CN108181491A - A kind of method for improving electric energy meter measuring accuracy and measuring reliability - Google Patents
A kind of method for improving electric energy meter measuring accuracy and measuring reliability Download PDFInfo
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- CN108181491A CN108181491A CN201810005833.5A CN201810005833A CN108181491A CN 108181491 A CN108181491 A CN 108181491A CN 201810005833 A CN201810005833 A CN 201810005833A CN 108181491 A CN108181491 A CN 108181491A
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- reference source
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- energy meter
- voltage reference
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
- G01R11/02—Constructional details
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- General Physics & Mathematics (AREA)
- Measurement Of Current Or Voltage (AREA)
Abstract
A kind of method for improving electric energy meter measuring accuracy and measuring reliability, electric energy meter judges the result that metering sampling is carried out using external high-precision voltage reference source and internal voltage reference source, determine whether external high-precision voltage reference source works normally, if external high-precision voltage reference source is in normal operating conditions, then electric energy meter uses external high-precision voltage reference source as computation chip a reference source, alarm condition is simultaneously closed off, the measuring accuracy of electric energy meter is higher at this time.If instead external high-precision voltage reference source is in abnormal working position, then electric energy meter is switched to internal voltage reference source as computation chip a reference source, at this time although the measuring accuracy of electric energy meter decreases, but because having carried out calibration before manufacture, so error precision is still in the range of standard regulation, it is ensured that the metering reliability of whole table.
Description
Technical field
The present invention relates to a kind of methods for improving electric energy meter measuring accuracy and measuring reliability, belong to Electric Energy Metering Technology neck
Domain.
Background technology
It is higher and higher for the stability and reliability requirement of electrical energy measurement with the development of intelligent grid.Especially one
Such as energy meterings and substation measure occasion a bit, if as the metering performance misalignment of electric energy meter, line loss can be caused exceeded or
Negative damage can all give and bring no small trouble and puzzlement for electricity consumption both sides.It is currently used in order to improve the measurement accuracy of electric energy meter
Technological means is to install high-precision voltage reference additional outside computation chip, but due to the aging of electronic device, environmental change etc.
Factor influences, and the malfunction of external high-precision voltage reference is caused even to fail, may result in the meter of ammeter in this case
Measure performance misalignment.
Invention content
The purpose of the present invention is in view of the above-mentioned problems, proposing a kind of side improved electric energy meter measuring accuracy and measure reliability
Method.Electric energy meter is designed with two sets of metered voltage a reference sources, benchmark built in external high-precision voltage reference and computation chip, electric energy meter
Switching voltage-reference is computation chip a reference source, improves the reliability of electric energy meter metering.
The technical scheme is that：
The present invention provides a kind of method for improving electric energy meter measuring accuracy and measuring reliability, and two electricity are configured for electric energy meter
Press a reference source：One of them is disposed on the voltage-reference inside computation chip, the high-precision outside another computation chip
Voltage-reference, electric energy meter as needed switch over voltage-reference.
Further, this method specifically comprises the steps of：
S1, in electric energy meter production process, calibrate for error respectively to two voltage-references, according to the result of calibration
Two sets of parameters that calibrate for error are preserved inside electric energy meter；
S2, electric energy meter initialize computation chip after working on power, and switch external high-precision voltage reference source respectively
With internal voltage reference source as computation chip a reference source, externally input voltage, current signal are sampled；
S3, the result that metering sampling is carried out using external high-precision voltage reference source and internal voltage reference source is sentenced
It is disconnected, determine whether external high-precision voltage reference source works normally, if external high-precision voltage reference source is in normal work
State, then electric energy meter, which is given tacit consent to, uses external high-precision voltage reference source as computation chip a reference source；If external high-accuracy voltage
A reference source is in abnormal operating state, then electric energy meter is switched to internal voltage reference source as computation chip a reference source, it is ensured that
The reliability of metering.
S4, electric energy meter are periodically switched to internal voltage reference source and carry out metering sampling, repeat the above steps, according to voltage
The accuracy of a reference source carries out the switching of voltage-reference.
Further, electric energy meter acquiescence uses external high-precision voltage reference source as computation chip a reference source.
Further, electric energy meter is periodically switched to internal voltage reference source and carries out metering sampling, if it is determined that external high
Precision voltage reference source is broken down, then is given tacit consent to using internal voltage reference source as computation chip a reference source.
Further, in step S3, when electric energy meter is switched to internal voltage reference source as computation chip a reference source, electric energy
Table sends alarm signal to control centre；When electric energy meter uses external high-precision voltage reference source as computation chip a reference source,
Electric energy meter closes alarm signal.
Beneficial effects of the present invention：
The electric energy meter of the present invention using external high-precision voltage reference source and internal voltage reference source to carrying out metering sampling
Result judged, determine whether external high-precision voltage reference source works normally, if external high-precision voltage reference source
In normal operating conditions, then electric energy meter uses external high-precision voltage reference source to simultaneously close off report for computation chip a reference source
Alert state, the measuring accuracy of electric energy meter is higher at this time.If instead external high-precision voltage reference source is in irregular working
State, then it is computation chip a reference source that electric energy meter, which is switched to internal voltage reference source, and at this time although the measuring accuracy of electric energy meter has
It is reduced, but because having carried out calibration before manufacture, error precision is still in the range of standard regulation, it is ensured that whole
The metering reliability of table.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Description of the drawings
Exemplary embodiment of the invention is described in more detail in conjunction with the accompanying drawings, it is of the invention above-mentioned and its
Its purpose, feature and advantage will be apparent, wherein, in exemplary embodiment of the invention, identical reference label
Typically represent same parts.
Fig. 1 shows voltage reference schematic diagram inside and outside computation chip.
Fig. 2 shows process charts.
Specific embodiment
The preferred embodiment of the present invention is more fully described below with reference to accompanying drawings.Although the present invention is shown in attached drawing
Preferred embodiment, however, it is to be appreciated that may be realized in various forms the present invention without the embodiment party that should be illustrated here
Formula is limited.
As shown in Figure 1, the metering module of electric energy meter designs two voltage-references：Computation chip built-in voltage a reference source
With external high-precision voltage reference source, electric energy meter can control the switching of a reference source inside and outside progress by software.
Electric energy meter is switched to two a reference sources and calibrates for error respectively in process of production, according to the result of calibration in electricity
Two sets of parameters that calibrate for error are preserved inside table.
In the live operational process of electric energy meter manufacture, computation chip is initialized first after power supply electrifying, is then distinguished
External high-precision voltage reference source and internal voltage reference source are switched to as computation chip a reference source, to externally input electricity
Pressure, current signal are sampled.
Electric energy meter to carried out using external high-precision voltage reference source and internal voltage reference source the result of metering sampling into
Row judges, determines whether external high-precision voltage reference source works normally, if external high-precision voltage reference source is in normal
Working condition, then electric energy meter external high-precision voltage reference source is used to simultaneously close off alarm condition for computation chip a reference source, this
When electric energy meter measuring accuracy it is higher.If instead external high-precision voltage reference source is in abnormal working position, then electric
Energy table is switched to internal voltage reference source as computation chip a reference source, and at this time although the measuring accuracy of electric energy meter decreases, but
It is because having carried out calibration before manufacture, error precision is still in the range of standard regulation, it is ensured that the metering of whole table
Reliability.
A reference source inside and outside electric energy meter periodically switching, repeats above-mentioned judgement, can not only improve measuring accuracy, but also can improve
Measure reliability.Attached drawing 2 is overall flow schematic diagram.
Various embodiments of the present invention are described above, above description is exemplary, and non-exclusive, and
It is not limited to disclosed each embodiment.In the case of without departing from the scope and spirit of illustrated each embodiment, for this skill
Many modifications and changes will be apparent from for the those of ordinary skill in art field.
Claims (6)
- A kind of 1. method for improving electric energy meter measuring accuracy and measuring reliability, it is characterised in that two voltages are configured for electric energy meter A reference source：One of them is disposed on the voltage-reference inside computation chip, the high precision electro outside another computation chip A reference source is pressed, electric energy meter as needed switches over voltage-reference.
- 2. the method according to claim 1 for improving electric energy meter measuring accuracy and measuring reliability, which is characterized in that the party Method specifically comprises the steps of：S1, in electric energy meter production process, calibrate for error respectively to two voltage-references, according to the result of calibration in electricity Two sets of parameters that calibrate for error can be preserved inside table；S2, electric energy meter initialize computation chip after working on power, and switch external high-precision voltage reference source and interior respectively Portion's voltage-reference samples externally input voltage, current signal as computation chip a reference source；S3, the result that metering sampling is carried out using external high-precision voltage reference source and internal voltage reference source is judged, Determine whether external high-precision voltage reference source works normally, if external high-precision voltage reference source is in normal work shape State, then electric energy meter use external high-precision voltage reference source as computation chip a reference source；If external high-precision voltage reference source In abnormal operating state, then it is computation chip a reference source that electric energy meter, which is switched to internal voltage reference source, it is ensured that metering Reliability.
- 3. a kind of method for improving electric energy meter measuring accuracy and measuring reliability according to claim 1, it is characterised in that： Electric energy meter acquiescence uses external high-precision voltage reference source as computation chip a reference source.
- 4. a kind of method for improving electric energy meter measuring accuracy and measuring reliability according to claim 1, it is characterised in that： Electric energy meter is periodically switched to internal voltage reference source and carries out metering sampling, if it is determined that external high-precision voltage reference source occurs Failure is then given tacit consent to using internal voltage reference source as computation chip a reference source.
- 5. a kind of method for improving electric energy meter measuring accuracy and measuring reliability according to claim 1, it is characterised in that： In step S3, when electric energy meter is switched to internal voltage reference source as computation chip a reference source, electric energy meter sends alarm signal extremely Control centre.
- 6. a kind of method for improving electric energy meter measuring accuracy and measuring reliability according to claim 1, it is characterised in that： In step S3, when electric energy meter uses external high-precision voltage reference source as computation chip a reference source, electric energy meter closes alarm signal Number.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810005833.5A CN108181491A (en) | 2018-01-03 | 2018-01-03 | A kind of method for improving electric energy meter measuring accuracy and measuring reliability |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810005833.5A CN108181491A (en) | 2018-01-03 | 2018-01-03 | A kind of method for improving electric energy meter measuring accuracy and measuring reliability |
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| CN108181491A true CN108181491A (en) | 2018-06-19 |
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| CN201810005833.5A Pending CN108181491A (en) | 2018-01-03 | 2018-01-03 | A kind of method for improving electric energy meter measuring accuracy and measuring reliability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308188A (en) * | 2020-03-31 | 2020-06-19 | 湖南省计量检测研究院 | High-precision direct-current electric energy meter metering device and method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1604325A (en) * | 2004-11-03 | 2005-04-06 | 北京中星微电子有限公司 | Chip with a plurality of internal functional blocks and method for power supply and noise reduction |
| CN102662107A (en) * | 2012-05-18 | 2012-09-12 | 威胜集团有限公司 | Micro control unit (MCU) built-in reference temperature compensation method based on system on chip (SOC) electric meter |
| CN104020693A (en) * | 2014-06-16 | 2014-09-03 | 徐云鹏 | Real-time data collecting system for handheld device |
| CN104635830A (en) * | 2015-02-06 | 2015-05-20 | 国家电网公司 | Voltage signal conditioning circuit based on controllable precise voltage regulator |
| CN105353817A (en) * | 2015-11-03 | 2016-02-24 | 南京天易合芯电子有限公司 | Low-noise reference circuit applicable to high-precision analog-to-digital converter (ADC) |
| CN106301608A (en) * | 2016-08-15 | 2017-01-04 | 南京熊猫电子股份有限公司 | A kind of ultrashort wave Transmit-Receive Unit Universal debugging fitting device |
-
2018
- 2018-01-03 CN CN201810005833.5A patent/CN108181491A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1604325A (en) * | 2004-11-03 | 2005-04-06 | 北京中星微电子有限公司 | Chip with a plurality of internal functional blocks and method for power supply and noise reduction |
| CN102662107A (en) * | 2012-05-18 | 2012-09-12 | 威胜集团有限公司 | Micro control unit (MCU) built-in reference temperature compensation method based on system on chip (SOC) electric meter |
| CN104020693A (en) * | 2014-06-16 | 2014-09-03 | 徐云鹏 | Real-time data collecting system for handheld device |
| CN104635830A (en) * | 2015-02-06 | 2015-05-20 | 国家电网公司 | Voltage signal conditioning circuit based on controllable precise voltage regulator |
| CN105353817A (en) * | 2015-11-03 | 2016-02-24 | 南京天易合芯电子有限公司 | Low-noise reference circuit applicable to high-precision analog-to-digital converter (ADC) |
| CN106301608A (en) * | 2016-08-15 | 2017-01-04 | 南京熊猫电子股份有限公司 | A kind of ultrashort wave Transmit-Receive Unit Universal debugging fitting device |
Non-Patent Citations (1)
| Title |
|---|
| P.K.拉拉著，孟永炎等译: "《容错与故障可测性***设计》", 31 March 1989, 中国铁道出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111308188A (en) * | 2020-03-31 | 2020-06-19 | 湖南省计量检测研究院 | High-precision direct-current electric energy meter metering device and method |
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Application publication date: 20180619 |