CN205544277U - Safe and reliable's smart power grids active power filter - Google Patents
Safe and reliable's smart power grids active power filter Download PDFInfo
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- CN205544277U CN205544277U CN201620241025.5U CN201620241025U CN205544277U CN 205544277 U CN205544277 U CN 205544277U CN 201620241025 U CN201620241025 U CN 201620241025U CN 205544277 U CN205544277 U CN 205544277U
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- apf
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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 discloses a safe and reliable's smart power grids active power filter, including external shell (1) and installation and external shell (1) inside wave filter body (8), wave filter body (8) including pressure regulating protection mechanism (85) and at least one filtering compensation mechanism on pressure regulating protection mechanism (85) of connecting in parallel, pressure regulating protection mechanism (85) are connected on the circuit, and pressure regulating protection mechanism (85) include power (854), and power (854) are junction current signal acquisition module (851), operation module (852), drive module (853) and three -phase voltage regulation module (855) in proper order, filtering compensation mechanism is including passive filter (86) and active power filter (87) of establishing ties, passive filter (86) connecting circuit. The utility model discloses it is that the wave filter can compensate high power load to have increased pressure regulating protection mechanism, turned down voltage, and according to electric current condition monitoring circuit, can just in time inform the staff by protecting filter when the wave filter trouble.
Description
Technical field
This utility model relates to a kind of safe and reliable intelligent grid Active Power Filter-APF.
Background technology
Active Power Filter-APF (APF:Active power filter) is a kind of for dynamic harmonic wave, the novel electric power electric device of compensating reactive power, it can carry out quick tracing compensation to the harmonic wave of different size and frequency, the most active, it is relative to passive LC filter, can only be for the harmonic wave of Passive intake fixed frequency and size, APF can be by sampling load current carry out each harmonic and idle separation, control and actively export the size of electric current, frequency and phase place, and quickly respond, phase induced current in payment load, achieve dynamic tracking to compensate, and not only can mend harmonic wave but also mend idle and uneven.Controllable power semiconductor is utilized to inject the electric current contrary with harmonic source current amplitude equal phase to electrical network, the total harmonic current making power supply is zero purpose reaching real-Time Compensation harmonic current, and existing wave filter is made up of instruction current computing circuit and compensation two major parts of current occuring circuit.Analog current signal is also converted to digital signal and sends into high speed numerical processor DSP and process signal by electric current in the real-time monitoring wire of instruction current computing circuit, is separated by harmonic wave first-harmonic and sends driving pulse with pulse-modulated signal form and drive IGBT power model growth mains by harmonics current amplitude to compensating current occuring circuit.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, it is provided that a kind of safe and reliable intelligent grid Active Power Filter-APF.
The purpose of this utility model is achieved through the following technical solutions: a kind of safe and reliable intelligent grid Active Power Filter-APF, including the filtering body within external shell and installation and external shell, described external shell is provided with multiple through hole, on the downside of the most externally-located housing for air inlet, on the upside of externally-located housing for gas outlet, the outside of each through hole is provided with rainhat, and the bottommost of through hole is higher than bottom the rainhat of its correspondence；Described filtering body includes pressure regulation protection mechanism and at least one filtering compensation mechanism being connected in parallel on pressure regulation protection mechanism；Described pressure regulation protection mechanism is connected on circuit; pressure regulation protection mechanism includes power supply; power supply is sequentially connected with current signal collection module; computing module; drive module and three-phase voltage regulation module; described current signal collection module is erected on three-phase circuit, and described driving module connects air switch and alarm by controller；Described filtering compensation mechanism includes passive filter and the Active Power Filter-APF of series connection, and described passive filter connects circuit.
Described air inlet and gas outlet are mounted on dust-proof cushion.
Described air inlet and/or gas outlet are provided with fan.
It is also equipped with electric heater in described external shell.
Being also equipped with temperature sensor in described external shell, temperature sensor is connected to automatic controller, and the output signal of automatic controller controls fan and/or the duty of electric heater.
Described passive filter is made up of three single tuned filter parallel connections.
Described three single tuned filters are respectively the single tuned filter of 5 times, 7 times and 11 times characteristic harmonics.
Described alarm is buzzer or warning light.
The beneficial effects of the utility model are:
(1) this utility model is provided with multiple through hole on the sidewall of housing, multiple through holes are generally divided into two regions, and a region is positioned at above the sidewall of housing, near the position of case top, the through hole in this region is as gas outlet, for discharging the high-temperature gas in housing；Another region is positioned at below the sidewall of housing, and this region is positioned at the bottom of housing, and the through hole in this region is as air inlet；Housing is provided with the rainhat corresponding with through hole, rainhat entirety is curved, its top is connected on housing, its lower end and housing at intervals and enclose formation pore, this hole is horizontally oriented, the rainhat of top plays rainproof effect, rainwater is avoided to enter enclosure interior from through hole, and, the level of through hole position, the end is disposed above the rainhat position, the end of its correspondence, rainwater can be avoided to enter in housing along the sidewall of housing, waterproof effect is played while ventilating, improve the practicality of Cabinet, the problem solving aerofluxus.
(2) this utility model Active Power Filter-APF, installs dust-proof cushion in the region of air inlet and gas outlet, and the preferred structure of dust-proof cushion is one block of integrally-built foam-rubber cushion, and it is positioned at air inlet and gas outlet, plays the purpose preventing dust；The fan installed at air inlet is supply fan, install in gas outlet for exhaust fan, air speed in cabinet body can be improved by the installation of supply fan and exhaust fan, thus improve heat exchange efficiency, in order to resist severe cold, adapt to the multiformity of outdoor work environment, electric heater can be installed in cabinet body, electric heater can be multiple, different positions can also be distributed in, when outside air temperature is too low, it is unfavorable for when electronic component works, can be heated by electric heater, simultaneously close off fan, make the atmosphere draught-free within cabinet body, thus keep the most suitable temperature, be conducive to improving the life-span of electronic component.
(3) this utility model Active Power Filter-APF, using automatic controller as control core, one or more temperature sensor is installed in cabinet body, temperature sensor gathers the intrinsic temperature data of rack and delivers to automatic controller, automatic controller compares calculating to temperature data, and rotate or the control signal of electric heater work as controlling fan, the rotating speed etc. of the quantity of fan work, fan can be controlled, it is also possible to control the heating power of electric heater, heat time heating time etc. parameter according to the value of temperature.
(4) this utility model adds pressure regulation protection mechanism, turns down voltage, is that wave filter can compensate for high power load, and according to current conditions telemetry circuit, can notify staff in time with protecting filter and when wave filter fault.
Accompanying drawing explanation
Fig. 1 is this utility model external shell schematic diagram；
Fig. 2 is this utility model through hole cross-sectional structure schematic diagram；
Fig. 3 is filtering body structural representation；
Fig. 4 is pressure regulation protection mechanism structural representation；
In figure, 1-housing, 2-cabinet door, 3-through hole; 4-rainhat, 5-fan, 6-dust-proof cushion; 7-electric heater, 8-filtering body, 82-loads; 83-air switch, 84-alarm, 85-pressure regulation protection mechanism; 851-current signal collection module, 852-computing module, 853-drives module; 854-power supply, 855-three-phase voltage regulation module, 856-controller.
Detailed description of the invention
The technical solution of the utility model is described in further detail below in conjunction with the accompanying drawings:
As depicted in figs. 1 and 2, a kind of safe and reliable intelligent grid Active Power Filter-APF, including the filtering body 8 within external shell 1 and installation and external shell 1, described external shell 1 is provided with multiple through hole 3, on the downside of the most externally-located housing 1 for air inlet, on the upside of externally-located housing 1 for gas outlet, the outside of each through hole 3 is provided with rainhat 4, the bottommost of through hole 3 higher than the rainhat 4 of its correspondence bottom.Described air inlet and gas outlet are mounted on dust-proof cushion 6.Described air inlet and/or gas outlet are provided with fan 5.It is also equipped with electric heater 7 in described external shell 1.Being also equipped with temperature sensor in described external shell 1, temperature sensor is connected to automatic controller, and the output signal of automatic controller controls fan 5 and/or the duty of electric heater 7.
Specifically, external shell 1 entirety is cuboid, it is configured with a cabinet door 2, filtering body 8 is installed in external shell 1, it is provided with through hole 3 in the both sides of external shell 1, through hole 3 is distributed in the upper and lower of external shell 1 sidewall, in lower section for air inlet, on top for gas outlet, air inlet and gas outlet are mounted on dust-proof cushion 6 and fan 5, dust-proof cushion 6 uses the sponge of monoblock to make and between fan 5 and cabinet body 1, and the fan 5 that wherein air inlet is installed be supply fan, in gas outlet installation for exhaust fan；External shell 1 is provided with the rainhat 4 corresponding with through hole 3, rainhat 4 is overall curved, its top is connected on external shell 1, its lower end and external shell 1 at intervals and enclose formation pore, this hole is horizontally oriented, the rainhat 4 of top plays rainproof effect, it is to avoid rainwater enters inside cabinet body from through hole 3, and the level of through hole 3 position, the end is disposed above rainhat 4 position, the end of its correspondence；Multiple electric heater 7 is installed in housing 1, it is also equipped with automatic controller, temperature sensor and alarm, automatic controller can use circuit board to realize, PLC can also be used to realize, temperature sensor controls fan 5 and the control signal of electric heater 7 work the most, temperature sensor gathers the air themperature in external shell 1, and it is transferred to automatic controller, automatic controller compares calculating according to parameter set in advance, when a certain situation during temperature is setting value, fan and electric heater are in duty set in advance.
As shown in Figure 3 and Figure 4, described filtering body 8 includes pressure regulation protection mechanism 85 and at least one filtering compensation mechanism being connected in parallel on pressure regulation protection mechanism 85；The effect of blood pressure lowering can be realized by pressure regulation protection mechanism 85; the high pressure of high power load 82 is reduced; also result in electric current to increase simultaneously; so to shunt according to practical situation multiple filtering compensation mechanisms in parallel; prevent electric current excessive damage filtering compensation mechanism, the purpose realizing compensating high power load 82 with this.
In order to realize the purpose to the protection of wave filter place circuit voltage regulation; described pressure regulation protection mechanism 85 is connected in parallel on circuit; pressure regulation protection mechanism 85 includes power supply 854; power supply 854 is sequentially connected with current signal collection module 851, computing module 852, drives module 853 and three-phase voltage regulation module 855, and described current signal collection module 851 is erected on three-phase circuit.By the current signal of circuit, computing module 852 can calculate to be needed to adjust how much voltage, by driving module 853 to drive three-phase voltage regulation module 855 to reduce voltage to realize the compensation to high power load 82, telemetry circuit simultaneously, the curent change damaged if there is wave filter and cause, signal can be sent to controller 856 by described driving module 853, make air switch 83 disconnecting circuit, and warned by alarm 84, described alarm 84 is buzzer or warning light, staff is allowed to pinpoint the problems as early as possible and to solve, prevent the harmonic wave further damage to circuit.In the present embodiment, computing module and the computing module that can use Application No. 201520795291.8 calculate.Prior art i.e. can be used to realize, be not required to software is improved.
Described filtering compensation mechanism includes passive filter 86 and the Active Power Filter-APF 87 of series connection, and described passive filter 86 connects circuit.And described passive filter 86 is made up of the single tuned filter parallel connection of 5 times, 7 times and 11 times characteristic harmonics.By passive filter 86, modal 5 times, 7 times and 11 characteristic harmonics are processed, filtered further by Active Power Filter-APF 87 the most again, reduce the burden of Active Power Filter-APF 87, the purpose that filter harmonic wave is better achieved.
Claims (8)
1. a safe and reliable intelligent grid Active Power Filter-APF, including the filtering body (8) that external shell (1) and installation are internal with external shell (1), it is characterized in that: on described external shell (1), be provided with multiple through hole (3), the most externally-located housing (1) downside for air inlet, externally-located housing (1) upside for gas outlet, be provided with rainhat (4) in the outside of each through hole (3), the bottommost of through hole (3) is higher than rainhat (4) bottom of its correspondence；Described filtering body (8) include pressure regulation protection mechanism (85) and at least one be connected in parallel on the filtering compensation mechanism on pressure regulation protection mechanism (85)；Described pressure regulation protection mechanism (85) is connected on circuit; pressure regulation protection mechanism (85) includes power supply (854); power supply (854) is sequentially connected with current signal collection module (851), computing module (852), drives module (853) and three-phase voltage regulation module (855); described current signal collection module (851) is erected on three-phase circuit, and described driving module (853) connects air switch (83) and alarm (84) by controller (856)；Described filtering compensation mechanism includes passive filter (86) and the Active Power Filter-APF (87) of series connection, and described passive filter (86) connects circuit.
A kind of safe and reliable intelligent grid Active Power Filter-APF the most according to claim 1, it is characterised in that: on described air inlet and gas outlet, it is mounted on dust-proof cushion (6).
A kind of safe and reliable intelligent grid Active Power Filter-APF the most according to claim 2, it is characterised in that: described air inlet and/
Or fan (5) is installed on gas outlet.
A kind of safe and reliable intelligent grid Active Power Filter-APF the most as claimed in any of claims 1 to 3, it is characterised in that: in described external shell (1), it is also equipped with electric heater (7).
A kind of safe and reliable intelligent grid Active Power Filter-APF the most according to claim 4, it is characterized in that: in described external shell (1), be also equipped with temperature sensor, temperature sensor is connected to automatic controller, and the output signal of automatic controller controls fan (5) and/or the duty of electric heater (7).
A kind of safe and reliable intelligent grid Active Power Filter-APF the most according to claim 1, it is characterised in that: described passive filter (86) is made up of three single tuned filter parallel connections.
A kind of safe and reliable intelligent grid Active Power Filter-APF the most according to claim 6, it is characterised in that: described three single tuned filters are respectively the single tuned filter of 5 times, 7 times and 11 times characteristic harmonics.
8. according to a kind of safe and reliable intelligent grid Active Power Filter-APF described in claim 1 or 7, it is characterised in that: described alarm (84) is buzzer or warning light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241025.5U CN205544277U (en) | 2016-03-28 | 2016-03-28 | Safe and reliable's smart power grids active power filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620241025.5U CN205544277U (en) | 2016-03-28 | 2016-03-28 | Safe and reliable's smart power grids active power filter |
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| Publication Number | Publication Date |
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| CN205544277U true CN205544277U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620241025.5U Expired - Fee Related CN205544277U (en) | 2016-03-28 | 2016-03-28 | Safe and reliable's smart power grids active power filter |
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Cited By (1)
| 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 |
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2016
- 2016-03-28 CN CN201620241025.5U patent/CN205544277U/en not_active Expired - Fee Related
Cited By (1)
| 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 |
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| 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: 20160831 Termination date: 20170328 |
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| CF01 | Termination of patent right due to non-payment of annual fee |