CN104459600A - Portable intelligent electronic energy meter field calibration device - Google Patents

Portable intelligent electronic energy meter field calibration device Download PDF

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Publication number
CN104459600A
CN104459600A CN201410731037.1A CN201410731037A CN104459600A CN 104459600 A CN104459600 A CN 104459600A CN 201410731037 A CN201410731037 A CN 201410731037A CN 104459600 A CN104459600 A CN 104459600A
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CN
China
Prior art keywords
energy meter
meter
electric energy
standard
impulse
Prior art date
Application number
CN201410731037.1A
Other languages
Chinese (zh)
Inventor
刘佳
董旭亮
崔威
刘欢
王娟
Original Assignee
国家电网公司
国网河北省电力公司
国网河北省电力公司保定供电分公司
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Application filed by 国家电网公司, 国网河北省电力公司, 国网河北省电力公司保定供电分公司 filed Critical 国家电网公司
Priority to CN201410731037.1A priority Critical patent/CN104459600A/en
Publication of CN104459600A publication Critical patent/CN104459600A/en

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Abstract

The invention discloses a portable intelligent electronic energy meter field calibration device. The portable intelligent electronic energy meter field calibration device comprises a box body. A first pulse counter, a second pulse counter, a standard intelligent energy meter, a 9 V direct-current power supply, a load and a leakage protector are arranged in the box body. The first pulse counter is connected with an energy meter to be measured. The second pulse counter is connected with the standard intelligent energy meter. The input end of the standard energy meter is connected with the intelligent energy meter to be measured in series. The output end of the standard energy meter is connected with the load. The leakage protector is connected with the input end of the intelligent energy meter to be measured. The 9 V direct-current power supply supplies power to the first pulse counter and the second pulse counter. The portable intelligent electronic energy meter field calibration device has the advantages of being visual, high in practicability, easy to operate, popular and easy to understand, accurate and rapid in detection and the like.

Description

A kind of portable intelligent electronic formula Watt-hour meter's field test device

Technical field

The present invention relates to a kind of technical field of electronic electric energy meter service kit.

Background technology

The electricity that electric energy meter is walked is the foundation of user's electricity payment, and whether electric energy meter normal operation affects the livelihood of every family.Current, the advantages such as electronic electric energy meter is low with its power attenuation, volume is little, lightweight, precision is high, anti-electricity-theft, load is wide, easy for installation, function is many instead of originally old-fashioned mechanical power energy meter.But the thing followed be exactly now some illegal small enterprises manufactures some underproof electric energy meters, and these electric energy meter securities, poor stability, class of accuracy is low.Certain customers' promise breaking electricity consumption, exceedes the rated current electricity consumption of electric energy meter without authorization in addition, or the electric energy meter had these factors long neglected and in disrepair cause electric energy meter metering inaccurate.

Traditional inspection is allow user look for the electrician personnel of specialty to pull down electric energy meter to the measuring method that electric energy meter measures, the mechanism that the electric energy meter that client holds oneself goes to special metering qualification unit or aims at verification electric energy meter removes to check the speed of electric energy meter, and whole flow process exists following subject matter: 1, whether electrician accurately cannot do a clear and definite judgement to the electric energy meter metering run; 2, user is having no access to electricity during this period of time, has a strong impact on the power quality of user.Since it is so, electric energy meter metering " normally " of oneself is admitted by certain customers and refusal effect is examined, and hinders the work of electrician, so just need electrician immediately to show at the scene prove foundation effectively.

Along with the development of science and technology; the appearance of the instrument of field-checking electric energy meter in the market; although the charged inspection of energy; but wiring is complicated, requirement will have hi-tech personnel to operate, if outdoor solar light is strong; photoelectric sampler is not easy the output pulse signal gathering electric energy meter; and field electric energy table tester is expensive, protects improper instrument, easily damage.

Summary of the invention

Technical matters to be solved by this invention be to provide a kind of simple to operate, directly perceived, easy-to-understand, detect portable intelligent electronic formula Watt-hour meter's field test device accurately and fast.

For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of portable intelligent electronic formula Watt-hour meter's field test device, comprise casing, described box house is provided with the first impulse meter, second impulse meter, standard intelligent electric energy meter, 9V direct supply, load and earth leakage protective device, described first impulse meter is connected with intelligent electric energy meter to be measured, described second impulse meter is connected with standard intelligent electric energy meter, described standard electric energy meter input end and intelligent electric energy meter to be measured are connected in series, described standard electric energy meter output terminal is connected with load, described earth leakage protective device is connected with the input end of intelligent electric energy meter to be measured, described 9V direct supply provides power supply for described first impulse meter and described second impulse meter.

Preferably, described load is the hair drier of 1000W.

Preferably, described first impulse meter and the second impulse meter are GDD7949A-P12V 4-digit number circulation add subtract counter.

Preferably, described casing is provided with the through wires hole of cable incoming-outgoing wire.

Preferably, described standard intelligent electric energy meter is meet the qualified electric energy meter of standard GB/T/T7215.321 technical requirement in error range.

Adopt the beneficial effect that produces of technique scheme to be: the present invention is convenient to assembling and is produced, and intuitively, practical, easy-to-understand; Power customer also can on-the-spot be watched, and client is felt more relieved, and finally this is also very helpful equally to the work of taking over of the electricity charge and the protection of electric energy meter.Carry out stealing as client's private opening electric power meter seal carries out the hidden means such as stealing, adopt the method effectively to find equally, also have certain fright effect to lawless person, immediately investigate and prosecute, safeguard state interests and electricity consumption order.

Accompanying drawing explanation

Fig. 1 is circuit theory schematic diagram of the present invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.

As shown in Figure 1, the present invention is a kind of portable intelligent electronic formula Watt-hour meter's field test device, comprise casing, described box house is provided with the first impulse meter, second impulse meter, standard intelligent electric energy meter, 9V direct supply, load and earth leakage protective device, described first impulse meter is connected with intelligent electric energy meter to be measured, described second impulse meter is connected with standard intelligent electric energy meter, described standard electric energy meter input end and intelligent electric energy meter to be measured are connected in series, described standard electric energy meter output terminal is connected with load, described earth leakage protective device is connected with the input end of intelligent electric energy meter to be measured, described 9V direct supply provides power supply for described first impulse meter and described second impulse meter, described load is the hair drier of 1000W, described first impulse meter and the second impulse meter are GDD7949A-P12V 4-digit number circulation add subtract counter, described casing is provided with the through wires hole of cable incoming-outgoing wire, described standard intelligent electric energy meter is meet the qualified electric energy meter of standard GB/T/T7215.321 technical requirement in error range.

Embodiment:

General containing analog-and digital-two kinds of components in electronic system.Mimic channel is ingredient necessary in system.But for ease of storing, analyzing and signal transmission, digital circuit is superiority more.Electronic electric energy meter output signal is pulse signal.Counter is the more basic logic device in digital display circuit.It can not only record the number of input clock pulse, can also realize frequency division, regularly, produce clock pulse and pulse train etc.The kind of counter is a lot, by the difference of time clock input mode, synchronous counter and asynchronous counter can be divided into, by the difference of carry system, binary counter and nonbinary counter can be divided into, by the difference of decline trend digital in counting process, counter and down counter and up-down counter can be divided into.This product uses GDD7949A-P12V 4-digit number circulation add subtract counter.It has following characteristics: 1, adopt high-speed integrated chip, high-brightness LED charactron, good looking appearance, simple installation.2, have high-speed counting function, good stability, antijamming capability is strong, and counting precisely.3, count value power down is not lost 4, is widely used in automatic recipe maker, coiling machinery, package packing machine, the robotizations such as weaving and checkout equipment.Technical parameter: supply voltage: DC6V-15.5V, working current: <30mA, count signal: pulse, triggers edge: rising edge, indication range: 0000-9999, counting mode: (circulation) adds, reset signal: short circuit.Weight: 50g.Physical dimension: 79mm*43mm*30.5mm, display mode: LED numerical monitor, charactron: 0.56 inch of redness.It has the function that can identify electronic electric energy meter pulse, and accomplishes that its wiring is simple, use safety, can accomplish that real-time electric energy meter detects and anti-stealing electricity function.

In concrete operations, first in metering outfit, detect one piece in error range, meet the qualified electric energy meter (hereinafter referred to as standard scale) of standard GB/T/T7215.321 technical requirement before preliminary work, utility meters is with ± 2.0 grades.Then inside ghost electronic counter being arranged on electric energy meter, be convenient to wiring like this, run also reliable, and be convenient to install.The impulse meter that Here it is has made.Open ammeter box, first the electric energy meter that will detect is placed in the epi-position in casing, two epi-positions place impulse meter, and two epi-positions place the external 9V direct supply of input end of impulse meter, and its input terminal connects the electric energy meter pulse output end needing to detect.The intermediate terminal of impulse meter is used for short circuit, is used for reset counter.(noticing that the pulse of electric energy meter exports the polarity of input end of linkage counter) with monitor first piece of table under same load the number of output pulse.Then standard scale electric energy meter is placed in three epi-positions, four epi-positions place second impulse meter, with monitor second piece of table under same load the number of output pulse.Wiring aspect is same as described above.Connect with the primary circuit redness of 6 squares of hair drier, blue copper cash, secondary circuit is measuring-signal loop, connects with the yellow of 1.5 squares, green wire, and supply impulse meter is measured and used.The 9V direct supply black of 1.5 squares, red copper cash connect.Electric energy meter power-on connects 220V power supply, then electric energy meter to be detected is connected with standard scale, namely forms series circuit, preprepared hair-dryer is connected on the load-side of standard scale, forms simple series circuit.At this time two pieces of electric energy meters are the same by flowing through the electric current of electric energy meter under same load, and the rated voltage of two pieces of tables is equal, and the number of their output pulse is also identical.During with same electricity, measure the number that two pieces of electric energy meters export pulse separately, the numerical value then by two pieces of impulse meters are shown contrasts, thus the specialized circuitry of design.The method of calibration of three-phase power electric energy meter and reactive energy-meter is identical with above method, the electric energy meter that will detect only is needed to change three-phase power electric energy meter into, standard scale is changed into the same three-phase power electric energy meter the same with detected constant of electric energy meter, and sampling ratio is comparatively in respective electric energy meter for impulse meter.Because this counter is rising edge metering, so standard scale has ± 1imp/KWH a deviation with the electric energy meter that will detect, this belongs to normal phenomenon.

Such electronic electric energy meter on-site calibrator has just completed, and it is specially for field-checking list, three-phase are gained merit and idle electronic electric energy meter and a portable set designed and developed.The method application sampling with high precision technology, and in conjunction with latest digital signal processing method, for field-checking electric energy meter and other multiple electrical instrument provide the solution of a set of convenience and high-efficiency.

Claims (5)

1. a portable intelligent electronic formula Watt-hour meter's field test device, it is characterized in that: comprise casing, described box house is provided with the first impulse meter, second impulse meter, standard intelligent electric energy meter, 9V direct supply, load and earth leakage protective device, described first impulse meter is connected with intelligent electric energy meter to be measured, described second impulse meter is connected with standard intelligent electric energy meter, described standard electric energy meter input end and intelligent electric energy meter to be measured are connected in series, described standard electric energy meter output terminal is connected with load, described earth leakage protective device is connected with the input end of intelligent electric energy meter to be measured, described 9V direct supply provides power supply for described first impulse meter and described second impulse meter.
2. a kind of portable intelligent electronic formula Watt-hour meter's field test device according to claim 1, is characterized in that: described load is the hair drier of 1000W.
3. a kind of portable intelligent electronic formula Watt-hour meter's field test device according to claim 1, is characterized in that: described first impulse meter and the second impulse meter are GDD7949A-P12V 4-digit number circulation add subtract counter.
4. a kind of portable intelligent electronic formula Watt-hour meter's field test device according to claim 1, is characterized in that: described casing is provided with the through wires hole of cable incoming-outgoing wire.
5. a kind of portable intelligent electronic formula Watt-hour meter's field test device according to claim 1, is characterized in that: described standard intelligent electric energy meter is meet the qualified electric energy meter of standard GB/T/T7215.321 technical requirement in error range.
CN201410731037.1A 2014-12-05 2014-12-05 Portable intelligent electronic energy meter field calibration device CN104459600A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106093637A (en) * 2016-06-07 2016-11-09 国网四川省电力公司电力科学研究院 The removing method of dead band defect between intelligent substation primary equipment and secondary device
CN106154212A (en) * 2016-08-31 2016-11-23 宜兴市森维电子有限公司 A kind of EFT/B immunity experiment system under the conditions of electric energy meter bringing onto load
CN107356896A (en) * 2017-06-22 2017-11-17 深圳市科陆精密仪器有限公司 A kind of electric energy meter detection method, device and storage medium

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CN103645457A (en) * 2013-12-20 2014-03-19 国家电网公司 On-site inspection device for electric energy meter
CN103675752A (en) * 2012-11-30 2014-03-26 国网电力科学研究院 Electric energy meter rapid detection device and method thereof
CN203825180U (en) * 2013-12-24 2014-09-10 国家电网公司 Electric energy meter quick-calibrating device and system
CN203838326U (en) * 2014-01-15 2014-09-17 云南电力试验研究院(集团)有限公司电力研究院 Portable electric energy metering terminal calibration instrument
CN204359926U (en) * 2014-12-05 2015-05-27 国家电网公司 A kind of portable intelligent electronic formula Watt-hour meter's field test device

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646003A (en) * 1982-03-05 1987-02-24 Southern California Edison Company, Inc. Meter testing device
CN2938136Y (en) * 2006-08-29 2007-08-22 宋国元 Electric energy field detector with virtual loading
CN101980042A (en) * 2010-10-20 2011-02-23 河南大学 Design scheme for on-spot calibration instrument of small-sized single-phase electric energy meter
CN102455420A (en) * 2010-11-02 2012-05-16 河南省电力公司开封供电公司 Method for correcting electric energy meter on site
CN103675752A (en) * 2012-11-30 2014-03-26 国网电力科学研究院 Electric energy meter rapid detection device and method thereof
CN203396939U (en) * 2013-06-08 2014-01-15 国家电网公司 Running test device for portable electric energy meter
CN103645457A (en) * 2013-12-20 2014-03-19 国家电网公司 On-site inspection device for electric energy meter
CN203825180U (en) * 2013-12-24 2014-09-10 国家电网公司 Electric energy meter quick-calibrating device and system
CN203838326U (en) * 2014-01-15 2014-09-17 云南电力试验研究院(集团)有限公司电力研究院 Portable electric energy metering terminal calibration instrument
CN204359926U (en) * 2014-12-05 2015-05-27 国家电网公司 A kind of portable intelligent electronic formula Watt-hour meter's field test device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106093637A (en) * 2016-06-07 2016-11-09 国网四川省电力公司电力科学研究院 The removing method of dead band defect between intelligent substation primary equipment and secondary device
CN106093637B (en) * 2016-06-07 2019-04-23 国网四川省电力公司电力科学研究院 The removing method of dead zone defect between intelligent substation primary equipment and secondary device
CN106154212A (en) * 2016-08-31 2016-11-23 宜兴市森维电子有限公司 A kind of EFT/B immunity experiment system under the conditions of electric energy meter bringing onto load
CN106154212B (en) * 2016-08-31 2019-04-30 宜兴市森维电子有限公司 A kind of EFT/B immunity experiment system under the conditions of electric energy meter bringing onto load
CN107356896A (en) * 2017-06-22 2017-11-17 深圳市科陆精密仪器有限公司 A kind of electric energy meter detection method, device and storage medium

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Application publication date: 20150325