CN203324466U - Verification system capable of verifying multiple electric-energy meters with different current specifications at the same time - Google Patents
Verification system capable of verifying multiple electric-energy meters with different current specifications at the same time Download PDFInfo
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- CN203324466U CN203324466U CN2013202432509U CN201320243250U CN203324466U CN 203324466 U CN203324466 U CN 203324466U CN 2013202432509 U CN2013202432509 U CN 2013202432509U CN 201320243250 U CN201320243250 U CN 201320243250U CN 203324466 U CN203324466 U CN 203324466U
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Abstract
The utility model discloses a verification system capable of verifying multiple electric-energy meters with different specifications at the same time, and the system comprises a power supply device, a current transformer, a voltage transformer, standard electric-energy meters, and photoelectric samplers. The current transformer and the voltage transformer are respectively connected with the power supply device. Each of the standard electric-energy meters is connected with the current transformer and the voltage transformer. Each of the photoelectric samplers is correspondingly connected with one of the standard electric-energy meters or one of verified electric-energy meters. The verification system also comprises an industrial personal computer and a plurality of multi-transformation ratio current-transformer automatic-switching devices. Each of the plurality of multi-transformation ratio current-transformer automatic-switching devices is connected with the power supply device. The industrial personal computer is connected with the plurality of multi-transformation ratio current-transformer automatic-switching devices. The output end of each of the photoelectric samplers is connected with the industrial personal computer. The industrial personal computer receives the outputs of the photoelectric samplers to complete the comparison of the standard electric-energy meters with the verified electric-energy meters. The verification system provided by the utility model can carry out unified verification of multiple electric-energy meters with different current specifications at the same time.
Description
Technical field
The utility model relates to field of measuring techniques, is specifically related to the Calibration Technology field of electric energy meter.
Background technology
Growing along with national economy, all trades and professions constantly increase electric demand.Electric energy meter is the core that in electric power meter, quantity is maximum, impact is the widest, bearing and measuring the responsibility that load consumption or power supply send electric energy, it is the Main Basis of settlement of transactions and the examination of intra-company economy between grid company and client and electricity power enterprise, to guarantee the electricity market fair, just and open, safeguard the main power equipment of electricity transaction both sides legitimate rights and interests, in whole power grid enterprises, effect is extremely important.
In prior art, can only to the electric energy meter of a plurality of specifications of the same race, be examined and determine simultaneously, electric energy meter in the face of different current specification, how to realize numerous electric energy meters with different current specification are examined and determine simultaneously, in order to greatly improve the efficiency of electric energy meter calibration, it is the problem that the utility model will be inquired into.
The utility model content
The utility model is examined and determine a plurality of problems with error in dipping of different current specification electric energy meters for being difficult in prior art simultaneously, a set of complete detection system is provided, this system can be simultaneously has different current specification electric energy meters and is unified calibrating a plurality of, can evaluate and test quickly and efficiently the error in dipping of various current specification electric energy meters, thereby effectively improve the calibrating efficiency of electric energy meter.
The technical scheme in the invention for solving the technical problem is as follows: a kind ofly can examine and determine a plurality of verification systems with different current specification electric energy meters simultaneously, comprise electric supply installation, current transformer, voltage transformer (VT), standard electric energy meter and photoelectric sampler, described voltage transformer (VT) summation current transformer is connected with described electric supply installation respectively, standard electric energy meter is connected with described voltage transformer (VT) summation current transformer, obtain the required voltage and current of work by described voltage transformer (VT) summation current transformer, a corresponding standard electric energy meter or the tested electric energy meter of connecting of each described photoelectric sampler, convert the light signal of electric energy meter output to electric impulse signal output, it is characterized in that, described verification system also comprises industrial computer and a plurality of variable specific current transformer automatic switching control equipment, described variable specific current transformer automatic switching control equipment is connected with described electric supply installation, described industrial computer is connected with described variable specific current transformer automatic switching control equipment, industrial computer is controlled the setting of variable specific current transformer automatic switching control equipment no-load voltage ratio, make electric supply installation adapt to the needs of the tested electric energy meter of different current specification by the electric current of described variable specific current transformer automatic switching control equipment output different size, described industrial computer also is connected with described electric supply installation, control output voltage and the electric current of electric supply installation, the output terminal of described photoelectric sampler is connected with described industrial computer, while being examined and determine, the voltage input end of tested electric energy meter is connected with the output terminal of described voltage transformer (VT), the current input terminal of each tested electric energy meter is connected respectively a variable specific current transformer automatic switching control equipment, make tested electric energy meter obtain the required voltage and current of work by described voltage transformer (VT) and variable specific current transformer automatic switching control equipment, the error ratio that the electric impulse signal that described industrial computer receives the output of described photoelectric sampler completes standard electric energy meter and tested electric energy meter.
Described electric supply installation consists of AC voltage-stabilizing source and power source, and the AC voltage-stabilizing source provides stable power supply for power source, and described industrial computer is connected with described power source, its output voltage and electric current of controller.
Described variable specific current transformer automatic switching control equipment is comprised of connected successively sample circuit, selection circuit, driving circuit and commutation circuit.
Described verification system also comprises the peripheral hardwares such as central processing unit and printer, and described industrial computer is by communication interface and described central processing unit communication, and printer is connected with described central processing unit, in order to print verification result.
The utility model also comprises for placing the multi-epitope meter hanging frame of tested electric energy meter.
The utlity model has following beneficial effect: the utility model adopts the variable specific current transformer automatic switching control equipment, can be by controlling the no-load voltage ratio of variable specific current transformer automatic switching control equipment, export the electric current of multiple different size, in order to supply with a plurality of electric energy meters with different current specification, thereby make verification system of the present utility model be unified calibrating to a plurality of electric energy meters with different current specification simultaneously, greatly improve the efficiency of electric energy meter error calibrating, also improved the utilization factor of verification system; The utility model consists of a plurality of independently devices, without equipment newly developed, has both guaranteed the dirigibility of device, provides cost savings again; The utility model adopts the relative method of standard to complete error testing, has effectively guaranteed accuracy and the reliability of verification system; The utility model can be realized detecting, data are processed, examining report is printed and automatically completed.
The accompanying drawing explanation
Fig. 1 is the structural drawing of the utility model specific embodiment;
Fig. 2 is the process flow diagram of the utility model specific embodiment;
Fig. 3 is the ultimate principle figure of the utility model variable specific current transformer automatic switching control equipment.
Embodiment
Below in conjunction with drawings and Examples, to of the present utility model, can examine and determine a plurality of verification systems with different current specification electric energy meters simultaneously and be further described.Following examples, should be as the restriction to the utility model concrete structure only for the utility model is described.
As shown in Figure 1, 2, according to " the common three phases electronic energy meter technical manual of China Nanfang Grid Co., Ltd " in southern net electric energy meter technical standard relevant clause, common three phases electronic energy meter mainly contains following several current specification: 5 (30) A, 10 (60) A, 20 (80) A, 1 (10) A, in following examples, tested electric energy is four electric energy meters with above-mentioned current specification.
The AC voltage-stabilizing source is connected with power source, and the two forms the electric supply installation of verification system.The AC voltage-stabilizing source provides stable three-phase voltage U A, UB, UC for power source.Controller, the present embodiment middle controller is an industrial computer, its control end is connected with power source, for power source is regulated, controlled, makes error-detecting point output corresponding voltage, the electric current of power source according to program setting.
Suppose that now the check point electric current is Ib, the power source output current is exported according to the value of current specification the maximum in electric energy meter, i.e. power source output 20A electric current.Current Transmit, voltage transformer pt are once held respectively and are connected with power source, secondary terminals connection standard electric energy meter.The secondary terminals of voltage transformer pt also with being connected of tested electric energy meter.Tested electric energy meter all is placed on the multi-epitope meter hanging frame, in order to make whole verification system cleaner and tidier.
The current input terminal of tested electric energy meter is connected with power source by the variable specific current transformer automatic switching control equipment, and each tested electric energy meter need configure a variable specific current transformer automatic switching control equipment.The control end of variable specific current transformer automatic switching control equipment is connected with controller, by controller, the no-load voltage ratio of variable specific current transformer automatic switching control equipment is controlled.As current specification is respectively to the tested electric energy meter of 5 (30) A, 10 (60) A, 20 (80) A, 1 (10) A, controlling respectively its no-load voltage ratio is: 20:5,20:10,20:20,20:1, be 4:1,2:1,1:1,20:1, can guarantee that like this electric energy meter of different current specification can complete calibrating at the Ib check point in same verification system simultaneously.
The tested electric energy meter of different current specification and standard electric energy meter are sampled to voltage, the electric current of power source output simultaneously, and the system-computed by separately goes out the electric energy value.The tested electric energy meter of different current specification and standard electric energy meter be, simultaneously sampling independent by photoelectric sampler respectively, the light signal of their output is converted to the form of electric pulse, is sent to the Error Calculator in controller.Error Calculator is carried out the frequency division processing according to the no-load voltage ratio setting of the variable specific current transformer automatic switching control equipment of corresponding tested electric energy meter, be that electrical energy pulse is counted the N/ no-load voltage ratio, again the umber of pulse of the umber of pulse of each tested electric energy meter and standard electric energy meter is compared, thereby calculate error amount.
Controller also is connected with central processing unit by communication interface, the error information of measurement is passed to central processing unit, also can be used as type approval test by the peripheral hardware that is connected with central processing unit as printer prints last result, the test data of dispatch from the factory test, on-the-spot test etc.
Fig. 3 is the ultimate principle figure of the utility model variable specific current transformer automatic switching control equipment, and as shown in the figure, the variable specific current transformer automatic switching control equipment is comprised of connected successively sample circuit, selection circuit, driving circuit and commutation circuit.The input end of sample circuit is connected with power source, the control end of sample circuit is connected with controller, receive the order that controller sends, select the instruction of circuit according to sample circuit, for whole variable specific current transformer automatic switching control equipment is selected suitable no-load voltage ratio, driving circuit drives the commutation circuit action, completes the switching of whole variable specific current transformer automatic switching control equipment no-load voltage ratio.The output terminal of commutation circuit is connected with corresponding tested electric energy meter.
Claims (5)
1. can examine and determine a plurality of verification systems with different current specification electric energy meters for one kind simultaneously, comprise electric supply installation, current transformer, voltage transformer (VT), standard electric energy meter and photoelectric sampler, described voltage transformer (VT) summation current transformer is connected with described electric supply installation respectively, standard electric energy meter is connected with described voltage transformer (VT) summation current transformer, obtain the required voltage and current of work by described voltage transformer (VT) summation current transformer, a corresponding standard electric energy meter or the tested electric energy meter of connecting of each described photoelectric sampler, convert the light signal of electric energy meter output to electric impulse signal output, it is characterized in that, described verification system also comprises industrial computer and a plurality of variable specific current transformer automatic switching control equipment, described variable specific current transformer automatic switching control equipment is connected with described electric supply installation, described industrial computer is connected with described variable specific current transformer automatic switching control equipment, industrial computer is controlled the setting of variable specific current transformer automatic switching control equipment no-load voltage ratio, make electric supply installation adapt to the needs of the tested electric energy meter of different current specification by the electric current of described variable specific current transformer automatic switching control equipment output different size, described industrial computer also is connected with described electric supply installation, control output voltage and the electric current of electric supply installation, the output terminal of described photoelectric sampler is connected with described industrial computer, while being examined and determine, the voltage input end of tested electric energy meter is connected with the output terminal of described voltage transformer (VT), the current input terminal of each tested electric energy meter is connected respectively a variable specific current transformer automatic switching control equipment, make tested electric energy meter obtain the required voltage and current of work by described voltage transformer (VT) and variable specific current transformer automatic switching control equipment, the error ratio that the electric impulse signal that described industrial computer receives the output of described photoelectric sampler completes standard electric energy meter and tested electric energy meter.
2. according to claim 1ly can examine and determine a plurality of verification systems with different current specification electric energy meters simultaneously, it is characterized in that, described electric supply installation consists of AC voltage-stabilizing source and power source, the AC voltage-stabilizing source provides stable power supply for power source, described industrial computer is connected with described power source, its output voltage and electric current of controller.
3. according to claim 1ly can examine and determine a plurality of verification systems with different current specification electric energy meters simultaneously, it is characterized in that, described variable specific current transformer automatic switching control equipment is comprised of connected successively sample circuit, selection circuit, driving circuit and commutation circuit.
4. can examine and determine a plurality of verification systems with different current specification electric energy meters according to the claims 1 to 3 any one is described simultaneously, it is characterized in that, described verification system also comprises central processing unit and printer, described industrial computer is by communication interface and described central processing unit communication, and printer is connected with described central processing unit.
5. according to claim 1ly can examine and determine a plurality of verification systems with different current specification electric energy meters simultaneously, it is characterized in that, described verification system also comprises for placing the multi-epitope meter hanging frame of tested electric energy meter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013202432509U CN203324466U (en) | 2013-05-08 | 2013-05-08 | Verification system capable of verifying multiple electric-energy meters with different current specifications at the same time |
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| CN2013202432509U CN203324466U (en) | 2013-05-08 | 2013-05-08 | Verification system capable of verifying multiple electric-energy meters with different current specifications at the same time |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199486A (en) * | 2016-06-27 | 2016-12-07 | 山东省计量科学研究院 | A kind of measurement system of power meter temperature impact test |
| CN106501761A (en) * | 2016-12-26 | 2017-03-15 | 烟台东方威思顿电气股份有限公司 | Three-phase intelligent electric-energy meter simulation detection system |
| CN107807345A (en) * | 2017-11-13 | 2018-03-16 | 国家电网公司 | A kind of Three Phase Alternating-current Electrical Energy Meters verification system and method |
| CN109001666A (en) * | 2018-09-03 | 2018-12-14 | 海盐星创电子有限公司 | Output device while a kind of realization different electric currents using current transformer |
| CN113933558A (en) * | 2021-10-13 | 2022-01-14 | 江苏斯菲尔电气股份有限公司 | Instrument capable of automatically identifying specification of current transformer and setting transformation ratio |
-
2013
- 2013-05-08 CN CN2013202432509U patent/CN203324466U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199486A (en) * | 2016-06-27 | 2016-12-07 | 山东省计量科学研究院 | A kind of measurement system of power meter temperature impact test |
| CN106501761A (en) * | 2016-12-26 | 2017-03-15 | 烟台东方威思顿电气股份有限公司 | Three-phase intelligent electric-energy meter simulation detection system |
| CN107807345A (en) * | 2017-11-13 | 2018-03-16 | 国家电网公司 | A kind of Three Phase Alternating-current Electrical Energy Meters verification system and method |
| CN109001666A (en) * | 2018-09-03 | 2018-12-14 | 海盐星创电子有限公司 | Output device while a kind of realization different electric currents using current transformer |
| CN113933558A (en) * | 2021-10-13 | 2022-01-14 | 江苏斯菲尔电气股份有限公司 | Instrument capable of automatically identifying specification of current transformer and setting transformation ratio |
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