CN107607902A - A kind of computational methods of test process Plays electric energy meter meter constant - Google Patents
A kind of computational methods of test process Plays electric energy meter meter constant Download PDFInfo
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- CN107607902A CN107607902A CN201710616835.3A CN201710616835A CN107607902A CN 107607902 A CN107607902 A CN 107607902A CN 201710616835 A CN201710616835 A CN 201710616835A CN 107607902 A CN107607902 A CN 107607902A
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Abstract
A kind of computational methods of test process Plays electric energy meter meter constant of the present invention, in the case where checklist meter constant is unknown, first estimate a meter constant Cx, checklist is inputted, n pulse of setting goes out an error, corresponding to have a relative error γx；The error γ of electric energy meterxRepresented with relative error, the meter constant of standard electric energy meter is：Cb=Cx (1+ γ x).The inventive method first estimates the meter constant of tested electric energy meter, and using method of standard table, the detection of checklist is carried out according to the meter constant of estimation, then by normal caused error amount in test process, to calculate the correct meter constant of standard electric energy meter.In the detection process of standard electric energy meter, by being computed correctly for meter constant, the time for finding the materials such as specification is reduced, ensures that the quick of electric energy meter detection is smoothed out.
Description
Technical field
The invention belongs to Electric Energy Metering Technology field, especially a kind of meter of test process Plays electric energy meter meter constant
Calculation method.
Background technology
At present, at this stage to the detection process of standard electric energy meter and electric energy meter calibrating apparatus, generally use standard scale
Method is detected, i.e., with high-grade standard electric energy meter compared with tested electric energy meter, this just needs to know tested standard electric
The meter constant of energy table, although meter constant is discussed in detail in operation instructions, in verification process, a lot
When censorship electric energy meter due to a variety of causes, can run into does not have specification on hand, and it is normal not mark pulse on instrument nameplate
Several situations, will result in tested electric energy meter can not detect.
The content of the invention
It is an object of the invention in place of overcome the deficiencies in the prior art, there is provided a kind of test process Plays electric energy meter arteries and veins
Rush the computational methods of constant.
The present invention solves its technical problem and takes following technical scheme to realize：
A kind of computational methods of test process Plays electric energy meter meter constant, it is characterised in that：Perform following steps：
In the case where checklist meter constant is unknown, a meter constant C is first estimatedx, input checklist, setting n
Pulse goes out an error, corresponding to have a relative error γx；The error γ of electric energy meterxRepresented with relative error,
The meter constant of standard electric energy meter is：Cb=Cx (1+ γ x).
Moreover, the computational methods of the meter constant of standard electric energy meter are：According to method of standard table, high-grade standard electric is used
Energy table inputs the meter constant Cb of checklist compared with checklist, and n pulse of setting goes out an error, by error counter certainly
It is dynamic to calculate relative error γ；
γ x=(Wx-Wn)/Wn；In formula：The estimation relative error of γ x-tested electric energy meter, Wx-tested electric energy meter are estimated
Count electric energy, the electric energy of Wn-high-grade electric energy meter；
Wb=n/Cb；Wx=n/Cx, then,
γ=(n/Cb-Wn)/Wn (1)
γ x=(n/Cx-Wn)/Wn (2)
Standard electric energy meter is more than 0.2 grade, then under normal circumstances, standard Watch Error γ≤0.002, γ ≈ 0 is detected, by formula
(1) can obtain, Wn=n/Cb brings formula (2) into, Cb=Cx (1+ γ x) is obtained, so as to draw the meter constant of standard electric energy meter.
Moreover, this method is applied to the overproof checklist in critical field.
Moreover, if γ x exceed ± 99% scope, it can not show, illustrate meter constant estimate Cx substantial deviation arteries and veins
Constant value C b is rushed, Cx should be reevaluated, untill there are γ x to show.
Moreover, Cb calculating total, 100 integral multiple should be taken.
The advantages and positive effects of the present invention are：
The inventive method first estimates the meter constant of tested electric energy meter, using method of standard table, according to the meter constant of estimation
The detection of checklist is carried out, then by normal caused error amount in test process, it is normal to calculate the correct pulse of standard electric energy meter
Number.In the detection process of standard electric energy meter, by being computed correctly for meter constant, reduce find the materials such as specification when
Between, ensure that the quick of electric energy meter detection is smoothed out.
Embodiment
Below by specific embodiment, the invention will be further described, and following examples are descriptive, is not limit
Qualitatively, it is impossible to which protection scope of the present invention is limited with this.
A kind of computational methods of test process Plays electric energy meter meter constant, perform following steps：
In examination criteria electric energy meter or electric energy meter calibrating apparatus, generally use method of standard table, i.e., using high-grade
Standard electric energy meter inputs the meter constant C of checklist compared with checklistb, n pulse of setting goes out an error, by error meter
Number device calculates relative error γ automatically；
The error γ of electric energy meter represents with relative error, therefore, γ=(Wb-Wn)/Wn；In formula：γ-tested electric energy meter
Relative error, WbThe electric energy of-tested electric energy meter, WnThe electric energy of-high-grade electric energy meter；
The innovative point of the present invention is：
In the case where checklist meter constant is unknown, a meter constant C is first estimatedx, input checklist, setting n
Pulse goes out an error, corresponding to have a relative error γx；
The error γ of electric energy meterxRepresented with relative error, therefore, γx=(Wx-Wn)/Wn；In formula：γx- it is detected electric energy meter
Estimation relative error, WxThe estimation electric energy of-tested electric energy meter, WnThe electric energy of-high-grade electric energy meter；
Because Wb=n/Cb；Wx=n/Cx, then,
γ=(n/Cb-Wn)/Wn (1)
γx=(n/Cx-Wn)/Wn (2)
Because standard electric energy meter is more than 0.2 grade, then under normal circumstances, tested standard Watch Error γ≤0.002, therefore γ ≈
0, it can be obtained by formula (1), Wn=n/CbBring formula (2) into, C can be obtainedb=Cx(1+γx), you can to draw standard electric energy meter
Meter constant.
During the use of error calculation method it is noted that it is following some：
(1) in formula Cb=Cx(1+γx) in derivation, it is believed that γ ≈ 0, so, if checklist itself is overproof extremely tight
Weigh, then CbReading can be inaccurate；
This method is applied to the overproof checklist in critical field；
(2) general error counter indication range is between ± 99%, if γxBeyond ± 99% scope, then can not show
Show, illustrate meter constant estimate CxSubstantial deviation meter constant value Cb, C should be reevaluatedx, until there is γxUntill display；
(3)CbCalculating total, should take 100 integral multiple.
Although disclosing embodiments of the invention for the purpose of illustration, it will be appreciated by those skilled in the art that：Not
Depart 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, this
The scope of invention is not limited to embodiment disclosure of that.
Claims (5)
- A kind of 1. computational methods of test process Plays electric energy meter meter constant, it is characterised in that：In checklist meter constant In the case of unknown, a meter constant C is first estimatedx, checklist is inputted, n pulse of setting goes out an error, corresponding meeting There is a relative error γx；The error γ of electric energy meterxRepresented with relative error,The meter constant of standard electric energy meter is：Cb=Cx(1+γx)。
- 2. the computational methods of test process Plays electric energy meter meter constant according to claim 1, it is characterised in that：Mark The computational methods of the meter constant of quasi- electric energy meter are：According to method of standard table, high-grade standard electric energy meter and checklist ratio are used Compared with inputting the meter constant C of checklistb, set n pulse and go out an error, calculate relative miss automatically by error counter Poor γ；γx=(Wx-Wn)/Wn；In formula：γxThe estimation relative error of-tested electric energy meter, WxThe estimation electricity of-tested electric energy meter Can, WnThe electric energy of-high-grade electric energy meter；Wb=n/Cb；Wx=n/Cx, then,γ=(n/Cb-Wn)/Wn (1)γx=(n/Cx-Wn)/Wn (2)Standard electric energy meter is more than 0.2 grade, then under normal circumstances, standard Watch Error γ≤0.002, γ ≈ 0 is detected, by formula (1) It can obtain, Wn=n/CbBring formula (2) into, obtain Cb=Cx(1+γx), so as to draw the meter constant of standard electric energy meter.
- 3. the computational methods of test process Plays electric energy meter meter constant according to claim 1, it is characterised in that：This Method is applied to the overproof checklist in critical field.
- 4. the computational methods of test process Plays electric energy meter meter constant according to claim 1, it is characterised in that：If γxIt beyond ± 99% scope, then can not show, illustrate meter constant estimate CxSubstantial deviation meter constant value Cb, should be again Estimate Cx, until there is γxUntill display.
- 5. the computational methods of test process Plays electric energy meter meter constant according to claim 1, it is characterised in that：Cb Calculating total, should take 100 integral multiple.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710616835.3A CN107607902A (en) | 2017-07-26 | 2017-07-26 | A kind of computational methods of test process Plays electric energy meter meter constant |
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| CN201710616835.3A CN107607902A (en) | 2017-07-26 | 2017-07-26 | A kind of computational methods of test process Plays electric energy meter meter constant |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655779A (en) * | 2018-12-29 | 2019-04-19 | 深圳市科陆精密仪器有限公司 | Electric energy meter is had good luck read method, detection method, the apparatus and system of electricity |
| CN110174574A (en) * | 2019-06-20 | 2019-08-27 | 江苏方天电力技术有限公司 | Integrated protection and monitoring device electrical measurement calibrating installation and electric flux calibration method |
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| CN201600446U (en) * | 2010-01-04 | 2010-10-06 | 山东电力研究院 | Device for detecting error of electric energy meter under harmonic condition by watt-second method |
| CN101957439A (en) * | 2010-02-10 | 2011-01-26 | 江西省电力科学研究院 | Sampling and calculating separated type electric energy meter calibrating method and electric energy meter site parameter recorder |
| CN103424734A (en) * | 2013-08-23 | 2013-12-04 | 周光远 | On-line calibration method of electronic watt-hour meter |
| CN105607031A (en) * | 2016-03-23 | 2016-05-25 | 国网四川省电力公司电力科学研究院 | High-voltage electric energy meter calibrating device |
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| JPS5552121A (en) * | 1978-10-13 | 1980-04-16 | Tokyo Electric Power Co Inc:The | Demand control unit |
| CN201600446U (en) * | 2010-01-04 | 2010-10-06 | 山东电力研究院 | Device for detecting error of electric energy meter under harmonic condition by watt-second method |
| CN101957439A (en) * | 2010-02-10 | 2011-01-26 | 江西省电力科学研究院 | Sampling and calculating separated type electric energy meter calibrating method and electric energy meter site parameter recorder |
| CN103424734A (en) * | 2013-08-23 | 2013-12-04 | 周光远 | On-line calibration method of electronic watt-hour meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655779A (en) * | 2018-12-29 | 2019-04-19 | 深圳市科陆精密仪器有限公司 | Electric energy meter is had good luck read method, detection method, the apparatus and system of electricity |
| CN109655779B (en) * | 2018-12-29 | 2021-11-19 | 深圳市科陆精密仪器有限公司 | Reading method, detection method, device and system for electric energy meter running electric quantity |
| CN110174574A (en) * | 2019-06-20 | 2019-08-27 | 江苏方天电力技术有限公司 | Integrated protection and monitoring device electrical measurement calibrating installation and electric flux calibration method |
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