CN104793172A - Temperature segmentation calibrating and metering method of power metering device - Google Patents
Temperature segmentation calibrating and metering method of power metering device Download PDFInfo
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- CN104793172A CN104793172A CN201510220506.8A CN201510220506A CN104793172A CN 104793172 A CN104793172 A CN 104793172A CN 201510220506 A CN201510220506 A CN 201510220506A CN 104793172 A CN104793172 A CN 104793172A
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Abstract
The invention discloses a temperature segmentation calibrating and metering method of a power metering device. The method includes utilizing a standard meter and a power metering device to output the set voltage and set metered current, set metered power and set phase respectively at maximum temperature and minimum temperature, acquiring the voltage errors, current errors, power errors and phase errors on the conditions of maximum temperature and minimum temperature, and correcting the measured voltage, current, power and phase by selecting different errors according to different temperature segments. By the aid of the method, the requirements on element temperature property by the power metering device can be lowered, the metering accuracy of the power metering device in a wide temperature range is improved significantly, and the adaptability of the power metering device in different regions and seasons can be improved.
Description
Technical field
The present invention relates to electric energy metrical field, be specifically related to the calibration of electric power meter in wide temperature range and metering method.
Background technology
Electric power meter, all have passed through calibration before dispatching from the factory, and how to make is the common objective of this industry of electric energy metrical in different geographic position and the requirement that can meet measuring accuracy season with a equipment.
Existing electric power meter, is all at room temperature carry out primary calibration, then error correction values is stored in electric power meter.When the actual work temperature condition of device changes, such as: with a equipment summer and winter or with a equipment in southern province and the Northeast, measuring accuracy can reduce the scope even exceeding industry and specify to allow.For addressing this problem, being substantially all adopt the good components and parts of temperature performance, to reduce the impact of temperature on measuring accuracy, thus reaching industry standard permissible accuracy.
Summary of the invention
The object of the present invention is to provide a kind of new electric power meter to calibrate and metering method, make electric power meter all have very high measuring accuracy in wide temperature range.
For achieving the above object, following technical scheme is adopted:
The temperature section calibration of electric power meter and a metering method, comprise the following steps 1: by tested electricity
Measuring apparatus can be positioned over the ceiling temperature environment preset,
Utilize standard source to export setting voltage respectively, set tested electric current, set measured power and setting phase place, standard scale and tested electric power meter are measured the setting voltage exported, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 1, I
setting 1, P
setting 1,
tested electric power meter is utilized to measure voltage U
measure 1, I
measure 1, P
measure 1,
Calculate tested electric power meter voltage error ε at the ceiling temperature
u1, current error ε
i1, power error ε
p1, phase error
ε
u1=((U
measure 1÷ U
setting 1)-1) × 100%;
ε
i1=((I
measure 1÷ I
setting 1)-1) × 100%;
ε
p1=((P
measure 1÷ P
setting 1)-1) × 100%;
Step 2: tested electric power meter is positioned over high-low temperature test chamber, is set as the lower limit temperature preset by the temperature in high-low temperature test chamber,
Utilize standard source to export setting voltage, setting electric current, setting power and setting phase place respectively, standard scale and tested electric power meter are measured setting voltage, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 2, I
setting 2, P
setting 2,
tested electric power meter is utilized to measure voltage U
measure 2, I
measure 2, P
measure 2,
Calculate the voltage error ε of tested electric power meter under lower limit temperature
u2, current error ε
i2, power error ε
p2, phase error
p2,
ε
u2=((U
measure 2÷ U
setting 2)-1) × 100%;
ε
i2=((I
measure 2÷ I
setting 2)-1) × 100%;
ε
p2=((P
measure 2÷ P
setting 2)-1) × 100%;
Step 3: tested electric power meter obtains operating ambient temperature during actual motion,
If actual working environment temperature is less than or equal to lower limit temperature, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u2, current correction error ε
ifor ε
i2, capability correction error ε
pfor ε
p2, phase correction error
for
If actual working environment temperature is greater than or equal to ceiling temperature, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u1, current correction error ε
ifor ε
i1, capability correction error ε
pfor ε
p1, phase correction error
for
If actual working environment temperature is lower than ceiling temperature and higher than lower limit temperature, then gone out by following formulae discovery, get the voltage correction error ε that actual working environment temperature is corresponding
u, current correction error ε
i, capability correction error ε
p, phase correction error
ε
u=ε
u1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
u2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
ε
i=ε
i1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
i2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
ε
p=ε
p1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
p2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
Step 4, the voltage correction error ε corresponding according to actual working environment temperature
u, current correction error ε
i, capability correction error ε
p, phase correction error
the correction of the voltage that under carrying out actual working environment temperature, tested electric power meter is measured, electric current, power and phase place.
The monitor the working environment change of temperature of tested electric power meter has exceeded the temperature threshold values T preset, then repeat step 3 and step 4.
Adopt calibration steps of the present invention, the requirement of electric power meter to components and parts temperature performance can be reduced, significantly improve the measuring accuracy of electric power meter in wide temperature range, strengthen the adaptive faculty of electric power meter in different geographical, Various Seasonal.
Accompanying drawing explanation
Fig. 1 is the calibration of traditional electric power meter and measurement flow.
Fig. 2 is electric power meter of the present invention calibration and measurement flow.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
Embodiment 1
The temperature section calibration of electric power meter and a metering method, comprise the following steps 1: by tested electricity
Measuring apparatus can be positioned over the ceiling temperature environment preset,
Utilize standard source to export setting voltage respectively, set tested electric current, set measured power and setting phase place, standard scale and tested electric power meter are measured the setting voltage exported, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 1, I
setting 1, P
setting 1,
tested electric power meter is utilized to measure voltage U
measure 1, I
measure 1, P
measure 1,
Calculate tested electric power meter voltage error ε at the ceiling temperature
u1, current error ε
i1, power error ε
p1, phase error
ε
u1=((U
measure 1÷ U
setting 1)-1) × 100%;
ε
i1=((I
measure 1÷ I
setting 1)-1) × 100%;
ε
p1=((P
measure 1÷ P
setting 1)-1) × 100%;
Step 2: tested electric power meter is positioned over high-low temperature test chamber, is set as the lower limit temperature preset by the temperature in high-low temperature test chamber,
Utilize standard source to export setting voltage, setting electric current, setting power and setting phase place respectively, standard scale and tested electric power meter are measured setting voltage, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 2, I
setting 2, P
setting 2,
tested electric power meter is utilized to measure voltage U
measure 2, I
measure 2, P
measure 2,
Calculate the voltage error ε of tested electric power meter under lower limit temperature
u2, current error ε
i2, power error ε
p2, phase error
p2,
ε
u2=((U
measure 2÷ U
setting 2)-1) × 100%;
ε
i2=((I
measure 2÷ I
setting 2)-1) × 100%;
ε
p2=((P
measure 2÷ P
setting 2)-1) × 100%;
Step 3: tested electric power meter obtains operating ambient temperature during actual motion,
If actual working environment temperature is less than or equal to lower limit temperature, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u2, current correction error ε
ifor ε
i2, capability correction error ε
pfor ε
p2, phase correction error
for
If actual working environment temperature is greater than or equal to ceiling temperature, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u1, current correction error ε
ifor ε
i1, capability correction error ε
pfor ε
p1, phase correction error
for
If actual working environment temperature is lower than ceiling temperature and higher than lower limit temperature, then gone out by following formulae discovery, get the voltage correction error ε that actual working environment temperature is corresponding
u, current correction error ε
i, capability correction error ε
p, phase correction error
ε
u=ε
u1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
u2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
ε
i=ε
i1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
i2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
ε
p=ε
p1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
p2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
Step 4, the voltage correction error ε corresponding according to actual working environment temperature
u, current correction error ε
i, capability correction error ε
p, phase correction error ε
φthe correction of the voltage that under carrying out actual working environment temperature, tested electric power meter is measured, electric current, power and phase place.
As a kind of preferred version, the following formula of bearing calibration:
U
correct=U
measure/ (ε
u+ 1);
I
correct=I
measure/ (ε
i+ 1);
P
correct=P
measure/ (ε
p+ 1);
As another kind of preferred version, directly error amount can be input in the computation chip of tested electric power meter and correct.
The monitor the working environment change of temperature of tested electric power meter has exceeded the temperature threshold values T preset, then repeat step 3 and step 4.
The foregoing is only one exemplary embodiment of the present invention, to equivalent change and the improvement of the change of temperature section quantity or the change of temperature variation thresholding, all should be included within protection scope of the present invention.
Embodiment 2: a kind of temperature section calibration of electric power meter and metering method, comprise the following steps:
Step 1: be positioned over+25 DEG C of environment preset by specially becoming acquisition terminal,
Utilize standard source (CL303) to export setting voltage respectively, set tested electric current, set measured power and setting phase place, standard scale and specially change acquisition terminal are measured the setting voltage exported, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale (CL311V2) monitoring
setting 1, I
setting 1, P
if fixed 1,
specially change acquisition terminal FKGA43-ZY92G is utilized to measure voltage U
measure 1, I
measure 1, P
measure 1,
the computation chip that special change acquisition terminal FKGA43-ZY92G adopts is ATT7022B.
Calculate and specially become the voltage error ε of acquisition terminal at+25 DEG C
u1, current error ε
i1, power error ε
p1, phase error
ε
u1=((U
measure 1÷ U
setting 1)-1) × 100%;
ε
i1=((I
measure 1÷ I
setting 1)-1) × 100%;
ε
p1=((P
measure 1÷ P
setting 1)-1) × 100%;
Step 2: be positioned over high-low temperature test chamber by specially becoming acquisition terminal, is set as-30 DEG C that preset by the temperature in high-low temperature test chamber,
Utilize standard source to export setting voltage, setting electric current, setting power and setting phase place respectively, standard scale and specially change acquisition terminal are measured setting voltage, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 2, I
setting 2, P
setting 2,
specially change acquisition terminal is utilized to measure voltage U
measure 2, I
measure 2, P
measure 2,
Calculate and specially become the voltage error ε of acquisition terminal at-30 DEG C
u2, current error ε
i2, power error ε
p2, phase error
p2,
ε
u2=((U
measure 2÷ U
setting 2)-1) × 100%;
ε
i2=((I
measure 2÷ I
setting 2)-1) × 100%;
ε
p2=((P
measure 2÷ P
setting 2)-1) × 100%;
Step 3: specially become operating ambient temperature during acquisition terminal acquisition actual motion,
If actual working environment temperature is less than or equal to-30 DEG C, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u2, current correction error ε
ifor ε
i2, capability correction error ε
pfor ε
p2, phase correction error
for
If actual working environment temperature is greater than or equal to+25 DEG C, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u1, current correction error ε
ifor ε
i1, capability correction error ε
pfor ε
p1, phase correction error
for
If actual working environment temperature is lower than+25 DEG C and higher than-30 DEG C, then gone out by following formulae discovery, get the voltage correction error ε that actual working environment temperature is corresponding
u, current correction error ε
i, capability correction error ε
p, phase correction error
ε
u=ε
u1× (actual working environment temperature-(-30 DEG C))/(+25 DEG C-(-30 DEG C))+ε
u2× (+25 DEG C-actual working environment temperature)/(+25 DEG C-(-30 DEG C));
ε
i=ε
i1× (actual working environment temperature-(-30 DEG C))/(+25 DEG C-(-30 DEG C))+ε
i2× (+25 DEG C-actual working environment temperature)/(+25 DEG C-(-30 DEG C));
ε
p=ε
p1× (actual working environment temperature-(-30 DEG C))/(+25 DEG C-(-30 DEG C))+ε
p2× (+25 DEG C-actual working environment temperature)/(+25 DEG C-(-30 DEG C));
Be below the data of voltage calibration and metering:
Table one normal temperature (+25 DEG C) calibration data
Table two low temperature (-30 DEG C) calibration data
The continuous data of table three low temperature (-25 DEG C) not sectional calibration
The continuous data of table four low temperature (-25 DEG C) sectional calibration
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (2)
1. the temperature section of electric power meter is calibrated and a metering method, it is characterized in that, comprises following
Step 1: tested electric power meter is positioned over the ceiling temperature environment preset,
Utilize standard source to export setting voltage respectively, set tested electric current, set measured power and setting phase place, standard scale and tested electric power meter are measured the setting voltage exported, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 1, I
setting 1, P
setting 1,
tested electric power meter is utilized to measure voltage U
measure 1, I
measure 1, P
measure 1,
Calculate tested electric power meter voltage error ε at the ceiling temperature
u1, current error ε
i1, power error ε
p1, phase error
ε
u1=((U
measure 1÷ U
setting 1)-1) × 100%;
ε
i1=((I
measure 1÷ I
setting 1)-1) × 100%;
ε
p1=((P
measure 1÷ P
setting 1)-1) × 100%;
Step 2: tested electric power meter is positioned over high-low temperature test chamber, is set as the lower limit temperature preset by the temperature in high-low temperature test chamber,
Utilize standard source to export setting voltage, setting electric current, setting power and setting phase place respectively, standard scale and tested electric power meter are measured setting voltage, setting electric current, setting power and setting phase place simultaneously respectively, obtain U by standard scale monitoring
setting 2, I
setting 2, P
setting 2,
tested electric power meter is utilized to measure voltage U
measure 2, I
measure 2, P
measure 2,
Calculate the voltage error ε of tested electric power meter under lower limit temperature
u2, current error ε
i2, power error ε
p2, phase error
p2,
ε
u2=((U
measure 2÷ U
setting 2)-1) × 100%;
ε
i2=((I
measure 2÷ I
setting 2)-1) × 100%;
ε
p2=((P
measure 2÷ P
setting 2)-1) × 100%;
Step 3: tested electric power meter obtains operating ambient temperature during actual motion,
If actual working environment temperature is less than or equal to lower limit temperature, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u2, current correction error ε
ifor ε
i2, capability correction error ε
pfor ε
p2, phase correction error
for
If actual working environment temperature is greater than or equal to ceiling temperature, then get the voltage correction error ε that actual working environment temperature is corresponding
ufor ε
u1, current correction error ε
ifor ε
i1, capability correction error ε
pfor ε
p1, phase correction error
for
If actual working environment temperature is lower than ceiling temperature and higher than lower limit temperature, then gone out by following formulae discovery, get the voltage correction error ε that actual working environment temperature is corresponding
u, current correction error ε
i, capability correction error ε
p, phase correction error
ε
u=ε
u1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
u2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
ε
i=ε
i1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
i2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
ε
p=ε
p1× (actual working environment temperature-lower limit temperature)/(ceiling temperature-lower limit temperature)+ε
p2× (ceiling temperature-actual working environment temperature)/(ceiling temperature-lower limit temperature);
Step 4, the voltage correction error ε corresponding according to actual working environment temperature
u, current correction error ε
i, capability correction error ε
p, phase correction error
the correction of the voltage that under carrying out actual working environment temperature, tested electric power meter is measured, electric current, power and phase place.
2. the temperature section calibration of a kind of electric power meter according to claim 1 and metering method, is characterized in that, the monitor the working environment change of temperature of tested electric power meter has exceeded the temperature threshold values T preset, then repeat step 3 and step 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220506.8A CN104793172A (en) | 2015-05-04 | 2015-05-04 | Temperature segmentation calibrating and metering method of power metering device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510220506.8A CN104793172A (en) | 2015-05-04 | 2015-05-04 | Temperature segmentation calibrating and metering method of power metering device |
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|---|---|
| CN104793172A true CN104793172A (en) | 2015-07-22 |
Family
ID=53558139
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|---|---|---|---|
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556732A (en) * | 2015-09-30 | 2017-04-05 | 中兴通讯股份有限公司 | Current detection circuit and electric current detecting method |
| CN107483111A (en) * | 2017-06-27 | 2017-12-15 | 青岛海信宽带多媒体技术有限公司 | A kind of calibration method and device of the optical module transmitting luminous power based on temperature |
| CN107748347A (en) * | 2017-10-12 | 2018-03-02 | 华立科技股份有限公司 | The metering method and device of three-phase meter |
| CN109738849A (en) * | 2019-03-08 | 2019-05-10 | 威胜集团有限公司 | Universal quick calibration method for single-phase electric energy meter |
| CN110927657A (en) * | 2019-12-20 | 2020-03-27 | 深圳供电局有限公司 | Electric energy meter error correction method, device and equipment |
| CN111650434A (en) * | 2019-12-26 | 2020-09-11 | 北京博纳电气股份有限公司 | Method for single-phase intelligent electric energy meter to measure by adopting PCB type current sensor |
| CN112617299A (en) * | 2021-01-19 | 2021-04-09 | 河南中烟工业有限责任公司 | Method for detecting temperature of heating cigarette smoking set and method for analyzing temperature stability |
| CN112834979A (en) * | 2021-03-30 | 2021-05-25 | 云南电网有限责任公司电力科学研究院 | Error comparison system and method for high-voltage electric energy metering device under simulated working condition |
| CN113093089A (en) * | 2021-03-31 | 2021-07-09 | 宁波三星医疗电气股份有限公司 | Low-voltage power terminal temperature-based meter calibration method |
| CN113138362A (en) * | 2021-05-11 | 2021-07-20 | 深圳市先行电气技术有限公司 | Calibration method for automatically compensating electric energy metering error of electric energy meter |
| CN113172119A (en) * | 2021-04-01 | 2021-07-27 | 刘冬 | Bending part constant temperature control system in die working, control method, terminal and medium |
| CN114034919A (en) * | 2021-11-19 | 2022-02-11 | 中国兵器工业集团第二一四研究所苏州研发中心 | Voltage acquisition device based on single chip microcomputer and temperature compensation method thereof |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106556732A (en) * | 2015-09-30 | 2017-04-05 | 中兴通讯股份有限公司 | Current detection circuit and electric current detecting method |
| CN107483111A (en) * | 2017-06-27 | 2017-12-15 | 青岛海信宽带多媒体技术有限公司 | A kind of calibration method and device of the optical module transmitting luminous power based on temperature |
| CN107748347A (en) * | 2017-10-12 | 2018-03-02 | 华立科技股份有限公司 | The metering method and device of three-phase meter |
| CN109738849A (en) * | 2019-03-08 | 2019-05-10 | 威胜集团有限公司 | Universal quick calibration method for single-phase electric energy meter |
| CN110927657A (en) * | 2019-12-20 | 2020-03-27 | 深圳供电局有限公司 | Electric energy meter error correction method, device and equipment |
| CN111650434A (en) * | 2019-12-26 | 2020-09-11 | 北京博纳电气股份有限公司 | Method for single-phase intelligent electric energy meter to measure by adopting PCB type current sensor |
| CN112617299A (en) * | 2021-01-19 | 2021-04-09 | 河南中烟工业有限责任公司 | Method for detecting temperature of heating cigarette smoking set and method for analyzing temperature stability |
| CN112834979A (en) * | 2021-03-30 | 2021-05-25 | 云南电网有限责任公司电力科学研究院 | Error comparison system and method for high-voltage electric energy metering device under simulated working condition |
| CN113093089A (en) * | 2021-03-31 | 2021-07-09 | 宁波三星医疗电气股份有限公司 | Low-voltage power terminal temperature-based meter calibration method |
| CN113093089B (en) * | 2021-03-31 | 2022-06-03 | 宁波三星医疗电气股份有限公司 | Low-voltage power terminal temperature-based meter calibration method |
| CN113172119A (en) * | 2021-04-01 | 2021-07-27 | 刘冬 | Bending part constant temperature control system in die working, control method, terminal and medium |
| CN113138362A (en) * | 2021-05-11 | 2021-07-20 | 深圳市先行电气技术有限公司 | Calibration method for automatically compensating electric energy metering error of electric energy meter |
| CN114034919A (en) * | 2021-11-19 | 2022-02-11 | 中国兵器工业集团第二一四研究所苏州研发中心 | Voltage acquisition device based on single chip microcomputer and temperature compensation method thereof |
| CN114034919B (en) * | 2021-11-19 | 2024-05-24 | 中国兵器工业集团第二一四研究所苏州研发中心 | Voltage acquisition device based on single chip microcomputer and temperature compensation method thereof |
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