CN109188265A - For monitoring SF on-line6The devices and methods therefor of circuit breaker failure type - Google Patents
For monitoring SF on-line6The devices and methods therefor of circuit breaker failure type Download PDFInfo
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- CN109188265A CN109188265A CN201811165829.1A CN201811165829A CN109188265A CN 109188265 A CN109188265 A CN 109188265A CN 201811165829 A CN201811165829 A CN 201811165829A CN 109188265 A CN109188265 A CN 109188265A
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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
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
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Abstract
The invention discloses one kind for monitoring on-lineThe devices and methods therefor of circuit breaker failure type, including laser emitting module, photoelectric detection module and data processing/transmission module, laser emitting module are narrow linewidth laser；Photoelectric detection module is made of the gas absorption chamber of each branch road；Data processing/transmission module is divided into time division multiplexing method structure and wavelength-division multiplex method structure.Operating method includes time division multiplexing method and wavelength-division multiplex method.The present invention has can be directly to existingThe advantages that gas insulation breaker is reequiped, and apparatus structure is simple, equipment service efficiency economical and efficient, convenient for installation and maintenance, and detection accuracy is high, and response is fast, and accuracy is high, electromagnetism interference.It can be widely applied toThe monitoring and early warning of insulation status in gas insulation breaker.
Description
Technical field
The present invention relates to gas detection technologies, and in particular to one kind is for monitoring SF on-line6The dress of circuit breaker failure type
It sets and its method.
Technical background
SF6It is a kind of colourless, tasteless, nontoxic, non-corrosive gas under room temperature, with high dielectric strength and lower
Fusing point, insulating capacity is about 215 times of air, in addition, the advantages that it is there are also quite outstanding arc extinction performance.So mesh
A large amount of SF are installed in preceding electric system6Electric insulation equipment.But from the point of view of practical operation situation, the manufacture work of power equipment
The factors such as skill, installation method and ageing equipment make SF6Inevitably occur insulation defect in gas insulation breaker, and this
It will lead to equipment emerged in operation shelf depreciation and superheating phenomenon, these phenomenons will lead to the SF in gas tank6Gas transmitting is decomposed,
A variety of pernicious gases and substance are generated, to SF6Gas insulation breaker safe operation constitutes serious security risk, and different
Insulation defect will lead to SF6The process that gas decomposes, rate and product species, the difference of concentration.By to SF6Decompose gas
Component and its content real-time monitoring, can to the type of equipment fault and it is unknown make supposition, and then predict the hair of failure
It penetrates, this has great significance to the safe operation of electrical system.
SF6Gas insulation breaker main inside failure is electric discharge and overheating fault.In electric arc, spark and corona discharge are made
Under, the SF of equipment6Gas decomposition product mainly has SO2、H2O、HF、SOF2；When emitting partial discharges fault, it can generate micro
SO2, HF and H2The products such as S；SO can be generated when emitting overheating fault2, HF, H2S and SO2The products such as F and it will lead to air chamber pressure
The abnormal raising with temperature；When accident design solid insulation, CF can be also generated4, H2S, CO and CO2Deng.So passing through detection
SO2And H2S gas can be used as the characteristic gas for judging whether there is failure, be aided with detection HF, CF4, CO, CO2And gas chamber temperature
It, can be with the failure mode inside accurate judgement equipment with the factors such as pressure.
And current, China outfield SF6Gas insulation breaker substantial amounts and it is most of be fitted without on-line monitoring system,
The method that these equipment detect insulation status is mainly periodically manually evacuated detection and temperature and pressure method, infrared imaging method, gas laser
Radar etc..Artificial pumping overhauls this method and does not simply fail to accomplish real-time detection, and can not live detection, opening and again
It is also easy to lead to the problem of newly closed when closed gas tank；And temperature and pressure method has that structure is complicated, equipment is various, is easy by electromagnetic interference
The shortcomings that；Infrared-gas imaging is expensive, and cannot judge fault type, and laser radar apparatus is various and expensive, Zhi Nengyong
In individual important nodes.
Summary of the invention
The purpose of the present invention is to problems present on the prior art, provide a kind of point based on spectral absorption technology
Cloth SF6Gas on-line monitoring system is decomposed, to electric insulation equipment SF in electric system6Decompose the component and its content of gas
Real-time perfoming accurately monitors, and type to equipment fault and it is unknown make supposition, and then predict the transmitting of failure.
To achieve the goals above, the present invention takes following organization plan.For monitoring SF on-line6Circuit breaker failure type
Device, including laser emitting module, photoelectric detection module and data processing/transmission module,
The laser emitting module is narrow linewidth laser；
The photoelectric detection module is made of the gas absorption chamber of each branch road；The gas absorption chamber, including blanket gas
The side gas piping of tank, the sealing gas tank connects arc-extinguishing chamber of circuit breaker by the first sealing valve, and seals gas tank and sealing
Dust filter screen is housed, the other side gas piping for sealing gas tank connects gas outlet by the second sealing valve between valve；Blanket gas
Tank is provided with optical fiber and fixes around axis, and optical fiber fixation is wound with hollow photon crystal, hollow photon crystal both ends and first on axis
Transmission fiber and the second transmission fiber end are provided with ceramic contact pin, and the ceramic contact pin at hollow photon crystal both ends, first pass
It loses fibre and is connected with the ceramic contact pin of the second transmission fiber end by the adapter sleeves with opening, temperature sensing optical fiber, first pass
It loses fibre and the second transmission fiber passes through blanket gas tank top opening and protrudes into, and opening passes through sealant and seals；
Data processing/the transmission module is divided into time division multiplexing method structure and wavelength-division multiplex method structure:
The time division multiplexing method structure includes light path switch and optical detector, and light path switch input terminal is connected by splitter
Narrow linewidth laser, output end connect the optical detector and temperature-measuring optical fiber sensor host machine, optical detection by gas absorption chamber
Device is connect by A/D converter with single-chip microcontroller, and temperature-measuring optical fiber sensor host machine is connect with single-chip microcontroller, and single-chip microcontroller passes through wireless signal
Transmitter is connect with wireless signal receiver signal, and wireless signal receiver and narrow linewidth laser are separately connected computer；
The wavelength-division multiplex method structure includes temperature-measuring optical fiber sensor host machine and optical detector, and narrow linewidth laser successively leads to
Cross combiner and splitter connect with gas absorption chamber, gas absorption chamber respectively with temperature-measuring optical fiber sensor host machine and grating beam splitting
Device connection, grating beam splitting device are connect by optical detector with A/D converter, A/D converter and temperature-measuring optical fiber sensor host machine point
Not Tong Guo single-chip microcontroller connect with wireless signal transmitter, wireless signal transmitter is connect with wireless signal receiver signal, wirelessly
Signal receiver is connected to a computer.
One kind is for monitoring SF on-line6The operating method of the device of circuit breaker failure type, including time division multiplexing method and wave
Divide multiplexing method, implementation method is as follows:
Sealing gas tank is connected with the object gas in arc-extinguishing chamber of circuit breaker, when narrow line width regulatable laser issues laser
When, laser is entered in the hollow photon crystal in sealing gas tank by optical fiber, and the object gas institute being diffused into optical fiber gap
It absorbs, optical detector receives the laser after being absorbed, and thus measures SF6Gas decomposition components and its content；Single-chip microcontroller is according to gas
The peak width of absorption peak extrapolates each gas absorption chamber pressure in body absorption line；
When using the time division multiplexing method, narrow line width regulatable laser is controlled by computer issues corresponding object gas
The laser of selected wavelength assign to the optoelectronic switch of each branch by splitter, thereafter the laser enter gas absorption chamber with
Under test gas interaction therein, enters back into optical detector, optical detector converts optical signal into analog electrical signal, passes through
A/D converter converts the signal to digital signal, and finally the digital signal is passed to single-chip microcontroller；Temperature-measuring optical fiber sensor host machine simultaneously
Temperature sensing optical fiber by protruding into aspiration room obtains the temperature information of under test gas in real time, and list is passed in the form of digital signal
In piece machine, single-chip microcontroller will be passed to computer by wireless signal transmitter and wireless signal receiver after incoming signal processing
It is interior.
When use is described uses wavelength-division multiplex method, laser works at the same time generation by more narrow line width regulatable lasers,
Narrow line width regulatable laser number of units is identical as object gas number, and every narrow line width regulatable laser exports corresponding different target
The laser of the selected wavelength of gas, then by laser beam is synthesized beam of laser after combiner, and assign to gas through splitter and inhale
It interacts in getter room under test gas, then the light beam containing multiple wavelength lasers is divided to laser by grating beam splitting device
From and entering in corresponding optical detector, and convert optical signal into analog electrical signal, then by A/D converter by analog signal
It is converted into digital electric signal and is passed to single-chip microcontroller, while temperature-measuring optical fiber sensor host machine is real by the temperature sensing optical fiber for protruding into aspiration room
When obtain the temperature information of under test gas, and single-chip microcontroller is passed in the form of digital signal, single-chip microcontroller is by the signal processing of input
Computer is passed to by wireless signal transmitter and wireless signal receiver afterwards；It is absorbed to obtain the gas of each branch in real time
Absorption line of the indoor gas under each wavelength then obtains the concentration and pressure letter of object gas in each absorption gas chamber
Breath.
Further, the object gas is H2S、SO2、HF、CO2, CO and CF4。
Further, the selected wavelength of the corresponding object gas is the absorption peak of the object gas in corresponding wavelength.
Present invention employs hollow-core fibers as gas chamber is absorbed, and not only ensure that light absorption long-range, but also make structure simpler
Change and reliable, improves the stability and precision of detection；It, can be to avoid signal by power transformation using light as signal transport vehicle
The strong electromagnetic stood；And the method for using built-in sensors, that is, external interference is avoided, there is the real-time data measured of energy, is improved
Stability and accuracy；Using spectral absorption technology, object gas will not be damaged, does not change GIS internal state, sensor body
Product is small, and far from GIS action component, will not influence its normal operation.Data transmission uses wireless system, that is, reduces optical fiber
The amount of building, while can be convenient information transmission use, avoid information island phenomenon；Spectral information before being transmitted just
Preliminary treatment has been carried out, the transmission quantity of information is reduced.With can be directly to existing SF6Gas insulation breaker is reequiped,
Apparatus structure is simple, equipment service efficiency economical and efficient, convenient for installation and maintenance, and detection accuracy is high, and response is fast, and accuracy is high, resists
The advantages that electromagnetic interference.It can be widely applied to SF6The monitoring and early warning of insulation status in gas insulation breaker.
Detailed description of the invention
Fig. 1 is the schematic diagram of time division multiplexing method structure in the present invention；
Fig. 2 is the schematic diagram of wavelength-division multiplex method structure in the present invention；
Fig. 3 is the structure chart of photoelectric detection module 2 in the present invention；
Fig. 4 is enlarged diagram at A in Fig. 3；
In figure: 1- laser emitting module, 11- narrow line width regulatable laser；2- photoelectric detection module, 21- gas absorb
Room；3- data processing/transmission module, 31- light path switch, 32- optical detector, 33- temperature-measuring optical fiber sensor host machine, 34-A/D turn
Parallel operation, 35- single-chip microcontroller, 36- wireless signal transmitter, 37- wireless signal receiver, 38- computer；4- splitter, 5- combining
Device；
300- arc-extinguishing chamber of circuit breaker, 301- temperature sensing optical fiber, the first transmission fiber of 302-, the second transmission fiber of 303-, 304-
First sealing valve, 305- anti-dust filter mesh, 306- seal gas tank, 307- hollow photon crystal, and 308- optical fiber is fixed around axis, 309-
Second sealing valve, 310- ceramic contact pin, 311- adapter sleeve.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.Referring to Fig. 1 to Fig. 4, for monitoring SF on-line6
The device of circuit breaker failure type, including laser emitting module 1, photoelectric detection module 2 and data processing/transmission module 3, it is described
Laser emitting module 1 is narrow linewidth laser 11；
The photoelectric detection module 2 is made of the gas absorption chamber 21 of each branch road；Described 21 (such as Fig. 3 of gas absorption chamber
It is shown), including gas tank 306 is sealed, the side gas piping of the sealing gas tank 306 connects open circuit by the first sealing valve 304
Device arc-chutes 300, and seal and dust filter screen 305 is housed between gas tank 306 and the first sealing valve 304, seal the another of gas tank 306
Side gas piping connects gas outlet by the second sealing valve 309；It is fixed around axis 308, optical fiber that sealing gas tank 306 is provided with optical fiber
Fixation is wound with hollow photon crystal 307,307 both ends of hollow photon crystal and the first transmission fiber 302 and second on axis 308
303 end of transmission fiber is provided with ceramic contact pin 310, and the ceramic contact pin 310, first at 307 both ends of hollow photon crystal transmits
Optical fiber 302 passes through (such as Fig. 4 that is connected with the adapter sleeves 311 being open with the ceramic contact pin 310 of 303 end of the second transmission fiber
It is shown), temperature sensing optical fiber 301, the first transmission fiber 302 and the second transmission fiber 303 are protruded by blanket gas tank top opening,
And opening is sealed by sealant；
Data processing/the transmission module is divided into time division multiplexing method structure (as shown in Figure 1) and wavelength-division multiplex method structure (such as
Shown in Fig. 2):
The time division multiplexing method structure includes light path switch 31 and optical detector 32, and 31 input terminal of light path switch passes through branch
Device 4 connects narrow linewidth laser 11, and output end connects the optical detector 32 and temperature-measuring optical fiber sensing by gas absorption chamber 21
Device host 33, optical detector 32 are connect by A/D converter 34 with single-chip microcontroller 35, temperature-measuring optical fiber sensor host machine 33 and single-chip microcontroller
35 connections, single-chip microcontroller 35 are connect by wireless signal transmitter 36 with 37 signal of wireless signal receiver, wireless signal receiver
37 and narrow linewidth laser 11 be separately connected computer 38；
The wavelength-division multiplex method structure includes temperature-measuring optical fiber sensor host machine 33 and optical detector 32, narrow linewidth laser 11
Pass sequentially through combiner 5 and splitter 4 connect with gas absorption chamber 21, gas absorption chamber 21 respectively with temperature-measuring optical fiber sensor master
Machine 33 and grating beam splitting device 39 connect, and grating beam splitting device 39 is connect by optical detector 32 with A/D converter 34, A/D converter
34 and temperature-measuring optical fiber sensor host machine 33 connect with wireless signal transmitter 36 by single-chip microcontroller 35 respectively, wireless signal transmitter
36 connect with 37 signal of wireless signal receiver, and wireless signal receiver 37 is connected with computer 38.
One kind is for monitoring SF on-line6The operating method of the device of circuit breaker failure type, including time division multiplexing method and wave
Divide multiplexing method, implementation method is as follows:
Sealing gas tank 306 is connected with the object gas in arc-extinguishing chamber of circuit breaker 300, when narrow line width regulatable laser 11
When issuing laser, laser is entered in the hollow photon crystal in sealing gas tank 306 by optical fiber, and is diffused into optical fiber gap
Object gas is absorbed, and optical detector 32 receives the laser after being absorbed, and thus measures SF6Gas decomposition components and its content；
Single-chip microcontroller 35 extrapolates each 21 pressure of gas absorption chamber according to the peak width of absorption peak in gas absorption spectrum line；
When using the time division multiplexing method, narrow line width regulatable laser 11 is controlled by computer 38 issues corresponding target
The laser of the selected wavelength of gas assigns to the optoelectronic switch 31 of each branch, the laser enters gas thereafter by splitter 4
Absorption chamber 21 and under test gas therein interact, and enter back into optical detector 32, optical detector converts optical signal into mould
Quasi- electric signal, converts the signal to digital signal by A/D converter 34, and finally the digital signal is passed to single-chip microcontroller 35；Simultaneously
The temperature that temperature-measuring optical fiber sensor host machine 33 obtains under test gas by protruding into the temperature sensing optical fiber 301 of aspiration room 21 in real time is believed
Breath, and be passed in single-chip microcontroller 35 in the form of digital signal, single-chip microcontroller 35 will be sent out after incoming signal processing by wireless signal
Emitter 36 and wireless signal receiver 37 are passed in computer 38.
When use is described uses wavelength-division multiplex method, laser works at the same time production by more narrow line width regulatable lasers 11
Raw, 11 number of units of narrow line width regulatable laser is identical as object gas number, and every output of narrow line width regulatable laser 11 corresponds to
The laser of the selected wavelength of different target gas, then by laser beam is synthesized beam of laser after combiner 5, and through splitter 4
It assigns to gas to absorb in gas chamber 21 under test gas interaction, laser then will be contained into multiple waves by grating beam splitting device 39
The light beam of long laser separates, and enters in corresponding optical detector 32, and convert optical signal into analog electrical signal, then by A/D
Converter 34 converts digital electric signal for analog signal and is passed to single-chip microcontroller 35, while temperature-measuring optical fiber sensor host machine 33 is by stretching
The temperature sensing optical fiber 301 for entering aspiration room 21 obtains the temperature information of under test gas in real time, and list is passed in the form of digital signal
Piece machine 35, single-chip microcontroller 35 will pass through wireless signal transmitter 36 and the incoming meter of wireless signal receiver 37 after the signal processing of input
Calculation machine 38；Absorption line of the gas under each wavelength in gas absorption chamber 21 to obtain each branch in real time, then
The concentration and pressure information of object gas in each absorption gas chamber 21.Object gas is H2S、SO2、HF、CO2, CO and CF4.It is right
The selected wavelength for answering object gas is the absorption peak of the object gas in corresponding wavelength and the suction for being not at other object gas
Receive wave band.
Embodiment 1: shown in as shown in Figure 1, Figure 3 and Figure 4.One kind is for monitoring SF on-line6(sulfur hexafluoride) circuit breaker failure kind
The device and method of class will install the second sealing valve 309 on the right side of sealing gas tank 306, and left side and breaker take gas converting interface the
One sealing valve 304 is connected, and opens the second sealing valve 309, and will seal in gas tank 306 and be evacuated by gas outlet, is inputting
SF identical with concentration in breaker6Gas is identical as gas atmosphere in breaker up to air pressure, closes the second sealing valve 309,
Open the first sealing valve 304.
Such as Fig. 3, it is connected because absorbing gas chamber 21 with the object gas sealed in gas tank 306, when narrow line width regulatable swashs
When light device 11 issues the laser of certain wavelength and power, laser can be entered the hollow photon crystal in sealing gas tank 306 by optical fiber
In, and the object gas being diffused into optical fiber gap is absorbed, the change of light intensity and gas are dense known to Bill's Blang's theorem
Degree has direct relation, receives the laser after being absorbed by optical detector 32 later, gas with various absorption peak is different, and under test gas exists
The absorption coefficient of corresponding wavelength is it is known that so measurement is assured that specific SF in each gas absorption chamber6Gas decomposition group
Point and its content.
Simultaneously as gas absorption spectrum line absorption peak peak width and gas pressure have direct relation, single-chip microcontroller 35 can basis
The peak width of absorption peak extrapolates each 21 pressure of gas absorption chamber in gas absorption spectrum line.
Such as Fig. 2, when using the time division multiplexing method, narrow line width regulatable laser 11 is by the control sending pair of computer 38
The laser for answering the selected wavelength of object gas assigns to (the light path switch state of optoelectronic switch 31 of each branch by splitter 4
Controlled by single-chip microcontroller 35), the laser enters gas absorption chamber 21 thereafter and under test gas therein interacts, and enters back into light spy
It surveys in device 32, optical detector converts optical signal into analog electrical signal, converts the signal to digital letter by A/D converter 34
Number, finally the digital signal is passed to single-chip microcontroller 35.Temperature-measuring optical fiber sensor host machine 33 is by protruding into the sense of aspiration room 21 simultaneously
Warm optical fiber 301 obtains the temperature information of under test gas in real time, and is passed in single-chip microcontroller 35 in the form of digital signal, single-chip microcontroller 35
It will be passed in computer 38 after incoming signal processing by wireless signal transmitter 36 and wireless signal receiver 37.
Computer 38 can control the state of narrow line width regulatable laser 11 and splitter 4, and can control narrow linewidth can
Tuned laser 11 issues the laser of a certain specific wavelength, the corresponding object gas (H of this wavelength2S、SO2、HF、CO2, CO and
CF4) absorption peak, and be not in the absorption bands of other gases gas absorption chamber 21 Nei.Computer 38 passes through control optical path
Switch 31 only opens a branch and closes remaining branch, after the signal for measuring this branch, then opens another branch simultaneously
And remaining branch is closed, and after repeatedly measuring all tributary signals, changes 11 output wavelength of narrow linewidth laser, in repetition
State process.After all having surveyed each under test gas corresponding wavelength, each branch can be obtained in each wavelength laser
Under signal, that is, complete a measurement period, constantly repeat this period, the gas absorption chamber 21 of each branch can be obtained in real time
Absorption line of the interior gas under each wavelength then obtains the concentration and pressure letter of object gas in each absorption gas chamber 21
Breath.When computer 38 can obtain the component and content of gas in each absorption gas chamber 21, pressure and temperature information in real time, so that it may
SF is judged with this6The operation conditions and fault type of gas insulation breaker.
The hollow photon crystal uses commercial products, and service band is in 2 μm~5 μm.
The single-chip microcontroller uses commercially available 51 single-chip microcontroller of Atmal, with temperature-measuring optical fiber sensor host machine and A/D converter
It is connected, the incoming digital signal of the temperature-measuring optical fiber sensor host machine and A/D converter is united according to the algorithm of programming
Meter, analysis is processed into the concentration for the object gas that each branch gas absorbs in gas chamber 21, pressure and temperature signal, and is sent to
The wireless signal transmitter 36.
The computer 38 uses commercial products, using LabWindows program, for that will transmit the number into computer 38
According to being stored, being arranged and being analyzed, shown, to obtain early warning and staff's analysis.
Embodiment 2: one kind is for monitoring SF on-line6The device and method of circuit breaker failure type, when using the wavelength-division
Multiplexing method, laser work at the same time generation by more narrow line width regulatable lasers 11,11 number of units of narrow line width regulatable laser with
Object gas number is identical, and every narrow line width regulatable laser 11 exports the laser of the selected wavelength of corresponding different target gas,
Again by laser beam is synthesized beam of laser after combiner 5, and through splitter 4 assign to gas absorb in gas chamber 21 under test gas
Laser beam containing multiple wavelength is then separated by grating beam splitting device 39, and entered corresponding by interaction by laser
In optical detector 32, and analog electrical signal is converted optical signal into, then converts digital electricity for analog signal by A/D converter 34
Signal is passed to single-chip microcontroller 35, while temperature-measuring optical fiber sensor host machine 33 is real-time by the temperature sensing optical fiber 301 for protruding into aspiration room 21
The temperature information of under test gas is obtained, and is passed to single-chip microcontroller 35 in the form of digital signal, single-chip microcontroller 35 will be at the signal of input
Computer 38 is passed to by wireless signal transmitter 36 and wireless signal receiver 37 after reason.Other are the same as embodiment 1.
Claims (4)
1. for monitoring SF on-line6The device of circuit breaker failure type, including laser emitting module, photoelectric detection module and data
Processing/transmission module, it is characterised in that:
The laser emitting module is narrow linewidth laser；
The photoelectric detection module is made of the gas absorption chamber of each branch road；The gas absorption chamber, including sealing gas tank, institute
The side gas piping for stating sealing gas tank connects arc-extinguishing chamber of circuit breaker by the first sealing valve, and seals between gas tank and sealing valve
Equipped with dust filter screen, the other side gas piping for sealing gas tank connects gas outlet by the second sealing valve；It is built-in to seal gas tank
There is optical fiber fixed around axis, optical fiber is fixed to be wound with hollow photon crystal, hollow photon crystal both ends and the first transmission light on axis
Fine and the second transmission fiber end is provided with ceramic contact pin, the ceramic contact pin at hollow photon crystal both ends, the first transmission fiber
It is connected with the ceramic contact pin of the second transmission fiber end by the adapter sleeves with opening, temperature sensing optical fiber, the first transmission fiber
Pass through blanket gas tank top opening with the second transmission fiber to protrude into, and opening is sealed by sealant；
Data processing/the transmission module is divided into time division multiplexing method structure and wavelength-division multiplex method structure:
The time division multiplexing method structure includes light path switch and optical detector, and light path switch input terminal connects narrow line by splitter
Wide laser, output end connect the optical detector and temperature-measuring optical fiber sensor host machine by gas absorption chamber, and optical detector is logical
It crosses A/D converter to connect with single-chip microcontroller, temperature-measuring optical fiber sensor host machine is connect with single-chip microcontroller, and single-chip microcontroller is emitted by wireless signal
Device is connect with wireless signal receiver signal, and wireless signal receiver and narrow linewidth laser are separately connected computer；
The wavelength-division multiplex method structure includes temperature-measuring optical fiber sensor host machine and optical detector, and narrow linewidth laser passes sequentially through conjunction
Road device and splitter are connect with gas absorption chamber, and gas absorption chamber connects with temperature-measuring optical fiber sensor host machine and grating beam splitting device respectively
It connects, grating beam splitting device is connect by optical detector with A/D converter, and A/D converter and temperature-measuring optical fiber sensor host machine lead to respectively
It crosses single-chip microcontroller to connect with wireless signal transmitter, wireless signal transmitter is connect with wireless signal receiver signal, wireless signal
Receiver is connected to a computer.
2. a kind of as described in claim 1 for monitoring SF on-line6The operating method of the device of circuit breaker failure type, including
Time division multiplexing method and wavelength-division multiplex method, which is characterized in that its implementation method is as follows:
Sealing gas tank is connected with the object gas in arc-extinguishing chamber of circuit breaker, when narrow line width regulatable laser issues laser,
Laser is entered in the hollow photon crystal in sealing gas tank by optical fiber, and the object gas being diffused into optical fiber gap is inhaled
It receives, optical detector receives the laser after being absorbed, and thus measures SF6Gas decomposition components and its content；Single-chip microcontroller is according to gas
The peak width of absorption peak extrapolates each gas absorption chamber pressure in absorption line；
When using the time division multiplexing method, narrow line width regulatable laser is controlled the choosing for issuing corresponding object gas by computer
The long laser of standing wave assigns to the optoelectronic switch of each branch by splitter, thereafter the laser enter gas absorption chamber with wherein
Under test gas interaction, enter back into optical detector, optical detector converts optical signal into analog electrical signal, passes through A/D
Converter converts the signal to digital signal, and finally the digital signal is passed to single-chip microcontroller；Temperature-measuring optical fiber sensor host machine is logical simultaneously
It crosses and protrudes into the temperature sensing optical fiber of aspiration room and obtain the temperature information of under test gas in real time, and be passed to monolithic in the form of digital signal
In machine, single-chip microcontroller will be passed in computer after incoming signal processing by wireless signal transmitter and wireless signal receiver.
When use is described uses wavelength-division multiplex method, laser works at the same time generation, narrow line by more narrow line width regulatable lasers
Wide tunable laser device number of units is identical as object gas number, and every narrow line width regulatable laser exports corresponding different target gas
Selected wavelength laser, then by laser beam is synthesized beam of laser after combiner, and assign to gas through splitter and absorb gas
It interacts in room under test gas, then the light beam containing multiple wavelength lasers is separated to laser by grating beam splitting device,
And enter in corresponding optical detector, and convert optical signal into analog electrical signal, then converted analog signal by A/D converter
It is passed to single-chip microcontroller for digital electric signal, while temperature-measuring optical fiber sensor host machine obtains in real time by protruding into the temperature sensing optical fiber of aspiration room
The temperature information of under test gas is obtained, and is passed to single-chip microcontroller in the form of digital signal, single-chip microcontroller will lead to after the signal processing of input
It crosses wireless signal transmitter and wireless signal receiver is passed to computer；In gas absorption chamber to obtain each branch in real time
Absorption line of the gas under each wavelength then obtains the concentration and pressure information of object gas in each absorption gas chamber.
3. according to claim 2 for monitoring SF on-line6The operating method of the device of circuit breaker failure type, feature
It is, the object gas is H2S、SO2、HF、CO2, CO and CF4。
4. according to claim 2 for monitoring SF on-line6The operating method of the device of circuit breaker failure type, feature
It is, the selected wavelength of the corresponding object gas is the absorption peak of the object gas in corresponding wavelength.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811165829.1A CN109188265A (en) | 2018-10-08 | 2018-10-08 | For monitoring SF on-line6The devices and methods therefor of circuit breaker failure type |
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| CN201811165829.1A CN109188265A (en) | 2018-10-08 | 2018-10-08 | For monitoring SF on-line6The devices and methods therefor of circuit breaker failure type |
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| CN111562032A (en) * | 2020-06-03 | 2020-08-21 | 山东电工电气集团有限公司 | Combined electrical apparatus temperature monitoring method based on fiber bragg grating sensor |
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| CN113114249A (en) * | 2021-03-05 | 2021-07-13 | 电子科技大学 | Broadband high-speed optical sampling analog-digital converter implementation device and method |
| CN113218906A (en) * | 2021-04-19 | 2021-08-06 | 国网江苏省电力有限公司检修分公司 | Sulfur hexafluoride decomposition component monitoring device and method based on laser transmission signals |
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| CN110118752A (en) * | 2019-05-24 | 2019-08-13 | 无锡佶达德光电子技术有限公司 | Laser detection system for underground pipe gallery |
| CN110686724A (en) * | 2019-09-04 | 2020-01-14 | 国网浙江省电力有限公司嘉兴供电公司 | High-voltage circuit breaker gas detection device and method based on ubiquitous power Internet of things |
| CN110686724B (en) * | 2019-09-04 | 2022-09-13 | 国网浙江省电力有限公司嘉兴供电公司 | High-voltage circuit breaker gas detection device and method based on ubiquitous power Internet of things |
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