CN204946702U - A kind of Multichannel isolating voltage instrument transformer with compensation - Google Patents
A kind of Multichannel isolating voltage instrument transformer with compensation Download PDFInfo
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- CN204946702U CN204946702U CN201520686351.2U CN201520686351U CN204946702U CN 204946702 U CN204946702 U CN 204946702U CN 201520686351 U CN201520686351 U CN 201520686351U CN 204946702 U CN204946702 U CN 204946702U
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- iron core
- secondary coil
- coil
- main coil
- compensation
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Abstract
The utility model discloses a kind of Multichannel isolating voltage instrument transformer with compensation, comprise the first iron core, second iron core, main coil and secondary coil, described first iron core, second iron core is annular core, described first iron core is identical with the cross-sectional area of the second iron core, the quantity of described main coil is 1, around on the first iron core, the quantity of described secondary coil is 3, simultaneously around on the first iron core and the second iron core, described main coil is identical with the number of turn of each secondary coil, turn ratio is 1: 1, the high-pressure side of described main coil, low-pressure end respectively with the high-pressure side of one of them secondary coil, low-pressure end is connected in parallel, the wire of described main coil is thin compared with the wire of secondary coil.The utility model is rational in infrastructure, adopt Crossed Circle iron core and input, output doubling mode, the output of isolated voltage transformer and input terminal voltage are consistent, multiple-channel output error is made to be no more than 2/100000ths, greatly reduce the measure error of electric energy meter, improve the reliability of electric energy meter metering.
Description
[technical field]
The utility model relates to the technical field that electric energy meter detects, particularly a kind of Multichannel isolating voltage instrument transformer with compensation.
[background technology]
Along with the development of electric energy meter technology, new requirement is proposed to the detection of detection device of electric energy meter and electric energy meter, electric energy meter is as the important measurement instrument of trade settlement, extensive use in industrial and agricultural production and daily life, whether its accurate measurement is directly connected to the vital interests for electricity consumption both sides, be the great measurement problem involved the interests of the state and the people, directly affect the stable of society and harmonious development.According to the survey, in actual service condition, what electric energy metering error had the greatest impact is not the error of electric energy meter own to root, but is that the error that instrument transformer brings is maximum.
Voltage transformer; be called for short PT; have a very important role in detection device of electric energy meter; the object of voltage transformer voltage of transformation; mainly be used for powering to measuring instrument and protective relaying device; be used for the voltage of measurement circuitry, power and electric energy, or be used for expensive equipment, motor and the transformer when line failure in protection circuit, and the precision of voltage transformer directly affects the measuring accuracy of electric energy meter.
At present, in the detection of electric energy meter, need the voltage of each electric energy meter to isolate, and magnitude of voltage and phase place must be consistent.But in testing process, due to the problem of installation site, wiring and load variations, cause the input of isolated voltage transformer and the inconsistent of output, cause the inaccurate of electric energy meter metrology and measurement, for improving the measuring accuracy of electric energy meter and the degree accurately and reliably of metering, be necessary to propose a kind of Multichannel isolating voltage instrument transformer with compensation.
[utility model content]
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of Multichannel isolating voltage instrument transformer with compensation is provided, its be intended to solve the input of isolated voltage transformer in test in prior art and output end voltage inconsistent, the technical problem that the measuring accuracy of electric energy meter is low, metrology and measurement accuracy is low.
For achieving the above object, the utility model proposes a kind of Multichannel isolating voltage instrument transformer with compensation, comprise the first iron core, second iron core, main coil and secondary coil, described first iron core, second iron core is annular core, described first iron core is identical with the cross-sectional area of the second iron core, the quantity of described main coil is 1, around on the first iron core, the quantity of described secondary coil is 3, simultaneously around on the first iron core and the second iron core, described main coil is identical with the number of turn of each secondary coil, turn ratio is 1:1, the high-pressure side of described main coil, low-pressure end respectively with the high-pressure side of one of them secondary coil, low-pressure end is connected in parallel, the wire of described main coil is thin compared with the wire of secondary coil.
As preferably, the cross sectional shape of described first iron core, the second iron core can be rectangle, also can be circle.
As preferably, the size of described first iron core is greater than the size of the second iron core.
As preferably, described 3 secondary coils are in parallel around on the first iron core and the second iron core.
As preferably, the wire thickness of described 3 secondary coils is identical.
The beneficial effects of the utility model: compared with prior art, a kind of Multichannel isolating voltage instrument transformer with compensation that the utility model provides, rational in infrastructure, adopt Crossed Circle iron core and input, export doubling mode, the high-pressure side of main coil, low-pressure end respectively with the high-pressure side of one of them secondary coil, low-pressure end is in parallel, ensure that electric phase place is consistent, after main coil transformation to secondary coil, due to installation site, the factor impacts such as wiring and load variations, the output end voltage of isolated voltage transformer is caused to change, cause the magnetic flux change of secondary coil, and adopt main coil around on an iron core of Crossed Circle iron core, 3 secondary coils are in parallel around the mode on Crossed Circle iron core, and main and sub-coil turn ratio is 1:1, the change of magnetic flux can be offset, thus the output of isolated voltage transformer and input terminal voltage are consistent, make multiple-channel output (100V ~ 240V, power 5VA ~ 100VA) error be no more than 2/100000ths, greatly reduce the measure error of electric energy meter, improve the reliability of electric energy meter metering.
Feature of the present utility model and advantage will be described in detail by reference to the accompanying drawings by embodiment.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of a kind of Multichannel isolating voltage instrument transformer with compensation of the utility model.
In figure: 1-first iron core, 2-second iron core, 3-main coil, 4-secondary coil.
[embodiment]
For making the purpose of this utility model, technical scheme and advantage clearly understand, below by accompanying drawing and embodiment, the utility model is further elaborated.But should be appreciated that, specific embodiment described herein, only in order to explain the utility model, is not limited to scope of the present utility model.In addition, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring concept of the present utility model.
Consult Fig. 1, the utility model embodiment provides a kind of Multichannel isolating voltage instrument transformer with compensation, comprise the first iron core 1, second iron core 2, main coil 3 and secondary coil 4, described first iron core 1, second iron core 2 is annular core, the quantity of described main coil 3 is 1, around on the first iron core 1, the quantity of described secondary coil 4 is 3, simultaneously around on the first iron core 1 and the second iron core 2, described main coil 3 is identical with the number of turn of each secondary coil 4, turn ratio is 1:1, and the wire of described main coil 3 is thin compared with the wire of secondary coil 4.
Further, the high-pressure side of described main coil 3, low-pressure end are connected in parallel with the high-pressure side of one of them secondary coil 4, low-pressure end respectively, ensure that electric phase place is consistent, prevent detecting instrument impaired, protect the safety of personnel simultaneously.
Further, the size of described first iron core 1 is greater than the size of the second iron core 2, first iron core 1 is identical with the cross-sectional area of the second iron core 2, 3 secondary coils 4 are in parallel around on the first iron core 1 and the second iron core 2, the wire thickness of 3 secondary coils 4 is identical, solve due to installation site, the factors such as wiring and load variations cause the output end voltage of isolated voltage transformer to change, cause the problem of the magnetic flux change of secondary coil, main coil 3 can offset separately the change of magnetic flux on an iron core, ensure that output end voltage and the input of isolated voltage transformer are consistent, make multiple-channel output (100V ~ 240V, power 5VA ~ 100VA) error be no more than 2/100000ths, reduce the error in dipping of electric energy meter, improve the accuracy of electric energy meter metering.
Particularly, the cross sectional shape of described first iron core 1, second iron core 2 can be rectangle, also can be circle, provides convenience, improve installation and efficiency of construction for installing and constructing.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace or improvement etc., all should be included within protection range of the present utility model.
Claims (5)
1. the Multichannel isolating voltage instrument transformer with compensation, comprise the first iron core (1), second iron core (2), main coil (3) and secondary coil (4), it is characterized in that: described first iron core (1), second iron core (2) is annular core, described first iron core (1) is identical with the cross-sectional area of the second iron core (2), the quantity of described main coil (3) is 1, around on the first iron core (1), the quantity of described secondary coil (4) is 3, simultaneously around on the first iron core (1) and the second iron core (2), described main coil (3) is identical with the number of turn of each secondary coil (4), turn ratio is 1:1, the high-pressure side of described main coil (3), low-pressure end respectively with the high-pressure side of one of them secondary coil (4), low-pressure end is connected in parallel, the wire of the wire of described main coil (3) comparatively secondary coil (4) is thin.
2. a kind of Multichannel isolating voltage instrument transformer with compensation as claimed in claim 1, is characterized in that: the cross sectional shape of described first iron core (1), the second iron core (2) can be rectangle, also can be circle.
3. a kind of Multichannel isolating voltage instrument transformer with compensation as claimed in claim 1, is characterized in that: the size of described first iron core (1) is greater than the size of the second iron core (2).
4. a kind of Multichannel isolating voltage instrument transformer with compensation as claimed in claim 1, is characterized in that: described 3 secondary coils (4) are in parallel around on the first iron core (1) and the second iron core (2).
5. a kind of Multichannel isolating voltage instrument transformer with compensation as claimed in claim 1, is characterized in that: the wire thickness of described 3 secondary coils (4) is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686351.2U CN204946702U (en) | 2015-09-07 | 2015-09-07 | A kind of Multichannel isolating voltage instrument transformer with compensation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520686351.2U CN204946702U (en) | 2015-09-07 | 2015-09-07 | A kind of Multichannel isolating voltage instrument transformer with compensation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204946702U true CN204946702U (en) | 2016-01-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520686351.2U Expired - Fee Related CN204946702U (en) | 2015-09-07 | 2015-09-07 | A kind of Multichannel isolating voltage instrument transformer with compensation |
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| Country | Link |
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| CN (1) | CN204946702U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424815A (en) * | 2017-08-18 | 2017-12-01 | 陈宇斯 | A kind of two-stage current transformer compensated using circle is subtracted |
| CN113109753A (en) * | 2021-03-12 | 2021-07-13 | 中国电力科学研究院有限公司 | Method and system for compensating turn number of electromagnetic current transformer |
-
2015
- 2015-09-07 CN CN201520686351.2U patent/CN204946702U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424815A (en) * | 2017-08-18 | 2017-12-01 | 陈宇斯 | A kind of two-stage current transformer compensated using circle is subtracted |
| CN107424815B (en) * | 2017-08-18 | 2019-04-30 | 陈宇斯 | A kind of two-stage current transformer compensated using circle is subtracted |
| CN113109753A (en) * | 2021-03-12 | 2021-07-13 | 中国电力科学研究院有限公司 | Method and system for compensating turn number of electromagnetic current transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20210907 |