CN207426699U - A kind of active power filter system based on collecting and distributing layout - Google Patents
A kind of active power filter system based on collecting and distributing layout Download PDFInfo
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- CN207426699U CN207426699U CN201721500466.3U CN201721500466U CN207426699U CN 207426699 U CN207426699 U CN 207426699U CN 201721500466 U CN201721500466 U CN 201721500466U CN 207426699 U CN207426699 U CN 207426699U
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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 is related to electric system to filter field, and in particular to a kind of active power filter system based on collecting and distributing layout.The utility model main filter and divides filter by setting, and realizes the comprehensively monitoring to entire power grid power quality, comprehensive treatment, while each power supply branch is detected, is controlled and task is distributed.The utility model solve thes problems, such as that regulation effect is poor when a variety of power qualities coexist, convenient for centralized management, main filter sets dual controller to carry out rational task scheduling simultaneously, has disperseed the processing pressure of controller, has added the stability and reliability of system.
Description
Technical field
The utility model is related to electric system to filter field, and in particular to a kind of active power filtering based on collecting and distributing layout
System.
Background technology
With the development of industrial technology, the increase of nonlinear-load in electric system, various nonlinear loads generate humorous
Ripple can not only reduce transmission and the utilization ratio of network system, jeopardize the safe operation of power grid, can also influence each electrical in power grid
The normal work of equipment.Active electric filter device has been widely used as a kind of effective means of harmonic wave control, and has taken
Obtained preferable effect.But for the distributings power supply occasion such as residential area, market, school, office space, there are multiple branch circuits
During nonlinear-load, since respective circuit structure is different with load, cause the harmonic wave type generated that will be very different, and
It influences each other between each branch, preferable regulation effect can not be reached using traditional centralized compensation pattern.
Utility model content
The purpose of this utility model is to provide a kind of active power filter system based on collecting and distributing layout, existing to solve
Technology cannot effectively handle the problem of decentralized power-supply occasion Multi-harmonic Sources coexist.
To achieve the above object, the embodiment of the utility model includes a kind of active power filtering system based on collecting and distributing layout
System, it is described including the main filter being arranged on power bus and the filter that divides for being separately positioned on each power supply branch road
Main filter and divide filter communication connection；The main filter includes the master controller of communication connection and main power list
Member；Described point of filter includes the dispersion layer controller and dispersion layer power cell of communication connection.
Further, the master controller includes the first master controller and the second master controller of communication connection, and described the
The communication of two master controllers connects the main power cell.
Further, first master controller includes the first sampled signal conditioning module, AD conversion module and communication mould
Block.
Further, second master controller and the dispersion layer controller include the second sampled signal conditioning mould
Block, voltage stabilization module, current follow-up control module, SVPWM modulation modules and fault detect protection module.
Further, the main power cell and dispersion layer power cell include the main circuit of 3 single-phase H bridge structure.
Further, the main power cell and dispersion layer power cell include radiator.
Further, first master controller, the second master controller and dispersion layer controller are FPGA.
Further, first master controller further includes human-computer interaction module.
Further, the main filter with filter is divided to be connected by optical-fibre communications.
Further, respectively the described of power supply branch road divides filter to be separately positioned in corresponding switchgear.
The beneficial effects of the utility model are：By setting main filter and dividing filter, realize to entire power grid
The comprehensively monitoring of power quality, comprehensive treatment, at the same to it is each power supply branch be detected, control and task distribute, effectively solve
The problem of regulation effect is poor when a variety of power qualities coexist, convenient for centralized management.
Main filter sets dual controller to carry out rational task scheduling simultaneously, has disperseed the processing pressure of controller,
Add the stability and reliability of system.
Description of the drawings
Fig. 1 is the system block diagram of the utility model embodiment；
Fig. 2 is the control system architecture figure of the utility model embodiment；
Fig. 3 is the power cell main circuit topological structure figure of the utility model embodiment.
Specific embodiment
The utility model is described in more detail below in conjunction with the accompanying drawings.
The purpose of this utility model is the operating mode coexisted for Multi-harmonic Sources, by traditional active electric filter device
It is improved in terms of basic control structure and layout system, devises a kind of control system based on collecting and distributing layout, effective gram
The shortcomings that processor data processing pressure in traditional control system is big has been taken, has improved data processing speed, has passed through that " branch filters
Remove, main body supplement " method effectively improve the regulation effect that operating mode coexists in a variety of power quality problems.
The technical solution of the utility model includes a kind of active power filter system based on collecting and distributing layout, it includes concentrating
Main APF (active power filtering) devices of layer and dispersion layer are from APF devices；Wherein, the main APF devices are installed on the electricity of user
It nets on the busbar of end of incoming cables, described to be installed on from APF devices on the busbar of each harmonic source branch end of incoming cables, main APF devices pass through
The size of harmonic current and reactive current in power grid is calculated in real time, and combines actual power quality problems type, to each dispersion layer
From APF device reasonable distribution governance models and output current size, so as to fulfill to each dispersion layer branch power quality problem
It individually administers, while the main APF devices of concentrated layer can be by the governance model of " harmonic wave+idle " to the power quality of power grid point of incoming cables
Problem carries out comprehensive treatment, is controlled so as to efficiently solve traditional centralized compensation pattern in terms of a variety of power quality problems coexist
Manage the problem of effect is poor.
The governance model includes three types：Harmonic wave control pattern, idle governance model and harmonic wave+idle improvement mould
Formula after user analyzes the power quality problem of field working conditions, can pass through human-computer interaction on the main APF devices of concentrated layer
Interface carries out mode setting to the slave APF devices of each dispersion layer.
The main APF devices and the shape from APF devices are all the 16E drawer specifications designs according to switchgear, power
The busbar of unit inlet wire and switchgear connects, and APF devices can be installed in switchgear, realizes power quality controlling and distribution one
The function of body.
Main APF devices in control system described in the utility model have the function of centralized management and power quality controlling,
In order to disperse the processing pressure of its processor, configured using double FPGA, a piece of FPGA is responsible for calculating and each dispersion layer is filled from APF
The management put, another FPGA are responsible for controlling and export PWM square waves.
Slave APF devices in control system described in the utility model only have the improvement for performing main APF devices instruction requirement
Function using a piece of FPGA as processor, is only responsible for the control to power cell and the corresponding PWM of output after instruction is received
Square wave.
Simultaneously in order to increase main APF devices and the versatility from APF devices, by the two panels fpga chip point of main APF devices
It does not design on 1 sum aggregate middle level controller 2 of concentrated layer controller, will be controlled from the design of the fpga chip of APF devices in dispersion layer
On device, wherein dispersion layer controller is identical with the circuit design of concentrated layer controller 2, and the two is generally applicable.
The concentrated layer controller 1 by the expansible contact pin based on upper and lower layout layer and is inserted with concentrated layer controller 2
Slot connects, and the content connected needs communicate two between the power supply of concentrated layer controller needs and two fpga chips
To direct-connected pin.
The concentrated layer controller 1 of the main APF devices and respectively from pass through between the dispersion layer controller of APF devices at a high speed
Optical fiber is up to 10Mbps as traffic channel control command and key data, fiber optic communication speed.
The concentrated layer controller 1 is by gathering network voltage, power network current signal, according to instantaneous reactive power algorithm
With iteration sliding window DFT.Algorithm calculates the reactive current that harmonic current in power grid and needs compensate, further according to each branch harmonic wave
The harmonic current respectively compensated from APF devices needs is distributed in content and the calculating of the actual conditions of reactive loss, and passes through high-speed light
Fibre is transmitted to it each dispersion layer from the dispersion layer controller of APF devices, and the controller on each dispersion layer is again by being based on nothing
The complex controll new algorithm tracking output current that source control is combined with the Repetitive controller with feedforward compensation, then passes through SVPWM tune
Method output pwm signal processed is to power cell, finally from the output of APF devices leading-out terminal and harmonic current direction phase equal in magnitude
In each branch in anti-electric current injection power grid, so as to achieve the purpose that each branch harmonic current of compensation.The main APF devices
3 single-phase H bridge structure is used with the main circuit from the power cell in APF devices.
It is given below a specific embodiment of the utility model, from APF devices is four in the present embodiment.
It is as shown in Figure 1 system block diagram of the present embodiment based on collecting and distributing layout, including the main APF devices of concentrated layer and four points
It is distributed in the slave APF devices of each dispersion layer, main APF devices and passes through fiber optic communication from APF devices；The main APF devices installation
It is described to be installed on from APF devices on the busbar of each harmonic source branch end of incoming cables on the power grid end of incoming cables busbar of user, from
Various types of loads (illumination, power etc.) are further included in switchgear where APF, n is load number.
Main APF devices combine actual power matter by calculating the size of harmonic current and reactive current in power grid in real time
Problem types is measured, to each dispersion layer from APF device reasonable distribution governance models and output current size, so as to fulfill to each scattered
The independent improvement of layer branch power quality problem, while the main APF devices of concentrated layer can pass through the governance model pair of " harmonic wave+idle "
The power quality problem of power grid point of incoming cables carries out comprehensive treatment, and regulation effect coexists so as to effectively solve a variety of power quality problems
The problem of difference.
The control system functional block diagram of the present embodiment is illustrated in figure 2, the controller of main APF devices includes concentrated layer
Controller 1, concentrated layer controller 2 and concentrated layer power output unit.Concentrated layer controller 1 realizes man-machine friendship by liquid crystal display
Mutually, while with concentrated layer controller 2 carry out data transmission, the communication of concentrated layer controller 2 and concentrated layer power cell includes adopting
Sample voltage and current, pwm signal and fault-signal.
Concentrated layer controller 1 includes network voltage sampled signal conditioning converting unit, the conditioning of power network current sampled signal turns
It changes unit, harmonic current computing unit, reactive current and calculates unit, power calculation unit, dispersion layer data allocation unit, scattered
Layer state detection unit, dispersion layer task coordinate unit, data transmission unit and data receipt unit.
Concentrated layer controller 2 includes DC voltage sampled signal conditioning converting unit, the conditioning of output current sampled signal turns
Change unit, DC voltage stability control unit, output current tracing control unit, SVPWM control output units and error protection
Monitoring unit.
The main APF of concentrated layer is communicated by optical fiber with four dispersion layers from APF, is carried out real time data and is controlled the biography of data
It is defeated.Each include dispersion layer controller and dispersion layer power cell from APF devices, dispersion layer controller is sampled including DC voltage
Signal condition converting unit, output current sampled signal conditioning converting unit, DC voltage stability control unit, output current with
Track control unit, SVPWM control output units and error protection monitoring unit；Dispersion layer power cell and dispersion layer controller it
Between communication include sampled voltage electric current, fault-signal and pwm signal.
The 26S Proteasome Structure and Function of dispersion layer controller is completely identical with concentrated layer controller 2, and difference lies in the tasks point of the two
It mixes；Dispersion layer power cell is identical with the 26S Proteasome Structure and Function of concentrated layer power cell.
In order to improve the computational accuracy of processor and calculating speed, the processor of controller uses in the control system
The Cyclone IV of ALTERA are for fpga chip EP4CE22I7, the memory of logic unit and 594kb comprising 22k, 66 18
× 18 multiplier.
It is the main circuit structure of concentrated layer power output unit in the present embodiment as shown in Figure 3, using 3 single-phase H bridge knot
Structure is made of, specific connection side DC energy storage capacitance, IGBT, principal reactance device, filter capacitor, filter resistance and secondary reactor
Formula, can be with independent control, when there is imbalance of three-phase voltage using wherein as shown in figure 3, each single-phase structure is identical
Zero sequence compensate.
Be presented above the utility model is related to specific embodiment, by set main filter and point filtering dress
Put, realize the comprehensively monitoring to entire power grid power quality, comprehensive treatment, at the same each power supply branch is detected, control and
Task is distributed, and solve thes problems, such as that regulation effect is poor when a variety of power qualities coexist, convenient for centralized management.
But the utility model is not limited to described embodiment, such as changes the quantity from APF devices or change
Specific communication modes, the technical solution so formed are finely adjusted above-described embodiment to be formed, and this technical solution is still
It falls into the scope of protection of the utility model.
Claims (10)
1. a kind of active power filter system based on collecting and distributing layout, it is characterised in that：Including the master being arranged on power bus
Filter and the filter that divides for being separately positioned on each power supply branch road, the main filter and divide filter communication to connect
It connects；The main filter includes the master controller of communication connection and main power cell；Described point of filter includes communication and connects
The dispersion layer controller and dispersion layer power cell connect.
2. a kind of active power filter system based on collecting and distributing layout according to claim 1, it is characterised in that：The master control
Device processed includes the first master controller and the second master controller of communication connection, and the second master controller communication connects the main work(
Rate unit.
3. a kind of active power filter system based on collecting and distributing layout according to claim 2, it is characterised in that：Described first
Master controller includes the first sampled signal conditioning module, AD conversion module and communication module.
4. a kind of active power filter system based on collecting and distributing layout according to Claims 2 or 3, it is characterised in that：It is described
Second master controller and the dispersion layer controller include the second sampled signal conditioning module, voltage stabilization module, electric current with
Track control module, SVPWM modulation modules and fault detect protection module.
5. a kind of active power filter system based on collecting and distributing layout according to claim 4, it is characterised in that：The main work(
Rate unit and dispersion layer power cell include the main circuit of 3 single-phase H bridge structure.
6. a kind of active power filter system based on collecting and distributing layout according to claim 5, it is characterised in that：The main work(
Rate unit and dispersion layer power cell include radiator.
7. according to a kind of active power filter system based on collecting and distributing layout of claim 5 or 6, it is characterised in that：It is described
First master controller, the second master controller and dispersion layer controller are FPGA.
8. according to a kind of active power filter system based on collecting and distributing layout of claim 5 or 6, it is characterised in that：It is described
First master controller further includes human-computer interaction module.
9. a kind of active power filter system based on collecting and distributing layout according to claim 1, it is characterised in that：The main filter
Wave apparatus with divide filter and connected by optical-fibre communications.
10. a kind of active power filter system based on collecting and distributing layout according to claim 9, it is characterised in that：Each power supply
The described of branch road divides filter to be separately positioned in corresponding switchgear.
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| CN201721500466.3U CN207426699U (en) | 2017-11-11 | 2017-11-11 | A kind of active power filter system based on collecting and distributing layout |
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| CN201721500466.3U CN207426699U (en) | 2017-11-11 | 2017-11-11 | A kind of active power filter system based on collecting and distributing layout |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193656A (en) * | 2018-09-19 | 2019-01-11 | 山东新升光电科技有限责任公司 | Crystal growing furnace power quality distributed compensation and quality-improving method |
-
2017
- 2017-11-11 CN CN201721500466.3U patent/CN207426699U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193656A (en) * | 2018-09-19 | 2019-01-11 | 山东新升光电科技有限责任公司 | Crystal growing furnace power quality distributed compensation and quality-improving method |
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