CN103543338B - The method of a kind of measuring transformer different joint form loss unshakable in one's determination - Google Patents
The method of a kind of measuring transformer different joint form loss unshakable in one's determination Download PDFInfo
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- CN103543338B CN103543338B CN201310561754.XA CN201310561754A CN103543338B CN 103543338 B CN103543338 B CN 103543338B CN 201310561754 A CN201310561754 A CN 201310561754A CN 103543338 B CN103543338 B CN 103543338B
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Abstract
The present invention relates to the method for a kind of measuring transformer different joint form loss unshakable in one's determination, especially measure the core loss of different joint form, belong to power transformer technical field of electromagnetic measurement.Technical scheme is: comprise L-type laminated core (8), drive coil (9), measuring coil (10), folder (11), bolt (12) and nut (13), 4 L-type laminated core (8) two-arm alignment, intermediate air gap is identical, and fixing by folder (11), bolt (12) and nut (13), the two-arm of each L-type laminated core (8) is equipped with drive coil (9) and measuring coil (10).The invention has the beneficial effects as follows: can Measurement accuracy different model siliconized plate and different joint form core loss, simple to operate, easy.
Description
Technical field
The present invention relates to the method for a kind of measuring transformer different joint form loss unshakable in one's determination, especially measure the core loss of different joint form, belong to power transformer technical field of electromagnetic measurement.
Background technology
Stack-up type iron core is that longitudinal shear is become the silicon strip of one fixed width, the horizontal siliconized plate being cut into definite shape and size, then gets up to form transformer core by siliconized plate stack.In order to avoid there is butt-welded side seam, traditionally by staggered for lamination layering repeatedly dress, form " step-lap laminated " laminated core.This iron core refers to that two corresponding seams can across the iron core of the different ladder number of plies of lamination, and concrete progression can get odd number, the sequence on 3,5,7 rank, also the sequence on desirable even number 2,4,8 rank.Step-lap laminated iron core all has certain superiority than traditional Sandwich core, but stepping overlap joint core loss at different levels differs not a kind of special device and measures it, like this, in the design of transformer core, the difference providing stepping at different levels overlap joint core loss that just can not be quantitative.
Summary of the invention
The object of the invention is to provide the method for a kind of measuring transformer different joint form loss unshakable in one's determination, can measure the loss of the transformer core of the different trade mark and different joint form, solves Problems existing in background technology.
Technical scheme of the present invention is:
The special purpose device of a kind of measuring transformer different joint form loss unshakable in one's determination, comprise L-type laminated core, drive coil, measuring coil, folder, screw bolt and nut, four L-type laminated core two-arm alignment, intermediate air gap is identical, and fixed by folder, screw bolt and nut, entirety is square, and four L-type laminated cores are foursquare four angles, and each L-type laminated core two-arm is equipped with drive coil and measuring coil.
Described L-type laminated core adopts two to eight grades of stepping joint forms.
The method of a kind of measuring transformer different joint form loss unshakable in one's determination, comprise following processing step: after 1. being sheared by grain-oriented Si steel sheet, overlap laminated core, seam crossing overlaps according to three grades of stepping overlapping modes, overlap joint laminated core be L-type laminated core, and on two arms of L-type laminated core coiling measuring coil and drive coil; 2. the L-type laminated core that making four is identical, coiling measuring coil and drive coil on two arms of each L-type laminated core; Measuring coil in each L-type laminated core is identical, and drive coil is identical; 3. by the L-type laminated core of four coiling measuring coils and drive coil, two arms align between two, identical air gap is left in centre, and be fixed with folder, screw bolt and nut, overall is square, four L-type laminated cores are foursquare four angles, become and measure stack-up type transformer core loss device; Apply electric current 4. to four drive coils, first use power analyzer to measure the electric current I of drive coil
1and the voltage U of measuring coil
1, U
1with I
1product P
1be the loss value of the device of whole measurement stack-up type transformer core loss; 3/4ths P
1be the loss of three L-type laminated cores; 5. after obtaining the loss of driver unit; The L-type laminated core one of them being wound with drive coil and measuring coil is removed, and is replaced by test specimen laminated core, and L-type laminated core is also made in tested product laminated core; Air gap between two arms of test specimen laminated core and the arm of adjacent two L-type laminated cores with it the loss of pre-test driver unit time air gap identical; 6. the drive coil of remaining three L-type laminated cores is applied and electric current same above, continue to use power analyzer, measure the drive coil electric current I that residue three is wound with the L-type laminated core of drive coil and measuring coil
2with measuring coil voltage U
2, U
1with I
1product P
2, use P
23/4ths P of the pre-test deducted
1, be the loss of required test specimen laminated core of measuring.
Described tested product laminated core, the trade mark of its grain-oriented Si steel sheet is arbitrary, and joint form is also arbitrary, and the present invention measures the transformer core loss of the different trade mark and different joint form.
The invention has the beneficial effects as follows: the transformer core that the different trade mark and different joint form can be measured, the stepping joint form of experimental provision transformer core that is virtually reality like reality, first the loss of driver unit iron core is obtained, then the siliconized plate laminated core of any joint form of any trade mark is replaced by by 1/4th of the iron core of driver unit, experimental provision makes simple, and experimental implementation is simple and easy to do.
Accompanying drawing explanation
Fig. 1 is the secondary stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 2 is three grades of stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 3 is the level Four stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 4 is the Pyatyi stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 5 is six grades of stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 6 is seven grades of stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 7 is eight grades of stepping joint form schematic diagram of embodiment of the present invention test specimen laminated core;
Fig. 8 is structural representation of the present invention;
Fig. 9 is L-type laminated core of the present invention assembling schematic diagram;
Figure 10 is A position of the present invention partial enlarged drawing;
Figure 11 is B position of the present invention partial structurtes schematic diagram;
In figure: secondary stepping overlap joint 1, three grades of stepping overlap joints 2, level Four stepping overlap joint 3, Pyatyi stepping overlap joint 4, six grades of stepping overlap joints 5, seven grades of stepping overlap joints 6, eight grades of stepping overlap joints 7, L-type laminated core 8, drive coil 9, measuring coil 10, folder 11, bolt 12, nut 13, three grades of steppings overlap seam crossing 14 unshakable in one's determination.
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
The special purpose device of a kind of measuring transformer different joint form loss unshakable in one's determination, comprise L-type laminated core 8, drive coil 9, measuring coil 10, folder 11, spiral shell 12 screw bolt and nut 13, four L-type laminated core two-arm alignment, intermediate air gap is identical, and fixed by folder, screw bolt and nut, entirety is square, and four L-type laminated cores are foursquare four angles, and each L-type laminated core two-arm is equipped with drive coil and measuring coil.
The laminated core of the present embodiment L-type adopts three grades of stepping joint forms.
A method for measuring transformer different joint form loss unshakable in one's determination, step is as follows:
1. after shearing silicon steel sheet, overlap according to three grades of stepping joint forms, make four L-type laminated cores; Respectively around finger measuring coil and drive coil in four L-type laminated cores; Each arm of four L-type laminated cores, docks by identical gap; And using folder, screw bolt and nut is fixed;
2. connect power supply, apply electric current to four drive coils, and use the current value I of power analyzer record drive coil
1with the magnitude of voltage U of measuring coil
1and power P
1; Choose the test specimen laminated core needing test, the siliconized plate of the meaning trade mark can be selected for a post, shear the siliconized plate with L-type laminated core same widths in step 1 and length, l-shaped laminated core can be made according to any joint form (2,3,4,5,6,7,8 grades of stepping overlap joints);
3. take folder apart, screw bolt and nut, take off one of them L-type laminated core, test specimen laminated core is placed into the position of pulling down L-type laminated core; The drive coil of remaining three L-type laminated cores is applied and electric current same above, and uses the current value I of power analyzer record drive coil
2with the magnitude of voltage U of measuring coil
2and power P
2.; The loss of test specimen laminated core is P, then P is: P=P
2-(3/4) P
1.
Claims (2)
1. the method for a measuring transformer different joint form loss unshakable in one's determination, it is characterized in that comprising following processing step: after 1. being sheared by grain-oriented Si steel sheet, overlap laminated core, seam crossing overlaps according to three grades of stepping overlapping modes, overlap joint laminated core be L-type laminated core, and on two arms of L-type laminated core coiling measuring coil and drive coil; 2. the L-type laminated core that making four is identical, coiling measuring coil and drive coil on two arms of each L-type laminated core; Measuring coil in each L-type laminated core is identical, and drive coil is identical; 3. by the L-type laminated core of four coiling measuring coils and drive coil, two arms align between two, identical air gap is left in centre, and be fixed with folder, screw bolt and nut, overall is square, four L-type laminated cores are foursquare four angles, become and measure stack-up type transformer core loss device; Apply electric current 4. to four drive coils, first use power analyzer to measure the electric current I of drive coil
1and the voltage U of measuring coil
1, U
1with I
1product P
1be the loss value of the device of whole measurement stack-up type transformer core loss; 3/4ths P
1be the loss of three L-type laminated cores; 5. after obtaining the loss of driver unit; The L-type laminated core one of them being wound with drive coil and measuring coil is removed, and is replaced by test specimen laminated core, and L-type laminated core is also made in test specimen laminated core; Air gap between two arms of test specimen laminated core and the arm of adjacent two L-type laminated cores with it the loss of pre-test driver unit time air gap identical; 6. the drive coil of remaining three L-type laminated cores is applied and electric current same above, continue to use power analyzer, measure the drive coil electric current I that residue three is wound with the L-type laminated core of drive coil and measuring coil
2with measuring coil voltage U
2, U
1with I
1product P
2, use P
23/4ths P of the pre-test deducted
1, be the loss of required test specimen laminated core of measuring.
2. the method for a kind of measuring transformer according to claim 1 different joint form loss unshakable in one's determination, it is characterized in that described test specimen laminated core, the trade mark of its grain-oriented Si steel sheet is arbitrary, and joint form is also arbitrary.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561754.XA CN103543338B (en) | 2013-11-13 | 2013-11-13 | The method of a kind of measuring transformer different joint form loss unshakable in one's determination |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310561754.XA CN103543338B (en) | 2013-11-13 | 2013-11-13 | The method of a kind of measuring transformer different joint form loss unshakable in one's determination |
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| CN103543338A CN103543338A (en) | 2014-01-29 |
| CN103543338B true CN103543338B (en) | 2015-11-25 |
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| CN201310561754.XA Active CN103543338B (en) | 2013-11-13 | 2013-11-13 | The method of a kind of measuring transformer different joint form loss unshakable in one's determination |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105911364B (en) * | 2016-06-14 | 2018-11-02 | 福州大学 | The core loss measuring circuit and its method of three-phase reactor under arbitrary biasing |
| CN111965450B (en) * | 2020-08-11 | 2023-05-09 | 国网河北省电力有限公司沧州供电分公司 | Simulation device for researching influence of inter-harmonic on iron-core-containing equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194903A (en) * | 2001-12-28 | 2003-07-09 | Jfe Engineering Kk | Tensile force adding apparatus for measuring magnetism |
| KR20040056922A (en) * | 2002-12-24 | 2004-07-01 | 주식회사 포스코 | Test piece insertion apparatus of magnetic tester |
| CN102262189A (en) * | 2010-12-30 | 2011-11-30 | 保定天威集团有限公司 | Method for separating core excitation volt-amperes by double-core method |
| CN103064042A (en) * | 2012-12-27 | 2013-04-24 | 保定天威集团有限公司 | Measuring model and measuring method for performance of silicon steel sheets on transformer product |
| CN203535121U (en) * | 2013-11-13 | 2014-04-09 | 保定天威集团有限公司 | Device for measuring losses of different overlapping forms of transformer iron cores |
-
2013
- 2013-11-13 CN CN201310561754.XA patent/CN103543338B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003194903A (en) * | 2001-12-28 | 2003-07-09 | Jfe Engineering Kk | Tensile force adding apparatus for measuring magnetism |
| KR20040056922A (en) * | 2002-12-24 | 2004-07-01 | 주식회사 포스코 | Test piece insertion apparatus of magnetic tester |
| CN102262189A (en) * | 2010-12-30 | 2011-11-30 | 保定天威集团有限公司 | Method for separating core excitation volt-amperes by double-core method |
| CN103064042A (en) * | 2012-12-27 | 2013-04-24 | 保定天威集团有限公司 | Measuring model and measuring method for performance of silicon steel sheets on transformer product |
| CN203535121U (en) * | 2013-11-13 | 2014-04-09 | 保定天威集团有限公司 | Device for measuring losses of different overlapping forms of transformer iron cores |
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| CN103543338A (en) | 2014-01-29 |
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Effective date of registration: 20151028 Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Applicant after: BAODING TIANWEI BAOBIAN ELECTRIC Co.,Ltd. Applicant after: STATE GRID SMART GRID Research Institute Address before: 071051, Hebei City, Baoding province ginkgo Road, No. 198 Jin Di garden complex Applicant before: BAODING TIANWEI GROUP Co.,Ltd. Applicant before: STATE GRID SMART GRID Research Institute |
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| C56 | Change in the name or address of the patentee | ||
| CB03 | Change of inventor or designer information |
Inventor after: Fan Yana Inventor after: Zhao Zhigang Inventor after: Liu Tao Inventor after: Ma Guang Inventor after: Hou Yiming Inventor after: Cheng Zhiguang Inventor after: Liu Yang Inventor after: Wu Ximao Inventor before: Fan Yana Inventor before: Zhao Zhigang Inventor before: Liu Tao Inventor before: Ma Guang Inventor before: Hou Yiming Inventor before: Cheng Zhiguang |
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| COR | Change of bibliographic data | ||
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Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee after: BAODING TIANWEI BAOBIAN ELECTRIC Co.,Ltd. Patentee after: GLOBAL ENERGY INTERCONNECTION Research Institute Address before: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee before: BAODING TIANWEI BAOBIAN ELECTRIC Co.,Ltd. Patentee before: STATE GRID SMART GRID Research Institute |
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| TR01 | Transfer of patent right |
Effective date of registration: 20160615 Address after: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee after: BAODING TIANWEI BAOBIAN ELECTRIC Co.,Ltd. Patentee after: GLOBAL ENERGY INTERCONNECTION Research Institute Patentee after: STATE GRID LIAONING ELECTRIC POWER Research Institute Address before: 071056 West Road, Hebei, Baoding, No. 2222, No. Patentee before: BAODING TIANWEI BAOBIAN ELECTRIC Co.,Ltd. Patentee before: GLOBAL ENERGY INTERCONNECTION RESEARCH INSTITUTE |
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| CB03 | Change of inventor or designer information |
Inventor after: Fan Yana Inventor after: Zhao Zhigang Inventor after: Liu Tao Inventor after: Gong Xuehai Inventor after: Ma Guang Inventor after: Hou Yiming Inventor after: Cheng Zhiguang Inventor after: Liu Yang Inventor after: Wu Ximao Inventor before: Fan Yana Inventor before: Zhao Zhigang Inventor before: Liu Tao Inventor before: Ma Guang Inventor before: Hou Yiming Inventor before: Cheng Zhiguang Inventor before: Liu Yang Inventor before: Wu Ximao |
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