CN107769221A - A kind of power supply quality optimizes device and method - Google Patents
A kind of power supply quality optimizes device and method Download PDFInfo
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- CN107769221A CN107769221A CN201610675563.XA CN201610675563A CN107769221A CN 107769221 A CN107769221 A CN 107769221A CN 201610675563 A CN201610675563 A CN 201610675563A CN 107769221 A CN107769221 A CN 107769221A
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000002441 reversible effect Effects 0.000 claims description 29
- 238000005457 optimization Methods 0.000 claims description 19
- 238000001914 filtration Methods 0.000 claims description 17
- 238000004804 winding Methods 0.000 claims description 14
- 239000003990 capacitor Substances 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 5
- 230000000994 depressogenic effect Effects 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 239000010409 thin film Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 2
- 230000010349 pulsation Effects 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract description 2
- 230000005611 electricity Effects 0.000 description 6
- 230000009466 transformation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- APTZNLHMIGJTEW-UHFFFAOYSA-N pyraflufen-ethyl Chemical compound C1=C(Cl)C(OCC(=O)OCC)=CC(C=2C(=C(OC(F)F)N(C)N=2)Cl)=C1F APTZNLHMIGJTEW-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
-
- 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
- H02J3/12—Circuit arrangements for AC mains or AC distribution networks for adjusting voltage in AC networks by changing a characteristic of the network load
-
- 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)
- Control Of Electrical Variables (AREA)
- Inverter Devices (AREA)
Abstract
The device and method for being used to improve grid supply quality the present invention relates to one is far below allowed band for supplying power allocation line end voltage, voltage pulsation simultaneously is very big, low voltage electric network generally frequently occurs overload phenomenon, low-voltage circuit loss is caused to significantly increase, the power factor of whole low voltage electric network is low, mains ripple is big, and power supply qualification rate is low, and causes significant damage to electric equipment.Power supply quality is installed additional for low voltage electric network optimizes device, supply voltage can be automatically adjusted in real time, stabilize it in standard value, can directly it be provided to electrical equipment idle, the line loss of low-voltage network is greatly lowered, make it is idle reach balance on the spot, improve the actual transmission line capability of power distribution network, harmonic carcellation electric current is in loss caused by circuit and to interference caused by other electrical equipments.
Description
Technical field
The present invention relates to a device and method for improving grid supply quality.
Background technology
With the improvement of people ' s living standards with the popularization of household electrical appliance, low-voltage customer, particularly residential customer electricity consumption
Amount increases substantially year by year, but the distribution line such as factories and miness unit, residential quarters, shop renovates, speed relatively lags behind, and causes
Line end voltage is far below allowed band, while voltage pulsation is very big, and low voltage electric network generally frequently occurs overload phenomenon, washes
The non-illumination load such as clothing machine, air conditioner, television set is difficult to normal work, and causes significant damage to electric equipment.Simultaneously as
Newly-increased electrical load is very big to reactive power demand largely using slewing and power electronic equipments such as motor, compressors,
And a large amount of higher harmonic currents are produced, thus cause low-voltage circuit loss to significantly increase, the power factor of whole low voltage electric network is low,
Mains ripple is big, and power supply qualification rate is low.
The preferred plan to solve the above problems is the principle deferred to local compensation, administered on the spot, online in low-voltage distribution,
Directly install reactive-load compensation, harmonic wave control and voltage self-checking device additional.For low voltage electric network install additional reactive-load compensation, harmonic wave control and
Voltage self-checking device, supply voltage can be automatically adjusted in real time, stabilized it in standard value, can directly be provided to electrical equipment
It is idle, the line loss of low-voltage network is greatly lowered, make it is idle reach balance on the spot, improve the actual transmission of electricity appearance of power distribution network
Amount；Harmonic current caused by the user equipment of low-voltage network is filtered out, harmonic carcellation electric current is in loss caused by circuit and to it
Disturbed caused by his electrical equipment；Improve 10/0.4kV transformer station high-voltage side bus securities；Significantly improve due to high-tension line thunderbolt,
The abnormal conditions such as voltage flicker caused by the reasons such as instantaneous short circuit, overload, protect the safety of electrical equipment.
The content of the invention
The purpose of the present invention is a kind of power supply quality optimization device and method of design, and it has, and cost is low, and reliability is high, dimension
Shield is convenient, can improve power factor of electric network, filter out mains by harmonics, regulation and hidden determine power network supply voltage.
A kind of power supply quality optimization device designed by the present invention, it includes：
One AC power input, includes No.1 port and No. two ports；
One transformer, one end of the transformer secondary are connected with AC power No.1 port, transformer secondary it is another
Output end of the one end as apparatus of the present invention；
One single-phase reversible voltage-multiplying circuit, for adjusting ac-side current and DC voltage；
One input reactance device, its one end couple with the ac power output mouth, its other end with it is described single-phase
The AC connection of reversible voltage-multiplying circuit, for limiting, smooth AC power electric current；
One DC filtering circuit, DC side of its positive and negative end respectively with the single-phase reversible voltage-multiplying circuit are connected, wherein
Point is connected with No. two ports of the AC power and one end of the transformer primary side, for realizing voltage filter function；
One single-phase inversion circuit, its DC side are connected with the DC side of the DC filtering circuit, will be straight for realizing
Stream electricity is changed into alternating current, and its AC is connected with one end of the transformer primary side, so that by the single-phase inversion circuit
Output exchange, which is electrically coupled and become, is depressed into vice-side winding；
One by-pass switch, it is connected with the primary side or secondary of the transformer, for apparatus of the present invention to be standby or during failure
Protection；
One AC voltage sensor, its input is connected with two ports of the AC power respectively, for detecting
The voltage of AC power；
One direct current voltage sensor circuit, its input is connected with the DC filtering circuit, for detecting direct current
Pressure；
One current sensor, it is coupled with an input port of the AC power, or the output end with the present apparatus
Connection, for detecting the electric current of AC power or present apparatus output end；
One control unit, couple with the AC voltage sensor, direct current voltage sensor circuit, current sensor,
And gather AC supply voltage, DC voltage, ac current signal；Described control unit also with the single-phase reversible times of piezoelectricity
Road, single-phase inversion circuit are connected, to control its working condition；Described control unit also couples with the by-pass switch, control
Its break-make.
Above-mentioned AC power input, it is the single phase alternating current power supply input of 220V voltage class or 400V voltage class.
Above-mentioned single-phase reversible voltage-multiplying circuit, include the semiconductor power switch devices such as two or two groups IGBT composition
One bridge arm.
Above-mentioned DC filtering circuit, it is to include two or two groups, by electrolytic capacitor or thin film capacitor or super
The circuit that capacitor is connected into.
Above-mentioned single-phase inversion circuit, it is include the semiconductor power switch devices such as two or two groups IGBT composition one
Individual bridge arm.
A kind of power supply quality designed by the present invention optimizes device, in addition to one group is parallel to the transformer secondary winding
Low-pass filter circuit, the low-pass filter circuit includes ac filter capacitor.
Above-mentioned control unit includes microcontroller (CPU) chip, the microcontroller be stored with executable code and
Data, the control to the single-phase reversible voltage-multiplying circuit, single-phase inversion circuit, by-pass switch can be achieved.
The present invention described by-pass switch, be made up of contactor or breaker or controllable silicon.
A kind of power supply quality optimization method designed by the present invention, comprises the following steps：
AC supply voltage and electric current are gathered by AC voltage sensor and current sensor by control unit；
Measured power factor is calculated according to the phasometer of the voltage of above-mentioned collection, electric current；
The above-mentioned measured power factor being calculated is contrasted with the ideal power factor value set；
When measured power factor and ideal power factor value have deviation, adjusted in real time by control unit to single-phase reversible
The pwm pulse duty factors that voltage-multiplying circuit is sent, so as to adjust the size of AC reactive current, reduce above-mentioned deviation, reach
The purpose of firm power factor；
The DC voltage of DC filtering circuit is gathered by direct current voltage sensor circuit by control unit；
The above-mentioned DC voltage collected is contrasted with the ideal DC voltage set；
When surveying DC voltage and ideal DC magnitude of voltage has deviation, adjusted in real time by control unit to single-phase reversible
The pwm pulse duty factors that voltage-multiplying circuit is sent, so as to adjust the size of AC watt current, reduce above-mentioned deviation, reach
The purpose of stable DC voltage；
According to the actual measurement AC supply voltage value collected, contrasted with set preferable ac voltage；
When the AC supply voltage value of actual measurement and preferable ac voltage have deviation, adjusted in real time by control unit to
The pwm pulse duty factors that single-phase inversion circuit is sent, so as to adjust the AC voltage of single-phase inversion circuit, and then adjust transformation
Device vice-side winding voltage, after the vice-side winding voltage is superimposed with AC supply voltage, a total output voltage is formed, so as to reach
To the purpose of regulation output voltage；
A kind of power supply quality optimization method designed by the present invention, it also includes step：
According to the current value collected, harmonic current is calculated；
The pwm pulse duty factors sent to the single-phase reversible voltage-multiplying circuit are adjusted in real time by control unit, so as to adjust
The ac-side current of single-phase reversible voltage-multiplying circuit is saved, it is produced an electricity opposite with the above-mentioned harmonic current symbol calculated
Stream, to realize the purpose for eliminating AC power harmonic current.
Brief description of the drawings
Fig. 1 is the electrical structure diagram of power supply quality optimization device of the present invention.
Fig. 2 is one embodiment figure of power supply quality optimization device of the present invention.
Embodiment
Below in conjunction with the accompanying drawings, power supply quality optimization device implementation of the present invention and the course of work is discussed in detail.
As shown in figure 1, it is the electrical structure diagram of power supply quality optimization device.Wherein AC power is by No.1 port 1 and two
Number port 2 is accessed, and No.1 port is connected with the Single port of the vice-side winding of transformer 8, the another port of the vice-side winding of transformer 8
Output port as apparatus of the present invention.Inductance 3 is connected with the AC of single-phase reversible voltage-multiplying circuit 4, No. two ports and direct current
The midpoint connection of filter circuit 5, the DC side of single-phase reversible voltage-multiplying circuit 4 are connected with the positive and negative end of DC filtering circuit 5.It is defeated
Enter alternating current to filter after single-phase reversible voltage-multiplying circuit 4 is modulated, then through DC filtering circuit 5, be changed into direct current.
The DC side of single-phase inversion circuit 6 is connected with the positive and negative end of DC filtering circuit 5.The exchange of single-phase inversion circuit 6
Side connects primary side one end of transformer 8, and the primary side other end of transformer 8 is connected with the midpoint of DC filtering circuit 5.Single-phase inversion
Circuit 6 exports the voltage after PWM, puts on the primary side winding of transformer 8, the voltage after the transformation of transformer 8,
It is connected in series with No.1 port, so as to play a part of adjusting output voltage.
The vice-side winding of transformer 8 by-pass switch 7 in parallel simultaneously, bypass path during as failure and maintenance.
Control unit 11 is connected with single-phase reversible voltage-multiplying circuit 4 and single-phase inversion circuit 6, for controlling wherein semiconductor to open
The switching state of device is closed, while whether working properly detect its.
Control unit 11 connects with AC voltage sensor 10, direct current voltage sensor circuit 12, current sensor 9 simultaneously
Connect, for detecting the input ac power voltage of apparatus of the present invention, electric current and the voltage of DC filtering circuit 5.
Fig. 2 is one embodiment figure of power supply quality optimization device of the present invention, and its AC power, which comes in and goes out, can access 220V friendships
Stream electricity, wherein single-phase reversible voltage-multiplying circuit 4 is made up of the IGBT single-phase bridges 14 of two series connection, its AC connects with output port
Connect, and single-phase inversion circuit 6 is made up of the IGBT single-phase bridges 15 of two series connection, its AC is connected with transformer primary side.
Low-pass filter circuit 16 is in parallel with by-pass switch 7, for filtering out the dither current of transformer secondary.
A kind of power supply quality optimization method designed by the present invention, its course of work are realized by following steps：
AC supply voltage and electric current are gathered by AC voltage sensor 10 and current sensor 9 by control unit 11,
Voltage, the phasometer of electric current according to being gathered calculate measured power factor, by the above-mentioned measured power factor being calculated
Contrasted with the ideal power factor value of setting, when measured power factor and ideal power factor value have deviation, pass through control
Unit 6 processed adjusts the pwm pulse duty factors sent to single-phase reversible voltage-multiplying circuit 4 in real time, so as to adjust AC power input
The size of reactive current, reduce above-mentioned deviation, reach the purpose of firm power factor.
Control unit 11 by direct current voltage sensor circuit gather DC filtering circuit DC voltage, and with setting
Ideal DC voltage is contrasted, real by control unit 11 when surveying DC voltage and ideal DC magnitude of voltage has deviation
When adjust the pwm pulse duty factors sent to single-phase reversible voltage-multiplying circuit 4, so as to adjust the size of AC watt current, make
Above-mentioned deviation reduces, and reaches the purpose of stable DC voltage；
Control unit 11 is according to the actual measurement AC supply voltage value collected, with set preferable ac voltage pair
Than when the AC supply voltage value of actual measurement and preferable ac voltage have deviation, being adjusted in real time to list by control unit 11
The pwm pulse duty factors that phase inverter circuit 6 is sent, so as to adjust the AC voltage of single-phase inversion circuit 6, and then adjust transformation
The vice-side winding voltage of device 8, the vice-side winding voltage is with after the voltage superposition of AC power input, forming a total output electricity
Pressure, so as to reach the purpose of regulation output voltage；
Control unit 11 calculates harmonic current, adjusted in real time by control unit 11 according to the current value collected
The pwm pulse duty factors sent to the single-phase reversible voltage-multiplying circuit 4 are saved, so as to adjust the exchange of single-phase reversible voltage-multiplying circuit 4
Side electric current, it is set to produce an electric current opposite with the above-mentioned harmonic current symbol calculated, to realize that elimination AC power is defeated
Enter the purpose of harmonic current.
Claims (10)
1. a kind of power supply quality optimizes device, it is characterised in that：It includes：
One AC power input, includes No.1 port and No. two ports；
One transformer, one end of the transformer secondary are connected with AC power No.1 port, the other end of transformer secondary
Output end as apparatus of the present invention；
One single-phase reversible voltage-multiplying circuit, for adjusting ac-side current and DC voltage；
One input reactance device, its one end couple with the ac power output mouth, its other end with it is described single-phase reversible
The AC connection of voltage-multiplying circuit, for limiting, smooth AC power electric current；
One DC filtering circuit, DC side of its positive and negative end respectively with the single-phase reversible voltage-multiplying circuit are connected, its midpoint with
No. two ports of the AC power and one end connection of the transformer primary side, for realizing voltage filter function；
One single-phase inversion circuit, its DC side are connected with the DC side of the DC filtering circuit, for realizing direct current
It is changed into alternating current, its AC is connected with one end of the transformer primary side, so as to by the output of the single-phase inversion circuit
Exchange, which is electrically coupled and become, is depressed into vice-side winding；
One by-pass switch, it is connected with the primary side or secondary of the transformer, for apparatus of the present invention to be standby or guarantor during failure
Shield；
One AC voltage sensor, its input are connected with two ports of the AC power respectively, are exchanged for detecting
The voltage of power supply；
One direct current voltage sensor circuit, its input is connected with the DC filtering circuit, for detecting DC voltage；
One current sensor, it is coupled with an input port of the AC power, or is connected with the output end of the present apparatus,
For detecting the electric current of AC power or present apparatus output end；
One control unit, couple with the AC voltage sensor, direct current voltage sensor circuit, current sensor, and adopt
Collect AC supply voltage, DC voltage, ac current signal；Described control unit also with the single-phase reversible voltage-multiplying circuit, list
Phase inverter circuit is connected, to control its working condition；Described control unit also couples with the by-pass switch, controls the logical of its
It is disconnected.
A kind of 2. power supply quality optimization device according to claim 1, it is characterised in that：Described AC power input,
It is the single phase alternating current power supply input of 220V voltage class or 400V voltage class.
A kind of 3. power supply quality optimization device according to claim 1, it is characterised in that：Described single-phase reversible times of piezoelectricity
Road, it is a bridge arm for including the semiconductor power switch devices such as two or two groups IGBT composition.
A kind of 4. power supply quality optimization device according to claim 1, it is characterised in that：Described DC filtering circuit,
It is the circuit for including two or two groups, being connected into by electrolytic capacitor or thin film capacitor or ultracapacitor.
A kind of 5. power supply quality optimization device according to claim 1, it is characterised in that：Described single-phase inversion circuit,
It is a bridge arm for including the semiconductor power switch devices such as two or two groups IGBT composition.
6. a kind of power supply quality optimization device according to claim 1, it is characterised in that it also includes：One group is parallel to
The low-pass filter circuit of the transformer secondary winding, the low-pass filter circuit include ac filter capacitor.
A kind of 7. power supply quality optimization device according to claim 1, it is characterised in that：Described control unit includes
Microcontroller (CPU) chip, the microcontroller are stored with executable code and data, can be achieved to the single-phase reversible multiplication of voltage
The control of circuit, single-phase inversion circuit, by-pass switch.
A kind of 8. power supply quality optimization device according to claim 1, it is characterised in that：Described by-pass switch, be by
What contactor or breaker or controllable silicon were formed.
9. a kind of power supply quality optimization method, it is characterised in that it comprises the following steps：
AC supply voltage and electric current are gathered by AC voltage sensor and current sensor by control unit；
Measured power factor is calculated according to the phasometer of the voltage of above-mentioned collection, electric current；
The above-mentioned measured power factor being calculated is contrasted with the ideal power factor value set；
When measured power factor and ideal power factor value have deviation, adjusted in real time by control unit to single-phase reversible multiplication of voltage
The pwm pulse duty factors that circuit is sent, so as to adjust the size of AC power input reactive current, reduce above-mentioned deviation, reach
To the purpose of firm power factor；
The DC voltage of DC filtering circuit is gathered by direct current voltage sensor circuit by control unit
The above-mentioned DC voltage collected is contrasted with the ideal DC voltage set；
When surveying DC voltage and ideal DC magnitude of voltage has deviation, adjusted in real time by control unit to single-phase reversible multiplication of voltage
The pwm pulse duty factors that circuit is sent, so as to adjust the size of AC watt current, reduce above-mentioned deviation, reach stable
The purpose of DC voltage；
According to the actual measurement AC supply voltage value collected, contrasted with set preferable ac voltage；
When the AC supply voltage value of actual measurement and preferable ac voltage have deviation, adjusted in real time to single-phase by control unit
The pwm pulse duty factors that inverter circuit is sent, so as to adjust the AC voltage of single-phase inversion circuit, and then adjust transformer pair
Side winding voltage, after the vice-side winding voltage is superimposed with AC supply voltage, a total output voltage is formed, is adjusted so as to reach
Save the purpose of output voltage.
10. a kind of power supply quality optimization installation method according to claim 8, it is characterised in that further comprising the steps of：
According to the current value collected, harmonic current is calculated；
The pwm pulse duty factors sent to the single-phase reversible voltage-multiplying circuit are adjusted in real time by control unit, so as to adjust list
The ac-side current of mutually reversible voltage-multiplying circuit, it is set to produce an electric current opposite with the above-mentioned harmonic current symbol calculated,
To realize the purpose for eliminating AC power input harmonic current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675563.XA CN107769221A (en) | 2016-08-17 | 2016-08-17 | A kind of power supply quality optimizes device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610675563.XA CN107769221A (en) | 2016-08-17 | 2016-08-17 | A kind of power supply quality optimizes device and method |
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| CN107769221A true CN107769221A (en) | 2018-03-06 |
Family
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| CN201610675563.XA Pending CN107769221A (en) | 2016-08-17 | 2016-08-17 | A kind of power supply quality optimizes device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365605A (en) * | 2018-03-08 | 2018-08-03 | 西安爱科赛博电气股份有限公司 | A kind of low-voltage network three-phase line low-voltage governing system and method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2211710A1 (en) * | 1995-02-01 | 1996-08-08 | Westinghouse Electric Corporation | Dynamic power and voltage regulator for an ac transmission line |
| JPH11178216A (en) * | 1997-12-11 | 1999-07-02 | Hitachi Ltd | Uninterruptible power system |
| JP2001275255A (en) * | 2000-03-29 | 2001-10-05 | Shizuki Electric Co Inc | Voltage compensator |
| JP2002191125A (en) * | 2000-12-20 | 2002-07-05 | Fuji Electric Co Ltd | Power factor improvement device |
| JP2003061250A (en) * | 2001-08-10 | 2003-02-28 | Mitsubishi Electric Corp | Voltage fluctuation compensator |
| JP2006141174A (en) * | 2004-11-15 | 2006-06-01 | Densei Lambda Kk | Power supply device |
| WO2009101234A1 (en) * | 2008-02-15 | 2009-08-20 | Wind To Power System, S.L. | Series voltage compensator and method for series voltage compensation in electrical generators |
| JP2015116052A (en) * | 2013-12-12 | 2015-06-22 | 三菱電機株式会社 | Elevator and cage power supply device |
| CN205791529U (en) * | 2016-05-26 | 2016-12-07 | 新能动力（北京）电气科技有限公司 | A kind of power supply quality optimizes device |
| CN206283260U (en) * | 2016-08-17 | 2017-06-27 | 新能动力（北京）电气科技有限公司 | A kind of power supply quality optimizes device |
| CN107453360A (en) * | 2016-06-01 | 2017-12-08 | 新能动力（北京）电气科技有限公司 | A kind of power supply quality optimizes device and method |
-
2016
- 2016-08-17 CN CN201610675563.XA patent/CN107769221A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2211710A1 (en) * | 1995-02-01 | 1996-08-08 | Westinghouse Electric Corporation | Dynamic power and voltage regulator for an ac transmission line |
| JPH11178216A (en) * | 1997-12-11 | 1999-07-02 | Hitachi Ltd | Uninterruptible power system |
| JP2001275255A (en) * | 2000-03-29 | 2001-10-05 | Shizuki Electric Co Inc | Voltage compensator |
| JP2002191125A (en) * | 2000-12-20 | 2002-07-05 | Fuji Electric Co Ltd | Power factor improvement device |
| JP2003061250A (en) * | 2001-08-10 | 2003-02-28 | Mitsubishi Electric Corp | Voltage fluctuation compensator |
| JP2006141174A (en) * | 2004-11-15 | 2006-06-01 | Densei Lambda Kk | Power supply device |
| WO2009101234A1 (en) * | 2008-02-15 | 2009-08-20 | Wind To Power System, S.L. | Series voltage compensator and method for series voltage compensation in electrical generators |
| JP2015116052A (en) * | 2013-12-12 | 2015-06-22 | 三菱電機株式会社 | Elevator and cage power supply device |
| CN205791529U (en) * | 2016-05-26 | 2016-12-07 | 新能动力（北京）电气科技有限公司 | A kind of power supply quality optimizes device |
| CN107453360A (en) * | 2016-06-01 | 2017-12-08 | 新能动力（北京）电气科技有限公司 | A kind of power supply quality optimizes device and method |
| CN206283260U (en) * | 2016-08-17 | 2017-06-27 | 新能动力（北京）电气科技有限公司 | A kind of power supply quality optimizes device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108365605A (en) * | 2018-03-08 | 2018-08-03 | 西安爱科赛博电气股份有限公司 | A kind of low-voltage network three-phase line low-voltage governing system and method |
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