CN103529423B - New digital Watt-hour meter's field test device and method of calibration - Google Patents
New digital Watt-hour meter's field test device and method of calibration Download PDFInfo
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- CN103529423B CN103529423B CN201310487387.3A CN201310487387A CN103529423B CN 103529423 B CN103529423 B CN 103529423B CN 201310487387 A CN201310487387 A CN 201310487387A CN 103529423 B CN103529423 B CN 103529423B
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- 238000012360 testing method Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title abstract description 8
- 230000005611 electricity Effects 0.000 claims abstract description 23
- 238000012546 transfer Methods 0.000 claims abstract description 18
- 238000004891 communication Methods 0.000 claims description 8
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Abstract
The present invention relates to a kind of new digital Watt-hour meter's field test device and method of calibration, wherein device comprises D/A transfer standard source and conventional electric energy meter on-site calibrator, the input of described D/A transfer standard source is connected with tested digital electricity meter output, the output of D/A transfer standard source is connected with conventional electric energy meter on-site calibrator input, meanwhile, conventional electric energy meter on-site calibrator is connected with tested digital electricity meter output. Wherein method comprises that step has: (1) digital electricity meter receives IEC61850-9-1 message, and simultaneously conventional electric energy meter on-site calibrator receives the electric pulse of digital electricity meter; (2) D/A transfer standard source converts data flow to analog signal, output three-phase current voltage; (3) conventional electrical energy meter calibration instrument has compared field-checking. The present invention guarantees the accuracy of electric energy metrical, guarantees to send out, for, electricity consumption tripartite justice, just.
Description
Technical field
The invention belongs to digital Electric Energy Metering Technology field, particularly a kind of new digital Watt-hour meter's field test device and verification sideMethod.
Background technology
Digital transformer substation is because the significant advantage on technical elements receives people's concern just day by day, will become transformer station fromThe developing direction of movingization technology, in digital measuring system, electric energy meter does not use traditional special high-accuracy computation chip, does not carry out yetSampling, data signal is transmitted through fiber optic Ethernet, is not subject to electromagnetic interference, does not produce in theory in the process of energy calculateError, still, due to the restriction of present stage digitizing technique, on programming and algorithm, still can introduce certain error, especiallyBe in service at the scene, due to the complexity of field data, easily produce especially error in dipping, this just needs us to carry out itField-checking, with the deviation of guaranteeing electric energy metrical within the range of permission. But ripe totally digitilized owing to there is no at presentElectric energy meter calibration standard and error propagation system, do not have ripe digital electricity meter on-site calibration device, for field erected yetDigital electricity meter, cannot carry out error checking.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art, a kind of new digital Watt-hour meter's field test device and verification are providedMethod.
The present invention solves its technical problem and takes following technical scheme to realize:
A kind of new digital Watt-hour meter's field test device, comprises D/A transfer standard source and conventional electric energy meter on-site calibrator, instituteState the input of D/A transfer standard source and be connected and receive the data flow that meets communication protocol with tested digital electricity meter output, D/A changes markThe output of accurate source is connected with conventional electric energy meter on-site calibrator input, gives conventional Watt-hour meter's field test by the analog signal output of conversionInstrument, meanwhile, conventional electric energy meter on-site calibrator is connected with tested digital electricity meter output, receives the electricity that digital electricity meter sendsAmount pulse.
And described D/A transfer standard source further comprises D/A modular converter and connected built-in three-phase alternating-current supply,Described D/A modular converter converts the data flow that meets communication protocol receiving to analog signal, and analog signal is again by built-inThree-phase alternating-current supply, exports the three-phase current voltage that conventional electric energy meter on-site calibrator can receive.
A method of calibration for new digital Watt-hour meter's field test device, comprises that step is as follows:
(1), the field-checking interface being equipped with from the digital electricity meter of scene operation, receive actual motion number by Ethernet interfaceThe IEC61850-9-1 message that the corresponding merge cells of word electric energy meter sends, simultaneously conventional electric energy meter on-site calibrator receives numberThe electric pulse that word electric energy meter sends;
(2) D/A transfer standard source converts the data flow that meets communication protocol receiving to analog signal, by built-in three-phaseAC power, exports the three-phase current voltage that conventional Watt-hour meter's field test device can receive;
(3) electric pulse that the electric pulse that conventional electrical energy meter calibration instrument sends and digital electricity meter send compares, and obtains numberThe verify error of word electric energy meter, completes the field-checking of digital electricity meter.
Advantage of the present invention and good effect are
New digital Watt-hour meter's field test device of the present invention can carry out field-checking to the electric energy meter at substation operation, therebyGuarantee the accuracy of electric energy metrical, guarantee to send out, for, electricity consumption tripartite's economic interests and social equity, just.
Brief description of the drawings
Fig. 1 is formation block diagram of the present invention;
Fig. 2 is the formation block diagram in D/A transfer standard source in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the embodiment of the present invention is further described, following examples are descriptive, are not determinate,Can not limit protection scope of the present invention with this.
A kind of new digital Watt-hour meter's field test device, as shown in Figure 1, comprises D/A transfer standard source and the performance of conventional electric energyField tester, the input of described D/A transfer standard source is connected and receives the data flow that meets communication protocol with tested digital electricity meter output,The output of D/A transfer standard source is connected with conventional electric energy meter on-site calibrator input, gives conventional electric energy by the analog signal output of conversionTable on-site calibrator, meanwhile, conventional electric energy meter on-site calibrator is connected with tested digital electricity meter output, receives digital electricity meterThe electric pulse sending.
In specific embodiment of the invention, as shown in Figure 2, described D/A transfer standard source further comprise D/A modular converter andConnected built-in three-phase alternating-current supply, described D/A modular converter converts the data flow that meets communication protocol receiving to mouldAnalog signal, analog signal by built-in three-phase alternating-current supply, is exported the three-phase that conventional electric energy meter on-site calibrator can receive againCurrent/voltage.
A method of calibration for new digital Watt-hour meter's field test device, step is as follows:
(1), the field-checking interface being equipped with from the digital electricity meter of scene operation, receive actual motion number by Ethernet interfaceThe IEC61850-9-1 message that the corresponding merge cells of word electric energy meter sends, simultaneously conventional electric energy meter on-site calibrator receives numberThe electric pulse that word electric energy meter sends;
(2) D/A transfer standard source converts the data flow that meets communication protocol receiving to analog signal, by built-in three-phaseAC power, exports the three-phase current voltage that conventional Watt-hour meter's field test device can receive;
(3) electric pulse that the electric pulse that conventional electrical energy meter calibration instrument sends and digital electricity meter send compares, and obtains numberThe verify error of word electric energy meter, completes the field-checking of digital electricity meter.
Claims (1)
1. a new digital Watt-hour meter's field test device, is characterized in that: comprise D/A transfer standard source and conventional electric energyTable on-site calibrator, described D/A transfer standard source input is connected with tested digital electricity meter output, and reception meets communication protocolData flow, the output of D/A transfer standard source is connected with conventional electric energy meter on-site calibrator input, and the analog signal output of conversion is givenConventional electric energy meter on-site calibrator, meanwhile, conventional electric energy meter on-site calibrator is connected with tested digital electricity meter output, receives numberThe electric pulse that word electric energy meter sends, and described D/A transfer standard source further comprises D/A modular converter and and D/AThe built-in three-phase alternating-current supply that modular converter connects, described D/A modular converter is by the data flow conversion that meets communication protocol receivingBecome analog signal, analog signal is again by built-in three-phase alternating-current supply, exports that conventional electric energy meter on-site calibrator can receiveThree-phase current voltage.
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| CN201310487387.3A CN103529423B (en) | 2013-10-17 | 2013-10-17 | New digital Watt-hour meter's field test device and method of calibration |
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| CN201310487387.3A CN103529423B (en) | 2013-10-17 | 2013-10-17 | New digital Watt-hour meter's field test device and method of calibration |
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| CN103529423A CN103529423A (en) | 2014-01-22 |
| CN103529423B true CN103529423B (en) | 2016-05-04 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103901389A (en) * | 2014-04-09 | 2014-07-02 | 国家电网公司 | Verifying device and method of analog electric signal electric energy meter, analog electronic signal electric energy meter and digital signal electric energy meter |
| CN104007410A (en) * | 2014-06-12 | 2014-08-27 | 国家电网公司 | Digital electric energy meter verifying device |
| CN106338705B (en) * | 2015-07-10 | 2019-03-01 | 侯飞 | A kind of method and apparatus of the verification error for three-phase electric energy metering device |
| CN106338706B (en) * | 2015-07-10 | 2019-09-24 | 侯飞 | A kind of methods, devices and systems of electric energy metering device global error detection |
| CN106093837B (en) * | 2016-06-30 | 2019-06-21 | 中国南方电网有限责任公司超高压输电公司柳州局 | A method of assessment digitalized electrical energy meter measuring accuracy under complex working condition |
| CN106405481A (en) * | 2016-11-11 | 2017-02-15 | 国网冀北电力有限公司电力科学研究院 | Nonlinear-load metering precision measuring method for digital electric energy meter |
| CN107102287A (en) * | 2017-05-04 | 2017-08-29 | 国网上海市电力公司 | Electric energy meter field calibration method |
| CN107196165A (en) * | 2017-07-05 | 2017-09-22 | 国网天津市电力公司电力科学研究院 | Single power supply wave filter changes junction box to multi-path inlet-outlet line |
| CN109557497A (en) * | 2018-10-25 | 2019-04-02 | 国网天津市电力公司电力科学研究院 | A kind of new digital electric energy meter field real-time detecting system |
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