CN103792506A - Calibration method of AC multipath electric energy meter - Google Patents

Calibration method of AC multipath electric energy meter Download PDF

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Publication number
CN103792506A
CN103792506A CN201210422291.4A CN201210422291A CN103792506A CN 103792506 A CN103792506 A CN 103792506A CN 201210422291 A CN201210422291 A CN 201210422291A CN 103792506 A CN103792506 A CN 103792506A
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CN
China
Prior art keywords
calibration
channel
electric energy
instruction
meter
Prior art date
Application number
CN201210422291.4A
Other languages
Chinese (zh)
Inventor
顾凤玉
Original Assignee
苏州工业园区新宏博通讯科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 苏州工业园区新宏博通讯科技有限公司 filed Critical 苏州工业园区新宏博通讯科技有限公司
Priority to CN201210422291.4A priority Critical patent/CN103792506A/en
Publication of CN103792506A publication Critical patent/CN103792506A/en

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Abstract

The present invention provides a calibration method of an AC multipath electric energy meter. The method comprises the steps of providing a standard rated voltage and a rated current via a standard calibration table, and inputting the standard rated voltage and the rated current to an AC electric energy meter for sampling; using the standard calibration table to backward read an electric energy pulse outputted by the AC electric energy meter actually, comparing the electric energy pulse with a pulse metered by a standard meter, and using the calibration table to calculate an absolute error value of the actual electric energy and the standard electric energy; using an upper computer calibrating software to configure the absolute error value to a corresponding metering chip on the AC electric energy meter, and reducing the absolute error value to satisfy an electric meter grade requirement. Compared with the prior art, each calibrated meter is equipped with a plurality of sub-cards, and the sub-cards correspond to different channel numbers respectively, and only receive the instructions matching the own channel numbers. Each sub-card must receive a calibration starting command firstly before responding to a calibration instruction matching a channel of the sub-card and a meter parameter reading instruction, then opens a calibration permission symbol of the corresponding channel, after receiving a calibration ending command, closes the calibration permission symbol of the corresponding channel, thereby reducing the error probability of calibrating data effectively.

Description

Exchange the method for calibration of multiple way electric table

Technical field

The present invention relates to the technical field of electrical energy meter calibration, relate in particular to a kind of method of calibration that exchanges multiple way electric table.

Background technology

Along with national power consumption continues to rise, the usage quantity of AC energy meter (or being called watt-hour meter) increases greatly, exchanges multichannel ammeter and is more and more extensively adopted by large-scale electricity consumption place.Electric energy metrical is not only the focus of social extensive concern, and becomes enterprise and carry out one of " energy-saving and emission-reduction " focus.Exchange the metering curve that multiple way electric table more can embody business electrical amount the most intuitively, in the work of " energy-saving and emission-reduction " of enterprise, play a part very important, therefore the justice to the work of interchange multiple way electric table measurement and calibration, just, accurate, reliable, is directly connected to the interests of powering with electricity consumption both sides.

General calibration process, comprises three steps, provides standard rated voltage and rated current by standard correction platform, inputs to AC energy meter sampling; The electrical energy pulse of the actual output of standard correction platform retaking of a year or grade AC energy meter, and compare with the pulse of standard scale metering, calculated the absolute error value of actual power and standard electric energy by correction platform; By host computer calibration software, absolute error value is configured in computation chip corresponding in AC energy meter, absolute error value is reduced to and meets grade of meter requirement.

The previous interchange multichannel of order ammeter can be measured at most 24 independently three-phase alternating current loops simultaneously, and each measuring circuit needs to calibrate respectively, exchanges multiple way electric meter accuracy class requirement to meet.Multiple loops are measured simultaneously, can be because measure confusion reigned simultaneously.

Therefore be necessary to provide a kind of method of calibration that exchanges easily multiple way electric table.

Summary of the invention

The present invention relates to a kind of method of calibration that exchanges multiple way electric table.

To achieve the above object of the invention, the invention provides the method for calibration that exchanges multiple way electric table, comprise the following steps:

The channel number that host computer calibration software exchanges multiple way electric table according to calibration configures different table addresses;

Select to need the corresponding channel number of table of calibration;

Send calibration initiation command;

Carry out the verification of each calibration point;

When complete calibration the finish commands that sends of verification a little all;

Exit the calibration operation of current selected table;

Select the corresponding channel number of table of next calibration.

As a further improvement on the present invention, further comprising the steps of:

Exchange multiple way electric table and receive by RS485 the calibration instruction that host computer issues;

Judge screens and the measurement channel number of current correction card place subcard according to table address described in calibration instruction;

Pass through I 2c bus is by measurement channel number, calibration instruction and read calibration parameter instruction and be handed down to the subcard matching with calibration instruction;

Subcard is received the rear metering module of selecting current calibration according to measurement channel number, and the calibration of opening respective channel allows mark;

Carry out again calibration instruction and meter reading parameter instruction, the register parameters of calibration is again saved in nonvolatile memory simultaneously;

Receive calibration the finish command, the calibration of closing respective channel allows mark.

Compared with prior art, the method of calibration of interchange multiple way electric table provided by the present invention, and each subcard is the different channel number of correspondence respectively, each subcard only receives the instruction matching with self channel number, before calibration instruction and meter reading parameter instruction that subcard matches at response and its passage, must first receive calibration initiation command, the calibration of opening respective channel allows mark, when receiving after calibration the finish command, the calibration of closing respective channel allows mark, and this has reduced the probability that calibration data are made mistakes effectively.

Accompanying drawing explanation

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

Fig. 1 is the host computer calibration software basic flow sheet of one embodiment of the invention;

Fig. 2 is that one embodiment of the invention exchanges multiple way electric table calibration software basic flow sheet.

Embodiment

Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiment do not limit the present invention, the conversion in structure, method or function that those of ordinary skill in the art makes according to these embodiment is all included in protection scope of the present invention.

Shown in ginseng Fig. 1 and Fig. 2, the method for calibration of interchange multiple way electric table provided by the present invention, comprises the following steps,

S110, the channel number that host computer calibration software exchanges multiple way electric table according to calibration configures different table addresses;

S120, selects the corresponding channel number of table that need to calibrate;

S130, sends calibration initiation command;

S140, carries out the verification of each calibration point;

S150, when complete calibration the finish commands that sends of verification a little all;

S160, exits the calibration operation of current selected table;

S170, selects the next corresponding channel number of table of calibrating.

Concrete, further comprising the steps of:

S210, exchanges multiple way electric table and receives by RS485 the calibration instruction that host computer issues;

S220, judges screens and the measurement channel number of current correction card place subcard according to table address described in calibration instruction;

S230, passes through I 2c bus is by measurement channel number, calibration instruction and read calibration parameter instruction and be handed down to the subcard matching with calibration instruction;

S240, subcard is received the rear metering module of selecting current calibration according to measurement channel number, the calibration of opening respective channel allows mark;

S250, then carry out calibration instruction and meter reading parameter instruction is saved in the register parameters of calibration again in nonvolatile memory simultaneously;

S260, receives calibration the finish command, and the calibration of closing respective channel allows mark.

The method of calibration of interchange multiple way electric table provided by the present invention, each subcard is the different channel number of correspondence respectively, each subcard only receives the instruction matching with self channel number, before calibration instruction and meter reading parameter instruction that subcard matches at response and its passage, must first receive calibration initiation command, the calibration of opening respective channel allows mark, when receiving after calibration the finish command, the calibration of closing respective channel allows mark, and this has reduced the probability that calibration data are made mistakes effectively.

Be to be understood that, although this instructions is described according to embodiment, but be not that each embodiment only comprises an independently technical scheme, this narrating mode of instructions is only for clarity sake, those skilled in the art should make instructions as a whole, technical scheme in each embodiment also can, through appropriately combined, form other embodiments that it will be appreciated by those skilled in the art that.

Listed a series of detailed description is above only illustrating for feasibility embodiment of the present invention; they are not in order to limit the scope of the invention, all do not depart from the equivalent embodiment that skill spirit of the present invention does or change and all should be included in protection scope of the present invention within.

Claims (2)

1. a method of calibration that exchanges multiple way electric table, comprises the following steps:
The channel number that host computer calibration software exchanges multiple way electric table according to calibration configures different table addresses;
Select to need the corresponding channel number of table of calibration;
Send calibration initiation command;
Carry out the verification of each calibration point;
When complete calibration the finish commands that sends of verification a little all;
Exit the calibration operation of current selected table;
Select the corresponding channel number of table of next calibration.
2. the method for calibration that exchanges as claimed in claim 1 multiple way electric table, is characterized in that, further comprising the steps of:
Exchange multiple way electric table and receive by RS485 the calibration instruction that host computer issues;
Judge screens and the measurement channel number of current correction card place subcard according to table address described in calibration instruction;
Pass through I 2c bus is by measurement channel number, calibration instruction and read calibration parameter instruction and be handed down to the subcard matching with calibration instruction;
Subcard is received the rear metering module of selecting current calibration according to measurement channel number, and the calibration of opening respective channel allows mark;
Carry out again calibration instruction and meter reading parameter instruction, the register parameters of calibration is again saved in nonvolatile memory simultaneously;
Receive calibration the finish command, the calibration of closing respective channel allows mark.
CN201210422291.4A 2012-10-30 2012-10-30 Calibration method of AC multipath electric energy meter CN103792506A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210422291.4A CN103792506A (en) 2012-10-30 2012-10-30 Calibration method of AC multipath electric energy meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210422291.4A CN103792506A (en) 2012-10-30 2012-10-30 Calibration method of AC multipath electric energy meter

Publications (1)

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CN103792506A true CN103792506A (en) 2014-05-14

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CN201210422291.4A CN103792506A (en) 2012-10-30 2012-10-30 Calibration method of AC multipath electric energy meter

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107422292A (en) * 2017-04-10 2017-12-01 华立科技股份有限公司 Correction method for intelligent electric meter
CN107479020A (en) * 2017-07-24 2017-12-15 杭州华罡智能科技有限公司 Single-phase measurement Fault Identification device and processing method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6633825B2 (en) * 2001-06-29 2003-10-14 Siemens Power Transmission & Distribution, Inc. Automatic calibration of time keeping for utility meters
CN101140320A (en) * 2006-09-07 2008-03-12 深圳市科陆电子科技股份有限公司 Electrical energy meter calibration stand and checking method thereof
CN101876693A (en) * 2010-06-09 2010-11-03 合肥工业大学 Electric energy metering chip-based terminal calibration system
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
CN102520385A (en) * 2011-12-12 2012-06-27 宁夏隆基宁光仪表有限公司 Automatic error calibration method for single-phase electrical energy meter
CN102590784A (en) * 2012-03-14 2012-07-18 沈阳时尚实业有限公司 Single-phase intelligent energy meter distributed correction method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6633825B2 (en) * 2001-06-29 2003-10-14 Siemens Power Transmission & Distribution, Inc. Automatic calibration of time keeping for utility meters
CN101140320A (en) * 2006-09-07 2008-03-12 深圳市科陆电子科技股份有限公司 Electrical energy meter calibration stand and checking method thereof
CN101876693A (en) * 2010-06-09 2010-11-03 合肥工业大学 Electric energy metering chip-based terminal calibration system
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
CN102520385A (en) * 2011-12-12 2012-06-27 宁夏隆基宁光仪表有限公司 Automatic error calibration method for single-phase electrical energy meter
CN102590784A (en) * 2012-03-14 2012-07-18 沈阳时尚实业有限公司 Single-phase intelligent energy meter distributed correction method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107422292A (en) * 2017-04-10 2017-12-01 华立科技股份有限公司 Correction method for intelligent electric meter
CN107479020A (en) * 2017-07-24 2017-12-15 杭州华罡智能科技有限公司 Single-phase measurement Fault Identification device and processing method

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Application publication date: 20140514

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