CN108169704A - A kind of intelligent electric energy meter composition error detection method - Google Patents
A kind of intelligent electric energy meter composition error detection method Download PDFInfo
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- CN108169704A CN108169704A CN201810055993.0A CN201810055993A CN108169704A CN 108169704 A CN108169704 A CN 108169704A CN 201810055993 A CN201810055993 A CN 201810055993A CN 108169704 A CN108169704 A CN 108169704A
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- 238000001514 detection method Methods 0.000 title description 9
- 238000004364 calculation method Methods 0.000 claims abstract description 18
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- 238000004321 preservation Methods 0.000 claims abstract description 11
- 238000004458 analytical method Methods 0.000 claims abstract description 6
- 238000000034 method Methods 0.000 claims description 10
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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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Abstract
A kind of electric energy meter comprehensive error evaluation method, step are as follows：（1）The voltage signal and current signal of electric energy meter when electric signal recorder collection site is run；（2）Temperature Humidity Sensor completes the humiture collection of electric energy meter local environment and preservation during the operation of scene；（3）The data of preservation are transferred to DSP；（4）DSP builds live operating condition database by the analysis and processing to data；（5）According to the information of live operating condition database, the source output of control unit control calibration power meets the voltage signal and current signal of electric energy meter field operating condition；（6）Control unit controls Alternate hot and humid case to generate the humiture environment identical with electric energy meter field operating condition simultaneously；（7）The pulse that error calculation unit is sent out according to the pulse port of checklist and standard scale calculates composition error of the checklist under this operating condition；（8）Display shows checklist composition error.
Description
Technical field
The present invention relates to a kind of intelligent electric energy meter composition error detection methods, belong to electric energy meter detection technique field.
Background technology
As the important component of intelligent grid, the metering accuracy of intelligent electric energy meter directly affects the clearing of the electricity charge.
Existing standard proposes requirement to meter characteristic of the electric energy meter under standard sine signal and various single influence amounts, consideration
Influence amount mainly includes temperature, each rahmonic（Such as direct current and even-order harmonic, odd harmonic, subharmonic, peaked wave, square wave and height
Subharmonic）, three-phase imbalance（For three-phase and four-line and three line three-phase electric energy meters）, voltage acute variation and frequency fluctuation etc..So
And when being run under actual field environment, multiple influence amounts often exist simultaneously, the existing detection for only considering single amount and influencing
Method obviously cannot accurately reflect the metering performance of electric energy meter.International Legal Organization（OIML）The R46 worlds of formulation are built
View, assuming that each influence amount be independent of each other and to electric energy meter metering performance influence distribution Gaussian distributed under the premise of, carry
A kind of electric energy meter comprehensive error evaluation method is gone out.But this method is also only to carry out each single influence amount defined in standard
Random combine can not really reflect ambient conditions and load character of the electric energy meter in actual motion.
Invention content
The object of the present invention is in order to overcome the deficiencies in the prior art, a kind of intelligent electric energy meter composition error inspection is proposed
Survey method.
Realize that technical scheme is as follows：A kind of intelligent electric energy meter composition error detection method, the method pass through
Electric signal recorder and Temperature Humidity Sensor realize the information collection of electric energy meter field operating condition, and by the data transmission of preservation
To DSP；DSP obtains the type and power for each influence amount exerted one's influence simultaneously to checklist by the analysis and processing to data
Weight, and then build live operating condition database；According to the information of live operating condition database, control unit control standard work(
Rate source exports the voltage signal and current signal for meeting electric energy meter field operating condition, while controls the generation of Alternate hot and humid case and electricity
The identical humiture environment of field operating condition can be showed；Error calculation unit is sent out according to the pulse port of checklist and standard scale
Pulse calculate composition error of the checklist under this operating condition.
A kind of electric energy meter comprehensive error evaluation method, is as follows：
（1）When the acquisition of electric signal recorder and saving scene operation on the voltage signal and current circuit of electrical energy meter electricity crimping road
Current signal；
（2）Temperature Humidity Sensor and electric signal recorder time synchronization, electric energy meter local environment is warm and humid when the scene of completion is run
Degree acquisition and preservation；
（3）The data of preservation are transferred to DSP by electric signal recorder and Temperature Humidity Sensor；
（4）DSP builds live operating condition database by the analysis and processing to data；
（5）According to the information of live operating condition database, the source output of control unit control calibration power meets electric energy meter field
The voltage signal and current signal of operating condition；
（6）Control unit controls Alternate hot and humid case to generate the humiture environment identical with electric energy meter field operating condition simultaneously；
（7）The pulse that error calculation unit is sent out according to the pulse port of checklist and standard scale calculates checklist and runs herein
Composition error under operating mode；
（8）Display shows the concrete numerical value of checklist composition error.
A kind of electric energy meter comprehensive error evaluation device, it is single including electric signal recorder, Temperature Humidity Sensor, DSP, control
Member, live operating condition database, error calculation unit, standard scale, display, calibration power source and Alternate hot and humid case；Telecommunications
Number recorder and Temperature Humidity Sensor connect the input terminal of DSP respectively；The live operating condition database of output terminal connection of DSP
Input terminal；The input terminal of the output terminal connection control unit of live operating condition database；Control unit connects standard work(respectively
Rate source and Alternate hot and humid case；Calibration power source connects the checklist for being placed in Alternate hot and humid case；Standard scale connects calibration power respectively
Source and checklist；Standard scale and checklist connect the input terminal of error calculation unit respectively；The output terminal of error calculation unit connects
Connect display.
The current circuit of the standard scale is connected with the current circuit of the checklist；The pulse ends of standard scale and checklist
Mouth is connect with error calculation unit.
The source output of described control unit control calibration power meets the voltage signal and electric current of electric energy meter field operating condition
Signal, while Alternate hot and humid case is controlled to generate the humiture environment identical with electric energy meter field operating condition.
The error calculation unit calculates checklist herein according to the pulse that the pulse port of checklist and standard scale is sent out
Composition error under operating condition, and pass through display and show its concrete numerical value.
The invention has the advantages that the present invention is based on calculation separating thought is adopted, a kind of intelligent electric energy meter composition error is proposed
The electric signal of real-time synchronization acquisition and temperature-humidity signal record are preserved to DSP, pass through the analyzing and processing structure of DSP by detection method
Live actual operating mode database is built, control unit calls database information and controls calibration power source and Alternate hot and humid case,
Simulate the live actual operating mode of electric energy meter, and then detectable composition error of the electric energy meter under multiple influence amount.
Description of the drawings
Fig. 1 is the structural principle block diagram of the present invention；
Fig. 2 is the flow chart of the method for the present invention.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
It is the principle schematic diagram of the present invention shown in Fig. 1, electric signal recorder detects electric energy meter voltage circuit when scene is run
On voltage signal and current circuit on current signal, obtain electrical signal information；Temperature Humidity Sensor can synchronize detection scene
Temperature and humidity information during operation residing for electric energy meter；The data of preservation are transferred to by signal recorder and Temperature Humidity Sensor
DSP, DSP are built corresponding mathematical model, are obtained simultaneously to being detected top application by the extraction and analysis of the characteristic feature amount to data
Add the type and weight of each influence amount of influence, form live operating condition database；During detection, control unit is run from scene
Corresponding information is extracted in floor data library, and quasi- power source output is controlled to meet the voltage signal and electricity of electric energy meter field operating condition
Signal is flowed, while Alternate hot and humid case is controlled to generate the humiture environment identical with electric energy meter field operating condition；To be detected
Table relative error, can be used method of standard table, i.e. the voltage circuit of standard scale is in parallel with the voltage circuit of checklist；The electricity of standard scale
Flow Line is connected with the current circuit of checklist；The pulse port of standard scale and checklist is connect with error calculation unit；Accidentally
Poor computing unit is comprehensive under this operating condition according to the pulse calculating checklist that the pulse port of checklist and standard scale is sent out
Error is closed, and passes through display and shows its concrete numerical value.
Fig. 2 is flow chart of the method for the present invention, and a kind of electric energy meter comprehensive error evaluation method of the present embodiment, specific steps are such as
Under：
（1）When the acquisition of electric signal recorder and saving scene operation on the voltage signal and current circuit of electrical energy meter electricity crimping road
Current signal；
（2）Temperature Humidity Sensor and electric signal recorder time synchronization, electric energy meter local environment is warm and humid when the scene of completion is run
Degree acquisition and preservation；
（3）The data of preservation are transferred to DSP by electric signal recorder and Temperature Humidity Sensor；
（4）DSP builds live operating condition database by the analysis and processing to data；
（5）According to the information of live operating condition database, the source output of control unit control calibration power meets electric energy meter field
The voltage signal and current signal of operating condition；
（6）Control unit controls Alternate hot and humid case to generate the humiture environment identical with electric energy meter field operating condition simultaneously；
（7）The pulse that error calculation unit is sent out according to the pulse port of checklist and standard scale calculates checklist and runs herein
Composition error under operating mode；
（8）Display shows the concrete numerical value of checklist composition error.
The type and weight for each influence amount that the present embodiment determines simultaneously to exert one's influence to checklist according to the data of acquisition,
By restoring the live actual operating mode of electric energy meter, its metering performance under multiple influence collective effect is examined.
Claims (6)
- A kind of 1. electric energy meter comprehensive error evaluation method, which is characterized in that the method passes through electric signal recorder and humiture Sensor realizes the information collection of electric energy meter field operating condition, and the data of preservation are transferred to DSP；DSP passes through to data Analysis and processing, obtain the type and weight for each influence amount exerted one's influence simultaneously to checklist, and then build scene operation Floor data library；According to the information of live operating condition database, the source output of control unit control calibration power meets electric energy meter The voltage signal and current signal of live operating condition, while Alternate hot and humid case is controlled to generate and electric energy meter field operating condition phase Same humiture environment；The pulse that error calculation unit is sent out according to the pulse port of checklist and standard scale calculates checklist and exists Composition error under this operating condition.
- 2. a kind of electric energy meter comprehensive error evaluation method according to claim 1, which is characterized in that the method specifically walks It is rapid as follows：（1）When the acquisition of electric signal recorder and saving scene operation on the voltage signal and current circuit of electrical energy meter electricity crimping road Current signal；（2）Temperature Humidity Sensor and electric signal recorder time synchronization, electric energy meter local environment is warm and humid when the scene of completion is run Degree acquisition and preservation；（3）The data of preservation are transferred to DSP by electric signal recorder and Temperature Humidity Sensor；（4）DSP builds live operating condition database by the analysis and processing to data；（5）According to the information of live operating condition database, the source output of control unit control calibration power meets electric energy meter field The voltage signal and current signal of operating condition；（6）Control unit controls Alternate hot and humid case to generate the humiture environment identical with electric energy meter field operating condition simultaneously；（7）The pulse that error calculation unit is sent out according to the pulse port of checklist and standard scale calculates checklist and runs herein Composition error under operating mode；（8）Display shows the concrete numerical value of checklist composition error.
- 3. a kind of electric energy meter comprehensive error evaluation method according to claim 1, which is characterized in that the method passes through one Kind of electric energy meter comprehensive error evaluation device realizes, the apparatus for evaluating include electric signal recorder, Temperature Humidity Sensor, DSP, Control unit, live operating condition database, error calculation unit, standard scale, display, calibration power source and Alternate hot and humid Case；Electric signal recorder and Temperature Humidity Sensor connect the input terminal of DSP respectively；The live operating condition of output terminal connection of DSP The input terminal of database；The input terminal of the output terminal connection control unit of live operating condition database；Control unit connects respectively Connect calibration power source and Alternate hot and humid case；Calibration power source connects the checklist for being placed in Alternate hot and humid case；Standard scale connects respectively Calibration power source and checklist；Standard scale and checklist connect the input terminal of error calculation unit respectively；Error calculation unit Output terminal connects display.
- A kind of 4. electric energy meter comprehensive error evaluation device according to claim 3, which is characterized in that the electricity of the standard scale Flow Line is connected with the current circuit of the checklist；The pulse port of standard scale and checklist connects with error calculation unit It connects.
- A kind of 5. electric energy meter comprehensive error evaluation device according to claim 3, which is characterized in that described control unit control Calibration power source output processed meets the voltage signal and current signal of electric energy meter field operating condition, while control Alternate hot and humid case Generate the humiture environment identical with electric energy meter field operating condition.
- A kind of 6. electric energy meter comprehensive error evaluation device according to claim 3, which is characterized in that the error calculation list The pulse that member is sent out according to the pulse port of checklist and standard scale calculates composition error of the checklist under this operating condition, and Its concrete numerical value is shown by display.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212461A (en) * | 2018-09-30 | 2019-01-15 | 中国计量大学 | A kind of intelligent electric meter acceleration cyclic damp heat test method based on preposition ultrasonic humidifying link |
| CN109342982A (en) * | 2018-07-09 | 2019-02-15 | 中国兵器工业第五九研究所 | One kind is about digital multimeter acceleration service life test method |
| CN110031792A (en) * | 2019-05-17 | 2019-07-19 | 贵州电网有限责任公司 | Consider the Basic Error of Energy Meter test device and method of temperature and curent change |
| CN110045318A (en) * | 2019-05-17 | 2019-07-23 | 贵州电网有限责任公司 | The device and method that assessment dynamic harmonic and temperature change influence electric energy meter error |
| CN110736957A (en) * | 2019-12-12 | 2020-01-31 | 国网江西省电力有限公司电力科学研究院 | Online detection system and method for electric energy metering device based on clock synchronization |
| CN111505563A (en) * | 2020-06-16 | 2020-08-07 | 国网江西省电力有限公司电力科学研究院 | Comprehensive error testing method for electric energy meter |
| CN113030838A (en) * | 2021-03-25 | 2021-06-25 | 河南省计量科学研究院 | Electric energy meter calibrating installation of online area load examination |
| CN114002639A (en) * | 2021-10-19 | 2022-02-01 | 华中科技大学 | Relative error self-monitoring system and method of electric signal acquisition circuit |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109342982A (en) * | 2018-07-09 | 2019-02-15 | 中国兵器工业第五九研究所 | One kind is about digital multimeter acceleration service life test method |
| CN109212461A (en) * | 2018-09-30 | 2019-01-15 | 中国计量大学 | A kind of intelligent electric meter acceleration cyclic damp heat test method based on preposition ultrasonic humidifying link |
| CN109212461B (en) * | 2018-09-30 | 2020-09-29 | 中国计量大学 | Intelligent electric meter acceleration alternating damp-heat test method based on preposed ultrasonic humidifying link |
| CN110031792A (en) * | 2019-05-17 | 2019-07-19 | 贵州电网有限责任公司 | Consider the Basic Error of Energy Meter test device and method of temperature and curent change |
| CN110045318A (en) * | 2019-05-17 | 2019-07-23 | 贵州电网有限责任公司 | The device and method that assessment dynamic harmonic and temperature change influence electric energy meter error |
| CN110736957A (en) * | 2019-12-12 | 2020-01-31 | 国网江西省电力有限公司电力科学研究院 | Online detection system and method for electric energy metering device based on clock synchronization |
| CN111505563A (en) * | 2020-06-16 | 2020-08-07 | 国网江西省电力有限公司电力科学研究院 | Comprehensive error testing method for electric energy meter |
| CN113030838A (en) * | 2021-03-25 | 2021-06-25 | 河南省计量科学研究院 | Electric energy meter calibrating installation of online area load examination |
| CN113030838B (en) * | 2021-03-25 | 2024-02-02 | 河南省计量科学研究院 | Electric energy meter calibrating device for on-line on-load calibration |
| CN114002639A (en) * | 2021-10-19 | 2022-02-01 | 华中科技大学 | Relative error self-monitoring system and method of electric signal acquisition circuit |
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Application publication date: 20180615 |