CN203135440U - Three-phase four-wire active power filtering cabinet - Google Patents
Three-phase four-wire active power filtering cabinet Download PDFInfo
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- CN203135440U CN203135440U CN2013201338603U CN201320133860U CN203135440U CN 203135440 U CN203135440 U CN 203135440U CN 2013201338603 U CN2013201338603 U CN 2013201338603U CN 201320133860 U CN201320133860 U CN 201320133860U CN 203135440 U CN203135440 U CN 203135440U
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- active power
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- switching tube
- apf
- power filter
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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
- Y02E40/20—Active power filtering [APF]
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Abstract
The utility model provides a three-phase four-wire active power filtering cabinet which comprises a standard distribution cabinet, active power filters, a circuit breaker and a current transformer. The circuit breaker is connected with an input end of the current transformer. An output end of the current transformer is connected with input ends of the active power filters. There are three active power filters. Each of the active power filters comprises an inductor, a switch tube and a filter capacitor. A plurality of switch tube groups in parallel connection are employed by the active power filters. According to the switch tube groups, a collector of one switch tube is in series connection with an emitter of another switch tube. The emitter and collector of the switch tube are in parallel connection with a clamping diode. According to the three-phase four-wire active power filtering cabinet, through employing the diode clamped three-level technology, in the power supply process of a power grid, when a load side generates harmonics and reactive current, that the current at a system side has no harmonic wave and reactive current is ensured, other key sensitive equipment of a user can be in normal running in an electrical environment outside the approximate uninterrupted electrical environment, and the power grid is not polluted.
Description
Technical field
The utility model relates to a kind of active filter, is specifically related to a kind of three-phase four-wire active filtering cabinet.
Background technology
Active filter The field Active Power Filter-APF (APF) is a kind of for the novel electric power electric device that dynamically suppresses harmonic wave, compensating reactive power, it can compensate harmonic wave and the idle of variation that big or small and frequency all change, why be called active, as the term suggests this device need provide power supply, its application can overcome that traditional harmonic wave such as LC filter suppresses and the shortcoming of reactive-load compensation method (traditional can only fixed compensation), realize dynamic tracking compensation, and can not only mend harmonic wave but also mend idle.
The diode clamping tri-level technology is applied to the Active Power Filter-APF field, and the lot of domestic and international document has and relates to, and domestic and international many experts and scholars compare deep research to this, also proposed a lot of new algorithms.But three level active power filters do not move towards market from the laboratory all the time.Tracing it to its cause, might be that technology is not mature enough, and control algolithm is too complicated, and the application cost height also may be that business circles are paid little attention to this, does not recognize the advantage of this technology as yet.
The utility model content
At above-mentioned deficiency, the purpose of this utility model provides a kind of three-phase four-wire active filtering cabinet, and it adopts the diode clamping tri-level technology, and it is used and the electric power facility field.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of three-phase four-wire active filtering cabinet, it comprises a standard distributed cabinet, be arranged on the Active Power Filter-APF of power distribution cabinet inside, circuit breaker and current transformer, described circuit breaker is connected with the input of current transformer, the output of described current transformer is connected with the input of Active Power Filter-APF, described Active Power Filter-APF is 3, respectively with the A phase, the B phase, C phase input port connects, described Active Power Filter-APF comprises inductance, switching tube and filter capacitor, one end of described inductance is connected with an end of switching tube, the other end of described switching tube is connected with filter capacitor, described Active Power Filter-APF adopts the switching tube group of a plurality of parallel connections, described switching tube group adopts the collector electrode of a switching tube to connect with the emitter of another switching tube, the emitter and collector two ends of described switching tube clamping diode in parallel.
Capacitor C ra and inductance L ra ground connection after the series connection in parallel of the input of described Active Power Filter-APF.
Capacitor C fa and resistance R _ f a ground connection after the series connection in parallel of the input of described Active Power Filter-APF.
The input series connection fuse FUa of described Active Power Filter-APF.
The two ends shunt capacitance of described switching tube group.
Described filter capacitor comprises the electrochemical capacitor of a plurality of parallel connections.
Described power distribution cabinet is provided with LCDs and indicator light.
The beneficial effects of the utility model are, by adopting the diode clamping tri-level technology, in the mains supply process when load-side produces harmonic wave and reactive current, the electric current that guarantees system side does not have harmonic wave and reactive current, make other crucial sensitive equipments of user be able to normally operation in approximate interference-free electric circumstance, and can not pollute electrical network.
Description of drawings
Fig. 1 is electrical principle schematic diagram of the present utility model.
Fig. 2 is the circuit theory schematic diagram of Active Power Filter-APF of the present utility model.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described further:
Referring to Fig. 1 and Fig. 2, the utility model comprises a standard distributed cabinet, be arranged on the Active Power Filter-APF 2 of power distribution cabinet inside, circuit breaker 1 and current transformer 5, described circuit breaker 1 is connected with the input of current transformer 5, the output of described current transformer 5 is connected with the input of Active Power Filter-APF 2, described Active Power Filter-APF 2 is 3, respectively with the A phase, the B phase, C phase input port connects, described Active Power Filter-APF 2 comprises inductance, switching tube and filter capacitor, one end of described inductance is connected with an end of switching tube, the other end of described switching tube is connected with filter capacitor, described Active Power Filter-APF adopts the switching tube group of a plurality of parallel connections, described switching tube group adopts the collector electrode of a switching tube to connect with the emitter of another switching tube, the emitter and collector two ends of described switching tube clamping diode in parallel.
Capacitor C ra and inductance L ra ground connection after the series connection in parallel of the input of described Active Power Filter-APF 2, capacitor C fa and resistance R _ f a ground connection after the series connection in parallel of the input of described Active Power Filter-APF 2 are respectively applied to rectification, filtering, make input voltage level and smooth.
The input series connection fuse FUa of described Active Power Filter-APF 2 is for the protection of active filter.
The two ends shunt capacitance of described switching tube group, described filter capacitor comprises the electrochemical capacitor of a plurality of parallel connections, adopts a plurality of electric capacity parallel connections, improves filter effect.
Described power distribution cabinet is provided with LCDs and indicator light, is used for data demonstration and work indication.
Active Power Filter-APF 2 is 3; respectively with the A phase; the B phase; C is connected; its lightning arrester connected in parallel FV-A of input elder generation ground connection; be used for avoiding circuit to be subjected to lightning overvoltage; switching overvoltage; Frequency Transient Overvoltage is impacted and is damaged; its input is divided into two-way; be connected with circuit breaker Q F2 with circuit breaker Q F1 respectively; circuit breaker Q F2 is series load K switch M1 successively; connect fuse FUa behind the resistance R xa; circuit breaker Q F1 connects fuse FUa; fuse FUa is used for shielding; the other end of fuse FUa is capacitor C ra and inductance L ra and the capacitor C fa that is connected in series and the resistance R _ f a earth connection that is connected in series in parallel respectively; described ground wire connect respectively circuit breaker Q F1 and fuse FUn; fuse FUa and fuse FUn are connected two inputs of inductance L fa respectively; its output connects the central point of switching tube group SA1 and switching tube group SA2 respectively; described switching tube group is made of the emitter of a switching tube and the collector electrode series connection of another switching tube; two switching tube groups do not have the collector electrode of connection in parallel respectively with emitter; electrochemical capacitor CD12 in parallel successively then; resistance R D2; electrochemical capacitor CD11 and resistance R D1; the two ends parallel resistance CD21 of described switching tube group SA1; the two ends of switching tube group SA2 CD22 in parallel; respectively the switching tube group is carried out filtered voltage, guarantee the voltage smooth starting of switching tube group or close.
By cooperating of current transformer 3 and Active Power Filter-APF 2, Active Power Filter-APF 2 is in parallel with harmonic source, follow the tracks of the harmonic current that the harmonic source load produces by real-time detection, generating with it the electric current of opposite sign but equal magnitude is fast offset, thereby harmonic carcellation avoids system voltage, current waveform to distort, and the utlity model has adaptation function, can compensate frequency and the big or small harmonic wave that all changes, target compensation be had the response that is exceedingly fast.In the mains supply process, when load-side produces harmonic wave and reactive current, guarantee that the electric current of system side does not have harmonic wave and reactive current, make other crucial sensitive equipments of user be able to normally operation in approximate interference-free electric circumstance, and can not pollute electrical network.
Embodiment should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.
Claims (7)
1. three-phase four-wire active filtering cabinet, it comprises a standard distributed cabinet, be arranged on the Active Power Filter-APF (2) of power distribution cabinet inside, circuit breaker (1) and current transformer (5), described circuit breaker (1) is connected with the input of current transformer (5), the output of described current transformer (5) is connected with the input of Active Power Filter-APF (2), it is characterized in that: described Active Power Filter-APF (2) is 3, respectively with the A phase, the B phase, C phase input port connects, described Active Power Filter-APF (2) comprises inductance, switching tube and filter capacitor, one end of described inductance is connected with an end of switching tube, the other end of described switching tube is connected with filter capacitor, described Active Power Filter-APF adopts the switching tube group of a plurality of parallel connections, described switching tube group adopts the collector electrode of a switching tube to connect with the emitter of another switching tube, the emitter and collector two ends of described switching tube clamping diode in parallel.
2. three-phase four-wire active filtering cabinet according to claim 1 is characterized in that, capacitor C ra and inductance L ra ground connection after the series connection in parallel of the input of described Active Power Filter-APF (2).
3. three-phase four-wire active filtering cabinet according to claim 1 is characterized in that, capacitor C fa and resistance R _ f a ground connection after the series connection in parallel of the input of described Active Power Filter-APF (2).
4. three-phase four-wire active filtering cabinet according to claim 1 is characterized in that, the input series connection fuse FUa of described Active Power Filter-APF (2).
5. three-phase four-wire active filtering cabinet according to claim 1 is characterized in that, the two ends shunt capacitance of described switching tube group.
6. three-phase four-wire active filtering cabinet according to claim 1 is characterized in that described filter capacitor comprises the electrochemical capacitor of a plurality of parallel connections.
7. three-phase four-wire active filtering cabinet according to claim 1 is characterized in that described power distribution cabinet is provided with LCDs and indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201338603U CN203135440U (en) | 2013-03-22 | 2013-03-22 | Three-phase four-wire active power filtering cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201338603U CN203135440U (en) | 2013-03-22 | 2013-03-22 | Three-phase four-wire active power filtering cabinet |
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| Publication Number | Publication Date |
|---|---|
| CN203135440U true CN203135440U (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201338603U Expired - Fee Related CN203135440U (en) | 2013-03-22 | 2013-03-22 | Three-phase four-wire active power filtering cabinet |
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| Country | Link |
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| CN (1) | CN203135440U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113496096A (en) * | 2021-09-07 | 2021-10-12 | 中国南方电网有限责任公司超高压输电公司广州局 | Lightning arrester transient voltage acquisition method and device, computer equipment and storage medium |
-
2013
- 2013-03-22 CN CN2013201338603U patent/CN203135440U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113496096A (en) * | 2021-09-07 | 2021-10-12 | 中国南方电网有限责任公司超高压输电公司广州局 | Lightning arrester transient voltage acquisition method and device, computer equipment and storage medium |
| CN113496096B (en) * | 2021-09-07 | 2022-04-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Lightning arrester transient voltage acquisition method and device, computer equipment and storage medium |
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| 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 |
Granted publication date: 20130814 Termination date: 20150322 |
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| EXPY | Termination of patent right or utility model |