CN205374726U - Digital electric energy meter device of tracing to source in step - Google Patents
Digital electric energy meter device of tracing to source in step Download PDFInfo
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- CN205374726U CN205374726U CN201620086043.0U CN201620086043U CN205374726U CN 205374726 U CN205374726 U CN 205374726U CN 201620086043 U CN201620086043 U CN 201620086043U CN 205374726 U CN205374726 U CN 205374726U
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Abstract
The utility model provides a digital electric energy meter device of tracing to source in step, include: the mock standard source, respectively with mock standard table and high -speed AD conversion equipment that mock standard source electricity is connected, with the digital standard source that high -speed AD conversion equipment electricity is connected, and, with the digit standard table that digit standard source electricity is connected. The utility model discloses a to the problem of tracing to the source of digital electric energy meter, utilize instantaneous value and the electric degree value of the mode of table source separation in same moment simultaneous acquisition analog quantity to trace to the source numeral standard table and digital standard source in step, set up standard digital electric energy meter to the link of tracing to the source of analog quantity, guaranteed the accurate and reliable of digital electric energy measurement, ensured justice and fairness that the electric power trade settled accounts. Accordingly, the utility model provides a digital electric energy meter device of tracing to source in step can solve among the prior art the digital electric energy meter problem that the precision is low of tracing to the source.
Description
Technical field
This utility model relates to electric device digital electric energy meter of intelligent substation and traces to the source field tests, particularly relates to a kind of digitalized electrical energy meter and synchronizes to trace to the source device.
Background technology
At present, the Rapid Popularization of digital transformer substation and intelligent substation makes electronic mutual inductor, the merging the digitized measurement equipment such as unit, digitalized electrical energy meter all be widely applied in electric device, electronic mutual inductor, merging unit are the equipment that collection analog quantity transfers to digital quantity, and there is between analog loopback certain incidence relation, therefore, the foundation of electronic mutual inductor and merging unit traceability system does not have too big obstacle.But, digitalized electrical energy meter is a kind of full-digital equipment, digital quantity is that codomain is constant, the transport system of time domain discrete, analog quantity is the transport system that a continuous codomain of time domain exists error, must be to rely on codomain in the change of identical time domain thus realizing its magnitude tracing so this by the magnitude tracing of analog quantity to digital quantity.Owing to directly not associating between digitalized electrical energy meter with analog loopback, and owing to there is no the appearance of digital standards equipment in link of tracing to the source, therefore, the problem of tracing to the source of digitalized electrical energy meter is always up a relatively larger problem.
At present, the calibration technology of digitalized electrical energy meter mainly includes digital standard source method and digital standard table method, contrasts with the electric flux in digital standard source or the output of digital standard table by the electric flux of digitalized electrical energy meter output, thus obtaining the error of digitalized electrical energy meter.But all there is the problem how precision of digital standard source or digital standard table is verified in analog loopback in the source tracing method of both digitalized electrical energy meters, causes that its measuring accuracy cannot ensure.
In addition, the source tracing method also having a kind of digitalized electrical energy meter is to bring merging unit into digitalized electrical energy meter to trace to the source in process, thus setting up tracing to the source of digital to analogy loop, but this precision that hypothetical mergers unit cannot be ensured as the source tracing method that digitalized electrical energy meter is a part of its test.
Utility model content
This utility model provides a kind of digitalized electrical energy meter to synchronize to trace to the source device, traces to the source the low problem of precision solving digitalized electrical energy meter in prior art.
This utility model provides a kind of digitalized electrical energy meter to synchronize to trace to the source device, and the described digitalized electrical energy meter device that synchronizes to trace to the source includes:
Mock standard source；
The mock standard table electrically connected with described mock standard source respectively and high-speed a/d conversion equipment；
The digital standard source electrically connected with described high-speed a/d conversion equipment；
And, the digital standard table electrically connected with described digital standard source.
Preferably, described digitalized electrical energy meter synchronizes device of tracing to the source and also includes:
8 half high accuracy boards, described 8 half high accuracy boards electrically connect with described mock standard source；
Instantaneous value sampling apparatus, described instantaneous value sampling apparatus electrically connects with described 8 half high accuracy boards, described digital standard source and described high-speed a/d conversion equipment respectively.
The technical scheme that embodiment of the present utility model provides can include following beneficial effect:
This utility model provides a kind of digitalized electrical energy meter to synchronize to trace to the source device, and the described digitalized electrical energy meter device that synchronizes to trace to the source includes: mock standard source；The mock standard table electrically connected with described mock standard source respectively and high-speed a/d conversion equipment；The digital standard source electrically connected with described high-speed a/d conversion equipment；And, the digital standard table electrically connected with described digital standard source.This utility model is the problem of tracing to the source for digitalized electrical energy meter, utilize the mode that table source separates to gather instantaneous value and the electric degree value of analog quantity at synchronization simultaneously, and Tong Bu traced to the source in digital standard table and digital standard source, establish the standard digital electric energy meter link of tracing to the source to analog quantity, ensure that numeral electric energy metrical accurately and reliable, ensured justice that electricity trading settles accounts and just.
It should be appreciated that it is only exemplary and explanatory that above general description and details hereinafter describe, this utility model can not be limited.
Accompanying drawing explanation
Fig. 1 is that a kind of digitalized electrical energy meter provided in this utility model embodiment synchronizes to trace to the source the structural representation of device.
Detailed description of the invention
Here in detail exemplary embodiment being illustrated, its example representation is in the accompanying drawings.When as explained below relates to accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represents same or analogous key element.Embodiment described in following exemplary embodiment does not represent all embodiments consistent with this utility model.On the contrary, they only with in appended claims describe in detail, the example of device consistent in more of the present utility model.
Each embodiment in this specification all adopts the mode gone forward one by one to describe, between each embodiment identical similar part mutually referring to, what each embodiment stressed is the difference with other embodiments.
Refer to Fig. 1, it is shown that a kind of digitalized electrical energy meter for providing in this utility model embodiment synchronizes to trace to the source the structural representation of device.
As shown in Figure 1, this utility model also provides for a kind of digitalized electrical energy meter and synchronizes to trace to the source device, and the described digitalized electrical energy meter device that synchronizes to trace to the source includes:
Mock standard source；
The mock standard table electrically connected with described mock standard source respectively and high-speed a/d conversion equipment；
The digital standard source electrically connected with described high-speed a/d conversion equipment；
And, the digital standard table electrically connected with described digital standard source.
Further, described digitalized electrical energy meter synchronizes device of tracing to the source and also includes:
8 half high accuracy boards, described 8 half high accuracy boards electrically connect with described mock standard source；
Instantaneous value sampling apparatus, described instantaneous value sampling apparatus electrically connects with described 8 half high accuracy boards, described digital standard source and described high-speed a/d conversion equipment respectively.
Wherein, the analogue signal of 5A, 100V current/voltage that the output of mock standard source is stable, electric current, voltage signal being gone here and there respectively and access mock standard table and high-speed a/d conversion equipment, namely mock standard table and high-speed a/d conversion equipment gather the analogue signal of mock standard source output simultaneously.
Mock standard table gathers the analogue signal in mock standard source, and exports high speed electric energy metrical pulse.
High-speed a/d conversion equipment gathers the analog signals of mock standard source output, and exports instantaneous sampling value to digital standard source, and its sampling rate is 64kHz/s, simultaneously by electric flux signal by high speed fibre pulse transmission to Error Calculator.
Digital standard source receives the digital signal from high-speed a/d conversion equipment, and exports according to 4kHz/s or 12.8kHz/s sampling rate according to IEC61850-9-2 agreement, calculates electric flux simultaneously and exports to Error Calculator in the way of high speed fibre electrical energy pulse.
Digital standard table connects the digital signal gathering digital standard source, and exports in the way of fiber pulse to Error Calculator after calculating electric flux.
Error Calculator gathers described electric power signal N1, described electric power signal X2 and described electric power signal X3 respectively, and produce four error E a=X1-N1, Eb=X2-X1, Ec=X3-X2, Ed=X2-N1 and Ee=X3-N1, obtains the trueness error of digital standard source and digital standard table according to described electric power signal N1, described electric power signal X2 and described electric power signal X3.
Further, the trueness error in digital standard source is calculated according to the difference Ed of described electric power signal X2 and described electric power signal N1；Difference Ee according to described electric power signal X3 and described electric power signal N1 calculates the trueness error of digital standard table.Concrete, Ec should be less than 0.005%, and Ea should be less than 0.02%, wherein the synthetic error in the mock standard source of tracing back of Ee digital standard table, and it should be equal to Ea, Eb, Ec sum in territory at the same time.Ensureing that Ec meets in 0.005% situation, synchronization Ed=Ea+Eb, digital standard source can be completed and trace to the source between mock standard.Ee=Ea+Eb+Ec can be passed through in the manner described above simultaneously, obtain the trueness error of digital standard table.
This utility model is the problem of tracing to the source for digitalized electrical energy meter, utilize the mode that table source separates to gather instantaneous value and the electric degree value of analog quantity at synchronization simultaneously, and Tong Bu traced to the source in digital standard table and digital standard source, establish the standard digital electric energy meter link of tracing to the source to analog quantity, ensure that numeral electric energy metrical accurately and reliable, ensured justice that electricity trading settles accounts and just.
Above-described this utility model embodiment, is not intended that the restriction to this utility model protection domain.Any amendment, equivalent replacement and improvement etc. made within spirit of the present utility model and principle, should be included within protection domain of the present utility model.
The above is only detailed description of the invention of the present utility model, makes to skilled artisans appreciate that or realize this utility model.The multiple amendment of these embodiments be will be apparent to one skilled in the art, and generic principles defined herein when without departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, this utility model is not intended to be limited to the embodiments shown herein, and is to fit to the widest scope consistent with principles disclosed herein and features of novelty.
Claims (2)
1. a digitalized electrical energy meter synchronizes to trace to the source device, it is characterised in that the described digitalized electrical energy meter device that synchronizes to trace to the source includes:
Mock standard source；
The mock standard table electrically connected with described mock standard source respectively and high-speed a/d conversion equipment；
The digital standard source electrically connected with described high-speed a/d conversion equipment；
And, the digital standard table electrically connected with described digital standard source.
2. digitalized electrical energy meter according to claim 1 synchronizes to trace to the source device, it is characterised in that the described digitalized electrical energy meter device that synchronizes to trace to the source also includes:
8 half high accuracy boards, described 8 half high accuracy boards electrically connect with described mock standard source；
Instantaneous value sampling apparatus, described instantaneous value sampling apparatus electrically connects with described 8 half high accuracy boards, described digital standard source and described high-speed a/d conversion equipment respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620086043.0U CN205374726U (en) | 2016-01-28 | 2016-01-28 | Digital electric energy meter device of tracing to source in step |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620086043.0U CN205374726U (en) | 2016-01-28 | 2016-01-28 | Digital electric energy meter device of tracing to source in step |
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| CN205374726U true CN205374726U (en) | 2016-07-06 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106405474A (en) * | 2016-08-31 | 2017-02-15 | 中国电力科学研究院 | Electric energy meter field detection equipment having automatic quantity value source tracing function |
| CN106772204A (en) * | 2016-11-25 | 2017-05-31 | 国网冀北电力有限公司电力科学研究院 | The emulation mode and device of electric energy meter metering circuit |
| CN110967658A (en) * | 2018-09-29 | 2020-04-07 | 武汉格蓝若智能技术有限公司 | Analog input merging unit calibrator tracing method based on digital differential method |
-
2016
- 2016-01-28 CN CN201620086043.0U patent/CN205374726U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106405474A (en) * | 2016-08-31 | 2017-02-15 | 中国电力科学研究院 | Electric energy meter field detection equipment having automatic quantity value source tracing function |
| CN106772204A (en) * | 2016-11-25 | 2017-05-31 | 国网冀北电力有限公司电力科学研究院 | The emulation mode and device of electric energy meter metering circuit |
| CN106772204B (en) * | 2016-11-25 | 2019-06-07 | 国网冀北电力有限公司电力科学研究院 | The emulation mode and device of electric energy meter metering circuit |
| CN110967658A (en) * | 2018-09-29 | 2020-04-07 | 武汉格蓝若智能技术有限公司 | Analog input merging unit calibrator tracing method based on digital differential method |
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