CN104007410A - Digital electric energy meter verifying device - Google Patents
Digital electric energy meter verifying device Download PDFInfo
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- CN104007410A CN104007410A CN201410260699.5A CN201410260699A CN104007410A CN 104007410 A CN104007410 A CN 104007410A CN 201410260699 A CN201410260699 A CN 201410260699A CN 104007410 A CN104007410 A CN 104007410A
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Abstract
The invention discloses a digital electric energy meter verifying device. The digital electric energy meter verifying device is composed of a three-phase power source (1), a sampling module (2), a protocol conversion module (3), a standard electric energy meter (4), an error calculating module (5) and a standard digital electric energy meter (6), wherein the output end of the three-phase power source (1) is connected with the input end of the sampling module (2) and the input end of the standard electric energy meter (4) in parallel. The output end of the sampling module (2) is connected with the input end of the protocol conversion module (3). The output end of the protocol conversion module (3) is connected with the input end of the standard digital electric energy meter (6), and a line is led out to be connected with an external detected digital electric energy meter (7). The output end of the standard digital electric energy meter (6) is connected with the input end of the standard electric energy meter (4) and the input end of the error calculating module (5) in parallel. The accuracy degree of the standard digital power source can trace to the traditional electric energy standard, and quantity transmission can be carried out.
Description
Technical field
The invention belongs to electrical engineering technical field, be specifically related to a kind of improved digital electric energy meter checking device.
Background technology
Along with the high speed development of intelligent grid technology, the digital transformer substation based on IEC61850 normalization will become the trend of transformer substation construction.Its information acquisition, transmission process and output procedure will all realize digitizing, and device intelligence, communication network, model and communication protocol are unitized, computer-aided traffic control.And the popularization of digital transformer substation technology has caused the change of Electric Energy Metering Technology.Digital metering mode, owing to adopting optical-fibre channel to carry out the transmission of digital quantity, has been eliminated analog/digital (A/D) transformed error of secondary voltage drop and simulation electric energy meter effectively, has improved accuracy and the degree of stability of electric energy metrical; Therefore, digital metering will become the developing direction of electric energy metrical specialty.
National metrological regulations is fixed, must accept compulsory verification for the Electric Energy Tariff Point Metering Device of trade settlement.And in traditional electronic metering system, electromagnetic transformer output analog voltage, current signal, send electric energy meter to by secondary cable, analog quantity is converted into digit pulse amount by electric energy meter, electric energy in counter stored counts calculates certain period again, like this, traditional electronic metering system will be brought larger uncertainty of measurement.And in digital metering system, electronic mutual inductor output digital voltage, current signal, arrive merge cells by Optical Fiber Transmission, merge cells becomes electric current and voltage information combination according to IEC61850-9 standard the Frame of cannonical format, digital electricity meter receives this Frame, directly carries out mathematical computations and draws electric energy.Hence one can see that, and essential change has occurred for the principle of work of electronic mutual inductor and digital electricity meter and input/output format, and traditional calibration equipment, due to its poor reliability, lacks complete digital metering transmission of quantity value system and cannot carry out verification to it.
Summary of the invention
The technical problem to be solved in the present invention is that, for the poor reliability of existing digital electricity meter calibration technology existence, the defect of shortage whole number metering value transport system, provides a kind of improved digital electric energy meter checking device.
Technical scheme of the present invention is, referring to accompanying drawing 1, as shown in Figure 1, it is composed in series by three phase power source 1, sampling module 2, protocol conversion module 3, standard electric energy meter 4, error calculating module 5, standard digital electric energy meter 6 digital electric energy meter checking device providing.Wherein, the output terminal of described three phase power source 1 input end of sampling module 2 in parallel and the input end of standard electric energy meter 4.The input end of the output terminal connection protocol conversion module 3 of described sampling module 2.The input end of the output terminal connection standard digital electricity meter 6 of described protocol conversion module 3 is also drawn and the line of the tested digital electricity meter 7 of peripheral hardware.And the output terminal of described standard digital electric energy meter 6 input end of standard electric energy meter 4 in parallel and the input end of error calculating module 5.
When the digital electric energy meter checking device forming thus uses, the tested digital electricity meter of the external peripheral hardware of line that the output terminal of described protocol conversion module 3 is drawn, the output terminal of the tested digital electricity meter of this peripheral hardware is accessed to the input end of the above-mentioned error calculating module 5 of this device, can implement the detection check to the tested digital electricity meter 7 of peripheral hardware.In detection check process, voltage, the electric current of described sampling module 2 sampling three-phase power sources 1, sampled signal obtains exporting the standard digital power source of data fit IEC61850-9-1/-9-2 standard by protocol conversion module 3.The output of standard digital power source is divided into two-way: a road is passed to tested digital electricity meter 7, one tunnels through framing and passed to standard digital electric energy meter 6.
By the accumulation energy value of more tested digital electricity meter and described standard digital electric energy meter, can obtain the error of tested digital electricity meter thus.The accumulation electric energy of standard of comparison digital electricity meter and the actual measurement electric energy of described standard electric energy meter, can obtain the error of standard digital power source.
The invention has the beneficial effects as follows: the accuracy of standard digital power source can be traced to the source to traditional electric energy standard, and the accuracy of standard digital power source can be carried out transmission of quantity value;
Brief description of the drawings
Fig. 1 is the structured flowchart of a specific embodiment of digital electric energy meter checking device of the present invention, in figure, is denoted as:
1-three phase power source,
2-sampling module,
3-protocol conversion module,
4-standard electric energy meter,
5-error calculating module,
6-standard digital electric energy meter,
7-tested digital electricity meter.
Embodiment
Referring to Fig. 1, Figure 1 shows that specific embodiment of digital electric energy meter checking device of the present invention.In this embodiment, three phase power source 1 adopts commercially available XL803 type three phase power source, output analog quantity 3U3I; Sampling module 2 adopts commercially available general AD module; Protocol conversion module 3 adopts commercially available IEC61850 protocol converter; Standard electric energy meter 4 adopts commercially available 0.2s level DSSD331 three-phase electric energy meter; Error calculating module 5 adopts commercially available DSP (BF531) pattern piece; Standard digital electric energy meter 6 adopts commercially available 0.2s level DSSD331-ME2 digital electricity meter.Described three phase power source 1, sampling module 2, protocol conversion module 3, standard electric energy meter 4, error calculating module 5, standard digital electric energy meter 6 are by technique scheme, with reference to the digital electric energy meter checking device that is connected in series composition the present embodiment shown in accompanying drawing 1.Wherein, the output terminal of three phase power source 1 input end of sampling module 2 in parallel and the input end of standard electric energy meter 4.The input end of the output terminal connection protocol conversion module 3 of sampling module 2.The input end of the output terminal connection standard digital electricity meter 6 of protocol conversion module 3 is also drawn and the line of the tested digital electricity meter 7 of peripheral hardware.And the output terminal of standard digital electric energy meter 6 input end of standard electric energy meter 4 in parallel and the input end of error calculating module 5.
Claims (1)
1. a digital electric energy meter checking device, it is characterized in that: it is by three phase power source (1), sampling module (2), protocol conversion module (3), standard electric energy meter (4), error calculating module (5), standard digital electric energy meter (6) is composed in series, wherein, the input end of the output terminal sampling module in parallel (2) of described three phase power source (1) and the input end of standard electric energy meter (4), the input end of the output terminal connection protocol conversion module (3) of described sampling module (2), the input end of the output terminal connection standard digital electricity meter (6) of described protocol conversion module (3) is also drawn and the line of the tested digital electricity meter of peripheral hardware (7), and the input end of the output terminal of described standard digital electric energy meter (6) standard electric energy meter in parallel (4) and the input end of error calculating module (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260699.5A CN104007410A (en) | 2014-06-12 | 2014-06-12 | Digital electric energy meter verifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410260699.5A CN104007410A (en) | 2014-06-12 | 2014-06-12 | Digital electric energy meter verifying device |
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| CN104007410A true CN104007410A (en) | 2014-08-27 |
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| CN201410260699.5A Pending CN104007410A (en) | 2014-06-12 | 2014-06-12 | Digital electric energy meter verifying device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
| CN105203986A (en) * | 2015-09-16 | 2015-12-30 | 国家电网公司 | Digital power source tracing method and system |
| CN105242231A (en) * | 2015-09-08 | 2016-01-13 | 国家电网公司 | Digital electric energy measurement performance detection and tracing method and closed-loop system |
| CN105548947A (en) * | 2016-01-28 | 2016-05-04 | 云南电网有限责任公司电力科学研究院 | Method and system of synchronization traceability of digitalization electric energy meter |
| CN106443563A (en) * | 2016-11-01 | 2017-02-22 | 国网江西省电力公司电力科学研究院 | Field environment based integrated calibrating and analytic device of digital electric energy meter |
| WO2019076165A1 (en) * | 2017-10-16 | 2019-04-25 | 广东东方电讯科技有限公司 | Nonlinear load power and electric energy calibrating device |
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| CN202522693U (en) * | 2012-04-01 | 2012-11-07 | 贵州电力试验研究院 | Device for detecting measure accuracy degree of electric energy meter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
| CN105242231A (en) * | 2015-09-08 | 2016-01-13 | 国家电网公司 | Digital electric energy measurement performance detection and tracing method and closed-loop system |
| CN105203986A (en) * | 2015-09-16 | 2015-12-30 | 国家电网公司 | Digital power source tracing method and system |
| CN105548947A (en) * | 2016-01-28 | 2016-05-04 | 云南电网有限责任公司电力科学研究院 | Method and system of synchronization traceability of digitalization electric energy meter |
| CN105548947B (en) * | 2016-01-28 | 2019-02-26 | 云南电网有限责任公司电力科学研究院 | A kind of synchronous source tracing method of digitalized electrical energy meter and system |
| CN106443563A (en) * | 2016-11-01 | 2017-02-22 | 国网江西省电力公司电力科学研究院 | Field environment based integrated calibrating and analytic device of digital electric energy meter |
| WO2019076165A1 (en) * | 2017-10-16 | 2019-04-25 | 广东东方电讯科技有限公司 | Nonlinear load power and electric energy calibrating device |
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Application publication date: 20140827 |