CN103900529B - Power transmission line dip measuring device and its method based on fiber grating sensing technology - Google Patents
Power transmission line dip measuring device and its method based on fiber grating sensing technology Download PDFInfo
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- CN103900529B CN103900529B CN201410075240.8A CN201410075240A CN103900529B CN 103900529 B CN103900529 B CN 103900529B CN 201410075240 A CN201410075240 A CN 201410075240A CN 103900529 B CN103900529 B CN 103900529B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000005516 engineering process Methods 0.000 title claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 57
- 238000012545 processing Methods 0.000 claims abstract description 14
- 238000010408 sweeping Methods 0.000 claims abstract description 12
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 238000005259 measurement Methods 0.000 claims description 11
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- 238000001514 detection method Methods 0.000 claims description 4
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- 230000005611 electricity Effects 0.000 description 2
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C1/00—Measuring angles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/02—Details
- G01C9/06—Electric or photoelectric indication or reading means
- G01C2009/066—Electric or photoelectric indication or reading means optical
Abstract
The present invention discloses power transmission line dip measuring device and its method based on fiber grating sensing technology, it is characterised in that the device includes：Data acquisition module, temperature and strain variation data for gathering power transmission line to be measured in real time, the data acquisition module includes two fiber Bragg grating strain sensors and a tripod, three of the tripod while including regular length while and two adjustable length sides, a fiber Bragg grating strain sensor is installed on every adjustable length side；Optical signal transceiver and demodulation module, for launching narrow-band frequency-sweeping light and the optical signal demodulation by reception that the fiber Bragg grating (FBG) demodulator is produced to data acquisition module；Data processing module, for obtaining the temperature and strain variation data of power transmission line to be measured from the optical signal after demodulation, and calculates power transmission line inclination angle to be measured.
Description
Technical field
The present invention relates to field of sensing technologies, and in particular to the power transmission line measurement of dip angle dress based on fiber grating sensing technology
Put and its method.
Background technology
Traditional power transmission line measurement of dip angle technology is based on electronic information is handled, when measuring power transmission line inclination angle by active
Power supply, the factor restriction such as electromagnetic interference, signal remote transmission are unstable, data transmission capacity is limited, limit power transmission line inclination angle
The safety and reliability of measurement.
The content of the invention
The traditional power transmission line measurement of dip angle of the technical problems to be solved by the invention is by actively powered, electromagnetic interference, signal
The factor such as remote transmission is unstable, data transmission capacity is limited restriction, limit the security of power transmission line measurement of dip angle with it is reliable
Property.
For this purpose, the present invention proposes the power transmission line dip measuring device based on fiber grating sensing technology, the device bag
Include：
Data acquisition module, temperature and strain variation data for gathering power transmission line to be measured in real time, the data acquisition
Module includes two fiber Bragg grating strain sensors and a tripod, and three sides of the tripod include a regular length
While and two it is adjustable length while, a fiber Bragg grating strain sensor is installed on every adjustable length side；
Optical signal transceiver and demodulation module, for launching the narrow of the fiber Bragg grating (FBG) demodulator generation to data acquisition module
With sweep light and by the optical signal demodulation of reception；
Data processing module, temperature and strain variation number for obtaining power transmission line to be measured from the optical signal after demodulation
According to, and calculate power transmission line inclination angle to be measured.
Wherein, the fiber Bragg grating strain sensor includes temperature-compensating grating and strain grating, the temperature-compensating light
The Temperature cross-over that grid are used to compensate strain grating is sensitive.
Wherein, the instantaneous value of the centre wavelength of the fiber Bragg grating strain sensor in the data acquisition module is according in real time
The data of collection are determined.
Wherein, the optical signal transceiver includes optical signal transceiver unit and fiber Bragg grating (FBG) demodulator with demodulation module, described
Optical signal transceiver unit is used for the narrow-band frequency-sweeping light produced to the data acquisition module transmitting fiber Bragg grating (FBG) demodulator and will
The optical signal launch of reception is to the fiber Bragg grating (FBG) demodulator；The fiber Bragg grating (FBG) demodulator is used to solve dim signal.
Wherein, the fiber Bragg grating strain sensor of the data acquisition module leads to the optical signal transceiver with demodulation module
Cross OPGW or OPPC connection.
Wherein, the data acquisition module further comprises that two stiffness factors are identical and known spring, a spring
Be installed in parallel with a fiber Bragg grating strain sensor on one adjustable length side of tripod, another spring and another
Fiber Bragg grating strain sensor is installed in parallel on another adjustable length side of tripod.
Wherein, the fiber Bragg grating strain sensor includes fiber grating displacement sensor, and the fiber grating displacement is passed
Sensor is used for temperature, the strain variation data for gathering power transmission line to be measured, and calculates the real-time displacement on the adjustable length side of tripod
Delta data.
Wherein, the data processing module from the optical signal after demodulation specifically for obtaining real-time power transmission line to be measured
Temperature and strain variation data, determine the instantaneous value of the centre wavelength of fiber Bragg grating strain sensor, according to the centre wavelength
The change in displacement for being worth to adjustable length side in real time, calculate the real-time length of side on tripod adjustable length side, and by remaining
String theorem calculates power transmission line inclination angle to be measured.
Preferably, the device also includes client modules, shown for electronic geographic, power network parameter is monitored, log query
And help.
The method that measurement of dip angle is carried out based on said apparatus, this method is included：
S1. the temperature of power transmission line to be measured and the data of stress variation, the data are gathered in real time by data acquisition module
The instantaneous value of the centre wavelength of fiber Bragg grating strain sensor in acquisition module is determined according to the data gathered in real time；
S2. narrow-band frequency-sweeping light is launched to the data acquisition module by optical signal transceiver and demodulation module；
S3. the narrow-band frequency-sweeping light with the centre wavelength phase co-wavelength of fiber Bragg grating strain sensor is reflexed into optical signal to receive
Hair and demodulation module；
S4. the optical signal received optical signal transceiver and demodulation module carries out power detection, and by the optical signal solution
It is adjusted to the data signal of Wavelength-encoding；
S5. according to obtained data signal, temperature and stress variation data and the calculating three of power transmission line to be measured are therefrom obtained
The real-time displacement delta data on the adjustable length side of corner bracket, the length of data processing module intermediate cam frame is determined according to change in displacement
The length on variable side, power transmission line inclination angle to be measured is calculated with the cosine law.
Compared to prior art, the beneficial effect of the method for the invention provided is：Fiber grating of the present invention is passed
Sensor have passive, electromagnetism interference, precision height, small volume light weight, the features such as disturb anticorrosive, and it can collect information
With transmission, a sensor includes two gratings to sensing, and wavelength change is made the difference, so can be effectively
Fiber-optic grating sensor is excluded to strain and the sensitive interference of Temperature cross-over, influence of the temperature to strain is excluded, makes result more smart
Really.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, can be with root
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 shows the power transmission line dip measuring device structure chart based on fiber grating sensing technology；
Fig. 2 shows the side that measurement of dip angle is carried out using the power transmission line dip measuring device based on fiber grating sensing technology
Method flow chart；
Fig. 3 shows the data acquisition module in embodiment 1；
Fig. 4 shows the data acquisition module in embodiment 2.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is explicitly described, it is clear that described embodiment be the present invention
A part of embodiment, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art are not having
The every other embodiment obtained under the premise of creative work is made, the scope of protection of the invention is belonged to.
Power transmission line dip measuring device based on fiber grating sensing technology, as shown in figure 1, the device includes：
Data acquisition module, temperature and strain variation data for gathering power transmission line to be measured in real time, the data acquisition
Module includes two fiber Bragg grating strain sensors and a tripod, and three sides of the tripod include a regular length
While and two it is adjustable length while, a fiber Bragg grating strain sensor is installed on every adjustable length side；
Optical signal transceiver and demodulation module, for launching the narrow of the fiber Bragg grating (FBG) demodulator generation to data acquisition module
With sweep light and by the optical signal demodulation of reception；
Data processing module, temperature and strain variation number for obtaining power transmission line to be measured from the optical signal after demodulation
According to, and calculate power transmission line inclination angle to be measured.
Wherein, the fiber Bragg grating strain sensor includes temperature-compensating grating and strain grating, the temperature-compensating light
The Temperature cross-over that grid are used to compensate strain grating is sensitive.
Wherein, the instantaneous value of the centre wavelength of the fiber Bragg grating strain sensor in the data acquisition module is according in real time
The data of collection are determined.
Wherein, the optical signal transceiver includes optical signal transceiver unit and fiber Bragg grating (FBG) demodulator with demodulation module, described
Optical signal transceiver unit is used for the narrow-band frequency-sweeping light produced to the data acquisition module transmitting fiber Bragg grating (FBG) demodulator and will
The optical signal launch of reception is to the fiber Bragg grating (FBG) demodulator；The fiber Bragg grating (FBG) demodulator is used to solve dim signal.
Wherein, the fiber Bragg grating strain sensor of the data acquisition module leads to the optical signal transceiver with demodulation module
Cross OPGW or OPPC connection.
Wherein, the data acquisition module further comprises that two stiffness factors are identical and known spring, a spring
Be installed in parallel with a fiber Bragg grating strain sensor on one adjustable length side of tripod, another spring and another
Fiber Bragg grating strain sensor is installed in parallel on another adjustable length side of tripod.
Wherein, the fiber Bragg grating strain sensor includes fiber grating displacement sensor, and the fiber grating displacement is passed
Sensor is used for temperature, the strain variation data for gathering power transmission line to be measured, and calculates the real-time displacement on the adjustable length side of tripod
Delta data.
Wherein, the data processing module from the optical signal after demodulation specifically for obtaining real-time power transmission line to be measured
Temperature and strain variation data, determine the instantaneous value of the centre wavelength of fiber Bragg grating strain sensor, according to the centre wavelength
The change in displacement for being worth to adjustable length side in real time, calculate the real-time length of side on tripod adjustable length side, and by remaining
String theorem calculates power transmission line inclination angle to be measured.
Preferably, the device also includes client modules, shown for electronic geographic, power network parameter is monitored, log query
And help.
The method that measurement of dip angle is carried out based on said apparatus, as shown in Fig. 2 this method includes：
S1. the temperature of power transmission line to be measured and the data of stress variation, the data are gathered in real time by data acquisition module
The instantaneous value of the centre wavelength of fiber Bragg grating strain sensor in acquisition module is determined according to the data gathered in real time；
S2. narrow-band frequency-sweeping light is launched to the data acquisition module by optical signal transceiver and demodulation module；
S3. the narrow-band frequency-sweeping light with the centre wavelength phase co-wavelength of fiber Bragg grating strain sensor is reflexed into optical signal to receive
Hair and demodulation module；
S4. the optical signal received optical signal transceiver and demodulation module carries out power detection, and by the optical signal solution
It is adjusted to the data signal of Wavelength-encoding；
S5. according to obtained data signal, temperature and stress variation data and the calculating three of power transmission line to be measured are therefrom obtained
The real-time displacement delta data on the adjustable length side of corner bracket, the length of data processing module intermediate cam frame is determined according to change in displacement
The length on variable side, power transmission line inclination angle to be measured is calculated with the cosine law.
Embodiment 1：
The present embodiment discloses a kind of transmission of electricity based on fiber grating sensing technology for being applied to measurement overhead line ice covering thickness
Line dip measuring device, the device includes：
Data acquisition module, temperature and strain variation data for gathering overhead transmission line to be measured in real time, the data
Acquisition module includes that two fiber Bragg grating strain sensors, two stiffness factors are identical and known spring and a tripod,
Three of the tripod while including regular length while and two adjustable length sides, on every adjustable length side
One fiber Bragg grating strain sensor is installed；One spring and a fiber Bragg grating strain sensor are installed in parallel in triangle
On one adjustable length side of frame, another spring is installed in parallel in tripod with another fiber Bragg grating strain sensor
On another adjustable length side；
In the present embodiment, as shown in figure 3, a sensor is fixed on overhead line, and it is parallel with it, it can synchronously sense frame
The strain of ceases to be busy；It is parallel with overhead line with the spring of the sensor parallel, it can synchronously deform upon, elongate or shorten；Insulator
Go here and there for supporting overhead line to make overhead line and shaft tower, it is ensured that circuit has reliable electrical insulation strength；It is real in Fig. 3 intermediate cam framves
Line is connection and the fix bar of tripod and insulator chain；The fix bar and sensor are spatially without common factor, by sensor
Block.
Optical signal transceiver and demodulation module, the optical signal transceiver include optical signal transceiver unit and optical fiber with demodulation module
Grating demodulation instrument, the optical signal transceiver unit is used to launch the narrow of the fiber Bragg grating (FBG) demodulator generation to data acquisition module
With sweep light and by the optical signal launch of reception to the fiber Bragg grating (FBG) demodulator；The fiber Bragg grating (FBG) demodulator is used to demodulate
Optical signal.
Data processing module, temperature and strain variation for obtaining overhead transmission line to be measured from the optical signal after demodulation
Data, and calculate overhead transmission line inclination angle to be measured；
Client modules, shown for electronic geographic, the monitoring of power network parameter, log query and help.
Wherein, the fiber Bragg grating strain sensor includes temperature-compensating grating and strain grating, the temperature-compensating light
The Temperature cross-over that grid are used to compensate strain grating is sensitive.
Wherein, the optical fiber grating sensing being arranged in two variable-length side structures of tripod of the data acquisition module
Device, is concatenated by OPGW optical or OPPC OPPC splice trays with optical fiber therein.The OPGW/
OPPC is that optical fiber is placed in ground wire/phase line of aerial high voltage power line, to constitute the fiber optic communication network on transmission line of electricity,
This structure type has ground wire/phase line and the dual-use function that communicates concurrently.
The method for carrying out measurement of dip angle using said apparatus includes：
S1. the temperature of power transmission line to be measured and the data of stress variation, the data are gathered in real time by data acquisition module
The instantaneous value of the centre wavelength of fiber Bragg grating strain sensor in acquisition module is determined according to the data gathered in real time；
S2. narrow-band frequency-sweeping light is launched to the data acquisition module by optical signal transceiver and demodulation module；
S3. the fiber Bragg grating strain sensor on two variable sides of length of data acquisition module intermediate cam shape structure, reflects
The spectrum matched somebody with somebody compared with wherein cardiac wave length is returned, the spectrum carries overhead transmission line real time temperature, the relevant information of strain variation；
S4. the optical signal received optical signal transceiver and demodulation module carries out power detection, and by the optical signal solution
It is adjusted to the data signal of Wavelength-encoding；
S5. according to obtained data signal, temperature and stress variation data and the calculating three of power transmission line to be measured are therefrom obtained
The real-time displacement delta data on the adjustable length side of corner bracket, the length of data processing module intermediate cam frame is determined according to change in displacement
The length on variable side, power transmission line inclination angle to be measured is calculated with the cosine law.
Step S5 is specifically included：Data signal enters after data processing module, can by the wavelength signals of carrying temperature information
Calculate the temperature of power line.Same group（Totally two groups）The side of the wavelength data that interior two fiber gratings are measured again by making the difference
Formula, to compensate sensor due to the error to the sensitive caused signal wavelength of strain and Temperature cross-over.Calculate real-time stress
Variable quantity, its value and spring（Known stiffness factor）The variable quantity of elastic force is identical, so can in the hope of spring stroke, obtain
The length on real-time three sides of tripod, real-time change of pitch angle can be tried to achieve by the cosine law.Overhead line state is determined, you can
To calculate the corresponding ice covering thickness value of power line.
The warning system of data processing module can give corresponding judgement and provide rudimentary alarm, middle rank according to ice covering thickness value
Alarm or advanced alarm, and will determine that result is transferred to client modules.In addition, the significant data of said process is all saved into
Database, to inquire about.
Embodiment 2：
The present embodiment and the difference of embodiment 1 are：Data acquisition module directly uses fiber grating displacement
Sensor.It can directly obtain the situation of change of displacement, and overhead line temperature, strain variation can be monitored simultaneously.Fiber grating position
Displacement sensor is laid on the side of two variable-lengths of triangular structure, as shown in figure 4, the parallel cloth of fiber grating displacement sensor
It is located on two variable sides of triangular structure, the 3rd side of triangular structure is fixed edge（Length is constant）.It is one of to pass
Sensor is parallel with overhead line, can synchronously sense the strain of overhead line（Or displacement）.The present embodiment solves process and the implementation at inclination angle
Example 1 is identical, is, according to acquisition Atria side data, using the cosine law, to try to achieve the value at required angle.
Although being described in conjunction with the accompanying embodiments of the present invention, those skilled in the art can not depart from this hair
Various modifications and variations are made in the case of bright spirit and scope, such modifications and variations are each fallen within by appended claims
Within limited range.
Claims (10)
1. the power transmission line dip measuring device based on fiber grating sensing technology, it is characterised in that the device includes：
Data acquisition module, temperature and strain variation data for gathering power transmission line to be measured in real time, the data acquisition module
Including two fiber Bragg grating strain sensors and a tripod, three of the tripod while including regular length while
And two adjustable length sides, a fiber Bragg grating strain sensor is installed on every adjustable length side；Wherein, one
The adjustable length side of bar and fiber Bragg grating strain sensor mounted thereto are parallel with the power transmission line to be measured, described one
The insulator chain of the power transmission line to be measured is fixed on the side of regular length by fix bar；
Optical signal transceiver and demodulation module, for the narrow-band frequency-sweeping light produced to data acquisition module launching fiber grating demodulation instrument
And by the optical signal demodulation of reception；
Data processing module, temperature and strain variation data for obtaining power transmission line to be measured from the optical signal after demodulation, and
Calculate power transmission line inclination angle to be measured.
2. device according to claim 1, it is characterised in that the fiber Bragg grating strain sensor includes temperature-compensating light
Grid and strain grating, the Temperature cross-over that the temperature-compensating grating is used to compensate strain grating are sensitive.
3. device according to claim 1, it is characterised in that the fiber grating strain sensor in the data acquisition module
The instantaneous value of the centre wavelength of device is determined according to the data gathered in real time.
4. device according to claim 1, it is characterised in that the optical signal transceiver is received with demodulation module including optical signal
Bill member and fiber Bragg grating (FBG) demodulator, the optical signal transceiver unit are used to launch the fiber grating solution to data acquisition module
Adjust narrow-band frequency-sweeping light that instrument is produced and by the optical signal launch of reception to the fiber Bragg grating (FBG) demodulator；The fiber grating solution
Instrument is adjusted to be used to solve dim signal.
5. device according to claim 1, it is characterised in that the fiber Bragg grating strain sensor of the data acquisition module
It is connected with the optical signal transceiver with demodulation module by OPGW or OPPC.
6. device according to claim 1, is further characterized in that, the data acquisition module further comprises two stiffness
Coefficient is identical and known spring, and a spring and a fiber Bragg grating strain sensor are installed in parallel in one length of tripod
On variable side, another spring is installed in parallel variable in another length of tripod with another fiber Bragg grating strain sensor
Side on.
7. device according to claim 1, it is characterised in that the fiber Bragg grating strain sensor includes fiber grating position
Displacement sensor, the fiber grating displacement sensor is used for temperature, the strain variation data for gathering power transmission line to be measured, and calculates three
The real-time displacement delta data on the adjustable length side of corner bracket.
8. the device according to claim 3 or 7, it is characterised in that the data processing module is specifically for after demodulation
Optical signal in obtain in real time power transmission line to be measured temperature and strain variation data, determine in fiber Bragg grating strain sensor
The instantaneous value of cardiac wave length, according to the change in displacement for being worth to adjustable length side in real time of the centre wavelength, calculates tripod
The real-time length of side on adjustable length side, and power transmission line inclination angle to be measured is calculated by the cosine law.
9. device according to claim 1, is further characterized in that, the device also includes client modules, for electronically
Reason display, the monitoring of power network parameter, log query and help.
10. the method for measurement of dip angle is carried out based on any one described device in claim 1-9, it is characterised in that this method
Including：
S1. the temperature of power transmission line to be measured and the data of stress variation, the data acquisition are gathered in real time by data acquisition module
The instantaneous value of the centre wavelength of fiber Bragg grating strain sensor in module is determined according to the data gathered in real time；
S2. narrow-band frequency-sweeping light is launched to the data acquisition module by optical signal transceiver and demodulation module；
S3. by the narrow-band frequency-sweeping light with the centre wavelength phase co-wavelength of fiber Bragg grating strain sensor reflex to optical signal transceiver with
Demodulation module；
S4. the optical signal received optical signal transceiver and demodulation module carries out power detection, and is by the optical signal demodulation
The data signal of Wavelength-encoding；
S5. according to obtained data signal, the temperature and stress variation data of power transmission line to be measured is therefrom obtained and tripod is calculated
The real-time displacement delta data on adjustable length side, determines that the length of data processing module intermediate cam frame is variable according to change in displacement
Side length, calculate power transmission line inclination angle to be measured with the cosine law.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075240.8A CN103900529B (en) | 2014-03-03 | 2014-03-03 | Power transmission line dip measuring device and its method based on fiber grating sensing technology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410075240.8A CN103900529B (en) | 2014-03-03 | 2014-03-03 | Power transmission line dip measuring device and its method based on fiber grating sensing technology |
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| CN103900529A CN103900529A (en) | 2014-07-02 |
| CN103900529B true CN103900529B (en) | 2017-11-07 |
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| CN112484665B (en) * | 2020-10-13 | 2022-11-22 | 深圳供电局有限公司 | Insulator deflection angle measuring method, device and system |
| CN112985479B (en) * | 2021-02-09 | 2022-07-08 | 山东省科学院海洋仪器仪表研究所 | Real-time health condition monitoring system and method for ocean buoy communication antenna |
| CN115615395B (en) * | 2022-11-18 | 2023-03-28 | 山东科技大学 | Fiber grating goaf overlying strata inclinometer and measurement method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US5633748A (en) * | 1996-03-05 | 1997-05-27 | The United States Of America As Represented By The Secretary Of The Navy | Fiber optic Bragg grating demodulator and sensor incorporating same |
| JP2004361285A (en) * | 2003-06-05 | 2004-12-24 | Hitachi Cable Ltd | Angle sensor, and pipe line measuring instrument using the same |
| CN101424522B (en) * | 2008-11-21 | 2010-12-08 | 合肥工业大学 | Optical fiber bragg grating FBG three-dimensional feeler |
| CN201653621U (en) * | 2009-12-30 | 2010-11-24 | 江西省电力公司 | Power transmission overhead ground wire ice coverage online monitoring device |
| CN103630078A (en) * | 2012-08-23 | 2014-03-12 | 北京邮电大学 | Overhead transmission line icing thickness detection apparatus and detection method |
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