CN205039544U - Active electric power filter - Google Patents
Active electric power filter Download PDFInfo
- Publication number
- CN205039544U CN205039544U CN201520795291.8U CN201520795291U CN205039544U CN 205039544 U CN205039544 U CN 205039544U CN 201520795291 U CN201520795291 U CN 201520795291U CN 205039544 U CN205039544 U CN 205039544U
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- China
- Prior art keywords
- filter
- module
- protection mechanism
- circuit
- active power
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- Expired - Fee Related
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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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- Supply And Distribution Of Alternating Current (AREA)
Abstract
The utility model relates to a wave filter field, the utility model aims at providing an active electric power filter, the technical scheme who adopts is: an active electric power filter, includes pressure regulating protection mechanism and at least one filtering compensation mechanism on pressure regulating protection mechanism of connecting in parallel, pressure regulating protection mechanism connects on the circuit, and including the power, the power is the junction current signal acquisition module in proper order, operation module, and drive module and three -phase voltage regulating module, electric current signal acquisition module is erect on three -phase circuit, drive module connects air switch and alarm, filtering compensation mechanism is including the passive filter and the active electric power filter that establish ties, the passive filter connecting circuit, the utility model discloses can realize just having self -protection and damaging alarming function high power load's compensation.
Description
Technical field
The utility model belongs to electric automatization field, is specifically related to a kind of filter.
Background technology
Along with the development of power system technology, the requirement of new high-tech enterprise to the quality of power supply improves gradually, simultaneously, the user of a large amount of nonlinear-load is there is in electrical network, it is mainly throughout industrial circle, field of traffic, IT industry field and require the fields such as strict conference and exhibition center, commercial mansion to the quality of power supply, and along with the increase of a large amount of nonlinear-load power consumption equipment, the harmonic content injecting electrical network also increases thereupon, thus cause the wave distortion of voltage and electric current.Traditional harmonics restraint and reactive-load compensation method are the low-pass filtering branch roads of capacitor and reactor composition, absorb harmonic current, but filter effect is subject to the impact of system impedance and the device accuracy of manufacture.
Active power filter is a kind of novel electric power electric device for dynamic harmonic wave, compared with passive filter, have fast response time, controllability high, can tracing compensation each harmonic, dynamically produce the reactive power that meet required change, suppress voltage fluctuation and flicker.Meanwhile, active power filter also possesses characteristic does not affect by system impedance, without the outstanding feature such as danger of Harmonics amplification, because becoming the important means of electric filtering and reactive power compensation.Active filter of the prior art is used for compensating mid power and following load, and for the nonlinear load of high-power rate, making high broadband corresponding thereto, Large Copacity active filter are very difficult.Therefore, existing traditional parallel connection mixed type APF can not be used for the harmonic wave that suppresses high power nonlinear load to produce.
Summary of the invention
The purpose of this utility model is to provide and a kind ofly can be used for the Active Power Filter-APF of high power load with self-protection function.
For achieving the above object, the technical scheme that the utility model adopts is: a kind of Active Power Filter-APF, comprises pressure regulation protection mechanism and at least one is connected in parallel on filtering compensation mechanism on pressure regulation protection mechanism, and described pressure regulation protection mechanism is connected on circuit; Described pressure regulation protection mechanism comprises power supply, power supply connects current signal collection module successively, computing module, driver module and three-phase voltage regulation module, described current signal collection module is erected on three-phase circuit, and described driver module connects air switch and alarm by controller; Described filtering compensation mechanism comprises passive filter and the Active Power Filter-APF of series connection, described passive filter connecting circuit.
Preferred: described passive filter is made up of three single tuned filter parallel connections.
Preferred: described three single tuned filters are respectively the single tuned filter of 5 times, 7 times and 11 times characteristic harmonics.
Preferred: described alarm is buzzer or warning light.
The utility model has following beneficial effect: the utility model adds pressure regulation protection mechanism; turn down voltage; that filter can compensate high power load, and according to current conditions telemetry circuit, can protecting filter and notify staff in time when filter fault.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of pressure regulation protection mechanism.
Embodiment
A kind of Active Power Filter-APF as shown in Figure 1; comprise pressure regulation protection mechanism 5 and at least one is connected in parallel on filtering compensation mechanism on pressure regulation protection mechanism 5; the effect of step-down can be realized by pressure regulation protection mechanism 5; the high pressure of high power load 2 is reduced; also electric current can be caused to increase simultaneously; so will shunt according to actual conditions multiple filtering compensation mechanism in parallel, prevent electric current excessive damage filtering compensation mechanism, realize with this object compensating high power load 2.
In order to realize the object to the protection of filter place circuit voltage regulation; described pressure regulation protection mechanism 5 is connected in parallel on circuit; pressure regulation protection mechanism 5 comprises power supply 54; power supply 54 connects current signal collection module 51 successively; computing module 52; driver module 53 and three-phase voltage regulation module 55, described current signal collection module 51 is erected on three-phase circuit.By the current signal of circuit, computing module 52 can calculate to be needed to adjust how much voltage, three-phase voltage regulation module 55 is driven to reduce voltage to realize the compensation to high power load 2 by driver module 53, telemetry circuit simultaneously, the curent change caused if there is filter damages, signal can be sent to controller 56 by described driver module 53, make air switch 3 open circuit, and warned by alarm 4, described alarm 4 is buzzer or warning light, allow staff pinpoint the problems as early as possible and to solve, prevent harmonic wave to the further damage of circuit.
Described filtering compensation mechanism comprises passive filter 6 and the Active Power Filter-APF 7 of series connection, described passive filter 6 connecting circuit.And described passive filter 6 is made up of the single tuned filter parallel connection of 5 times, 7 times and 11 times characteristic harmonics.By passive filter 6, modal 5 times, 7 times and 11 characteristic harmonics are processed, and then carry out further filtering by Active Power Filter-APF 7, reduce the burden of Active Power Filter-APF 7, realize the object of filtering harmonic wave better.
Claims (4)
1. an Active Power Filter-APF, is characterized in that: comprise pressure regulation protection mechanism (5) and at least one is connected in parallel on filtering compensation mechanism on pressure regulation protection mechanism (5); Described pressure regulation protection mechanism (5) is connected on circuit, pressure regulation protection mechanism (5) comprises power supply (54), power supply (54) connects current signal collection module (51) successively, computing module (52), driver module (53) and three-phase voltage regulation module (55), described current signal collection module (51) is erected on three-phase circuit, and described driver module (53) connects air switch (3) and alarm (4) by controller (56); Described filtering compensation mechanism comprises passive filter (6) and the Active Power Filter-APF (7) of series connection, described passive filter (6) connecting circuit.
2. Active Power Filter-APF according to claim 1, is characterized in that: described passive filter (6) is made up of three single tuned filter parallel connections.
3. Active Power Filter-APF according to claim 2, is characterized in that: described three single tuned filters are respectively the single tuned filter of 5 times, 7 times and 11 times characteristic harmonics.
4. the Active Power Filter-APF according to claim 1 or 3, is characterized in that: described alarm (4) is buzzer or warning light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795291.8U CN205039544U (en) | 2015-10-15 | 2015-10-15 | Active electric power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520795291.8U CN205039544U (en) | 2015-10-15 | 2015-10-15 | Active electric power filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205039544U true CN205039544U (en) | 2016-02-17 |
Family
ID=55298415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520795291.8U Expired - Fee Related CN205039544U (en) | 2015-10-15 | 2015-10-15 | Active electric power filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205039544U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633967A (en) * | 2016-03-28 | 2016-06-01 | 成都天进仪器有限公司 | Safe and reliable active power filter of smart power grid |
| CN105743090A (en) * | 2016-03-28 | 2016-07-06 | 成都天进仪器有限公司 | Active power filter of intelligent power grid for compensation of high-power load |
| CN107370166A (en) * | 2017-09-08 | 2017-11-21 | 广西邦世电气有限公司 | A kind of power balance device |
-
2015
- 2015-10-15 CN CN201520795291.8U patent/CN205039544U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105633967A (en) * | 2016-03-28 | 2016-06-01 | 成都天进仪器有限公司 | Safe and reliable active power filter of smart power grid |
| CN105743090A (en) * | 2016-03-28 | 2016-07-06 | 成都天进仪器有限公司 | Active power filter of intelligent power grid for compensation of high-power load |
| CN107370166A (en) * | 2017-09-08 | 2017-11-21 | 广西邦世电气有限公司 | A kind of power balance device |
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Legal Events
| 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: 20160217 Termination date: 20191015 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |