CN101718853A - Detecting device and detecting method of single-phase double-loop metering electric energy meter - Google Patents

Detecting device and detecting method of single-phase double-loop metering electric energy meter Download PDF

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Publication number
CN101718853A
CN101718853A CN200910109782A CN200910109782A CN101718853A CN 101718853 A CN101718853 A CN 101718853A CN 200910109782 A CN200910109782 A CN 200910109782A CN 200910109782 A CN200910109782 A CN 200910109782A CN 101718853 A CN101718853 A CN 101718853A
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China
Prior art keywords
electric energy
unit
energy meter
inspected
loop
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Pending
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CN200910109782A
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Chinese (zh)
Inventor
曹锋
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Shenzhen Clou Electronics Co Ltd
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Shenzhen Clou Electronics Co Ltd
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Application filed by Shenzhen Clou Electronics Co Ltd filed Critical Shenzhen Clou Electronics Co Ltd
Priority to CN200910109782A priority Critical patent/CN101718853A/en
Publication of CN101718853A publication Critical patent/CN101718853A/en
Pending legal-status Critical Current

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Abstract

The invention relates to the field of electric energy meter detection, and discloses a detecting device of a single-phase double-loop metering electric energy meter, . The detecting device of the single-phase double-loop metering electric energy meterwhich is characterized by comprising a main control unit, a standard meter, a power source, an error computing unit, a multi-channel voltage isolation mutual inductor and a detected unit; , wherein the main control unit is connected with the power source, the standard meter and the error computing unit; the power source is connected with the standard meter and the detected unit through the multi-channel voltage isolation mutual inductor; the detected unit is connected with the error computing unit; and the power source is provided with two controllable independent current output loops. The invention also provides a detecting method of the single-phase double-loop metering electric energy meter. The invention has the advantages of solving solves the problem that the need of simultaneously providing test currents in two current loops can not be detected when an electricity stealing preventing function of the single-phase double-loop electric energy meter is detected, and perfects perfecting the detection for the electricity stealing preventing function of the single-phase double-loop electric energy meter.

Description

Single-phase double-loop metering electric energy meter calibrating installation and method
Technical field
The present invention relates to the electric energy meter calibration field, particularly a kind of single-phase double-loop metering electric energy meter calibrating installation and method.
Background technology
The electric energy meter of single-phase double-loop metering more and more uses owing to having good anti-electricity-theft performance, but the calibrating of this electric energy meter is than the single-phase electric energy meter complexity of single loop metering.A current measurement circuit is respectively arranged on its UN of the electric energy meter of single-phase double-loop metering and the UL, and the single-phase electric energy meter of single loop metering only has the electric current measurement loop on UL.Can not be simultaneously two current returns of electric energy meter be added the electric current signal simultaneously for the present calibration equipment of the electric energy meter of single-phase double-loop metering, therefore be actually the single-phase electric energy meter that the electric energy meter of single-phase double-loop metering is used as two single loops meterings and examine and determine.But this calibration method can not be examined and determine the anti-electricity-theft operation that the single-phase electric energy meter of double-loop metering when all having electric current in two current returns need be carried out.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of single-phase double-loop metering electric energy meter calibrating installation and method, solve the problem of the anti-electricity-theft operation that the single-phase electric energy meter that can not examine and determine double-loop metering when all having electric current in two current returns in the prior art need carry out.
The present invention solves the technical scheme that the prior art problem adopted: design and make a kind of single-phase double-loop metering electric energy meter calibrating installation, comprise main control unit, standard scale, power source, error calculation unit, plurality of voltages isolation transformer and inspected-unit; Described main control unit is connected with described power source, standard scale and error calculation unit; Described power source passes through the plurality of voltages isolation transformer to the inspected-unit output voltage signal; Described inspected-unit is connected with described error calculation unit; Described power source is provided with two controlled separate current output loops.
The present invention further improves: described two controlled separate current output loops have respectively to the signal of described standard scale and inspected-unit; Described controlled separate current output loop does not influence original function and desired value.
The present invention further improves: described standard scale is provided with one road voltage and two-way current return, and described standard scale provides standard electric energy impulse signal to described error calculation unit.
The present invention further improves: described inspected-unit comprises a described inspected-unit at least; The electric current that described main control unit can be set described inspected-unit is isolated from each other; The current precision that described main control unit can be set described inspected-unit is the required current precision of electric energy meter calibration.
The present invention further improves: described main control unit can be set the amplitude and the phase place of the electric current output of described inspected-unit.
The present invention further improves: described main control unit sends instruction to described power source, standard scale and error calculation unit; Described instruction is the function calibrating instruction of single-phase electric energy meter.
The present invention further improves: described main control unit is provided with the electric current output loop and stops control module; Described electric current output loop stops control module can close or open a separate current output loop in described controlled two separate current output loops.
The present invention provides a kind of single-phase double-loop metering electric energy meter calibration method again, may further comprise the steps: (S1) power source, standard scale and error calculation unit receive the steering order of main control unit and set the corresponding work state; (S2) main control unit is pressed the duty that the examination criteria transmitting control commands is checked inspected-unit; (S3) main control unit generates according to the error calculation unit result calculated and detects qualified and underproof object information.
The present invention further improves: described power source is provided with two controlled separate current output loops; Described power source is respectively to described standard scale and described inspected-unit output separate current signal; Described standard scale is provided with one road voltage and two-way current return; The two-way current return of described standard scale all flows to described inspected-unit, and described standard scale provides standard electric energy impulse signal to error calculation unit.
The present invention further improves: in the described step (S2), the main control unit may command is exported one or two electric current output loops to inspected-unit, and examines and determine to inspected-unit sending function calibrating instruction.
The invention has the beneficial effects as follows: the invention solves the two-circuit single-phase electric energy meter and when anti-stealing electricity function is examined and determine, can not examine and determine the problem that needs to provide simultaneously measuring current in two current returns, the anti-stealing electricity function calibrating of perfect two-circuit single-phase electric energy meter.
Description of drawings
Fig. 1 is a single-phase double-loop metering electric energy meter calibrating installation synoptic diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in Figure 1, a kind of single-phase double-loop metering electric energy meter calibrating installation comprises main control unit, standard scale, power source, error calculation unit, plurality of voltages isolation transformer and inspected-unit; Described main control unit is connected with described power source, standard scale and error calculation unit; Described power source passes through the plurality of voltages isolation transformer to the inspected-unit output voltage signal; Described inspected-unit is connected with described error calculation unit; Described power source is provided with two controlled separate current output loops.Described two controlled separate current output loops have respectively to the signal of described standard scale and inspected-unit; Described controlled separate current output loop does not influence original function and desired value.
Described standard scale is provided with one road voltage and two-way current return, and described standard scale provides standard electric energy impulse signal to described error calculation unit.
Described inspected-unit comprises a described inspected-unit at least; The electric current that described main control unit can be set described inspected-unit is isolated from each other; The current precision that described main control unit can be set described inspected-unit is the required current precision of electric energy meter calibration.
Described main control unit can be set the amplitude and the phase place of the electric current output of described inspected-unit.
Described main control unit sends instruction to described power source, standard scale and error calculation unit; Described instruction is the function calibrating instruction of single-phase electric energy meter.
Described main control unit is provided with the electric current output loop and stops control module; Described electric current output loop stops control module can close or open a separate current output loop in described controlled two separate current output loops.
The present invention provides a kind of single-phase double-loop metering electric energy meter calibration method again, may further comprise the steps: S1 power source, standard scale and error calculation unit receive the steering order of main control unit and set the corresponding work state; The S2 main control unit is pressed the duty that the examination criteria transmitting control commands is checked inspected-unit; The S3 main control unit generates according to the error calculation unit result calculated and detects qualified and underproof object information.
Described power source is provided with two controlled separate current output loops; Described power source is respectively to described standard scale and described inspected-unit output separate current signal; Described standard scale is provided with one road voltage and two-way current return; The two-way current return of described standard scale all flows to described inspected-unit, and described standard scale provides standard electric energy impulse signal to error calculation unit.
Among the described step S2, the main control unit may command is exported one or two electric current output loops to inspected-unit, and examines and determine to inspected-unit sending function calibrating instruction.
In actual verification process, inspected-unit can be different electric energy meters, as the single-phase electric energy meter of single-phase double-loop metering electric energy meter and non-double-loop metering.In verification process, tested electric energy meter adopts man-to-man mode to be connected with error calculation unit, can write down the error of the every index between tested electric energy meter and the standard electric energy meter to guarantee error calculation unit.
In an embodiment of the present invention, in Fig. 1, main control unit (can be server apparatus here, as pc machine etc.) 1 be connected with power source 3, standard electric energy meter 2 and Error Calculator 5, this main control unit sends the PC instruction to described power source 3, standard electric energy meter 2 and Error Calculator 5 simultaneously, to guarantee to finish every calibration operation.Power source 3 provides voltage signal and current signal simultaneously, and to tested electric energy meter 6 output voltage signals, when tested electric energy meter 6 when being a plurality of, this power source 3 will be exported the plurality of voltages signal to described power source 3 simultaneously by plurality of voltages isolation transformer 4.Standard electric energy meter 2 has one road voltage and two-way current return, and this standard electric energy meter 2 can provide standard electric energy impulse signal to Error Calculator 5, like this, just can obtain function, index difference between tested electric energy meter 6 and the standard electric energy meter 2 by Error Calculator 5.Power source 3 has two controlled separate current output loops, current signal 1 as shown in the figure and current signal 2, this each controlled bar separate current output loop has respectively to the signal of standard electric energy meter 2 and tested electric energy meter 6, and this separate current output loop can not influence this and install original function and index.In this device, be isolated from each other at the electric current of each electric energy meter calibration station, simultaneously, this electric current has enough precision to satisfy the accuracy requirement of electric energy meter calibrating apparatus.In verification process, the electric current on each electric energy meter calibration station can be set output amplitude and phase place.
Just can carry out the calibration operation of electric energy meter by the controlled two-way current return of power source, standard scale and corresponding test cell.
When the single-phase electric energy meter of concrete calibrating double-loop metering, main control unit is assigned control command by communication interface and is given power source, standard scale and electric energy error counter, and the corresponding work state is set, and here, main control unit can be PC; Power source, standard scale and electric energy error counter are accepted the PC instruction, and finish every function calibrating of the single-phase electric energy meter of double-loop metering by instruction; PC requires to check according to the detection of the single-phase electric energy meter of double-loop metering whether the single-phase electric energy meter work of double-loop metering correct, Error Calculator will basis of calculation table and tested electric energy meter between error amount; Whether qualified PC provide tested double-loop metering single-phase electric energy meter conclusion according to the examination criteria of the single-phase electric energy meter of double-loop metering, and conclusion is fed back.
Because the electric current output loop of power source is controlled, a current return in two at present controlled separate current output loops can be opened and quits work.Utilize controlled electric current output, this device also can be examined and determine the single-phase electric energy meter of non-double-loop metering.Before calibrating, an electric current output loop is quit work automatically, prevent from can accurately examine and determine the single-phase electric energy meter of this non-double-loop metering like this according to the method for the single-phase electric energy meter of examining and determine double-loop metering because the power source that the current return open circuit causes is protected.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention did, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.

Claims (10)

1. a single-phase double-loop metering electric energy meter calibrating installation is characterized in that, comprises main control unit, standard scale, power source, error calculation unit, plurality of voltages isolation transformer and inspected-unit; Described main control unit is connected with described power source, standard scale and error calculation unit; Described power source passes through the plurality of voltages isolation transformer to the inspected-unit output voltage signal; Described inspected-unit is connected with described error calculation unit; Described power source is provided with two controlled separate current output loops.
2. according to the described single-phase double-loop metering electric energy meter calibrating installation of claim 1, it is characterized in that: described two controlled separate current output loops have respectively to the signal of described standard scale and inspected-unit; Described controlled separate current output loop does not influence original function and desired value.
3. according to the described single-phase double-loop metering electric energy meter calibrating installation of claim 1, it is characterized in that: described standard scale is provided with one road voltage and two-way current return, and described standard scale provides standard electric energy impulse signal to described error calculation unit.
4. according to the described single-phase double-loop metering electric energy meter calibrating installation of claim 1, it is characterized in that: described inspected-unit comprises a described inspected-unit at least; The electric current that described main control unit can be set described inspected-unit is isolated from each other; The current precision that described main control unit can be set described inspected-unit is the required current precision of electric energy meter calibration.
5. according to the described single-phase double-loop metering electric energy meter calibrating installation of claim 1, it is characterized in that: described main control unit can be set the amplitude and the phase place of the electric current output of described inspected-unit.
6. according to the described single-phase double-loop metering electric energy meter calibrating installation of claim 1, it is characterized in that: described main control unit sends instruction to described power source, standard scale and error calculation unit; Described instruction is the function calibrating instruction of single-phase electric energy meter.
7. according to any described single-phase double-loop metering electric energy meter calibrating installation of claim 1-6, it is characterized in that: described main control unit is provided with the electric current output loop and stops control module; Described electric current output loop stops control module can close or open a separate current output loop in described controlled two separate current output loops.
8. single-phase double-loop metering electric energy meter calibration method is characterized in that: may further comprise the steps: (S1) power source, standard scale and error calculation unit receive the steering order of main control unit and set the corresponding work state; (S2) main control unit is pressed the duty that the examination criteria transmitting control commands is checked inspected-unit; (S3) main control unit generates according to the error calculation unit result calculated and detects qualified and underproof object information.
9. described according to Claim 8 single-phase double-loop metering electric energy meter calibration method is characterized in that: described power source is provided with two controlled separate current output loops; Described power source is respectively to described standard scale and described inspected-unit output separate current signal; Described standard scale is provided with one road voltage and two-way current return; The two-way current return of described standard scale all flows to described inspected-unit, and described standard scale provides standard electric energy impulse signal to error calculation unit; Described power source passes through the plurality of voltages isolation transformer to the inspected-unit output voltage signal.
10. according to the described single-phase double-loop metering electric energy meter calibration method of claim 9, it is characterized in that: in the described step (S2), the main control unit may command is exported one or two electric current output loops to inspected-unit, and examines and determine to inspected-unit sending function calibrating instruction.
CN200910109782A 2009-11-20 2009-11-20 Detecting device and detecting method of single-phase double-loop metering electric energy meter Pending CN101718853A (en)

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CN200910109782A CN101718853A (en) 2009-11-20 2009-11-20 Detecting device and detecting method of single-phase double-loop metering electric energy meter

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Application Number Priority Date Filing Date Title
CN200910109782A CN101718853A (en) 2009-11-20 2009-11-20 Detecting device and detecting method of single-phase double-loop metering electric energy meter

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CN101718853A true CN101718853A (en) 2010-06-02

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645644A (en) * 2012-05-16 2012-08-22 北京北研兴电力仪表有限责任公司 Function test device of intelligent electric energy meter
CN102854485A (en) * 2012-09-29 2013-01-02 深圳市亚特尔科技有限公司 Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method
CN105044450A (en) * 2015-03-25 2015-11-11 深圳供电局有限公司 Metering error analysis device and metering error analysis method
CN105572625A (en) * 2015-12-15 2016-05-11 国网辽宁省电力有限公司大连供电公司 Reactive electric energy error automatic checking device
CN106405480A (en) * 2016-10-27 2017-02-15 宁波三星医疗电气股份有限公司 Integrated device and method for adjusting and checking of single-phase electric energy meter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645644A (en) * 2012-05-16 2012-08-22 北京北研兴电力仪表有限责任公司 Function test device of intelligent electric energy meter
CN102854485A (en) * 2012-09-29 2013-01-02 深圳市亚特尔科技有限公司 Automated adjustment system for comprehensive multi-parameter electrical measuring instrument and adjustment method
CN105044450A (en) * 2015-03-25 2015-11-11 深圳供电局有限公司 Metering error analysis device and metering error analysis method
CN105572625A (en) * 2015-12-15 2016-05-11 国网辽宁省电力有限公司大连供电公司 Reactive electric energy error automatic checking device
CN106405480A (en) * 2016-10-27 2017-02-15 宁波三星医疗电气股份有限公司 Integrated device and method for adjusting and checking of single-phase electric energy meter

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Application publication date: 20100602