CN203587685U - Voltage-adaptive three-phase multifunctional electric energy meter - Google Patents
Voltage-adaptive three-phase multifunctional electric energy meter Download PDFInfo
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- CN203587685U CN203587685U CN201320645484.6U CN201320645484U CN203587685U CN 203587685 U CN203587685 U CN 203587685U CN 201320645484 U CN201320645484 U CN 201320645484U CN 203587685 U CN203587685 U CN 203587685U
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Abstract
The utility model relates to a voltage-adaptive three-phase multifunctional electric energy meter, comprising a switch power supply module, a voltage current sampling module, an electric energy metering module, an MCU module, a clock module, a data storage module, an LCD display module, and a communication interface. The switch power supply module is connected to the electric energy metering module and the MCU module, the voltage current sampling module, the electric energy metering module, and the MCU module are successively connected, and the clock module, the data storage module, the LCD display module, and the communication interface are connected to the MCU module. The voltage-adaptive three-phase multifunctional electric energy meter can automatically recognize the electrical network voltage specification, achieve high precision metering of electric energy, and achieve functions of real-time recording of data and process, time-sharing metering, and self-diagnosis, etc. Compared with a traditional electric energy meter, the voltage-adaptive three-phase multifunctional electric energy meter is advantaged by wide input voltage range, small size, light mass, small loss of internal power, high power supply conversion rate, etc.
Description
[technical field]
The utility model relates to a kind of electric energy meter, is specifically related to a kind of three-phase multifunctional electrical energy meter based on voltage adaptive, belongs to electric power meter technical field.
[background technology]
At present, the voltage specification that China's three-phase intelligent ammeter is conventional is 57.7VAC, 100VAC, 220VAC, 380VAC; Countries in the world line voltage standard also differs, and from 100VAC to 460VAC, input voltage range is wider.Current, domestic most ammeter manufacturing enterprise produces the phase-controlled power technology that electric energy meter adopts power frequency converter technique, by low-frequency transformer, alternating voltage is converted into DC voltage, then realizes the required voltage of each functional module in ammeter by linear series adjustable type voltage of direct-flow voltage regulation source.
Although linear power supply has stable output, Ripple Noise is little, circuit design is simple, reliability, feature that anti-interference ability is strong, its work efficiency is lower simultaneously, volume is large, thermal value is large.In the face of the electric energy meter of different voltage specifications, the resource that has strengthened Utilities Electric Co. and electric energy meter manufacturing enterprise drops into, and has increased the stock of checkout equipment kind and quantity and product standby redundancy, has restricted Utilities Electric Co.'s standardized management process.
Therefore, for solving the problems of the technologies described above, necessaryly provide a kind of three-phase multifunctional electrical energy meter based on voltage adaptive, can automatically identify the voltage specification of electrical network, meet the demand of the different voltage specifications of electrical network.
[utility model content]
For addressing the above problem, the purpose of this utility model is to provide a kind of three-phase multifunctional electrical energy meter based on voltage adaptive, it can identify line voltage specification automatically, can realize electric energy high-precision measuring, the functions such as real time data and process record, time-sharing measurement, self diagnosis.
For realizing above-mentioned target, the technical scheme that the utility model is taked is: a kind of three-phase multifunctional electrical energy meter based on voltage adaptive, and it comprises switch power module, electric current and voltage sampling module, electric energy metering module, MCU module, clock module, data memory module, LCD display module and communication interface; Wherein, described switch power module is connected to respectively in electric energy metering module, MCU module; Described electric current and voltage sampling module, electric energy metering module, MCU module connect successively; Described clock module, data memory module, LCD display module, communication interface are connected to respectively in MCU module.
Three-phase multifunctional electrical energy meter based on voltage adaptive of the present utility model is further set to: described switch power module is comprised of input rectifying filtering circuit, high-frequency electrical depressor, output rectifier and filter, system, control circuit, feedback circuit, DC-DC Switching Power Supply and holding circuit; Wherein, described input rectifying filtering circuit, high-frequency electrical depressor, output rectifier and filter, DC-DC Switching Power Supply connect successively; Described feedback circuit one end is connected with system, control circuit, and the other end is connected with output rectifier and filter; Described system, control circuit is connected to high-frequency electrical depressor and connects; Described holding circuit is connected to respectively on input rectifying filtering circuit, system, control circuit.
Three-phase multifunctional electrical energy meter based on voltage adaptive of the present utility model is also set to: the chip in described system, control circuit adopts TNY274PN, and circuit adopts the flyback variator topology of miniwatt occasion.
Compared with prior art, the utlity model has following beneficial effect: 1. adopt the switch power module of high reliability, can realize the input range of the wide voltage specification of 57VAC--580VAC, and can export the two-way power supply of isolation mutually; 2. adopt the electric energy meter of phase control techniques to compare with conventional power source, power module part conversion ratio is high, voltage stabilized range is wide, line regulation is high; 3. because circuit level is high, peripheral circuit reduces, and electric energy meter global design is more compact, and volume is less, and weight is lighter.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of the three-phase multifunctional electrical energy meter based on voltage adaptive of the present utility model.
Fig. 2 is the schematic diagram of the switch power module in Fig. 1.
[embodiment]
Refer to shown in Figure of description 1, the utility model is a kind of three-phase multifunctional electrical energy meter based on voltage adaptive, and it is comprised of several parts such as switch power module 1, electric current and voltage sampling module 2, electric energy metering module 3, MCU module 4, clock module 5, data memory module 6, LCD display module 7 and communication interfaces 8.
Wherein, described switch power module 1 is connected to respectively in electric energy metering module 3, MCU module 4; Described electric current and voltage sampling module 2, electric energy metering module 3, MCU module 4 connect successively; Described clock module 5, data memory module 6, LCD display module 7, communication interface 8 are connected to respectively in MCU module 4.
Further, described switch power module 1 is comprised of input rectifying filtering circuit 11, high-frequency electrical depressor 12, output rectifier and filter 13, system, control circuit 14, feedback circuit 15, DC-DC Switching Power Supply 16 and holding circuit 17; Wherein, described input rectifying filtering circuit 11, high-frequency electrical depressor 12, output rectifier and filter 13, DC-DC Switching Power Supply 16 connect successively; Described feedback circuit 15 one end are connected with system, control circuit 14, and the other end is connected with output rectifier and filter 13; Described system, control circuit 14 is connected to high-frequency electrical depressor 12 and connects; Described holding circuit 17 is connected to respectively on input rectifying filtering circuit 11, system, control circuit 14.Chip in described system, control circuit 14 adopts TNY274PN, and circuit adopts the flyback variator topology of miniwatt occasion.
Described switch power module 1 is respectively electric energy metering module 3, MCU module 4, LCD display module 7, communication interface 8 power supply is provided, and design input voltage range meets 57VAC--580VAC.This switch power module 1 is converted to high voltage direct current by direct rectification and filtering by civil power, then is converted to low pressure high-frequency alternating current by inversion, finally by high-frequency rectification and filtering, becomes required DC low-voltage.Therebetween, system, control circuit 14 carries out sampling measurement by feedback circuit to the DC voltage of output, and by sample value and chip setting value are compared, thereby the transistor in circuit is carried out to switch control, export metastable voltage.
The chip of described electric energy metering module 3 adopts the computation chip of the commercially available micro-RN8302 model of sharp energy.Described MCU module 4 adopts commercially available NEC processor.Described clock module 5 adopts 8025T chip.In described communication interface 8, be connected with RS485 communication module 9 and infrared communication module 10.
The principle of work of the three-phase multifunctional electrical energy meter based on voltage adaptive of the present utility model is as follows: current signal Ia, Ib, Ic, voltage signal Ua, Ub, Uc are respectively through 2 samplings of electric current and voltage sampling module, and send into respectively electric energy metering module 3, thereby gained merit, idle, voltage, electric current raw data, then by the algorithm of setting, data such as calculating electric energy, requirement, power are changed, compensated to raw data by MCU module 4.MCU module 4 realizes many rate meterings according to the area of setting, period, rate etc. simultaneously.MCU module 4 is delivered to data memory module 6 by the data of finally processing and is preserved, and on display, shows in real time with digital form by LCD display module 7.The data of all ammeters inside can be carried out communication transfer by RS485 communication module 9 and infrared communication module 10, can carry out every data of parameter monitoring and record storage simultaneously.
Above embodiment is only the preferred embodiment of this creation, not in order to limit this creation, any modification of making, is equal to replacement, improvement etc., within all should being included in the protection domain of this creation within all spirit in this creation and principle.
Claims (2)
1. the three-phase multifunctional electrical energy meter based on voltage adaptive, is characterized in that: comprise switch power module, electric current and voltage sampling module, electric energy metering module, MCU module, clock module, data memory module, LCD display module and communication interface; Wherein, described switch power module is connected to respectively in electric energy metering module, MCU module; Described electric current and voltage sampling module, electric energy metering module, MCU module connect successively; Described clock module, data memory module, LCD display module, communication interface are connected to respectively in MCU module; Described switch power module is comprised of input rectifying filtering circuit, high-frequency electrical depressor, output rectifier and filter, system, control circuit, feedback circuit, DC-DC Switching Power Supply and holding circuit; Wherein, described input rectifying filtering circuit, high-frequency electrical depressor, output rectifier and filter, DC-DC Switching Power Supply connect successively; Described feedback circuit one end is connected with system, control circuit, and the other end is connected with output rectifier and filter; Described system, control circuit is connected to high-frequency electrical depressor and connects; Described holding circuit is connected to respectively on input rectifying filtering circuit, system, control circuit.
2. the three-phase multifunctional electrical energy meter based on voltage adaptive as claimed in claim 1, is characterized in that: the chip in described system, control circuit adopts TNY274PN, and described system, control circuit adopts the flyback variator topology of miniwatt occasion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645484.6U CN203587685U (en) | 2013-10-20 | 2013-10-20 | Voltage-adaptive three-phase multifunctional electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320645484.6U CN203587685U (en) | 2013-10-20 | 2013-10-20 | Voltage-adaptive three-phase multifunctional electric energy meter |
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| Publication Number | Publication Date |
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| CN203587685U true CN203587685U (en) | 2014-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320645484.6U Expired - Fee Related CN203587685U (en) | 2013-10-20 | 2013-10-20 | Voltage-adaptive three-phase multifunctional electric energy meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977464A (en) * | 2015-07-03 | 2015-10-14 | 朗亿德电气股份有限公司 | High-precision electric energy meter |
| CN107478875A (en) * | 2017-09-22 | 2017-12-15 | 武汉盛帆电子股份有限公司 | A kind of high pressure partial pressure arm and high-voltage electric energy meter |
| CN109378820A (en) * | 2018-11-07 | 2019-02-22 | 宁波奥克斯电气股份有限公司 | A kind of control method that AC load power grid is adaptive and device |
-
2013
- 2013-10-20 CN CN201320645484.6U patent/CN203587685U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104977464A (en) * | 2015-07-03 | 2015-10-14 | 朗亿德电气股份有限公司 | High-precision electric energy meter |
| CN104977464B (en) * | 2015-07-03 | 2017-12-19 | 朗亿德电气股份有限公司 | A kind of high-precision electric energy meter |
| CN107478875A (en) * | 2017-09-22 | 2017-12-15 | 武汉盛帆电子股份有限公司 | A kind of high pressure partial pressure arm and high-voltage electric energy meter |
| CN109378820A (en) * | 2018-11-07 | 2019-02-22 | 宁波奥克斯电气股份有限公司 | A kind of control method that AC load power grid is adaptive and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140507 Termination date: 20171020 |