CN105093163A - Error debugging method for electronic electric energy meter - Google Patents
Error debugging method for electronic electric energy meter Download PDFInfo
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- CN105093163A CN105093163A CN201510484651.7A CN201510484651A CN105093163A CN 105093163 A CN105093163 A CN 105093163A CN 201510484651 A CN201510484651 A CN 201510484651A CN 105093163 A CN105093163 A CN 105093163A
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Abstract
The invention relates to an error debugging method for an electronic electric energy meter, and belongs to the technical field of electric energy meter debugging. The error debugging method comprises the steps of firstly judging the accuracy and the stability of a standard meter in output; continuously reading power effective values of the standard meter and power effective values of an electric energy meter to be tested if the standard meter conforms to requirements; respectively calculating an average power effective value of the standard meter and an average power effective value of the electric energy meter to be tested according to the read power effective values of the standard meter and the read power effective values of the electric energy meter to be tested; and finally calculating an error of the electric energy meter to be tested according to the acquired average power effective value of the standard meter and the acquired average power effective value of the electric energy meter to be tested, and carrying out debugging on the electric energy meter to be tested according to the error. According to the invention, the error of the electric energy meter is calculated through a mode of the power effective values, the error calculation time of the electric energy meter is shortened, and the error debugging efficiency is improved. Meanwhile, the invention can also judge the accuracy and the stability of a debugging and detecting platform in output, thereby avoiding a quality problem caused by problems of the debugging and detecting platform.
Description
Technical field
The present invention relates to a kind of error adjustment method of electronic electric energy meter, belong to electric energy meter debugging technical field.
Background technology
The error adjustment method of traditional electronic electric energy meter, be that the standard scale adjustment platform contrast of being examined and determine by national structure contrasts at the electric flux of certain hour section internal standard table and electric energy meter the error in dipping calculating electric energy meter, go the coefficient adjusting electric energy meter to reach the object of accurate measurement by the error of electric energy meter.But this error adjustment method efficiency is low, especially when debugging small area analysis gear (below 5%Ib), needs the time more grown, causing human cost high.
Summary of the invention
The object of this invention is to provide a kind of error adjustment method of electronic electric energy meter, to shorten the error acquisition time of electronic electric energy meter, improve error debugging efficiency.
The present invention solves the problems of the technologies described above the error adjustment method providing a kind of electronic electric energy meter, and this adjustment method comprises the following steps:
1) select an electric energy meter as standard scale, judge whether the accuracy that this standard scale exports and degree of stability meet the requirements;
2) if this standard scale meets the requirements, then this standard scale power effective value and electric energy meter power effective value to be measured is read continuously;
3) standard scale average power effective value and electric energy meter average power effective value to be measured is calculated respectively according to read standard scale power effective value and electric energy meter power effective value to be measured;
4) calculate electric energy meter error to be measured according to the standard scale average power effective value obtained and electric energy meter average power effective value to be measured, and according to this error, electric energy meter to be measured is debugged.
Described electric energy meter error formula to be measured is:
Wherein Err% is electric energy meter error, P
electric energy meterfor the mean value of electric energy meter power effective value, P
standard scalefor the mean value of standard scale power effective value.
Described step 1) determination methods of degree of stability that exports of Plays table is as follows:
A. receive the power effective value of M standard scale continuously, and calculate the mean value of the power effective value of a described M standard scale;
B. compared by the mean value of the difference of M power effective value and the mean value of power effective value calculated with power effective value respectively, whether judgment bias is in setting range;
If C. in setting range, then this standard scale stable output of instructions, otherwise, illustrate that this standard scale exports unstable.
Described step 1) determination methods of accuracy that exports of Plays table is as follows:
A. receive the power effective value of M standard scale continuously, and calculate the standard value of the power effective value of a described M standard scale;
B. the standard value of the difference of M power effective value and the standard value of power effective value calculated with power effective value compared respectively, whether judgment bias is in setting range;
If c. in setting range, then this standard scale of instructions exports accurately, otherwise, illustrate that this standard scale exports inaccurate.
Described step 2) in electric energy meter power effective value to be measured be that power register by reading this electric energy meter obtains, it is each that to read gap periods be the electric energy meter register update cycle.
Described step 3) average power effective value computation process in need to remove maximum, the minimum value in standard scale power effective value and electric energy meter power effective value to be measured respectively, to get rid of abnormal hop value.
Setting range in described step B is ± 0.1%, and the setting range in step b is ± 0.3%.
The invention has the beneficial effects as follows: the present invention first criterion table export accuracy and degree of stability; If this standard scale meets the requirements, read this standard scale power effective value and electric energy meter power effective value to be measured continuously; Standard scale average power effective value and electric energy meter average power effective value to be measured is calculated respectively according to read standard scale power effective value and electric energy meter power effective value to be measured; The standard scale average power effective value that last basis obtains and electric energy meter average power effective value to be measured calculate electric energy meter error to be measured, and debug electric energy meter to be measured according to this error.The present invention calculates the error of electric energy meter by the mode of power effective value, shorten electric energy meter error computing time, improve the efficiency of error debugging, the present invention simultaneously can also judge accuracy and the degree of stability of adjusting the output of inspection platform, avoids the quality problems because adjusting inspection platform problem to occur.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the error adjustment method of electronic electric energy meter;
Fig. 2 is the process flow diagram of the degree of stability of standard scale output and the deterministic process of accuracy.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further.
The flow process of the error adjustment method of electronic electric energy meter of the present invention as shown in Figure 1, first criterion table export accuracy and degree of stability; If this standard scale meets the requirements, read this standard scale power effective value and electric energy meter power effective value to be measured continuously; Standard scale average power effective value and electric energy meter average power effective value to be measured is calculated respectively according to read standard scale power effective value and electric energy meter power effective value to be measured; The standard scale average power effective value that last basis obtains and electric energy meter average power effective value to be measured calculate electric energy meter error to be measured, and debug electric energy meter to be measured according to this error.Concrete implementation process is as follows:
1. criterion table export accuracy and degree of stability
As shown in Figure 2, detailed process is as follows for the flow process that accuracy and degree of stability judge:
The power effective value of continuous reception M standard scale, and calculate the mean value of the power effective value of a described M standard scale.Receive the power effective value of 3 standard scales in the present embodiment continuously, each gap periods is the update cycle of standard scale power effective value, asks the mean value of these three power effective values.
Compared by the mean value of the difference of M power effective value and the mean value of power effective value calculated with power effective value respectively, whether judgment bias is in setting range.Compared by the mean value of the difference of the mean value of 3 power effective values and power effective value with power effective value respectively in the present embodiment, setting range is ± 0.1%.
If in setting range, then this standard scale stable output of instructions, otherwise, illustrate that this standard scale exports unstable.Deviation thinks stable output within ± 0.1%, if beyond deviation 0.1%, then think export unstable; Utilize slippage method to continue received power effective value to judge, according to check-out console characteristic, if reach stable requirement within a certain period of time, then carry out power error method, if do not reach stable requirement within a certain period of time, then software prompt is reported to the police, and by maintenance of equipment, personnel overhaul stage body.
Export the determination methods of accuracy except correlative value and criterion difference, other all prevent consistent with the judgement of degree of stability.The correlative value of output stability is the mean value of power effective value, and the correlative value exporting accuracy is the standard value of power effective value; The deviation range of output stability is ± 0.3%.
If 2. this standard scale meets the requirements, then read this standard scale power effective value and electric energy meter power effective value to be measured continuously, electric energy meter power effective value to be measured is that the power register by reading this electric energy meter obtains, and each reading gap periods is the electric energy meter register update cycle.
According to the characteristic of current computation chip, in the present embodiment, the renewal rate of power register is within 500ms, the renewal rate of standard scale can be faster, general within 200ms, continuous reading power meters power effective value 11 times, each reading gap periods is the electric energy meter register update cycle, while reading power meters power effective value register, reads standard scale power effective value.
3. calculate standard scale average power effective value and electric energy meter average power effective value to be measured respectively according to read standard scale power effective value and electric energy meter power effective value to be measured.
In the present embodiment, the calculating of average power effective value adopts the mode removing maximal value and minimum value, the numerical value that the present embodiment reads is 11, respectively 11 power effective values of 11 of electric energy meter to be measured power effective values and standard scale are sorted according to size, remove two maximal values and two minimum value, 7 remaining data are averaging and obtain the average power effective value of electric energy meter and the average power effective value of standard scale.If the power effective value read is 21, then removes maximum 5 performance numbers and minimum 5 performance numbers respectively, ask the mean value of remaining 11 values as average power effective value.
4. calculate electric energy meter error to be measured according to the standard scale average power effective value obtained and electric energy meter average power effective value to be measured, and according to this error, electric energy meter to be measured is debugged.
In the present embodiment, the computing formula of electric energy meter error is as follows:
Wherein Err% is electric energy meter error, P
electric energy meterfor the mean value of electric energy meter power effective value, P
standard scalefor the mean value of standard scale power effective value.
Claims (7)
1. an error adjustment method for electronic electric energy meter, is characterized in that, this adjustment method comprises the following steps:
1) select an electric energy meter as standard scale, judge whether the accuracy that this standard scale exports and degree of stability meet the requirements;
2) if this standard scale meets the requirements, then this standard scale power effective value and electric energy meter power effective value to be measured is read continuously;
3) standard scale average power effective value and electric energy meter average power effective value to be measured is calculated respectively according to read standard scale power effective value and electric energy meter power effective value to be measured;
4) calculate electric energy meter error to be measured according to the standard scale average power effective value obtained and electric energy meter average power effective value to be measured, and according to this error, electric energy meter to be measured is debugged.
2. the error adjustment method of electronic electric energy meter according to claim 1, is characterized in that, described electric energy meter error formula to be measured is:
Wherein Err% is electric energy meter error, P
electric energy meterfor the mean value of electric energy meter power effective value, P
standard scalefor the mean value of standard scale power effective value.
3. the error adjustment method of electronic electric energy meter according to claim 2, is characterized in that, described step 1) determination methods of degree of stability that exports of Plays table is as follows:
A. receive the power effective value of M standard scale continuously, and calculate the mean value of the power effective value of a described M standard scale;
B. compared by the mean value of the difference of M power effective value and the mean value of power effective value calculated with power effective value respectively, whether judgment bias is in setting range;
If C. in setting range, then this standard scale stable output of instructions, otherwise, illustrate that this standard scale exports unstable.
4. the error adjustment method of electronic electric energy meter according to claim 3, is characterized in that, described step 1) determination methods of accuracy that exports of Plays table is as follows:
A. receive the power effective value of M standard scale continuously, and calculate the standard value of the power effective value of a described M standard scale;
B. the standard value of the difference of M power effective value and the standard value of power effective value calculated with power effective value compared respectively, whether judgment bias is in setting range;
If c. in setting range, then this standard scale of instructions exports accurately, otherwise, illustrate that this standard scale exports inaccurate.
5. the error adjustment method of electronic electric energy meter according to claim 4, it is characterized in that, described step 2) in electric energy meter power effective value to be measured be that power register by reading this electric energy meter obtains, it is each that to read gap periods be the electric energy meter register update cycle.
6. the error adjustment method of electronic electric energy meter according to claim 5, it is characterized in that, described step 3) average power effective value computation process in need to remove maximum, the minimum value in standard scale power effective value and electric energy meter power effective value to be measured respectively, to get rid of abnormal hop value.
7. the error adjustment method of electronic electric energy meter according to claim 6, is characterized in that, the setting range in described step B is ± 0.1%, and the setting range in step b is ± 0.3%.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105510788A (en) * | 2016-02-03 | 2016-04-20 | 珠海迈科智能科技股份有限公司 | Electronic product production line and voltage withstand test system thereof |
| CN106814342A (en) * | 2017-01-12 | 2017-06-09 | 华立科技股份有限公司 | Electric energy meter quick calibration method |
| CN109738850A (en) * | 2019-03-11 | 2019-05-10 | 广东电网有限责任公司 | A kind of electric energy measuring equipment calibrating installation based on the switching of multi-standard table |
| CN110426669A (en) * | 2019-08-12 | 2019-11-08 | 安徽南瑞中天电力电子有限公司 | A kind of automatic screening methods of electric energy meter based on error testing |
| CN113376564A (en) * | 2021-06-01 | 2021-09-10 | 国网河北省电力有限公司营销服务中心 | Smart electric meter metering correction method and device based on data analysis and terminal |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510788A (en) * | 2016-02-03 | 2016-04-20 | 珠海迈科智能科技股份有限公司 | Electronic product production line and voltage withstand test system thereof |
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| CN109738850A (en) * | 2019-03-11 | 2019-05-10 | 广东电网有限责任公司 | A kind of electric energy measuring equipment calibrating installation based on the switching of multi-standard table |
| CN110426669A (en) * | 2019-08-12 | 2019-11-08 | 安徽南瑞中天电力电子有限公司 | A kind of automatic screening methods of electric energy meter based on error testing |
| CN113376564A (en) * | 2021-06-01 | 2021-09-10 | 国网河北省电力有限公司营销服务中心 | Smart electric meter metering correction method and device based on data analysis and terminal |
| CN113376564B (en) * | 2021-06-01 | 2022-12-13 | 国网河北省电力有限公司营销服务中心 | Smart electric meter metering correction method and device based on data analysis and terminal |
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