CN202421315U - Intelligent electric power measuring and controlling instrument - Google Patents
Intelligent electric power measuring and controlling instrument Download PDFInfo
- Publication number
- CN202421315U CN202421315U CN2011205574663U CN201120557466U CN202421315U CN 202421315 U CN202421315 U CN 202421315U CN 2011205574663 U CN2011205574663 U CN 2011205574663U CN 201120557466 U CN201120557466 U CN 201120557466U CN 202421315 U CN202421315 U CN 202421315U
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- intelligent electric
- electric energy
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Abstract
The utility model relates to an intelligent electric power measuring and controlling instrument which is characterized in that input ends of a three-phase current transformer and a three-phase voltage transformer are connected with a three-phase bus; the output end of the three-phase voltage transformer and the output end of the three-phase current transformer are both connected with an electric energy metering chip; the electric energy metering chip is provided with two output ends; one output end is a pulse output end; the other output end is connected with a microcomputer processor; the output end of the microcomputer processor is respectively connected with a display screen and a host computer through an RS485 communication module; and a PC (Personal Computer) device for programming the microcomputer processor is in data connection with the microcomputer processor. After the technical scheme is adopted, current and voltage signals can be quickly real-time monitored because an MCU (Micro Controller Unit) and a special metering chip are adopted; the structure is relatively simple; a voltage source circuit is added, thus a 220v power supply is autonomously supplied to the intelligent electric power measuring and controlling instrument; and meanwhile, the PC device is introduced for performing the changeable programming on the MCU, thus the requirements under different conditions are met.
Description
Technical field
The utility model belongs to a kind of intelligent electric power measure and control instrument, specifically belongs to a kind of intelligent electric power measure and control instrument.
Background technology
In power domain, in the power transmission network process, need carry out real-time monitoring at present, to guarantee that the staff can understand electric power accurately, in real time and carry situation for the voltage of electrical network, the parameter of electric current.But some electric probe devices at present on the market or be exactly independently to survey electric current or independently survey voltage can not comprehensively be gathered and monitoring.Some are also arranged is multi-functional monitoring devices, but design is too complicated, and subsidiary function is single simultaneously, and cost is high, for the user, causes a lot of inconvenience.
Summary of the invention
The utility model technical matters to be solved is: provide a kind of simple in structure, functional diversities and can be in real time the intelligent electric power measure and control instrument of monitoring current and voltage signal simultaneously.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of intelligent electric power measure and control instrument; It is characterized in that: this device inserts three-phase bus for the input end of threephase current transformer and threephase potential transformer; The output terminal of said threephase potential transformer and the output terminal of threephase current transformer all insert electric energy computation chip; Said electric energy computation chip is provided with two output terminals, and one is pulse output end, and another output termination is to computer processor; The output terminal of said computer processor connects respectively to display screen with through the RS485 communication module and connects to host computer, and a PC that is used for computer processor is programmed connects with the computer processor data.
The output termination of said threephase potential transformer is to a voltage source loop, and said voltage source loop is electrically connected with this device.
The pulse output end of said electric energy computation chip connects to warning horn, hygroscope or protractor.
Said electric energy computation chip adopts the special-purpose computation chip of ATT7030A.
Said computer processor adopts the MCU of 68HC908LJ12 model.
After adopting above technical scheme: owing to adopted MCU and special-purpose computation chip; Monitoring current and voltage signal that then can be quick, real-time; And structure is relatively simple, has added the voltage source loop, then independently provides the power supply of a 220V to act on this device; Introduce PC simultaneously for the programming that MCU changes formula, can satisfy the demand under the different situations.
Description of drawings
Fig. 1 is the utility model construction module figure;
The circuit diagram that Fig. 2 gathers for the utility model electric current and voltage.
Embodiment
Referring to Fig. 1; A kind of intelligent electric power measure and control instrument is the input end access three-phase bus of threephase current transformer and threephase potential transformer, and the output terminal of threephase potential transformer and the output terminal of threephase current transformer all insert the electric energy computing chip; Referring to the concrete electric current and voltage Acquisition Circuit figure of Fig. 2; Electric energy computation chip is provided with two output terminals, and one is pulse output end, and another output termination is to computer processor; The output terminal of computer processor connects respectively to display screen with through the RS485 communication module and connects to host computer, and a PC that is used for computer processor is programmed connects with the computer processor data.The output termination of threephase potential transformer is to a voltage source loop, and the voltage source loop is electrically connected with this device.Display screen shows that for the blue screen backlight LCD pulse output end of electric energy computation chip connects to warning horn, hygroscope or protractor, a multi-functional interface is provided, for ease the demand under the different situations here.
The model that concrete components and parts can adopt: electric energy computation chip adopts the special-purpose computation chip of ATT7030A.Computer processor adopts 68HC908LJ12MCU.
The principle of work of the utility model:
(1) can directly insert signal through current-voltage transformer from electric current, voltage transformer (VT);
(2) can set the PT/CT no-load voltage ratio arbitrarily through PC;
(3) pulse output end; Alarm relay output; The design of function modoularizations such as 4～20mA analog quantity; The output of the analog quantity of pulse output end: 2 tunnel 4～20mA can be provided at most output, and simulation becomes send output can select 26 common in electrical network electric weight (UA, UB, UC, UAB, UBC, UCA, IA, IB, IC, PA, PB, PC, P are total, QA, QB, QC, Q are total, SA, SB, SC, S are total, PFA, PFB, PFC, PF, F) isolation transmit is output as the direct current signal of 0～20mA or 4～20mA.
(4) the polylith instrument can be provided with different addresses;
(5) but the MCU communication insert in SCADA, the PLC system; Can with the communication of industry various software (Intouch, Fix, Citec, configuration net etc.);
(6) display screen shows that for the blue screen backlight LCD visibility is high;
(7) the convenient installation, wiring is simple, and quantities is little;
(8) instrument adopts special-purpose loss protecting circuit, and under the dead electricity situation, data are preserved and do not lost, and behind the recovery power supply, instrument continues operation;
(9) four-quadrant electric energy metrical, time-shared charge, maximum demand record and 12 months electric energy statistics.
(10) the voltage source loop is electrically connected with this device, and the accessory power supply of a 220V independently is provided.
(11) security performance: industrial frequency withstand voltage, power supply, voltage input circuit, electric current input circuit be AC2kV/1min between any two; Power supply and switching value input circuit, order circuit, change are sent AC1.5kV/1min between the output loop, insulation resistance: input, output terminal are to casing>5M Ω.
Claims (5)
1. intelligent electric power measure and control instrument; It is characterized in that: this device inserts three-phase bus for the input end of threephase current transformer and threephase potential transformer; The output terminal of said threephase potential transformer and the output terminal of threephase current transformer all insert electric energy computation chip; Said electric energy computation chip is provided with two output terminals, and one is pulse output end, and another output termination is to computer processor; The output terminal of said computer processor connects respectively to display screen with through the RS485 communication module and connects to host computer, and a PC that is used for computer processor is programmed connects with the computer processor data.
2. a kind of intelligent electric power measure and control instrument according to claim 1 is characterized in that: the output termination of said threephase potential transformer is to a voltage source loop, and said voltage source loop is electrically connected with this device.
3. a kind of intelligent electric power measure and control instrument according to claim 1 and 2, it is characterized in that: the pulse output end of said electric energy computation chip connects to warning horn, hygroscope or protractor.
4. a kind of intelligent electric power measure and control instrument according to claim 1 and 2 is characterized in that: said electric energy computation chip adopts the special-purpose computation chip of ATT7030A.
5. a kind of intelligent electric power measure and control instrument according to claim 1 and 2 is characterized in that: said computer processor adopts the MCU of 68HC908LJ12 model.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205574663U CN202421315U (en) | 2011-12-28 | 2011-12-28 | Intelligent electric power measuring and controlling instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205574663U CN202421315U (en) | 2011-12-28 | 2011-12-28 | Intelligent electric power measuring and controlling instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421315U true CN202421315U (en) | 2012-09-05 |
Family
ID=46746068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205574663U Expired - Fee Related CN202421315U (en) | 2011-12-28 | 2011-12-28 | Intelligent electric power measuring and controlling instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421315U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336169A (en) * | 2013-06-22 | 2013-10-02 | 青岛歌尔声学科技有限公司 | Direct current voltmeter and method for measuring voltage by using same |
| CN103592507A (en) * | 2013-11-29 | 2014-02-19 | 国网安徽省电力公司淮南供电公司 | Voltage loop alarm for metering devices of transformer station |
| CN103985236A (en) * | 2014-05-08 | 2014-08-13 | 国家电网公司 | Automatic meter reading system of electric energy meter |
| CN104158288A (en) * | 2014-07-20 | 2014-11-19 | 国家电网公司 | Power monitoring device for ultra-capacity customers |
-
2011
- 2011-12-28 CN CN2011205574663U patent/CN202421315U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103336169A (en) * | 2013-06-22 | 2013-10-02 | 青岛歌尔声学科技有限公司 | Direct current voltmeter and method for measuring voltage by using same |
| CN103336169B (en) * | 2013-06-22 | 2015-07-29 | 青岛歌尔声学科技有限公司 | D.C. voltmeter and apply the method that this voltage table carries out voltage measurement |
| CN103592507A (en) * | 2013-11-29 | 2014-02-19 | 国网安徽省电力公司淮南供电公司 | Voltage loop alarm for metering devices of transformer station |
| CN103592507B (en) * | 2013-11-29 | 2017-08-08 | 国网安徽省电力公司淮南供电公司 | Transformer station's metering device voltage circuit alarm |
| CN103985236A (en) * | 2014-05-08 | 2014-08-13 | 国家电网公司 | Automatic meter reading system of electric energy meter |
| CN104158288A (en) * | 2014-07-20 | 2014-11-19 | 国家电网公司 | Power monitoring device for ultra-capacity customers |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120905 Termination date: 20131228 |