CN102944865A - Method and system for automatic calibration of single-phase meter - Google Patents

Method and system for automatic calibration of single-phase meter Download PDF

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Publication number
CN102944865A
CN102944865A CN2012104845614A CN201210484561A CN102944865A CN 102944865 A CN102944865 A CN 102944865A CN 2012104845614 A CN2012104845614 A CN 2012104845614A CN 201210484561 A CN201210484561 A CN 201210484561A CN 102944865 A CN102944865 A CN 102944865A
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CN
China
Prior art keywords
phase meter
chip microcomputer
adjustment
auto
phase
Prior art date
Application number
CN2012104845614A
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Chinese (zh)
Inventor
覃洋
汪俊
袁磊
Original Assignee
深圳市航天泰瑞捷电子有限公司
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Application filed by 深圳市航天泰瑞捷电子有限公司 filed Critical 深圳市航天泰瑞捷电子有限公司
Priority to CN2012104845614A priority Critical patent/CN102944865A/en
Publication of CN102944865A publication Critical patent/CN102944865A/en

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Abstract

The invention discloses a method for automatic calibration of a single-phase meter. The method comprises that a voltage-stabilized source applies standard voltage and standard current to the single-phase meter; a single chip microcomputer sends out a meter calibration signal to the single-phase meter; the single chip microcomputer obtains sampling values of the single-phase meter; and the single chip microcomputer calibrates the single-phase meter according to sampling values. The invention also discloses a system for automatic calibration of the single-phase meter. By the aid of the method and the system for automatic calibration of the single-phase meter, the standard voltage and the standard current are provided, so that the single-phase meter can be calibrated automatically, conveniently and quickly.

Description

Single-phase meter auto-adjustment method and system

Technical field

The present invention relates to single-phase meter, relate in particular to a kind of single-phase meter auto-adjustment method and system.

Background technology

Existing electric energy meter calibration operation great majority comprise the equipment of calibration needs based on certain hardware resource and parameter information, and the connection, the communication that reach between each equipment are set up; The parameter information of table itself etc.Lack at goods and materials so, be pressed for time, especially in the situation such as product onsite troubleshooting, complicated operation inconvenience affects the progress of work.

Therefore, how conveniently proofreading and correct single-phase meter, is technical issues that need to address.

Summary of the invention

In view of this, the embodiment of the invention provides a kind of single-phase meter auto-adjustment method and system.

For addressing the above problem, the technical scheme that the embodiment of the invention provides is as follows:

The invention provides a kind of single-phase meter auto-adjustment method, may further comprise the steps: stabilized voltage supply adds standard voltage and normalized current to single-phase meter; Single-chip microcomputer sends the calibration signal to described single-phase meter; Described single-chip microcomputer obtains the sampling numerical value of described single-phase meter; Described single-chip microcomputer is proofreaied and correct described single-phase meter according to described sampling numerical value.

The present invention also provides a kind of single-phase meter auto-adjustment system, comprising: stabilized voltage supply, be connected to single-phase meter, and be used to single-phase meter that stable voltage and electric current is provided; Single-chip microcomputer is connected to described single-phase meter, is used for obtaining the sampling numerical value of described single-phase meter, provides the calibration signal to single-phase meter, according to the described single-phase meter of described sampling data calibration

Can find out that single-phase meter auto-adjustment method and system of the present invention by normal voltage and normalized current are provided, just can be finished the automatic calibration of single-phase meter, does not need to adjust phase angle and the amplitude of normal voltage and electric current, and is convenient and swift.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use among the embodiment, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the process flow diagram of single-phase meter auto-adjustment method of the present invention.

Fig. 2 is the module map of single-phase meter auto-adjustment of the present invention system.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is carried out clear, complete description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Be illustrated in figure 1 as the process flow diagram of single-phase meter auto-adjustment method.

Step S100,10 pairs of single-phase meters 20 of stabilized voltage supply add standard voltage and normalized current, and power factor is 0.5.Wherein, 10 pairs of single-phase meters 20 of described stabilized voltage supply time of adding standard voltage and normalized current is not less than 5 seconds.

Step S101,30 pairs of described single-phase meters 20 of single-chip microcomputer send the calibration signal.

Step S102, described single-chip microcomputer 30 obtains the sampling numerical value of described single-phase meter 20.

Step S103, described single-chip microcomputer 30 is proofreaied and correct described single-phase meter 20 according to described sampling numerical value.Be specially: described single-chip microcomputer 30 calculates angle measurement θ according to measured value meritorious, idle register, compares with the standard angle value, obtains deviate; By calculating the gain of angular difference register, described deviate is write the angular difference register; Described single-chip microcomputer 30 compares meritorious measured value respectively with standard active power value, obtain deviate; Calculate the gain of power register, with described deviate Writing power register.

When finishing, each step can verify by the reference standard table, undesirable such as error range, can repeatedly proofread and correct.Single-phase meter 20 for different chip models carries out repetition test, determines the suitable debounce time, makes every effort to the calibration process quick and precisely.

Be illustrated in figure 2 as the module map of single-phase meter auto-adjustment system.This single-phase meter auto-adjustment system comprises stabilized voltage supply 10 and single-chip microcomputer 30.

Stabilized voltage supply 10 is connected to single-phase meter 20, is used to single-phase meter 20 that stable voltage and electric current is provided;

Single-chip microcomputer 30 is connected to described single-phase meter 20, is used for obtaining the sampling numerical value of described single-phase meter 20, provides the calibration signal to single-phase meter 20, according to the described single-phase meter 20 of described sampling data calibration.Described single-chip microcomputer 30 provides the calibration signal by shorting stub or wireless signal for described single-phase meter 20.

In the present embodiment, also comprise the power factor register, be used for raw value and the current sampled value of correlation energy register are carried out debounce processing.

Computation chip take model as ATT7022BU is example, wherein, and the value of the meritorious register of DataP acute pyogenic infection of finger tip, DataQ represents the value of idle register, PhSregpq represents the value of angular difference register, the meritorious performance number of P representative, the performance number that the Q representative is idle: P=DataP*3200/ (EC*2 8), Q=DataQ*3200/ (EC*2 8)

Angular difference corrected value θ=(Preal*Q-P*Qreal)/(P*Preal+Q*Qreal)

If θ>=0, PhSregpq=INT[θ * 2 23]

Otherwise θ<=0, PhSregpq=INT[2 24+ θ * 2 23]

Performance number behind the correction angular difference: P '=P+Q θ

Power gain corrected value: Pgain=Preal/P '-1

If Pgain>=0, then Pgain=INT[Pgain*2 23]

Otherwise Pgain<0, then Pgain=INT[2 24+ Pgain*2 23]

At last, corresponding corrected value is write register, finish correction.

Single-phase meter auto-adjustment method and system provided by the present invention by normal voltage and normalized current are provided, just can be finished the automatic calibration of single-phase meter, and is convenient and swift.

The professional can also further should be able to recognize, unit and the algorithm steps of each example of describing in conjunction with embodiment disclosed herein, can realize with electronic hardware, computer software or the combination of the two, for the interchangeability of hardware and software clearly is described, composition and the step of each example described in general manner according to function in the above description.These functions are carried out with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.The professional and technical personnel can specifically should be used for realizing described function with distinct methods to each, but this realization should not thought the scope that exceeds the embodiment of the invention.

The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.

To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the embodiment of the invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation of the spirit or scope that do not break away from the embodiment of the invention, realize in other embodiments.Therefore, the embodiment of the invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.

It below only is the preferred embodiment of the embodiment of the invention; not in order to limit the embodiment of the invention; all within the spirit and principle of the embodiment of the invention, any modification of doing, be equal to replacement, improvement etc., all should be included within the protection domain of the embodiment of the invention.

Claims (7)

1. a single-phase meter auto-adjustment method is characterized in that, may further comprise the steps:
Stabilized voltage supply adds standard voltage and normalized current to single-phase meter;
Single-chip microcomputer sends the calibration signal to described single-phase meter;
Described single-chip microcomputer obtains the sampling numerical value of described single-phase meter;
Described single-chip microcomputer is proofreaied and correct described single-phase meter according to described sampling numerical value.
2. single-phase meter auto-adjustment method according to claim 1, it is characterized in that: described stabilized voltage supply is not less than 5 seconds to the time that single-phase meter adds standard voltage and normalized current.
3. single-phase meter auto-adjustment method according to claim 1 is characterized in that, described single-chip microcomputer is proofreaied and correct described single-phase meter according to described sampling numerical value and comprised:
Described single-chip microcomputer will be gained merit, measured value idle, the angular difference register compares with normal voltage, normalized current, standard angle value respectively, obtain deviate;
Calculate each register gain, described deviate is write corresponding register.
4. single-phase meter auto-adjustment method according to claim 1, it is characterized in that: described stabilized voltage supply adds in standard voltage and this step of normalized current single-phase meter, and power factor is 0.5.
5. a single-phase meter auto-adjustment system is characterized in that, comprising:
Stabilized voltage supply is connected to single-phase meter, is used to single-phase meter that stable voltage and electric current is provided;
Single-chip microcomputer is connected to described single-phase meter, is used for obtaining the sampling numerical value of described single-phase meter, provides the calibration signal to single-phase meter, according to the described single-phase meter of described sampling data calibration.
6. single-phase meter auto-adjustment according to claim 5 system, it is characterized in that: described single-chip microcomputer provides the calibration signal by shorting stub or wireless signal for described single-phase meter.
7. single-phase meter auto-adjustment according to claim 5 system is characterized in that: also comprise the power factor register, be used for raw value and the current sampled value of correlation energy register are carried out debounce processing.
CN2012104845614A 2012-11-23 2012-11-23 Method and system for automatic calibration of single-phase meter CN102944865A (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103439683A (en) * 2013-07-16 2013-12-11 深圳市航天泰瑞捷电子有限公司 Method for intelligently managing production of electric meters
CN103487782A (en) * 2013-07-16 2014-01-01 深圳市航天泰瑞捷电子有限公司 Electric meter calibrating method and automatic calibrating system
CN104297717A (en) * 2014-11-03 2015-01-21 青岛世泽电子仪表有限公司 Electric energy meter correction method and system and electric energy meter
CN105068040A (en) * 2015-09-11 2015-11-18 珠海格力电器股份有限公司 Electric energy metering device and household electrical appliance using same
CN105388445A (en) * 2015-10-21 2016-03-09 宁波三星医疗电气股份有限公司 Automatic meter calibration method for single-phase electric energy meter
CN106154208A (en) * 2016-07-22 2016-11-23 溧阳市华鹏电力仪表有限公司 The quick self-calibration system of a kind of guide tracked single-phase electric energy Watch Error and method for self-calibrating
CN106405460A (en) * 2016-07-06 2017-02-15 广州维思车用部件有限公司 Electronic instrument voltage detection calibration system and calibration method
CN106569167A (en) * 2016-10-17 2017-04-19 中国电力科学研究院 Electric energy meter error automatic checking method and electric energy meter
CN109683123A (en) * 2019-03-08 2019-04-26 广东电网有限责任公司 A kind of single-phase normal power electric energy meter with self calibration diagnostic function

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Publication number Priority date Publication date Assignee Title
US4766370A (en) * 1984-04-12 1988-08-23 The Eastern Specialty Company System and method for calibrating an energy meter
CN1435697A (en) * 2002-01-30 2003-08-13 湖南省电力试验研究所 Fictitious load source for in-situ checking electric energy meter
KR20090070630A (en) * 2007-12-27 2009-07-01 재단법인 한국기기유화시험연구원 Test apparatus for watt-hour meter
CN101806878A (en) * 2010-04-08 2010-08-18 南京新联电子股份有限公司 Single-station indicator and indicating and testing method thereof
CN101915903A (en) * 2010-09-08 2010-12-15 珠海中慧微电子有限公司 Power meter calibrating system and power meter calibrating method for intelligent electric meter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4766370A (en) * 1984-04-12 1988-08-23 The Eastern Specialty Company System and method for calibrating an energy meter
CN1435697A (en) * 2002-01-30 2003-08-13 湖南省电力试验研究所 Fictitious load source for in-situ checking electric energy meter
KR20090070630A (en) * 2007-12-27 2009-07-01 재단법인 한국기기유화시험연구원 Test apparatus for watt-hour meter
CN101806878A (en) * 2010-04-08 2010-08-18 南京新联电子股份有限公司 Single-station indicator and indicating and testing method thereof
CN101915903A (en) * 2010-09-08 2010-12-15 珠海中慧微电子有限公司 Power meter calibrating system and power meter calibrating method for intelligent electric meter

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103439683A (en) * 2013-07-16 2013-12-11 深圳市航天泰瑞捷电子有限公司 Method for intelligently managing production of electric meters
CN103487782A (en) * 2013-07-16 2014-01-01 深圳市航天泰瑞捷电子有限公司 Electric meter calibrating method and automatic calibrating system
CN103487782B (en) * 2013-07-16 2017-02-08 深圳市航天泰瑞捷电子有限公司 Electric meter calibrating method and automatic calibrating system
CN104297717A (en) * 2014-11-03 2015-01-21 青岛世泽电子仪表有限公司 Electric energy meter correction method and system and electric energy meter
CN105068040A (en) * 2015-09-11 2015-11-18 珠海格力电器股份有限公司 Electric energy metering device and household electrical appliance using same
CN105388445A (en) * 2015-10-21 2016-03-09 宁波三星医疗电气股份有限公司 Automatic meter calibration method for single-phase electric energy meter
CN105388445B (en) * 2015-10-21 2018-05-15 宁波三星医疗电气股份有限公司 A kind of auto-adjustment method of single-phase electric energy meter
CN106405460A (en) * 2016-07-06 2017-02-15 广州维思车用部件有限公司 Electronic instrument voltage detection calibration system and calibration method
CN106154208A (en) * 2016-07-22 2016-11-23 溧阳市华鹏电力仪表有限公司 The quick self-calibration system of a kind of guide tracked single-phase electric energy Watch Error and method for self-calibrating
CN106569167A (en) * 2016-10-17 2017-04-19 中国电力科学研究院 Electric energy meter error automatic checking method and electric energy meter
CN109683123A (en) * 2019-03-08 2019-04-26 广东电网有限责任公司 A kind of single-phase normal power electric energy meter with self calibration diagnostic function

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