CN108375345B - distributed optical fiber sensor arrangement structure - Google Patents
distributed optical fiber sensor arrangement structure Download PDFInfo
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- CN108375345B CN108375345B CN201810164102.5A CN201810164102A CN108375345B CN 108375345 B CN108375345 B CN 108375345B CN 201810164102 A CN201810164102 A CN 201810164102A CN 108375345 B CN108375345 B CN 108375345B
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- optical fiber
- winding
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- supporting plate
- sensor arrangement
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 64
- 238000004804 winding Methods 0.000 claims abstract description 40
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 6
- 239000000835 fiber Substances 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 239000000741 silica gel Substances 0.000 claims description 2
- 229910002027 silica gel Inorganic materials 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Transform (AREA)
Abstract
The invention discloses an distributed optical fiber sensor arrangement structure which comprises a winding, wherein the outer side of the winding is provided with a optical fiber and a second optical fiber, the optical fiber is fixed on the winding through an installation frame, the second optical fiber is attached to the winding through an insulating tape, the outer side of the second optical fiber is wrapped with a heat insulation layer, the installation frame comprises a shell fixed on the winding, a supporting plate is connected in the shell, the end of the supporting plate is in contact with the winding, the other end of the supporting plate is in contact with a optical fiber, the optical fiber is fixed on the shell through two buckles, the second optical fiber is provided with a plurality of fixed points, and two insulating tapes are fixed on each fixed point in a crossed mode.
Description
Technical Field
The invention relates to the technical field of transformers, in particular to an distributed optical fiber sensor arrangement structure.
Background
In the research practice and engineering application aiming at the deformation detection of the transformer winding at home and abroad, the winding deformation state is evaluated mainly according to the relative change of characteristic quantities such as electrical parameters, physical dimensions, geometric shapes, temperature and the like when the transformer winding is deformed. Through a large number of theoretical analysis and experimental research of researchers at home and abroad, the main detection method of winding deformation mainly comprises off-line detection and on-line detection. The mainstream methods for off-line detection include a short-circuit impedance method, a frequency response method and a low-voltage pulse method. The mainstream method for online detection is vibration method.
The method is characterized in that the deformation of the power transformer winding is detected only in the fault maintenance after the fault of the transformer is stopped, the mode is a passive defense mode after faults occur, the method belongs to an off-line detection method and cannot find out deformation defects early, a scheduled maintenance mode is adopted for planned maintenance of the transformer developed later, preventive maintenance is carried out on the transformer, definite progress is achieved in comparison with the fault maintenance, but the defects of 'insufficient maintenance' and 'excessive maintenance' are avoided due to the fact that the state information of the transformer is unknown in advance, and a large amount of manpower, material resources and financial resources are wasted.
Distributed optical fiber sensing technology has been successfully applied in many fields at present, and has popular applications in the aspects of cables, bridges, coal mines, traffic and disaster early warning by virtue of the advantages of small volume, light weight, good insulating property and high sensitivity.
Disclosure of Invention
The technical problem to be solved by the invention is to provide an distributed optical fiber sensor arrangement structure, which can solve the defects of the prior art and improve the accuracy of the optical fiber sensor for detecting the transformer winding.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows.
distributed optical fiber sensor arrangement structure comprises a winding, wherein a optical fiber and a second optical fiber are arranged on the outer side of the winding, the optical fiber is fixed on the winding through an installation frame, the second optical fiber is attached to the winding through an insulating tape, a heat insulation layer wraps the outer side of the second optical fiber, the installation frame comprises a shell fixed on the winding, a supporting plate is connected in the shell, the end of the supporting plate is in contact with the winding, the other end of the supporting plate is in contact with the optical fiber, the optical fiber is fixed on the shell through two buckles, a plurality of fixing points are arranged on the second optical fiber, and two insulating tapes are fixed on each fixing point in a crossed.
Preferably, the housing is movably clamped on the winding through a sliding sleeve, and the ratio of the distance from the end of the support plate contacting with the winding to the shaft joint to the distance from the end of the support plate contacting with the optical fiber to the shaft joint is 1: 3.
Preferably, the buckle includes the universal joint of fixing on the shell, is fixed with fixed cover on the universal joint, is fixed with the rubber inside lining in the fixed cover, and the length of rubber inside lining is greater than the length of fixed cover, is provided with the gasbag in the rubber inside lining, and the edge of rubber inside lining is provided with inclined plane portion, is provided with the spout in the inclined plane portion, and it is provided with the bracing piece to slide in the spout, and the bracing piece top coupling has the rubber pad, and the rubber pad contacts with optic fibre.
Preferably, the distance between two adjacent fixing points on the second optical fiber is equal to the distance between two buckles on the same shell.
Preferably, a silicone pad is filled between the insulating tape and the second optical fiber.
The technical scheme has the advantages that the th optical fiber and the second optical fiber are arranged, the thermal insulation layer is arranged on the second optical fiber, the temperature of the th optical fiber is corrected, the th optical fiber is fixed on the winding through the mounting frame, the deformation of the winding is transmitted to the th optical fiber through the supporting plate, the deformation of the winding is amplified by utilizing the lever action of the supporting plate, so that the detection precision is improved, the extrusion interference of the clamping structure on the th optical fiber can be reduced, and the detection precision is effectively improved.
Drawings
FIG. 1 is a block diagram of embodiments of the present invention.
Fig. 2 is a block diagram of a mount in accordance with embodiments of the invention.
FIG. 3 is a block diagram of the end of the support plate in contact with the optical fiber in embodiments of the present invention.
In the figure, 1, winding, 2, th optical fiber, 3, second optical fiber, 4, mounting rack, 5, heat insulation layer, 6, shell, 7, support plate, 8, buckle, 9, insulation tape, 10, sliding sleeve, 11, universal joint, 12, fixing sleeve, 13, rubber lining, 14, air bag, 15, inclined plane part, 16, sliding groove, 17, support rod, 18, rubber pad, 19, silica gel pad, 20, sliding plate, 21, arc-shaped elastic sheet, 22 and spring body.
Detailed Description
The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description and the description of the attached drawings, and the specific connection mode of each part adopts the conventional means of mature bolts, rivets, welding, sticking and the like in the prior art, and the detailed description is not repeated.
Referring to fig. 1-3, embodiments of the present invention include a winding 1, a th optical fiber 2 and a second optical fiber 3 are disposed outside the winding 1, the th optical fiber 2 is fixed on the winding 1 through a mounting bracket 4, the second optical fiber 3 is attached to the winding 1 through an insulating tape, a thermal insulation layer 5 is wrapped outside the second optical fiber 3, the mounting bracket 4 includes a housing 6 fixed on the winding 1, a support plate 7 is connected inside the housing 6, a end of the support plate 7 is in contact with the winding 1, another end of the support plate 7 is in contact with a th optical fiber 2, a rd optical fiber 2 is fixed on the housing 6 through two buckles 8, a plurality of fixing points are disposed on the second optical fiber 3, two insulating tapes 9 are fixed to the housing 6 in a crossed manner, the housing 6 is movably fastened on the winding 1 through a sliding bush 10, a distance from a end of the support plate 7 in contact with the winding 1 to a shaft joint and a distance from a end of the support plate 7 in contact with the th optical fiber 2 to the shaft joint is 1, a distance from a rubber cushion 13 disposed inside the inner lining 13, a rubber cushion 13 is disposed on the inner lining 13 of the inner lining of the supporting rubber cushion 12, a rubber cushion 13, a rubber cushion 16 is disposed on the inner lining 13 of the inner lining 13, a rubber cushion 15, a rubber cushion 16 disposed on the rubber cushion disposed on the inner lining 13, and a chute 13 disposed on the inner lining 13, and a chute 16, a rubber cushion disposed on the inner lining.
In addition, a movable sliding plate 20 is arranged at the end of the supporting plate 7, which is in contact with the th optical fiber 2, two arc-shaped elastic pieces 21 are symmetrically arranged on the sliding plate 20, the sliding plate 20 can adjust the relative positions of the arc-shaped elastic pieces 21 and the supporting plate 7 according to the contact angle between the supporting plate 7 and the th optical fiber 2, so that the arc-shaped elastic pieces 21 are ensured to be in full contact with the th optical fiber 2, the pressure application range of the th optical fiber 2 can be expanded by the arc-shaped elastic pieces 21, the optical fiber excessive deformation caused by single-point stress is avoided, the sliding plate 20 is connected with the supporting plate 7 through a spring body 22, and the spring body 22 can provide displacement damping force, so that the.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. 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. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
- The distributed optical fiber sensor arrangement structure comprises a winding (1) and is characterized in that a th optical fiber (2) and a second optical fiber (3) are arranged on the outer side of the winding (1), the th optical fiber (2) is fixed to the winding (1) through an installation frame (4), the second optical fiber (3) is attached to the winding (1) through an insulating tape, a heat insulation layer (5) wraps the outer side of the second optical fiber (3), the installation frame (4) comprises a shell (6) fixed to the winding (1), a supporting plate (7) is connected to the shell (6) in an internal connection mode, a end of the supporting plate (7) is in contact with the winding (1), the other end of the supporting plate (7) is in contact with the th optical fiber (2), the th optical fiber (2) is fixed to the shell (6) through two buckles (8), a plurality of fixing points are arranged on the second optical fiber (3), and two insulating tapes (9) are fixed to each.
- 2. The distributed optical fiber sensor arrangement of claim 1, wherein said housing (6) is movably clamped to the winding (1) by a sliding sleeve (10), and the ratio of the distance from end of the supporting plate (7) contacting the winding (1) to the axial joint point and the distance from end of the supporting plate (7) contacting the th optical fiber (2) to the axial joint point is 1: 3.
- 3. The distributed optical fiber sensor arrangement structure according to claim 2, wherein the buckle (8) comprises a universal joint (11) fixed on the housing (6), a fixed sleeve (12) is fixed on the universal joint (11), a rubber lining (13) is fixed in the fixed sleeve (12), the length of the rubber lining (13) is greater than that of the fixed sleeve (12), an air bag (14) is arranged in the rubber lining (13), an inclined plane part (15) is arranged at the edge of the rubber lining (13), a sliding groove (16) is arranged on the inclined plane part (15), a supporting rod (17) is arranged in the sliding groove (16) in a sliding manner, a rubber pad (18) is coupled to the top of the supporting rod (17) in a shaft mode, and the rubber pad (18) is in contact with the -th optical.
- 4. A distributed fibre optic sensor arrangement as claimed in claim 1 wherein the distance between two adjacent fixing points on the second fibre (3) is the same as the distance between two catches (8) on the same housing (6).
- 5. A distributed fibre optic sensor arrangement according to claim 4 wherein: and a silica gel pad (19) is filled between the insulating tape (9) and the second optical fiber (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164102.5A CN108375345B (en) | 2018-02-27 | 2018-02-27 | distributed optical fiber sensor arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810164102.5A CN108375345B (en) | 2018-02-27 | 2018-02-27 | distributed optical fiber sensor arrangement structure |
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| Publication Number | Publication Date |
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| CN108375345A CN108375345A (en) | 2018-08-07 |
| CN108375345B true CN108375345B (en) | 2020-01-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810164102.5A Active CN108375345B (en) | 2018-02-27 | 2018-02-27 | distributed optical fiber sensor arrangement structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113983944B (en) * | 2021-11-03 | 2022-10-21 | 国网辽宁省电力有限公司抚顺供电公司 | Transformer winding deformation detection device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3008788B1 (en) * | 2013-07-17 | 2018-01-26 | Agence Nationale Pour La Gestion Des Dechets Radioactifs | SELF-CALIBRATED OPTICAL FIBER MECHANICAL DEFORMATION SYSTEM AND METHODS OF CALIBRATING SUCH A SYSTEM |
| CN203798317U (en) * | 2014-01-16 | 2014-08-27 | 云南电力试验研究院（集团）有限公司电力研究院 | Voltage transformer winding monitoring system based on optical fiber sensing technologies |
| DE102014117079A1 (en) * | 2014-11-21 | 2016-05-25 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method and system for determining a mechanical deformation and / or a defect of a specimen |
| CN104678520A (en) * | 2014-12-30 | 2015-06-03 | 江苏通能信息有限公司 | Fire-resistant intelligent micro cable and manufacturing method thereof |
| CN206178221U (en) * | 2016-11-25 | 2017-05-17 | 义博通信设备集团股份有限公司 | Modified fiber groove says structure |
| CN106646097B (en) * | 2016-11-28 | 2019-07-02 | 华北电力大学 | Using the deformation of transformer winding on-line monitoring system of fiber Bragg grating strain sensor |
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| CN108375345A (en) | 2018-08-07 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20190103 Address after: 071000 619 Yonghua North Street, lotus pool, Baoding, Hebei Applicant after: North China Electric Power University (Baoding) Applicant after: State Grid Corporation of China Address before: 071000 619 Yonghua North Street, lotus pool, Baoding, Hebei Applicant before: North China Electric Power University (Baoding) |
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190827 Address after: No. 619 Yonghuabei Street, Lianchi District, Baoding City, Hebei Province Applicant after: North China Electric Power University (Baoding) Applicant after: State Grid Corporation of China Applicant after: State Grid Hebei Electric Power Co., Ltd. Address before: No. 619 Yonghuabei Street, Lianchi District, Baoding City, Hebei Province Applicant before: North China Electric Power University (Baoding) Applicant before: State Grid Corporation of China |
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| TR01 | Transfer of patent right |
Effective date of registration: 20201225 Address after: No.32, Haifu Road, Haikou, Hainan 570000 Patentee after: HAINAN POWER GRID Co.,Ltd. Patentee after: NORTH CHINA ELECTRIC POWER University (BAODING) Patentee after: STATE GRID CORPORATION OF CHINA Patentee after: STATE GRID HEBEI ELECTRIC POWER SUPPLY Co.,Ltd. Address before: 071000 619 Yonghua North Street, lotus pool, Baoding, Hebei Patentee before: NORTH CHINA ELECTRIC POWER University (BAODING) Patentee before: STATE GRID CORPORATION OF CHINA Patentee before: STATE GRID HEBEI ELECTRIC POWER SUPPLY Co.,Ltd. |
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| TR01 | Transfer of patent right |