CN201859213U - Intelligent energy meter verifying device - Google Patents
Intelligent energy meter verifying device Download PDFInfo
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- CN201859213U CN201859213U CN2010206026854U CN201020602685U CN201859213U CN 201859213 U CN201859213 U CN 201859213U CN 2010206026854 U CN2010206026854 U CN 2010206026854U CN 201020602685 U CN201020602685 U CN 201020602685U CN 201859213 U CN201859213 U CN 201859213U
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- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 11
- 238000004891 communication Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
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- 238000011990 functional testing Methods 0.000 description 2
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Abstract
The utility model discloses an intelligent energy meter verifying device. An active compensation type current transformer is adopted as a current comparator, output current limit of a power source is expanded downwards to 0.1mA, a signal source is connected with a control computer and connected to a display, one channel of outputted voltage signals is inputted to a standard energy meter while another channel of outputted voltage signals is inputted to a verified energy meter, one channel of outputted current signals is directly inputted to the standard energy meter, another channel of outputted current signals is inputted to the verified energy meter after being transformed by the current comparator, the standard energy meter and the verified energy meter are simultaneously connected to an error computer for error computation, and computation results are fed back to the control computer. The intelligent energy meter verifying device is simple in structure and high in operability, and can realize function testing of intelligent energy meters.
Description
Technical field
The utility model belongs to fields such as electric automatization measurement, electric energy metrical, relates to a kind of electric energy meter calibrating apparatus of verification intelligent electric energy meter.
Background technology
Intelligent electric energy meter is one of intelligent grid important component part, and this table is made up of measuring unit, data processing unit, communication unit etc., has functions such as electrical energy metering, data processing, monitoring in real time, control automatically, information interaction.Intelligent electric meter shunt running and starting characteristics test are to weigh the important indicator of its performance, and whether they satisfy the rules requirement, are to be related to the key that can electric energy meter correctly measure electric energy.If shunt running is defective, when not electricity consumption of user, electric energy meter is still had good luck, infringement user's interests; If start defectively, electric energy meter sensitivity is on the low side, and at the user power utilization load hour, the register of electric energy meter does not have electric weight to add up, and the interests of infringement electrical supplier have directly influenced the reasonable clearing of the electricity charge.
The technical indicator of electric energy meter calibrating apparatus does not have clear and definite technical requirement to the accuracy of the following range of device output current 0.1A at present.Press JJG596 electronic electric energy meter vertification regulation regulation, class of accuracy be 0.2S level, fundamental point stream for the electric energy meter of 1A at 0.01I
bDuring load calibrating point, its error precision there is specific requirement, and common electric energy meter calibrating apparatus can't guarantee the accuracy of 0.01A (10mA) and following output current, JJG597 AC electrical energy meter calibration vertification regulation is no more than 5% to the starting current of device and the supervision error of indication of starting power, to electric current output stabilization time and degree of stability not having other specific (special) requirements, easily cause the situation that device starts electric energy meter and the appearance of shunt running test findings is judged by accident, have a strong impact on the fair and just of electric energy metrical.
In addition, there are repugnancy in the mode of connection and field wiring mode when examining and determine electric energy meter with electric energy meter calibrating apparatus in the laboratory, and the electric energy meter calibrating apparatus prior function does not satisfy the requirement of intelligent electric energy expanded function test at present, as Long-distance Control, safety certification, communication channel test etc., therefore press for the new intelligent electric energy meter calibrating installation of development.
Summary of the invention
The utility model provides a kind of new intelligent electric energy meter calibrating installation, and this intelligent electric energy meter calibrating installation electric current output area reaches 20 μ A～100A; Have that three-phase and four-line is meritorious, the two elements phase three-wire three meritorious and the meritorious mode of connection of three element phase three-wire three; The phase three-wire three mode of connection has " U
BGround connection " and " U
BEarth-free " option, the three-phase and four-line mode of connection have " U
NGround connection " and " U
NEarth-free " option; Support Long-distance Control, safety certification, communication channel test, satisfy the requirement of intelligent electric energy meter functional test.
The technical scheme that its technical matters that solves the utility model adopts is:
Described current comparator adopts active compensation formula current transformer, the output current limit of device power supply is expanded to 0.1mA downwards, signal source is connected with control computer, signal source is to connecting display device, the voltage signal one tunnel of output inputs to standard electric energy meter, and one the tunnel inputs to tested electric energy meter; The current signal one tunnel of output is directly inputted into standard electric energy meter, and one the tunnel inputs to tested electric energy meter after the current comparator conversion; Standard electric energy meter and tested electric energy meter are connected to Error Calculator simultaneously and carry out the Error Calculation processing, and result of calculation is fed back to control computer.
Adopt serial ports to be connected between signal source and the computing machine.
Described current comparator is expanded its current output limit by active compensation formula current transformer.
The utility model can carry out the north source of 0.1A and following little electric current, judges accurately whether various model intelligent electric energy meter starting characteristics tests and shunt running test is qualified, and test method is simple, and is workable; Support Long-distance Control, safety certification, communication channel test, can realize functional test, provide technical basis for metrological service and manufacturer more effectively carry out electric energy meter calibration to intelligent electric energy meter.
Description of drawings
Fig. 1 is the utility model structural representation.
Figure number wherein, 1-signal source, 2-control computer, 3-display device, 4-current comparator, 5-standard electric energy meter, the tested electric energy meter of 6-, 7-Error Calculator.
Embodiment
Shown in accompanying drawing, current comparator adopts active compensation formula current transformer, the output current limit of device power supply is expanded to 0.1mA downwards, signal source is connected with control computer, signal source is to connecting display device, the voltage signal one tunnel of output inputs to standard electric energy meter, and one the tunnel inputs to tested electric energy meter; The current signal one tunnel of output is directly inputted into standard electric energy meter, and one the tunnel inputs to tested electric energy meter after the current comparator conversion; Standard electric energy meter and tested electric energy meter are connected to Error Calculator simultaneously and carry out the Error Calculation processing, and result of calculation is fed back to control computer.Adopt serial ports to be connected between signal source and the computing machine.Described current comparator is expanded its current output limit by active compensation formula current transformer.
In the utility model, adopt serial ports to be connected between signal source 1 and the control computer 2.The voltage of signal source output, current signal show by display device 3.Adopt current comparator 4, the little current segment of device signal source output is expanded downwards according to 1000: 1 proportionate relationship, the measurement range of current comparator is 0.2%～120%, makes its minimum output current can be accurate to 20 μ A, satisfies the testing requirements of various model intelligent electric energy meters.The current signal one tunnel of signal source output is directly inputted into standard electric energy meter 5, and one the tunnel inputs to tested electric energy meter 6 after the current comparator conversion; The voltage signal one tunnel of signal source output inputs to standard electric energy meter, and one the tunnel inputs to tested electric energy meter.Adopt method of standard table calibrating electric energy meter, the energy value that standard electric energy meter and tested electric energy meter are measured is simultaneously compared, carry out the Error Calculation processing, thereby draw the relative error of tested electric energy meter by Error Calculator 7.
The utility model expands to 0.1mA downwards by the little electric current that the active electric current comparator will install power supply output.The current comparator principle is: current comparator adopts zero magnetic flux testing circuit core technology, eliminates the error that exciting curent causes, with improve once, secondary ratio and angular difference, thereby improve the accuracy of metering, improve accuracy of detection.
Current comparator is an active compensation formula current transformer, and its no-load voltage ratio is 1000: 1, and electric power outputting current is expanded downwards.Have two groups of specifications and select, first group is the 1000mA/1mA current comparator, and its class of accuracy is 0.02～0.05 grade (more than or equal to 50% POL time be 0.02 grade, be 0.05 grade during less than 50% POL); Second group is the 100mA/0.1mA current comparator, and class of accuracy is 0.05 grade.Two kinds of comparator carrying load abilities are 0.5 ohm, but are 0.8～1.0 o'clock operate as normal in power factor.
Claims (4)
1. intelligent electric energy meter calibrating installation, comprise signal source, control computer, display device, current comparator, standard electric energy meter, tested electric energy meter and Error Calculator, it is characterized in that, signal source is connected with control computer, signal source is to connecting display device, the voltage signal one tunnel of output inputs to standard electric energy meter, and one the tunnel inputs to tested electric energy meter; The current signal one tunnel of output is directly inputted into standard electric energy meter, and one the tunnel inputs to tested electric energy meter after the current comparator conversion; Standard electric energy meter and tested electric energy meter are connected to Error Calculator simultaneously and carry out the Error Calculation processing, and result of calculation is fed back to control computer.
2. a kind of intelligent electric energy meter calibrating installation according to claim 1 is characterized in that, adopts serial ports to be connected between signal source and the computing machine.
3. a kind of intelligent electric energy meter calibrating installation according to claim 1 is characterized in that, described current comparator is expanded its current output limit by active compensation formula current transformer.
4. a kind of intelligent electric energy meter calibrating installation according to claim 1 is characterized in that, described current comparator adopts active compensation formula current transformer, the output current of device power supply is limit expand to 0.1mA downwards.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206026854U CN201859213U (en) | 2010-11-11 | 2010-11-11 | Intelligent energy meter verifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206026854U CN201859213U (en) | 2010-11-11 | 2010-11-11 | Intelligent energy meter verifying device |
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| CN201859213U true CN201859213U (en) | 2011-06-08 |
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| CN2010206026854U Expired - Lifetime CN201859213U (en) | 2010-11-11 | 2010-11-11 | Intelligent energy meter verifying device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353924A (en) * | 2011-06-17 | 2012-02-15 | 杭州炬华科技股份有限公司 | Parallel meter detection method of electric energy meter |
| CN102879760A (en) * | 2012-09-29 | 2013-01-16 | 郑州三晖电气股份有限公司 | Method and device for checking errors of direct current electric energy meter by using standard alternating current electric energy meter |
| CN102914760A (en) * | 2012-09-27 | 2013-02-06 | 中国电力科学研究院 | Direct-current power meter calibrating device |
| CN102967841A (en) * | 2012-11-29 | 2013-03-13 | 辽宁省电力有限公司电力科学研究院 | Automatic digital multimeter verification system and method based on meter and source integration and application of system and method |
| CN103293509A (en) * | 2012-02-29 | 2013-09-11 | 陕西省地方电力（集团）有限公司 | Calibrating method of electric energy meter system parameters |
| CN103558578A (en) * | 2013-10-30 | 2014-02-05 | 国家电网公司 | Thermistor detection system for electronic electric energy meter and method of system |
| CN104316897A (en) * | 2014-10-29 | 2015-01-28 | 上海德布森电气有限公司 | Detection device for three-phase multifunctional watt-hour meter |
| CN104635195A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | Walking beam type pumping unit applied load power meter on-spot error tester |
| CN104808168A (en) * | 2015-03-25 | 2015-07-29 | 广州市格宁电气有限公司 | Rapid electric energy meter verification method based on segmented current technology |
| CN113030837A (en) * | 2021-03-04 | 2021-06-25 | 青岛鼎信通讯股份有限公司 | Full-range current output module and method based on electric energy meter calibrating device |
-
2010
- 2010-11-11 CN CN2010206026854U patent/CN201859213U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353924A (en) * | 2011-06-17 | 2012-02-15 | 杭州炬华科技股份有限公司 | Parallel meter detection method of electric energy meter |
| CN103293509A (en) * | 2012-02-29 | 2013-09-11 | 陕西省地方电力（集团）有限公司 | Calibrating method of electric energy meter system parameters |
| CN102914760A (en) * | 2012-09-27 | 2013-02-06 | 中国电力科学研究院 | Direct-current power meter calibrating device |
| CN102914760B (en) * | 2012-09-27 | 2015-11-04 | 中国电力科学研究院 | A kind of direct current energy meter calibrating installation |
| CN102879760B (en) * | 2012-09-29 | 2014-09-17 | 郑州三晖电气股份有限公司 | Method and device for checking errors of direct current electric energy meter by using standard alternating current electric energy meter |
| CN102879760A (en) * | 2012-09-29 | 2013-01-16 | 郑州三晖电气股份有限公司 | Method and device for checking errors of direct current electric energy meter by using standard alternating current electric energy meter |
| CN102967841A (en) * | 2012-11-29 | 2013-03-13 | 辽宁省电力有限公司电力科学研究院 | Automatic digital multimeter verification system and method based on meter and source integration and application of system and method |
| CN103558578A (en) * | 2013-10-30 | 2014-02-05 | 国家电网公司 | Thermistor detection system for electronic electric energy meter and method of system |
| CN104635195A (en) * | 2013-11-13 | 2015-05-20 | 中国石油化工股份有限公司 | Walking beam type pumping unit applied load power meter on-spot error tester |
| CN104635195B (en) * | 2013-11-13 | 2017-09-08 | 中国石油化工股份有限公司 | Beam pumping unit applied load electric energy meter error on-spot tester |
| CN104316897A (en) * | 2014-10-29 | 2015-01-28 | 上海德布森电气有限公司 | Detection device for three-phase multifunctional watt-hour meter |
| CN104808168A (en) * | 2015-03-25 | 2015-07-29 | 广州市格宁电气有限公司 | Rapid electric energy meter verification method based on segmented current technology |
| CN104808168B (en) * | 2015-03-25 | 2017-09-12 | 广州市格宁电气有限公司 | A kind of electric energy meter fast calibration method based on segmented current technology |
| CN113030837A (en) * | 2021-03-04 | 2021-06-25 | 青岛鼎信通讯股份有限公司 | Full-range current output module and method based on electric energy meter calibrating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: SHAANXI ZHONGSHI POWER TECHNOLOGY CO., LTD. Assignor: Shaanxi Electric Power Research Institute Contract record no.: 2011610000071 Denomination of utility model: Intelligent ammeter calibrating device with switchable virtual and true loads and method thereof Granted publication date: 20110608 License type: Exclusive License Record date: 20110704 |
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| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Free format text: FORMER OWNER: SHAANXI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140327 Owner name: SHAANXI ELECTRIC POWER RESEARCH INSTITUTE Effective date: 20140327 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 710054 XI'AN, SHAANXI PROVINCE TO: 100761 XICHENG, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140327 Address after: 100761 West Chang'an Avenue, Beijing, No. 86, No. Patentee after: State Grid Corporation of China Patentee after: Shaanxi Electric Power Research Institute Address before: 710054 No. 308 Youyi East Road, Shaanxi, Xi'an Patentee before: Shaanxi Electric Power Research Institute |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |