CN103792506A - Calibration method of AC multipath electric energy meter - Google Patents
Calibration method of AC multipath electric energy meter Download PDFInfo
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- 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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- 280000584129 Justice companies 0.000 description 1
- 281000071562 National Power companies 0.000 description 1
- 240000004678 Panax pseudoginseng Species 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000006243 chemical reactions Methods 0.000 description 1
- 235000005035 ginseng Nutrition 0.000 description 1
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Abstract
Description
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)
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)
| Publication Number | Publication Date |
|---|---|
| CN103792506A true CN103792506A (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
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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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| CN (1) | CN103792506A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| 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 |
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2012
- 2012-10-30 CN CN201210422291.4A patent/CN103792506A/en not_active Application Discontinuation
Patent Citations (6)
| 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)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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