CN109001666A - Output device while a kind of realization different electric currents using current transformer - Google Patents
Output device while a kind of realization different electric currents using current transformer Download PDFInfo
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- CN109001666A CN109001666A CN201811019960.7A CN201811019960A CN109001666A CN 109001666 A CN109001666 A CN 109001666A CN 201811019960 A CN201811019960 A CN 201811019960A CN 109001666 A CN109001666 A CN 109001666A
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- current
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- current transformer
- energy meter
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/04—Testing or calibrating of apparatus covered by the other groups of this subclass of instruments for measuring time integral of power or current
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- General Physics & Mathematics (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Abstract
The invention discloses output devices while a kind of realization different electric currents using current transformer, including current source and several current transformers, the first side winding and current source of several current transformers pass through conducting wire current loop in series, the secondary side winding of each current transformer has different no-load voltage ratios by conducting wire connection corresponding with single-phase electric energy meter to be verified, several current transformers.Output device while a kind of different electric currents of realization using current transformer of the invention, the output of different size of current under same current source is realized using the current transformer of different no-load voltage ratios, in test and debugging checking procedure, it only needs to connect single-phase electric energy meter to be verified on the current transformer of different electric currents output, realization does not need lifting current source on same device, it is just able to satisfy the demand of different current point adjustment, the verification efficiency of electric energy meter is helped to improve, improves the production efficiency of electric energy meter.
Description
[technical field]
The present invention relates to the technical fields of single-phase electric energy meter verification, in particular to a kind of to realize difference using current transformer
Output device while electric current.
[background technique]
Single-phase electric energy meter is applied to active electrical degree meter amount, accurate measurement and modularization small size, can easily be mounted on
In all kinds of terminal distribution boxs.Single-phase electric energy meter needs to dispatch from the factory after debugging verification qualification up to standard after manufacture.Single-phase
In the verification of electric energy meter, current loop is using series system, therefore the size of current of each epitope and phase are consistent.But
It is in practical applications, in the debugging verification of especially electric energy meter accuracy, to need in different current point adjustment.And it adopts at present
Cause production efficiency relatively low to realize different current point adjustment with the mode of lifting current source.In order to solve above ask
Topic, it is necessary to propose output device while a kind of realization different electric currents using current transformer.
[summary of the invention]
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, provide a kind of different using current transformer realization
Output device while electric current aims to solve the problem that in the prior art by the way of going up and down current source, to realize different electric currents
Point adjustment, leads to the technical problem that production efficiency is relatively low.
To achieve the above object, the invention proposes output dresses while a kind of realization different electric currents using current transformer
It sets, including current source and several current transformers, the first side winding of several current transformers is with current source by leading
The secondary side winding of line current loop in series, each current transformer passes through conducting wire and single-phase electric energy to be verified
The corresponding connection of table, several current transformers have different no-load voltage ratios.
Preferably, the no-load voltage ratio of the current transformer by single-phase electric energy meter to be verified adjustment current point size with
Current source exports size of current and determines.
Preferably, when the output size of current of current source is x, the adjustment current point size of single-phase electric energy meter to be verified
Respectively y1、y2、y3…ynWhen, then obtain y1、y2、y3…ynThe change of current transformer corresponding to the single-phase electric energy meter of current value
Than being respectively
Preferably, the x and y1、y2、y3…ynBeing all made of A is unit, and wherein n is quantity, by different adjustment electric currents
The quantity of point determines.
Preferably, the quantity of the current transformer, which is no less than single-phase electric energy meter, needs the quantity of adjustment current point.
Beneficial effects of the present invention: compared with prior art, it is provided by the invention it is a kind of using current transformer realize not
With output device while electric current, different size of current under same current source are realized using the current transformer of different no-load voltage ratios
Output, in test and debugging checking procedure, it is only necessary to it is mutual that single-phase electric energy meter to be verified be connect to the electric current exported in different electric currents
On sensor, realization does not need lifting current source on same device, is just able to satisfy the demand of different current point adjustment, helps to mention
The verification efficiency of high electric energy meter, improves the production efficiency of electric energy meter.
Feature and advantage of the invention will be described in detail by embodiment combination attached drawing.
[Detailed description of the invention]
The principle of Fig. 1 is that the embodiment of the present invention is a kind of while realize different electric currents using current transformer output device
Figure.
Fig. 2 is that the embodiment of the present invention is a kind of while realize different electric currents using current transformer output device is to different
Current point carries out calibration apparatus schematic diagram
In figure: 1- current source, 2- current transformer, 3- single-phase electric energy meter.
[specific embodiment]
In order to make the objectives, technical solutions and advantages of the present invention clearer, below by accompanying drawings and embodiments, to this
Invention is further elaborated.However, it should be understood that the specific embodiments described herein are merely illustrative of the present invention,
The range being not intended to restrict the invention.In addition, in the following description, descriptions of well-known structures and technologies are omitted, to keep away
Exempt from unnecessarily to obscure idea of the invention.
Refering to fig. 1, the output device while embodiment of the present invention provides a kind of realization different electric currents using current transformer,
Including current source 1 and several current transformers 2, the first side winding of several current transformers 2 is with current source 1 by leading
The secondary side winding of line current loop in series, each current transformer 2 passes through conducting wire and single-phase electricity to be verified
The energy corresponding connection of table 3, several current transformers 2 have different no-load voltage ratios.
Further, the no-load voltage ratio of the current transformer 2 by single-phase electric energy meter 3 to be verified adjustment current point size
Size of current is exported with current source 1 to determine.When the output size of current of current source 1 is x, the tune of single-phase electric energy meter 3 to be verified
School current point size is respectively y1、y2、y3…ynWhen, then obtain y1、y2、 y3…ynCorresponding to the single-phase electric energy meter 3 of current value
The no-load voltage ratio of current transformer 2 is respectively
Wherein, the x and y1、y2、y3…ynBeing all made of A is unit, and n is quantity, by the quantity of different adjustment current points
It determines.
Further, the quantity of the current transformer 2, which is no less than single-phase electric energy meter 3, needs the number of adjustment current point
Amount.
Specific embodiment:
Referring to Fig.2, in calibration procedures, need to carry out adjustment in 3 different current points, respectively 5A, 1A and
0.5A selects 3 current transformers 2 to connect with current source 1, in the case of 1 actual output current of current source is 5A, design
The no-load voltage ratio of 3 current transformers 2 is respectively 1:1,5:1,10:1, can obtain the electric current of 5A, 1A and 0.5A size of same-phase.
Output device while a kind of different electric currents of realization using current transformer of the invention, using the electric current of different no-load voltage ratios
Mutual inductor realizes under same current source the output of different size of current, in test and debugging checking procedure, it is only necessary to will be to school
The single-phase electric energy meter 3 tested connects on the current transformer 2 of different electric currents output, and realization does not need lifting electric current on same device
Source is just able to satisfy the demand of different current point adjustment, helps to improve the verification efficiency of electric energy meter, improves the production effect of electric energy meter
Rate.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modification, equivalent replacement or improvement etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (5)
1. a kind of output device while realize different electric currents using current transformer, it is characterised in that: including current source (1) and
The first side winding of several current transformers (2), several current transformers (2) is connected with current source (1) by conducting wire
Current loop is constituted, the secondary side winding of each current transformer (2) passes through conducting wire and single-phase electric energy meter to be verified
(3) corresponding connection, several current transformers (2) have different no-load voltage ratios.
2. output device while a kind of different electric currents of realization using current transformer as described in claim 1, feature exist
In: the no-load voltage ratio of the current transformer (2) by the adjustment current point size and current source of single-phase electric energy meter (3) to be verified
(1) output size of current determines.
3. output device while a kind of different electric currents of realization using current transformer as claimed in claim 2, feature exist
In: when the output size of current of current source (1) is x, the adjustment current point size of single-phase electric energy meter to be verified (3) is respectively
y1、y2、y3…ynWhen, then obtain y1、y2、y3…ynThe change of current transformer (2) corresponding to the single-phase electric energy meter (3) of current value
Than being respectively
4. output device while a kind of different electric currents of realization using current transformer as claimed in claim 3, feature exist
In: the x and y1、y2、y3…ynBeing all made of A is unit, and wherein n is quantity, is determined by the quantity of different adjustment current points.
5. output device while a kind of different electric currents of realization using current transformer as described in claim 1, feature exist
In: the quantity of the current transformer (2), which is no less than single-phase electric energy meter (3), needs the quantity of adjustment current point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019960.7A CN109001666A (en) | 2018-09-03 | 2018-09-03 | Output device while a kind of realization different electric currents using current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811019960.7A CN109001666A (en) | 2018-09-03 | 2018-09-03 | Output device while a kind of realization different electric currents using current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109001666A true CN109001666A (en) | 2018-12-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811019960.7A Pending CN109001666A (en) | 2018-09-03 | 2018-09-03 | Output device while a kind of realization different electric currents using current transformer |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907729A (en) * | 2019-11-29 | 2020-03-24 | 科大智能电气技术有限公司 | Power equipment testing method based on active compensation mutual inductor and three-phase source |
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| CN2685896Y (en) * | 2003-11-06 | 2005-03-16 | 高其能 | High precision electronic current lift for electric energy meter checking equipment |
| CN203324466U (en) * | 2013-05-08 | 2013-12-04 | 广东电网公司电力科学研究院 | Verification system capable of verifying multiple electric-energy meters with different current specifications at the same time |
| CN106597351A (en) * | 2016-11-18 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Electric energy meter verification device online real-time monitoring realization method |
| CN206757027U (en) * | 2017-04-14 | 2017-12-15 | 国网四川省电力公司电力科学研究院 | Live virtual load calibration equipment based on empty electric current device |
| CN208999555U (en) * | 2018-09-03 | 2019-06-18 | 海盐星创电子有限公司 | Output device while a kind of realization different electric currents using current transformer |
-
2018
- 2018-09-03 CN CN201811019960.7A patent/CN109001666A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2685896Y (en) * | 2003-11-06 | 2005-03-16 | 高其能 | High precision electronic current lift for electric energy meter checking equipment |
| CN203324466U (en) * | 2013-05-08 | 2013-12-04 | 广东电网公司电力科学研究院 | Verification system capable of verifying multiple electric-energy meters with different current specifications at the same time |
| CN106597351A (en) * | 2016-11-18 | 2017-04-26 | 云南电网有限责任公司电力科学研究院 | Electric energy meter verification device online real-time monitoring realization method |
| CN206757027U (en) * | 2017-04-14 | 2017-12-15 | 国网四川省电力公司电力科学研究院 | Live virtual load calibration equipment based on empty electric current device |
| CN208999555U (en) * | 2018-09-03 | 2019-06-18 | 海盐星创电子有限公司 | Output device while a kind of realization different electric currents using current transformer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110907729A (en) * | 2019-11-29 | 2020-03-24 | 科大智能电气技术有限公司 | Power equipment testing method based on active compensation mutual inductor and three-phase source |
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