CN106549401A - A kind of intelligent capacitor integration module for possessing serial line interface OLED display screen - Google Patents
A kind of intelligent capacitor integration module for possessing serial line interface OLED display screen Download PDFInfo
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- CN106549401A CN106549401A CN201611253465.3A CN201611253465A CN106549401A CN 106549401 A CN106549401 A CN 106549401A CN 201611253465 A CN201611253465 A CN 201611253465A CN 106549401 A CN106549401 A CN 106549401A
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- Prior art keywords
- display screen
- oled display
- serial line
- line interface
- intelligent capacitor
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/01—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)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen, including signal conditioning circuit, D/A converting circuit, 32 ARM MCU cores, combination switch, network communication unit and man-machine interaction units.Device is by busbar voltage, electric current is per 64 points of frequency cycle synchronized sampling and transfers to 32 ARM MCU to carry out corresponding data process using finite element impact filtering and sliding window fft algorithm, combination switch is controlled according to Switching Strategy, it is ensured that the precision of capacitor switching.The man-machine interaction unit is made up of OLED display screen, button and toggle switch.Device analysis process the data obtained can from OLED display screen query display successively.The program has the high distinguishing feature of fast reactive power compensation arithmetic accuracy height, speed, capacitor intelligent operation/cutting strategy height optimization, operational reliability.
Description
Technical field
The present invention is related to and belongs to 0.4KV low voltage electric network reactive power compensators field, and in particular to one kind possesses serial line interface
The intelligent capacitor integration module of OLED display screen.
Background technology
Existing intelligent capacitor technical scheme mostly adopts 8 single-chip microcomputers as control core, due to 8 single-chip microcomputers fortune
Calculation ability is weak, and hardware resource is relatively limited, thus the data acquisition of voltage, electric current, phase place by the way of hardware+software come real
Existing, arithmetic speed is low, low precision so that intelligent capacitor product is slow to loading idle change response speed at present, and usually leads
Cause misoperation；And 8 machine operational capabilities are very poor, it is impossible to computing system voltage, current harmonics, so as to the humorous of capacitor cannot be realized
Ripple defencive function, causes power capacitor failure, damage rapidly under big harmonic environment；8 low operational capabilities of machine cause
Complicated Switching Strategy algorithm can not possibly be adopted, therefore the switching of compensation capacitor can only formulate thick according to the size of power factor
Rough control strategy, it is impossible to meet user to the higher and higher technical requirements of intelligent capacitor.
LCD LCD screens are the display modules for adopting in many intelligent capacitor technical schemes instantly, and it is a kind of transmission
Formula Display Technique, the electric crystal electrode made using thin film technique are actively controlled using the method for scanning and show opening for point
And pass, so as to control the ordered state of liquid crystal molecule, and then change shading and light transmission state to reach display purpose.Although LCD
The current comparative maturity of Display Technique, but with the inferior position that also exposes many technological layers of continuing to bring out of new technique, such as：
LCD itself does not light, and needs backlight, and its brightness and contrast depend primarily on the distribution and brightness of backlight, therefore its work(
Consumption is larger, and causes the waste of electric energy；The directivity of its output light causes its visible angle less, and the observation from side occurs
Image fault；Volume is big, and display content is few, it is impossible to realize the miniaturization of device；Response time is longer, about a few tens of milliseconds, such as
More than 40ms, motion blur phenomenon is will result in.The above weakness all makes LCD display gradually meet user under the new situation
The technical need growing to Display Technique, meanwhile, in industrial application, although the display device based on parallel interface is passed
Defeated speed, but the impact of electromagnetic interference is highly susceptible in complicated industrial environment, cause the mistake of data transfer,
So as to affect display effect, therefore, with serial line interface control and carry out data transmission progressively increasingly being widely applied.
In serial line interface, RS232 and SPI interface are most widely used, but due to RS232 transmission speeds it is slower, only
115200bps, it is difficult to applied in the occasion for needing frequently to refresh display content, and RS232 connections do not have synchronised clock,
It is easy to error of transmission, its reliability also therefore suffers from querying.And SPI serial line interfaces transmission speed can reach 10Mbps,
And there is SCLK synchronised clocks, it is ensured that the accuracy of data transfer, therefore its using effect and quality remarkable improvement, with reference to
Its MCU interface can also save resources, reduces cost to greatest extent, therefore be used widely.
The content of the invention
It is an object of the invention to provide a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen, solves
Existing intelligent capacitor because meeting power supply system at present using weak 8 single-chip microcomputers of low side of operational capability as control core
The problem of the complicated reactive requirement of system.Meanwhile, backward LCD Display Techniques are overcome the shortcomings of in man-machine interaction aspect, and adopt
SPI serial line interfaces are connected with MCU, improve data transmission bauds, it is ensured that the accuracy of data.
For achieving the above object, the technical scheme is that a kind of intelligence for possessing serial line interface OLED display screen of design
Electric capacity integration module, with 32 ARM MCU as core, while be aided with signal conditioning circuit, D/A converting circuit, combination switch,
Network communication unit and man-machine interaction unit, constitute reactive power compensator.
Preferably, busbar voltage, current signal directly carry out A/D by 32 ARM MCU Jing after signal conditioning circuit process
Synchronized sampling is changed, and is sampled 64 points per frequency cycle, and then sampled data Jing FIR software filterings calculate bus with fft algorithm
Each phase system voltage, the phase contrast between electric current, voltage and current, each harmonic component of voltage x current, and calculate accordingly and be
Idle, active, apparent energy of uniting and power factor, the reactive power for being calculated are System Reactive Power vacancy, and as compensation
The switching foundation of capacitor, the execution of switching action control bidirectional thyristor and magnetic latching relay reality by 32 ARM MCU
It is existing.
Preferably, the man-machine interaction unit is made up of OLED display screen, button and toggle switch, wherein OLED display screen
Including MCU interfaces, graphic display data RAM, display control unit, command decoder, timing generation unit, the MCU interfaces
For SPI serial line interfaces and connect data, clock and the read-write of MCU and OLED display screen and enable stitch, the display control unit
Pass through SPI serial line interfaces receiving data or instruction under the control of sequential, realize OLED display screen being directed under correspondence sequencing contro
Display content control.
Preferably, the OLED display screen is individually powered using power supply chip, arranges common mode, differential mode inductance, disappear in circuit
Except circuit common mode, differential mode interference, and it is provided with power-off restoration module.
Preferably, the OLED display screen is equipped with corresponding software control strategy, and it is right to realize with reference to the power-off restoration module
The defencive function of OLED display module, it is to avoid the larger harmonic wave or intelligent capacitor switching in circuit causes shadow to display module
Ring, in the case where 60s is without operation, OLED display screen is automatically into resting state.
More particularly, median generatrix voltage of the present invention, current signal Jing device signal conditioning circuit process after, by 32
ARM MCU directly carry out A/D synchronized sampling conversions, per frequency cycle sample 64 points, sampled data Jing after FIR software filterings with
Fft algorithm calculates each harmonic point of each phase voltage of bus-bar system, the phase contrast between electric current, voltage and current, voltage x current
Amount, calculates the idle, active of bus-bar system, apparent energy and power factor accordingly, and in this, as the throwing of compensation capacitor
Foundation is cut, the execution of switching action is to control bidirectional thyristor and magnetic latching relay to complete by 32 ARM MCU.In people
Machine interacts aspect, and using OLED display screen as device display module, the OLED display module includes that MCU interfaces, figure show
According to RAM, display control unit, command decoder, timing generation unit, its MCU interface is SPI serial line interfaces and connects registration
SDIN (data), the SCLK of MCU and OLED display module（Clock）With D/C (read-write is enabled) stitch, the display control unit
Pass through SPI serial line interfaces receiving data or instruction under the control of sequential, realize under correspondence sequencing contro to OLED display screen
Display content is controlled.Meanwhile, display module is individually powered using power supply chip, and increases common mode, differential mode inductance in circuit, disappears
Except circuit common mode, differential mode interference, power-off restoration module is provided with.Software aspects OLED have corresponding Control for Dependability strategy, knot
Close the power-off restoration module and realize the defencive function to OLED display module, it is to avoid the larger harmonic wave or intelligent capacitor in circuit
Device switching is impacted to display module, and in the case where 60s is without operation, OLED display screen is automatically into resting state.
The advantages of the present invention are：There is provided a kind of intelligent capacitor for possessing serial line interface OLED display screen comprehensive
Matched moulds block, solves existing intelligent capacitor because expiring as control core using weak 8 single-chip microcomputers of low side of operational capability
The problem of the current electric power system complexity reactive requirement of foot.Meanwhile, overcome backward LCD Display Techniques in man-machine interaction aspect
Deficiency, and be connected with MCU using SPI serial line interfaces, improve data transmission bauds, it is ensured that the accuracy of data.
The present invention has following features：
1st, designed based on 32 ARM MCU, significantly increased compared with 8 single-chip microcomputer its operational capabilities, therefore can be to system voltage, electricity
Stream carries out the higher calculating of precision, the idle change for loading is responded in time so can guarantee that, it is to avoid because operational capability
Capacitor misoperation caused by the delay institute that weak band is come.
2nd, designed based on 32 ARM MCU, rely on the data-handling capacity which is powerful, quickly realize to system voltage, electricity
The 2-30 sub-frequency analysis computings of stream, therefore harmonic protection function, Eliminate highter harmonic pair can be realized in intelligent capacitor
The impact of capacitor, it is to avoid the damage of low-voltage compensation capacitor, extends its service life, and can make harmonic carcellation as needed
Type intelligent capacitor, effectively can suppress higher hamonic wave and to shove, protection circuit and low-voltage compensation capacitor, it is to avoid overload.
3rd, designed based on 32 ARM MCU, more complicated efficient Switching Strategy can be designed, in practice it has proved that low side 8
Cannot to meet current electric power system increasingly complicated idle only in accordance with the control strategy formulated of size of power factor for single-chip microcomputer
Demand, the present invention adopt height optimization Switching Strategy, and operational reliability is high, and all-wave or fundamental wave algorithm are provided adjust system without
The assessment strategy of work(power, supports that " voltage first " and " reactive power is preferential " two kinds of the control of reactive power compensating strategies carry out capacitor
Switching, to meet the different demand in power supply scene.
4th, OLED display module is connected with MCU by SPI serial line interfaces, and occupancy port is few, and circuit structure is simple, it is easy to real
It is existing, and possess SCLK synchronised clocks, it is ensured that the accuracy of data transfer.
5th, OLED display module is individually powered using power supply chip, and is provided with power-off restoration circuit, coupling system reliability
Control strategy realizes protection and the anti-interference function to display module.
6th, its core layer very thin thickness of OLED display screen, can be less than 1mm, be the 1/3 of lcd screen, therefore can realize
The miniaturization of device.
7th, only the unit lighted in need is just powered up OLED screen curtain, is added the mode small power consumption of backlight, is saved compared with traditional LC D
Electricity.
8th, designed based on OLED screen curtain, due to OLED meeting self-luminescences, light conversion efficiency high, so bright compared with LCD screen
It is many, contrast is bigger, and OLED does not have the restriction of angular field of view, and visual angle can reach 170 °, from side observation also will not distortion.
Description of the drawings
Fig. 1 is the intelligent capacitor integration module system architecture diagram for possessing serial line interface OLED display screen in implementing；
Fig. 2 is the intelligent capacitor integration module data processing for possessing serial line interface OLED display screen in implementing and control flow
Figure；
Fig. 3 is the OLED display module system knot of the intelligent capacitor integration module for possessing serial line interface OLED display screen in implementing
Structure block diagram；
Before Fig. 4 is the OLED display module power supply of the intelligent capacitor integration module for possessing serial line interface OLED display screen in implementing
Put process and power management chip circuit structure diagram；
Fig. 5 is the OLED display module reliability of the intelligent capacitor integration module for possessing serial line interface OLED display screen in implementing
Control strategy flow chart.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is further described.Following examples are only
For clearly illustrating technical scheme, and can not be limited the scope of the invention with this.
The technical scheme that the present invention is embodied as is：
As shown in figure 1, a kind of intelligent capacitor with 32 ARM MCU as core of the present embodiment, with 32 ARM MCU as core
The heart, at the same be aided with signal conditioning circuit, D/A converting circuit, composite switching switch, network communication unit, man-machine interaction unit and
Low-voltage compensation capacitor constitutes reactive power compensator.
As shown in Fig. 2 bus-bar system voltage, electric current Jing transformers are converted to primary signal, Jing after signal conditioning circuit, by
32 ARM MCU directly carry out A/D synchronized sampling conversions, sample 64 points per frequency cycle, sampled data Jing FIR software filterings,
Then with fft algorithm calculate each phase system voltage of bus, the phase contrast between electric current and voltage and current, voltage x current it is each
Order harmonic components, calculate System Reactive Power, active, apparent energy, power factor accordingly, and the reactive power for being calculated is and is
System no-power vacancy, and in this, as the switching foundation of compensation capacitor, 32 ARM MCU are protected by controlling bidirectional thyristor and magnetic
Hold relay to complete the action executing of switching capacitance, then system resurveys the current bus reactive power power shape of analysis
State, to realize quick, real-time, the accurate switching of compensation capacitor.
As shown in figure 3, a kind of application of the serial line interface OLED display screen of the present embodiment in intelligent capacitor, including
MCU interfaces, graphic display data RAM, display control unit, command decoder, timing generation unit, by SPI serial line interfaces
SDIN (data), the SCLK of connection MCU and OLED display module（Clock）With D/C (read-write is enabled) stitch, display control unit
Pass through SPI serial line interfaces receiving data or instruction under the control of sequential, realize OLED display screen being directed under correspondence sequencing contro
Display content control.
As shown in Figure 4, it is shown that the power pack circuit structure diagram of the OLED display module in the present embodiment, using power supply
Chip is individually powered, and increases common mode, differential mode inductance, eliminate circuit common mode, differential mode interference, while being provided with power-off restoration mould in circuit
Block.
As shown in figure 5, for the software reliability control strategy flow chart of the OLED display module in enforcement, in combined circuit
Power-off restoration module OLED display module cut off while the switching action executing of capacitor power, after action executing is finished
Recover its power supply, it is to avoid capacitor switching is impacted to display module, in the case where 60s is without operation OLED display screen from
It is dynamic to enter resting state, realize the defencive function to OLED display module.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, on the premise of without departing from the technology of the present invention principle, some improvements and modifications can also be made, these improvements and modifications
Also should be regarded as protection scope of the present invention.
Claims (5)
1. a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen, it is characterised in that be with 32 ARM MCU
Core, while being aided with signal conditioning circuit, D/A converting circuit, combination switch, network communication unit and man-machine interaction unit, group
Into reactive power compensator.
2. a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen according to claim 1, its feature
It is that busbar voltage, current signal Jing after signal conditioning circuit process directly carry out A/D synchronized samplings by 32 ARM MCU and turn
Change, sample 64 points per frequency cycle, then sampled data Jing FIR software filterings calculate each phase system electricity of bus with fft algorithm
Pressure, the phase contrast between electric current, voltage and current, each harmonic component of voltage x current, and calculate System Reactive Power accordingly, have
Work(, apparent energy and power factor, the reactive power for being calculated are System Reactive Power vacancy, and as the throwing of compensation capacitor
Foundation is cut, the execution of switching action controls bidirectional thyristor and magnetic latching relay realization by 32 ARM MCU.
3. a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen according to claim 1, its feature
It is that the man-machine interaction unit is made up of OLED display screen, button and toggle switch, wherein OLED display screen includes that MCU connects
Mouth, graphic display data RAM, display control unit, command decoder, timing generation unit, the MCU interfaces are SPI serials
Interface simultaneously connects data, clock and the read-write of MCU and OLED display screen and enables stitch, control of the display control unit in sequential
System is lower by SPI serial line interfaces receiving data or instruction, realizes the display content for OLED display screen under correspondence sequencing contro
Control.
4. a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen according to claim 1, its feature
It is that the OLED display screen is individually powered using power supply chip, setting common mode, differential mode inductance in circuit, elimination circuit common mode,
Differential mode interference, and it is provided with power-off restoration module.
5. a kind of intelligent capacitor integration module for possessing serial line interface OLED display screen according to claim 1, its feature
Be that the OLED display screen is equipped with corresponding software control strategy, realize mould being shown to OLED with reference to the power-off restoration module
The defencive function of block, it is to avoid the larger harmonic wave or intelligent capacitor switching in circuit is impacted to display module, in 60s without behaviour
In the case of work, OLED display screen is automatically into resting state.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253465.3A CN106549401A (en) | 2016-12-30 | 2016-12-30 | A kind of intelligent capacitor integration module for possessing serial line interface OLED display screen |
| PCT/CN2017/109509 WO2018121075A1 (en) | 2016-12-30 | 2017-11-06 | Intelligent capacitance integrated module having serial interface oled display screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611253465.3A CN106549401A (en) | 2016-12-30 | 2016-12-30 | A kind of intelligent capacitor integration module for possessing serial line interface OLED display screen |
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| CN106549401A true CN106549401A (en) | 2017-03-29 |
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| CN201611253465.3A Pending CN106549401A (en) | 2016-12-30 | 2016-12-30 | A kind of intelligent capacitor integration module for possessing serial line interface OLED display screen |
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| CN (1) | CN106549401A (en) |
| WO (1) | WO2018121075A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018121075A1 (en) * | 2016-12-30 | 2018-07-05 | 常熟市五爱电器设备有限公司 | Intelligent capacitance integrated module having serial interface oled display screen |
| CN109524884A (en) * | 2017-09-19 | 2019-03-26 | 石家庄裕兆科技有限公司 | A kind of security protection intelligence control system of high-tension switch cabinet |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110071511A (en) * | 2019-05-09 | 2019-07-30 | 浙江朗松智能电力设备有限公司 | A kind of reactive compensation controlling device and capacitor switching method |
| CN114285047B (en) * | 2021-12-27 | 2024-05-31 | 国网江苏省电力有限公司连云港供电分公司 | Active power distribution network informatization interaction platform and method containing distributed power supply access |
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| WO2018121075A1 (en) * | 2016-12-30 | 2018-07-05 | 常熟市五爱电器设备有限公司 | Intelligent capacitance integrated module having serial interface oled display screen |
| CN109524884A (en) * | 2017-09-19 | 2019-03-26 | 石家庄裕兆科技有限公司 | A kind of security protection intelligence control system of high-tension switch cabinet |
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| Publication number | Publication date |
|---|---|
| WO2018121075A1 (en) | 2018-07-05 |
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