CN208767796U - Three-phase current unbalance automatic control system - Google Patents
Three-phase current unbalance automatic control system Download PDFInfo
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- CN208767796U CN208767796U CN201821000384.7U CN201821000384U CN208767796U CN 208767796 U CN208767796 U CN 208767796U CN 201821000384 U CN201821000384 U CN 201821000384U CN 208767796 U CN208767796 U CN 208767796U
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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
- Y02E40/50—Arrangements for eliminating or reducing asymmetry in polyphase networks
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Abstract
Three-phase current unbalance automatic control system, including voltage collection circuit, circuit for signal conditioning and partial pressure output circuit, voltage signal of the voltage apparatus for electricity output three-phase current in the voltage collection circuit acquisition electric system, the signal that the circuit for signal conditioning divides two-way to receive voltage collection circuit, it inputs in transport and placing device AR1 inverting input terminal and transport and placing device AR2 non-inverting input terminal all the way, two tunnels devise triode Q1 detection voltage collection circuit output signal, by adjusting transport and placing device AR1 homophase input terminal potential, play the effect for adjusting transport and placing device AR1 output signal, most afterwards after transport and placing device AR2 is simultaneously amplified in input partial pressure output circuit, the partial pressure output circuit uses triode Q2, triode Q3 and resistance R7, resistance R9 and resistance R10 composition compound circuit is to defeated after voltage Out, and the effect of offset voltage can be played to three-phase current unbalance automatic control system for the voltage signal of electricity output three-phase current by voltage apparatus in real-time detection electric system.
Description
Technical field
The utility model relates to phase-change switch technical fields, more particularly to three-phase current unbalance automatic control system.
Background technique
Currently, imbalance of three-phase voltage is mainly by load unbalanced, three phase of impedance of system is asymmetric in the power system
And caused by the incorrect tuning of arc suppression coil.Each phase institute on-load is unevenly distributed；Single-phase high-power load access；Each phase
Loading the asynchronism used is all three-phase imbalance Producing reason.Three-phase imbalance can generate the damage for increasing route electric energy
Consumption；Reduce the efficiency of distribution transformer；Distribution transformer temperature increases, and shortens the working life；Neutral point is subjected to displacement, three-phase electricity
Press the harm such as asymmetry.
Voltage apparatus often will appear imbalance of three-phase voltage problem for electricity output three-phase current in electric system, therefore need
Three-phase current unbalance automatic control system is wanted to be regulated and controled, though however such mode reduces three-phase voltage to a certain extent
Unbalanced problem, but will lead to that three-phase voltage is under-voltage, seriously affect three-phase current unbalance automatic control system popularization and
It uses.
So the utility model provides the new scheme of one kind to solve the problems, such as this.
Utility model content
For above situation, for the defect for overcoming the prior art, the utility model is designed to provide three-phase current not
Balance automatic control system, have be skillfully constructed, the characteristic of human oriented design, being capable of voltage apparatus in real-time detection electric system
For the voltage signal of electricity output three-phase current, and the effect of offset voltage can be played to three-phase current unbalance automatic control system
Fruit.
Its technical solution solved is three-phase current unbalance automatic control system, including voltage collection circuit, signal tune
Economize on electricity road and partial pressure output circuit, and voltage apparatus is for electricity output three-phase current in the voltage collection circuit acquisition electric system
It is defeated to input transport and placing device AR1 reverse phase all the way for voltage signal, the signal that the circuit for signal conditioning divides two-way to receive voltage collection circuit
Enter in end and transport and placing device AR2 non-inverting input terminal, two tunnels devise triode Q1 detection voltage collection circuit output signal, pass through tune
Save transport and placing device AR1 homophase input terminal potential, play adjust transport and placing device AR1 output signal effect, most afterwards through transport and placing device AR2 simultaneously
After amplification in input partial pressure output circuit, the partial pressure output circuit uses triode Q2, triode Q3 and resistance R7, resistance R9
And resistance R10 composition compound circuit that is to say in input electric power system in voltage apparatus feeder ear to exporting after voltage；
The circuit for signal conditioning includes triode Q1, and one end of the base stage connecting resistance R4 of triode Q1, resistance R4's is another
One end of one terminating resistor R5 and one end of resistance R3, one end of the collector connecting resistance R6 of triode Q1, resistance R6's is another
End ground connection, the other end of the emitter connecting resistance R3 of triode Q1 and one end of resistance R11, another terminating diode of resistance R5
The anode of D3, one end of the cathode connecting resistance R12 of diode D3 and the inverting input terminal of transport and placing device AR3, the same phase of transport and placing device AR1
Input terminating resistor R11 the other end, transport and placing device AR1 output terminating resistor R12 the other end and resistance R13 one end and
The anode of diode D1, the non-inverting input terminal of another termination transport and placing device AR2 of resistance R13, the inverting input terminal of transport and placing device AR2
One end of connecting resistance R14, resistance R15, the other end ground connection of resistance R14, the output of another termination transport and placing device AR2 of resistance R15
End, the cathode of diode D1 connect the collector of triode Q2.
Due to the use of above technical scheme, the utility model has the following advantages that compared with prior art；
1. devising triode Q1 detection voltage collection circuit output signal, triode Q1 is low level conducting, is prevented low
It is insufficient that level voltage signal can make offset voltage, while playing the effect of transistor amplifier, then same with transport and placing device AR1
Mutually amplify, wherein being reduced to a certain extent due to the current potential that transport and placing device AR1 inverting input terminal is circuit for signal conditioning output signal
The current potential of transport and placing device AR1 output signal, therefore transport and placing device AR2 is devised with mutually amplification transport and placing device AR1 output signal current potential, make
Circuit for signal conditioning output signal strength can compensate in electric system voltage apparatus for the voltage of electricity output three-phase current.
2. with triode Q2, triode Q3 and resistance R7, resistance R9 and resistance R10 composition compound circuit to voltage
It is exported after partial pressure, according to the voltage signal that voltage collection circuit acquires, partial pressure output circuit exports different offset voltages, works as electricity
When voltage apparatus is excessive for the under-voltage of electricity output three-phase current in Force system, triode Q3 conducting, resistance R9, resistance R10
Parallel connection, for level-one adjust voltage, at this time offset voltage be maximum, when in electric system voltage apparatus for electricity output three-phase current
When under-voltage is normal, triode Q1, triode Q3 are not turned on, and are second voltage regulation, when voltage apparatus is powered in electric system
When the under-voltage of output three-phase current is low, transport and placing device AR3 output voltage is separated a part and released to big by triode Q2 conducting
Ground plays the offset voltage effect of voltage apparatus feeder ear in automatic adjustment electric system.
Detailed description of the invention
Fig. 1 is the circuit module figure of the utility model three-phase current unbalance automatic control system.
Fig. 2 is the circuit diagram of the utility model three-phase current unbalance automatic control system.
Specific embodiment
Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached
Fig. 2 can be clearly presented in the detailed description of embodiment.The structure content being previously mentioned in following embodiment is to say
Bright book attached drawing is reference.
Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.
Embodiment one, three-phase current unbalance automatic control system, including voltage collection circuit, circuit for signal conditioning and point
Voltage follower circuit, in the voltage collection circuit acquisition electric system voltage apparatus for electricity output three-phase current voltage signal,
The signal that the circuit for signal conditioning divides two-way to receive voltage collection circuit inputs transport and placing device AR1 inverting input terminal and fortune all the way
It puts in device AR2 non-inverting input terminal, two tunnels devise triode Q1 detection voltage collection circuit output signal, by adjusting transport and placing device
AR1 homophase input terminal potential plays the effect for adjusting transport and placing device AR1 output signal, most defeated after transport and placing device AR2 is simultaneously amplified afterwards
Enter to divide in output circuit, the partial pressure output circuit is with triode Q2, triode Q3 and resistance R7, resistance R9 and resistance
R10 forms compound circuit to exporting after voltage, that is to say in input electric power system in voltage apparatus feeder ear；
It is defeated to input transport and placing device AR1 reverse phase all the way for the signal that the circuit for signal conditioning divides two-way to receive voltage collection circuit
Enter in end and transport and placing device AR2 non-inverting input terminal, respectively transport and placing device AR1 anti-phase input terminal potential and transport and placing device AR2 homophase input
Terminal potential, two tunnels devise triode Q1 detection voltage collection circuit output signal, and triode Q1 is low level conducting, prevent low
It is insufficient that level voltage signal can make offset voltage, while playing the effect of transistor amplifier, then same with transport and placing device AR1
Mutually amplify, wherein being reduced to a certain extent due to the current potential that transport and placing device AR1 inverting input terminal is circuit for signal conditioning output signal
The current potential of transport and placing device AR1 output signal, therefore transport and placing device AR2 is devised with mutually amplification transport and placing device AR1 output signal current potential, make
Circuit for signal conditioning output signal strength can compensate for voltage of the voltage apparatus for electricity output three-phase current, three poles in electric system
One end of the base stage connecting resistance R4 of pipe Q1, one end of another terminating resistor R5 of resistance R4 and one end of resistance R3, triode Q1
Collector connecting resistance R6 one end, resistance R6 the other end ground connection, the other end of the emitter connecting resistance R3 of triode Q1 and
One end of resistance R11, the anode of another terminating diode D3 of resistance R5, one end of the cathode connecting resistance R12 of diode D3 and
The inverting input terminal of transport and placing device AR3, the other end of the homophase input terminating resistor R11 of transport and placing device AR1, the output of transport and placing device AR1
The anode of the other end of terminating resistor R12 and one end of resistance R13 and diode D1, another termination transport and placing device of resistance R13
The non-inverting input terminal of AR2, one end of the anti-phase input terminating resistor R14 of transport and placing device AR2, resistance R15, the other end of resistance R14
Ground connection, the output end of another termination transport and placing device AR2 of resistance R15, the cathode of diode D1 connect the collector of triode Q2.
Embodiment two, on the basis of example 1, the partial pressure output circuit use triode Q2, triode Q3 and electricity
Resistance R7, resistance R9 and resistance R10 composition compound circuit after voltage to exporting, according to the voltage of voltage collection circuit acquisition
Signal, partial pressure output circuit export different offset voltages, when in electric system voltage apparatus for the electricity of electricity output three-phase current
When pressing under-voltage excessive, triode Q3 conducting, resistance R9, resistance R10 are in parallel, adjust voltage for level-one, and offset voltage is most at this time
Greatly, when voltage apparatus is normal for the under-voltage of electricity output three-phase current in electric system, triode Q1, triode Q3 are not
Conducting is second voltage regulation, and when voltage apparatus is low for the under-voltage of electricity output three-phase current in electric system, triode Q2 is led
It is logical, it transport and placing device AR3 output voltage is separated into a part releases to greatly, playing voltage apparatus in automatic adjustment electric system and power
The offset voltage effect at end, the base stage of triode Q2 connect the hair of the output end of transport and placing device AR2 and one end of resistance R7, triode Q3
Emitter-base bandgap grading, one end of the emitter connecting resistance R8 of triode Q2, the other end ground connection of resistance R8, the base stage connecting resistance R7 of triode Q3
The other end and resistance R9 one end, one end of the collector connecting resistance R10 of triode Q3, the other end of resistance R9, resistance R10
Connect signal output port.
Embodiment three, on the basis of example 2, the voltage collection circuit use the voltage of model JDG4-0.5
Mutual inductor J1 acquires voltage signal of the voltage apparatus for electricity output three-phase current in electric system, the power end of voltage transformer J1
One end of connecting resistance R1, one end of another termination capacitor C1 of resistance R1 and the output of power supply+5V, voltage transformer J1 terminate electricity
Hinder one end of R2, one end of another terminating resistor R5 of resistance R2, capacitor C1 the other end, the ground terminal of voltage transformer J1
Ground connection.
When the utility model is specifically used, three-phase current unbalance automatic control system, including voltage collection circuit, signal
Circuit and partial pressure output circuit are adjusted, voltage apparatus is for electricity output three-phase current in the voltage collection circuit acquisition electric system
Voltage signal, the circuit for signal conditioning divide two-way receive voltage collection circuit signal, all the way input transport and placing device AR1 reverse phase
In input terminal and transport and placing device AR2 non-inverting input terminal, respectively transport and placing device AR1 anti-phase input terminal potential is with transport and placing device AR2 with mutually defeated
Enter terminal potential, two tunnels devise triode Q1 detection voltage collection circuit output signal, and triode Q1 is low level conducting, prevent
It is insufficient that low level voltage signal can make offset voltage, while playing the effect of transistor amplifier, then uses transport and placing device AR1
Same Xiang Fang great, wherein being dropped to a certain extent due to the current potential that transport and placing device AR1 inverting input terminal is circuit for signal conditioning output signal
The low current potential of transport and placing device AR1 output signal, therefore devise transport and placing device AR2 with mutually amplification transport and placing device AR1 output signal current potential,
Circuit for signal conditioning output signal strength is set to can compensate for voltage of the voltage apparatus for electricity output three-phase current, institute in electric system
Partial pressure output circuit is stated with triode Q2, triode Q3 and resistance R7, resistance R9 and resistance R10 composition compound circuit to electricity
It exports, is that is to say in input electric power system in voltage apparatus feeder ear after pressure partial pressure.
The above is to combine specific embodiment further detailed description of the utility model, and it cannot be said that originally
Utility model specific implementation is limited only to this；Belonging to the utility model and for those skilled in the technology concerned,
Under the premise of technical solutions of the utility model thinking, made expansion and the replacement of operating method, data should all be fallen in
Within scope of protection of the utility model.
Claims (3)
1. three-phase current unbalance automatic control system, including voltage collection circuit, circuit for signal conditioning and partial pressure output circuit,
It is characterized in that, in the voltage collection circuit acquisition electric system voltage apparatus for electricity output three-phase current voltage signal,
The signal that the circuit for signal conditioning divides two-way to receive voltage collection circuit inputs transport and placing device AR1 inverting input terminal and fortune all the way
It puts in device AR2 non-inverting input terminal, two tunnels devise triode Q1 detection voltage collection circuit output signal, by adjusting transport and placing device
AR1 homophase input terminal potential plays the effect for adjusting transport and placing device AR1 output signal, most defeated after transport and placing device AR2 is simultaneously amplified afterwards
Enter to divide in output circuit, the partial pressure output circuit is with triode Q2, triode Q3 and resistance R7, resistance R9 and resistance
R10 forms compound circuit to exporting after voltage, that is to say in input electric power system in voltage apparatus feeder ear；
The circuit for signal conditioning includes triode Q1, one end of the base stage connecting resistance R4 of triode Q1, the other end of resistance R4
One end of connecting resistance R5 and one end of resistance R3, one end of the collector connecting resistance R6 of triode Q1, another termination of resistance R6
Ground, the other end of the emitter connecting resistance R3 of triode Q1 and one end of resistance R11, another terminating diode D3's of resistance R5
Anode, one end of the cathode connecting resistance R12 of diode D3 and the inverting input terminal of transport and placing device AR3, the homophase input of transport and placing device AR1
The other end of terminating resistor R11, the other end of the output terminating resistor R12 of transport and placing device AR1 and one end and two poles of resistance R13
The anti-phase input of the anode of pipe D1, the non-inverting input terminal of another termination transport and placing device AR2 of resistance R13, transport and placing device AR2 terminates electricity
One end of R14, resistance R15 are hindered, the other end of resistance R14 is grounded, the output end of another termination transport and placing device AR2 of resistance R15, and two
The cathode of pole pipe D1 connects the collector of triode Q2.
2. three-phase current unbalance automatic control system as described in claim 1, which is characterized in that the partial pressure output circuit packet
Triode Q2 is included, the base stage of triode Q2 connects the emitter of the output end of transport and placing device AR2 and one end of resistance R7, triode Q3,
One end of the emitter connecting resistance R8 of triode Q2, the other end ground connection of resistance R8, the base stage connecting resistance R7's of triode Q3 is another
One end of one end and resistance R9, one end of the collector connecting resistance R10 of triode Q3, another termination letter of resistance R9, resistance R10
Number output port.
3. three-phase current unbalance automatic control system as described in claim 1, which is characterized in that the voltage collection circuit packet
The voltage transformer J1 of model JDG4-0.5 is included, one end of the power supply terminating resistor R1 of voltage transformer J1, resistance R1's is another
One end of one termination capacitor C1 and power supply+5V, one end of the output terminating resistor R2 of voltage transformer J1, the other end of resistance R2
One end of connecting resistance R5, capacitor C1 the other end, the ground terminal ground connection of voltage transformer J1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821000384.7U CN208767796U (en) | 2018-06-27 | 2018-06-27 | Three-phase current unbalance automatic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821000384.7U CN208767796U (en) | 2018-06-27 | 2018-06-27 | Three-phase current unbalance automatic control system |
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| Publication Number | Publication Date |
|---|---|
| CN208767796U true CN208767796U (en) | 2019-04-19 |
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ID=66127956
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821000384.7U Active CN208767796U (en) | 2018-06-27 | 2018-06-27 | Three-phase current unbalance automatic control system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462841A (en) * | 2020-10-29 | 2021-03-09 | 国网山东省电力公司东营市东营区供电公司 | Automatic gear shifting device for real-time monitoring transformer |
-
2018
- 2018-06-27 CN CN201821000384.7U patent/CN208767796U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112462841A (en) * | 2020-10-29 | 2021-03-09 | 国网山东省电力公司东营市东营区供电公司 | Automatic gear shifting device for real-time monitoring transformer |
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| GR01 | Patent grant | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20200617 Address after: No.555, Renmin Road, Nanyang City, Henan Province Patentee after: Nanyang Feilong Power Group Co.,Ltd. Address before: 473000 North Renmin Road, Nanyang City, Henan Province Patentee before: NANYANG FEILONG ELECTRICAL APPLIANCE Co.,Ltd. |