CN202524168U - Power quality data monitoring device - Google Patents
Power quality data monitoring device Download PDFInfo
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- CN202524168U CN202524168U CN2012201042099U CN201220104209U CN202524168U CN 202524168 U CN202524168 U CN 202524168U CN 2012201042099 U CN2012201042099 U CN 2012201042099U CN 201220104209 U CN201220104209 U CN 201220104209U CN 202524168 U CN202524168 U CN 202524168U
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Abstract
The utility model relates to a power quality data monitoring device. The power quality data monitoring device comprises a base plate, a control plate and a display unit, wherein the control plate is used for data processing and communication and comprises an analog switch power supply, a signal sensor, an operational amplifier, an A/D conversion chip, a control chip and a communication module, the analog switch power supply is respectively connected with the operational amplifier, the A/D conversion chip, the control chip and a display unit, an output terminal of the signal sensor is connected with the operational amplifier, the operational amplifier is connected with the control chip through the A/D conversion chip, and an output terminal of the control chip is connected with the display unit through the communication module. Compared with the prior art, the power quality data monitoring device has advantages of convenient mounting, simple wiring, convenient maintenance, small engineering quantity, high precision of data acquisition, rapid data processing, stable control system, easy networking, strong interference resistance, and the like.
Description
Technical field
The utility model relates to a kind of intelligent grid power quality data monitoring equipment, especially relates to a kind of power quality data monitoring device.
Background technology
The quality of power supply (Power Quality) says that from the strictness meaning leading indicator of weighing the quality of power supply has voltage, frequency and waveform.Say from universal significance to be meant quality supply, comprise quality of voltage, electric current quality, power supply quality and use electricity quality.It can be defined as: cause the deviation of voltage, electric current or the frequency of power consumption equipment fault or cisco unity malfunction, its content comprises frequency departure, voltage deviation, voltage fluctuation and flicker, three-phase imbalance, temporary transient or transient overvoltage, wave distortion (harmonic wave), voltage dip, interruption, rises and power supply continuity etc. temporarily.
Along with the raising of development and national economy and people's lives, the requirement of the quality of power supply is improved constantly, the requirement of quality of power supply standard is also being improved constantly.In recent years, country has issued a collection of quality of power supply standard, has adapted to the requirement of both sides of supply and demand in production run basically.
Before, what the dynamometer instrument meter in the industry was mainly measured all is voltage, these master datas of electric current, can not effectively monitor power quality data such as three-phase imbalance, voltage fluctuation and flicker in the electric power system.Therefore can not do a perfect analysis to the system situation in the electrical network.
Intelligent grid; It is exactly the intellectuality of electrical network; Also be called as " electrical network 2.0 "; It is to be based upon on the basis of integrated, high-speed bidirectional communication network, and sensing through the advanced person and measuring technique, advanced equipment and technology, advanced control method and advanced DSS The Application of Technology realize reliable, the safety, economy of electrical network, efficient, environmental friendliness and target safe in utilization.
China energy expert Wu Jiandong proposes " interactive electrical network " notion.Interactive electrical network, English is Interactive Smart Grid, it is contained the implication of intelligent grid wherein.Interactive electrical network is defined as: on open and interconnected information pattern basis; Through loading system digital device and upgrading electrical network NMS; Realizing the full-range intellectuality of power industry, informationization, classification interactive managements such as generating, transmission of electricity, power supply, electricity consumption, client's sale of electricity, electrical network graded dispatching, integrated service, is that the comprehensive efficient of having gathered Industrial Revolution, technological revolution and management revolution is changed.It will reproduce the information circuits of electrical network, make up the novel feedback system of user, promote electrical network and be energy-conservation infrastructure whole transition, improve energy efficiency, reduce client cost, reduce greenhouse gas emission, create the maximization that electrical network is worth.
Interactive electrical network can also through electric terminal with between the user, form network interdynamic between user and the grid company and immediately be connected; Realize that electric power data reads in real time, at a high speed, two-way general effect, the data in can integration system are improved the integrated effect of central power system; Realize effective critical load protection; Realize the seamless interlinkage of various power supplys and client terminal and electrical network, can optimize the management of electrical network thus, electrical network is promoted the new mode for interactive running; Form the brand-new service function of electrical network, improve reliability, availability and the overall efficiency of whole electrical network.
In the nearly 20 years evolution of automation of transformation substations technology, along with popularizing of intelligent electronic device, form many individual event automated systems, relatively independent between these systems, there is not direct electrical link, manage, safeguard by the different departments of electric power enterprise usually.Because of a great variety, the interface and the function that provide have nothing in common with each other, equipment room can not be shared information, forms " island of automation " problem, not only increases cost, also influences the reliability of system, increases user's maintenance workload.Present various Integrated Solution all can not provide high-level information sharing.Under such background, International Electrotechnical Commission has proposed the IEC61850 standard.This is a based on network communication system standard, comprises many-sided contents such as object-oriented, communication network, interface and mapping, systems and management project.
IEC61850 is as the Standards Code of digital transformer substation; Have characteristics such as unification, standard, self-described, easy expansion, it is of a great variety thoroughly to have solved present traditional transformer station stipulations, incompatible; Be difficult to characteristics such as expansion, unique stipulations of transformer station after will becoming.
The utility model content
The purpose of the utility model is exactly to provide a kind of precision high, low in energy consumption, easy for installation and satisfy the power quality data monitoring device of digital transformer substation standard criterion in order to overcome the defective that above-mentioned prior art exists.
The purpose of the utility model can realize through following technical scheme:
A kind of power quality data monitoring device; It is characterized in that; Comprise base plate, be used for the control board and the display unit of data processing and communication; Described control board comprises analog switched power supply, signal transducer, operational amplifier, A/D conversion chip, control chip and communication module, and described analog switched power supply is concatenation operation amplifier, A/D conversion chip, control chip and display unit respectively, the output concatenation operation amplifier of described signal transducer; Described operational amplifier is through A/D conversion chip and control chip, and the output of described control chip is connected with display unit through communication module;
Signal transducer is transferred to control chip with the signal that collects after through operational amplifier and A/D conversion chip, and control chip shows transfer of data in real time to display unit after to signal processing, realizes the online in real time monitoring.
Described communication module comprises 232 communication chips, 485 communication modules and ethernet communication module.
Described base plate is provided with binding post and the ethernet communication interface that connects outside sampling; Described binding post connects analog switched power supply and signal transducer respectively, and described ethernet communication interface is connected with the remote terminal monitoring equipment through said ethernet communication module.
Also comprise the DC/DC transducer; This DC/DC transducer input is connected with analog switched power supply; Output is connected with A/D conversion chip, amplifier amplifier respectively; The part voltage transitions that described DC/DC transducer is exported analog switched power supply becomes the normal working voltage of A/D conversion chip, amplifier amplifier, and described DC/DC transducer is for isolating the voltage regulation type transducer.
Described signal transducer comprises the voltage transformer summation current transformer.
Described operational amplifier is the instrument operational amplifier.
Described A/D converter chip is 16 6 passage A/D converter chips.
Described control chip comprises dsp chip and ARM chip; The input of described dsp chip connects said A/D conversion chip; The output of dsp chip connects the ARM chip, and described ARM chip is connected with display unit through communication module, and described dsp chip is responsible for the collection of digital signal and is converted various digital signals to various power quality datas; Described ARM chip reads various power quality datas from dsp chip, and through communication module data is sent to display unit.
Described display unit is a touch LCD screen.
Compared with prior art, the utlity model has following advantage:
1) high-precision data transaction: the utility model adopts the A/D converter chip of 16 6 passages and the instrument amplifier that error is merely some thousandths of; Data acquisition is through the instrument amplifier; Be transferred to high-precision A/D conversion chip again, and finally calculate accurate data through algorithm by control chip;
2) ability of adaptation site environment is strong: the current sample of the utility model carries out the collection of data through the mode of the external instrument transformer in outside, has very high changeability and adaptability, according to the different situations of site environment, is equipped with the different external instrument transformer;
3) have jumbo memory function and preserve data unload function: the utility model inside is furnished with the large-capacity data storage chip; Can supply to store the historical data of some months; This type historical data all is all kinds of qualities of power supply in the measure field electric power system, and the various historical datas of being preserved all can download in the USB flash disk through USB port;
4) rich data and graphical display: the utility model can show a large amount of power quality datas; For example voltage, current distortion rate, 1～50 subharmonic, Voltage unbalance and current imbalance etc.; These all are the power quality datas that conventional electric power table meter is not had, and the utility model adopted high-resolution touch liquid crystal display, and it is more convenient to use; Interface displayed is more friendly, and the handover operation between different interfaces is more smooth;
5) multiple parameter can be established: the utility model provides miscellaneous parameter, can supply the user to be directed against different measuring objects and carry out corresponding setting, has increased the flexibility that monitor uses greatly, and is with respect to conventional electric power table meter, more convenient in the use;
6) the external communication port that enriches, networking is light: the utility model has adopted bus structures, can expand various communication interfaces; Support the IEC61850 stipulations; Satisfy the transformer substation communication system, but multiple devices compose in parallel with PC and other multiple host computer platform and carry out communication, make the user can realize remote monitoring; The real-time Monitoring Data of host computer platform can be passed through in the equipment erecting bed of noting be used in; Satisfy the construction requirements of the automation of transformation substations, make things convenient for management and equipment room interconnected of various IED in the transformer station, realize the seamless link of system;
7) acp chip is powerful: the utility model adopt the most modern microprocessor and and Digital Signal Processing, the data processing function of dsp chip is powerful, can rapidly the data of being sampled be calculated and analyze; And ability is process mass data simultaneously, and the ARM chip is advantageous in the control of hardware, and response speed is very fast; And it is low in energy consumption; Can be very smooth all kinds of operational orders of response, and the abundant function that extends out is arranged, support various communication interfaces;
8) more advanced, more effective algorithm: the utility model adopts novel fast Fourier analysis to combine with instantaneous reactive; Can extract the chip resulting harmonic content data of sampling fast and accurately; Reach the effect of harmonic analysis accurately, and the flickering and the fluction analysis of the utility model employing total digitalization, more effective than the conventional analogue component analysis; Quicker, integrated higher;
9) power consumption is very low: during operate as normal, power consumption is less than 10VA;
10) easy for installation: only need with the three-phase voltage of equipment under test and with being connected of extraneous instrument transformer, get final product operate as normal, other equipment of peripheral hardware connect again.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the workflow diagram of the utility model.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated.
Embodiment
As shown in Figure 1, ACT-X power quality data monitoring device, comprise base plate, be used for the control board and display unit of data processing and communication: base plate is provided with binding post and the ethernet communication interface that is connected outside sampling; Control board comprises analog switched power supply 1, signal transducer 2, operational amplifier 3, A/D conversion chip 4, control chip 5 and communication module; Analog switched power supply 1 is concatenation operation amplifier 3, A/D conversion chip 4, control chip 5 and display unit respectively; The independence input of analog switched power supply 1 is connected with binding post; The input of signal transducer 2 also is connected with binding post; The output concatenation operation amplifier 3 of signal transducer 2; Operational amplifier 3 is through A/D conversion chip 4 and control chip 5, and the output of control chip 5 is connected with display unit through communication module, and communication module comprises 232 communication chips, 485 communication modules and ethernet communication module; Display unit is a touch LCD screen 6.
Signal transducer 3 comprises the voltage transformer summation current transformer.Signal transducer 2 is transferred to control chip 5 with the signal that collects through behind operational amplifier 3 and the A/D conversion chip 4; After 5 pairs of signal processing of control chip transfer of data is shown to display unit 6 in real time, or transfer of data is realized the online in real time monitoring to the remote terminal monitoring equipment through ethernet communication interface and ethernet communication module.
Also be provided with DC/DC transducer 7 between analog switched power supply 1 and operational amplifier 3 and the A/D conversion chip 4; The part voltage transitions that DC/DC transducer 7 is exported analog switched power supply becomes the normal working voltage of amplifier amplifier 3, A/D conversion chip 4, and DC/DC transducer 7 is for isolating the voltage regulation type transducer.DC/DC transducer 7 has voltage input end, earth terminal, voltage output end, and the positive supply of A/D conversion chip 4 and communication module, earth terminal are connected with voltage output end, the earth terminal of DC/DC transducer 7 respectively.Operational amplifier 3 adopts the instrument operational amplifier, and the A/D conversion chip adopts 16 6 passage A/D conversion chips.
The DC/DC converter is divided into isolated form and non-isolation type; Both differences are: the ground of isolated form is divided into input ground and output ground; And non-isolation type has only a ground; The effect of employing non-isolation type can be more better, can improve the isolation voltage level of system, but the DC/DC of isolated form is more expensive than the non-isolation type usually.
Control chip 4 comprises dsp chip and ARM chip, and the input of dsp chip connects the A/D conversion chip, and the output of dsp chip connects the ARM chip, and the ARM chip is connected with display unit through communication module.Wherein dsp chip mainly is responsible for the collection of digital signal and is converted various digital signals to various power quality data through programmed algorithm.And the ARM chip mainly is responsible for reading various power quality datas and data communication from dsp chip, through 232 communication chips or 485 communication modules data is sent to liquid crystal display screen and shows, through the ethernet communication interface data and remote terminal is carried out information exchange.The also control of participation device of ARM chip simultaneously, the various functions of its control appliance, functions such as for example parameter setting, data download, and the interface switching of touch screen operation etc.RTU can be connected communication with the ethernet communication interface of the utility model through netting twine, realizes functions such as remote data monitoring, parameter setting, data download through supporting upper computer software.
As shown in Figure 2, the workflow of ACT-X power quality data monitoring device is following:
After the device power-up; Sampling section promptly begins to carry out data acquisition through information sensor 2; Through giving control chip 5 with digital data transmission behind operational amplifier 3 and the A/D conversion chip 4; Control chip 5 begins to carry out data computing after gathering the data of a cycle, the data acquisition and the calculation process of Here it is acquiescence operating state following table meter;
After the page turn over operation of carrying out LCDs 6; Program begins to judge the function of button: when program judge button operation for get into real time data interface, harmonic analysis interface, when the quality of power supply is counted the interface; The liquid crystal display screen page turning is to above-mentioned 3 kinds of data page displayed, and reads the needed data of this page of data to control chip simultaneously and show then;
When program judges that button operation is waveform display interface, block diagram display interface; The page of supreme this graphical display of liquid crystal display screen page turning: at the waveform display interface; Liquid crystal display screen reads real-time data point position to control chip, and the waveform of three-phase voltage, three-phase current is presented on the screen; When the block diagram display interface, liquid crystal display screen reads the data of each harmonic content to control chip, and with reference to the data of first-harmonic, is presented on the screen with the form of a percentage intuitively through block diagram the size of each harmonic table;
When the program judgement needs to get into data download interface; Liquid crystal display screen page turning to this interface: the user can select the download of current real time data and the download of a historical data in this page; When the user selects real time data to download; To generate the text document of a real time data in the USB flash disk, control chip is transferred to the current real time data that calculates in the real time data text document in the USB flash disk through USB interface;
When the user selects the download of historical data; Program can be according to the date of the data of preserving in the storage chip; In USB flash disk, generate the text document on corresponding date; And control chip reads the historical data of preserving in the storage chip, and these data based dates are saved in the USB flash disk in the corresponding text document;
When the program judgement needed the entering parameter that the interface is set, the liquid crystal display screen page turning was to this interface.The user can revise and be provided with parameter according to different needs this moment, and after clicking save button, the ACT-X electric energy quality monitor is got back to the demonstration of initial interface, and program is got back to the beginning of main program, restarts the operation of a flow process according to the value of parameter setting.
The utility model can pass through the ethernet communication interface; Follow the 61850-5 communication protocol, be connected with the remote terminal monitoring equipment, the remote terminal monitoring equipment carries out real time data through supporting upper computer software to this instrument to be observed; Remote data is downloaded; Parameter is provided with, and gets over operations such as the report from a liner police is provided with, and can also form data analysis report on demand.
The utility model applying flexible is changeable, and it can be used as instrument and uses separately, also can be used as the front end original paper of intelligent grid supervisory control system, gathers in order to realize remote data acquisition and information.The RS-485 communication interface of industrial standard; The Modbus communications protocol; Ethernet communication module and can the Various types of data communications protocol be converted to the stipulations modular converter of 61850 stipulations; Make networking easily convenient, and USB field data download function is arranged, let the user both can understand power status through also making things convenient in the device context analysis through the real-time monitoring substation equipment operation of upper computer software situation at the remote terminal monitoring equipment.Easy for installation need of equipment are from being introduced the sample line of three-phase voltage, three-phase current by sampling end, and the supply line of one group of alternating current 220V, can normally carry out work.
The utility model can be applied to various control system, energy management system, power transformation automation as a kind of advanced person's intellectuality, digitized electrical network front-end collection original paper; Distribution network automated, the monitoring of sub-district power monitoring, industrial automation; Intelligent building, intelligent power distribution dish, switch cubicle.The utlity model has easy for installationly, wiring is simple, and is easy to maintenance, and quantities is little, and the data acquisition precision is high, and data processing is rapid, and control system is stable, and networking is light, strong interference immunity, characteristics such as on-the-spot usb data download.And because the utility model adopted advanced digitization system, so the structure of product more simplified by the tradition table meter that analogue device is formed, and the cost control machine of integral product is more reasonable, and cost is more cheap, and the use colony and the applicable surface of product are wider.
Claims (9)
1. power quality data monitoring device; It is characterized in that; Comprise base plate, be used for the control board and the display unit of data processing and communication; Described control board comprises analog switched power supply, signal transducer, operational amplifier, A/D conversion chip, control chip and communication module, and described analog switched power supply is concatenation operation amplifier, A/D conversion chip, control chip and display unit respectively, the output concatenation operation amplifier of described signal transducer; Described operational amplifier is through A/D conversion chip and control chip, and the output of described control chip is connected with display unit through communication module.
2. a kind of power quality data monitoring device according to claim 1 is characterized in that described communication module comprises 232 communication chips, 485 communication modules and ethernet communication module.
3. a kind of power quality data monitoring device according to claim 2; It is characterized in that; Described base plate is provided with binding post and the ethernet communication interface that connects outside sampling; Described binding post connects analog switched power supply and signal transducer respectively, and described ethernet communication interface is connected with the remote terminal monitoring equipment through said ethernet communication module.
4. a kind of power quality data monitoring device according to claim 1 is characterized in that, also comprises the DC/DC transducer, and this DC/DC transducer input is connected with analog switched power supply, and output is connected with A/D conversion chip, amplifier amplifier respectively.
5. a kind of power quality data monitoring device according to claim 1 is characterized in that described signal transducer comprises the voltage transformer summation current transformer.
6. a kind of power quality data monitoring device according to claim 1 is characterized in that described operational amplifier is the instrument operational amplifier.
7. a kind of power quality data monitoring device according to claim 1 is characterized in that, described A/D converter chip is 16 6 passage A/D converter chips.
8. a kind of power quality data monitoring device according to claim 1; It is characterized in that; Described control chip comprises dsp chip and ARM chip; The input of described dsp chip connects said A/D conversion chip, and the output of dsp chip connects the ARM chip, and described ARM chip is connected with display unit through communication module.
9. a kind of power quality data monitoring device according to claim 1 is characterized in that described display unit is a touch LCD screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201042099U CN202524168U (en) | 2012-03-19 | 2012-03-19 | Power quality data monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012201042099U CN202524168U (en) | 2012-03-19 | 2012-03-19 | Power quality data monitoring device |
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| CN202524168U true CN202524168U (en) | 2012-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201042099U Expired - Lifetime CN202524168U (en) | 2012-03-19 | 2012-03-19 | Power quality data monitoring device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103888311A (en) * | 2013-10-30 | 2014-06-25 | 南京理工大学 | Distributed variable sampling rate synchronous data acquisition device based on Ethernet |
| CN103913647A (en) * | 2013-01-06 | 2014-07-09 | 上海电力通信有限公司 | Transformer substation electric energy comprehensive information acquisition terminal |
| CN107807335A (en) * | 2016-08-29 | 2018-03-16 | 苏州溯标检测认证有限公司 | A kind of carrying integrated automatic detection device of new-energy automobile DC/DC converters |
-
2012
- 2012-03-19 CN CN2012201042099U patent/CN202524168U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103913647A (en) * | 2013-01-06 | 2014-07-09 | 上海电力通信有限公司 | Transformer substation electric energy comprehensive information acquisition terminal |
| CN103888311A (en) * | 2013-10-30 | 2014-06-25 | 南京理工大学 | Distributed variable sampling rate synchronous data acquisition device based on Ethernet |
| CN107807335A (en) * | 2016-08-29 | 2018-03-16 | 苏州溯标检测认证有限公司 | A kind of carrying integrated automatic detection device of new-energy automobile DC/DC converters |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIVESINE ELECTRIC (SHANGHAI) CO., LTD. Free format text: FORMER NAME: SHANGHAI DOUBLE X TECHNOLOGY CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: 201108 Shanghai, Minhang District, Hong Jian Road, No. third, building 1, building 99, 2 Patentee after: Leith electric (Shanghai) Co. Ltd. Address before: 200240 C building, No. 4299 Jin Du Road, Shanghai, Minhang District, 1-773 Patentee before: Shanghai Double X Technology Co., Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
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| CX01 | Expiry of patent term |