CN107171302A - A kind of new microcomputer harmonic elimination device - Google Patents
A kind of new microcomputer harmonic elimination device Download PDFInfo
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- CN107171302A CN107171302A CN201710554372.2A CN201710554372A CN107171302A CN 107171302 A CN107171302 A CN 107171302A CN 201710554372 A CN201710554372 A CN 201710554372A CN 107171302 A CN107171302 A CN 107171302A
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- module
- harmonic elimination
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- 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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Abstract
The invention discloses a kind of new microcomputer harmonic elimination device, it includes residual voltage acquisition module, real-time monitoring module, memory module, LCD MODULE, alarm module, Signal-regulated kinase, communication module, harmonic elimination control module, harmonic elimination apparatus, harmonic elimination compensating module, memory module, power supply module and the single-chip microcomputer for signal data acquisition, computing and logic judgment；Structure of the present invention is novel, practical；By the efficient layout and design to harmonic elimination control module and harmonic elimination apparatus, the operating efficiency of the microcomputer harmonic elimination device is greatly improved.
Description
Technical field
Present invention relates particularly to a kind of new microcomputer harmonic elimination device.
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；At present, there is harmonic elimination tripping in harmonic elimination apparatus of the prior art, and harmonic elimination operating efficiency is relatively low
The problems such as.
The content of the invention
For above-mentioned deficiency of the prior art, the new microcomputer harmonic elimination device structure that the present invention is provided is novel, applicable
In the harmonic elimination of low current power system, and with higher harmonic elimination efficiency.
In order to reach foregoing invention purpose, the technical solution adopted by the present invention is：A kind of new microcomputer harmonic elimination device is provided,
It includes residual voltage acquisition module, real-time monitoring module, memory module, LCD MODULE, alarm module, signal condition mould
Block, communication module, harmonic elimination control module, harmonic elimination apparatus, harmonic elimination compensating module, memory module, power supply module and for signal
The single-chip microcomputer of data acquisition, computing and logic judgment；
Residual voltage acquisition module is connected with single-chip microcomputer, and residual voltage acquisition module is humorous to power network by the collection to PT voltages
The quick analysis of various frequency contents when shaking, accurate discrimination goes out：Earth fault, over-voltage fault and resonance failure；Monitoring in real time
Module is connected with single-chip microcomputer, and real-time monitoring module makes accurate judgement to the abnormal operating condition of appearance, and makes timely action；
Memory module is used to store the fault message recently occurred for 20 times, is not lost after power down；Alarm module, communication module, liquid crystal
Show that module is connected with single-chip microcomputer；Harmonic elimination control module sends triggering letter after the control signal obtained from single-chip microcomputer is handled
Number to harmonic elimination apparatus carry out harmonic elimination, harmonic elimination compensating module be used for filtering harmonics；
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, the model AMT128 of single-chip microcomputer.
Further, the model 128-64 graphic lcds of LCD MODULE.
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 new microcomputer harmonic elimination device.
Fig. 2 is the harmonic elimination control module of new microcomputer harmonic elimination device and the attachment structure schematic diagram of harmonic elimination apparatus.
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 depicted in figs. 1 and 2, the new microcomputer harmonic elimination device includes residual voltage acquisition module, real-time monitoring module, note
Recall module, LCD MODULE, alarm module, Signal-regulated kinase, communication module, harmonic elimination control module, harmonic elimination apparatus, harmonic elimination
Compensating module, memory module, power supply module and the single-chip microcomputer for signal data acquisition, computing and logic judgment.
In specific implementation, residual voltage acquisition module is connected with single-chip microcomputer, and residual voltage acquisition module passes through to PT electricity
The collection of pressure, the quick analysis of various frequency contents during to power network resonance, accurate discrimination goes out：Earth fault, over-voltage fault and
Resonance failure.
Real-time monitoring module is connected with single-chip microcomputer, and real-time monitoring module is made to the abnormal operating condition of appearance accurately to be sentenced
It is disconnected, and make timely action；Memory module is used to store the fault message recently occurred for 20 times, is not lost after power down.
Alarm module, communication module, LCD MODULE are connected with single-chip microcomputer；Harmonic elimination control module will be obtained from single-chip microcomputer
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.
The harmonic elimination control module of the new microcomputer harmonic elimination device includes voltage sampling circuit, central processor circuit, harmonic elimination
The input of the output connection central processor circuit of circuit, wherein voltage sampling circuit, the output connection of central processor circuit
The voltage signal detected is sent into central processor circuit, central processing unit electricity by the input of harmonic elimination circuit, voltage sampling circuit
Voltage signal is converted to PT exciting currents and compared with setting value by road, when PT exciting currents are more than setting value, controls harmonic elimination
Circuit, which is connected, carries out harmonic elimination, and harmonic elimination polyvinyl chloride is accurate.
The harmonic elimination apparatus of the new microcomputer harmonic elimination device includes three-phase five-limb reactor and damping resistance, three-phase five-limb
Reactor includes reactor primary winding and reactor secondary windings, and reactor primary winding includes the first reactor primary winding
4th, the second reactor primary winding 5 and the 3rd reactor primary winding 6, the first reactor primary winding 4, the second reactor primary
The reactor primary winding 6 of winding 5 and the 3rd is connected with voltage sampling circuit；It is secondary that reactor secondary windings includes the first reactor
Winding 1, the second reactor secondary windings 2 and the 3rd reactor secondary windings 3, the first reactor secondary windings 1, the second reactor
The reactor secondary windings 3 of secondary windings 2 and the 3rd is sequentially connected in series into open delta, one end ground connection of open delta, the other end with
Damping resistance and the connection of 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：The model AMT128 of single-chip microcomputer.
The preferred embodiments of the present invention are：The model 128-64 graphic lcds of LCD MODULE.
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 new microcomputer harmonic elimination device, it is characterised in that：Including residual voltage acquisition module, real-time monitoring module, memory
Module, LCD MODULE, alarm module, Signal-regulated kinase, communication module, harmonic elimination control module, harmonic elimination apparatus, harmonic elimination are mended
Repay module, memory module, power supply module and the single-chip microcomputer for signal data acquisition, computing and logic judgment；
The residual voltage acquisition module is connected with the single-chip microcomputer, and the residual voltage acquisition module to PT voltages by adopting
Collection, the quick analysis of various frequency contents during to power network resonance, accurate discrimination goes out：Earth fault, over-voltage fault and resonance event
Barrier；The real-time monitoring module is connected with single-chip microcomputer, and real-time monitoring module makes accurate judgement to the abnormal operating condition of appearance,
And make timely action；The memory module is used to store the fault message recently occurred for 20 times, is not lost after power down；The report
Alert module, communication module, LCD MODULE are connected with the single-chip microcomputer；The harmonic elimination control module will be obtained from single-chip microcomputer
Control signal handled after send trigger signal to harmonic elimination apparatus carry out harmonic elimination, the harmonic elimination compensating module be used for filter humorous
Ripple；
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. new microcomputer harmonic elimination device according to claim 1, it is characterised in that：The harmonic elimination compensating module includes
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；The power factor sampling unit and power foutor automated compensator, high pressure
The connection of switching cabinet is compensated, 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. new microcomputer harmonic elimination device according to claim 1, it is characterised in that：The model of the single-chip microcomputer
AMT128。
4. new microcomputer harmonic elimination device according to claim 1, it is characterised in that：The model of the LCD MODULE
128-64 graphic lcds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554372.2A CN107171302A (en) | 2017-07-10 | 2017-07-10 | A kind of new microcomputer harmonic elimination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710554372.2A CN107171302A (en) | 2017-07-10 | 2017-07-10 | A kind of new microcomputer harmonic elimination device |
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| Publication Number | Publication Date |
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| CN107171302A true CN107171302A (en) | 2017-09-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710554372.2A Pending CN107171302A (en) | 2017-07-10 | 2017-07-10 | A kind of new microcomputer harmonic elimination device |
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Citations (6)
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|---|---|---|---|---|
| CN101009429A (en) * | 2006-01-16 | 2007-08-01 | 林苏 | Harmony and arc elimination method of the neutral point non-valid grounding power grid and its integrated protection device |
| 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 |
| CN105958454A (en) * | 2016-07-22 | 2016-09-21 | 安徽亚辉电气自动化有限公司 | Control analysis system based on microcomputer resonance elimination device |
| 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 |
-
2017
- 2017-07-10 CN CN201710554372.2A patent/CN107171302A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009429A (en) * | 2006-01-16 | 2007-08-01 | 林苏 | Harmony and arc elimination method of the neutral point non-valid grounding power grid and its integrated protection device |
| 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 |
| CN105958454A (en) * | 2016-07-22 | 2016-09-21 | 安徽亚辉电气自动化有限公司 | Control analysis system based on microcomputer resonance elimination device |
| 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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Application publication date: 20170915 |