1, is characterized in that: on voltage sample plate, current sample plate output, have access to respectively anti-aliasing digital filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646672.0U CN203536964U (en) | 2013-10-18 | 2013-10-18 | Static VAR (volt-ampere reactive) generator (SVG) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320646672.0U CN203536964U (en) | 2013-10-18 | 2013-10-18 | Static VAR (volt-ampere reactive) generator (SVG) |
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| Publication Number | Publication Date |
|---|---|
| CN203536964U true CN203536964U (en) | 2014-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320646672.0U Expired - Fee Related CN203536964U (en) | 2013-10-18 | 2013-10-18 | Static VAR (volt-ampere reactive) generator (SVG) |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545822A (en) * | 2013-10-18 | 2014-01-29 | 海特尔机电工程技术（马鞍山）有限公司 | Reactive power adjustment device |
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2013
- 2013-10-18 CN CN201320646672.0U patent/CN203536964U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103545822A (en) * | 2013-10-18 | 2014-01-29 | 海特尔机电工程技术（马鞍山）有限公司 | Reactive power adjustment device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A kind of reactive power adjusting device Effective date of registration: 20171212 Granted publication date: 20140409 Pledgee: Huizhou bank Limited by Share Ltd Ma'anshan Garden Branch Pledgor: Haiteer Electrical Engineering Technology (Ma'anshan) Co., Ltd. Registration number: 2017340000407 |
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| 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: 20140409 Termination date: 20201018 |