CN207850564U - Transmission line wire Temperature Distribution formula monitoring device based on BOTDA - Google Patents
Transmission line wire Temperature Distribution formula monitoring device based on BOTDA Download PDFInfo
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- CN207850564U CN207850564U CN201721851621.6U CN201721851621U CN207850564U CN 207850564 U CN207850564 U CN 207850564U CN 201721851621 U CN201721851621 U CN 201721851621U CN 207850564 U CN207850564 U CN 207850564U
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Abstract
The utility model is related to Distributed Optical Fiber Sensing Techniques field, it is related to the transmission line wire Temperature Distribution formula monitoring device based on BOTDA.Transmission line wire Temperature Distribution formula monitoring device based on BOTDA includes optical time domain reflectometer (OTDR), fiber optic temperature (FBG) demodulator, communications network system, computer digital animation unit and the distributed optical fiber sensing system respectively monitored in power transmission line on region is arranged；The monitoring device is not necessarily to the mounting temperature sensor on conducting wire, also the temperature of not direct measure traverse line, but using the brillouin scattering signal that BOTDA equipment measurement obtains as data basis, and then obtain the Temperature Distribution of conducting wire indirectly by data processing, intelligence degree is high, it is calculated automatically convenient for computer, obtains the real time status of transmission line wire Temperature Distribution, there is important economic value and social value.
Description
Technical field
The utility model is related to Distributed Optical Fiber Sensing Techniques fields, in particular to the transmission line of electricity based on BOTDA
Conductor temperature distributed monitoring device.
Background technology
Ultra-high-tension power transmission line during normal operation, transmission pressure will produce higher temperature in large current load
Degree, to which arc sag when transmission line of electricity operation can be changed, if the raising of transmission pressure temperature to a certain extent afterwards transmits electricity entail dangers to
The normal operation of circuit, to unnecessary power failure, tripping and safety accident occur.So to high-voltage power line conductive line
The on-line monitoring of temperature is a problem in the urgent need to address.Currently, for the online prison of high-voltage power line conductive line temperature
Survey method is mainly realized using the method for fixed-point type temp sensor device is installed on conducting wire, however the temperature of conducting wire is by ring
The influence of border temperature and wind speed is bigger, therefore distributed temperature distribution is presented on transmission line of electricity, however there has been no one at present
The monitoring system of the kind full distributed conductor temperature of circuit.
Therefore it provides a kind of transmission line wire Temperature Distribution formula monitoring device based on BOTDA becomes art technology
Personnel's important technological problems to be solved.
Utility model content
The purpose of this utility model is to provide a kind of, and the transmission line wire Temperature Distribution formula monitoring based on BOTDA fills
It sets.
In a first aspect, the utility model embodiment provides a kind of transmission line wire Temperature Distribution formula based on BOTDA
Monitoring device, including optical time domain reflectometer (OTDR), fiber optic temperature (FBG) demodulator, communications network system, computer digital animation list
Member and the distributed optical fiber sensing system respectively monitored in power transmission line on region is set；
The fiber optic temperature (FBG) demodulator is connect with the computer digital animation unit；The computer digital animation unit
It is connect with the optical time domain reflectometer；
Multiple distributed optical fiber sensing systems are demodulated by the communications network system and the fiber optic temperature respectively
Instrument connects.
With reference to first aspect, the utility model embodiment provides the first possible embodiment of first aspect,
In, above-mentioned fiber optic temperature (FBG) demodulator includes monitoring host computer, and is connected to the monitoring host computer and multiple distribution type fiber-optics
Optical fiber between sensor-based system exchanges host.
With reference to first aspect, the utility model embodiment provides second of possible embodiment of first aspect,
In, above-mentioned distributed optical fiber sensing system includes multiple for incuding the sensitive zones of temperature within the scope of preset length, being located at institute
State in sensitive zones and be located at the sensor fibre in the corresponding sensitive zones on power transmission line, by telecommunication optical fiber and the sensing
Fibre Optical Sensor host optical fiber connected optical fiber switch and be connected with the optical fiber switch by telecommunication optical fiber.
With reference to first aspect, the utility model embodiment provides the third possible embodiment of first aspect,
In, above-mentioned sensor fibre is single mode optical fiber.
With reference to first aspect, the utility model embodiment provides the 4th kind of possible embodiment of first aspect,
In, above-mentioned Fibre Optical Sensor host includes light corresponding to sensitive zones and for handling sensor fibre described in corresponding sensitive zones
The optical fiber temperature of variable signal senses host.
With reference to first aspect, the utility model embodiment provides the 5th kind of possible embodiment of first aspect,
In, in above-mentioned sensitive zones, the corresponding sensor fibre is distributed in corresponding sensitive zones inside power transmission line.
With reference to first aspect, the utility model embodiment provides the 6th kind of possible embodiment of first aspect,
In, above-mentioned communications network system include for will optical fiber switch described in multiple distributed optical fiber sensing systems convergence after
It is connected to the optic telecommunication cable that the optical fiber exchanges host, the optical fiber exchanges host and is connect with the monitoring host computer, with
Monitoring host computer is set to interconnect with the more Fibre Optical Sensor hosts.
With reference to first aspect, the utility model embodiment provides the 7th kind of possible embodiment of first aspect,
In, further include power supply system；
The power supply system includes solar cell panel assembly, and is set with electricity consumption in the distributed optical fiber sensing system
The electric box of standby connection；
The electric box is also connect with the solar cell panel assembly.
With reference to first aspect, the utility model embodiment provides the 8th kind of possible embodiment of first aspect,
In, accumulator, inverter and step-up transformer are provided in above-mentioned electric box.
With reference to first aspect, the utility model embodiment provides the 9th kind of possible embodiment of first aspect,
In, above-mentioned battery panel components include pedestal, setting strut on the base, the sun on the strut top are arranged on the sunny side
Energy solar panel and the conducting wire being connected between the solar panel and electric box.
Advantageous effect：
The utility model embodiment provides a kind of transmission line wire Temperature Distribution formula monitoring device based on BOTDA,
Optical time domain reflectometer (OTDR), fiber optic temperature (FBG) demodulator, communications network system, computer digital animation unit and setting are being transmitted electricity
Line respectively monitors the distributed optical fiber sensing system on region；Fiber optic temperature (FBG) demodulator is connect with computer digital animation unit；Meter
Calculation machine data processing unit is connect with optical time domain reflectometer；Multiple distributed optical fiber sensing systems pass through communications network system respectively
It is connect with fiber optic temperature (FBG) demodulator.The monitoring device is not necessarily to the mounting temperature sensor on conducting wire, also not direct measure traverse line
Temperature, but the brillouin scattering signal obtained using BOTDA equipment measurement is as data basis, so that it is indirect by data processing
The Temperature Distribution of conducting wire is obtained, intelligence degree is high, is calculated automatically convenient for computer, and transmission line wire temperature point is obtained
The real time status of cloth has important economic value and social value.
Other feature and advantage of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood by implementing the utility model.The purpose of this utility model and other advantages are illustrating
Specifically noted structure is realized and is obtained in book, claims and attached drawing.
To enable the above objects, features, and advantages of the utility model to be clearer and more comprehensible, preferred embodiment cited below particularly, and
The appended attached drawing of cooperation, is described in detail below.
Description of the drawings
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, other drawings may also be obtained based on these drawings.
Fig. 1 is the transmission line wire Temperature Distribution formula monitoring device based on BOTDA that the utility model embodiment provides
Frame diagram；
Fig. 2 is the transmission line wire Temperature Distribution formula monitoring device based on BOTDA that the utility model embodiment provides
The frame diagram of middle fiber optic temperature (FBG) demodulator；
Fig. 3 is the transmission line wire Temperature Distribution formula monitoring device based on BOTDA that the utility model embodiment provides
The frame diagram of middle distributed optical fiber sensing system；
Fig. 4 is the transmission line wire Temperature Distribution formula monitoring device based on BOTDA that the utility model embodiment provides
The structural schematic diagram of middle distributed optical fiber sensing system；
Fig. 5 is the transmission line wire Temperature Distribution formula monitoring device based on BOTDA that the utility model embodiment provides
System schematic；
Fig. 6 is the transmission line wire Temperature Distribution formula monitoring device based on BOTDA that the utility model embodiment provides
Optical time domain reflection technology schematic diagram.
Reference numeral：
100- optical time domain reflectometers；200- computer digital animation units；300- distributed optical fiber sensing systems.
Specific implementation mode
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality
Novel protected range.
It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
The utility model is further described in detail below through specific implementation examples and in conjunction with the accompanying drawings.
With reference to shown in figure 1- Fig. 6：
The utility model embodiment provides a kind of transmission line wire Temperature Distribution formula monitoring device based on BOTDA,
The utility model embodiment provides a kind of transmission line wire Temperature Distribution formula monitoring device based on BOTDA, and optical time domain is anti-
It penetrates instrument 100 (OTDR), fiber optic temperature (FBG) demodulator, communications network system, computer digital animation unit 200 and is arranged in power transmission line
Distributed optical fiber sensing system 300 on each monitoring region；Fiber optic temperature (FBG) demodulator connects with computer digital animation unit 200
It connects；Computer digital animation unit 200 is connect with optical time domain reflectometer 100；Multiple distributed optical fiber sensing systems 300 lead to respectively
Communications network system is crossed to connect with fiber optic temperature (FBG) demodulator.
The utility model embodiment provides a kind of transmission line wire Temperature Distribution formula monitoring device based on BOTDA,
Optical time domain reflectometer 100 (OTDR), fiber optic temperature (FBG) demodulator, communications network system, computer digital animation unit 200 and setting
The distributed optical fiber sensing system 300 on region is respectively monitored in power transmission line；Fiber optic temperature (FBG) demodulator and computer digital animation list
Member 200 connects；Computer digital animation unit 200 is connect with optical time domain reflectometer 100；Multiple distributed optical fiber sensing systems
300 are connect by communications network system with fiber optic temperature (FBG) demodulator respectively.The monitoring device is not necessarily to install temperature biography on conducting wire
Sensor, the also temperature of not direct measure traverse line, but using the brillouin scattering signal that BOTDA equipment measurement obtains as data base
Plinth, and then the Temperature Distribution of conducting wire is obtained by data processing indirectly, intelligence degree is high, is counted automatically convenient for computer
It calculates, obtains the real time status of transmission line wire Temperature Distribution, there is important economic value and social value.
In a kind of embodiment provided by the utility model, the fibre-optic terminus in optoelectronic composite cable and monitoring host Brillouin
Optical time-domain analyzer BOTDA sensors are attached, and BOTDA sensors carry out Signal sampling and processing.By RG45 Ethernets,
RS-232 serial ports and USB carry out data transmission, and data are uploaded to remote monitoring host.
It is to integrate optical-electric module, hardware module, computer and the information processing technology.
It is put including super-narrow line width semiconductor laser light resource, microwave frequency detection, burst pulse driving circuit, Polarization Control, light
Greatly, the function modules such as signal detection, ultra-high-speed data acquisition, pump light and detection light are noted from the both ends of optical fiber respectively respectively
Enter, when pump light and the difference on the frequency of detection light equal with the Brillouin shift in some section in optical fiber, which will occur
Energy transfer occurs between two-beam for excited Brillouin enlarge-effect.By scanning probe light frequency, optical fiber any point can get
Brillouin's frequency spectrum, measured to obtain distributed strain and temperature.
Super-narrow line width semiconductor laser light resource, microwave frequency detection, burst pulse driving circuit, Polarization Control, light amplification.
The function modules such as signal detection, ultra-high-speed data acquisition.
The function modules such as temperature monitoring, strain monitoring, affair alarm, data analysis, visualization display.
The utility model embodiment provide it is a kind of can be to the reality of the running temperature of power optical fiber circuit, strain and current-carrying capacity
When on-line monitoring, fault identification and the multifunctional optical fiber distributed on line monitoring system of positioning and warning function.Including BOTDA master
Machine, display, user software and corresponding external component composition, can directly connect with sensing optic cable, realization fiber optic temperature,
Strain measurement.
Further include super-narrow line width semiconductor laser light resource, microwave frequency detection, burst pulse driving circuit, Polarization Control, light
The function modules such as amplification, signal detection, ultra-high-speed data acquisition；When pump light and detection light are respectively from the both ends of optical fiber point
It does not inject, when pump light and the difference on the frequency of detection light equal with the Brillouin shift in some section in optical fiber, which will
Excited Brillouin enlarge-effect occurs, energy transfer occurs between two-beam.By scanning probe light frequency, it can get optical fiber and appoint
The Brillouin's frequency spectrum of any measures to obtain distributed strain and temperature.
Multifunctional optical fiber distributed on line monitoring equipment uses optical time domain reflection OTDR technique meter in one embodiment
It calculates rear orientation light in optical fiber and returns to the time of incidence end to realize failure or event accurate positioning function.One burst pulse light light exists
When being transmitted in optical fiber, its backscatter signals are received in the transmitting terminal of optical fiber, intensity, frequency or the phase of scattering provide edge
The measured information of fiber distribution, and the width of light pulse then provides distance resolution, sends pulse and receives scattering
Time interval reflects the information of distance.
As shown, the utility model multifunctional optical fiber distributed on line monitoring systematic schematic diagram is as shown in Figure 5.We will
Utility model is described further in conjunction with attached drawing.
It is divided into two beams through coupler by the output light of same light source as shown in Figure 5, it is a branch of to be modulated through acousto-optic modulator (AOM)
At pulsed light, then the high power pulse as BOTDA pumps after PS disturbs inclined, EDFA amplifications, Filter filters out ASE noises
Light；Another beam injects lithium niobate electro-optic intensity modulator (EOIM) after EDFA amplifications, and the company of BOTDA is used as after microwave shift frequency
Continuous detection light.Two-beam is injected from the both ends of sensing optic cable respectively, in a fiber opposite transmission, while being injected in pumping pulse light
End measures detection of optical power evolution at any time, after photodetector (D) opto-electronic conversion, using high-speed oscilloscope into line number
According to acquisition, it is subsequently sent to computer and carries out data processing and display.
Specifically measurement process is：It is applied to the microwave modulating frequency fm of EOIM with certain step-size change, corresponds to each
Fm measurements obtain curve of the detection of optical power along fiber distribution, are realized in the cloth at optical fiber different location by scanning fm
Deep gain measurement；A certain position on corresponding optical fiber, the corresponding fm along frequency distribution progress Lorentz curve fitting, peak gain
Brillouin shift as at this repeats this process, the brillouin frequency shift measurement being achieved that along whole optical fiber, due to cloth
In deep frequency displacement and temperature, the wired sexual intercourse of strain, light can be realized according to the Brillouin shift temperature demarcated in advance, the coefficient of strain
The temperature of any point, strain measurement along fibre.
The theoretical calculation formula of Brillouin shift is shown below in optical fiber：
υB=2nV ,/λ P
It is a large amount of theoretical and there are following linear relationships it is demonstrated experimentally that Brillouin shift is with temperature strain：
υB(T, 0)=υB(T0, 0) and+CT, υ·(T-T0)
υB(T0, ε) and=υB(T0, 0) and+Cε, υ·ε
Wherein υB(T0, 0) and it is corresponding Brillouin shift C when optical fiber is without strain under reference temperature T0T, υAnd Cε, υRespectively cloth
In deep frequency displacement temperature coefficient and the coefficient of strain, the two values are about 1MHz/ DEG C and 0.05MHz/ μ when pumping wavelength is 1550nm
ε.We can uniquely determine the variation of temperature or strain by testing the Brillouin shift variation of optical fiber accordingly.
In the alternative of the present embodiment, fiber optic temperature (FBG) demodulator includes monitoring host computer, and be connected to monitoring host computer with
Optical fiber between multiple distributed optical fiber sensing systems 300 exchanges host.
In the alternative of the present embodiment, distributed optical fiber sensing system 300 includes multiple for incuding preset length model
The sensitive zones of interior temperature enclosed, are located in sensitive zones and are located at the sensor fibre in corresponding sensitive zones on power transmission line, passed through
The optical fiber switch and the Fibre Optical Sensor master being connected with optical fiber switch by telecommunication optical fiber that telecommunication optical fiber is connected with sensor fibre
Machine.
In the alternative of the present embodiment, sensor fibre is single mode optical fiber.
In the alternative of the present embodiment, Fibre Optical Sensor host includes corresponding with sensitive zones and for handling phase inductive sensing
The optical fiber temperature of the light variable signal of sensor fibre senses host in region.
In the alternative of the present embodiment, in sensitive zones, corresponding sensor fibre is distributed in corresponding sensitive zones and transmits electricity
Inside line.
In the alternative of the present embodiment, communications network system includes for by multiple distributed optical fiber sensing systems 300
The optic telecommunication cable that optical fiber exchanges host is connected to after middle optical fiber switch convergence, optical fiber exchanges host and connects with monitoring host computer
It connects, so that monitoring host computer interconnects with more Fibre Optical Sensor hosts.
Wherein, distributed optical fiber sensing system 300 is a sensor fibre in OPGW optical.
BOTDA is to 300 emission pulse laser signal of optical fiber composite overhead ground wire i.e. distributed optical fiber sensing system, light
When signal is propagated in a fiber, influenced to will produce back scattering optical signal by fiber optic materials；When the temperature of OPGW, strain occur
After variation, the micro-structure of optical fiber can also change, and cause the centre wavelength of rear orientation light that can shift；After detection
Temperature, the changed position of strain can be calculated to the time of return of scattering light, realizes the space orientation of path monitoring,
And the temperature of each position and strain size along demodulating.The BOTDA temperature obtained and strain information are transmitted by USB interface
To computer digital animation unit 200, while the conducting wire dynamic current-carrying capacity information that current carrying capacity of conductor monitoring system monitoring is obtained
Be transferred to computer digital animation unit 200, along progress on heat loss through convection coefficient calculate and arrangement of conductors formula temperature computation,
And complete the storages of data, management, calculating, result are shown and abnormal alarm etc., reach to the real-time of arrangement of conductors formula temperature
Monitor purpose.
Aerial insulated cable is substituted with optical fiber composite overhead insulating cable, to realize fiber optic communication, lead body temperature
Measure, etc. multiple functions.Measurement data passes to backstage center by optical fiber, by database model carry out intensive data collection,
Analysis, and handled in conjunction with database model, to realize current carrying capacity of conductor control and safe early warning effect.
Using BOTDA, the temperature TOPGW of each sensing point on circuit and stress are demodulated to come, demodulates temperature and answer
Power demodulates to obtain the Temperature Distribution TOPGW of OPGW using BOTDA, and circuit is calculated according to the transient heat balance equation of OPGW
The heat loss through convection coefficient h (t) of upper each spatial point；After the heat loss through convection coefficient for obtaining transmission line of electricity, according to transmission line of electricity OPGW
The condition with the solar radiation power of the arbitrarily corresponding spatial point of conducting wire with regulated linear relationship establishes the steady of OPGW and conducting wire
State thermal balance relational expression；After establishing OPGW and conducting wire steady-state heat balance relational expression, conductor temperature distribution and OPGW temperature are obtained
The relational expression of distribution.The dynamic current-carrying capacity information of lead-in conductor, and solve to obtain the temperature of transmission pressure using Newton iteration method
Distribution.
Using the method for the transmission line wire Temperature Distribution formula monitoring device based on BOTDA, carry out according to the following steps：Step
Rapid one, according to the heat loss through convection coefficient h (t) of each spatial point on the transient heat balance equation computing electric power line of OPGW；Step 2:
The condition according to the solar radiation power of the arbitrarily corresponding spatial point of transmission line of electricity OPGW and conducting wire with regulated linear relationship, builds
The steady-state heat balance relational expression of vertical OPGW and conducting wire；Step 3: the dynamic current-carrying capacity information of lead-in conductor, and use Newton iteration
Method solves to obtain the Temperature Distribution of transmission pressure.
Specifically carry out according to the following steps：Step 1: monitoring to obtain the Temperature Distribution TOPGW of OPGW using BOTDA, foundation is led
Steady-state heat balance equation (1) formula and (2) formula of the corresponding point of line and any one spaces OPGW；Step 2: according to the property of formula (7)
(1) formula is multiplied by after DD/DO and subtracts each other acquisition formula (8) with (2) formula by matter；Step 3: in view of including two unknown in formula (8)
Number：The heat loss through convection coefficient h (t) of conductor temperature TD and grounded-line are obtained using multiple adjacent time measurements of same sensing point
Data acquire the heat loss through convection coefficient h (t) of cable；Step 4: after calculating the heat loss through convection coefficient of grounded-line, equation is only
There are a known variables, bring material and transmission line parameter into, and introduce transmission line wire dynamic current-carrying capacity data, use
Newton iteration method solves to obtain the Temperature Distribution of conducting wire；Step 5: only carried out in a space exploration point in view of above solve,
It only needs to carry out each space exploration point on transmission line of electricity Step 3: step 4 can be achieved with transmission line wire distribution
The monitoring of temperature；
Further include power supply system in the alternative of the present embodiment；Power supply system includes solar cell panel assembly, and
With the electric box that electrical equipment is connect in distributed optical fiber sensing system 300；Electric box is also connect with solar cell panel assembly.
Accumulator, inverter and step-up transformer are provided in the alternative of the present embodiment, in electric box.
In the alternative of the present embodiment, battery panel components include pedestal, are set on the base strut, setting exists on the sunny side
The solar panel on strut top and the conducting wire being connected between solar panel and electric box.
Each distributed optical fiber sensing system 300, by the sensing optic cable and terminal processes host groups with pipeline parallel laid
At each distributed sensing system is responsible for information processing and the positioning work of certain section.Solar electric power supply system, mainly by frame
Set on solar panel on the sunny side, accumulator array and attached power inverter composition, provided not for sensing host
It is interrupted electric energy.Communications network system, including communications optical cable and optical fiber switch, each sensing host of realization and monitoring center lead to
Telecommunication function.In addition, since 300 multidigit of each distributed optical fiber sensing system is in uncultivated next door or depopulated zone, energy free supplies
It gives, so the terminal processes host for each distributed optical fiber sensing system 300 is equipped with solar electric power supply system, ensures that electric energy supplies
It gives.
Also, it monitors host to be arranged in substation, 220V power supply power supplies may be used.
BOTDA equipment can be directly connected to 220V power supplys, and by 220V power supply power supplies.
Distributed optical fiber temperature sensing system is totally different from traditional temperature sensor based on electric signal and point
Formula fibre optic temperature sensor, either from the difficulty of measuring technique, the content of measuring temperature and index, or the occasion from measurement
A new stage has all been increased to range.Distributed optical fiber temperature transducer system, can on entire continuous optical fiber, with
The continuous function form of distance, measures the temperature value of each point on optical fiber.This technology only needs an optical fiber that can measure number
The temperature of ten kilometers of distances, a host can also measure several fibers simultaneously.It is distributed for the line styles system such as cable
The construction of fiber temperature sensing system is very convenient.
The temperature-measuring system of distributed fibers of transmission line of electricity uses the sensor that optical fiber is acquired as temperature information.Pass through measurement
The scattered wave that incident laser generates at different distance in a fiber, predicts the real time temperature information for the points up to ten thousand for prolonging fiber distribution.
The system is specifically applied to region (multiple spot, linear, face type) thermometric, and may be implemented to overheating, being subcooled, fire behavior caused by temperature
Hidden danger etc. is prejudged and is alarmed.
Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it
System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should
Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole
Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new
The range of each embodiment technical solution of type.
Claims (10)
1. a kind of transmission line wire Temperature Distribution formula monitoring device based on BOTDA, which is characterized in that including：Optical time domain is anti-
Instrument (OTDR), fiber optic temperature (FBG) demodulator, communications network system, computer digital animation unit and setting is penetrated respectively to monitor in power transmission line
Distributed optical fiber sensing system on region；
The fiber optic temperature (FBG) demodulator is connect with the computer digital animation unit；The computer digital animation unit and institute
State optical time domain reflectometer connection；
Multiple distributed optical fiber sensing systems are connected by the communications network system and the fiber optic temperature (FBG) demodulator respectively
It connects.
2. the transmission line wire Temperature Distribution formula monitoring device according to claim 1 based on BOTDA, feature exist
In the fiber optic temperature (FBG) demodulator includes monitoring host computer, and is connected to the monitoring host computer and multiple distribution type fiber-optics
Optical fiber between sensor-based system exchanges host.
3. the transmission line wire Temperature Distribution formula monitoring device according to claim 2 based on BOTDA, feature exist
In the distributed optical fiber sensing system includes multiple for incuding the sensitive zones of temperature within the scope of preset length, being located at institute
State in sensitive zones and be located at the sensor fibre in the corresponding sensitive zones on power transmission line, by telecommunication optical fiber and the sensing
Fibre Optical Sensor host optical fiber connected optical fiber switch and be connected with the optical fiber switch by telecommunication optical fiber.
4. the transmission line wire Temperature Distribution formula monitoring device according to claim 3 based on BOTDA, feature exist
In the sensor fibre is single mode optical fiber.
5. the transmission line wire Temperature Distribution formula monitoring device according to claim 4 based on BOTDA, feature exist
In the Fibre Optical Sensor host includes light corresponding to sensitive zones and for handling sensor fibre described in corresponding sensitive zones
The optical fiber temperature of variable signal senses host.
6. the transmission line wire Temperature Distribution formula monitoring device according to claim 5 based on BOTDA, feature exist
In in the sensitive zones, the corresponding sensor fibre is distributed in corresponding sensitive zones inside power transmission line.
7. the transmission line wire Temperature Distribution formula monitoring device according to claim 6 based on BOTDA, feature exist
In, the communications network system include for will be after the convergence of optical fiber switch described in multiple distributed optical fiber sensing systems
It is connected to the optic telecommunication cable that the optical fiber exchanges host, the optical fiber exchanges host and is connect with the monitoring host computer, with
Monitoring host computer is set to interconnect with the more Fibre Optical Sensor hosts.
8. the transmission line wire Temperature Distribution formula monitoring device according to claim 7 based on BOTDA, feature exist
In further including power supply system；
The power supply system includes solar cell panel assembly, and is connected with electrical equipment in the distributed optical fiber sensing system
The electric box connect；
The electric box is also connect with the solar cell panel assembly.
9. the transmission line wire Temperature Distribution formula monitoring device according to claim 8 based on BOTDA, feature exist
In being provided with accumulator, inverter and step-up transformer in the electric box.
10. the transmission line wire Temperature Distribution formula monitoring device according to claim 9 based on BOTDA, feature exist
Include pedestal, setting strut on the base, the sun on the strut top is set on the sunny side in, battery panel components
Energy solar panel and the conducting wire being connected between the solar panel and electric box.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441651A (en) * | 2019-07-25 | 2019-11-12 | 武汉钜风科技有限公司 | A kind of transmission line status detection method and system based on OPGW |
| CN112432694A (en) * | 2020-11-06 | 2021-03-02 | 中冶建筑研究总院有限公司 | Industrial plant power monitoring method based on distributed optical fiber sensor |
-
2017
- 2017-12-26 CN CN201721851621.6U patent/CN207850564U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110441651A (en) * | 2019-07-25 | 2019-11-12 | 武汉钜风科技有限公司 | A kind of transmission line status detection method and system based on OPGW |
| CN110441651B (en) * | 2019-07-25 | 2021-07-30 | 武汉钜风科技有限公司 | Transmission line state detection method and system based on OPGW |
| CN112432694A (en) * | 2020-11-06 | 2021-03-02 | 中冶建筑研究总院有限公司 | Industrial plant power monitoring method based on distributed optical fiber sensor |
| CN112432694B (en) * | 2020-11-06 | 2021-11-02 | 中冶建筑研究总院有限公司 | Industrial plant power monitoring method based on distributed optical fiber sensor |
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