CN102539909A - Electric energy metering module - Google Patents
Electric energy metering module Download PDFInfo
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- CN102539909A CN102539909A CN2010105979034A CN201010597903A CN102539909A CN 102539909 A CN102539909 A CN 102539909A CN 2010105979034 A CN2010105979034 A CN 2010105979034A CN 201010597903 A CN201010597903 A CN 201010597903A CN 102539909 A CN102539909 A CN 102539909A
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- electric energy
- energy metering
- metering module
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Abstract
The invention discloses an electric energy metering module and relates to the field of measurement and metering of power systems. The electric energy metering module comprises an electric energy metering chip 1, wherein a voltage current sampling input end of the electric energy metering chip 1 is connected with a low-power signal conditioning unit 3; the low-power signal conditioning unit 3 is connected with a low-voltage signal output end of a voltage current transformer; the electric energy metering chip 1 is connected with a micro control unit (MCU) 2; and an output end of the MCU is connected with an optical fiber communication interface 4. The electric energy metering module can be directly connected with a primary electronic transformer and used for transmitting electric energy to a high-voltage transmission line; the electric energy can be directly acquired and metered on a primary side, and the electric energy metering module can be electrically isolated from secondary equipment; the electric energy metering module is simple in circuit and reasonable in cost, can be designed into an independent metering unit with small size, and can be directly arranged on an outdoor tower; and a special cabinet is not required.
Description
Technical field
The present invention relates to protecting electrical power system and monitoring field, relate in particular to a kind of electric energy metrical module.
Background technology
Traditional electric energy meter meter all adopts 100V; The high-power signal interface of 1A; Need be connected with an electromagnetic type voltage current transformer and could form complete high pressure measurement system; Need be installed in independently in metering cabinet or the batch meter, can not be directly and electronic mutual inductor form miniaturization high pressure measurement device.The electronic mutual inductor of small low-consumption has low power signaling interface, use electronic mutual inductor to combine to form small-sized WT-MSR with the electric energy meter meter, and the signaling interface and the function composition structure of gauging table meter all proposed new requirement.For example; Be used to protect the embedded high precision electric energy metrical module 200620070198.1 of measure and control device to describe a kind of electric power meter of non-traditional electric energy meter structure; Be embedded in the protection measure and control device; The metering module that is connected with the electric parameters transducer of secondary side low pressure can not directly be connected with primary side high-tension electricity minor mutual inductor.And for example, electric power single-phase high voltage electric energy metrical module 200520095463.7 discloses a kind of single-phase high voltage metering module, has adopted voltage divider and low pressure mutual inductor to obtain primary side voltage and current signal, and the mode that optical-fibre communications is isolated is connected with secondary side.Its single-phase binding high-voltage electrical apparatus element mutual inductor and Low-voltage Electronic element metering module are realized the mode of primary side metering, do not realize the standard low-power interface of metering module, for the operation and the maintenance of metering module are made troubles.Because this metering module also depends on light power supply, the energy-storage module factors such as mode with single-phase metering module combination three phase metering, makes its structure become comparatively complicated, cost is higher.
Summary of the invention
To the problems referred to above, the invention provides a kind of small and light, power consumption is little, easy to use, the electric power meter that can directly link to each other with electronic mutual inductor.
The technical scheme that the present invention is adopted for its technical matters of solution is:
A kind of electric energy metrical module; Comprise electric energy computation chip; The electric current and voltage sampling input end of said electric energy computation chip is connected with low-power signal conditioning unit; This low-power signal conditioning unit is connected with the secondary side of voltage, current transformer, and said electric energy computation chip is connected with CPU MCU, and the output terminal of said CPU MCU is connected with optical communication interface.
The invention has the beneficial effects as follows: electric energy metrical module of the present invention comprises that electric energy computation chip, low-power signal conditioning unit, CPU MCU connect and four electronic units of optical communication interface; Can directly be connected, realize ultra-high-tension power transmission line is directly transmitted the function of electric energy with primary electron formula mutual inductor; And can realize collection sampling to parameters of electric power three-phase voltage, electric current; And to each parameters of electric power voltage, current effective value; Each mutually or close the calculating and the monitoring of the active power, reactive power, applied power, power factor, frequency, phase place etc. of phase, CPU MCU transmits electric power signal through optical communication interface can realize the electrical isolation with traditional secondary table meter and remote meter reading unit; Circuit is simple, and cost is reasonable.The WT-MSR body of forming with electronic mutual inductor can be designed to independent metering units, and volume is little, can be directly and other high-tension switch gears integrated, need not set up special cabinet specially, also can directly be installed on the outdoor shaft tower, need not independent occupation of land.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiment the present invention is described further:
Fig. 1 is an embodiment of the invention functional-block diagram;
Fig. 2 is embodiment of the invention low-power signal conditioning element circuit schematic diagram;
Fig. 3 is embodiment of the invention electric energy computation chip and peripheral circuit diagram thereof;
Fig. 4 is embodiment of the invention CPU MCU and peripheral circuit diagram thereof;
Fig. 5 is the circuit theory diagrams of embodiment of the invention optical communication interface.
Embodiment
With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4; A kind of electric energy metrical module of the present invention; Comprise that electric energy computation chip 1, this electric energy computation chip 1 can be the special-purpose computation chip ATT7022B of multi-functional anti-electricity-theft principal wave harmonic wave three-phase electric energy; Be connected with CPU MCU2 through the SPI communication interface, and be transferred to CPU MCU2 to measuring parameter; The electric current and voltage sampling input end of above-mentioned electric energy computation chip 1 is connected with low-power signal conditioning unit 3; This low-power signal conditioning unit 3 is connected with the secondary side of voltage, current transformer, is transformed into voltage, the voltage of Current Transformer Secondary side, current signal to be fit to the scope that electric energy computation chip 1 is gathered; The output terminal of above-mentioned CPU MCU2 is connected with optical communication interface 4, transmits electric power signal through optical communication interface and can realize the electrical isolation with traditional secondary table meter and remote meter reading unit.
More than be specifying to preferable enforcement of the present invention; But the invention is not limited to said embodiment; Those of ordinary skill in the art also can make all equivalent variations or replacement under the prerequisite of spirit of the present invention, distortion that these are equal to or replacement all are included in the application's claim institute restricted portion.
Claims (1)
1. electric energy metrical module; The output terminal that comprises electric energy computation chip (1), said electric energy computation chip (1) is connected with CPU MCU (2); It is characterized in that: the electric current and voltage sampling input end of said electric energy computation chip (1) is connected with low-power signal conditioning unit (3); This low-power signal conditioning unit (3) is connected with the secondary side of voltage, current transformer, and the output terminal of said CPU MCU (2) is connected with optical communication interface (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105979034A CN102539909A (en) | 2010-12-21 | 2010-12-21 | Electric energy metering module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105979034A CN102539909A (en) | 2010-12-21 | 2010-12-21 | Electric energy metering module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102539909A true CN102539909A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105979034A Pending CN102539909A (en) | 2010-12-21 | 2010-12-21 | Electric energy metering module |
Country Status (1)
| Country | Link |
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| CN (1) | CN102539909A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293374A (en) * | 2013-06-04 | 2013-09-11 | 陈永山 | Three-phase access type electric energy meter with electronic transformers and metering method for three phase access type electric energy meter |
| CN107102202A (en) * | 2017-06-06 | 2017-08-29 | 宁波恒力达科技有限公司 | A kind of direct gauge assembly of single-phase high voltage high current |
| CN108089046A (en) * | 2017-10-30 | 2018-05-29 | 国网山东省电力公司临朐县供电公司 | Bidirectional measuring data acquisition device under looped network pattern |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030004660A1 (en) * | 2001-06-28 | 2003-01-02 | Hunter Robert R. | Method and apparatus for reading and controlling electric power consumption |
| WO2005008181A2 (en) * | 2003-07-18 | 2005-01-27 | Power Measurement Ltd. | Methods and apparatus for monitoring power flow in a conductor |
| CN2812017Y (en) * | 2005-03-10 | 2006-08-30 | 武汉国测科技股份有限公司 | Single-phase high-voltage electric energy metering module |
| CN2886580Y (en) * | 2006-03-16 | 2007-04-04 | 江苏金智科技股份有限公司 | Embedded type high-precision electrical power measuring module for protecting of measuring and control device |
| CN101424713A (en) * | 2008-12-05 | 2009-05-06 | 深圳市星龙科技有限公司 | Three-phase four-wire high voltage energy measuring method and device |
| CN201819952U (en) * | 2010-10-14 | 2011-05-04 | 珠海威瀚科技发展有限公司 | Electric energy metering module |
-
2010
- 2010-12-21 CN CN2010105979034A patent/CN102539909A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030004660A1 (en) * | 2001-06-28 | 2003-01-02 | Hunter Robert R. | Method and apparatus for reading and controlling electric power consumption |
| WO2005008181A2 (en) * | 2003-07-18 | 2005-01-27 | Power Measurement Ltd. | Methods and apparatus for monitoring power flow in a conductor |
| CN2812017Y (en) * | 2005-03-10 | 2006-08-30 | 武汉国测科技股份有限公司 | Single-phase high-voltage electric energy metering module |
| CN2886580Y (en) * | 2006-03-16 | 2007-04-04 | 江苏金智科技股份有限公司 | Embedded type high-precision electrical power measuring module for protecting of measuring and control device |
| CN101424713A (en) * | 2008-12-05 | 2009-05-06 | 深圳市星龙科技有限公司 | Three-phase four-wire high voltage energy measuring method and device |
| CN201819952U (en) * | 2010-10-14 | 2011-05-04 | 珠海威瀚科技发展有限公司 | Electric energy metering module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293374A (en) * | 2013-06-04 | 2013-09-11 | 陈永山 | Three-phase access type electric energy meter with electronic transformers and metering method for three phase access type electric energy meter |
| CN107102202A (en) * | 2017-06-06 | 2017-08-29 | 宁波恒力达科技有限公司 | A kind of direct gauge assembly of single-phase high voltage high current |
| CN108089046A (en) * | 2017-10-30 | 2018-05-29 | 国网山东省电力公司临朐县供电公司 | Bidirectional measuring data acquisition device under looped network pattern |
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Application publication date: 20120704 |