CN2938136Y - Electric energy field detector with virtual loading - Google Patents

Electric energy field detector with virtual loading Download PDF

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Publication number
CN2938136Y
CN2938136Y CN 200620075794 CN200620075794U CN2938136Y CN 2938136 Y CN2938136 Y CN 2938136Y CN 200620075794 CN200620075794 CN 200620075794 CN 200620075794 U CN200620075794 U CN 200620075794U CN 2938136 Y CN2938136 Y CN 2938136Y
Authority
CN
China
Prior art keywords
energy meter
electric energy
current
electric
dummy load
Prior art date
Application number
CN 200620075794
Other languages
Chinese (zh)
Inventor
宋国元
Original Assignee
宋国元
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宋国元 filed Critical 宋国元
Priority to CN 200620075794 priority Critical patent/CN2938136Y/en
Application granted granted Critical
Publication of CN2938136Y publication Critical patent/CN2938136Y/en

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Abstract

The utility model discloses a field measurer for electric power with virtual load, pertaining to a measuring apparatus. The utility model comprises a central processing unit CPU, a memory microprocessor, a photoelectric collector for collecting electric power of the electric energy meter, a displayer and a keyboard and it is characterized in that the utility model in addition comprises a virtual load which can generate large current signals to get a clamp circumscribed-current transformer which matches with the electric energy meter and only allows small current, and a signal processing module. The input terminal of the virtual load is electrically linked with the incoming wire of the electrical source-the electric energy meter; the output terminal of the virtual load is connected with the input terminal of the signal processing module through the current transformer CT and the potential transformer PT and the signals are input into the microprocessor after processing. The utility model has the advantages that worries about the load of the user, power-off done to the user and additional load are not needed; the circuit connection operation is easy; the electric energy meter detection on the spot can be done quickly and accurately with small energy consumption and little heat in the detection process.

Description

The electric energy meter field tester of band dummy load

Technical field

The utility model relates to the on-the-spot checkout equipment to the metering electrical energy devices, particularly a kind of electric energy meter field tester with dummy load that the ammeter metering accuracy is detected

Background technology

Power consumer is large in number and widely distributed, the work of opposing electricity-stealing is complexity of electric power system and large order, in addition, the electricity consumption dispute inaccurate and that therefore cause of customer complaint electric power metering device, also be the very thorny work of power supply department, particularly in vast rural area, measure professional's shortage, the contradiction of more than working is more outstanding.

It is bigger actual in electric loading or the external electric loading of using that existing ammeter on-the-spot test equipment needs the user to have in the test interlude, wiring complexity in the work interlude, external consumer thermal value is big, factors such as safety problem in the wiring interlude make this need of work metering professional or professional ability just can finish than forceful electric power workman person

Summary of the invention

Goal of the invention of the present utility model provides a kind of electric energy meter field tester with dummy load, fundamentally addresses the above problem, and for electric system provides convenient a use, quick, security measurement goes out the accuracy in-situs tester device of various ammeters meterings.

The utility model is achieved in that a kind of electric energy meter field tester with dummy load, it comprises the microprocessor that contains central processor CPU and storer, photoelectricity collector, display and the keyboard of gathering the electrical energy meter electricity energy, it is characterized in that it also comprises the dummy load that produces big current signal, be used to obtain and the be complementary external clamp current transformer of little electric current of electric energy meter electric current, signal processing module; The input end of dummy load and power supply are that the inlet wire of electric energy meter is electrically connected, and output terminal is connected input microprocessor after the signal Processing by current transformer CT and voltage transformer pt with the signal processing module input port.

Technique scheme is to utilize dummy load to offer big current signal of electric energy meter, allow electric energy meter fast turn-around, gather the electric energy meter data by the photoelectricity collector, the virtual voltage current delivery that will be carried on the electric energy meter by signal Processing and conversion arrives tester simultaneously, the two is compared, thereby check the accuracy of ammeter measuring apparatus fast.

The utility model has the advantages that: do not need to be concerned about the user load situation, do not need the user is had a power failure that also do not need external load, wiring is simple to operate, can carry out the scene to electric energy meter quickly and accurately and detect, and energy consumption is little in the measuring process, does not generate heat.

Description of drawings

Accompanying drawing is the utility model electrical schematic diagram.

Embodiment

Among the figure: 1, microprocessor, 2, dummy load, 3, the photoelectricity collector, 4, external clamp current transformer CT, 5, voltage transformer pt, 6 signal processing modules, 7, display, 8, keyboard, the output of 9 electrical energy pulses, 10, electric energy meter.

Embodiment

As shown in the figure: the utility model is made of following hardware:

The microprocessor 1 that contains central processor CPU and storer is used to control information processing, information stores, the organizational scheduling of total system, and data communication etc. comprise motherboard circuit, CPU, storer, communication interface etc.

Dummy load 2, this equipment are devices that the big electric current of low energy consumption can be provided, and in the present embodiment, what dummy load 2 adopted is transformer.

Photoelectricity collector 3 converts the light signal or the pulse signal of electric energy meter to electric signal, is sent to CPU, is used for counting.

External clamp current transformer (CT) 4, pass through current transformer, the little electric current that acquisition and electric energy meter electric current are complementary, through A/D conversion input DSP, calculate the actual current of the measured electric energy meter of flowing through, non-loaded as the user, then need not external clamp current transformer CT, tester can directly be gathered the electric current of dummy load by inner CT.

Voltage transformer (VT) (PT) 5, by voltage transformer (VT), acquisition and the low-voltage that measured electric energy meter input voltage is complementary are changed input DSP through A/D, thereby calculate the virtual voltage of the input of measured ammeter.

Signal processing module (6), A/D conversion and DSP computing module are used for the processing of signal voltage, electric current, and the special-purpose computing CPU of DSP is used for voltage, electric current, the calculating of electric flux.

Display 7 shows measurement result.

Keyboard 8.

Electrical energy pulse output 9 is used for the adjustment of tester itself is used.

Dummy load 2 is shown access electric energy meter 10 according to accompanying drawing, tester obtains working power from N and L, through after the conversion of dummy load, produce the low-voltage and high-current signal at L and L1, the input voltage of electric energy meter is line voltage (alternating current 220V), because electric energy meter is operated under line voltage, the big current condition, so the electric energy meter metering of turning round fast.

The electric flux of electric energy meter can be by obtaining the collection of electric energy meter light signal or pulse signal, and photoelectricity collector 3 converts light signal to electric signal, and CPU calculates the electric flux W1 in unit interval of electric energy meter.

Simultaneously tester can obtain to be carried in virtual voltage and electric current on the electric energy meter by current transformer 4 and voltage transformer (VT) 5, calculates the electric flux W2 in unit interval of tester actual measurement by A/D conversion and DSP, passes to CPU.

CPU compares W1 in the same time period and W2, thereby judges the accuracy of this electric energy meter metering.Demonstrate comparison result, tester is kept at measurement result in the storer simultaneously.The tester can be used for the data analysis statistics and form electronic record with data transfer to computing machine.

Claims (2)

1, the electric energy meter field tester of band dummy load, it comprises the microprocessor (1) that contains central processor CPU and storer, photoelectricity collector (3), display (7) and the keyboard (8) of gathering the electrical energy meter electricity energy, it is characterized in that it also comprises the dummy load (2) that produces big current signal, be used to obtain and the be complementary external clamp current transformer (4) of little electric current of electric energy meter electric current, signal processing module (6); The input end of dummy load (2) and power supply are that the inlet wire of electric energy meter is electrically connected, and output terminal is connected input microprocessor after the signal Processing (1) by current transformer CT and voltage transformer pt with the signal processing module input port.
2, the electric energy meter field tester of band dummy load according to claim 1 is characterized in that dummy load is the transformer that can produce big current signal.
CN 200620075794 2006-08-29 2006-08-29 Electric energy field detector with virtual loading CN2938136Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620075794 CN2938136Y (en) 2006-08-29 2006-08-29 Electric energy field detector with virtual loading

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620075794 CN2938136Y (en) 2006-08-29 2006-08-29 Electric energy field detector with virtual loading

Publications (1)

Publication Number Publication Date
CN2938136Y true CN2938136Y (en) 2007-08-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620075794 CN2938136Y (en) 2006-08-29 2006-08-29 Electric energy field detector with virtual loading

Country Status (1)

Country Link
CN (1) CN2938136Y (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101231333B (en) * 2008-01-11 2012-01-18 莱芜供电公司 Portable metrology charge instrument
CN101685147B (en) * 2008-09-22 2012-02-22 黑龙江省电力科学研究院 Test device and method for simulating field electric energy measurement
WO2013040726A1 (en) * 2011-09-25 2013-03-28 安徽省电力公司宣城供电公司 On-site tester for electricity usage information collection system and testing method thereof
CN103558575A (en) * 2013-10-29 2014-02-05 国家电网公司 Method for automatic verification system compatible with three-phase electric energy meters and electric information collection terminals
CN103941218A (en) * 2014-05-20 2014-07-23 莱芜鲁能开源集团电器有限公司 On-site general load tester for newly-mounted electric energy meter
CN104459600A (en) * 2014-12-05 2015-03-25 国家电网公司 Portable intelligent electronic energy meter field calibration device
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
CN105785314A (en) * 2014-05-20 2016-07-20 莱芜鲁能开源集团电器有限公司 Load tester for electric-energy meter newly-installed on site
CN105911514A (en) * 2016-06-30 2016-08-31 海盐新跃电器有限公司 External virtual load device for on-site electric energy calibration
CN106066466A (en) * 2016-06-30 2016-11-02 海盐新跃电器有限公司 A kind of electric energy field-checking is with built-in virtual load device
CN107621622A (en) * 2017-09-20 2018-01-23 河南工业大学 A kind of three-phase low-voltage electric energy meter field check meter

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101231333B (en) * 2008-01-11 2012-01-18 莱芜供电公司 Portable metrology charge instrument
CN101685147B (en) * 2008-09-22 2012-02-22 黑龙江省电力科学研究院 Test device and method for simulating field electric energy measurement
WO2013040726A1 (en) * 2011-09-25 2013-03-28 安徽省电力公司宣城供电公司 On-site tester for electricity usage information collection system and testing method thereof
CN103558575A (en) * 2013-10-29 2014-02-05 国家电网公司 Method for automatic verification system compatible with three-phase electric energy meters and electric information collection terminals
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
CN103941218A (en) * 2014-05-20 2014-07-23 莱芜鲁能开源集团电器有限公司 On-site general load tester for newly-mounted electric energy meter
CN103941218B (en) * 2014-05-20 2016-08-24 莱芜鲁能开源集团电器有限公司 New clothes electric energy meter scene Universal load tester
CN105785314A (en) * 2014-05-20 2016-07-20 莱芜鲁能开源集团电器有限公司 Load tester for electric-energy meter newly-installed on site
CN105785314B (en) * 2014-05-20 2018-07-06 莱芜鲁能开源集团电器有限公司 The load tester of live new clothes electric energy meter
CN104459600A (en) * 2014-12-05 2015-03-25 国家电网公司 Portable intelligent electronic energy meter field calibration device
CN105911514A (en) * 2016-06-30 2016-08-31 海盐新跃电器有限公司 External virtual load device for on-site electric energy calibration
CN106066466A (en) * 2016-06-30 2016-11-02 海盐新跃电器有限公司 A kind of electric energy field-checking is with built-in virtual load device
CN107621622A (en) * 2017-09-20 2018-01-23 河南工业大学 A kind of three-phase low-voltage electric energy meter field check meter

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Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C41 Transfer of patent application or patent right or utility model
ASS Succession or assignment of patent right

Owner name: XUZHOU YUAN BO ELECTRONIC TECHNOLOGY CO., LTD.

Free format text: FORMER OWNER: SONG GUOYUAN

Effective date: 20081010

TR01 Transfer of patent right

Effective date of registration: 20081010

Address after: Floor 3, building 11, Jiefang North Road, Jiangsu, Xuzhou Province, China: 221000

Patentee after: Xuzhou Yuan Bo Electronic Technology Co., Ltd.

Address before: Dormitory 6-203, Fuxing electric road, Xuzhou, Jiangsu Province, 221000

Patentee before: Song Guoyuan

C56 Change in the name or address of the patentee

Owner name: JIANGSU YU AN TECHNOLOGY CO., LTD.

Free format text: FORMER NAME: XUZHOU YUANBO ELECTRONIC TECHNOLOGY CO., LTD.

CP03 Change of name, title or address

Address after: 5, No. 323, No. 210000, Central Road, Gulou District, Jiangsu, Nanjing

Patentee after: Jiangsu Source Technology Co., Ltd.

Address before: 3 building, 11 business building, Jiefang North Road, Jiangsu, Xuzhou 221000, China

Patentee before: Xuzhou Yuan Bo Electronic Technology Co., Ltd.

EXPY Termination of patent right or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20070822

Termination date: 20140829