CN109387760A - A kind of shelf depreciation quantitative detection system and method based on fiber grating - Google Patents
A kind of shelf depreciation quantitative detection system and method based on fiber grating Download PDFInfo
- Publication number
- CN109387760A CN109387760A CN201811631859.7A CN201811631859A CN109387760A CN 109387760 A CN109387760 A CN 109387760A CN 201811631859 A CN201811631859 A CN 201811631859A CN 109387760 A CN109387760 A CN 109387760A
- Authority
- CN
- China
- Prior art keywords
- fiber grating
- giant magnetostrictive
- magnetostrictive rod
- fiber
- partial discharge
- 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.)
- Pending
Links
- 239000000835 fiber Substances 0.000 title claims abstract description 101
- 238000001514 detection method Methods 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000013307 optical fiber Substances 0.000 claims abstract description 33
- 239000000523 sample Substances 0.000 claims abstract description 24
- 238000009434 installation Methods 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 239000004065 semiconductor Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 7
- 230000009471 action Effects 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 4
- 238000009413 insulation Methods 0.000 description 4
- 239000003921 oil Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000006731 degradation reaction Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000004092 self-diagnosis Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
- G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
- G01R15/24—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using light-modulating devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of AC or of pulses
-
- 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
- G01R31/1227—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 of components, parts or materials
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
This application discloses a kind of shelf depreciation quantitative detection system and method based on fiber grating, the detection system includes sequentially connected laser, fiber coupler, current probe, photoelectric converter and data collecting card, wherein, current probe includes screwed pipe, giant magnetostrictive rod and fiber grating, and giant magnetostrictive rod and fiber grating are both secured in screwed pipe；Fiber grating is fixed on giant magnetostrictive rod, and the axial axis of fiber grating and the axial axis of giant magnetostrictive rod coincide；Laser is connect by optical fiber with fiber grating, and fiber grating is connect by optical fiber with data collecting card.When giant magnetostrictive rod is flexible along axial generation under the action of external magnetic field, its strain generated is transmitted on fiber grating, strain causes fiber grating length to change, so that the central wavelength of reflected light changes, by the variation for measuring reflected light, the size of tested electric current can be obtained, there is preferable Partial Discharge Detection sensitivity.
Description
Technical field
This application involves electrical equipment online monitoring technical field more particularly to a kind of shelf depreciations based on fiber grating
Quantitative detection system and method.
Background technique
Shelf depreciation, which refers to, occurs the initial of electric discharge phenomena and insulation degradation caused by partial breakdown in dielectric
Sign, it will aggravate the development of insulation degradation, and eventually leads to running quickly for entire insulation system and burst.When shelf depreciation occurs for medium
When, simultaneously some new chemical products occur for phenomena such as generating electric pulse, electromagnetic wave, ultrasonic wave, light, hot-spot, with this phase
Corresponding pulse current detection method, superfrequency detection method, ultrasonic Detection Method etc. occur, wherein pulse current detection method can
The quantitative analysis for preferably realizing shelf depreciation is the important indicator for analyzing insulation degradation Chengdu.
Rogowski coil when traditional pulse current detects used core element, in contrast, full optical-fiber current detects
Method is good with transient characterisitics, interactivity is strong, can digitize, have self diagnosis detectability and good anti-interference ability
Etc. a series of unique advantages.Traditional fibre optic current sensor be designed based on Faraday magnetooptical effect, its working principle is that
Faraday rotation after measured conductor is powered, using conductor as axis, by optical fiber around lopping, due to the effect of external magnetic field, in optical fiber
Angle changes, and can measure electric current indirectly by measuring its knots modification.
But the stochastic linear generated in this fiber-optic current sensor by external environmental interference (vibration, temperature change) is double
Refraction can generate adverse effect to system performance.
Summary of the invention
This application provides a kind of shelf depreciation quantitative detection system and method based on fiber grating, to solve extraneous ring
Border interference leads to the problem of adverse effect to current optical fibre current sensor system performance.
In order to solve the above-mentioned technical problem, the embodiment of the present application discloses following technical solution:
In a first aspect, the embodiment of the present application discloses a kind of shelf depreciation quantitative detection system based on fiber grating, packet
Include sequentially connected laser, fiber coupler, current probe, photoelectric converter and data collecting card, wherein
The current probe includes screwed pipe, giant magnetostrictive rod and fiber grating, the giant magnetostrictive rod and optical fiber
Grating is both secured in the screwed pipe；The fiber grating is fixed on the giant magnetostrictive rod, the fiber grating
Axial axis and the axial axis of the giant magnetostrictive rod coincide.
Optionally, the current probe further includes mounting groove, and the medial surface of the mounting groove is provided with multiple pulleys, described
Giant magnetostrictive rod is fixed in the mounting groove, the outer surface of the giant magnetostrictive rod and the pulley contact.
Optionally, the bottom centre of the giant magnetostrictive rod is fixed on the mounting groove.
Optionally, the medial surface of the mounting groove is provided with oil reservoir, the outer surface of the giant magnetostrictive rod and the oil
Layer contact.
Optionally, the laser is connect by the fiber coupler with the input terminal of the current probe, the electricity
The output end of stream probe is connect by the fiber coupler with the input terminal of the photoelectric converter；
The output end of the photoelectric converter is connect with the data collecting card.
Optionally, the laser is the semiconductor laser that center wavelength is 1550nm.
Optionally, the central wavelength of the fiber grating is 1550nm.
Second aspect, the embodiment of the present application also provides a kind of shelf depreciation quantitative detecting method based on fiber grating,
The described method includes:
Shelf depreciation quantitative detection system based on fiber grating is installed to the iron core grounding lead of electrical equipment,
In, the shelf depreciation quantitative detection system based on fiber grating is system described in first aspect；
Establish the calibration relationship between current parameter and the partial discharge quantity of the electrical equipment；
Detect the pulse current of PD waveform of the electrical equipment；
Partial discharge quantity is determined according to the calibration relationship and the pulse current of PD waveform.
Compared with prior art, the application has the beneficial effect that
Shelf depreciation quantitative detection system provided by the present application based on fiber grating includes sequentially connected laser, light
Fine coupler, current probe, photoelectric converter and data collecting card, wherein current probe includes screwed pipe, giant magnetostrictive rod
With fiber grating, giant magnetostrictive rod and fiber grating are both secured in screwed pipe；Fiber grating is fixed on giant magnetostrictive rod
On, the axial axis of fiber grating and the axial axis of giant magnetostrictive rod coincide.Shelf depreciation provided by the present application is quantitative
Detection system is based on giant magnetostrictive material and fiber grating, is based on magnetostriction materials magnetized state under the action of external magnetic field
It changes, its size is caused to extend or shorten, when giant magnetostrictive rod occurs to stretch under the action of external magnetic field along axial
When, the strain generated is transmitted on fiber grating, and the dependent variable of the two is equal, and strain causes fiber grating length to become
Change, so that the central wavelength for acting on the reflected light of laser on fiber grating changes, by measuring the variation of reflected light, i.e.,
It can obtain the size of tested electric current.The detection system be able to solve traditional fiber current sensor vulnerable to linear birefrigence influence and
Manufacture craft requires high problem, can be realized the overall process passive quantitative detection to iron core grounding current, and have preferable
Partial Discharge Detection sensitivity.
One kind provided by the embodiments of the present application is it should be understood that above general description and following detailed description is only
It is exemplary and explanatory, the application can not be limited.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 is that a kind of structure of the shelf depreciation quantitative detection system based on fiber grating provided by the embodiments of the present application is shown
It is intended to；
Fig. 2 is ultra-magnetic telescopic in the shelf depreciation quantitative detection system provided by the embodiments of the present application based on fiber grating
The scheme of installation of stick；
Fig. 3 is ultra-magnetic telescopic in the shelf depreciation quantitative detection system provided by the embodiments of the present application based on fiber grating
The installation top view of stick；
Fig. 4 is a kind of process of the shelf depreciation quantitative detecting method based on fiber grating provided by the embodiments of the present application
Figure.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in example is applied, the technical scheme in the embodiment of the application is clearly and completely described, it is clear that described implementation
Example is only some embodiments of the present application, rather than whole embodiments.Based on the embodiment in the application, ordinary skill
The model of the application protection all should belong in personnel's every other embodiment obtained without making creative work
It encloses.
It is a kind of shelf depreciation quantitative detection system based on fiber grating provided by the embodiments of the present application referring to Fig. 1
Structural schematic diagram.
As shown in Figure 1, the shelf depreciation quantitative detection system provided by the embodiments of the present application based on fiber grating include according to
Laser 1, current probe and the data collecting card 4 of secondary connection, wherein
Current probe includes screwed pipe 5, giant magnetostrictive rod 6 and fiber grating 7, giant magnetostrictive rod 6 and fiber grating 7
It is both secured in screwed pipe 5, fiber grating 7 is fixed on giant magnetostrictive rod 6, and the axial axis of fiber grating 7 and super magnetic
The axial axis of extension stem 6 is caused to coincide；Laser 1 connect by optical fiber with fiber grating 7, fiber grating 7 pass through optical fiber and
Data collecting card 4 connects.Specifically, giant magnetostrictive rod 6 and fiber grating 7 are installed in the inside of screwed pipe 5, screwed pipe 5
Be externally wrapped with tested optical fiber, tested optical fiber has electric current to pass through, and forms external magnetic field on the outside of screwed pipe 5.It is stretched based on super mangneto
The giant magnetostrictive rod 6 of compression material magnetized state under the action of external magnetic field changes, its size is caused to extend or shorten
Characteristic, use temperature-insensitive type fixed glue that fiber grating is axially fixed on giant magnetostrictive rod as sensing element
Part, the two are considered as an entirety.
For fixed giant magnetostrictive rod 6, as shown in Figure 2 and Figure 3, current probe further includes mounting groove 8, the inside of mounting groove 8
Face is equipped with multiple pulleys 9, and the bottom centre of giant magnetostrictive rod 6 is fixed on mounting groove 8, and the appearance of giant magnetostrictive rod 6
Face is contacted with pulley 9.Specifically, giant magnetostrictive rod 6 is mounted in the mounting groove 8 by resin material processing, wherein mounting groove 8
Length be 10 centimetres, it is highly 3 centimetres that width, which is 5 centimetres, and the diameter of pulley 9 is 1 centimetre.
The medial surface of mounting groove 8 is provided with oil reservoir, and the outer surface of giant magnetostrictive rod 6 is contacted with oil reservoir.Specifically, pacifying
Lubricating oil is coated on the bottom surface and side of tankage 8, the pulley 9 of 8 medial surface of mounting groove plays fixed work to giant magnetostrictive rod 6
With solving the problems, such as that giant magnetostrictive material is brittle and tensile strength is poor.
When giant magnetostrictive rod 6 is flexible along axial generation under the action of external magnetic field, giant magnetostrictive rod 6 is in mounting groove
It generates and stretches in 8, ensure that the stretch stability of giant magnetostrictive rod 6, and mounting groove 8 by the pulley 9 of 8 medial surface of mounting groove
Bottom surface be coated with lubricating oil, giant magnetostrictive rod 6 when flexible, reduce giant magnetostrictive rod 6 bottom surface and 8 bottom surface of mounting groove
Between frictional force.
Since fiber grating 7 is fixed on giant magnetostrictive rod 6, what giant magnetostrictive rod 6 generated under external magnetic field
Strain is transferred on fiber grating 7, and the dependent variable of the two is equal, and strain causes 7 length of fiber grating to change.Fiber grating
7 deformation quantities and the corresponding relationship of magnitude of current size are as follows:
In the case where magnetic field strength is the magnetic fields of H, the magnitude of magnetostriction of giant magnetostrictive rod 6 in axial direction and additional magnetic
Shown in the relational expression such as formula (1) of field:
Wherein, L --- giant magnetostrictive rod length；
Δ L --- the variable quantity of giant magnetostrictive rod length；
The coefficient of dilatation of C --- magnetostriction materials.
Known by longitudinal strain formula, the axial strain of giant magnetostrictive rod are as follows: εm=Δ L/L.
Fiber grating is axially fixed on giant magnetostrictive rod, axial strain εfIt is answered with the axial direction of giant magnetostrictive rod
Become εmEqually, shown in the corresponding relationship such as formula (2) for being tested pulse current of PD and fiber grating axial strain:
εf=KI2 (2)
Wherein, K --- constant corresponding with coefficient of dilatation.
By formula (2) it is found that the electrical current of tested optical fiber and the length variable quantity of fiber grating are proportional, when super magnetic
Cause extension stem when external magnetic field lower edge longitudinally occurs flexible, the strain generated is transferred on fiber grating, and strain causes
Fiber grating length changes, so that the central wavelength of the reflected light of laser transmitting laser changes, it is anti-by measuring
The size of tested electric current can be obtained in the variation for penetrating light.
The laser of laser transmitting enters fiber grating 7 by optical fiber, and the external magnetic field that tested optical fiber generates makes super mangneto
Extension stem 6 and fiber grating 7, which generate, to be stretched, so that the length of fiber grating changes, reflected light is caused to change, reflected
Light enters data collecting card by optical fiber, carries out processing analysis to reflected light by data collecting card 4, obtains the big of tested electric current
It is small.Optionally, laser 1 is the semiconductor laser that center wavelength is 1550nm, and the central wavelength of fiber grating 7 is
1550nm。
In the embodiment of the present application, between laser 1 and current probe be equipped with fiber coupler 2, laser 1 by optical fiber with
The input terminal of fiber coupler 2 connects, and the output end of fiber coupler 2 is connect by optical fiber with fiber grating 7.Fiber coupler
It is the device that detachable (activity) connection is carried out between optical fiber and optical fiber, it is that two end face precisions of optical fiber are docked,
So that the light energy of launching fiber output can be coupled in reception optical fiber to the maximum extent, i.e., will be swashed by fiber coupler 2
The laser that light device 1 exports smoothly imports in fiber grating 7.Optionally, fiber coupler 2 is three-dB coupler.
Data collecting card 4 is connect with fiber coupler 2, for acquiring the laser of current probe reflection.What laser 1 emitted
Laser enters in the fiber grating 7 of current probe, and fiber grating 7 changes in external magnetic field lower chamber length, to change
Laser reflection condition is become, so that the central wavelength of the reflected light of laser changes.Reflected light is transferred to optical fiber by optical fiber
In coupler 2, then passes through fiber coupler 2 and be transferred in data collecting card 4.
Photoelectric converter 3, the output end and photoelectricity of fiber coupler 2 are equipped between fiber coupler 2 and data collecting card 4
The input terminal of converter 3 connects, and the output end of photoelectric converter 3 is connect with data collecting card 4.Photoelectric converter 3 will receive
Reflected light be converted to electric signal, electric signal is exported into data collecting card 4, is handled by data collecting card 4 it, is obtained
To the size of current of tested optical fiber.
The working principle of shelf depreciation quantitative detection system provided by the embodiments of the present application based on fiber grating is as follows: swashing
Light device 1 generates the laser of 1550nm, and laser enters current probe, fiber grating of the laser in current probe by fiber coupler
Middle generation reflection, after tested optical fiber is wrapped on the screwed pipe of current probe, tested optical fiber, which is powered, generates external magnetic field, super mangneto
Extension stem longitudinally occurs to stretch in external magnetic field lower edge, and the strain generated is transferred on fiber grating, and strain causes optical fiber
Grating length changes, so that the central wavelength of reflected light changes；Reflected light after variation enters through fiber coupler
Photoelectric converter converts the reflected light into electric signal, and electric signal is exported into data collecting card, data collecting card to electric signal into
Row processing, obtains the size of current of tested optical fiber.
Shelf depreciation quantitative detection system provided by the embodiments of the present application is based on giant magnetostrictive material and fiber grating, surpasses
Magnetostriction materials and fiber grating generate flexible strain under external magnetic field, so that the wavelength of reflected light changes, lead to
The variation for crossing measurement reflected light obtains the size of tested electric current, solves traditional fiber current sensor vulnerable to linear birefrigence
It influences and production processing technology requires high problem, realize to the not charged quantitative detection of the overall process of iron core grounding current,
And there is preferable Partial Discharge Detection sensitivity.
The shelf depreciation quantitative detection system based on fiber grating provided based on the above embodiment, the embodiment of the present application is also
Provide a kind of shelf depreciation quantitative detecting method based on fiber grating.
As shown in figure 4, the shelf depreciation quantitative detecting method provided by the embodiments of the present application based on fiber grating includes:
S100: the shelf depreciation quantitative detection system based on fiber grating is installed to the iron core grounding lead of electrical equipment
On.
The shelf depreciation quantitative detection system provided by the present application based on fiber grating is installed in transformer core grounding lead
System, during installation, should ensure that the length of optical fiber, so that the electric part (data collecting card etc.) of this system is as far as possible far from electromagnetic wave
Interference source.During installation, it should ensure that optical fiber bending as few as possible.In the case that electromagnetic interference is especially strong at the scene, Ying
Install shielded layer outside solenoid additional.
S200: the calibration relationship between current parameter and the shelf depreciation of electrical equipment is established.
With the unit amplitude discharge capacity of calibration square-wave generator calibration electrical equipment, two 10,100pC gears are demarcated.Root
Linear relation y=ax+b is solved according to unit amplitude discharge capacity and size of current, establishes current parameter with shelf depreciation depending on putting
The calibration relationship of electricity.
S300: the pulse current of PD waveform of electrical equipment is detected.
After electrical equipment generates shelf depreciation, the data collecting card of detection system detects pulse current of PD wave
Shape.
S400: partial discharge quantity is determined according to calibration relationship and pulse current of PD waveform
After detecting pulse current of PD waveform, partial discharge quantity is determined according to calibration relationship.
Part of the shelf depreciation quantitative detecting method provided by the embodiments of the present application based on fiber grating to electrical equipment
Discharge scenario carries out quantitative detection, realizes the overall process passive quantitative detection to iron core grounding current, and have preferable office
Portion's discharge examination sensitivity.
It should be noted that in the present specification, the relational terms of such as " first " and " second " or the like are used merely to
It distinguishes one entity or operation from another entity or operation, and not necessarily requires or imply these entities or operation
Between there are any this actual relationship or sequences.
Those skilled in the art will readily occur to its of the application after considering specification and practicing the disclosure invented here
His embodiment.This application is intended to cover any variations, uses, or adaptations of the invention, these modifications, purposes or
Person's adaptive change follows the general principle of the application and including the undocumented common knowledge in the art of the application
Or conventional techniques.The description and examples are only to be considered as illustrative, and the true scope and spirit of the application are wanted by right
The content asked is pointed out.
Above-described the application embodiment does not constitute the restriction to the application protection scope.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631859.7A CN109387760A (en) | 2018-12-29 | 2018-12-29 | A kind of shelf depreciation quantitative detection system and method based on fiber grating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811631859.7A CN109387760A (en) | 2018-12-29 | 2018-12-29 | A kind of shelf depreciation quantitative detection system and method based on fiber grating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109387760A true CN109387760A (en) | 2019-02-26 |
Family
ID=65430966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811631859.7A Pending CN109387760A (en) | 2018-12-29 | 2018-12-29 | A kind of shelf depreciation quantitative detection system and method based on fiber grating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109387760A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954733A (en) * | 2019-11-22 | 2020-04-03 | 国网山西省电力公司大同供电公司 | A Fiber Bragg Grating Current Transformer with Controllable Operating Temperature |
| CN112526202A (en) * | 2020-11-19 | 2021-03-19 | 哈尔滨理工大学 | Optical fiber sensing device based on ultrasonic detection voltage and implementation method |
| CN112630530A (en) * | 2020-11-19 | 2021-04-09 | 哈尔滨理工大学 | Optical fiber sensing device based on ultrasonic detection frequency and implementation method |
| CN113063983A (en) * | 2021-06-03 | 2021-07-02 | 武汉华瑞伏安电力科技有限公司 | Three-phase high-voltage line current optical measurement device based on magnetostrictive effect |
| CN113203889A (en) * | 2021-05-12 | 2021-08-03 | 武汉华瑞伏安电力科技有限公司 | High-voltage line current optical measurement device based on magnetostrictive effect |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203595745U (en) * | 2013-12-18 | 2014-05-14 | 哈尔滨理工大学 | FBG current sensing device based on giant magnetostrictive material |
| CN104198789A (en) * | 2014-09-11 | 2014-12-10 | 国家电网公司 | Optical fiber current transformer based on magnetostrictive effect |
| CN104360254A (en) * | 2014-12-10 | 2015-02-18 | 广东电网有限责任公司电力科学研究院 | Ultrasonic detection system and method for fiber bragg grating for local discharge detection on electrical equipment in power grid |
| CN204188690U (en) * | 2014-09-11 | 2015-03-04 | 国家电网公司 | A kind of optical fiber current mutual inductor based on magnetostrictive effect |
| CN204359896U (en) * | 2014-12-10 | 2015-05-27 | 广东电网有限责任公司电力科学研究院 | For the Fiber Bragg Grating ultrasonic wave detecting system that electrical network local discharge of electrical equipment detects |
| CN106054045A (en) * | 2016-08-16 | 2016-10-26 | 安徽众升电力科技有限公司 | Partial discharge detection device |
| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
-
2018
- 2018-12-29 CN CN201811631859.7A patent/CN109387760A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203595745U (en) * | 2013-12-18 | 2014-05-14 | 哈尔滨理工大学 | FBG current sensing device based on giant magnetostrictive material |
| CN104198789A (en) * | 2014-09-11 | 2014-12-10 | 国家电网公司 | Optical fiber current transformer based on magnetostrictive effect |
| CN204188690U (en) * | 2014-09-11 | 2015-03-04 | 国家电网公司 | A kind of optical fiber current mutual inductor based on magnetostrictive effect |
| CN104360254A (en) * | 2014-12-10 | 2015-02-18 | 广东电网有限责任公司电力科学研究院 | Ultrasonic detection system and method for fiber bragg grating for local discharge detection on electrical equipment in power grid |
| CN204359896U (en) * | 2014-12-10 | 2015-05-27 | 广东电网有限责任公司电力科学研究院 | For the Fiber Bragg Grating ultrasonic wave detecting system that electrical network local discharge of electrical equipment detects |
| CN106054045A (en) * | 2016-08-16 | 2016-10-26 | 安徽众升电力科技有限公司 | Partial discharge detection device |
| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
Non-Patent Citations (2)
| Title |
|---|
| 姚远 等: "基于超磁致伸缩材料和光纤光栅的交流电流测量", 《武汉理工大学学报》 * |
| 李宝树 等: "基于磁致伸缩效应的FBG电流传感器", 《电工技术学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110954733A (en) * | 2019-11-22 | 2020-04-03 | 国网山西省电力公司大同供电公司 | A Fiber Bragg Grating Current Transformer with Controllable Operating Temperature |
| CN112526202A (en) * | 2020-11-19 | 2021-03-19 | 哈尔滨理工大学 | Optical fiber sensing device based on ultrasonic detection voltage and implementation method |
| CN112630530A (en) * | 2020-11-19 | 2021-04-09 | 哈尔滨理工大学 | Optical fiber sensing device based on ultrasonic detection frequency and implementation method |
| CN112630530B (en) * | 2020-11-19 | 2021-09-07 | 哈尔滨理工大学 | A kind of optical fiber sensing device and realization method based on ultrasonic detection frequency |
| CN112526202B (en) * | 2020-11-19 | 2021-09-07 | 哈尔滨理工大学 | An optical fiber sensing device and realization method based on ultrasonic detection voltage |
| CN113203889A (en) * | 2021-05-12 | 2021-08-03 | 武汉华瑞伏安电力科技有限公司 | High-voltage line current optical measurement device based on magnetostrictive effect |
| CN113063983A (en) * | 2021-06-03 | 2021-07-02 | 武汉华瑞伏安电力科技有限公司 | Three-phase high-voltage line current optical measurement device based on magnetostrictive effect |
| CN113063983B (en) * | 2021-06-03 | 2021-08-03 | 武汉华瑞伏安电力科技有限公司 | Three-phase high-voltage line current optical measurement device based on magnetostrictive effect |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109387760A (en) | A kind of shelf depreciation quantitative detection system and method based on fiber grating | |
| CN201155991Y (en) | A New Fiber Bragg Grating Acceleration Sensor | |
| CN201589842U (en) | Transformer partial discharge optical fiber detection device | |
| CN108507697B (en) | A kind of sea water temperature depth profile sampling towed system based on Fibre Optical Sensor | |
| US4348587A (en) | Fiber optic transducer for measuring current or magnetic field | |
| CN106019478B (en) | Highly sensitive pyrometric cone coupled mode micro-nano fiber ultrasonic testing system and its coupler production method | |
| CN104330101A (en) | Optical fiber sensor capable of measuring temperatures and micrometric displacement simultaneously | |
| CN104316106A (en) | Optical fiber sensor based on Mach-Zehnder interference and fiber bragg grating | |
| CN105021271B (en) | A kind of optical fiber EFPI infrasonic sensors and infrasound signals detection system | |
| CN101782601A (en) | Concatenation-type fiber bragg grating self-demodulation current sensor | |
| CN208383354U (en) | Detect the fiber grating sensing system of valve threaded connection place strain | |
| CN105277270B (en) | A kind of double mode vibration-detection system based on optical fiber grating sensing | |
| CN103869224A (en) | Capacitive equipment partial discharge detection method based on optical fiber current sensor | |
| CN103472136A (en) | Acoustic emission sensing system based on single mode fiber coupler | |
| CN108489597A (en) | A kind of acoustic detector and method based on hollow-core photonic crystal fiber | |
| CN108180839A (en) | A kind of displacement sensor and detection device for small space detection | |
| CN107843758A (en) | A kind of two die drawings cone fibre optic current sensor and preparation method | |
| CN102680263B (en) | Combined parameter monitoring system | |
| CN109186825A (en) | A kind of optical fiber macrobend pressure sensor and its measuring system | |
| CN103257266A (en) | Portable all-insulation optical-fiber current detector | |
| CN102156214A (en) | Double-light-path leakage current optical fiber sensor device | |
| CN111426991B (en) | Optical fiber vector magnetic field sensor | |
| CN202075306U (en) | FBG (fiber bragg grating) acceleration transducer based on tapered structure | |
| CN208458685U (en) | A kind of torsion sensor based on Sagnac ring | |
| CN205981115U (en) | Photoelectric type vibrating wire sensor |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190226 |
|
| RJ01 | Rejection of invention patent application after publication |