CN104914401A - Period check method for access-type three-phase intelligent electric energy meter automatic verification system - Google Patents
Period check method for access-type three-phase intelligent electric energy meter automatic verification system Download PDFInfo
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Abstract
The invention relates to a period check method for an access-type three-phase intelligent electric energy meter automatic verification system. The verification process on an automatic assembly line verification system comprises a step of preparation in which information of a standard electric energy meter is inputted to a verification system, a step of meter mounting in which a standard electric energy meter tray is put in a binding position and randomly mixed with a normal task electric energy meter and flowed in an automatic verification line body, a step of binding in which an assembly line server binds the bar code of the standard electric energy meter and information of the tray according to a preset scheme, a step of test in which the automatic line carries out execution according to a scheduled test plan, a step of meter discharging in which a PLC automatically recognizes the standard electric energy meter on the tray according to the binding information, and the standard electric energy meter tray executes steps 3, 4 and 5 circularly, and a step of data processing in which verification data are derived. The method of the invention has the advantages that the design is scientific, the operation is convenient and quick, the result is accurate and reliable, period check can be carried out on the electric energy metering device or instrument equipment, and the electric energy value can be accurately and reliably transmitted.
Description
Technical field
The invention belongs to electrical measurement, instrument field, especially a kind of for check method during access type three-phase intelligent electric-energy meter automatic calibration system.
Background technology
Electric energy has become that human society depends on for existence and development must indispensable a kind of important energy source, all activities of the mankind nearly all have close relationship with electricity, and electric energy meter detects the direct measuring instrument that electric energy uses standard, how to ensure that accurate, efficient, the effort of electrical energy meter calibration improve the verification efficiency of electric energy meter, just become pendulum needs solution badly problem in gauge check department at different levels.
In order to keep the reliability of electric power meter, testing apparatus, ensure electric energy value traceability and transitivity accurately and reliably, periodically examining and determine instrument and equipment according to relevant regulations stipulate, calibrate is one of effective way.Generally, in the check-verifying period of electric energy meter calibrating apparatus, electric energy metrical instrument equipment can normally work, the continual and steady of metering performance can be kept, but in actual use, due to the impact of the many factors such as method of operating, environmental baseline, frequency of utilization, transport, vibration, the performance of instrument and equipment may be made to change, ND fault and accident even occur.In order to ensure metrological standard unit, measuring equipment in twice calibrating, calibration intervals accurately and reliably, and keep good degree of confidence, correlometer gauge model is proposed verification request during measurement standard and measuring equipment.
Period verifies the confidence level referred to as keeping equipment Alignment state, between adjacent twice calibrating, calibration, and verification standard or measuring equipment carried out by suitable check standard and suitable method.It is the every metering performance index whether keeping when calibrating last time in order to judgment device that period verifies, and ensures that measuring process is controlled, guarantee transmission of quantity value accurately and reliably and degree of confidence.At present, the method that period verifies adopts detection of being reached the standard grade by electric energy meter to be measured, detection line is provided with and tens ofly reaches the standard grade detection demand to meet a large amount of electric energy meter to hundreds checkout equipment, the calibration of the accuracy of detection of this multiple stage checkout equipment itself becomes the another difficult problem ensureing electric energy meter accuracy of detection, because the volume of existing equipment own is large, weight large, it is mobile to be difficult to, need to carry out dismounting, wiring, calibration detection to checkout equipment respectively by manually carrying correcting device, often each calibration cycle time is long, and labor workload is large, inefficiency.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide a kind of design science, simple operation, accurately and reliably for check method during access type three-phase intelligent electric-energy meter automatic calibration system.
The present invention solves its technical matters and takes following technical scheme to realize:
For a check method during access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: carry out carrying out this period verification in automatic assembly line verification system between twice adjacent regulation calibrating, calibration, step is as follows:
(1) prepare: prepare the standard electric energy meter through mutual inductor access type three-phase intelligent electric-energy meter, this standard electric energy meter precision is far above task electric energy meter; Special bar code is formulated to standard electric energy meter, to distinguish with normal table; By standard electric energy meter Data Enter verification system, automatically can identify according to blind table bar code when upper table;
(2) fill table: table position place on the streamline run, on the empty pallet manually standard electric energy meter being put into arbitrarily or specifying, then standard electric energy meter pallet is put into bindings bit and normal task electric energy meter and mix at random and flow into automatic calibration line body;
(3) bind: standard electric energy meter is after bindings bit, and streamline server can be bound the information of the bar code number of standard electric energy meter and this pallet according to the scheme pre-set;
(4) test: standard electric energy meter flows through on streamline after each test special machine, and transfer matic can perform according to predetermined testing program, selects to do experiment to standard electric energy meter or do not do experiment;
(5) following table: standard electric energy meter is after test finished by each special plane, streamline enters following table flow process according to the flow process of setting, standard electric energy meter is after flowing through following table flow process, PLC can automatically according to the standard electric energy meter on this pallet of binding information identification, do not perform following table flow process, but standard electric energy meter pallet is let pass automatically, standard electric energy meter pallet can flow through bindings bit automatically, and circulation performs step flow process (3), (4), (5);
(6) data processing: the calibrating data of standard electric energy meter are inquired about in systems in which according to task number and standard electric energy meter bar code, data are verified in acquisition during this period and regulation is examined and determine, calibration data is analyzed, and derive this calibrating data.
And the precision of this standard electric energy meter is 0.02 grade or 0.05 grade, and normal tasks electric energy meter to be detected is 2 grades.
And, the principle of work of standard electric energy meter is: voltage, electric current export respectively after the sampling of electric resistance partial pressure sampling summation current transformer becomes small-signal, do A/D conversion and send DSP process, DSP does real-time U, I computing, obtain real power value P, produce ratio by P controlled frequency generator and export in the high-frequency impulse of P, this pulse is electric energy high impulse, obtain the low pulse of electric energy by frequency divider frequency division, high and low frequency electrical energy pulse outputs to interface; While measuring P, DSP completes the measurement of voltage, current true virtual value phase place, frequency etc., and this measured value amount sends robotization calibration streamline to by 485 interfaces.
And period verifies the acquisition pattern of data and is: under identical measuring condition, respectively the BC8 standard cell had good stability is measured during mid-term after the calibrating/calibration cycle of adjacent twice of electric energy meter calibrating apparatus, the data measured by record;
BC8 standard cell is connected to the UREF end of the 1.018V of check standard COM3003, select the REF pattern of check standard, use the data collection and analysis software SSM3000 of Zera company, gather and measure, the indicating value (unit ppm) of display result DC1 to DC6 measured in record, and recording data, data result is set to Xn; By the analysis to data and result, examine measurement standard and whether meet the requirement of calibrating/calibration item.
And output valve DC1 to the DC6 of record DC, carries out 6 times to DC1 to DC6 respectively and measure, be averaged, obtain X1 to X6 (unit ppm), determine whether X1 to X6 is less than 50ppm, as Xn≤50PPM, be judged to be satisfied; Work as Xn>50ppm, be judged to be unsatisfied with.
Advantage of the present invention and good effect are:
1, this method can verify electric energy meter calibrating apparatus and automatic calibration of electric energy meter systematic error, the fundamental error of calibrating verification electric energy meter calibrating apparatus and automatic calibration of electric energy meter system.
2, this method possesses dynamic kernel to function, when system calibration electric energy meter, standard electric energy meter is dynamically mixed in tested table as blind table, circulate in systems in which, enter calibrating unit at random, different epi-position error is monitored in real time, ensure calibrating data accurately and reliably.
3, this method adopts multiple-channel output consistency check, by the circulation of standard electric energy meter in the different epi-position of calibrating unit, tests out the error of corresponding epi-position, thus calculates the multiple-channel output consistance of automatic calibration of electric energy meter system.
4, design science of the present invention, simple operation, accurately and reliably, can realize carrying out period to electric power meter or instrument and equipment to verify, effectively can ensure that electric flux value transmit accurately, reliably, remarkable lifting to the detection efficiency of detection system accuracy and detection accuracy, thus effectively promotes whole detection work efficiency.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is verifying process flow figure of the present invention.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of for check method during access type three-phase intelligent electric-energy meter automatic calibration system, during the present embodiment, check method is between twice adjacent regulation calibrating, calibration, to the verification that the measuring equipment of automatic calibration system carries out, every metering performance index when calibrating last time whether is kept in order to judgment device, guarantee measuring process is controlled, guarantee transmission of quantity value accurately and reliably and degree of confidence.
Concrete verifying process flow step is as follows:
(1) prepare: through the standard electric energy meter of mutual inductor access type three-phase intelligent electric-energy meter, the precision of this standard electric energy meter is 0.02 grade or 0.05 grade, and the electric energy meter that general resident uses, normal tasks electric energy meter namely to be detected is 2 grades, and standard electric energy meter precision is far above task electric energy meter;
Special bar code is formulated to standard electric energy meter, to distinguish with normal table; By standard electric energy meter Data Enter verification system, automatically can identify according to blind table bar code when upper table;
(2) fill table: table position place on the streamline run, on the empty pallet manually standard electric energy meter being put into arbitrarily or specifying, then standard electric energy meter pallet is put into bindings bit and normal task electric energy meter and mix at random and flow into automatic calibration line body;
(3) bind: standard electric energy meter is after bindings bit, and streamline server can be bound the information of the bar code number of standard electric energy meter and this pallet according to the scheme pre-set;
(4) test: standard electric energy meter flows through on streamline after each test special machine, and transfer matic can perform according to predetermined testing program, selects to do experiment to standard electric energy meter or do not do experiment;
(5) following table: standard electric energy meter is after test finished by each special plane, streamline enters following table flow process according to the flow process of setting, standard electric energy meter is after flowing through following table flow process, PLC can automatically according to the standard electric energy meter on this pallet of binding information identification, do not perform following table flow process, but standard electric energy meter pallet is let pass automatically, standard electric energy meter pallet can flow through bindings bit automatically, and circulation performs step flow process (3), (4), (5);
(6) data processing: the calibrating data of standard electric energy meter are inquired about in systems in which according to task number and standard electric energy meter bar code, data are verified in acquisition during this period and regulation is examined and determine, calibration data is analyzed, and derive this calibrating data;
The acquisition pattern that period verifies data verifies detailed rules for the implementation according to during numbering QJ078-2012 device for energy meter standard, period, check method was: under identical measuring condition, respectively the BC8 standard cell had good stability is measured during mid-term after the calibrating/calibration cycle of adjacent twice of electric energy meter calibrating apparatus, the data measured by record;
BC8 standard cell is connected to the UREF end of the 1.018V of check standard COM3003, select the REF pattern of check standard, use the data collection and analysis software SSM3000 of Zera company, gather and measure, the indicating value (unit ppm) of display result DC1 to DC6 measured in record, and recording data, data result is set to Xn;
By the analysis to data and result, examine measurement standard and whether meet the requirement of calibrating/calibration item.
Period verifies interpretation of result
Output valve DC1 to the DC6 of record DC, carries out 6 times to DC1 to DC6 respectively and measures, be averaged, obtain X1 to X6 (unit ppm), determine whether X1 to X6 is less than 50ppm.
Period verifies decision method
Period verifies result and should meet following requirement.
As Xn≤50PPM, be judged to be satisfied; Work as Xn>50ppm, be judged to be unsatisfied with.
The principle of work of the present embodiment Plays electric energy meter is shown in Figure 1:
Voltage, electric current export respectively after the sampling of electric resistance partial pressure sampling summation current transformer becomes small-signal, do A/D conversion and send DSP process, DSP does real-time U, I computing, obtain real power value P, produce ratio by P controlled frequency generator to export in the high-frequency impulse of P, this pulse is electric energy high impulse, and obtain the low pulse of electric energy by frequency divider frequency division, high and low frequency electrical energy pulse outputs to interface.
While measuring P, DSP also completes the measurement of voltage, current true virtual value phase place, frequency etc., and this measured value amount sends robotization calibration streamline to by 485 interfaces.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (5)
1. for a check method during access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: carry out carrying out this period verification in automatic assembly line verification system between twice adjacent regulation calibrating, calibration, step is as follows:
(1) prepare: prepare the standard electric energy meter through mutual inductor access type three-phase intelligent electric-energy meter, this standard electric energy meter precision is far above task electric energy meter; Special bar code is formulated to standard electric energy meter, to distinguish with normal table; By standard electric energy meter Data Enter verification system, automatically can identify according to blind table bar code when upper table;
(2) fill table: table position place on the streamline run, on the empty pallet manually standard electric energy meter being put into arbitrarily or specifying, then standard electric energy meter pallet is put into bindings bit and normal task electric energy meter and mix at random and flow into automatic calibration line body;
(3) bind: standard electric energy meter is after bindings bit, and streamline server can be bound the information of the bar code number of standard electric energy meter and this pallet according to the scheme pre-set;
(4) test: standard electric energy meter flows through on streamline after each test special machine, and transfer matic can perform according to predetermined testing program, selects to do experiment to standard electric energy meter or do not do experiment;
(5) following table: standard electric energy meter is after test finished by each special plane, streamline enters following table flow process according to the flow process of setting, standard electric energy meter is after flowing through following table flow process, PLC can automatically according to the standard electric energy meter on this pallet of binding information identification, do not perform following table flow process, but standard electric energy meter pallet is let pass automatically, standard electric energy meter pallet can flow through bindings bit automatically, and circulation performs step flow process (3), (4), (5);
(6) data processing: the calibrating data of standard electric energy meter are inquired about in systems in which according to task number and standard electric energy meter bar code, data are verified in acquisition during this period and regulation is examined and determine, calibration data is analyzed, and derive this calibrating data.
2. according to claim 1 for check method during access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: the precision of this standard electric energy meter is 0.02 grade or 0.05 grade, and normal tasks electric energy meter to be detected is 2 grades.
3. according to claim 1 for check method during access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: the principle of work of standard electric energy meter is:
Voltage, electric current export respectively after the sampling of electric resistance partial pressure sampling summation current transformer becomes small-signal, do A/D conversion and send DSP process, DSP does real-time U, I computing, obtain real power value P, produce ratio by P controlled frequency generator to export in the high-frequency impulse of P, this pulse is electric energy high impulse, and obtain the low pulse of electric energy by frequency divider frequency division, high and low frequency electrical energy pulse outputs to interface; While measuring P, DSP completes the measurement of voltage, current true virtual value phase place, frequency etc., and this measured value amount sends robotization calibration streamline to by 485 interfaces.
4. according to claim 1 for check method during access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: the acquisition pattern that period verifies data is: under identical measuring condition, respectively the BC8 standard cell had good stability is measured during mid-term after the calibrating/calibration cycle of adjacent twice of electric energy meter calibrating apparatus, the data measured by record;
BC8 standard cell is connected to the UREF end of the 1.018V of check standard COM3003, select the REF pattern of check standard, use the data collection and analysis software SSM3000 of Zera company, gather and measure, the indicating value (unit ppm) of display result DC1 to DC6 measured in record, and recording data, data result is set to Xn;
By the analysis to data and result, examine measurement standard and whether meet the requirement of calibrating/calibration item.
5. according to claim 4 for check method during access type three-phase intelligent electric-energy meter automatic calibration system, it is characterized in that: output valve DC1 to the DC6 of record DC, carry out 6 times to DC1 to DC6 respectively to measure, be averaged, obtain X1 to X6 (unit ppm), determine whether X1 to X6 is less than 50ppm, as Xn≤50PPM, be judged to be satisfied; Work as Xn>50ppm, be judged to be unsatisfied with.
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Cited By (4)
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| CN106526528A (en) * | 2017-01-18 | 2017-03-22 | 国网江苏省电力公司电力科学研究院 | Intermediate checking method and system for automatic verification device of electric energy meter |
| CN107024675A (en) * | 2017-06-22 | 2017-08-08 | 国网四川省电力公司电力科学研究院 | The uninterrupted quality verification method of electric energy metering device examined and determine suitable for streamline |
| CN107561479A (en) * | 2017-08-17 | 2018-01-09 | 国网天津市电力公司电力科学研究院 | Check method during a kind of electric energy meter measurement criteria |
| CN110907883A (en) * | 2019-10-25 | 2020-03-24 | 湖北省计量测试技术研究院 | Metering supervision method and system for automatic verification system of electric energy meter |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106526528A (en) * | 2017-01-18 | 2017-03-22 | 国网江苏省电力公司电力科学研究院 | Intermediate checking method and system for automatic verification device of electric energy meter |
| CN106526528B (en) * | 2017-01-18 | 2018-11-30 | 国网江苏省电力公司电力科学研究院 | Check method and system during a kind of automation calibrating device for electric energy meter |
| CN107024675A (en) * | 2017-06-22 | 2017-08-08 | 国网四川省电力公司电力科学研究院 | The uninterrupted quality verification method of electric energy metering device examined and determine suitable for streamline |
| CN107024675B (en) * | 2017-06-22 | 2019-11-29 | 国网四川省电力公司电力科学研究院 | The uninterrupted quality verification method of electric energy metering device suitable for assembly line calibrating |
| CN107561479A (en) * | 2017-08-17 | 2018-01-09 | 国网天津市电力公司电力科学研究院 | Check method during a kind of electric energy meter measurement criteria |
| CN110907883A (en) * | 2019-10-25 | 2020-03-24 | 湖北省计量测试技术研究院 | Metering supervision method and system for automatic verification system of electric energy meter |
| CN110907883B (en) * | 2019-10-25 | 2023-04-14 | 湖北省计量测试技术研究院 | Metering supervision method and system for automatic verification system of electric energy meter |
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Effective date of registration: 20151216 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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Application publication date: 20150916 |