CN109188219A - Built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system and method - Google Patents
Built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system and method Download PDFInfo
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- CN109188219A CN109188219A CN201811002010.3A CN201811002010A CN109188219A CN 109188219 A CN109188219 A CN 109188219A CN 201811002010 A CN201811002010 A CN 201811002010A CN 109188219 A CN109188219 A CN 109188219A
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- 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
- G01R31/1209—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 acoustic measurements
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- 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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- 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
- G01R31/1254—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 of gas-insulated power appliances or vacuum gaps
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Abstract
The present invention relates to a kind of built-in GIS shelf depreciation ultrasonic waves and light pulse combined detection system and method, the system includes monitored target GIS, ultrasonic wave and light pulse integrated transducer, three-dB coupler, optical fiber transmission, light source, dual channel optoelectronic conversion and amplifier installation, double-channel data synchronous acquisition and storage device, control and display device and printing equipment, the ultrasonic wave and light pulse integrated transducer is built-in to be installed in monitored target GIS, the dual channel optoelectronic conversion and amplifier installation, double-channel data synchronous acquisition and storage device, control is sequentially connected with display device and printing equipment.Compared with prior art, the present invention has many advantages, such as simple, practical, reduction electromagnetism and external visible light interference problem.
Description
Technical field
The present invention relates to GIS partial discharge detection fields, more particularly, to a kind of built-in GIS shelf depreciation ultrasonic wave
With light pulse combined detection system and method.
Background technique
The measurement of shelf depreciation is using various phenomenons caused by shelf depreciation as foundation, by the object that can state the phenomenon
Reason amount characterizes the state of shelf depreciation.The process of shelf depreciation other than the loss along with the transfer of charge and electric energy,
Electromagnetic radiation can also be generated, ultrasonic wave, shine, generate heat and occur new product etc..Therefore, office corresponding with these phenomenons
The detection method of portion's electric discharge can be divided into electrical measurements and non-electrometric method two major classes.Non- electrometric method mainly includes ultrasonic wave inspection
Survey method, flash spotting, Infrared Detection Method, chemical measure etc..The advantages of these methods is to resist dry in measurement not by electrical interference
It is strong to disturb ability.
Currently, ultrasonic measurement main sensors are piezoelectric type sonic transducers, sensor is fixed on transformer when application
Except shell.Not only there is the electromagnetic interference problem of signal in such measurement method, while also having sound wave to propagate along transformer shell
The problem of influencing positioning.Flash spotting is the light radiation by detection shelf depreciation generation as beasurement base.Pass through partial discharge light
After pulse itself or photoelectric conversion, can carry out shelf depreciation spectrum analysis, partial discharge light pulse detection, partial discharge location, it is electrical absolutely
The various researchs such as edge agine mechaism and partial discharge propagation properties, but its interference problem such as visible light of easily holding, cause to survey
Measure signal inaccuracy.Nevertheless, the methods and techniques of ultrasonic wave, light pulse Partial Discharge Detection are extensive in on-line monitoring
It uses, but is two systems or two independent sensors, need to artificially be situated between when low efficiency, signal analysis when being used in combination
Enter judgement.
By retrieval, China Patent Publication No. is that CN206773135U discloses a kind of detection of GIS partial discharge characteristic
System, comprising: GIS insulation defect simulator, alternating-current voltage source, DC voltage source and measurement of partial discharge dress parallel with one another
It sets；Wherein, different insulative defect of the GIS insulation defect simulator for gradually Simulated GlS, in DC voltage source and alternating current
When potential source is the power supply of GIS insulation defect simulator simultaneously, different local discharge signals is generated；Partial-discharge measuring device pair
Local discharge signal is handled, and the corresponding partial discharge pulse's waveform of different insulative defect of GIS is generated.But this is practical
It is novel to use electrical measurements, vulnerable to electrical interference.
Summary of the invention
It is an object of the present invention to overcome the above-mentioned drawbacks of the prior art and provide a kind of built-in GIS offices
Portion's electric discharge ultrasonic wave and light pulse combined detection system and method.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system, the system include monitored pair
As GIS, ultrasonic wave and light pulse integrated transducer, three-dB coupler, optical fiber transmission, light source, dual channel optoelectronic conversion and amplification
Device device, double-channel data synchronous acquisition and storage device, control and display device and printing equipment, the ultrasonic wave and
Light pulse integrated transducer is built-in to be installed in monitored target GIS, the dual channel optoelectronic conversion and amplifier dress
It sets, double-channel data synchronous acquisition and storage device, control and display device and printing equipment are sequentially connected；
The ultrasonic wave and light pulse integrated transducer is sequentially connected three-dB coupler and binary channels by optical fiber transmission
Photoelectric conversion and amplifier installation, the three-dB coupler are connect with light source, are constituted based on Fabry-Perot principle of interference
Processing of Partial Discharge Ultrasonic Signals measure loop, described dual channel optoelectronic conversion and amplifying device are by the ultrasonic wave of shelf depreciation
Signal is converted into voltage waveform signal and is sent into double-channel data synchronous acquisition and storage device；
The ultrasonic wave and light pulse integrated transducer by optical fiber transmission be sequentially connected dual channel optoelectronic conversion and
Amplifier installation and double-channel data synchronous acquisition and storage device, constitute the shelf depreciation light pulse based on optical fiber technology
The light pulse signal of shelf depreciation is converted voltage waveform by measure loop, the dual channel optoelectronic conversion and amplifier installation
Signal is sent into double-channel data synchronous acquisition and storage device；
The double-channel data synchronous acquisition and storage device synchronous acquisition is converted by dual channel optoelectronic and amplifier
Data are sent into control and display devices carries out display and printing equipment is beaten by the two-way voltage waveform signal of device output
Print.
Preferably, the ultrasonic wave and light pulse integrated transducer include epoxy packages disk, ultrasonic sensor
Probe, light pulse sensor probe, metal tube and single mode optical fiber, the ultrasonic sensor probe are arranged in epoxy packages circle
Disk center surface, the light pulse sensor probe centered on ultrasonic sensor probe according to being uniformly and symmetrically distributed in disk
Surface, the single mode optical fiber for connecting the ultrasonic sensor probe and light pulse sensor probe are packaged in metal tube, institute
The metal tube connection epoxy packages disk stated.
Preferably, the ultrasonic sensor probe is visited using the film cavity based on Fabry-Perot principle of interference
Head.
Preferably, the light pulse sensor includes more single mode optical fibers and optical guided wave coupler, the more lists
Mode fiber carries out parallel connection by optical guided wave coupler and is used as light pulse sensor probe, and the more single mode optical fibers are according to ultrasound
It is uniformly and symmetrically distributed centered on wave sensor probe in disc surfaces.
Preferably, the light pulse sensor includes 8 single mode optical fibers and 72 × 1 optical waveguide couplers of Y type, described
8 single mode optical fibers centered on epoxy packages disk, by two annulus are every at 1/3 radius of epoxy packages disk, at 2/3 radius
It is arranged every 45 °, 72 × 1 optical waveguide couplers of Y type are set in epoxy packages disk, 8 × 1 couplers of formation
Carry out light signal strength coupling.
Preferably, 12 or 16 single mode optical fibers can be used to be with ultrasonic sensor probe for the light pulse sensor
Center is uniformly and symmetrically distributed in epoxy packages disc surfaces.
Preferably, the display content of the control and display device includes: display single pulse waveform, peak value-time
The analysis content of sequence and PRPD spectrogram, the control and display device includes: signal trend analysis, pattern-recognition and determines
Position.
Preferably, the double channel data acquisition mode can be replaced multichannel collecting or or distributed capture mode.
Preferably, the control and display device dual channel optoelectronic is converted by data line and amplifier installation and pair
Channel data synchronous acquisition and storage device carry out parameter setting.
A kind of method of built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system, comprising the following steps:
Step 1, Fabry-Perot interferometer ultrasonic sensor is processed based on MEMS technology, and shelf depreciation ultrasound is passed
Sensor, light pulse signal probe designs integrally change GIS built-in sensor；
Step 2, by integrated GIS built-in sensor on GIS mounting arrangements and connect 2 measurement circuits；
Step 3, GIS partial discharge ultrasonic signal is popped one's head in by the film cavity based on Fabry-Perot principle of interference,
It is transmitted through optical fiber, by being converted into voltage waveform signal after photoelectric conversion and amplification；GIS partial discharge light pulse signal then passes through
The probe that more single mode optical fiber parallel connections are formed, is transmitted through optical fiber, by being converted into voltage waveform signal after photoelectric conversion and amplification；
Step 4, GIS partial discharge ultrasonic wave, light pulse signal are carried out using double-channel data synchronous acquisition device same
Step acquisition stores and transmits；
Step 5, shelf depreciation ultrasonic wave, light pulse signal are shown and comparative analysis, print result.
Compared with prior art, the invention has the following advantages that
1, the present invention provides a kind of built-in integrated sensors, while measuring shelf depreciation ultrasonic wave, light inside GIS
The associated detecting method and system of pulse signal.
2, the present invention provides a kind of built in test sides more significantly more efficient than traditional GIS Processing of Partial Discharge Ultrasonic Signals
Method not only solves electromagnetic interference problem, while also avoiding what former ultrasonic wave was positioned along GIS inner insulator propagation effect
Problem.
3, more single mode optical fibers are subjected to parallel connection as optical signal spy by optical guided wave coupler the present invention provides a kind of
Device is surveyed, detection signal strength is enhanced and increases shelf depreciation optical signal detection angle.
4, the present invention provides a kind of novel GIS partial discharge signal ultrasonic wave, light pulse built in test mutually to help
Card (sound-light joint) analysis method.
Detailed description of the invention
Fig. 1 is systematic square frame structural schematic diagram of the invention.
Fig. 2 is method work flow diagram of the invention.
Fig. 3 is the structural schematic diagram of integrated transducer device of the invention.
Fig. 4 is the portion the A partial enlarged view of Fig. 3.
Fig. 5 is the supersonic sensing and test principle figure of the invention based on Fabry-Perot principle of interference.
Fig. 6 is the portion the B partial enlarged view of Fig. 5.
Fig. 7 is the light pulse sensing and test principle figure of the invention based on optical fiber technology.
Fig. 8 is the schematic illustration of 8 × 1 optical waveguide couplers of the invention.
Wherein 1 is monitored target GIS, and 2 be ultrasonic wave and light pulse integrated transducer, and 3 be three-dB coupler, and 4 be light
Fibre transmission, 5 be light source, and 6 convert and amplifier installation for dual channel optoelectronic, and 7 be double-channel data synchronous acquisition and storage device,
8 be control and display device, and 9 be printing equipment, and 21 be epoxy packages disk, and 22 be ultrasonic sensor probe, and 23 be light arteries and veins
Sensor probe is rushed, 24 be metal tube, and 25 be single mode optical fiber.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is a part of the embodiments of the present invention, rather than whole embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work all should belong to the model that the present invention protects
It encloses.
As shown in Figure 1, a kind of built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system, the system packet
Include monitored target GIS1, ultrasonic wave and light pulse integrated transducer 2, three-dB coupler 3, optical fiber transmission 4, light source 5, bilateral
Road photoelectric conversion and amplifier installation 6, double-channel data synchronous acquisition and storage device 7, control are filled with display device 8 and printing
Set 9.
The ultrasonic wave and light pulse integrated transducer 2 is built-in to be installed in monitored target GIS1, described
Ultrasonic wave and light pulse integrated transducer 2 are converted by 4 connection three-dB coupler 3 of optical fiber transmission, light source 5 and dual channel optoelectronic
With amplifier installation 6, the Processing of Partial Discharge Ultrasonic Signals measure loop based on Fabry-Perot principle of interference is constituted, is used
Optical fiber transmission 4, by photoelectric conversion and amplifying device 6, converts voltage waveform signal for the ultrasonic signal of shelf depreciation and send
Enter double-channel data synchronous acquisition and storage device 7；The ultrasonic wave and light pulse integrated transducer 2 is transmitted by optical fiber
4 are sequentially connected dual channel optoelectronic conversion and amplifier installation 6 and double-channel data synchronous acquisition and storage device 7, constitute base
It, will by photoelectric conversion and amplifier installation 6 using optical fiber transmission 4 in the shelf depreciation light pulse measure loop of optical fiber technology
The light pulse signal of shelf depreciation is converted into voltage waveform signal and is sent into double-channel data synchronous acquisition and storage device 7；It is described
Double-channel data synchronous acquisition and 7 synchronous acquisition of storage device by dual channel optoelectronic conversion and amplifier installation 6 export 2
The control of data feeding is carried out display with display device 8 and printing equipment 9 prints, the control by road voltage waveform signal
System to dual channel optoelectronic conversion and amplifier installation 6 and double-channel data synchronous acquisition and is deposited with display device 8 by data line
Storage device 7 carries out parameter setting.
As shown in Figure 3 and Figure 4, the ultrasonic wave and light pulse integrated transducer include epoxy packages disk 21, surpass
Sonic sensor, light pulse sensor, metal tube 24 and single mode optical fiber 25, the ultrasonic sensor probe 22 are arranged in ring
Oxygen encapsulates 21 center surface of disk, and the light pulse sensor includes more single mode optical fibers 23 and optical guided wave coupler, described
More single mode optical fibers 23 carry out in parallel being used as light pulse sensor probe, the more single-mode optics by optical guided wave coupler
Fibre connects described 23 according to being uniformly and symmetrically distributed centered on ultrasonic sensor probe 22 (disc centre) on 21 surface of disk
The single mode optical fiber 25 of ultrasonic sensor probe and light pulse sensor probe is packaged in metal tube 24, the metal tube 24
Connect epoxy packages disk 21.
As shown in Figure 7 and Figure 8, the light pulse sensor includes 8 single mode optical fibers and 72 × 1 optical waveguide couplings of Y type
Clutch, 8 single mode optical fibers are centered on epoxy packages disk, by 1/3 radius of epoxy packages disk, at 2/3 radius
Two annulus are arranged every 45 °, and 72 × 1 optical waveguide couplers of Y type are set in epoxy packages disk, formation
8 × 1 couplers carry out light signal strength coupling.
The light pulse sensor can be used 12 or 16 single mode optical fibers centered on ultrasonic sensor probe
It is even to be symmetrically distributed in epoxy packages disc surfaces.
The display content of the control and display device include: display single pulse waveform, peak value-time series and
The analysis content of PRPD spectrogram, the control and display device includes: signal trend analysis, pattern-recognition and positioning etc..
The double channel data acquisition mode can be replaced multichannel collecting or or distributed capture mode.
As shown in Fig. 2, a kind of method of built-in GIS shelf depreciation ultrasonic wave and light pulse joint-detection, including with
Lower step:
Step 1, Fabry-Perot interferometer ultrasonic sensor is processed based on MEMS technology, and shelf depreciation ultrasound is passed
Sensor, light pulse signal probe designs integrally change GIS built-in sensor；
Step 2, by integrated built-in formula sensor on GIS mounting arrangements and connect 2 measurement circuits；
Step 3, GIS partial discharge ultrasonic signal is popped one's head in by the film cavity based on Fabry-Perot principle of interference,
It is transmitted through optical fiber, by being converted into voltage waveform signal after photoelectric conversion and amplification；GIS partial discharge light pulse signal then passes through
The probe that more single mode optical fiber parallel connections are formed, is transmitted through optical fiber, by being converted into voltage waveform signal after photoelectric conversion and amplification；
Step 4, GIS partial discharge ultrasonic wave, light pulse signal are carried out using double-channel data synchronous acquisition device same
Step acquisition stores and transmits；
Step 5, shelf depreciation ultrasonic wave, light pulse signal are shown and comparative analysis, print result.
The working principle of detection system of the invention: ultrasonic wave, light pulse sensor are by epoxy packages at a disk knot
Structure, ultrasonic sensor are arranged in disc centre surface, receive the ultrasonic signal that shelf depreciation generates inside GIS；Light pulse
Sensor carries out in parallel as optical signal by optical guided wave coupler by more single mode optical fibers and pops one's head in, and multifiber probe is according to super
It is uniformly and symmetrically distributed centered on sonic sensor probe (disc centre) in disc surfaces, receives shelf depreciation inside GIS and generate
Light pulse signal.
As shown in Figure 5 and Figure 6, supersonic sensing and test principle based on Fabry-Perot principle of interference: from light
The monochromatic light that source is launched is passed to film cavity probe along optical fiber by three-dB coupler, and incident light is handed in fiber core-gas
First reflection (reflection 1) occurs on interface, after incident light about 96% enters blanket gas body cavity, in the silicon thin film for being coated with metal layer
Secondary reflection (reflection 2) occurs on piece, and is almost totally reflected.It is concerned with principle according to dual-beam, it can be deduced that, it is reflected
Optical signal is the function of sealing gas cavity length.The ultrasonic wave that the optical signal that film cavity probe returns is generated with shelf depreciation
Pressure signal squeezes the variation for the air gap that silicon thin film piece generates and generates variation, cashes as interference fringe.Continuous interference item
The transformation of the continuous phase of line is able to reflect the information of sealing gas cavity gap variation.Therefore the optical signal of output meets practical defeated
The ultrasonic signal entered.
As shown in Figure 7 and Figure 8, light pulse sensing and test principle based on optical fiber technology:
Using 8 single mode optical fibers probe centered on disk, by 1/3 radius of disk, at 2/3 radius two annulus every
45 ° are arranged, and are carried out in the disk of epoxy sealing using 8 × 1 couplers that 72 × 1 optical waveguide couplers of Y type are formed
Light signal strength coupling.It is used as optical signal probe simultaneously using more single mode optical fibers, detection light pulse not only can be enhanced
Signal strength can also increase shelf depreciation optical signal detection angle.
The parameters such as sensor, data acquisition and display analysis that detection method of the invention is related to such as are given a definition respectively:
(1), Fabry-Perot film cavity is popped one's head in
Blanket gas body cavity radius: 200 μm；
Blanket gas body cavity thickness: 45 μm.
Processing technology: MEMS.
(2), ultrasonic signal acquires
Detect frequency band: 10kHz~200kHz；
Sense channel: 1CH；
Filtering bandwidth: 50kHz~150kHz；
Sensitivity :≤3dB；
Sample rate: 2MS/s.
(3), light pulse signal acquires
Spectrum frequency range: 500-1000nm；
Sense channel: 1CH；
Sensitivity :≤3dB；
Sample rate: 3GS/s.
(4), it shows and analyzes
Display: single pulse waveform, peak value-time series and PRPD spectrogram；
Analysis: signal trend analysis, pattern-recognition, positioning etc..
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or replace
It changes, these modifications or substitutions should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with right
It is required that protection scope subject to.
Claims (10)
1. a kind of built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system, which is characterized in that the system includes
Monitored target GIS, ultrasonic wave and light pulse integrated transducer, three-dB coupler, optical fiber transmission, light source, dual channel optoelectronic turn
Change with amplifier installation, double-channel data synchronous acquisition and storage device, control and display device and printing equipment, it is described
Ultrasonic wave and light pulse integrated transducer is built-in is installed in monitored target GIS, the dual channel optoelectronic conversion and
Amplifier installation, double-channel data synchronous acquisition and storage device, control and display device and printing equipment are sequentially connected；
The ultrasonic wave and light pulse integrated transducer is sequentially connected three-dB coupler and dual channel optoelectronic by optical fiber transmission
Conversion and amplifier installation, the three-dB coupler are connect with light source, constitute the office based on Fabry-Perot principle of interference
Discharge ultrasonic signal measure loop in portion, and described dual channel optoelectronic conversion and amplifying device are by the ultrasonic signal of shelf depreciation
It is converted into voltage waveform signal and is sent into double-channel data synchronous acquisition and storage device；
The ultrasonic wave and light pulse integrated transducer is sequentially connected dual channel optoelectronic conversion and amplification by optical fiber transmission
Device device and double-channel data synchronous acquisition and storage device constitute the shelf depreciation light pulse detection based on optical fiber technology
The light pulse signal of shelf depreciation is converted voltage waveform signal by circuit, the dual channel optoelectronic conversion and amplifier installation
It is sent into double-channel data synchronous acquisition and storage device；
The double-channel data synchronous acquisition and storage device synchronous acquisition is converted by dual channel optoelectronic and amplifier installation
The control of data feeding is carried out display with display device and printing equipment prints by the two-way voltage waveform signal of output.
2. system according to claim 1, which is characterized in that the ultrasonic wave and light pulse integrated transducer include
Epoxy packages disk, ultrasonic sensor probe, light pulse sensor probe, metal tube and single mode optical fiber, the ultrasonic wave
Sensor probe is arranged in epoxy packages disc centre surface, and the light pulse sensor probe is visited according to ultrasonic sensor
It is uniformly and symmetrically distributed centered on head and connects the ultrasonic sensor probe and light pulse sensor probe in disc surfaces
Single mode optical fiber is packaged in metal tube, and the metal tube connects epoxy packages disk.
3. system according to claim 2, which is characterized in that the ultrasonic sensor probe, which uses, is based on Fabry-
The film cavity of Perot principle of interference is popped one's head in.
4. system according to claim 2, which is characterized in that the light pulse sensor include more single mode optical fibers and
Optical guided wave coupler, the more single mode optical fibers carry out parallel connection by optical guided wave coupler and are used as light pulse sensor probe,
The more single mode optical fibers centered on ultrasonic sensor probe according to being uniformly and symmetrically distributed in disc surfaces.
5. system according to claim 4, which is characterized in that the light pulse sensor includes 8 single mode optical fibers and 7
A 2 × 1 optical waveguide coupler of Y type, 8 single mode optical fibers are centered on epoxy packages disk, by epoxy packages disk 1/3
Two annulus are arranged every 45 ° at radius, at 2/3 radius, and 72 × 1 optical waveguide couplers of Y type are set to epoxy
It encapsulates in disk, 8 × 1 couplers of formation carry out light signal strength coupling.
6. system according to claim 2, which is characterized in that 12 or 16 lists can be used in the light pulse sensor
Mode fiber is uniformly and symmetrically distributed in epoxy packages disc surfaces centered on ultrasonic sensor probe.
7. system according to claim 1, which is characterized in that the display content of the control and display device includes:
Show single pulse waveform, peak value-time series and PRPD spectrogram, the analysis content packet of the control and display device
It includes: signal trend analysis, pattern-recognition and positioning.
8. system according to claim 1, which is characterized in that the double channel data acquisition mode can be replaced multi-pass
Road acquisition or or distributed capture mode.
9. system according to claim 1, which is characterized in that the control and display device is by data line to bilateral
Road photoelectric conversion and amplifier installation and double-channel data synchronous acquisition and storage device carry out parameter setting.
10. a kind of using built-in GIS described in claim 1 shelf depreciation ultrasonic wave and light pulse combined detection system
Method, which comprises the following steps:
Step 1, based on MEMS technology process Fabry-Perot interferometer ultrasonic sensor, and by shelf depreciation ultrasonic sensor,
Light pulse signal probe designs integrally change GIS built-in sensor；
Step 2, by integrated GIS built-in sensor on GIS mounting arrangements and connect 2 measurement circuits；
Step 3, GIS partial discharge ultrasonic signal is popped one's head in by the film cavity based on Fabry-Perot principle of interference, through light
Fibre transmission, by being converted into voltage waveform signal after photoelectric conversion and amplification；GIS partial discharge light pulse signal then passes through more
The probe that single mode optical fiber parallel connection is formed, is transmitted through optical fiber, by being converted into voltage waveform signal after photoelectric conversion and amplification；
Step 4, GIS partial discharge ultrasonic wave, light pulse signal are synchronized using double-channel data synchronous acquisition device and is adopted
Collect, store and transmit；
Step 5, shelf depreciation ultrasonic wave, light pulse signal are shown and comparative analysis, print result.
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| CN201811002010.3A CN109188219A (en) | 2018-08-30 | 2018-08-30 | Built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system and method |
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| CN201811002010.3A CN109188219A (en) | 2018-08-30 | 2018-08-30 | Built-in GIS shelf depreciation ultrasonic wave and light pulse combined detection system and method |
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| CN113109675A (en) * | 2021-04-12 | 2021-07-13 | 西北核技术研究所 | Image diagnosis device and method for insulation stack vacuum surface flashover |
| CN116609627A (en) * | 2023-06-15 | 2023-08-18 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge detection device and method based on pressure monitoring |
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| CN113109675A (en) * | 2021-04-12 | 2021-07-13 | 西北核技术研究所 | Image diagnosis device and method for insulation stack vacuum surface flashover |
| CN116609627A (en) * | 2023-06-15 | 2023-08-18 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge detection device and method based on pressure monitoring |
| CN116609627B (en) * | 2023-06-15 | 2024-03-08 | 国网江苏省电力有限公司电力科学研究院 | Partial discharge detection device and method based on pressure monitoring |
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