CN106443563A - Field environment based integrated calibrating and analytic device of digital electric energy meter - Google Patents
Field environment based integrated calibrating and analytic device of digital electric energy meter Download PDFInfo
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- CN106443563A CN106443563A CN201610965981.2A CN201610965981A CN106443563A CN 106443563 A CN106443563 A CN 106443563A CN 201610965981 A CN201610965981 A CN 201610965981A CN 106443563 A CN106443563 A CN 106443563A
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- energy meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
A field environment based integrated calibrating and analytic device of digital electric energy meter includes a load collection device, a load reduction device, an analog standard electric energy meter which can convert analog signals in to IEC61850 digital signals and a calibrated digital electric energy meter. The analog standard electric energy meter includes an A/D sampling module sample, an IEC61850 conversion module and an electric energy error calculation module. The device achieves to verify the digital electric energy meter through the actual operating load on the site, and also can verify the digital electric energy meters from different factories in the same field load environment and realize the quantity traceability of the digital electric energy meters. The device is applicable to the digital electric energy meter verification and analysis in the digital environment.
Description
Technical field
The present invention relates to a kind of digitalized electrical energy meter based on site environment comprehensively examines and determine analytical equipment, belong to electric energy meter calibration
Technical field.
Background technology
Built and in the digital transformer substation built in China, electric energy metrical is the numeral input based on IEC61850 standard
The way of energy measuring of amount, its metering device is the digitalized electrical energy meter based on IEC61850 standard.Currently for digitized electricity
The calibrating of energy table is mainly 2 kinds of modes, and one kind is to examine and determine mode based on standard digital power source；Another kind is based on the logical simulation of biography
The mode of power source mark-on quasi- digital electricity meter calibrating.Both calibrating modes and simulation electric energy meter calibration mode generally used now
Essentially identical, it is all to be accessed after various conversions in the indoor voltage being sent standard by calibration power source of experiment, current signal
Tested electric energy meter.But digitalized electrical energy meter actual application environment is not gauge load, but harmonic wave, wave distortion, aperiodic,
Cycle frequency continuous wave move and the various signals such as the quick change of signal amplitude complexity adaptive system, we term it non-linear negative
Lotus.Still can accurately examine and determine its accuracy for the digitalized electrical energy meter installed at the scene then by the way of laboratory verification
There is certain uncertainty.
For these reasons, a kind of new digitalized electrical energy meter of exploitation examines and determine the digitized electricity i.e. based on site environment for the mode
It is very necessary that analytical equipment comprehensively examined and determine by energy table.
Content of the invention
The purpose of the present invention is can not to examine and determine its accuracy with actual field operating load for solving digitalized electrical energy meter
Problem, the present invention proposes a kind of digitalized electrical energy meter based on site environment and comprehensively examines and determine analytical equipment.
Realization the technical scheme is that, a kind of digitalized electrical energy meter based on site environment comprehensively calibrating analysis dress
Put, including load harvester, load reduction apparatus, be converted to the mock standard of IEC61850 digital signal with analogue signal
Electric energy meter and verified digitalized electrical energy meter.Described mock standard electric energy meter includes the sampling of A/D sampling module, IEC61850 turns
Die change block and electric energy error computing module.
The load simulation amount of collection in worksite is delivered to load reduction apparatus by load harvester；Load reduction apparatus are by electric current
Deliver to the A/D sampling module sampling of mock standard electric energy meter with voltage；Sampled signal is given by A/D sampling module respectively
IEC61850 modular converter is simulated conversion and electric energy error computing module carries out Error Calculation；The result of analog-converted is delivered to
Verified digitalized electrical energy meter；Verified digitalized electrical energy meter connects simulation standard electric energy meter, and electrical energy pulse is delivered to electricity
Can error calculating module；Load harvester connects simulation standard electric energy meter, and the digitalized electrical energy meter pulse of collection in worksite is sent
To electric energy error computing module.
Load harvester U1 is mainly used in gathering the actual in-site modeling load of digital electricity meter and its digital electricity meter
Electric energy output pulse.Load reduction apparatus U2 is mainly for generation of the various simulation test letters needed for calibrating digitalized electrical energy meter
Number, the live load that it both can go back the collection of reason load harvester can also be exported needed for calibrating by user's requirement setting
Voltage, current waveform etc..The analogue signal that mock standard electric energy meter U3 is used for load reduction apparatus U2 output is sampled and is changed
For meeting the digital signal of IEC61850 and the calibrating of digitalized electrical energy meter, and the mock standard electric energy meter to more high accuracy
Trace to the source.U4 is accredited digitalized electrical energy meter.
The invention has the beneficial effects as follows, apparatus of the present invention achieve to be entered to digitalized electrical energy meter with live actual motion load
The problem of row calibrating；Achieve the calibrating of the digitalized electrical energy meter to different manufacturers and digitized under the load circumstance of same scene
The magnitude tracing problem of electric energy meter.The present invention is applied to the electric energy meter calibration analysis under digitized environment.
Brief description
Fig. 1 is that the digitalized electrical energy meter based on site environment comprehensively examines and determine analytical equipment operation principle schematic diagram；
In figure, U1 is load harvester；U2 is load reduction apparatus；U3 is mock standard electric energy meter；U4 is accredited number
Word electric energy meter.
Specific embodiment
With reference to embodiments and compare accompanying drawing the present invention is described in detail.
A kind of digitalized electrical energy meter based on site environment of the present embodiment comprehensively examines and determine operation principle such as Fig. 1 of analytical equipment
Shown, this calibrating analytical equipment by load harvester U1, load reduction apparatus U2, analogue signal can be converted to IEC61850
The mock standard electric energy meter U3 of digital signal and tested digitalized electrical energy meter U4 composition.
Load harvester U1 is used for the various electrical quantitys of the digitalized electrical energy meter that scene is run and waveform are acquired,
The main collection analog quantity of combining unit front end and the output pulse of digitalized electrical energy meter.The analog quantity of wherein U1 collection is used for sending
To load reduction apparatus U2 to reduce live actual operating mode, pulse signal is directly sent to mock standard electric energy meter for can not
The digitalized electric energy of producer compares.Load reduction apparatus U2 is used for producing all kinds of transient state, stable state bumpy weather and reduction scene in fact
The analog signal output of border operating condition.Be converted to the mock standard electric energy meter U3 of IEC61850 digital signal with analogue signal
Analogue signal for U2 is exported is converted to the calibrating meeting the digital signal of IEC61850 for digital electricity meter, and to more
The mock standard electric energy meter of high accuracy is traced to the source.
When being digitized electric energy meter laboratory verification, tested according to digitalized electrical energy meter calibrating specification output is corresponding by U2
Signal, the test signal of U2 output directly send mock standard matrix section to carry out electric energy calculating in a road after U3 sampling, and another road turns
Change into and after meeting IEC61850 digital signal, send the U4 test signal being verified as digitalized electrical energy meter by school digitalized electrical energy meter.
The electrical energy pulse of tested digitalized electrical energy meter U4 is input in mock standard electric energy meter U3, calculates work(by the electric energy error of U3 complete
Become the laboratory verification of digitalized electrical energy meter.
When being digitized the calibrating under electric energy meter field working condition, digitized electricity is first gathered by load harvester U1
Live analogue signal and electrical energy pulse can be run by table, the analogue signal that U1 collects reduces through overload reduction apparatus U2 to be occurred
The analogue signal of field operating condition, then the verification being digitized electric energy meter according to above-mentioned laboratory method of calibration.And carrying out
The field digital electric energy meter pulse input that digitalized electrical energy meter under live operating condition when verifying is sampled U1 can achieve to U3
The comparison to the digitalized electrical energy meter that different manufacturers produce under identical conditions.
Magnitude tracing patent of the present invention for digital electricity meter has analogue signal to IEC61850 numeral by exploitation
The mock standard electric energy meter U3 of function switching signal is realized.The operation principle of U3 is that analogue signal is sampled and mistake through U3
After row A/D conversion, its signal is input simultaneously to the electric energy metrical part of U3 and IEC61850 data conversion part it is ensured that simulation
Standard scale and the concordance of digitalized electrical energy meter test signal.
Claims (4)
1. a kind of digitalized electrical energy meter based on site environment comprehensively examines and determine analytical equipment it is characterised in that described device includes
Load harvester, load reduction apparatus, be converted to the mock standard electric energy meter of IEC61850 digital signal with analogue signal
With verified digitalized electrical energy meter;
Described mock standard electric energy meter includes the sampling of A/D sampling module, IEC61850 modular converter and electric energy error computing module；
The load simulation amount of collection in worksite is delivered to load reduction apparatus by described load harvester；Described load reduction apparatus will
Electric current and voltage deliver to the A/D sampling module sampling of mock standard electric energy meter；Sampled signal is given by A/D sampling module respectively
IEC61850 modular converter is simulated conversion and electric energy error computing module carries out Error Calculation；The result of analog-converted is delivered to
Verified digitalized electrical energy meter；Described verified digitalized electrical energy meter connects simulation standard electric energy meter, and electrical energy pulse is sent
To electric energy error computing module；Described load harvester connects simulation standard electric energy meter, by the digitalized electric energy of collection in worksite
Electric energy error computing module is delivered in table pulse.
2. a kind of digitalized electrical energy meter based on site environment comprehensively examines and determine analytical equipment, its feature according to claim 1
It is, described load harvester is used for gathering the electric energy of the actual in-site modeling load of digital electricity meter and its digital electricity meter
Output pulse.
3. a kind of digitalized electrical energy meter based on site environment comprehensively examines and determine analytical equipment, its feature according to claim 1
It is, described load reduction apparatus are used for producing the various analog test signals needed for calibrating digitalized electrical energy meter, and it was both permissible
The live load of also reason load harvester collection can also be by the required voltage of user's requirement setting output calibrating, current wave
Shape.
4. a kind of digitalized electrical energy meter based on site environment comprehensively examines and determine analytical equipment, its feature according to claim 1
It is, the analogue signal that described mock standard electric energy meter is used for the output of load reduction apparatus is sampled and is converted to and meets
The digital signal of IEC61850 and the calibrating of tested digitalized electrical energy meter, trace to the source to the mock standard electric energy meter of more high accuracy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610965981.2A CN106443563A (en) | 2016-11-01 | 2016-11-01 | Field environment based integrated calibrating and analytic device of digital electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610965981.2A CN106443563A (en) | 2016-11-01 | 2016-11-01 | Field environment based integrated calibrating and analytic device of digital electric energy meter |
Publications (1)
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| CN106443563A true CN106443563A (en) | 2017-02-22 |
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| CN201610965981.2A Pending CN106443563A (en) | 2016-11-01 | 2016-11-01 | Field environment based integrated calibrating and analytic device of digital electric energy meter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167760A (en) * | 2017-06-29 | 2017-09-15 | 国网江苏省电力公司电力科学研究院 | A kind of many optical port digitalized electrical energy meter check systems and method based on grid simulation |
| CN107402368A (en) * | 2017-09-19 | 2017-11-28 | 贵州电网有限责任公司电力科学研究院 | A kind of digitalized electrical energy meter actual load calibration device and method of calibration |
| CN107589394A (en) * | 2017-09-19 | 2018-01-16 | 国网江西省电力公司电力科学研究院 | A kind of electric energy meter direct current and even-order harmonic pilot system and method |
| CN108169704A (en) * | 2018-01-20 | 2018-06-15 | 国网江西省电力有限公司电力科学研究院 | A kind of intelligent electric energy meter composition error detection method |
| CN112305487A (en) * | 2020-09-21 | 2021-02-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Laboratory error calibration system and method for digital direct current electric energy meter |
| CN113640733A (en) * | 2021-07-23 | 2021-11-12 | 国网青海省电力公司营销服务中心 | Platform area load reduction simulation system and use method thereof |
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| CN104007410A (en) * | 2014-06-12 | 2014-08-27 | 国家电网公司 | Digital electric energy meter verifying device |
| CN104198980A (en) * | 2014-08-29 | 2014-12-10 | 国家电网公司 | Accuracy evaluation system for digital electric energy meter |
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| JP2015055610A (en) * | 2013-09-13 | 2015-03-23 | 日本電気計器検定所 | Actual load testing device of watthour meter |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167760A (en) * | 2017-06-29 | 2017-09-15 | 国网江苏省电力公司电力科学研究院 | A kind of many optical port digitalized electrical energy meter check systems and method based on grid simulation |
| CN107167760B (en) * | 2017-06-29 | 2019-07-19 | 国网江苏省电力公司电力科学研究院 | A kind of more optical port digitalized electrical energy meter check systems and method based on grid simulation |
| CN107402368A (en) * | 2017-09-19 | 2017-11-28 | 贵州电网有限责任公司电力科学研究院 | A kind of digitalized electrical energy meter actual load calibration device and method of calibration |
| CN107589394A (en) * | 2017-09-19 | 2018-01-16 | 国网江西省电力公司电力科学研究院 | A kind of electric energy meter direct current and even-order harmonic pilot system and method |
| CN107589394B (en) * | 2017-09-19 | 2020-06-23 | 国网江西省电力公司电力科学研究院 | Direct current and even harmonic test system and method for electric energy meter |
| CN108169704A (en) * | 2018-01-20 | 2018-06-15 | 国网江西省电力有限公司电力科学研究院 | A kind of intelligent electric energy meter composition error detection method |
| CN112305487A (en) * | 2020-09-21 | 2021-02-02 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | Laboratory error calibration system and method for digital direct current electric energy meter |
| CN113640733A (en) * | 2021-07-23 | 2021-11-12 | 国网青海省电力公司营销服务中心 | Platform area load reduction simulation system and use method thereof |
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Application publication date: 20170222 |
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