CN114660370A - Copper magnetic shielding measuring device under harmonic and direct current combined excitation - Google Patents
Copper magnetic shielding measuring device under harmonic and direct current combined excitation Download PDFInfo
- Publication number
- CN114660370A CN114660370A CN202210547814.1A CN202210547814A CN114660370A CN 114660370 A CN114660370 A CN 114660370A CN 202210547814 A CN202210547814 A CN 202210547814A CN 114660370 A CN114660370 A CN 114660370A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- base
- direct current
- sliding
- rotating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0835—Testing shielding, e.g. for efficiency
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
The invention belongs to the technical field of common measurement of electromagnetic foundations of power transformers and reactors, and particularly relates to a copper magnetic shielding measuring device under harmonic and direct-current compound excitation, which comprises a measuring base, a fixed base, a limiting cover and an adjusting and measuring unit, wherein the measuring base is provided with a magnetic shielding measuring device; a plurality of fixed bases are fixedly connected to the measuring base; a limit cover is sleeved on the fixed base in a threaded manner; the limiting cover is provided with an adjusting and measuring unit; the harmonic wave and direct current offset composite output is realized in the same excitation power supply, the harmonic wave waveform and the direct current offset can be respectively and independently and continuously adjusted, and the actual working condition can be accurately simulated; a double-coil structure is designed, and the combination of current directions can simulate different magnetic flux spatial distribution conditions; with regard to the shielding member, the free combination of the size specification and the number of the copper shielding and the magnetic shielding member is supported, and the distance from the exciting coil can be continuously adjusted; and the quantitative analysis of the shielding effect provides basic data support for product optimization design and fault finding.
Description
Technical Field
The invention relates to the technical field of measurement of electromagnetic basic commonality of a power transformer and a reactor, in particular to a copper magnetic shielding measuring device under harmonic and direct current compound excitation.
Background
In the engineering practice of transformer design and production, the principle of magnetic shielding and copper shielding is known consistently, but the quantitative analysis of the shielding effect needs to be studied deeply; the arrangement structure and the number of the copper and the magnetic shielding are required to simultaneously consider the performance and the cost so as to obtain good technical and economic benefits.
Along with the transformation of a power grid from an alternating current to an alternating current and direct current mixed form, the harmonic content and the direct current component are more complex than those of the prior art, and the quantitative analysis of the copper/magnetic shielding effect under the composite excitation condition has engineering significance.
Most of the previous quantitative analysis excitation sources are power frequency, power frequency + harmonic wave and power frequency + direct current excitation, and the harmonic wave + direct current composite excitation can only adopt a mode that two power supplies are respectively connected into two different coils to simulate the actual working condition, so that inherent equivalent errors exist in the test principle; therefore, a copper magnetic shielding measuring device under harmonic and direct current composite excitation is provided for solving the problems.
Disclosure of Invention
The invention provides a copper magnetic shielding measuring device under harmonic and direct current combined excitation, aiming at making up the defects of the prior art and solving the problems that most of the conventional quantitative analysis excitation sources are power frequency, power frequency + harmonic wave and power frequency + direct current excitation, the harmonic wave + direct current combined excitation only adopts a mode that two power supplies are respectively connected into two different coils to simulate the actual working condition, and the inherent equivalent error exists in the test principle.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a copper magnetic shielding measuring device under harmonic and direct current compound excitation, which comprises a measuring base, a fixed base, a limiting cover and an adjusting and measuring unit, wherein the measuring base is fixed on the fixed base; a plurality of fixed bases are fixedly connected to the measuring base; a limit cover is sleeved on the fixed base in a threaded manner; the limiting cover is provided with an adjusting and measuring unit; the adjusting and measuring unit comprises a rotating bottom plate, a rotating pipe and a rotating shaft; the rotating bottom plate is rotatably connected between the limiting cover and the fixed base; the upper surface of the rotating bottom plate is fixedly connected with a rotating pipe; the upper end of the rotating pipe is inserted with a rotating shaft in a threaded manner; the upper end of the rotating shaft is fixedly connected with a fixed seat; the fixed seat is fixedly connected to the lower surface of the component tray; a plurality of shielding components are placed on the upper surface of the component tray; the upper surface of the measuring base is fixedly connected with a sliding base; the sliding base is buckled and slidably connected with a sliding upper cover; two exciting coils are fixedly connected to the sliding upper cover; when the magnetic flux measuring device works, the height of the component tray can be changed by rotating the rotating bottom plate and the rotating pipe, so that the measuring magnetic fluxes with different heights can be realized; through the sliding fit of the sliding base and the sliding upper cover, the left and right positions of the exciting coil can be changed by pushing the sliding upper cover, so that the position can be changed, and the size of magnetic flux can be measured at multiple positions; the harmonic wave and direct current offset composite output is realized in the same excitation power supply, the harmonic wave waveform and the direct current offset can be respectively and independently and continuously adjusted, and the actual working condition can be accurately simulated; a double-coil structure is designed, and the combination of current directions can simulate different magnetic flux spatial distribution conditions; the size specification and the number of the copper shielding and magnetic shielding components are freely combined, and the distance between the copper shielding and magnetic shielding components and the exciting coil can be continuously adjusted; and the quantitative analysis of the shielding effect provides basic data support for product optimization design and fault finding.
Preferably, a plurality of first fasteners are fixedly connected to the lower surface of the rotating bottom plate through threads; a first limiting plate is sleeved on the first fastener; the during operation is through the first limiting plate that wear-resisting material made for first limiting plate is little with unable adjustment base's friction loss, thereby increase of service life, simultaneously under the dismouting installation of first fastener, conveniently changes first limiting plate.
Preferably, a plurality of first balls are rotatably connected between the first limiting plate and the rotating bottom plate; the upper surface of the limit cover is provided with scale marks in a surrounding manner; the upper surface of the limit cover is fixedly connected with a fixing piece corresponding to the opening thread of the rotating bottom plate; during operation, the number of turns and the angle of rotation of the rotating pipe can be accurately determined through the scale marks, and therefore the height of the component tray can be accurately adjusted.
Preferably, the lower surface of the sliding upper cover is fixedly connected with a central fixing plate; a threaded shaft is inserted in the central fixing plate in a threaded manner; the threaded shaft is rotatably connected to the sliding base; during operation, can rotate the threaded spindle through the instrument, then change the central fixed plate that the epaxial screw thread of threaded spindle cup jointed to change the effect position of sliding the upper cover, thereby realize the accurate regulation that lasts and slide the upper cover about the position.
Preferably, the threaded shaft is sleeved with an adjusting handle; a circular tube handle is fixedly connected to the rotating tube; when the device works, the handle is adjusted to conveniently rotate the threaded shaft to adjust the action position of the sliding upper cover for measurement; the rotating pipe is convenient to rotate manually through the circular pipe handle.
Preferably, a plurality of second fasteners are fixedly connected to the upper surface of the sliding base; a second limiting plate is sleeved on the second fastener; during operation, through the second limiting plate that resistant friction material made for when can prolong the friction and use, conveniently change the second limiting plate after wearing and tearing simultaneously.
Preferably, a plurality of second balls are rotatably connected between the second limiting plate and the sliding base; the component tray is made of an epoxy laminated glass cloth plate; four binding posts are arranged on the exciting coil; when the test bench works, the sliding friction between the sliding upper cover and the sliding base is changed into rolling friction through the rotation of the second ball, so that the rotation resistance is reduced, and the sliding upper cover is conveniently pushed to change the position to carry out test measurement; the component tray is made of the epoxy laminated glass cloth plate, so that the transmission of a magnetic field is not influenced, and the accuracy of the measured magnetic field is ensured; the exciting coils are of double-coil structures and are provided with four binding posts, so that the current directions of the two exciting coils are changed, and the shielding values can be measured respectively when the current directions are the same, opposite and opposite.
The invention has the advantages that:
1. the invention realizes the composite output of harmonic wave and direct current bias in the same excitation power supply, and the harmonic wave form and the direct current bias can be respectively and independently and continuously adjusted, thereby accurately simulating the actual working condition; a double-coil structure is designed, and the combination of current directions can simulate different magnetic flux spatial distribution conditions; the size specification and the number of the copper shielding and magnetic shielding components are freely combined, and the distance between the copper shielding and magnetic shielding components and the exciting coil can be continuously adjusted; quantitative analysis of shielding effect provides basic data support for product optimization design and fault finding;
2. the height of the component tray can be changed by rotating the rotating bottom plate and the rotating pipe, so that the measuring magnetic fluxes with different heights can be realized; through the sliding fit of the sliding base and the sliding upper cover, the left and right positions of the exciting coil can be changed by pushing the sliding upper cover, so that the position can be changed, and the magnetic flux can be measured at multiple positions.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic cross-sectional front view of an apparatus according to a first embodiment;
FIG. 2 is a schematic side view of a cross-sectional structure of the device according to the first embodiment;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
fig. 4 is a schematic perspective view of a sliding base according to a first embodiment;
FIG. 5 is a schematic sectional view of the second embodiment of the device.
In the figure: 1. a measuring base; 2. a fixed base; 3. a limiting cover; 4. rotating the bottom plate; 5. rotating the tube; 6. a rotating shaft; 7. a fixed seat; 8. a component tray; 9. a shielding member; 10. a sliding base; 11. sliding the upper cover; 12. an excitation coil; 13. a round tube handle; 14. scale marks; 15. a fixing member; 16. a first limit plate; 17. a first fastener; 18. a first ball bearing; 19. a central fixing plate; 20. a threaded shaft; 21. adjusting the handle; 22. a second ball bearing; 23. a second limiting plate; 24. a second fastener; 25. and (4) a synchronous belt.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1-5, a copper magnetic shielding measuring device under harmonic and dc combined excitation includes a measuring base 1, a fixing base 2, a limiting cover 3 and an adjusting and measuring unit; a plurality of fixed bases 2 are fixedly connected to the measuring base 1; the fixed base 2 is in threaded sleeve connection with a limit cover 3; the limiting cover 3 is provided with an adjusting and measuring unit; the adjusting and measuring unit comprises a rotating bottom plate 4, a rotating pipe 5 and a rotating shaft 6; the rotating bottom plate 4 is rotatably connected between the limiting cover 3 and the fixed base 2; the upper surface of the rotating bottom plate 4 is fixedly connected with a rotating pipe 5; the upper end of the rotating pipe 5 is inserted with a rotating shaft 6 in a threaded manner; the upper end of the rotating shaft 6 is fixedly connected with a fixed seat 7; the fixed seat 7 is fixedly connected to the lower surface of the component tray 8; a plurality of shielding members 9 are placed on the upper surface of the member tray 8; the upper surface of the measuring base 1 is fixedly connected with a sliding base 10; the sliding base 10 is connected with a sliding upper cover 11 in a buckling and sliding manner; two exciting coils 12 are fixedly connected to the sliding upper cover 11; when the magnetic flux measuring device works, the height of the component tray 8 can be changed by rotating the rotating bottom plate 4 and the rotating pipe 5, so that the measuring magnetic fluxes with different heights can be realized; through the sliding fit of the sliding base 10 and the sliding upper cover 11, the left and right positions of the excitation coil 12 can be changed by pushing the sliding upper cover 11, so that the position change is realized, and the magnetic flux can be measured at multiple positions; the harmonic wave and direct current offset composite output is realized in the same excitation power supply, the harmonic wave waveform and the direct current offset can be respectively and independently and continuously adjusted, and the actual working condition can be accurately simulated; a double-coil structure is designed, and the combination of current directions can simulate different magnetic flux spatial distribution conditions; as for the shield member 9, it supports a free combination of the copper shield and the magnetic shield size and number, and the distance from the exciting coil 12 can be continuously adjusted; and the quantitative analysis of the shielding effect provides basic data support for product optimization design and fault finding.
A plurality of first fastening pieces 17 are fixedly connected to the lower surface of the rotating bottom plate 4 through threads; a first limiting plate 16 is sleeved on the first fastener 17; the during operation is through the first limiting plate 16 that wear-resisting material made for first limiting plate 16 is little with unable adjustment base 2's friction loss, thereby increase of service life, simultaneously under the dismouting installation of first fastener 17, conveniently changes first limiting plate 16.
A plurality of first balls 18 are rotatably connected between the first limiting plate 16 and the rotating bottom plate 4; the upper surface of the limit cover 3 is provided with scale marks 14 in a surrounding way; the upper surface of the limit cover 3 is fixedly connected with a fixing piece 15 corresponding to the opening thread of the rotating bottom plate 4; during operation, the number of turns and the angle of the rotating pipe 5 can be accurately determined through the scale marks 14, so that the height of the component tray 8 can be accurately adjusted.
The lower surface of the sliding upper cover 11 is fixedly connected with a central fixing plate 19; a threaded shaft 20 is inserted in the central fixing plate 19 in a threaded manner; the threaded shaft 20 is rotatably connected to the sliding base 10; during operation, can rotate threaded shaft 20 through the instrument, change the central fixed plate 19 that the screw thread cup jointed on threaded shaft 20 then to change the effect position of slip upper cover 11, thereby realize the accurate left and right sides position of continuously adjusting slip upper cover 11.
An adjusting handle 21 is sleeved on the threaded shaft 20; a round pipe handle 13 is fixedly connected to the rotating pipe 5; during operation, the adjusting handle 21 is convenient for rotating the threaded shaft 20 to adjust the action position of the sliding upper cover 11 for measurement; the rotating tube 5 is conveniently rotated manually by a tube handle 13.
A plurality of second fasteners 24 are fixedly connected to the upper surface of the sliding base 10; a second limiting plate 23 is sleeved on the second fastener 24; the during operation is through the second limiting plate 23 that friction-resistant material made for when can prolonging friction and using, conveniently change the second limiting plate 23 after the wearing and tearing simultaneously.
A plurality of second balls 22 are rotatably connected between the second limiting plate 23 and the sliding base 10; the component tray 8 is made of an epoxy laminated glass cloth plate; the excitation coil 12 is provided with four binding posts; during operation, the sliding friction between the sliding upper cover 11 and the sliding base 10 is changed into rolling friction through the rotation of the second ball 22, so that the rotation resistance is reduced, and the sliding upper cover 11 is conveniently pushed to change the position for test measurement; the component tray 8 is made of epoxy laminated glass cloth plates, so that the transmission of a magnetic field is not influenced, and the accuracy of the measured magnetic field is ensured; the excitation coil 12 is of a double-coil structure and has four binding posts, so that the current directions in the two excitation coils 12 are changed, and the shielding values can be measured respectively when the current directions are the same, opposite and opposite.
Example two
Referring to fig. 5, in a first comparative example, as another embodiment of the present invention, a synchronous belt 25 is engaged and sleeved on four circular tube handles 13; during operation, the circular tube handle 13 can be synchronously rotated by rotating the synchronous belt 25, so that the synchronous rotation of the rotating tube 5 is realized, the rotating tube 5 is synchronously rotated and sleeved on the rotating shaft 6, and the function of synchronously adjusting the height is realized.
According to the working principle, the height of the component tray 8 can be changed by rotating the rotating bottom plate 4 and the rotating pipe 5, so that the measuring magnetic fluxes with different heights can be realized; through the sliding fit of the sliding base 10 and the sliding upper cover 11, the left and right positions of the exciting coil 12 can be changed by pushing the sliding upper cover 11, so that the position change is realized, and the magnetic flux is measured at multiple positions; the harmonic wave and direct current offset composite output is realized in the same excitation power supply, the harmonic wave waveform and the direct current offset can be respectively and independently and continuously adjusted, and the actual working condition can be accurately simulated; a double-coil structure is designed, and the combination of current directions can simulate different magnetic flux spatial distribution conditions; as for the shield member 9, it supports a free combination of the copper shield and the magnetic shield size and number, and the distance from the exciting coil 12 can be continuously adjusted; quantitative analysis of shielding effect provides basic data support for product optimization design and fault finding; the first limiting plate 16 made of wear-resistant materials enables the friction loss between the first limiting plate 16 and the fixed base 2 to be small, so that the service life is prolonged, and meanwhile, the first limiting plate 16 is convenient to replace under the detachable installation of the first fastening piece 17; the number of turns and the angle of the rotating pipe 5 can be accurately determined through the scale marks 14, so that the height of the component tray 8 can be accurately adjusted; the threaded shaft 20 can be rotated by a tool, and then the central fixing plate 19 sleeved by the threads on the threaded shaft 20 is changed, so that the action position of the sliding upper cover 11 is changed, and the left and right positions of the sliding upper cover 11 are accurately and continuously adjusted; the action position of the sliding upper cover 11 is adjusted by conveniently rotating the threaded shaft 20 through the adjusting handle 21 to carry out measurement; the rotating pipe 5 is convenient to rotate manually through the circular pipe handle 13; the second limiting plate 23 made of the friction-resistant material can prolong the friction use time and is convenient to replace the worn second limiting plate 23; through the rotation of the second ball 22, the sliding friction between the sliding upper cover 11 and the sliding base 10 is changed into rolling friction, so that the rotation resistance is reduced, and the sliding upper cover 11 is conveniently pushed to change the position for test measurement; the component tray 8 is made of epoxy laminated glass cloth plates, so that the transmission of a magnetic field is not influenced, and the accuracy of the measured magnetic field is ensured; the excitation coil 12 is of a double-coil structure and has four binding posts, so that the current directions in the two excitation coils 12 are changed, and the shielding values can be measured respectively when the current directions are the same, opposite and opposite.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed.
Claims (7)
1. The utility model provides a copper magnetic screen measuring device under harmonic adds direct current combined excitation which characterized in that: comprises a measuring base (1), a fixed base (2), a limiting cover (3) and an adjusting and measuring unit; a plurality of fixed bases (2) are fixedly connected to the measuring base (1); the fixed base (2) is sleeved with a limit cover (3) in a threaded manner; the limiting cover (3) is provided with an adjusting and measuring unit; the adjusting and measuring unit comprises a rotating bottom plate (4), a rotating pipe (5) and a rotating shaft (6); the rotating bottom plate (4) is rotatably connected between the limiting cover (3) and the fixed base (2); the upper surface of the rotating bottom plate (4) is fixedly connected with a rotating pipe (5); the upper end of the rotating pipe (5) is inserted with a rotating shaft (6) in a threaded manner; the upper end of the rotating shaft (6) is fixedly connected with a fixed seat (7); the fixed seat (7) is fixedly connected to the lower surface of the component tray (8); a plurality of shielding members (9) are placed on the upper surface of the member tray (8); the upper surface of the measuring base (1) is fixedly connected with a sliding base (10); the sliding base (10) is connected with a sliding upper cover (11) in a buckling and sliding manner; two exciting coils (12) are fixedly connected to the sliding upper cover (11).
2. The copper magnetic shielding measuring device under harmonic and direct current compound excitation according to claim 1, characterized in that: a plurality of first fasteners (17) are fixedly connected to the lower surface of the rotating bottom plate (4) through threads; and a first limiting plate (16) is sleeved on the first fastener (17).
3. The copper magnetic shielding measuring device under harmonic plus direct current compound excitation according to claim 2, characterized in that: a plurality of first balls (18) are rotatably connected between the first limiting plate (16) and the rotating bottom plate (4); the upper surface of the limiting cover (3) is provided with scale marks (14) in a surrounding manner; the upper surface of the limiting cover (3) is fixedly connected with a fixing piece (15) corresponding to the tapping thread of the rotating bottom plate (4).
4. The copper magnetic shielding measuring device under harmonic plus direct current compound excitation according to claim 3, characterized in that: the lower surface of the sliding upper cover (11) is fixedly connected with a central fixing plate (19); a threaded shaft (20) is inserted in the central fixing plate (19) in a threaded manner; the threaded shaft (20) is rotatably connected to the sliding base (10).
5. The copper magnetic shielding measuring device under harmonic plus direct current compound excitation according to claim 4, characterized in that: an adjusting handle (21) is sleeved on the threaded shaft (20); and a round pipe handle (13) is fixedly connected to the rotating pipe (5).
6. The copper magnetic shielding measuring device under harmonic plus direct current compound excitation according to claim 5, characterized in that: a plurality of second fasteners (24) are fixedly connected to the upper surface of the sliding base (10); and a second limiting plate (23) is sleeved on the second fastening piece (24).
7. The copper magnetic shielding measuring device under harmonic and direct current compound excitation according to claim 6, characterized in that: a plurality of second balls (22) are rotatably connected between the second limiting plate (23) and the sliding base (10); the component pallet (8) is made of an epoxy laminated glass cloth plate; the excitation coil (12) is provided with four binding posts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210547814.1A CN114660370B (en) | 2022-05-20 | 2022-05-20 | Copper magnetic shielding measuring device under harmonic and direct current combined excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210547814.1A CN114660370B (en) | 2022-05-20 | 2022-05-20 | Copper magnetic shielding measuring device under harmonic and direct current combined excitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114660370A true CN114660370A (en) | 2022-06-24 |
| CN114660370B CN114660370B (en) | 2022-11-01 |
Family
ID=82037045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210547814.1A Active CN114660370B (en) | 2022-05-20 | 2022-05-20 | Copper magnetic shielding measuring device under harmonic and direct current combined excitation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114660370B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090021336A1 (en) * | 2002-12-16 | 2009-01-22 | Energetics Technologies, Llc | Inductor for the excitation of polyharmonic rotating magnetic fields |
| CN102496446A (en) * | 2011-11-29 | 2012-06-13 | 中国西电电气股份有限公司 | Zero magnetic flux direct-current current transformer |
| CN106772151A (en) * | 2016-11-10 | 2017-05-31 | 河北工业大学 | A kind of measuring method of the magnetic screen frame magnetic loss under alternating current-direct current mixed excitation |
| CN206960634U (en) * | 2017-05-19 | 2018-02-02 | 河北工业大学 | Measure transformer core material hysteresis loop line equipment therefor under harmonic excitation |
| CN112305317A (en) * | 2020-11-12 | 2021-02-02 | 保定天威保变电气股份有限公司 | Method for measuring loss of structural part under AC/DC hybrid excitation condition |
| CN213581155U (en) * | 2020-11-12 | 2021-06-29 | 保定天威保变电气股份有限公司 | Transformer structure loss measuring device |
| CN113835051A (en) * | 2020-12-25 | 2021-12-24 | 华北电力大学（保定） | Method for determining stray loss of magnetic conduction component under alternating current-direct current composite excitation |
-
2022
- 2022-05-20 CN CN202210547814.1A patent/CN114660370B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090021336A1 (en) * | 2002-12-16 | 2009-01-22 | Energetics Technologies, Llc | Inductor for the excitation of polyharmonic rotating magnetic fields |
| CN102496446A (en) * | 2011-11-29 | 2012-06-13 | 中国西电电气股份有限公司 | Zero magnetic flux direct-current current transformer |
| CN106772151A (en) * | 2016-11-10 | 2017-05-31 | 河北工业大学 | A kind of measuring method of the magnetic screen frame magnetic loss under alternating current-direct current mixed excitation |
| CN206960634U (en) * | 2017-05-19 | 2018-02-02 | 河北工业大学 | Measure transformer core material hysteresis loop line equipment therefor under harmonic excitation |
| CN112305317A (en) * | 2020-11-12 | 2021-02-02 | 保定天威保变电气股份有限公司 | Method for measuring loss of structural part under AC/DC hybrid excitation condition |
| CN213581155U (en) * | 2020-11-12 | 2021-06-29 | 保定天威保变电气股份有限公司 | Transformer structure loss measuring device |
| CN113835051A (en) * | 2020-12-25 | 2021-12-24 | 华北电力大学（保定） | Method for determining stray loss of magnetic conduction component under alternating current-direct current composite excitation |
Non-Patent Citations (2)
| Title |
|---|
| 孟凡辉: "多谐波激励条件下构件损耗的模拟与验证", 《中国优秀硕士学位论文全文数据库 (工程科技Ⅱ辑)》 * |
| 赵小军: "谐波激励下变压器结构件杂散损耗的模拟与验证", 《中国电机工程学报》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114660370B (en) | 2022-11-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201017506Y (en) | Three-dimensional helmholtz coil magnetic field experiment instrument | |
| CN205899897U (en) | Biography that magnetic resonance mode is wireless can presentation device | |
| CN114660370B (en) | Copper magnetic shielding measuring device under harmonic and direct current combined excitation | |
| CN210221036U (en) | Semiconductor height detection equipment | |
| CN205879704U (en) | Perpendicular impact tester | |
| CN209166315U (en) | A kind of general disc type gear M value detection device | |
| CN214276718U (en) | Bevel gear size precision detection device | |
| CN207502703U (en) | A kind of device for being used to measure neodymium-iron-boron component table magnetic | |
| CN104535946B (en) | A kind of specific susceptibility determinator | |
| CN109188323A (en) | A kind of novel magnet steel magnetic signature automatic detection device | |
| CN218122228U (en) | Electric energy meter online checking auxiliary device | |
| CN208720929U (en) | A kind of multifunctional detecting device | |
| CN214539991U (en) | Alternating magnetometer calibrating device | |
| CN216116345U (en) | Full-automatic weighing apparatus test machine | |
| CN210570365U (en) | Battery check out test set for new forms of energy | |
| CN107486599A (en) | A kind of isometric cutter device of building industry | |
| CN208156175U (en) | A kind of magnetic flux detecting probe | |
| CN209424593U (en) | A kind of angle retainer for electric hand drill | |
| CN204595190U (en) | Full-automatic specific susceptibility determinator | |
| CN214472742U (en) | Quick nondestructive test device of spectrum of vitamin C content | |
| CN213781819U (en) | Transformer manufacturing installation of low energy consumption | |
| CN220419422U (en) | Power box capable of self-calibrating magnetometer | |
| CN209416847U (en) | A kind of lead storage battery casing rigidity detection device facilitating adjusting | |
| CN219777738U (en) | Power converter placement device for providing direct current for test object | |
| CN219347574U (en) | Rotary table for inspecting round runout and surface runout of parts |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |