CN106786651A - A kind of tuning reactive-load compensation and filter based on intelligent control method - Google Patents
A kind of tuning reactive-load compensation and filter based on intelligent control method Download PDFInfo
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- CN106786651A CN106786651A CN201611248636.3A CN201611248636A CN106786651A CN 106786651 A CN106786651 A CN 106786651A CN 201611248636 A CN201611248636 A CN 201611248636A CN 106786651 A CN106786651 A CN 106786651A
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- processor
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- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000005070 sampling Methods 0.000 claims description 17
- 230000008447 perception Effects 0.000 claims description 3
- 230000003321 amplification Effects 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000000819 phase cycle Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in networks
- H02J3/1821—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators
- H02J3/1835—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control
- H02J3/1842—Arrangements for adjusting, eliminating or compensating reactive power in networks using shunt compensators with stepless control wherein at least one reactive element is actively controlled by a bridge converter, e.g. active filters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—Arrangements for reducing harmonics or ripples
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/26—Arrangements for eliminating or reducing asymmetry in polyphase networks
-
- 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
- Y02E40/30—Reactive power compensation
-
- 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
- Y02E40/40—Arrangements for reducing harmonics
-
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electrical Variables (AREA)
Abstract
The invention discloses a kind of tuning reactive-load compensation based on intelligent control method and filter,The processor is provided with signal interface circuit,Signal interface circuit respectively with voltage signal amplifying circuit,Source current amplifying circuit,Load current amplifies and the output end of filter circuit is connected,Pulse drive signal transmitting terminal and the drive circuit of processor are that input is connected,The output end of drive circuit is connected with the control end of each driving switch in driving switch group,The driving switch group is composed in parallel after being connected two-by-two by six groups of driving switch,Driving switch group and two groups of circuit in parallel of capacitances in series,Circuit between the driving switch wherein connected two-by-two is connected with the three-phase line of power network respectively,Circuit between two groups of series capacitances is connected with the zero line of power network,The present invention uses the balanced algorithm of constant power,The instruction current of compensation device can relatively accurately be calculated,After compensated device effect,The purpose of three-phase equilibrium compensation can be reached.
Description
Technical field
The invention belongs to reactive-load compensation and technical field of filtering, and in particular to a kind of tuning nothing based on intelligent control method
Work(is compensated and filter.
Background technology
With developing rapidly for the various industries of China, the scale of present power system expands day by day, but power system is fast
Speed development also results in becoming increasingly conspicuous for new contradiction and problem, and for example system architecture is more complicated, and load electricity consumption density is rapid
Increase, various complicated, accurate, sensitive to quality of power supply electrical equipments are constantly popularized, while reliability of the user to operation of power networks
The quality requirement of property and electric energy also more and more higher.
One of great number of issues is exactly the problem caused by threephase load imbalance.With the fast development of industry, alternating current
The impact loads such as arc stove, rolling mill, electric locomotive and large-scale semiconductor converter are increasing, on the one hand to industrial or agricultural
Production automation level, the raising of efficiency have huge promotion；On the other hand, due to the non-linear of them, impact and not
The use electrical characteristics of balance, not only cause voltage pulsation, flickering and three-phase imbalance, and it is humorous to inject substantial amounts of high order in systems
Ripple, has had a strong impact on the quality of power supply of system power supply, makes the normal work of user influenced to different extents.Three-phase system in fact
Unbalanced problem of uniting is long-standing.It is actual due to the presence of various unbalanced factors in the actual motion of power system
Power system is it is difficult to ensure that completely balance, the unbalanced situation of threephase load often occurs.Thus the three-phase voltage that triggers or
Current imbalance can cause a series of harm to power system and user.Three-phase imbalance can cause the additional hair of electric rotating machine
Heat and vibration, jeopardize its safe operation and normal output；Reduce hair converting equipment capacity utilization；Influence the normal of electrical equipment
Work, even with the service life serious curtailment of electric equipment.Negative-sequence current and zero sequence that asymmetric load is produced in power network
Electric current can produce harmful effect to system safety operation.The fundamental current of negative phase-sequence will cause generator, power transmission line and transformer
Added losses.The negative sequence voltage caused by negative-sequence current, is one of factor that the quality of power supply deteriorates.Therefore, it is necessary to take effectively
Measure solves the asymmetric problem of system.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of tuning based on intelligent control method
Reactive-load compensation and filter.
A kind of tuning reactive-load compensation and filter based on intelligent control method, including：Processor, the processor is used
In mains voltage signal, power current signal, load current DC component signal is received, according to line voltage and source current meter
Threephase load power sum is calculated, and then calculates the current value after expected compensation, the current value after expected compensation subtracts load current
DC component can be compensated instruction current numerical value, and processor sends according to compensating instruction current values with the product of yield value
Pulse drive signal controls drive circuit, and the break-make of the driving switch in drive circuit control driving switch group is realized to power network
The compensation electric current of middle injection capacitive or perception；
Driving switch group, drive circuit；
It is characterized in that：The processor is provided with signal interface circuit, and signal interface circuit is put with voltage signal respectively
Big circuit, source current amplifying circuit, load current amplify and the output end of filter circuit is connected, the pulsed drive of processor
Signal transmitting terminal is that input is connected with drive circuit, each driving switch in the output end and driving switch group of drive circuit
Control end be connected, the driving switch group is composed in parallel after being connected two-by-two by six groups of driving switch, driving switch group and two
The circuit in parallel of group capacitances in series, wherein the circuit between the driving switch connected two-by-two is connected with the three-phase line of power network respectively
Connect, the circuit between two groups of series capacitances is connected with the zero line of power network.
Preferably, the clock signal input terminal mouthful of the processor is connected with clock circuit.
Preferably, the load current amplify and filter circuit input and load current sampling element output end phase
Connection, load current sampling element is arranged on the three-phase line of power network.
Preferably, the input of the source current amplifying circuit is connected with the output end of source current sampling element,
Source current sampling element is arranged on the three-phase line of power network.
Preferably, the input of the voltage signal amplifying circuit is connected with the output end of voltage sampling element, voltage
Sampling element is arranged on the three-phase line of power network.
Compared with prior art, beneficial effects of the present invention：
The present invention can relatively accurately calculate the instruction current of compensation device using the balanced algorithm of constant power, pass through
After compensator effect, the purpose of three-phase equilibrium compensation can be reached；The present invention can stablize the voltage of receiving end and power network simultaneously,
Improve power supply quality；In the unbalanced occasion of threephase load, the active and reactive load of three-phase can be balanced by reactive-load compensation.
Brief description of the drawings
Fig. 1 is a kind of structural representation of tuning reactive-load compensation and filter based on intelligent control method of the present invention.
In figure, 1, transformer, 2, inductance, 3, driving switch group, 4, driving switch, 5, electric capacity, 6, drive circuit, 7, voltage
Signal amplification circuit, 8, source current amplifying circuit, 9, processor, 10, signal interface circuit, 11, load current amplifies and filter
Wave circuit, 12, clock circuit, 13, load.
Specific embodiment
Referring to Fig. 1, a kind of tuning reactive-load compensation and filter based on intelligent control method, including：Processor 9, institute
Processor 9 is stated for receiving mains voltage signal, power current signal, load current DC component signal, according to line voltage
Threephase load power sum is calculated with source current, and then calculates the current value after expected compensation, the current value after expected compensation
Instruction current numerical value is compensated by subtracting load current DC component, processor 9 is according to compensating instruction current values and increasing
The product of beneficial value sends pulse drive signal control drive circuit 6, the driving switch 4 in the control driving switch of drive circuit 6 group 3
Break-make, realize to the compensation electric current that capacitive or perception are injected in power network；
Driving switch group 3, drive circuit 6；
It is characterized in that：The processor 9 is provided with signal interface circuit 10, and signal interface circuit 10 is believed with voltage respectively
Number amplifying circuit 7, source current amplifying circuit 8, load current amplify and the output end of filter circuit 11 is connected, processor 9
Pulse drive signal transmitting terminal be that input is connected with drive circuit 6, the output end of drive circuit 6 and driving switch group 3
In the control end of each driving switch 4 be connected, after the driving switch group 3 is connected two-by-two by six groups of driving switch 4 and joint group
Into the circuit in parallel that driving switch group 3 is connected with two groups of electric capacity 5, wherein the circuit difference between the driving switch 4 connected two-by-two
It is connected with the three-phase line of power network, the circuit between two groups of series capacitances 5 is connected with the zero line of power network.
The clock signal input terminal mouthful of the processor 9 is connected with clock circuit 12.
The load current amplifies and the input of filter circuit 11 is connected with the output end of load current sampling element,
Load current sampling element is arranged on the three-phase line of power network.
The input of the source current amplifying circuit 8 is connected with the output end of source current sampling element, power supply electricity
Stream sampling element is arranged on the three-phase line of power network.
The input of the voltage signal amplifying circuit 7 is connected with the output end of voltage sampling element, voltage sampling unit
Part is arranged on the three-phase line of power network.
Technical solution of the present invention is exemplarily described above in conjunction with accompanying drawing to invention, it is clear that the present invention is implemented
It is not subject to the restrictions described above, as long as employ the various unsubstantialities that the method for the present invention is conceived and technical scheme is carried out changing
Enter, or it is not improved the design of invention and technical scheme are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (5)
1. a kind of tuning reactive-load compensation and filter based on intelligent control method, including：Processor (9), the processor
(9) for receiving mains voltage signal, power current signal, load current DC component signal, according to line voltage and power supply
Current calculation threephase load power sum, and then the current value after expected compensation is calculated, the current value after expected compensation subtracts negative
Carrying current dc component can be compensated instruction current numerical value, and processor (9) is according to compensating instruction current values and yield value
Product send pulse drive signal and control drive circuit (6), drive circuit (6) to control the driving in driving switch group (3) to open
The break-make of (4) is closed, is realized to the compensation electric current that capacitive or perception are injected in power network；
Driving switch group (3), drive circuit (6)；
It is characterized in that：The processor (9) is provided with signal interface circuit (10), signal interface circuit (10) respectively with voltage
Signal amplification circuit (7), source current amplifying circuit (8), load current amplify and the output end of filter circuit (11) is connected,
The pulse drive signal transmitting terminal of processor (9) is that input is connected with drive circuit (6), the output end of drive circuit (6)
Control end with each driving switch (4) in driving switch group (3) is connected, and the driving switch group (3) is opened by six groups of drivings
Close after (4) connect two-by-two and compose in parallel, the circuit in parallel that driving switch group (3) is connected with two groups of electric capacity (5), wherein connecting two-by-two
Driving switch (4) between circuit be connected with the three-phase line of power network respectively, the circuit between two groups of series capacitances (5) with
The zero line of power network is connected.
2. a kind of tuning reactive-load compensation and filter based on intelligent control method as claimed in claim 1, its feature exists
In：The clock signal input terminal mouthful of the processor (9) is connected with clock circuit (12).
3. a kind of tuning reactive-load compensation and filter based on intelligent control method as claimed in claim 1, its feature exists
In：The load current amplifies and the input of filter circuit (11) is connected with the output end of load current sampling element, bears
Current sampling element is carried to be arranged on the three-phase line of power network.
4. a kind of tuning reactive-load compensation and filter based on intelligent control method as claimed in claim 1, its feature exists
In：The input of the source current amplifying circuit (8) is connected with the output end of source current sampling element, and source current takes
Sample element is arranged on the three-phase line of power network.
5. a kind of tuning reactive-load compensation and filter based on intelligent control method as claimed in claim 1, its feature exists
In：The input of the voltage signal amplifying circuit (7) is connected with the output end of voltage sampling element, voltage sampling element peace
On the three-phase line of power network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248636.3A CN106786651A (en) | 2016-12-29 | 2016-12-29 | A kind of tuning reactive-load compensation and filter based on intelligent control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611248636.3A CN106786651A (en) | 2016-12-29 | 2016-12-29 | A kind of tuning reactive-load compensation and filter based on intelligent control method |
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| Publication Number | Publication Date |
|---|---|
| CN106786651A true CN106786651A (en) | 2017-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611248636.3A Pending CN106786651A (en) | 2016-12-29 | 2016-12-29 | A kind of tuning reactive-load compensation and filter based on intelligent control method |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645316Y (en) * | 2003-09-12 | 2004-09-29 | 四川大学 | Digital active electric power filter |
| CN201726146U (en) * | 2010-08-20 | 2011-01-26 | 河南海泰科技有限公司 | Motor dynamic reactive power compensation filtering device |
-
2016
- 2016-12-29 CN CN201611248636.3A patent/CN106786651A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2645316Y (en) * | 2003-09-12 | 2004-09-29 | 四川大学 | Digital active electric power filter |
| CN201726146U (en) * | 2010-08-20 | 2011-01-26 | 河南海泰科技有限公司 | Motor dynamic reactive power compensation filtering device |
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: Hu Yan Inventor after: Xiao Yongjun Inventor after: Guo Xiuyuan Inventor after: Tang Jun Inventor before: Xiao Yongjun Inventor before: Guo Xiuyuan Inventor before: Tang Jun |
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Application publication date: 20170531 |