CN201004565Y - An embeddable integrated power measurement and control instrument - Google Patents
An embeddable integrated power measurement and control instrument Download PDFInfo
- Publication number
- CN201004565Y CN201004565Y CNU2006200143881U CN200620014388U CN201004565Y CN 201004565 Y CN201004565 Y CN 201004565Y CN U2006200143881 U CNU2006200143881 U CN U2006200143881U CN 200620014388 U CN200620014388 U CN 200620014388U CN 201004565 Y CN201004565 Y CN 201004565Y
- Authority
- CN
- China
- Prior art keywords
- control instrument
- electric power
- insertion type
- power observation
- synthetic electric
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model discloses a pit mounted integrative electricity instrument which comprises a crust, a power, a micro controller, analog variable output part, remote communication circuit, relay control part, and data collection part; the size of crust 96mm multiplises 96mm. The utility model has a small volume, a few of meters, easy for installing, and cost a little, the measure accuracy is high, and also can satisfy the demands of digitization, intelligentizing and networking and can be pit mounted at the same time.
Description
Technical field
The utility model relates to a kind of electric power observation and control instrument, especially relates to the synthetic electric power observation and control instrument that a kind of insertion type is installed.
Background technology
Along with after the city of China and rural power grids carry out large-scale redevelopment, build, market is more and more higher to the requirement of power automation measure and control instrument, realize with traditional stem-winder and single table, volume is big, single table quantity is many, inconvenience is installed, the cost height, certainty of measurement is low, and is difficult to realize the requirement of digitlization, intellectuality, networking.Market and technically all need a kind of synthetic electric power observation and control instrument, especially can embedded installation, be convenient to be integrated into existing systems.
Summary of the invention
The purpose of this utility model provides the synthetic electric power observation and control instrument that a kind of insertion type is installed, can have programmable functions, remote measurement, remote signalling, remote control, automatically control, electric energy adds up, real-time clock, LCD shows, functions such as digital communication are the intelligent three-phase synthetic electric power observation and control instrument table of one, the collection digitlization, intelligent, networking, measuring process and data analysis are handled realized automation, reduce human error, can substitute electric parameters transducer comprehensively, kilowatt-hour meter, digital displaying meter, data acquisition unit, instruments such as recorder analyser reduce the use of single table.Compact conformation meets 96 general profile frame sizes simultaneously, is convenient to embedded installation.
The purpose of this utility model is achieved in that the synthetic electric power observation and control instrument that a kind of insertion type is installed, and comprises shell, power supply,
And, also comprise,
Microcontroller is arranged in the above-mentioned shell, is used for data operation and processing;
The analog quantity output is connected with above-mentioned microcontroller, the information output after being used for above-mentioned microcontroller handled;
Remote signalling amount input circuit is connected with above-mentioned microcontroller;
The relay control section is connected with above-mentioned microcontroller, is used to receive above-mentioned micro-controller instructions control output;
Part of data acquisition is connected with above-mentioned microcontroller, is used for voltage, current sample and exports to above-mentioned microcontroller;
Above-mentioned shell setting is of a size of 96 millimeters X96 millimeters.
Simultaneously,
The synthetic electric power observation and control instrument that above-mentioned a kind of insertion type is installed also comprises communication module and RS485 interface, passes through the photoelectricity coupling circuit from above-mentioned RS485 interface dateout by above-mentioned communication module.
The synthetic electric power observation and control instrument that above-mentioned a kind of insertion type is installed also comprises display device, is connected with above-mentioned microcontroller, is used for display message.
The synthetic electric power observation and control instrument that above-mentioned a kind of insertion type is installed also comprises some photoelectricity coupling circuits, is connected between above-mentioned analog quantity output, remote signalling amount input circuit, communication module and the above-mentioned microcontroller, is used for photoelectricity and isolates.
The synthetic electric power observation and control instrument that above-mentioned a kind of insertion type is installed also comprises the calculation process module, be connected between above-mentioned part of data acquisition and the described microcontroller, be used for the input signal of above-mentioned part of data acquisition is carried out shaping, computing, amplification, Filtering Processing are converted into digital quantity and feed back to the above-mentioned progressive analytical calculation of microcontroller do.
The synthetic electric power observation and control instrument that above-mentioned a kind of insertion type is installed also comprises the electrical energy pulse circuit, be connected with above-mentioned microcontroller by the photoelectricity coupling circuit, be used for giving above-mentioned microcontroller and show to described display device according to voltage, electric current, power factor (PF), frequency, power, energy value that above-mentioned calculation process module calculates.
The synthetic electric power observation and control instrument that above-mentioned a kind of insertion type is installed also comprises pulse-width modulation circuit, is connected between above-mentioned photoelectricity coupling circuit and the above-mentioned analog quantity output, is used for the circuit shaping, and integral processing is an analog signal with digital signal transition.
It is 0.5 millimeter of positive negative error that above-mentioned shell sizes is provided with positive negative error.
Being that the synthetic electric power observation and control instrument that a kind of insertion type stated is installed also comprises a clock circuit, and is that the microcontroller of stating is connected.
Above-mentioned calculation process module comprises a digital integrator.
Realize above-mentioned technical scheme, just can realize the purpose of this utility model.Can volume little, it is few, easy for installation that table quantity is installed, and cost is low, and the certainty of measurement height is realized the requirement of digitlization, intellectuality, networking.Can embeddedly install simultaneously.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is a part of data acquisition current acquisition circuit diagram of the present utility model;
Fig. 3 is part of data acquisition voltage collection circuit figure of the present utility model;
Fig. 4 is the utility model analog quantity output circuit diagram;
Fig. 5 is the utility model remote signalling amount input circuit figure;
Fig. 6 is the utility model electrical energy pulse circuit diagram;
Fig. 7 is the utility model calculation process module circuit diagram.
Specific embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with accompanying drawing,, can clearerly find out and understand advantage of the present utility model place by description to the utility model preferred embodiment.
As Fig. 1, pass through voltage, current sample, changing large-signal into small-signal send the calculation process module to carry out, signal shaping, computing, amplify, Filtering Processing, to be converted into digital quantity and feed back to the progressive analytical calculation of microcontroller do, utilize the circuit shaping of pulse-width modulation (PWM) generator pulse-width modulation (PWM) after photoelectricity is isolated of microcontroller, integral processing, with digital signal transition is analog signal output, the electrical energy pulse circuits for triggering of pulse generation output link to each other with microcontroller by photoelectrical coupler, the voltage that calculates according to the calculation process module, electric current, power factor (PF), frequency, power, it is that display device shows to man-machine interface that the electric energy equivalence is given microcontroller, and according to its value, the microprocessor controls relay drive circuit is controlled output, also data are exported by RS485 by the communication output circuit, remote signalling amount input circuit is gathered switching value and is linked with microcontroller after photoelectricity is isolated.Can comprise a clock circuit in addition, be connected with microcontroller.
As Fig. 2, sample circuit ABC three-phase current passes through CTA respectively, CTB, the CTC current transformer isolation of sampling, by J1, J2, J3, J4 takes a sample, draw A, B, C electric current and three-phase current vector and, pass through R66 respectively, C16, R69, C17, R70, C18, R71, C19, R22, C20, R73, C21 carry out sending the calculation process module after the RC filtering phase shift.
As Fig. 3, be that voltage passes through the electric resistance partial pressure sample circuit, under three-phase four-wire system, the A phase voltage is by J3, J9, J10, J5 carries out dividing potential drop, again by C22, and C23, C24 carries out Filtering Processing, link to each other with the calculation process module, and carry out energy with current signal and calculate other B, the C two-phase also is the same, isolates by inductance F1 between the neutral line and simulation ground; When at phase three-wire three, will be reference point mutually with B, AC line voltage passes through J31, J11, J32 and PT sample, and post J6, C24, R72 gives the calculation process analysis after the C25 filtering.
As Fig. 4 is analogue quantity output circuit, and microcontroller produces pulse-width modulation (PWM) signal and removes control, module switch U23 through optocoupler 018 isolation, pulse-width modulation (PWM) signal is carried out shaping, and constant amplitude is handled, again through J24, E16, J25, E17 two-stage integration, the pulse-width modulation (PWM) of pulsation is become direct current signal, through J26, J30, U26A carry out filtering and amplify again, after again through U26B, J35 Q3 drives output 4～20MA analog signal.
As Fig. 5 is remote signalling amount input circuit, DI1, DI+ connects the dry contact switching signal, if closed, I1 output low level 0 signal, give microcontroller as resolute I1 output high level 1 signal that rises, DI1 is by R9, and R1 and B1 carry out amplitude limit to signal, again by the U1A negate, the R17 current limliting feeds back to microcontroller behind the driving optocoupler 05.
As Fig. 6 is the electrical energy pulse output circuit, and WAT takes place microcontroller, and WAR signal, R be through R41, R42 and optocoupler Q13, the O14 output that is coupled, the programmable electrical energy pulse of pulsewidth.
As Fig. 7 is the electrical schematic diagram of calculation process module, and digital integrator can be implemented in the frequency domain with the digital integration effect of good precision, with-decay of 20dB/10 octave and a kind of fixing-90 (phase shift effects.The phase-frequency response and the amplitude-frequency response of digital integrator are in close proximity to ideal situation.Digital integrator provides direct interface to the di/dt differential current sensor in the sheet, thereby has saved outside analogue integrator, thereby guarantees fabulous long-time stability, with high-precision voltage, current channel phase matched.The di/dt differential current sensor has thoroughly been eliminated the shortcoming that stray inductance can not be isolated, be existed to manganese copper diverter fully, oversaturated shortcoming when also having eliminated the phase error of traditional current transformer and big electric current, and cost is very cheap, it is desirable current sensor, selection based on current sensor, can turn-off and open this integrator electric current, the di/dt differential current sensor is based on Rogowski coil principle, the inductor of lead generation mutual inductance with the transmission primary current.The Rogowski coil is made of hollow coil usually, thus do not have magnetic hysteresis in theory, saturated or nonlinear problem.The Rogowski coil current sensor is that the rectangle hollow coil of N is formed by the number of turn of arranging around long straight conductor, and coil is vertical with the magnetic field that electric current produced in this lead.The basic operation principle of Rogowski coil is to come the detection of primary electric current by mutual inductance effect.The output of Rogowski coil is proportional to electric current to the derivative of time, so in order to make further signal processing, need to use a digital integrator that the di/dt signal is reduced into i (t) form.
This novel design all is better than the consolidated statement with conventional current detection technique formation aspect a lot.Its linearity error is sent into electric current and the voltage input channel of its core I C (ADE7753) respectively less than the sampled signal of 0.1% voltage in 1000: 1 (60dB) so wide dynamic range, C28, C29 is its power filter, C30, E4 carries out filtering X3 to its 2.5V reference voltage, C40, C41 is its clock generating circuit, U15 is the energy IC of its core, the electric current of input, voltage signal, calculate electric current by it, the effective value of voltage, ADE7753 comprises an active energy register that keeps some seconds full load cumulative power at least, apparent electric energy register and voltage, current effective value, can by serial port read the data of ADE7753.It provides one and the proportional pulse output of meritorious energy (CF) simultaneously.Except effective value calculates, the information of meritorious and apparent energy, ADE7753 provides a quadergy information and various system calibration characteristics that symbol is arranged, such as passage bias calibration, phase alignment and energy calibration.It is also integrated testing circuit that detection line voltage just falls can send power down and overvoltage early warning in advance.And calculate frequency and power factor (PF), and calculate power by multiplier, and add up to calculate electric energy, link to each other with microcontroller by digital interface, further finish data processing, analysis and demonstration.Microcontroller carries out analysis-by-synthesis and judgement to the data that collect, and by analog quantity or digital quantity output external event is carried out corresponding control, with incident, data and the storage of SOE record, is convenient to recollect and data analysis.
Here it is to be noted: those of ordinary skill in the art can make various suitable distortion or replacement on basis of the present utility model, but all these distortion or replacement all should belong to protection range of the present utility model.
Claims (10)
1, a kind of synthetic electric power observation and control instrument of insertion type installation comprises shell, power supply, it is characterized in that also comprising,
Microcontroller is arranged in the described shell, is used for data operation and processing;
The analog quantity output is connected with described microcontroller, is used for the information output after the described microcontroller processing;
Remote signalling amount input circuit is connected with described microcontroller;
The relay control section is connected with described microcontroller, is used to receive described micro-controller instructions control output;
Part of data acquisition is connected with described microcontroller, is used for voltage, current sample and exports to described microcontroller;
Described shell setting is of a size of 96 millimeters X96 millimeters.
2, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 1, it is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises communication module and RS485 interface, passes through the photoelectricity coupling circuit from described RS485 interface dateout by described communication module.
3, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 1 and 2 is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises display device, is connected with described microcontroller, is used for display message.
4, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 1 and 2, it is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises some photoelectricity coupling circuits, be connected between described analog quantity output, remote signalling amount input circuit, communication module and the described microcontroller, be used for photoelectricity and isolate.
5, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 1, it is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises the calculation process module, be connected between described part of data acquisition and the described microcontroller, be used for the input signal of described part of data acquisition is carried out shaping, computing, amplification, Filtering Processing are converted into digital quantity and feed back to the progressive analytical calculation of described microcontroller do.
6, the synthetic electric power observation and control instrument of installing according to claim 1 or 2 or 5 described a kind of insertion types, it is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises the electrical energy pulse circuit, be connected with described microcontroller by the photoelectricity coupling circuit, be used for giving described microcontroller and show to described display device according to voltage, electric current, power factor (PF), frequency, power, energy value that described calculation process module calculates.
7, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 1, it is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises pulse-width modulation circuit, be connected between described photoelectricity coupling circuit and the described analog quantity output, be used for the circuit shaping, integral processing is an analog signal with digital signal transition.
8, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 1 and 2 is characterized in that it is 0.5 millimeter of positive negative error that described shell sizes is provided with positive negative error.
9,, it is characterized in that the synthetic electric power observation and control instrument that described a kind of insertion type is installed also comprises clock circuit, is connected with described microcontroller according to the synthetic electric power observation and control instrument of claim 1 or 2 or 5 or 7 described a kind of insertion types installations.
10, the synthetic electric power observation and control instrument of a kind of insertion type installation according to claim 5 is characterized in that described calculation process module comprises a digital integrator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200143881U CN201004565Y (en) | 2006-07-03 | 2006-07-03 | An embeddable integrated power measurement and control instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200143881U CN201004565Y (en) | 2006-07-03 | 2006-07-03 | An embeddable integrated power measurement and control instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004565Y true CN201004565Y (en) | 2008-01-09 |
Family
ID=39040108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200143881U Expired - Fee Related CN201004565Y (en) | 2006-07-03 | 2006-07-03 | An embeddable integrated power measurement and control instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004565Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594003B (en) * | 2009-06-29 | 2010-12-08 | 江苏金智科技股份有限公司 | Method for achieving background monitoring based on embedded device |
| CN101968522A (en) * | 2010-08-27 | 2011-02-09 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN102854794A (en) * | 2012-08-14 | 2013-01-02 | 王兆进 | Intelligent medium-short wave infrared drying equipment controller |
| CN103595398A (en) * | 2013-11-01 | 2014-02-19 | 天津大学 | Analog quantity optoelectronic isolation conversion circuit based on time ratio PWM |
| CN111060735A (en) * | 2019-12-30 | 2020-04-24 | 重庆莱格特电气有限公司 | Low-voltage intelligent measurement and control system and method |
| CN113671228A (en) * | 2020-05-13 | 2021-11-19 | 深圳亚鼎金科技有限公司 | Embedded electric power measurement and control instrument |
-
2006
- 2006-07-03 CN CNU2006200143881U patent/CN201004565Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594003B (en) * | 2009-06-29 | 2010-12-08 | 江苏金智科技股份有限公司 | Method for achieving background monitoring based on embedded device |
| CN101968522A (en) * | 2010-08-27 | 2011-02-09 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN101968522B (en) * | 2010-08-27 | 2013-07-17 | 杭州远方光电信息股份有限公司 | Electrical property measuring apparatus |
| CN102854794A (en) * | 2012-08-14 | 2013-01-02 | 王兆进 | Intelligent medium-short wave infrared drying equipment controller |
| CN103595398A (en) * | 2013-11-01 | 2014-02-19 | 天津大学 | Analog quantity optoelectronic isolation conversion circuit based on time ratio PWM |
| CN103595398B (en) * | 2013-11-01 | 2016-09-07 | 天津大学 | Analog quantity Phototube Coupling change-over circuit based on time ratio PWM |
| CN111060735A (en) * | 2019-12-30 | 2020-04-24 | 重庆莱格特电气有限公司 | Low-voltage intelligent measurement and control system and method |
| CN113671228A (en) * | 2020-05-13 | 2021-11-19 | 深圳亚鼎金科技有限公司 | Embedded electric power measurement and control instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201004565Y (en) | An embeddable integrated power measurement and control instrument | |
| CN201373895Y (en) | Online monitoring device of zinc oxide arrester (MOA) | |
| CN104569902B (en) | Digital type electric energy meter power consumption measuring device and method | |
| CN201867490U (en) | Calibration device for multiepitope standard electric energy meters | |
| CN201364383Y (en) | Automatic metering calibrating device for leakage current instrument | |
| CN104977459A (en) | Current detection device, electric energy meter made by device and metering method thereof | |
| CN207114670U (en) | A kind of distribution line energy monitor sensor | |
| CN203133146U (en) | Transformer neutral point current measuring device | |
| CN104360140A (en) | Single-phase watt-hour meter null line current measuring method and circuit | |
| CN103682862B (en) | A kind of ring main unit cable connector | |
| CN105301281A (en) | Monitoring method and device for flowing speed of transformer oil flow | |
| CN103176066A (en) | Digitization power quality monitoring device | |
| CN203502555U (en) | Electrical characteristic detecting device for multifunctional high-voltage circuit breaker | |
| CN103023046B (en) | Based on the operating passing zero filtering reactive power compensator that dsp chip controls | |
| CN106768200A (en) | A kind of liquid level sensor device for detecting performance and detection method | |
| CN203101474U (en) | Electrification detector for high-voltage electric system | |
| CN209417268U (en) | A kind of parameter testing diagnostic machine of the pulse power | |
| CN201788222U (en) | AC-DC (alternating current-direct current) compatible isolated voltage sampling circuit | |
| CN204789746U (en) | Current detection device and electric energy meter of making with device | |
| CN201285409Y (en) | Phase voltage detection circuit | |
| CN102928641A (en) | Electronic current transformer | |
| CN209132334U (en) | A kind of vacuum circuit breaker divide-shut brake coil direct current resistance m easurem ent device | |
| CN2916587Y (en) | Electrode resistance measuring and measured value recording and management apparatus for electromagnetic flow meter converter | |
| CN202453402U (en) | Electronic type voltage transformer based on self-excitation source | |
| CN202916326U (en) | Electronic current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Xu Jing Document name: Notification of authorisation and registration |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20150703 |
|
| EXPY | Termination of patent right or utility model |