CN102779637A - Combined power transformer - Google Patents
Combined power transformer Download PDFInfo
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- CN102779637A CN102779637A CN2012102893628A CN201210289362A CN102779637A CN 102779637 A CN102779637 A CN 102779637A CN 2012102893628 A CN2012102893628 A CN 2012102893628A CN 201210289362 A CN201210289362 A CN 201210289362A CN 102779637 A CN102779637 A CN 102779637A
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- transformer
- voltage
- combined power
- phase current
- power transformer
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Abstract
The invention discloses a combined power transformer which is formed by a voltage transformer and a current transformer. The combined power transformer is characterized in that the primary winding and secondary winding of the voltage transformer are equally divided into two sections which are respectively uniformly wound in the symmetry directions of the iron core of the transformer. The invention can solve the technical problem that the voltage transformer and the current transformer assembled together interfere with each other, thus the metering is inaccurate.
Description
Technical field
The present invention relates to the technology of the anti-outer magnetic disturbance of a kind of instrument transformer.
Background technology
In electric power system, be one of indispensable electric power primary equipment as the electric power mutual-inductor of metering usefulness.Be to use and easy for installation, voltage, current transformer will fit together usually, Here it is 10kV combination transformer.Usually, above-mentioned electric power mutual-inductor is carried out the qualified electric current of independent measurement, voltage, when fitting together, because mutual interference, error can change, thereby makes error overproof, and then makes metering inaccurate.Have only to solve the problem that causes that error changes of disturbing each other, can guarantee that just the error after above-mentioned electric power mutual-inductor is assembled is unlikely to influence the accuracy of metering.
Summary of the invention
The purpose of this invention is to provide a kind of combination of power instrument transformer, fit together mutual interference with solution voltage, current transformer, and then the inaccurate technical problem of feasible metering.
In order to realize the foregoing invention purpose, the technical scheme that the present invention adopted is following:
A kind of combination of power instrument transformer is made up of voltage, current transformer, and wherein first and second winding average mark of voltage transformer is made into two sections, evenly is wound on the symmetry direction of transformer iron core respectively.
Advantage of the present invention is following: interference magnetic flux to external world; In can first and second winding of coiling on the symmetry direction of voltage transformer iron core; Produce equal and opposite in direction, induced electromotive force of cancelling out each other in the opposite direction, thereby eliminated the influence of external magnetic field instrument transformer.
Description of drawings
Fig. 1 is first and second a winding theory structure sketch map of the present invention.
Fig. 2 is a structural front view of the present invention.
Fig. 3 is the left view of Fig. 2.
Fig. 4 is the vertical view of Fig. 2.
Accompanying drawing number: end of incoming cables of 1-A phase current mutual inductor, end of incoming cables of 2-B phase current mutual inductor, end of incoming cables of 3-C phase current mutual inductor, leading-out terminal of 4-A phase current mutual inductor, leading-out terminal of 5-B phase current mutual inductor, leading-out terminal of 6-C phase current mutual inductor.
Embodiment
The present invention is divided into two equal portions with first and second winding of voltage transformer; Evenly be wound on the symmetry direction of transformer iron core respectively; And two parts winding correctly connected into integral body first and second winding, like this, concerning instrument transformer itself; One of which, the secondary winding number of turn and the induced electromotive force that is produced by main flux all can not change, and are that external magnetic flux has had different influences.As shown in Figure 1, wherein, Φ 1 is the instrument transformer main flux; Φ 2 is the outer magnetic flux that disturbs, and can be known by Lenz's law, if pass under the identical situation of two parts secondary winding at Φ 2; Φ 2 is at the induced electromotive force Δ U1 of left-half generation and the induced electromotive force Δ U2 equal and opposite in direction of right half part generation; In the opposite direction, cancel out each other, thereby eliminated the influence of external magnetic field instrument transformer.
External structure of the present invention is referring to Fig. 2,3,4, comprises shell, binding post of instrument transformer etc.Binding post wherein comprises: on behalf of A phase current mutual inductor end of incoming cables 1, a BP1, AP1 represent B phase current mutual inductor end of incoming cables 2, a CP1 to represent C phase current mutual inductor end of incoming cables 3, an AP2 to represent A phase current mutual inductor leading-out terminal 4, a BP2 to represent B phase current mutual inductor leading-out terminal 5, a CP2 to represent leading-out terminal 6 of C phase current mutual inductor.
Claims (1)
1. a combination of power instrument transformer is made up of voltage, current transformer, it is characterized in that, wherein first and second winding average mark of voltage transformer is made into two sections, evenly is wound on the symmetry direction of transformer iron core respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102893628A CN102779637A (en) | 2012-08-15 | 2012-08-15 | Combined power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102893628A CN102779637A (en) | 2012-08-15 | 2012-08-15 | Combined power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102779637A true CN102779637A (en) | 2012-11-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102893628A Pending CN102779637A (en) | 2012-08-15 | 2012-08-15 | Combined power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102779637A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101790A (en) * | 1986-03-13 | 1987-09-30 | Mwb传感器制造股份公司 | Combined high-tension current and voltage transformer |
| CN2112557U (en) * | 1991-04-15 | 1992-08-12 | 大同铁路分局大同车辆厂 | Magnetic head sensor for proofing railwary electric interference |
| CN101305292A (en) * | 2005-11-08 | 2008-11-12 | 泽尔坦公司 | Disturbance elimination system for inductive sensors |
| CN201508769U (en) * | 2009-07-11 | 2010-06-16 | 江苏省电力公司建湖县供电公司 | 10kV and 20kV sharing current and voltage combination mutual inductor |
| KR101087639B1 (en) * | 2009-12-29 | 2011-11-30 | 한국전기연구원 | polymer composites type MOF for outdoors |
-
2012
- 2012-08-15 CN CN2012102893628A patent/CN102779637A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87101790A (en) * | 1986-03-13 | 1987-09-30 | Mwb传感器制造股份公司 | Combined high-tension current and voltage transformer |
| CN2112557U (en) * | 1991-04-15 | 1992-08-12 | 大同铁路分局大同车辆厂 | Magnetic head sensor for proofing railwary electric interference |
| CN101305292A (en) * | 2005-11-08 | 2008-11-12 | 泽尔坦公司 | Disturbance elimination system for inductive sensors |
| CN201508769U (en) * | 2009-07-11 | 2010-06-16 | 江苏省电力公司建湖县供电公司 | 10kV and 20kV sharing current and voltage combination mutual inductor |
| KR101087639B1 (en) * | 2009-12-29 | 2011-11-30 | 한국전기연구원 | polymer composites type MOF for outdoors |
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Legal Events
| Date | Code | Title | Description |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB02 | Change of applicant information |
Address after: 071000 private science and Technology Park, 71 East Road, Shibei District, Hebei, Baoding Applicant after: BAODING JIUDING BAOHU ELECTRIC CO., LTD. Address before: 071000 private science and Technology Park, 71 East Road, Shibei District, Hebei, Baoding Applicant before: Baoding Jiuding Electric Equipment Co.,Ltd. |
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| COR | Change of bibliographic data |
Free format text: CORRECT: APPLICANT; FROM: BAODING JIUDING ELECTRIC EQUIPMENT CO., LTD. TO: BAODING JIUDING BAOHU ELECTRIC CO., LTD. |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121114 |