CN203673058U - Electric energy meter field inspecting apparatus - Google Patents
Electric energy meter field inspecting apparatus Download PDFInfo
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- CN203673058U CN203673058U CN201320851164.6U CN201320851164U CN203673058U CN 203673058 U CN203673058 U CN 203673058U CN 201320851164 U CN201320851164 U CN 201320851164U CN 203673058 U CN203673058 U CN 203673058U
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- electric energy
- energy meter
- verifying attachment
- meter field
- field verifying
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- 238000004891 communication Methods 0.000 claims abstract description 22
- 238000005070 sampling Methods 0.000 claims description 32
- 239000013307 optical fiber Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims description 2
- 238000007689 inspection Methods 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 18
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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Abstract
The embodiment of the utility model discloses an electric energy meter field inspecting apparatus comprising a communication interface, a pulse acquisition unit, a pulse counter, and a processor. The communication interface acquires digital electrical quantity outputted by a merging unit in unit time. The pulse acquisition unit acquires pulses outputted by a digital quantity input electric energy meter in the unit time. The pulse counter is connected with the pulse acquisition unit and is used for calculating the number of the pulses outputted by the digital quantity input electric energy meter. The processor is connected with the communication interface and the pulse counter. An electric energy calculating formula and a formula for calculating the electric energy value computed by the electric energy meter are built in the processor in order to achieve field inspection of the errors of the digital quantity input electric energy meter.
Description
Technical field
The utility model relates to instrument and meter field test technical field, more particularly, relates to a kind of electric energy meter field verifying attachment.
Background technology
Along with popularizing of strong intelligent grid, digital quantity input electric energy meter just progressively substitutes traditional AC energy meter and obtains applying more and more widely.
Compared to measuring according to voltage transformer (VT) summation current transformer, and the analog electrical tolerance of output is measured the AC energy meter of energy value, described digital quantity input electric energy meter is to measure according to electronic mutual inductor, and the digital electric amount being forwarded by merge cells is measured energy value, on quantitative model, there is very big-difference in both, therefore traditional AC energy meter field test device is not suitable for the error condition of described digital quantity input electric energy meter to carry out field test, how to develop thus and obtain a kind of electric energy meter field verifying attachment that is applicable to described digital quantity input electric energy meter, become the problem that those skilled in the art need solution badly.
Utility model content
In view of this, the utility model provides a kind of electric energy meter field verifying attachment, to realize, the error condition of digital quantity input electric energy meter is carried out to field test.
A kind of electric energy meter field verifying attachment, comprising:
The communication interface of the digital electric amount that collection merge cells is exported within the unit interval;
Gather the Pulse sampling device of the output pulse of digital quantity input electric energy meter within the described unit interval;
The impulse meter being connected with described Pulse sampling device, for adding up the pulse number of described digital quantity input electric energy meter output;
And the processor being connected with described impulse meter with described communication interface respectively, the built-in electric energy computing formula of wherein said processor and electric energy meter are counted energy value computing formula.
Wherein, described communication interface comprises optical fiber interface.
Alternatively, described electric energy meter field verifying attachment also comprises:
The AC sampling module of the analog electrical tolerance that collection voltage transformer (VT) summation current transformer is exported within the unit interval; And the analog to digital converter being connected with described AC sampling module.
Wherein, described AC sampling module comprises:
The first AC sampling module, for gathering the analog voltage signal of described voltage transformer (VT) output;
With the second AC sampling module, for gathering the analog current signal of described current transformer output.
Wherein, described processor comprises arithmetic circuity.
Wherein, described arithmetic circuity comprises multiplier and divider.
Alternatively, described electric energy meter field verifying attachment also comprises: the display being connected with described processor.
Wherein, described display comprises liquid crystal display.
Alternatively, described electric energy meter field verifying attachment also comprises: the wireless communication module being connected with described processor.
Wherein, the integrated molding structure of described electric energy meter field verifying attachment.
Can find out from above-mentioned technical scheme, in the time inputting electric energy meter as tested ammeter using digital quantity, the utility model only needs communication interface to access the output terminal of merge cells, Pulse sampling device is accessed to the pulse signal output end of tested ammeter simultaneously, can acquire respectively the digital electric amount that described merge cells is exported within the unit interval, and the output pulse of described tested ammeter within the unit interval; Processor is according to the described digital electric amount obtaining, utilize built-in energy calculate formula can calculate actual energy value, according to the statistics number of described output pulse, utilize built-in electric energy meter to count energy value computing formula simultaneously, can calculate the energy value of counting of tested ammeter; Now, the difference of energy value and described counted energy value by more described reality, can determine the grade of errors of described tested ammeter, thereby reach the object that the error condition of digital quantity input electric energy meter is carried out to field test, be conducive to further applying of described digital quantity input electric energy meter.
Brief description of the drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the disclosed a kind of electric energy meter field verifying attachment structural representation of the utility model embodiment mono-;
Fig. 2 is disclosed another the electric energy meter field verifying attachment structural representation of the utility model embodiment bis-.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Referring to Fig. 1, the utility model embodiment mono-discloses a kind of electric energy meter field verifying attachment, is applied to digital quantity input electric energy meter, to realize, the error condition of described digital quantity input electric energy meter is carried out to field test, comprising:
The communication interface 100 of the digital electric amount that collection merge cells is exported within the unit interval;
Gather the Pulse sampling device 200 of the output pulse of digital quantity input electric energy meter within the described unit interval;
The impulse meter 300 being connected with Pulse sampling device 200, for adding up the pulse number of described digital quantity input electric energy meter output;
And the processor 400 being connected with impulse meter 300 with communication interface 100 respectively, wherein the built-in electric energy computing formula of processor 400 and electric energy meter are counted energy value computing formula.
In the present embodiment one, because the built-in described energy calculate formula of processor 400 and described electric energy meter are counted energy value computing formula, processor 400 can be used for according to the digital electric amount of described merge cells output thus, utilize described energy calculate formula, calculate the energy value of actual consumption in this unit interval; Pulse number simultaneously that add up according to impulse meter 300, utilize described electric energy meter to count energy value computing formula (being the corresponding relation between the energy value of measuring of described pulse number and described digital quantity input electric energy meter), calculate the energy value that described digital quantity input electric energy meter measures.
Wherein, processor 400 comprises arithmetic circuity, and to count energy value computing formula be to be all present in processor 400 with the form of arithmetic circuity for described energy calculate formula and described electric energy meter, thereby realize corresponding computing function.Wherein said arithmetic circuity comprises multiplier and divider etc.
Concrete, described digital quantity input electric energy meter is mainly that the digital electric amount that measures and forwarded by merge cells according to electronic mutual inductor is measured energy value; Wherein, described electronic mutual inductor comprises the electronic type voltage transformer of the digital voltage signal for measuring test line, and for measuring the electronic current mutual inductor of digital current signal of described test line; Described merge cells merges for the digital electric amount (comprising described digital voltage signal and described digital current signal) that described electronic type voltage transformer and electronic current mutual inductor are once transported and synchronous processing, and digital electric amount after treatment is transmitted to described digital quantity input electric energy meter according to specific format, realize the metering of the energy value consuming in corresponding period T; Generally, described merge cells is according to IEC61850 standard format composition digital frame, and sends to described digital quantity input electric energy meter.
In electric energy meter (comprising described digital quantity input electric energy meter and the traditional AC energy meter) course of work, its pulse signal output end continues output pulse signal; Between the energy value W that in corresponding period T, in number N, the constant of electric energy meter C of the described pulse signal of output and corresponding period T, electric energy meter measures, there is following corresponding relation formula (being that described electric energy meter is counted energy value computing formula):
W＝N/C，
Wherein, described constant of electric energy meter, i.e. proportionality constant between the indicated number of Electric energy meter KWh counter and rotating disk revolution, the r/ of unit (kWh), is factory setting value; The indicated number of described Electric energy meter KWh counter, the energy value W that in corresponding period T, electric energy meter measures, the kWh of unit; Described rotating disk revolution, i.e. the number N of the described pulse signal of output in corresponding period T, the r of unit.
The present embodiment one is followed quantitative model and the interface mode of described digital quantity input electric energy meter, in the time need to carrying out field test to the error condition of described digital quantity input electric energy meter, communication interface 100 accessed to the output terminal of described merge cells, Pulse sampling device 200 accessed to the pulse signal output end of described digital quantity input electric energy meter, to acquire respectively the digital electric amount of described merge cells output in the unit interval and the output pulse of described digital quantity input electric energy meter simultaneously; Processor 400 is according to the described digital electric amount obtaining, utilize known energy calculate formula can calculate the energy value of actual consumption in this unit interval, simultaneously according to the statistics number of described output pulse, utilize W=N/C formula, can calculate current the measured energy value of described digital quantity input electric energy meter;
Now, energy value by described actual consumption corresponding in this unit interval relatively and described digital quantity are inputted the difference between the energy value that electric energy meter measures, can determine the grade of errors of described digital quantity input electric energy meter, thereby realized, the error condition of described digital quantity input electric energy meter is carried out to field test, facilitated further applying of described digital quantity input electric energy meter; Wherein it should be noted that, the duration of described unit interval can specifically be set as required, does not limit to.
In addition, in the time that described merge cells sends described digital electric amount with the form of the digital fiber signal based on IEC61850 standard to described digital quantity input electric energy meter, corresponding, electric energy meter field verifying attachment described in the present embodiment one also needs correspondence to be provided for receiving the optical fiber interface of this signal,, communication interface 100 comprises optical fiber interface.
Based on embodiment mono-, the utility model embodiment bis-discloses another electric energy meter field verifying attachment, is applied to digital quantity input electric energy meter or AC energy meter, to realize, the error condition of described digital quantity input electric energy meter or described AC energy meter is carried out to field test, referring to Fig. 2, comprising:
Wherein, communication interface 100, the digital electric amount of exporting within the unit interval for gathering merge cells;
The analog to digital converter 600 being connected with AC sampling module 500, for being converted to digital electric amount by described analog electrical tolerance;
From the associated description of embodiment mono-, in the time need to carrying out field test to the error condition of described digital quantity input electric energy meter, only need communication interface 100 to access the output terminal of described merge cells, Pulse sampling device 200 is accessed to the pulse signal output end of described digital quantity input electric energy meter simultaneously; Now AC sampling module 500 and analog to digital converter 600 are all in off working state;
Described AC energy meter is mainly that the analog electrical tolerance that measures, also exports according to voltage transformer (VT) summation current transformer is measured energy value, thereby in the time need to carrying out field test to the error condition of described AC ammeter, only need AC sampling module 500 to access the output terminal of described voltage transformer (VT) and described current transformer, Pulse sampling device 200 is accessed to the pulse signal output end of described AC energy meter simultaneously, now, the digital electric amount that processor 400 is exported according to analog to digital converter 600, utilize energy calculate formula, calculate the energy value of actual consumption, simultaneously according to the pulse number of described AC energy meter output, utilize W=N/C formula, can calculate the energy value that described AC energy meter is measured, thus, difference between energy value by described actual consumption corresponding in this unit interval relatively and the energy value that described AC energy meter is measured, can determine the grade of errors of described AC energy meter, thereby realized, the error condition of described interchange is carried out to field test.
Compared to embodiment mono-, the disclosed described electric energy meter field verifying attachment of the present embodiment two has digital quantity input electric energy meter field checking function and AC energy meter field test function concurrently, has saved cost of investment, has improved the economic benefit of enterprise.
In addition as preferred, electric energy meter field verifying attachment described in above-mentioned arbitrary embodiment all also can comprise: the display being connected with processor 400, described display can be used for every input/output argument that video-stream processor 400 obtains and exports, with the field test result of facilitated staff described digital quantity input electric energy meter or described AC energy meter.
In addition, the electric energy meter field verifying attachment described in above-mentioned arbitrary embodiment all also can comprise: the wireless communication module being connected with processor 400, for result is uploaded to remote monitoring center, realize the remote monitoring of field test result.
Consider the portability of described electric energy meter field verifying attachment, described electric energy meter field verifying attachment all adopts integrated molding structure to design, and is all installed on a circuit board by all modules in described electric energy meter field verifying attachment.
In sum, in the time inputting electric energy meter as tested ammeter using digital quantity, the utility model only needs communication interface to access the output terminal of merge cells, Pulse sampling device is accessed to the pulse signal output end of tested ammeter simultaneously, can acquire respectively the digital electric amount that described merge cells is exported within the unit interval, and the output pulse of described tested ammeter within the unit interval; Processor is according to the described digital electric amount obtaining, utilize built-in energy calculate formula can calculate actual energy value, according to the statistics number of described output pulse, utilize built-in electric energy meter to count energy value computing formula simultaneously, can calculate the energy value of counting of tested ammeter; Now, the difference of energy value and described counted energy value by more described reality, can determine the grade of errors of described tested ammeter, thereby reach the object that the error condition of digital quantity input electric energy meter is carried out to field test, be conducive to further applying of described digital quantity input electric energy meter.
In this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is and the difference of other embodiment, between each embodiment identical similar part mutually referring to.
To the above-mentioned explanation of the disclosed embodiments, make professional and technical personnel in the field can realize or use the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiment, General Principle as defined herein can, in the situation that not departing from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an electric energy meter field verifying attachment, is characterized in that, comprising:
The communication interface of the digital electric amount that collection merge cells is exported within the unit interval;
Gather the Pulse sampling device of the output pulse of digital quantity input electric energy meter within the described unit interval;
The impulse meter being connected with described Pulse sampling device, for adding up the pulse number of described digital quantity input electric energy meter output;
And the processor being connected with described impulse meter with described communication interface respectively, the built-in electric energy computing formula of wherein said processor and electric energy meter are counted energy value computing formula.
2. electric energy meter field verifying attachment according to claim 1, is characterized in that, described communication interface comprises optical fiber interface.
3. electric energy meter field verifying attachment according to claim 1, is characterized in that, described electric energy meter field verifying attachment also comprises:
The AC sampling module of the analog electrical tolerance that collection voltage transformer (VT) summation current transformer is exported within the unit interval;
And the analog to digital converter being connected with described AC sampling module.
4. electric energy meter field verifying attachment according to claim 4, is characterized in that, described AC sampling module comprises:
The first AC sampling module, for gathering the analog voltage signal of described voltage transformer (VT) output;
With the second AC sampling module, for gathering the analog current signal of described current transformer output.
5. electric energy meter field verifying attachment according to claim 1, is characterized in that, described processor comprises arithmetic circuity.
6. electric energy meter field verifying attachment according to claim 5, is characterized in that, described arithmetic circuity comprises multiplier and divider.
7. according to the electric energy meter field verifying attachment described in any one in claim 1-6, it is characterized in that, described electric energy meter field verifying attachment also comprises: the display being connected with described processor.
8. electric energy meter field verifying attachment according to claim 7, is characterized in that, described display comprises liquid crystal display.
9. according to the electric energy meter field verifying attachment described in any one in claim 1-6, it is characterized in that, described electric energy meter field verifying attachment also comprises: the wireless communication module being connected with described processor.
10. electric energy meter field verifying attachment according to claim 9, is characterized in that, the integrated molding structure of described electric energy meter field verifying attachment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851164.6U CN203673058U (en) | 2013-12-20 | 2013-12-20 | Electric energy meter field inspecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320851164.6U CN203673058U (en) | 2013-12-20 | 2013-12-20 | Electric energy meter field inspecting apparatus |
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| Publication Number | Publication Date |
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| CN203673058U true CN203673058U (en) | 2014-06-25 |
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| CN201320851164.6U Expired - Lifetime CN203673058U (en) | 2013-12-20 | 2013-12-20 | Electric energy meter field inspecting apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927656A (en) * | 2019-12-16 | 2020-03-27 | 深圳供电局有限公司 | Electric energy meter error measuring device and control method thereof |
| CN112699824A (en) * | 2021-01-05 | 2021-04-23 | 湖北理工学院 | Method and device for detecting constant of electric energy meter and storage medium |
-
2013
- 2013-12-20 CN CN201320851164.6U patent/CN203673058U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927656A (en) * | 2019-12-16 | 2020-03-27 | 深圳供电局有限公司 | Electric energy meter error measuring device and control method thereof |
| CN110927656B (en) * | 2019-12-16 | 2022-10-28 | 深圳供电局有限公司 | Electric energy meter error measuring device and control method thereof |
| CN112699824A (en) * | 2021-01-05 | 2021-04-23 | 湖北理工学院 | Method and device for detecting constant of electric energy meter and storage medium |
| CN112699824B (en) * | 2021-01-05 | 2022-02-11 | 湖北理工学院 | Method and device for detecting constant of electric energy meter and storage medium |
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Granted publication date: 20140625 |
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