CN107942215A - The extrinsic fabry perot fiber optic sensor of external attaching type and test platform - Google Patents
The extrinsic fabry perot fiber optic sensor of external attaching type and test platform Download PDFInfo
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- CN107942215A CN107942215A CN201711384211.XA CN201711384211A CN107942215A CN 107942215 A CN107942215 A CN 107942215A CN 201711384211 A CN201711384211 A CN 201711384211A CN 107942215 A CN107942215 A CN 107942215A
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- 239000000835 fiber Substances 0.000 title claims abstract description 65
- 238000012360 testing method Methods 0.000 title claims abstract description 22
- 239000010453 quartz Substances 0.000 claims abstract description 64
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 64
- 230000008878 coupling Effects 0.000 claims abstract description 27
- 238000010168 coupling process Methods 0.000 claims abstract description 27
- 238000005859 coupling reaction Methods 0.000 claims abstract description 27
- 238000001514 detection method Methods 0.000 claims abstract description 26
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims abstract description 21
- 229910001172 neodymium magnet Inorganic materials 0.000 claims abstract description 15
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 8
- 238000000576 coating method Methods 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 15
- 239000002828 fuel tank Substances 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 6
- 235000014121 butter Nutrition 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000002310 reflectometry Methods 0.000 claims description 4
- 229920002545 silicone oil Polymers 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000005622 photoelectricity Effects 0.000 claims 1
- 230000005684 electric field Effects 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
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- 238000011161 development Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1218—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing using optical methods; using charged particle, e.g. electron, beams or X-rays
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- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The extrinsic fabry perot fiber optic sensor of external attaching type and test platform, belong to power transformer partial discharge detection technique field.Technical essential：The annular groove that the center of the high-strength magnet fitting substrate of neodymium iron boron is carved with, as vibration coupling unit；Quartz diaphragm is fixed on the surface of vibration coupling unit；Optical reflectance coating is coated with quartz diaphragm, quartz capillary is installed on quartz diaphragm, quartz capillary is placed in quartz capillary as Fabry Perot chamber, fiber core, metal ring casing is sleeved on outside quartz capillary, is fixed between metal ring casing and quartz capillary by filler；Partial discharge source is placed in oil tank of transformer, and partial discharge source is immersed in transformer oil；Test platform, signal progress joint-detection of raising one's voice to its utmost of being played a game using the extrinsic fabry perot fiber optic sensor of external attaching type and piezoelectric ceramics acoustic emission sensor.Detection sensitivity of the present invention is high, and from live high-strength electric field magnetic field influence, it can be achieved that real-time online detects.
Description
Technical field
The present invention relates to a kind of extrinsic fabry perot fiber optic sensor and test platform, and in particular to a kind of external patch
Box-like extrinsic fabry perot fiber optic sensor and test platform, it is real for large-scale power transformer shelf depreciation ultrasonic signal
When on-line checking, belong to power transformer partial discharge detection technique field.
Background technology
With the fast development of 21st century science and technology, society is higher and higher for the demand of electric power energy, large-scale power transformation
The construction stood is further speeded up, and power transformer total installation of generating capacity quickly increases, and the safe and stable operation of power transformer is just shown
It is particularly important that obtaining.
On-line checking can not be realized for the conventional method of power transformer partial discharge detection, therefore for type local-discharge ultrasonic signal
Detection have received widespread attention.The method more approved for the detection of power transformer partial discharge ultrasonic signal is divided into following two
Kind；First method is to utilize piezoceramic transducer, it is detected type local-discharge ultrasonic signal by oil tank of transformer wall outside is placed on,
The method installation simple operations are convenient, but sensor transducing head is that acoustical signal is converted to electric signal, this just makes it hold very much
It is vulnerable to live high-strength electric field and the interference effect in magnetic field, and this detection method can not realize on-line real-time measuremen, only
Partial discharge detection can be carried out to transformer by way of regular visit；Second method is to utilize extrinsic Fabry Perot light
Fiber sensor, detection partial discharge acoustical signal, the method inside power transformer are installed in when power transformer is produced and assembled
Although not only realize that the real-time online detection of power transformer partial discharge ultrasonic signal also assures that detection signal is high-strength from scene
Electric field and magnetic interference, but the production design difficulty of power transformer is significantly increased, and extrinsic Fabry Perot
The security reliability deficiency of fibre optical sensor long period of soaking its structure in high temperature and with certain corrosive transformer oil, and
And such a installation method of power transformer for operation of having gone into operation and do not apply to.
It would therefore be highly desirable to design a kind of extrinsic method for being fitted in detection type local-discharge ultrasonic signal on the outside of power transformer tank wall
Bripello fiber-optic sensor probe structure and test platform.
The content of the invention
The brief overview on the present invention is given below, in order to provide on the basic of certain aspects of the invention
Understand.It should be appreciated that this general introduction is not the exhaustive general introduction on the present invention.It is not intended to determine the pass of the present invention
Key or pith, nor is it intended to limit the scope of the present invention.Its purpose only provides some concepts in simplified form,
In this, as the preamble in greater detail discussed later.
In consideration of it, in order to overcome above-mentioned technical problem, it is an object of the invention to surpass for existing power transformer partial discharge
The deficiency of acoustical signal processing technology, there is provided a kind of extrinsic fabry perot fiber optic sensor of external attaching type and test are flat
Platform, suitable for having gone into operation operation and power transformer just in production is installed and used, detection sensitivity is sensed with piezoelectric ceramics
Device is close, and real-time online detection can be achieved from the influence in live high-strength electric field magnetic field.
Scheme one：The present invention provides a kind of external extrinsic fabry perot fiber optic sensor of attaching type, including neodymium iron
Boron high-strength magnet fitting substrate, quartz diaphragm, quartz capillary, fiber core and metal ring casing；
The high-strength magnet fitting substrate of neodymium iron boron is circular fitting substrate, the high-strength magnet fitting substrate of neodymium iron boron
Center is carved with a diameter of 1.8mm, and depth is the annular groove of 100um, as vibration coupling unit；
The quartz diaphragm is fixed on the surface of vibration coupling unit, and the central axis and vibration coupling of quartz diaphragm
The central axis of unit overlaps, and quartz diaphragm together form vibration coupling chamber with vibration coupling unit；
Optical reflectance coating is coated with the quartz diaphragm, quartz capillary is installed on quartz diaphragm, quartz capillary
As Fabry Perot chamber, fiber core is placed in quartz capillary, and the metal ring casing is sleeved on outside quartz capillary,
The bottom of metal ring casing is installed on quartz diaphragm, is consolidated between metal ring casing and quartz capillary by filler
It is fixed.
Further：The quartz diaphragm is diameter 3mm, the circular sheet body of thickness 40um.
Further：The quartz diaphragm is fixed on by ultra-violet curing agent on the surface of vibration coupling unit.
Further：The optical reflectance coating of 50 percent reflectivity is coated with the quartz diaphragm.
Further：Fixed between the metal ring casing and quartz capillary by ceramic fillers.
Scheme two：A kind of test using the extrinsic fabry perot fiber optic sensor of external attaching type proposed by the present invention
Platform, this method are that the extrinsic fabry perot fiber optic sensor of external attaching type described in based on scheme one is realized, test
Platform specifically includes：The extrinsic fabry perot fiber optic sensor of external attaching type, piezoelectric ceramics acoustic emission sensor, partial discharge
Source, oil tank of transformer, digital oscilloscope, signal amplifier, fiber splitter, photoelectric converter, laser driven light source, coupling electricity
Hold, detect impedance and partial discharge detector；
The partial discharge source is placed in oil tank of transformer, and oil tank of transformer injection transformer oil, transformer oil is immersed in partial discharge source
In；Piezoelectric ceramics acoustic emission sensor is fixed on oil tank of transformer with the extrinsic fabry perot fiber optic sensor of external attaching type
Both sides, and piezoelectric ceramics acoustic emission sensor and the extrinsic fabry perot fiber optic sensor of external attaching type each with partial discharge source
Distance it is equal；The high-pressure side in partial discharge source is connected with step-up transformer high-voltage connection, ground terminal and the fuel tank grounding lead in partial discharge source
Line is connected, piezoelectric ceramics acoustic emission sensor and the respective sensor of the extrinsic fabry perot fiber optic sensor of external attaching type
Signal output part, which is linked on same digital oscilloscope, carries out crawl signal data, piezoelectric ceramics acoustic emission sensor and numeral
Signal amplifier, the external extrinsic fabry perot fiber optic sensor of attaching type are additionally provided with the signal path output of oscillograph
With being additionally provided with fiber splitter, photoelectric converter, the letter of the fiber splitter on the signal path output of digital oscilloscope
Number source is laser driven light source, the high-pressure side with being parallel with coupled capacitor at step-up transformer high-voltage connection and detecting impedance,
Partial discharge detection instrument is also electrically connected with parallel circuit.
Further：The partial discharge source is board-to-board electrode.
Further：The binding face of the oil tank of transformer and the extrinsic fabry perot fiber optic sensor of external attaching type
On be coated with butter or silicone oil.So set, making sensor cover and oil tank of transformer is even closer is bonded.
Beneficial effect：
A kind of extrinsic method cloth for being fitted in detection type local-discharge ultrasonic signal on the outside of power transformer tank wall of present invention design
In Perot fiber optic sensor sonde configuration, this sound construction is reliable, suitable for having gone into operation operation and electric power just in production becomes
Depressor is installed and used, and detection sensitivity is high, and from live high-strength electric field magnetic field influence, it can be achieved that real-time online detects.
Brief description of the drawings
Fig. 1 is the structure diagram of the extrinsic fabry perot fiber optic sensor of external attaching type of the present invention；
Fig. 2 is partial enlarged view at the A of Fig. 1；
Fig. 3 is the stereogram that the high-strength magnet of neodymium iron boron is bonded substrate；
Fig. 4 is the front view that the high-strength magnet of neodymium iron boron is bonded substrate；
Fig. 5 is put into structure diagram after removing metal ring casing for fibre optical sensor；
Fig. 6 is the test platform block diagram using the extrinsic fabry perot fiber optic sensor of external attaching type of the present invention.
In figure：The high-strength magnet fitting substrate of 1 neodymium iron boron, 2 quartz diaphragms, 3 quartz capillaries, 4 fiber cores, 5 beckets
Shape casing, 6 fillers, the extrinsic fabry perot fiber optic sensor of 7 external attaching types, 8 piezoelectric ceramics acoustic emission sensors, 9
Partial discharge source, 10 oil tank of transformer, 11 digital oscilloscopes, 12 signal amplifiers, 13 fiber splitters, 14 photoelectric converters, 15 are swashed
Optical drive light source, 16 coupled capacitors, 17 detection impedances, 18 partial discharge detection instrument, 19 transformer oil.
Embodiment
The one exemplary embodiment of the present invention is described hereinafter in connection with attached drawing.For clarity and conciseness,
All features of actual implementation mode are not described in the description.It should be understood, however, that developing any this actual implementation
It must be made during example much specific to the decision of embodiment, to realize the objectives of developer, for example, symbol
Conjunction and system and those relevant restrictive conditions of business, and these restrictive conditions may have with the difference of embodiment
Changed.In addition, it will also be appreciated that although development is likely to be extremely complex and time-consuming, to having benefited from the present invention
For those skilled in the art of disclosure, this development is only routine task.
Herein, it is also necessary to which explanation is a bit, in order to avoid having obscured the present invention because of unnecessary details, in the accompanying drawings
The apparatus structure closely related with scheme according to the present invention and/or processing step are illustrate only, and is eliminated and the present invention
The little other details of relation.
Embodiment 1：A kind of extrinsic Fabry Perot optical fiber of external attaching type is present embodiments provided as shown in attached drawing 1-5
Sensor, including neodymium iron boron high-strength magnet fitting substrate 1, quartz diaphragm 2, quartz capillary 3, fiber core 4 and metal ring
Casing 5；
The high-strength magnet fitting substrate 1 of neodymium iron boron is circular fitting substrate, the high-strength magnet fitting substrate 1 of neodymium iron boron
Center be carved with a diameter of 1.8mm, depth is the annular groove of 100um, as vibration coupling unit；
The quartz diaphragm 2 is fixed on the surface of vibration coupling unit, and the central axis of quartz diaphragm 2 and vibration coupling
The central axis for closing unit overlaps, and quartz diaphragm 2 together form vibration coupling chamber with vibration coupling unit；
Optical reflectance coating is coated with the quartz diaphragm 2, quartz capillary 3 is installed on quartz diaphragm, quartzy capillary
Pipe 3 is used as Fabry Perot chamber, and fiber core 4 is placed in quartz capillary 3, and the metal ring casing 5 is sleeved on quartzy capillary
Outside pipe 3, the bottom of metal ring casing 5 is installed on quartz diaphragm 2, is led between metal ring casing 5 and quartz capillary 3
Filler 6 is crossed to fix.
More specifically：The quartz diaphragm 2 is diameter 3mm, the circular sheet body of thickness 40um.
More specifically：The quartz diaphragm 2 is fixed on by ultra-violet curing agent on the surface of vibration coupling unit.
More specifically：The optical reflectance coating of 50 percent reflectivity is coated with the quartz diaphragm 2.
More specifically：Fixed between the metal ring casing 5 and quartz capillary 3 by ceramic fillers.
Transformer oil box outer wall can not be directly rapidly secured at using the fitting substrate of iron structure in the present embodiment, is now selected
Take the high-strength magnet of neodymium iron boron to use substrate by sensor, sensor is directly fitted tightly over transformer oil box outer wall,
It is easy to removal and installation.
To ensure that fitting substrate has enough suction and rigid and easy to process, its structure size is not easy excessively thin too small.
The high-strength magnet of neodymium iron boron for now choosing diameter 20mm thickness 2mm is bonded substrate for sensor.Using laser-engraving technique to sensing
Device substrate is processed, and heart position carves out the vibration coupling unit that an a diameter of 1.8mm depth is 100um wherein.Base
Piece overall structure is as shown in Figure 3 and Figure 4.
Using ultra-violet curing agent, the quartz diaphragm that a diameter of 3mm thickness is 40um is fixed on substrate and is carved with vibration coupling
On the face of unit, and circular quartz its center axis is set to be overlapped with vibration coupling unit center axis.Structure diagram such as Fig. 2
It is shown.Quartz diaphragm together form vibration coupling chamber with vibration coupling unit, when ultrasonic signal is delivered to sensor fitting base
During on piece, quartz diaphragm neighboring is middle to act on the lower formation of ultrasonic signal excitation due to vibration coupling chamber by fixed constraint
Forced vibration.
The quartz diaphragm being fixed on sensor vibration substrate is plated to the optical reflectance coating of 50 percent reflectivity.Utilize
Quartz capillary makes Fabry Perot chamber as fixed constraint, its structure diagram is as shown in Figure 5.
Sensor external rigidity supporting structure designs, since directly capillary glass is fixed on sensor substrate, its
Structure is not firm and is easily subject to for vibration effect, so need to be reinforced to its entirety.Applied metal processing technology makes
One metal ring casing installation on a sensor, fills fixed constraint material between metal ring casing and capillary glass,
Make the two close contact, further strengthen the integrally-built stability of sensor.Its structure diagram is as shown in Figure 1.
Embodiment 2：Present embodiments provide as shown in Figure 6 a kind of using the extrinsic Fabry Perot light of external attaching type
The test platform of fiber sensor, test platform specifically include：The extrinsic fabry perot fiber optic sensor 7 of external attaching type, pressure
Electroceramics acoustic emission sensor 8, partial discharge source 9, oil tank of transformer 10, digital oscilloscope 11, signal amplifier 12, fiber splitter
13rd, photoelectric converter 14, laser driven light source 15, coupled capacitor 16, detection impedance 17 and partial discharge detector 18；
The partial discharge source 9 is placed in oil tank of transformer 10, and oil tank of transformer 1O injection transformers oil 19, partial discharge source 9 is immersed
In transformer oil；The fabry perot fiber optic sensor 7 extrinsic with external attaching type of piezoelectric ceramics acoustic emission sensor 8 is fixed on
10 both sides of oil tank of transformer, and piezoelectric ceramics acoustic emission sensor 8 and the extrinsic Fabry Perot Fibre Optical Sensor of external attaching type
Device 7 is each equal with the distance in partial discharge source 9；The high-pressure side in partial discharge source 9 is connected with step-up transformer high-voltage connection, partial discharge source 9
Ground terminal is connected with fuel tank ground lead, piezoelectric ceramics acoustic emission sensor 8 and the extrinsic Fabry Perot light of external attaching type
The respective sensor signal output terminal of fiber sensor 7 is linked on same digital oscilloscope 11 and carries out crawl signal data, pressure
Electroceramics acoustic emission sensor 8 on the signal path output of digital oscilloscope 11 with being additionally provided with signal amplifier 12, external patch
Box-like extrinsic fabry perot fiber optic sensor 7 on the signal path output of digital oscilloscope 11 with being additionally provided with optical fibre light splitting
Device 13, photoelectric converter 14, the signal source of the fiber splitter 13 is laser driven light source 15, and the high-pressure side becomes with boosting
Coupled capacitor 16 and detection impedance 17 are parallel with depressor high-voltage connection, partial discharge detection instrument 18 is also electrically connected with parallel circuit.
More specifically：The partial discharge source 9 is board-to-board electrode.
More specifically：The oil tank of transformer 10 and the extrinsic fabry perot fiber optic sensor 7 of external attaching type
Butter or silicone oil are coated with binding face.So set, making sensor cover and oil tank of transformer is even closer is bonded.
The present embodiment uses the extrinsic fabry perot fiber optic sensor of external attaching type by building partial discharge test platform
Joint-detection, and contrast test result are carried out with piezoelectric ceramics acoustic emission sensor sound reproduction signal of playing a game.Test platform entirety frame
Figure is as shown in Figure 6.
Partial discharge source used in test platform is board-to-board electrode, this electrode is immersed in the fuel tank for filling with transformer oil,
Fuel tank size is 50cm*50cm*50cm (length, width and height).By piezoelectric ceramics acoustic emission sensor and the extrinsic method cloth of external attaching type
In Perot fiber optic sensor be fixed on fuel tank both sides, make it each equal with the distance in partial discharge source, to ensure that it is each received
Type local-discharge ultrasonic signal all pass through identical acoustic attenuation road strength.Board-to-board electrode high-pressure side is connected with step-up transformer high-voltage connection,
Ground terminal is connected with fuel tank ground lead, and two sensor signal output terminals are linked to same oscillograph crawl signal data.
High pressure terminal voltage is risen into 25kV during test, board-to-board electrode partial discharge phenomenon occurs and produced with ultrasonic signal.
The type local-discharge ultrasonic signal that two sensors receive is read by digital oscilloscope at this time, and to the extrinsic method of external attaching type
Bripello fibre optical sensor carries out fast Fourier change, external by the signal analysis captured to two sensors
Attaching type sensor, can preferably detect type local-discharge ultrasonic signal.
When carrying out partial discharge on-line monitoring for the large-scale power transformer gone into operation, sensor directly can be fitted in change
On depressor fuel tank outer wall, binding face smears suitable butter or silicone oil, makes sensor cover and transformer face is even closer is bonded.Root
According to the size of transformer time size, it can suitably arrange that multiple sensors in diverse location, are realized to the effective of transformer partial discharge
Monitoring, and branched sensor can also effectively position transformer partial discharge point.For transformer just in production, this
Installation method is equally applicable, and more preferable installation site can be reserved according to actual conditions.
Although disclosed embodiment is as above, its content is only to facilitate understand the technical side of the present invention
Case and the embodiment used, are not intended to limit the present invention.Any those skilled in the art to which this invention pertains, not
On the premise of departing from disclosed core technology scheme, any modification can be made in the form and details of implementation and is become
Change, but the protection domain that the present invention is limited, the scope that the appended claims that must still be subject to limits.
Claims (8)
1. the external extrinsic fabry perot fiber optic sensor of attaching type, it is characterised in that：Including the high-strength magnet fitting of neodymium iron boron
Substrate (1), quartz diaphragm (2), quartz capillary (3), fiber core (4) and metal ring casing (5)；
The high-strength magnet fitting substrate (1) of neodymium iron boron is circular fitting substrate, the high-strength magnet fitting substrate (1) of neodymium iron boron
Center be carved with a diameter of 1.8mm, depth is the annular groove of 100um, as vibration coupling unit；
The quartz diaphragm (2) is fixed on the surface of vibration coupling unit, and the central axis of quartz diaphragm (2) and vibration coupling
The central axis for closing unit overlaps, and quartz diaphragm (2) together form vibration coupling chamber with vibration coupling unit；
Optical reflectance coating is coated with the quartz diaphragm (2), quartz capillary (3) is installed on quartz diaphragm, quartzy capillary
Pipe (3) is used as Fabry Perot chamber, and fiber core (4) is placed in quartz capillary (3), and the metal ring casing (5) is sleeved on
Quartz capillary (3) is exterior, and the bottom of metal ring casing (5) is installed on quartz diaphragm (2), metal ring casing (5) with
It is fixed by filler (6) between quartz capillary (3).
2. the extrinsic fabry perot fiber optic sensor of external attaching type according to claim 1, it is characterised in that：It is described
Quartz diaphragm (2) is diameter 3mm, the circular sheet body of thickness 40um.
3. the extrinsic fabry perot fiber optic sensor of external attaching type according to claim 1, it is characterised in that：It is described
Quartz diaphragm (2) is fixed on by ultra-violet curing agent on the surface of vibration coupling unit.
4. the extrinsic fabry perot fiber optic sensor of external attaching type according to claim 1, it is characterised in that：It is described
The optical reflectance coating of 50 percent reflectivity is coated with quartz diaphragm (2).
5. the extrinsic fabry perot fiber optic sensor of external attaching type according to claim 1, it is characterised in that：It is described
Fixed between metal ring casing (5) and quartz capillary (3) by ceramic fillers.
6. using the test platform of the extrinsic fabry perot fiber optic sensor of external attaching type, which is to be based on right
It is required that any external extrinsic fabry perot fiber optic sensor realization of attaching type in 1~5, it is characterised in that：Test
Platform specifically includes：The external extrinsic fabry perot fiber optic sensor of attaching type (7), piezoelectric ceramics acoustic emission sensor (8),
Partial discharge source (9), oil tank of transformer (10), digital oscilloscope (11), signal amplifier (12), fiber splitter (13), photoelectricity turn
Parallel operation (14), laser driven light source (15), coupled capacitor (16), detection impedance (17) and partial discharge detector (18)；
The partial discharge source (9) is placed in oil tank of transformer (10), and the interior injection transformer of oil tank of transformer (1O) is oily (19), partial discharge source
(9) immerse in transformer oil；Piezoelectric ceramics acoustic emission sensor (8) and the extrinsic Fabry Perot Fibre Optical Sensor of external attaching type
Device (7) is fixed on oil tank of transformer (10) both sides, and piezoelectric ceramics acoustic emission sensor (8) and the extrinsic method cloth of external attaching type
In Perot fiber optic sensor (7) it is each equal with the distance of partial discharge source (9)；The high-pressure side in partial discharge source (9) is high with step-up transformer
Voltage lead wires are connected, and the ground terminal of partial discharge source (9) is connected with fuel tank ground lead, piezoelectric ceramics acoustic emission sensor (8) with it is external
The respective sensor signal output terminal of the extrinsic fabry perot fiber optic sensor of attaching type (7) is linked to same number of units word oscillography
Crawl signal data, the signal output road of piezoelectric ceramics acoustic emission sensor (8) and digital oscilloscope (11) are carried out on device (11)
Signal amplifier (12), the external extrinsic fabry perot fiber optic sensor of attaching type (7) and digital oscillography are additionally provided with footpath
Fiber splitter (13), photoelectric converter (14), the fiber splitter are additionally provided with the signal path output of device (11)
(13) signal source is laser driven light source (15), and the high-pressure side at step-up transformer high-voltage connection with being parallel with coupled capacitor
(16) and impedance (17) is detected, partial discharge detection instrument (18) is also electrically connected with parallel circuit.
7. the test platform according to claim 6 using the extrinsic fabry perot fiber optic sensor of external attaching type,
It is characterized in that：The partial discharge source (9) is board-to-board electrode.
8. the test platform according to claim 6 using the extrinsic fabry perot fiber optic sensor of external attaching type,
It is characterized in that：The oil tank of transformer (10) is bonded with external attaching type extrinsic fabry perot fiber optic sensor (7)
Butter or silicone oil are coated with face.
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| CN109709453A (en) * | 2018-12-27 | 2019-05-03 | 广东电网有限责任公司佛山供电局 | A kind of ultraviolet light ultrasonic wave composite arc discharging detecting system |
| CN111537848A (en) * | 2020-05-18 | 2020-08-14 | 华北电力大学 | Optical fiber detection method and device for partial discharge in GIS |
| CN111812465A (en) * | 2020-06-28 | 2020-10-23 | 大唐东北电力试验研究院有限公司 | External transformer partial discharge sensor device based on extrinsic optical fiber method |
| CN112345894A (en) * | 2020-09-30 | 2021-02-09 | 陈梦滢 | F-P sensor suitable for liquid environment partial discharge ultrasonic detection and preparation method thereof |
| CN113567818A (en) * | 2021-08-16 | 2021-10-29 | 重庆大学 | Fabry-Perot type partial discharge sensing device and method based on cantilever support structure |
| CN114167236A (en) * | 2021-11-30 | 2022-03-11 | 大唐东北电力试验研究院有限公司 | Multi-shape-adaptive external partial discharge detection device and detection method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032587A (en) * | 2006-07-31 | 2008-02-14 | Meidensha Corp | Ae sensor using interference-type optical fiber, and partial discharge measuring device by ae sensor |
| CN101620003A (en) * | 2009-08-07 | 2010-01-06 | 西北工业大学 | Fiber grating Fabry-Perot cavity vibration sensor and vibration measurement system thereof |
| CN101762318A (en) * | 2010-01-21 | 2010-06-30 | 上海大学 | Optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device |
| EP2472275A2 (en) * | 2010-12-28 | 2012-07-04 | BAM Bundesanstalt für Materialforschung und -prüfung | Fibre optic sensor and measuring device with a fibre optic sensor |
| CN103234620A (en) * | 2013-04-28 | 2013-08-07 | 哈尔滨理工大学 | Extrinsic optical fiber Fabry-Perot acoustic emission sensor, ultrasonic detection device comprising sensor and use method of sensor |
| CN105021271A (en) * | 2015-07-08 | 2015-11-04 | 华中科技大学 | Optical fiber EFPI infrasonic wave sensor and infrasonic sound signal detection system |
| CN105066895A (en) * | 2015-03-20 | 2015-11-18 | 电子科技大学 | Optical fiber fabry-perot strain sensor, sensing system and sensor manufacturing method |
| CN105182190A (en) * | 2015-04-27 | 2015-12-23 | 国家电网公司 | Transformer partial discharge detection method based on optical fiber external cavity fabry-perot sensors |
| CN105222883A (en) * | 2015-10-26 | 2016-01-06 | 国家电网公司 | Diaphragm manifold type extrinsic Fiber Optic Sensor FP sensor probe |
| CN105629143A (en) * | 2016-01-07 | 2016-06-01 | 国家电网公司 | Optical method-Perot partial discharge sensor installation method at large-scale power transformer clamp member portion |
| CN207586357U (en) * | 2017-12-20 | 2018-07-06 | 哈尔滨理工大学 | The extrinsic fabry perot fiber optic sensor of external attaching type and test platform |
-
2017
- 2017-12-20 CN CN201711384211.XA patent/CN107942215A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008032587A (en) * | 2006-07-31 | 2008-02-14 | Meidensha Corp | Ae sensor using interference-type optical fiber, and partial discharge measuring device by ae sensor |
| CN101620003A (en) * | 2009-08-07 | 2010-01-06 | 西北工业大学 | Fiber grating Fabry-Perot cavity vibration sensor and vibration measurement system thereof |
| CN101762318A (en) * | 2010-01-21 | 2010-06-30 | 上海大学 | Optical fiber extrinsic Fabry-Perot interference ultrasonic sensing and detection device |
| EP2472275A2 (en) * | 2010-12-28 | 2012-07-04 | BAM Bundesanstalt für Materialforschung und -prüfung | Fibre optic sensor and measuring device with a fibre optic sensor |
| CN103234620A (en) * | 2013-04-28 | 2013-08-07 | 哈尔滨理工大学 | Extrinsic optical fiber Fabry-Perot acoustic emission sensor, ultrasonic detection device comprising sensor and use method of sensor |
| CN105066895A (en) * | 2015-03-20 | 2015-11-18 | 电子科技大学 | Optical fiber fabry-perot strain sensor, sensing system and sensor manufacturing method |
| CN105182190A (en) * | 2015-04-27 | 2015-12-23 | 国家电网公司 | Transformer partial discharge detection method based on optical fiber external cavity fabry-perot sensors |
| CN105021271A (en) * | 2015-07-08 | 2015-11-04 | 华中科技大学 | Optical fiber EFPI infrasonic wave sensor and infrasonic sound signal detection system |
| CN105222883A (en) * | 2015-10-26 | 2016-01-06 | 国家电网公司 | Diaphragm manifold type extrinsic Fiber Optic Sensor FP sensor probe |
| CN105629143A (en) * | 2016-01-07 | 2016-06-01 | 国家电网公司 | Optical method-Perot partial discharge sensor installation method at large-scale power transformer clamp member portion |
| CN207586357U (en) * | 2017-12-20 | 2018-07-06 | 哈尔滨理工大学 | The extrinsic fabry perot fiber optic sensor of external attaching type and test platform |
Non-Patent Citations (1)
| Title |
|---|
| 张伟超: "液-固复合绝缘局放声发射光纤传感检测技术研究", 中国博士学位论文全文数据库工程科技Ⅱ辑, vol. 2016, no. 05, pages 0056 - 0062 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109709453A (en) * | 2018-12-27 | 2019-05-03 | 广东电网有限责任公司佛山供电局 | A kind of ultraviolet light ultrasonic wave composite arc discharging detecting system |
| CN111537848A (en) * | 2020-05-18 | 2020-08-14 | 华北电力大学 | Optical fiber detection method and device for partial discharge in GIS |
| CN111812465A (en) * | 2020-06-28 | 2020-10-23 | 大唐东北电力试验研究院有限公司 | External transformer partial discharge sensor device based on extrinsic optical fiber method |
| CN112345894A (en) * | 2020-09-30 | 2021-02-09 | 陈梦滢 | F-P sensor suitable for liquid environment partial discharge ultrasonic detection and preparation method thereof |
| CN112345894B (en) * | 2020-09-30 | 2023-12-15 | 陈梦滢 | F-P sensor suitable for liquid environment partial discharge ultrasonic detection and preparation method |
| CN113567818A (en) * | 2021-08-16 | 2021-10-29 | 重庆大学 | Fabry-Perot type partial discharge sensing device and method based on cantilever support structure |
| CN113567818B (en) * | 2021-08-16 | 2024-05-03 | 重庆大学 | Fabry-Perot partial discharge sensing device and method based on cantilever supporting structure |
| CN114167236A (en) * | 2021-11-30 | 2022-03-11 | 大唐东北电力试验研究院有限公司 | Multi-shape-adaptive external partial discharge detection device and detection method |
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