CN104931915B - A kind of replica test method for single-phase intelligent electric energy meter automatic calibration system - Google Patents
A kind of replica test method for single-phase intelligent electric energy meter automatic calibration system Download PDFInfo
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- CN104931915B CN104931915B CN201510342652.8A CN201510342652A CN104931915B CN 104931915 B CN104931915 B CN 104931915B CN 201510342652 A CN201510342652 A CN 201510342652A CN 104931915 B CN104931915 B CN 104931915B
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Abstract
The present invention relates to a kind of replica test method for single-phase intelligent electric energy meter automatic calibration system, the verifying process flow step in automatic assembly line verification system is as follows：(1) prepare：By standard electric energy meter Data Enter verification system；(2) table is filled：The electric energy meter that standard electric energy meter pallet is put into bindings bit and normal tasks mixes inflow automatic calibration wire body at random；(3) bind：Streamline server can bind the bar code number of standard electric energy meter and the information of the pallet according to the scheme pre-set；(4) test：Transfer matic can be performed according to predetermined testing program；(5) following table：PLC can recognize the standard electric energy meter on the pallet automatically according to binding information, and the circulation of standard electric energy meter support performs the flow of step (3), (4), (5)；(6) data processing：Export calibrating data.Design science of the present invention, simple operation, accurately and reliably, are verified during realizing to electric power meter or instrument and equipment progress, can effectively ensure that electric energy transmission of quantity value is accurate, reliable.
Description
Technical field
It is especially a kind of to be used for single-phase intelligent electric energy meter automatic calibration system the invention belongs to electrical measurement, instrument field
The replica test method of system.
Background technology
Electric energy is depended on for existence and development a kind of indispensable important energy source, all work of the mankind as human society
It is dynamic nearly all to have close relationship with electricity, and electric energy meter is to detect how electric energy, ensure electricity if using the direct measuring instrument of standard
The verification efficiency that is accurate, efficient, making great efforts raising electric energy meter of energy table verification, just needs solution badly as pendulum in gauge check departments at different levels
Certainly the problem of.
In order to keep electric power meter, test equipment reliability, it is ensured that the standard of electric energy value traceability and transitivity
Really reliable, it is one of effective way that instrument and equipment, which is carried out, periodically to examine and determine, calibrate according to related code regulation.Ordinary circumstance
Under, in the check-verifying period of electric energy meter calibrating apparatus, electric energy metrical instrument equipment can normal work, metering performance can be kept
It is continual and steady, but in actual use, due to many factors such as operating method, environmental condition, frequency of use, transport, vibrations
Influence, the performance of instrument and equipment may be made to change, or even occur ND failure and accident.In order to ensure metering
Standard set-up, measuring apparatus calibrating twice, in calibration intervals accurately and reliably, and keep good confidence level, correlation metering
Verification request during specification is proposed to measurement criteria and measuring apparatus.
Period verification refers to keep the confidence level to equipment Alignment state, it is adjacent examine and determine, calibrate twice between, with suitable
When the verification that is carried out to standard or measuring apparatus of check standard and appropriate method.Period verification is whether to judge equipment
Keep last time calibration when every metering performance index, it is ensured that measurement process is controlled, it is ensured that transmission of quantity value accurately and reliably and put
Reliability.At present, the method during which verified is to use to reach the standard grade electric energy meter to be measured detection, is provided with detection line tens of to hundreds of
Platform detection device is reached the standard grade detection demand with meeting a large amount of electric energy meters, and the calibration of the accuracy of detection of many detection devices in itself turns into
The another problem of electric energy meter accuracy of detection is ensured, because existing equipment volume itself is big, weight is big, it is mobile, it is necessary to logical to be difficult to
Cross it is artificial carry that calibrator (-ter) unit is dismounted to detection device respectively, wiring, calibration are detected, often each calibration cycle time
It is long, and labor workload is big, inefficiency.
The content of the invention
It is an object of the invention to overcome in place of the deficiencies in the prior art, there is provided a kind of design science, simple operation, accurate
It is reliable to be used for the replica test method of single-phase intelligent electric energy meter automatic calibration system.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of replica test method for single-phase intelligent electric energy meter automatic calibration system, it is characterised in that：Certainly
Verifying process flow step in dynamicization streamline verification system is as follows：
(1) prepare：The standard electric energy meter of single-phase intelligent electric energy meter is set, and standard electric energy meter precision is higher than task electric energy meter；It is right
Standard electric energy meter formulates special bar code, to be made a distinction with normal meter；By standard electric energy meter Data Enter verification system,
Can be according to blind table bar code automatic identification during upper table；
(2) table is filled：At the streamline upper table position being currently running, manually standard electric energy meter is put into arbitrarily or specified
On empty pallet, standard electric energy meter pallet is then put into bindings bit and normal task electric energy meter mixes inflow automation inspection at random
Alignment body；
(3) bind：Standard electric energy meter is after bindings bit, and streamline server can be according to the scheme pre-set standard
The bar code number of electric energy meter and the information of the pallet are bound；
(4) test：Standard electric energy meter is flowed through on streamline after each test special machine, and transfer matic can be according to predetermined experiment side
Case is performed, and selection is done experiment to standard electric energy meter or do not done experiment；
(5) following table：Standard electric energy meter enters following table on streamline after each special plane finishes experiment according to the flow of setting
Flow, standard electric energy meter is after following table flow is flowed through, and PLC can recognize the standard electric energy on the pallet automatically according to binding information
Table, following table flow is not performed, but standard electric energy meter pallet is let pass automatically, and standard electric energy meter pallet can flow through binding automatically
Position, circulation performs the flow of step (3), (4), (5)；
(6) data processing：The calibrating data of standard electric energy meter are carried out in systems according to task number and standard electric energy meter bar code
Inquiry, obtains same electric power meter test of many times data, so as to obtain verification system replica test result, and exports
The calibrating data.
Moreover, the precision of the standard electric energy meter is 0.02 grade, normal tasks electric energy meter to be detected is 2 grades.
Moreover, the operation principle of standard electric energy meter is：Voltage, electric current output are respectively through electric resistance partial pressure sampling and Current Mutual Inductance
Device sampling becomes after small-signal, does A/D conversions and send DSP processing, DSP does real-time U, I computing, obtains actual power value P, controlled by P
Frequency generator processed produces ratio and exported in P high-frequency impulse, and the pulse is electric energy high impulse, by frequency divider divide electric energy is low
Pulse, high and low frequency electrical energy pulse is output to interface；While measuring P, DSP completes voltage, current true virtual value phase, frequency
Deng measurement, the measured value amount by 485 interfaces send to automation calibration streamline.
Advantages and positive effects of the present invention are：
1st, this method can verify electric energy meter calibrating apparatus and automatic calibration of electric energy meter systematic error, examine and determine school
Test the elementary error of electric energy meter calibrating apparatus and automatic calibration of electric energy meter system.
2nd, this method possesses dynamic kernel to function, in system calibration electric energy meter, standard electric energy meter is dynamically mixed into by
Examine in table as blind table, circulate in systems, it is random to enter calibrating unit, different epitopes error is monitored in real time,
Ensure calibrating data accurately and reliably.
3rd, this method uses multiple-channel output consistency check, and the stream of unit different epitopes is being examined and determine by standard electric energy meter
Turn, the error of corresponding epitope is tested out, so as to calculate the multiple-channel output uniformity of automatic calibration of electric energy meter system.
4th, design science of the present invention, simple operation, accurately and reliably, it is possible to achieve enter to electric power meter or instrument and equipment
Verified between the departure date, can effectively ensure that electric energy transmission of quantity value is accurate, reliable, be obviously improved the detection to detecting system accuracy
Efficiency and detection accuracy, so as to effectively lift whole detection operating efficiency.
Brief description of the drawings
Fig. 1 is circuit theory diagrams of the invention；
Fig. 2 is verifying process flow figure of the invention.
Embodiment
Below in conjunction with the accompanying drawings and the invention will be further described by specific embodiment, following examples are descriptive
, it is not limited, it is impossible to which protection scope of the present invention is limited with this.
A kind of replica test method for single-phase intelligent electric energy meter automatic calibration system, in automatic assembly line inspection
The verifying process flow step determined in system is as follows：
(1) prepare：The standard electric energy meter of single-phase intelligent electric energy meter is set, and the precision of the standard electric energy meter is 0.02 grade, and one
As the electric energy meter that uses of resident, i.e., normal tasks electric energy meter to be detected is 2 grades, and standard electric energy meter precision is far above task electric energy
Table；
Special bar code is formulated to standard electric energy meter, to be made a distinction with normal meter；By standard electric energy meter Data Enter
Verification system, can be according to blind table bar code automatic identification in upper table；
(2) table is filled：At the streamline upper table position being currently running, manually standard electric energy meter is put into arbitrarily or specified
On empty pallet, standard electric energy meter pallet is then put into bindings bit and normal task electric energy meter mixes inflow automation inspection at random
Alignment body；
(3) bind：Standard electric energy meter is after bindings bit, and streamline server can be according to the scheme pre-set standard
The bar code number of electric energy meter and the information of the pallet are bound；
(4) test：Standard electric energy meter is flowed through on streamline after each test special machine, and transfer matic can be according to predetermined experiment side
Case is performed, and selection is done experiment to standard electric energy meter or do not done experiment；
(5) following table：Standard electric energy meter enters following table on streamline after each special plane finishes experiment according to the flow of setting
Flow, standard electric energy meter is after following table flow is flowed through, and PLC can recognize the standard electric energy on the pallet automatically according to binding information
Table, following table flow is not performed, but standard electric energy meter pallet is let pass automatically, and standard electric energy meter pallet can flow through binding automatically
Position, circulation performs the flow of step (3), (4), (5)；
(6) data processing：The calibrating data of standard electric energy meter are carried out in systems according to task number and standard electric energy meter bar code
Inquiry, obtains same electric power meter test of many times data, so as to obtain verification system replica test result, and exports
The calibrating data.
The replica test condition of electric power meter is in reference voltage, reference frequency and national standard JJG597-2005
Under conditions of power factor as defined in middle table 12 and current range carry out, its result of the test should reach national standard JJG597-2005 and
GB/T-17215.701-2011 standard.
The operation principle of the present embodiment Plays electric energy meter is shown in Figure 1：
After voltage, electric current output become small-signal through electric resistance partial pressure sampling summation current transformer sampling respectively, A/D conversions are done
DSP processing is sent, DSP does real-time U, I computing, obtains actual power value P, ratio is produced in P high frequency by P control frequency generators
Pulse is exported, and the pulse is electric energy high impulse, divides to obtain the low pulse of electric energy by frequency divider, high and low frequency electrical energy pulse, which is output to, to be connect
Mouthful.
While measuring P, DSP also completes the measurement of voltage, current true virtual value phase, frequency etc., and the measured value amount passes through
485 interfaces send automation calibration streamline to.
Although disclosing embodiments of the invention and accompanying drawing for the purpose of illustration, those skilled in the art can manage
Solution：Do not departing from the present invention and spirit and scope of the appended claims in, it is various replace, change and modifications all be it is possible,
Therefore, the scope of the present invention is not limited to embodiment and accompanying drawing disclosure of that.
Claims (1)
1. a kind of replica test method for single-phase intelligent electric energy meter automatic calibration system, it is characterised in that：Automatic
The verifying process flow step changed in streamline verification system is as follows：
(1) prepare：The standard electric energy meter of single-phase intelligent electric energy meter is set, and standard electric energy meter precision is higher than task electric energy meter；To standard
Electric energy meter formulates special bar code, to be made a distinction with normal meter；By standard electric energy meter Data Enter verification system, in upper table
When can be according to blind table bar code automatic identification；
The precision of the standard electric energy meter is 0.02 grade, and normal tasks electric energy meter to be detected is 2 grades；
The operation principle of standard electric energy meter is：
After voltage, electric current output become small-signal through electric resistance partial pressure sampling summation current transformer sampling respectively, do A/D conversions and send
DSP processing, DSP does real-time U, I computing, obtains actual power value P, and ratio is produced in P high frequency arteries and veins by P control frequency generators
Punching output, the pulse is electric energy high impulse, divides to obtain the low pulse of electric energy by frequency divider, high and low frequency electrical energy pulse is output to interface；
While measuring P, DSP completes voltage, current true virtual value phase, the measurement of frequency, and the measured value is passed by 485 interfaces
Give automation calibration streamline；
(2) table is filled：At the streamline upper table position being currently running, standard electric energy meter is manually put into empty support that is any or specifying
On disk, standard electric energy meter pallet is then put into bindings bit and normal task electric energy meter mixes inflow automatic calibration line at random
Body；
(3) bind：Standard electric energy meter is after bindings bit, and streamline server can be according to the scheme pre-set standard electric energy
The bar code number of table and the information of the pallet are bound；
(4) test：Standard electric energy meter is flowed through on streamline after each test special machine, and transfer matic can be held according to predetermined testing program
OK, selection is done experiment to standard electric energy meter or not done experiment；
(5) following table：Standard electric energy meter enters following table flow on streamline after each special plane finishes experiment according to the flow of setting,
Standard electric energy meter is after following table flow is flowed through, and PLC can recognize the standard electric energy meter on the pallet automatically according to binding information, not hold
Row following table flow, but standard electric energy meter pallet is let pass automatically, standard electric energy meter pallet can flow through bindings bit automatically, and circulation is held
The flow of row step (3), (4), (5)；
(6) data processing：The calibrating data of standard electric energy meter are looked into systems according to task number and standard electric energy meter bar code
Ask, obtain same electric power meter test of many times data, so that verification system replica test result is obtained, and export should
Examine and determine data.
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| CN201510342652.8A CN104931915B (en) | 2015-06-19 | 2015-06-19 | A kind of replica test method for single-phase intelligent electric energy meter automatic calibration system |
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| CN201510342652.8A CN104931915B (en) | 2015-06-19 | 2015-06-19 | A kind of replica test method for single-phase intelligent electric energy meter automatic calibration system |
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| CN104931915B true CN104931915B (en) | 2017-07-28 |
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| CN201378204Y (en) * | 2009-02-05 | 2010-01-06 | 江苏省电力试验研究院有限公司 | Automatic detecting and metrological characteristic analyzing device for energy meter standard devices |
| CN203825183U (en) * | 2014-05-23 | 2014-09-10 | 国家电网公司 | Automatic binding, reading and identification apparatus of electric energy meter information |
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Effective date of registration: 20151228 Address after: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant after: State Grid Tianjin Electric Power Company Applicant after: State Grid Corporation of China Applicant after: Tianjin Institute of Metrological Supervison and Testing Address before: 300010 Tianjin city Hebei District Wujing Road No. 39 Applicant before: State Grid Tianjin Electric Power Company Applicant before: State Grid Corporation of China |
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