CN108181605A - A kind of meter and the electric energy meter and detection method of temperature and Constant charge soil joint effect - Google Patents
A kind of meter and the electric energy meter and detection method of temperature and Constant charge soil joint effect Download PDFInfo
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- CN108181605A CN108181605A CN201810110125.8A CN201810110125A CN108181605A CN 108181605 A CN108181605 A CN 108181605A CN 201810110125 A CN201810110125 A CN 201810110125A CN 108181605 A CN108181605 A CN 108181605A
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- 239000002689 soil Substances 0.000 title claims abstract description 41
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 230000009916 joint effect Effects 0.000 title claims abstract description 13
- 230000006698 induction Effects 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000004088 simulation Methods 0.000 claims abstract description 13
- 239000000203 mixture Substances 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 15
- 238000004364 calculation method Methods 0.000 claims description 11
- 238000002474 experimental method Methods 0.000 claims description 9
- 239000004020 conductor Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 230000007935 neutral effect Effects 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 5
- 230000005055 memory storage Effects 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 230000005540 biological transmission Effects 0.000 description 9
- 230000005611 electricity Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
A kind of meter and the electric energy meter and detection method of temperature and Constant charge soil joint effect, the electric energy meter include Current Transmit, first resistor R1, second resistance R2,3rd resistor R3, A/D converter, DSP, display, storage unit and communication unit；Further include magnetic field induction unit and temperature sensor.The magnetic induction intensity and temperature information of Constant charge soil when magnetic field induction unit and temperature sensor difference collection site in electric energy meter are run, external network is transferred to the information in electric energy meter；During detection, according to the table number of checklist, the information in certain period is extracted from main website, control Constant charge soil generator and the live running environment of high-low temperature chamber simulation, in laboratory simulation scene actual motion environment, the composition error of checklist is obtained, to examine the performance of electric energy meter.
Description
Technical field
The present invention relates to a kind of meter and the electric energy meters and detection method of temperature and Constant charge soil joint effect, belong to electric energy meter technology
Field.
Background technology
One of equipment important as intelligent grid, the accurate metering of intelligent electric energy meter and reliability service directly affect electricity consumption
Charge calculation between user and electric company.It, can be to electricity according to relevant national standard or company standard before installing at the scene
It can be inspected by random samples and the full performance test after arrival before table progress arrival.In addition, running electric energy meter can also be carried out periodically
Site Detection.Site Detection Main Basiss DLT448-2016《Electric energy metering device technical management regulation》, the condition of field-checking
It is as follows：Environment temperature is (5~35) DEG C；Relative humidity is very much not in 85%；Frequency departure is less than ± the 0.5% of rated frequency；Electricity
Pressure is not to be exceeded ± 10% to rated value deviation；The power of field load should be practical common load, when load current is less than
When 10% or power factor of the Calibrated current of tested electric energy meter are less than 0.5, field calibration should not be carried out.Site Detection is in fact
A kind of not stringent detection mode because field calibration device is also under the complex environment at scene, can not ensure that it has and reality
Test the same metering performance under the conditions of room.However, only carrying out detection in laboratory conditions obviously can not accurately reflect electricity
It can the table performance under actual motion environment at the scene.
Invention content
The object of the present invention is to for the detection of existing electric energy meter field there are the problem of, propose a kind of meter and temperature and perseverance
The electric energy meter and detection method of magnetic field joint effect.
Realize that technical scheme is as follows：A kind of meter and the electric energy meter detection side of temperature and Constant charge soil joint effect
Method, the method set magnetic field induction unit and temperature sensor in electric energy meter；Constant charge soil during collection site operation respectively
Magnetic induction intensity and temperature information, the data in electric energy meter are transferred to external network；During detection, according to the table of checklist
Number, the information in certain period is extracted from main website, Constant charge soil generator and the live running environment of high-low temperature chamber simulation are controlled, in reality
The live actual motion environment of room simulation is tested, obtains the composition error of checklist.
The electric energy meter includes：Current Transmit, first resistor R1, second resistance R2,3rd resistor R3, temperature sensing
Device, magnetic field induction unit, A/D converter, DSP, display, storage unit and communication unit；Current Transmit primary side around
Group is connect with neutral conductor N；The secondary side winding of current transformer is in parallel with first resistor R1, the input of one end and A/D converter
End connection, other end ground connection；Second resistance R2 and 3rd resistor R3 series connection, and connect respectively with phase line L and neutral conductor N；Third
Resistance R3 connect the input terminal of A/D converter, other end ground connection with the public connecting end of second resistance R2；Magnetic field induction unit leans on
Nearly Current Transmit installation, and connect with the input terminal of A/D converter；The input terminal of temperature sensor and A/D converter connects
It connects；The output terminal of A/D converter and the output terminal of DSP connect；DSP also connects with communication unit, display and storage unit respectively
It connects.
The operation principle of the electric energy meter is as follows：The electric current of powering load is converted into low current mould by Current Transmit
Intend signal, and pass through A/D converter and be converted into digital signal and export to DSP；Resistance R2 and resistance R3 is by the electricity of powering load
Pressure obtains small voltage analog signal, and be converted into digital signal by A/D converter and export to DSP by electric resistance partial pressure；Feel in magnetic field
Answer unit that the Constant charge soil magnetic induction intensity of the close Current Transmit detected is transferred to DSP；Temperature sensor is by electric energy
Temperature signal in table is transferred to DSP；DSP carries out processing analysis to these digital informations, stores data into storage unit, leads to
It crosses display and shows concrete numerical value；Data in electric energy meter can be transferred to external network by communication unit.
It is as follows that data in the electric energy meter are transferred to external network step：
(1) the time interval Δ t that setting data acquire；
(2) record current time t；
(3) temperature sensor and magnetic field induction unit start gathered data；
(4) data are preserved to the storage unit to electric energy meter；
(5) the time interval t of setting transmissionm；
(6) judge whether to meet t+ Δs t≤tm, the return to step (2) if meeting；It is entered step if being unsatisfactory for (7)；
(7) external network is transferred data to；
(8) data and return to step (2) in storage unit are removed.
The detection method of the electric energy meter is as follows：
When the doubtful failure of certain block electric energy meter of scene operation, electric energy meter can be torn open back as checklist；According to quilt
Examine table table number information, called in main website the checklist memory storage unit preserve containing temperature, magnetic induction intensity, voltage and
Target data when carrying of current information；According to above-mentioned data, in laboratory by simulating the experiment, mould that scene temperature influences
Intend the experiment that live Constant charge soil influences, obtain the composition error of checklist.
The composition error test method of the checklist is as follows：
(1) checklist test device is established：Described device includes standard scale, calibration power source, error calculation unit, height
Incubator and Constant charge soil generator；The voltage circuit of standard scale is in parallel with the voltage circuit of checklist；The current circuit of standard scale with
The current circuit series connection of checklist；The pulse port of standard scale and checklist is connect with error calculation unit；Error calculation list
The pulse that member is sent out according to the pulse port of checklist and standard scale calculates checklist error under this operating condition；
(2) experiment that simulation scene temperature influences, checklist are positioned in high-low temperature chamber；According to checklist in certain period
Interior voltage and current curve, the output of control calibration power source meet the voltage and current test signal of existing running environment；Control
High-low temperature chamber so that temperature is 23 DEG C of reference temperature, obtains l at this time, and be denoted as α1；According to checklist within certain period
Temperature data, control high/low temperature the temperature inside the box is approximate with live operating ambient temperature, obtains checklist relative error at this time, and
It is denoted as α2；
(3) experiment that live Constant charge soil influences is simulated, checklist is positioned in Constant charge soil generator, according to checklist at certain
Voltage and current curve in period, the output of control calibration power source meet the voltage and current test letter of existing running environment
Number；According to Constant charge soil magnetic induction intensity data of the checklist within certain period, control Constant charge soil generator is generated to be transported with scene
The approximate Constant charge soil magnetic induction intensity of row environment, obtains checklist relative error at this time, and be denoted as α3；
(4) the calculation formula such as following formula of the composition error α, α of checklist are calculated：
The invention has the advantages that the present invention provides a kind of meter and the detection of the electric energy meter of temperature and Constant charge soil joint effect
Method obtains actual motion environmental data by the temperature sensor in electric energy meter and magnetic field induction unit, by internal communication
Unit sends data to external network, can be from main website extraction environment information, and in reality according to the table number of checklist during test
It tests room to simulate it, and then obtains the composition error of checklist, overcome conventional on-site detection method because standard calibration fills
Put the shortcomings that being in site environment and causing its class of accuracy that can not meet detection demand.
Description of the drawings
Fig. 1 is the electric energy meter principle schematic of the present invention；
Fig. 2 is the principle schematic of data transmission in the electric energy meter of the present invention；
Fig. 3 is the flow chart of data transmission in the electric energy meter of the present invention；
Fig. 4 is the electric energy meter detection method flow diagram of the present invention；
It is to simulate the test principle figure that scene temperature influences shown in Fig. 5；
It is the test principle figure that the live Constant charge soil of simulation influences shown in Fig. 6.
Specific embodiment
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings：
It is the electric energy meter principle schematic of the present invention shown in Fig. 1.
A kind of meter of the present embodiment and the electric energy meter of temperature and Constant charge soil joint effect, including Current Transmit, the first electricity
Hinder R1, second resistance R2,3rd resistor R3, temperature sensor, magnetic field induction unit, A/D converter, DSP, display, storage
Unit and communication unit.Current Transmit first side winding is connect with neutral conductor N；The secondary side winding of current transformer and the
One resistance R1 is in parallel, and the input terminal of one end and A/D converter connects, other end ground connection；Second resistance R2 and 3rd resistor R3 strings
Connection, and connect respectively with phase line L and neutral conductor N；The input terminal of 3rd resistor R3 one end and A/D converter connects, another termination
Ground；Magnetic field induction unit is installed close to Current Transmit, and is connect with the input terminal of A/D converter；Temperature sensor and A/D
The input terminal connection of converter；The output terminal of A/D converter and the output terminal of DSP connect；DSP also respectively with communication unit, aobvious
Show device and storage unit connection.
The electric current of powering load is converted into low current analog signal by Current Transmit, and is passed through A/D converter and turned
Digital signal is changed into export to DSP；Second resistance R2 and 3rd resistor R3 obtain the voltage of powering load by electric resistance partial pressure
To small voltage analog signal, and digital signal is converted by A/D converter and is exported to DSP；Magnetic field induction unit will detect
Constant charge soil magnetic induction intensity close to Current Transmit is transferred to DSP；Temperature sensor passes the temperature signal in electric energy meter
It is defeated by DSP；DSP carries out processing analysis to these digital informations, stores data into storage unit, is shown specifically by display
Numerical value；Data in electric energy meter can be transferred to external network by communication unit.
Fig. 2 is the schematic diagram of data transmission in the electric energy meter of the present invention.
Using the electric energy meter of the present embodiment by internal communication unit, will be preserved in storage unit containing temperature, magnetic
Induction, voltage and current information with when target data be transferred to external network；Between communication unit and external network
Transmission bandwidth carrier communication can be used, the modes such as RS485 or micropower are wireless；External network passes through GPRS or cdma communication side
Formula and master station communication realize the transmission of data；It should be noted that only show that the data transmission of 4 pieces of electric energy meters is shown as shown in the figure
It is intended to, when taiwan area has polylith electric energy meter, same method can be used and carry out data transmission.
Fig. 3 is the flow chart of data transmission in the electric energy meter of the present invention, is as follows：
Step 1：The time interval Δ t that data is set to acquire；
Step 2：Record current time t；
Step 3：Temperature sensor and magnetic field induction unit start gathered data；
Step 4：Data are preserved to the storage unit to electric energy meter；
Step 5：The time interval t of transmission is setm；
Step 6：Judge whether to meet t+ Δs t≤tm, the return to step 2 if meeting；7 are entered step if being unsatisfactory for；
Step 7：Transfer data to external network；
Step 8：Remove the data and return to step 2 in storage unit.
Fig. 4 is the electric energy meter detection method flow diagram of the present invention.
When being detected to checklist, according to the table number of tested electric energy meter, the electric energy meter is extracted in main website at certain section
Between residing temperature and the magnetic induction intensity information of Constant charge soil, while extract voltage and current data；According to above- mentioned information, pass through
The live running environment of high-low temperature chamber, Constant charge soil generator and the tested electric energy meter of calibration power source simulation is controlled, using standard scale
Method obtains the composition error of checklist.
It is to simulate the test principle figure that scene temperature influences shown in Fig. 5.
As shown in figure 5, the voltage circuit of standard scale is in parallel with the voltage circuit of checklist；The current circuit and quilt of standard scale
Examine the current circuit series connection of table；The pulse port of standard scale and checklist is connect with error calculation unit；Error calculation unit
The pulse sent out according to the pulse port of checklist and standard scale calculates checklist error under this operating condition；Checklist is placed
In high-low temperature chamber；According to voltage and current curve of the checklist within certain period, the output of control calibration power source meets existing
The voltage and current test signal of running environment；Control high-low temperature chamber so that temperature is 23 DEG C of reference temperature, obtains quilt at this time
Table relative error is examined, and is denoted as α1；According to temperature data of the checklist within certain period, control high/low temperature the temperature inside the box is with showing
Field operating ambient temperature is approximate, obtains checklist relative error at this time, and be denoted as α2。
It is the test principle figure that the live Constant charge soil of simulation influences shown in Fig. 6.
It is different from the experiment that simulation scene temperature influences, high-low temperature chamber is changed to Constant charge soil generator.
According to voltage and current curve of the checklist within certain period, the output of control calibration power source meets existing operation ring
The voltage and current test signal in border；According to Constant charge soil magnetic induction intensity data of the checklist within certain period, permanent magnetic is controlled
Field generator generates and the approximate Constant charge soil magnetic induction intensity of live running environment, obtains checklist relative error at this time, and
It is denoted as α3；The composition error α of checklist can be by formulaIt obtains.
Undeclared part involved in the present invention is same as the prior art or is realized using the prior art.
Claims (5)
1. a kind of meter and temperature and the electric energy meter detection method of Constant charge soil joint effect, which is characterized in that the method is in electric energy
Setting magnetic field induction unit and temperature sensor in table；The magnetic induction intensity and temperature of Constant charge soil during collection site operation respectively
Data in electric energy meter are transferred to external network by information；During detection, according to the table number of checklist, certain time is extracted from main website
Information in section controls Constant charge soil generator and the live running environment of high-low temperature chamber simulation, in the practical fortune in laboratory simulation scene
Row environment obtains the composition error of checklist.
2. a kind of meter according to claim 1 and temperature and the electric energy meter detection method of Constant charge soil joint effect, feature
It is, the electric energy meter includes：Current transformer, first resistor, second resistance, 3rd resistor, temperature sensor, magnetic field induction
Unit, A/D converter, DSP, display, storage unit and communication unit；Current transformer first side winding connects with neutral conductor N
It connects；The secondary side winding of current transformer is in parallel with first resistor, the input terminal connection of one end and A/D converter, another termination
Ground；Second resistance and 3rd resistor series connection, and connect respectively with phase line L and neutral conductor N；3rd resistor and second resistance it is public
Connecting pin connects the input terminal of A/D converter, other end ground connection；Magnetic field induction unit is installed close to current transformer, and and A/D
The input terminal connection of converter；The input terminal of temperature sensor and A/D converter connects；The output terminal of A/D converter and DSP's
Output terminal connects；DSP is also connect with communication unit, display and storage unit respectively.
3. a kind of meter according to claim 1 and temperature and the electric energy meter detection method of Constant charge soil joint effect, feature
It is, it is as follows that the data in the electric energy meter are transferred to external network step：
(1) the time interval Δ t that setting data acquire；
(2) record current time t；
(3) temperature sensor and magnetic field induction unit start gathered data；
(4) data are preserved to the storage unit to electric energy meter；
(5) the time interval t of setting transmissionm；
(6) judge whether to meet t+ Δs t≤tm, the return to step (2) if meeting；It is entered step if being unsatisfactory for (7)；
(7) external network is transferred data to；
(8) data and return to step (2) in storage unit are removed.
4. a kind of meter according to claim 1 and temperature and the electric energy meter detection method of Constant charge soil joint effect, feature
It is, the detection method of the electric energy meter is as follows：
When the doubtful failure of certain block electric energy meter of scene operation, electric energy meter can be torn open back as checklist；According to checklist
Table number information, called in main website the checklist memory storage unit preserve containing temperature, magnetic induction intensity, voltage and current
Target data when carrying of information；It is existing by simulating experiment, simulation that scene temperature influences in laboratory according to above-mentioned data
The experiment that field Constant charge soil influences, obtains the composition error of checklist.
5. a kind of meter according to claim 4 and temperature and the electric energy meter detection method of Constant charge soil joint effect, feature
It is, the composition error test method of the checklist is as follows：
(1) checklist test device is established：Described device includes standard scale, calibration power source, error calculation unit, high-low temperature chamber
With Constant charge soil generator；The voltage circuit of standard scale is in parallel with the voltage circuit of checklist；The current circuit of standard scale is with being detected
The current circuit series connection of table；The pulse port of standard scale and checklist is connect with error calculation unit；Error calculation unit root
The pulse sent out according to the pulse port of checklist and standard scale calculates checklist error under this operating condition；
(2) experiment that simulation scene temperature influences, checklist are positioned in high-low temperature chamber；According to checklist within certain period
Voltage and current curve, the output of control calibration power source meet the voltage and current test signal of existing running environment；Control height
Incubator so that temperature is 23 DEG C of reference temperature, obtains l at this time, and be denoted as α1；According to temperature of the checklist within certain period
Data, control high/low temperature the temperature inside the box is approximate with live operating ambient temperature, obtains checklist relative error at this time, and be denoted as
α2；
(3) experiment that live Constant charge soil influences is simulated, checklist is positioned in Constant charge soil generator, according to checklist in certain time
Voltage and current curve in section, the output of control calibration power source meet the voltage and current test signal of existing running environment；Root
According to Constant charge soil magnetic induction intensity data of the checklist within certain period, control Constant charge soil generator generates and live running environment
Approximate Constant charge soil magnetic induction intensity, obtains checklist relative error at this time, and be denoted as α3；
(4) the calculation formula such as following formula of the composition error α, α of checklist are calculated：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110125.8A CN108181605A (en) | 2018-02-05 | 2018-02-05 | A kind of meter and the electric energy meter and detection method of temperature and Constant charge soil joint effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810110125.8A CN108181605A (en) | 2018-02-05 | 2018-02-05 | A kind of meter and the electric energy meter and detection method of temperature and Constant charge soil joint effect |
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| Publication Number | Publication Date |
|---|---|
| CN108181605A true CN108181605A (en) | 2018-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810110125.8A Pending CN108181605A (en) | 2018-02-05 | 2018-02-05 | A kind of meter and the electric energy meter and detection method of temperature and Constant charge soil joint effect |
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| CN (1) | CN108181605A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188341A (en) * | 2018-09-18 | 2019-01-11 | 南方电网科学研究院有限责任公司 | Method, device and equipment for evaluating field operation error of electric energy meter and storage medium |
| CN111337719A (en) * | 2020-03-06 | 2020-06-26 | 国网江苏省电力有限公司营销服务中心 | Electric energy meter |
| 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 |
| CN113567908A (en) * | 2021-06-15 | 2021-10-29 | 国网湖南省电力有限公司 | Electric energy metering error evaluation method and device considering voltage fluctuation and temperature change |
| CN114114130A (en) * | 2021-09-18 | 2022-03-01 | 宁夏隆基宁光仪表股份有限公司 | Electric energy meter testing method, system and device based on actual load on simulation site |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957439A (en) * | 2010-02-10 | 2011-01-26 | 江西省电力科学研究院 | Sampling and calculating separated type electric energy meter calibrating method and electric energy meter site parameter recorder |
| CN102135608A (en) * | 2011-01-29 | 2011-07-27 | 四川电力科学研究院 | Electric energy metering and monitoring system of intelligent gateway |
| CN203673061U (en) * | 2013-12-31 | 2014-06-25 | 国家电网公司 | Onsite detecting system for electric energy meter |
| CN204903750U (en) * | 2015-08-12 | 2015-12-23 | 国网江西省电力科学研究院 | Intelligent ammeter detects with outside stationary magnetic field generating device |
| CN106291092A (en) * | 2016-07-29 | 2017-01-04 | 国家电网公司 | The anti-outside Constant charge soil interference method of a kind of intelligent electric meter |
| CN206096216U (en) * | 2016-07-29 | 2017-04-12 | 国家电网公司 | Prevent outside permanent magnetic field interference electric energy meter |
| CN106597356A (en) * | 2016-12-03 | 2017-04-26 | 国网江西省电力公司电力科学研究院 | Single-phase electric energy meter power frequency magnetic field influence quantity testing apparatus |
| CN207867022U (en) * | 2018-02-05 | 2018-09-14 | 国网江西省电力有限公司电力科学研究院 | It is a kind of meter and temperature and Constant charge soil joint effect electric energy meter |
-
2018
- 2018-02-05 CN CN201810110125.8A patent/CN108181605A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957439A (en) * | 2010-02-10 | 2011-01-26 | 江西省电力科学研究院 | Sampling and calculating separated type electric energy meter calibrating method and electric energy meter site parameter recorder |
| CN102135608A (en) * | 2011-01-29 | 2011-07-27 | 四川电力科学研究院 | Electric energy metering and monitoring system of intelligent gateway |
| CN203673061U (en) * | 2013-12-31 | 2014-06-25 | 国家电网公司 | Onsite detecting system for electric energy meter |
| CN204903750U (en) * | 2015-08-12 | 2015-12-23 | 国网江西省电力科学研究院 | Intelligent ammeter detects with outside stationary magnetic field generating device |
| CN106291092A (en) * | 2016-07-29 | 2017-01-04 | 国家电网公司 | The anti-outside Constant charge soil interference method of a kind of intelligent electric meter |
| CN206096216U (en) * | 2016-07-29 | 2017-04-12 | 国家电网公司 | Prevent outside permanent magnetic field interference electric energy meter |
| CN106597356A (en) * | 2016-12-03 | 2017-04-26 | 国网江西省电力公司电力科学研究院 | Single-phase electric energy meter power frequency magnetic field influence quantity testing apparatus |
| CN207867022U (en) * | 2018-02-05 | 2018-09-14 | 国网江西省电力有限公司电力科学研究院 | It is a kind of meter and temperature and Constant charge soil joint effect electric energy meter |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188341A (en) * | 2018-09-18 | 2019-01-11 | 南方电网科学研究院有限责任公司 | Method, device and equipment for evaluating field operation error of electric energy meter and storage medium |
| CN111337719A (en) * | 2020-03-06 | 2020-06-26 | 国网江苏省电力有限公司营销服务中心 | Electric energy meter |
| 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 |
| CN113567908A (en) * | 2021-06-15 | 2021-10-29 | 国网湖南省电力有限公司 | Electric energy metering error evaluation method and device considering voltage fluctuation and temperature change |
| CN113567908B (en) * | 2021-06-15 | 2024-01-23 | 国网湖南省电力有限公司 | Electric energy metering error evaluation method and device considering voltage fluctuation |
| CN114114130A (en) * | 2021-09-18 | 2022-03-01 | 宁夏隆基宁光仪表股份有限公司 | Electric energy meter testing method, system and device based on actual load on simulation site |
| CN114114130B (en) * | 2021-09-18 | 2024-05-14 | 宁夏隆基宁光仪表股份有限公司 | Electric energy meter testing method, system and device based on simulation site actual load |
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