CN106374484A - Control system for outdoor active power filter device - Google Patents
Control system for outdoor active power filter device Download PDFInfo
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- CN106374484A CN106374484A CN201510442372.4A CN201510442372A CN106374484A CN 106374484 A CN106374484 A CN 106374484A CN 201510442372 A CN201510442372 A CN 201510442372A CN 106374484 A CN106374484 A CN 106374484A
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- Prior art keywords
- bus
- control system
- electric power
- controller
- capacitor switching
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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]
-
- 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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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- Inverter Devices (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention relates to a control system for an outdoor active power filter device, which is connected onto a bus between a secondary side of a transformer and a nonlinear load and is used for improving the electric energy quality of the bus. The system comprises a capacitor switching device, a harmonic cancellation device, a time-sharing energy storage device and a controller, wherein the capacitor switching device, the harmonic cancellation device and the time-sharing energy storage device are connected with the controller respectively; the capacitor switching device is connected with the bus and the ground respectively; the access point and the output point of the harmonic cancellation device are arranged on the bus; and one end of the time-sharing energy storage device is connected with the bus, and the other end is connected with the harmonic cancellation device. Compared with the prior art, the device of the invention has the advantages of small land occupation, reliable operation, wide application range, powerful functions and the like.
Description
Technical field
The present invention relates to Electric control field, especially relate to a kind of control of outdoor type electric power active filter
System.
Background technology
The harmonic wave that nonlinear-load causes equally brings serious negative effect, in particular with Power Electronic Technique
Fast development, various power electronic equipments are generating electricity, transmission of electricity, increasingly extensive application in distribution and electricity system,
The harmonic wave that it is brought to electrical network, idle pollution are also gradually serious.Simultaneously with the progress of social informatization, sensitive
Property load (as computer control system, sophisticated electronics etc.) extensive application, the quality of power supply be it is also proposed
Higher requirement.
Existing active power filter is generally located on interior, because the interior space is nervous, leads to electric power to have
The heat dispersion of source filter declines impact, and for harmonic cancellation, reactive-load compensation, three-phase imbalance and electricity
Pressure the situation such as is fallen and can not all be realized, and the quality of power supply can not be ensured very well.
Content of the invention
The purpose of the present invention is exactly to overcome the defect of above-mentioned prior art presence to provide one kind to take up an area little, operation
The control system of reliable, applied widely, powerful outdoor type electric power active filter.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of control system of outdoor type electric power active filter, is connected to Circuit Fault on Secondary Transformer and nonlinear load
Between bus on, in order to improve the quality of power supply on bus, this system includes capacitor switching device, harmonic wave supports
Disappear device, timesharing energy storage device and controller, described capacitor switching device, harmonic cancellation device and timesharing storage
Can device be connected with controller respectively, described capacitor switching device is connected with bus and ground respectively, and described is humorous
The access point of ripple canceller and output point are arranged on bus, and described timesharing energy storage device one end is with bus even
Connect, the other end is connected with harmonic cancellation device.
Described harmonic cancellation device includes detector, pwm circuit and inverter, described harmonic cancellation device
Access point, detector, controller, pwm circuit, the output point of inverter harmonic canceller connect successively
Connect, described inverter is connected with timesharing energy storage device.
Described capacitor switching device includes the capacitor switching unit of multiple parallel connections, and each capacitor switching unit all wraps
Include power switch and compensating electric capacity, described power switch is connected with controller, described bus, power switch,
Compensating electric capacity and be sequentially connected.
Described timesharing energy storage device includes energy-storage travelling wave tube and voltage boosting and stabilizing circuit, and described bus, boosting voltage stabilizing are electric
Road, energy-storage travelling wave tube and inverter are sequentially connected, and described voltage boosting and stabilizing circuit is connected with controller.
Out of doors on post, highly for 4.5-5m, and outside is arranged with explosion-proof casing to described set-up of control system.
Described controller is dsp, arm, cpld or fpga.
Described inverter is two-way inverter.
Described detector includes current transformer, voltage transformer and electric power meter.
Compared with prior art, the invention has the advantages that
First, occupation of land is little, reliable: this device is applied to Standard type, and floor space greatly reduces, and solves
The problems such as anti-weather disaster in the compensation device O＆M of tradition open air, anti-external force are destroyed and radiated, can be effectively save
Land resource, expands the development space of urban distribution network, improves power supply reliability.
2nd, applied widely: the present invention can be widely applied to city business district, landscape region, residential area etc.
Ground is it is adaptable to the pressure built of various conventional load and sensitivity load reduction city distribution transformer, installation side
Just, flexible configuration is changeable.
3rd, powerful: the system can select corresponding operational mode to be mended according to the situation of bus and load
Repay, when busbar voltage is normal, when harmonic content is more, under the control of the controller to system harmonic electric current,
To offset the harmonic wave of load, when no-power vacancy in bus, reactive power can be injected to bus, to maintain system
The reactive balance of system, when bus three-phase imbalance, can exchange active energy between three-phase, make three-phase uneven
Weighing apparatus is inhibited, and when Voltage Drop and rapid fluctuations in bus, is equivalent to a controllable voltage source, maintains
The voltage stabilization of access point.
Brief description
Fig. 1 is the system structure diagram of the present invention.
Wherein, 1, controller, 21, detector, 22, pwm circuit, 23, inverter, 31, electric power opens
Close, 32, compensating electric capacity, 41, energy-storage travelling wave tube, 42, voltage boosting and stabilizing circuit, 5, nonlinear load.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment:
As shown in figure 1, a kind of control system of outdoor type electric power active filter, it is connected to Circuit Fault on Secondary Transformer
On bus and nonlinear load 5 between, in order to improve the quality of power supply on bus, this system includes capacitor and throws
Cutting apparatus, harmonic cancellation device, timesharing energy storage device and controller 1, capacitor switching device, harmonic cancellation dress
Put and be connected with controller 1 respectively with timesharing energy storage device, capacitor switching device is connected with bus and ground respectively, humorous
The access point of ripple canceller and output point are arranged on bus, and timesharing energy storage device one end is connected with bus, separately
One end is connected with harmonic cancellation device, and this set-up of control system is out of doors on post, highly for 4.75m and outside
It is arranged with explosion-proof casing, controller 1 is dsp, arm, cpld or fpga.
Harmonic cancellation device includes detector 21, pwm circuit 22 and inverter 23, the connecing of harmonic cancellation device
Access point, detector 21, controller 1, pwm circuit 22, the output point of inverter 23 harmonic canceller
It is sequentially connected, inverter 23 is connected with timesharing energy storage device, inverter 23 is two-way inverter, detector 21
Including current transformer, voltage transformer and electric power meter.
Capacitor switching device includes the capacitor switching unit of multiple parallel connections, and each capacitor switching unit all includes electric power
Switch 31 and compensating electric capacity 32, power switch 31 is connected with controller 1, bus, power switch 31, compensation
Electric capacity 32 and be sequentially connected.
Timesharing energy storage device includes energy-storage travelling wave tube 41 and voltage boosting and stabilizing circuit 42, bus, voltage boosting and stabilizing circuit 42,
Energy-storage travelling wave tube 41 and inverter 23 are sequentially connected, and voltage boosting and stabilizing circuit 42 is connected with controller 1.
The system can select corresponding operational mode to compensate according to the situation of bus and nonlinear load, works as mother
Line voltage is normal, and when harmonic content is more, controller 1 receives the bus current that detector 21 detects, and controls
The pwm circuit of harmonic cancellation device produces pwm ripple thus controlling the power switch of inverter 23, to bus
Harmonic electric current, to offset the harmonic wave of load, when no-power vacancy in bus, controls electricity by controller 1
The break-make switching compensating electric capacity 32 of the power switch 31 of container switching device, thus injecting reactive power to bus,
To maintain the reactive balance of system, when bus three-phase imbalance, active energy can be exchanged between three-phase, make
Three-phase imbalance is inhibited, and when Voltage Drop and rapid fluctuations in bus, controller 1 controls timesharing energy storage
The voltage boosting and stabilizing circuit 42 of device, makes energy-storage travelling wave tube 41 be equivalent to a voltage source, maintains the voltage of access point steady
Fixed.
The switching of this several operational mode is based on the detection to the system and load current, voltage and electrical power, leads to
Cross the analysis to these data, judge the current operation conditions of system, device according to corresponding operation conditions adjustment and
Switch its operational mode, to enable devices to play a role to greatest extent, improve the quality of power supply of system.
Claims (8)
1. a kind of control system of outdoor type electric power active filter, be connected to Circuit Fault on Secondary Transformer with non-linear
On bus between load (5), in order to improve the quality of power supply on bus it is characterised in that this system includes
Capacitor switching device, harmonic cancellation device, timesharing energy storage device and controller (1), described capacitor switching
Device, harmonic cancellation device and timesharing energy storage device are connected with controller (1) respectively, described capacitor switching
Device is connected with bus and ground respectively, and the described access point of harmonic cancellation device and output point are arranged at bus
On, described timesharing energy storage device one end is connected with bus, and the other end is connected with harmonic cancellation device.
2. the control system of a kind of outdoor type electric power active filter according to claim 1, its feature
It is, described harmonic cancellation device includes detector (21), pwm circuit (22) and inverter (23),
The described access point of harmonic cancellation device, detector (21), controller (1), pwm circuit (22), inverse
The output point becoming device (23) harmonic canceller is sequentially connected, and described inverter (23) is filled with timesharing energy storage
Put connection.
3. the control system of a kind of outdoor type electric power active filter according to claim 1, its feature
It is, described capacitor switching device includes the capacitor switching unit of multiple parallel connections, each capacitor switching unit is equal
Including power switch (31) and compensating electric capacity (32), described power switch (31) is connected with controller (1),
Described bus, power switch (31), compensating electric capacity (32) and be sequentially connected.
4. the control system of a kind of outdoor type electric power active filter according to claim 2, its feature
It is, described timesharing energy storage device includes energy-storage travelling wave tube (41) and voltage boosting and stabilizing circuit (42), described mother
Line, voltage boosting and stabilizing circuit (42), energy-storage travelling wave tube (41) and inverter (23) are sequentially connected, described boosting
Mu balanced circuit (42) is connected with controller (1).
5. the control system of a kind of outdoor type electric power active filter according to claim 1, its feature
It is, out of doors on post, highly for 4.5-5m, and outside is arranged with explosion-proof shell for described set-up of control system
Body.
6. the control system of a kind of outdoor type electric power active filter according to claim 1, its feature
It is, described controller (1) is dsp, arm, cpld or fpga.
7. the control system of a kind of outdoor type electric power active filter according to claim 2, its feature
It is, described inverter (23) is two-way inverter.
8. the control system of a kind of outdoor type electric power active filter according to claim 2, its feature
It is, described detector (21) includes current transformer, voltage transformer and electric power meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442372.4A CN106374484A (en) | 2015-07-24 | 2015-07-24 | Control system for outdoor active power filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510442372.4A CN106374484A (en) | 2015-07-24 | 2015-07-24 | Control system for outdoor active power filter device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106374484A true CN106374484A (en) | 2017-02-01 |
Family
ID=57880512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510442372.4A Pending CN106374484A (en) | 2015-07-24 | 2015-07-24 | Control system for outdoor active power filter device |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201303251Y (en) * | 2008-09-20 | 2009-09-02 | 大连理工大学 | Parallel hybrid active filter with reactive power compensation based on phase controlled switch technique |
| CN201435610Y (en) * | 2009-07-09 | 2010-03-31 | 上海艾帕电力电子有限公司 | Device for controlling power quality comprehensively |
| CN102891493A (en) * | 2012-10-23 | 2013-01-23 | 江苏华峰电器控制设备有限公司 | Active power filter reactive compensation device |
| CN103560516A (en) * | 2013-11-19 | 2014-02-05 | 中南大学 | Parallel connection hybrid type active power filter and control method thereof |
| CN103701127A (en) * | 2013-12-27 | 2014-04-02 | 国电南京自动化股份有限公司 | Novel active power filtering device and control method thereof |
| CN204407893U (en) * | 2014-12-17 | 2015-06-17 | 利思电气（上海）有限公司 | For the harmonic reactive compensating apparatus of Standard type |
| CN204928140U (en) * | 2015-07-24 | 2015-12-30 | 利思电气（上海）有限公司 | Outdoor type active power filter's control system |
-
2015
- 2015-07-24 CN CN201510442372.4A patent/CN106374484A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201303251Y (en) * | 2008-09-20 | 2009-09-02 | 大连理工大学 | Parallel hybrid active filter with reactive power compensation based on phase controlled switch technique |
| CN201435610Y (en) * | 2009-07-09 | 2010-03-31 | 上海艾帕电力电子有限公司 | Device for controlling power quality comprehensively |
| CN102891493A (en) * | 2012-10-23 | 2013-01-23 | 江苏华峰电器控制设备有限公司 | Active power filter reactive compensation device |
| CN103560516A (en) * | 2013-11-19 | 2014-02-05 | 中南大学 | Parallel connection hybrid type active power filter and control method thereof |
| CN103701127A (en) * | 2013-12-27 | 2014-04-02 | 国电南京自动化股份有限公司 | Novel active power filtering device and control method thereof |
| CN204407893U (en) * | 2014-12-17 | 2015-06-17 | 利思电气（上海）有限公司 | For the harmonic reactive compensating apparatus of Standard type |
| CN204928140U (en) * | 2015-07-24 | 2015-12-30 | 利思电气（上海）有限公司 | Outdoor type active power filter's control system |
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Application publication date: 20170201 |