CN107332219A - A kind of harmonic elimination system for microcomputer - Google Patents
A kind of harmonic elimination system for microcomputer Download PDFInfo
- Publication number
- CN107332219A CN107332219A CN201710554355.9A CN201710554355A CN107332219A CN 107332219 A CN107332219 A CN 107332219A CN 201710554355 A CN201710554355 A CN 201710554355A CN 107332219 A CN107332219 A CN 107332219A
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- China
- Prior art keywords
- harmonic elimination
- reactor
- circuit
- voltage
- harmonic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/005—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions
- H02H9/007—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection avoiding undesired transient conditions avoiding or damping oscillations, e.g. fenoresonance or travelling waves
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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
- H02J3/18—Arrangements for adjusting, eliminating or compensating reactive power in 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a kind of harmonic elimination system for microcomputer, it includes harmonic elimination control module, harmonic elimination apparatus and harmonic elimination compensating module；Harmonic elimination control module sends trigger signal to harmonic elimination apparatus and carries out harmonic elimination after the control signal obtained from single-chip microcomputer processing center is handled, harmonic elimination compensating module is used for filtering harmonics；Harmonic elimination control module includes voltage sampling circuit, central processor circuit, harmonic elimination circuit, the wherein input of the output connection central processor circuit of voltage sampling circuit, the input of the output connection harmonic elimination circuit of central processor circuit, the voltage signal detected is sent into central processor circuit by voltage sampling circuit, and voltage signal is converted to PT exciting currents and compared with setting value by central processor circuit；Harmonic elimination apparatus includes three-phase five-limb reactor and damping resistance；The harmonic elimination system detectio that this is used for microcomputer is convenient, accuracy of judgement, and with higher stability, safety and reliability.
Description
Technical field
Present invention relates particularly to a kind of harmonic elimination system for microcomputer.
Background technology
Result from industrial development and also promote industrial development, but the mankind are it has also been found that electricity is in limitation industrial development, then, Ren Leigeng
It is further that electricity is studied and controlled.In power system, ferromagnetic resonance frequently occurs, and overvoltage will be produced during resonance,
The safety of serious threat power system.
The content of the invention
For above-mentioned deficiency of the prior art, the harmonic elimination system detectio provided by the present invention for microcomputer is convenient, judges
Accurately, and with higher stability, safety and reliability.
In order to reach foregoing invention purpose, the technical solution adopted by the present invention is：A kind of harmonic elimination system for microcomputer is provided
System, it includes harmonic elimination control module, harmonic elimination apparatus and harmonic elimination compensating module；Harmonic elimination control module will be obtained from single-chip microcomputer processing center
The control signal taken sends trigger signal to harmonic elimination apparatus and carries out harmonic elimination after being handled, harmonic elimination compensating module is used to filter humorous
Ripple；
Harmonic elimination control module includes voltage sampling circuit, central processor circuit, harmonic elimination circuit, and wherein voltage sampling circuit is defeated
Go out to connect the input of central processor circuit, the input of the output connection harmonic elimination circuit of central processor circuit, voltage sample electricity
The voltage signal detected is sent into central processor circuit by road, and voltage signal is converted to PT excitations electricity by central processor circuit
Flow and compared with setting value, when PT exciting currents are more than setting value, control harmonic elimination circuit, which is connected, carries out harmonic elimination；
Harmonic elimination apparatus includes three-phase five-limb reactor and damping resistance, and three-phase five-limb reactor includes reactor primary winding
With reactor secondary windings, reactor primary winding includes the first reactor primary winding, the second reactor primary winding and the
Three reactor primary windings, the first reactor primary winding, the second reactor primary winding and the 3rd reactor primary winding with
Voltage sampling circuit is connected；Reactor secondary windings includes the first reactor secondary windings, the second reactor secondary windings and the
Three reactor secondary windings, the first reactor secondary windings, the second reactor secondary windings and the 3rd reactor secondary windings according to
Secondary to be connected into open delta, one end ground connection, the other end and the damping resistance and harmonic elimination circuit of open delta are connected, and damping resistance connects
Ground.
Further, harmonic elimination compensating module include power factor sampling unit, power foutor automated compensator,
Background monitoring unit, high pressure compensation switching cabinet, high-voltage capacitance switching group and reactance harmonic-eliminating filtering unit；Power factor sampling list
Member is connected with power foutor automated compensator, high pressure compensation switching cabinet, power foutor automated compensator, Microcomputer Protection
Unit, high pressure compensation switching cabinet are sequentially connected in series, high-voltage capacitance switching group and high pressure compensation switching cabinet, auto power-factor compensating control
Device connection processed, reactance harmonic-eliminating filtering unit connection high-voltage capacitance switching group.
Further, voltage collection circuit includes three-phase voltage Acquisition Circuit and residual voltage Acquisition Circuit.
Further, the resistance of damping resistance is 0.1 ~ 10 ohm.
Beneficial effects of the present invention are：The harmonic elimination apparatus is easy to detect, accuracy of judgement, can truly reflect comprising any frequency
The input signal of rate component and DC component, is not influenceed by PT electric currents Severe distortion during resonance, and signal detection is accurate, after being easy to
It is efficient that continuous harmonic elimination works, and element is easily installed less；Meanwhile, it can be applied to neutral point of the capacitance current less than 10A and does not connect
Ground system, and harmonic elimination performance is good；It can either avoid to earthing capacitance current to electromagnetic potential transformer and electromagnetic potential
The impact of transformer fuse, effectively prevent electromagnetic potential transformer burn, electromagnetic potential transformer fuse blows,
It centering point isolated neutral system capacitive earth current can be released in time again, isolated neutral system is avoided increase electricity
Stream detection and control circuit, enhance stability, the safety and reliability of isolated neutral system operation.
Brief description of the drawings
Fig. 1 is the structural representation of the harmonic elimination system for microcomputer.
Wherein：1st, the first reactor secondary windings；2nd, the second reactor secondary windings；3rd, the 3rd reactor secondary windings；
4th, the first reactor primary winding；5th, the second reactor primary winding；6th, the 3rd reactor primary winding.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only an embodiment of the present invention, rather than whole embodiments.Based on this
Embodiment in invention, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, protection scope of the present invention is belonged to.
As shown in figure 1, the harmonic elimination system for being used for microcomputer includes harmonic elimination control module, harmonic elimination apparatus and harmonic elimination compensation mould
Block；Harmonic elimination control module sends trigger signal to harmonic elimination and filled after the control signal obtained from single-chip microcomputer processing center is handled
Carry out harmonic elimination is put, harmonic elimination compensating module is used for filtering harmonics.
The harmonic elimination control module for being used for the harmonic elimination system of microcomputer includes voltage sampling circuit, central processor circuit, disappeared
The input of the output connection central processor circuit of humorous circuit, wherein voltage sampling circuit, the output of central processor circuit connects
The input of harmonic elimination circuit is connect, the voltage signal detected is sent into central processor circuit, central processing unit by voltage sampling circuit
Voltage signal is converted to PT exciting currents and compared with setting value by circuit, and when PT exciting currents are more than setting value, control disappears
Humorous circuit, which is connected, carries out harmonic elimination, and harmonic elimination polyvinyl chloride is accurate.
The harmonic elimination apparatus for being used for the harmonic elimination system of microcomputer includes three-phase five-limb reactor and damping resistance, three-phase and five-pole
Formula reactor include reactor primary winding and reactor secondary windings, reactor primary winding include the first reactor primary around
At the beginning of the 4, second reactor primary winding 5 of group and the 3rd reactor primary winding 6, the first reactor primary winding 4, the second reactor
The level reactor primary winding 6 of winding 5 and the 3rd is connected with voltage sampling circuit；Reactor secondary windings includes the first reactor
Level winding 1, the second reactor secondary windings 2 and the 3rd reactor secondary windings 3, the first reactor secondary windings 1, the second reactance
The reactor secondary windings 3 of device secondary windings 2 and the 3rd is sequentially connected in series into open delta, one end ground connection of open delta, the other end
It is connected with damping resistance and harmonic elimination circuit, damping resistance ground connection.
In specific implementation, the harmonic elimination apparatus is easy to detect, accuracy of judgement, can truly reflect comprising optional frequency component
And the input signal of DC component, do not influenceed by PT electric currents Severe distortion during resonance, signal detection is accurate, is easy to follow-up harmonic elimination
What is worked is efficient, and element is easily installed less；Meanwhile, it can be applied to the isolated neutral system that capacitance current is less than 10A
System, and harmonic elimination performance is good；It can either avoid to earthing capacitance current to electromagnetic potential transformer and electromagnetic potential mutual inductance
The impact of device fuse, effectively prevent electromagnetic potential transformer burn, electromagnetic potential transformer fuse blows, and energy
Enough timely centering point isolated neutral system capacitive earth currents are released, and isolated neutral system is avoided increase electric current inspection
Survey and control circuit, enhance stability, the safety and reliability of isolated neutral system operation.
The preferred embodiments of the present invention are：Harmonic elimination compensating module includes power factor sampling unit, power factor certainly
Dynamic compensating controller, background monitoring unit, high pressure compensation switching cabinet, high-voltage capacitance switching group and reactance harmonic-eliminating filtering unit；
Power factor sampling unit is connected with power foutor automated compensator, high pressure compensation switching cabinet, auto power-factor compensating
Controller, Microcomputer Protection unit, high pressure compensation switching cabinet are sequentially connected in series, high-voltage capacitance switching group and high pressure compensation switching cabinet, work(
Rate factor automatic compensating controller is connected, reactance harmonic-eliminating filtering unit connection high-voltage capacitance switching group.
The preferred embodiments of the present invention are：Voltage collection circuit includes three-phase voltage Acquisition Circuit and residual voltage is gathered
Circuit.
The preferred embodiments of the present invention are：The resistance of damping resistance is 0.1 ~ 10 ohm.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
A variety of modifications to these embodiments will make it will be apparent that defined herein one for those skilled in the art
As principle can in other embodiments be realized in the case where not departing from the spirit or scope of invention.Therefore, the present invention will not
It can be limited and the embodiments shown herein, and be to fit to consistent with principles disclosed herein and novel features
Most wide scope.
Claims (4)
1. a kind of harmonic elimination system for microcomputer, it is characterised in that：Mould is compensated including harmonic elimination control module, harmonic elimination apparatus and harmonic elimination
Block；The harmonic elimination control module sends trigger signal to disappearing after the control signal obtained from single-chip microcomputer processing center is handled
Humorous device carries out harmonic elimination, and the harmonic elimination compensating module is used for filtering harmonics；
The harmonic elimination control module includes voltage sampling circuit, central processor circuit, wherein harmonic elimination circuit, voltage sampling circuit
Output connection central processor circuit input, the input of the output connection harmonic elimination circuit of central processor circuit, voltage adopts
The voltage signal detected is sent into central processor circuit by sample circuit, and voltage signal is converted to PT by central processor circuit encourages
Magnetoelectricity stream is simultaneously compared with setting value, when PT exciting currents are more than setting value, and control harmonic elimination circuit, which is connected, carries out harmonic elimination；
The harmonic elimination apparatus includes three-phase five-limb reactor and damping resistance, and the three-phase five-limb reactor includes reactor
Armature winding and reactor secondary windings, the reactor primary winding include the first reactor primary winding, the second reactor
Armature winding and the 3rd reactor primary winding, the first reactor primary winding, the second reactor primary winding and the 3rd
Reactor primary winding is connected with voltage sampling circuit；The reactor secondary windings includes the first reactor secondary windings, the
Two reactor secondary windings and the 3rd reactor secondary windings, the first reactor secondary windings, the second reactor it is secondary around
Group and the 3rd reactor secondary windings are sequentially connected in series into open delta, one end ground connection of the open delta, the other end with it is described
Damping resistance and the connection of harmonic elimination circuit, the damping resistance ground connection.
2. the harmonic elimination system according to claim 1 for microcomputer, it is characterised in that：The harmonic elimination compensating module includes bag
Include power factor sampling unit, power foutor automated compensator, background monitoring unit, high pressure compensation switching cabinet, high-tension electricity
Hold switching group and reactance harmonic-eliminating filtering unit；The power factor sampling unit and power foutor automated compensator, height
Pressure compensation switching cabinet connection, the power foutor automated compensator, Microcomputer Protection unit, high pressure compensation switching cabinet are gone here and there successively
Connect, high-voltage capacitance switching group is connected with high pressure compensation switching cabinet, power foutor automated compensator, the reactance harmonic-eliminating filtering
Unit connects high-voltage capacitance switching group.
3. the harmonic elimination system according to claim 1 for microcomputer, it is characterised in that：The voltage collection circuit includes three
Phase voltage Acquisition Circuit and residual voltage Acquisition Circuit.
4. the harmonic elimination system according to claim 1 for microcomputer, it is characterised in that：The resistance of the damping resistance is
0.1 ~ 10 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554355.9A CN107332219A (en) | 2017-07-10 | 2017-07-10 | A kind of harmonic elimination system for microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554355.9A CN107332219A (en) | 2017-07-10 | 2017-07-10 | A kind of harmonic elimination system for microcomputer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107332219A true CN107332219A (en) | 2017-11-07 |
Family
ID=60196479
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710554355.9A Pending CN107332219A (en) | 2017-07-10 | 2017-07-10 | A kind of harmonic elimination system for microcomputer |
Country Status (1)
| Country | Link |
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| CN (1) | CN107332219A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109617095A (en) * | 2018-12-21 | 2019-04-12 | 云南电网有限责任公司西双版纳供电局 | A kind of novel harmonic elimination apparatus |
| WO2019210768A1 (en) * | 2018-05-04 | 2019-11-07 | 南京南瑞继保电气有限公司 | Method and apparatus for rapidly eliminating ferromagnetic resonance of voltage transformer |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203014388U (en) * | 2012-12-31 | 2013-06-19 | 湘潭开关厂有限公司 | High-voltage filtering harmonic elimination and compensation system |
| CN203967750U (en) * | 2014-07-03 | 2014-11-26 | 新疆特变电工自控设备有限公司 | A kind of arc-extinguishing harmonic-eliminating integrated cabinet |
| CN106532675A (en) * | 2016-11-18 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | Resonance elimination apparatus and resonance elimination system |
| CN106602516A (en) * | 2016-11-23 | 2017-04-26 | 苏州立旭智能电气有限公司 | PT secondary harmonic eliminating device and harmonic eliminating method |
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2017
- 2017-07-10 CN CN201710554355.9A patent/CN107332219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203014388U (en) * | 2012-12-31 | 2013-06-19 | 湘潭开关厂有限公司 | High-voltage filtering harmonic elimination and compensation system |
| CN203967750U (en) * | 2014-07-03 | 2014-11-26 | 新疆特变电工自控设备有限公司 | A kind of arc-extinguishing harmonic-eliminating integrated cabinet |
| CN106532675A (en) * | 2016-11-18 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | Resonance elimination apparatus and resonance elimination system |
| CN106602516A (en) * | 2016-11-23 | 2017-04-26 | 苏州立旭智能电气有限公司 | PT secondary harmonic eliminating device and harmonic eliminating method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019210768A1 (en) * | 2018-05-04 | 2019-11-07 | 南京南瑞继保电气有限公司 | Method and apparatus for rapidly eliminating ferromagnetic resonance of voltage transformer |
| RU2743460C1 (en) * | 2018-05-04 | 2021-02-18 | ЭнАр ЭЛЕКТРИК КО., ЛТД | Method and device for fast elimination of ferromagnetic resonance of voltage transformer |
| CN109617095A (en) * | 2018-12-21 | 2019-04-12 | 云南电网有限责任公司西双版纳供电局 | A kind of novel harmonic elimination apparatus |
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| PB01 | Publication | ||
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Application publication date: 20171107 |