CN107179175A - A kind of transmission line of electricity OPGW cable broken core accurate positioning methods - Google Patents
A kind of transmission line of electricity OPGW cable broken core accurate positioning methods Download PDFInfo
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- CN107179175A CN107179175A CN201710349430.8A CN201710349430A CN107179175A CN 107179175 A CN107179175 A CN 107179175A CN 201710349430 A CN201710349430 A CN 201710349430A CN 107179175 A CN107179175 A CN 107179175A
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- transmission line
- opgw
- accurate positioning
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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
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/31—Testing of optical devices, constituted by fibre optics or optical waveguides with a light emitter and a light receiver being disposed at the same side of a fibre or waveguide end-face, e.g. reflectometers
- G01M11/3109—Reflectometers detecting the back-scattered light in the time-domain, e.g. OTDR
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- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Locating Faults (AREA)
Abstract
The invention discloses a kind of transmission line of electricity OPGW cable broken core accurate positioning methods, it includes：Step 1, using Brillouin scattering optical time domain reflection monitoring technology equipment in transformer substation communication computer room measurement collection optical fiber composite overhead（OPGW）The BOTDR original signal datas of a wherein core；Step 2, gained original signal data taken N groups carry out cumulative average；Step 3, the primary signal mean data for obtaining step 2 carry out high-pass filtering and Brillouin shift spectrogram is drawn；Step 4, the frequency displacement spectrogram obtained according to step 3 calibrate optical patchcord, shaft tower, splice tray position, long and circuit overall length more than splice tray optical cable；The calibration result obtained when step 5, disconnected core failure according to measured BOTDR signal datas and step 4 is contrasted, you can localization of faults position；Solve prior art optical fiber measurement equipments measurement and there is blind area, the technical problem such as measurement result accuracy is poor.
Description
Technical field
The invention belongs to cable broken core detection technique, more particularly to a kind of transmission line of electricity OPGW cable broken cores side of being accurately positioned
Method.
Background technology
Recently as the Large scale construction of China's Fiber-optic Communication In Electric Power System network, up to ten thousand kilometers of electricity has been formed so far
Power optical fiber telecommunications line, important leverage is provided for the reliability service of power system.OPGW（Optical
Fiber Composite Overhead Ground Wire, OPGW）Had concurrently commonly as communication of power system special optical cable
Line lightning protection and the dual-use function of fiber optic communication, using extremely widespread in electric transmission line erection.The country in terms of running situation
The outer OPGW that occurs is caused fibre core to be damaged by disasters such as external force or thunderbolts, influences the case of fiber optic cable communications transmission performance.Transmission of electricity
Safe operation of the circuit OPGW cable broken cores failure to power communication system brings great threat, therefore OPGW cable broken cores is fast
Speed, be accurately positioned with important Research Significance.
With developing rapidly for light communication, Distributed Optical Fiber Sensing Techniques are increasingly becoming the focus of research, with huge
Application potential.Current most widely used optical fiber measurement equipments are optical time domain reflectometer i.e. OTDR testers, and it is according to light
The information such as backward Fresnel reflection principle measurement optical fiber attenuation, splicing loss, fiber failure point, but its to have the disadvantage that measurement is present blind
Area, the technical problem such as measurement result accuracy is poor.
The content of the invention：
The technical problem to be solved in the present invention：A kind of transmission line of electricity OPGW cable broken core accurate positioning methods are provided, it is existing to solve
There are technology optical fiber measurement equipments to use optical time domain reflectometer i.e. OTDR testers, it is surveyed according to the backward Fresnel reflection principle of light
Measure optical fiber attenuation, splicing loss, the information such as fiber failure point, but it has the disadvantage that measurement has a blind area, measurement result accuracy compared with
The technical problems such as difference.
Technical solution of the present invention：
A kind of transmission line of electricity OPGW cable broken core accurate positioning methods, it includes：
Step 1, using Brillouin scattering optical time domain reflection monitoring technology equipment transformer substation communication computer room measurement collection optical fiber answer
Close aerial earth wire（OPGW）The BOTDR original signal datas of a wherein core；
Step 2, gained original signal data taken N groups carry out cumulative average；
Step 3, the primary signal mean data for obtaining step 2 carry out high-pass filtering and Brillouin shift spectrogram is drawn；
Step 4, the frequency displacement spectrogram obtained according to step 3 calibrate optical patchcord, shaft tower, splice tray position, more than splice tray optical cable
Long and circuit overall length；
The calibration result obtained when step 5, disconnected core failure according to measured BOTDR signal datas and step 4 is contrasted, i.e.,
It can determine that position of failure point.
The BOTDR original signal datas decompose and are stored as spatiotemporal two-dimensional array amount；What is stored is frequency
Signal；
Original signal data described in step 2 takes the progress of N groups is cumulative to average, and is to do tired in time to different spatial point
Meter is averaged, and N values are more than 10.
Frequency displacement spectrogram described in step 3 is stair-stepping curve.
Calibration result described in step 4 is OPGW lightguide cable links normally operation and the circuit obtained during without stranded, disconnected core failure
The BOTDR data at stable moment, and according to frequency spectrum icon make optical patchcord, shaft tower, splice tray position, every section of splice tray it
Between cable length and optical cable terminal position.
The data of demarcation take fine night 20:00~6:00 data carry out accumulative average.
Beneficial effects of the present invention：
The present invention proposes a kind of transmission line of electricity OPGW cable broken core accurate positioning methods, and this method is using in optical time domain dorsad cloth
Deep scatter distributions formula optical fiber sensing system（BOTDR）In transformer station OPGW one end measurement data, this is calibrated according to the data obtained
The positions such as bar circuit optical fiber wire jumper, shaft tower, splice tray and OPGW optical cable overall lengths etc., when disconnected core failure occurs for OPGW optical cables, root
Disconnected core position can be accurately positioned rapidly according to surveyed data and calibration result contrast.This method is positioned more compared to OTDR testers
Accurately, non-blind area, the advantages of range resolution ratio is high；Facility can be provided for communication rush repair；Prior art fiber laser arrays are solved to set
Standby is OTDR testers using optical time domain reflectometer, and it measures optical fiber attenuation, joint according to the backward Fresnel reflection principle of light
Information such as loss, fiber failure point, but it has the disadvantage that measurement has a blind area, the technical problem such as measurement result accuracy is poor.
Brief description of the drawings：
Fig. 1 is OPGW cable broken core accurate positioning method schematic flow sheets；
The calibration result schematic diagram of night data when Fig. 2 is OPGW normal；
When Fig. 3 is OPGW normal daytime data calibration result schematic diagram；
Fig. 4 is the disconnected measurement result schematic diagrames of core failure embodiment 1 of OPGW；
Fig. 5 is the disconnected measurement result schematic diagrames of core failure embodiment 2 of OPGW.
Embodiment：
A kind of transmission line of electricity OPGW cable broken core accurate positioning methods（See Fig. 1）, using optical time domain, dorsad Brillouin scattering is distributed
Formula fibre optical sensor（BOTDR）Transmission line of electricity OPGW internal optical fibers are monitored and data acquisition, then data sieved
Choosing, filtering, frequency abstraction, calibrate this circuit it is normal when the position such as optical patchcord, shaft tower, splice tray and OPGW optical cables it is total
It is long etc., measurement result is contrasted with calibration result when disconnected core failure occurs for OPGW optical cables, you can rapid, accurately positioning
Go out breakpoint location.Specifically include following steps（See Fig. 1）：
Step 1, using Brillouin scattering optical time domain reflection monitoring technology equipment transformer substation communication computer room measurement collection optical fiber answer
Close aerial earth wire（OPGW）The BOTDR original signal datas of a wherein core；
Step 2, gained original signal data taken N groups carry out cumulative average；
Step 3, the primary signal mean data for obtaining step 2 carry out high-pass filtering and Brillouin shift spectrogram is drawn；
Step 4, the frequency displacement spectrogram obtained according to step 3 calibrate optical patchcord, shaft tower, splice tray position, more than splice tray optical cable
Long and circuit overall length；
The calibration result obtained when step 5, disconnected core failure according to measured BOTDR signal datas and step 4 is contrasted, i.e.,
It can determine that position of failure point.
The BOTDR original signal datas decompose and are stored as spatiotemporal two-dimensional array amount；It can reflect a certain
The variable condition of the signal condition or the same space location point of time point different spatial in time, data are in BOTDR skills
Art device interior is by processing, and storage is frequency signal；
Original signal data described in step 2 takes the progress of N groups is cumulative to average, and is to do tired in time to different spatial point
Meter is averaged, and N values are more than 10；Purpose is disturbed to eliminate the destabilizing factors such as noise.
Brillouin shift spectrogram is obtained after high-pass filtering described in step 3, and frequency displacement spectrogram is stair-stepping curve.
Calibration result described in step 4 is OPGW lightguide cable links normally operation and the circuit obtained during without stranded, disconnected core failure
The BOTDR data at stable moment, and according to frequency spectrum icon make optical patchcord, shaft tower, splice tray position, every section of splice tray it
Between cable length and optical cable terminal position.
One piece of data ripple of the measurement point to disconnected core point when optical cable occurs to survey data waveform and normal circuit after disconnected core failure
Shape is similar, and disconnected core failure hair can be clearly accurately positioned by carrying out contrast with calibration result according to the similitude of waveform and measurement length
Life is in which section splice tray, which grade shaft tower and which position.
The data of demarcation take fine night 20:00~6:00 data carry out accumulative average.
The primary signal after the processing at one section of environment relatively stable moment is screened with reference to meteorological data to carry out adding up to average,
Night 20 October 12 is chosen in the case:Morning 6 00 to October 13:00, which amounts to 200 groups of data, carries out adding up to average, and
Frequency displacement spectrogram is drawn, as shown in Figure 2.It is because nocturnal temperature is relatively stable, in cloth that night data, which are chosen, as calibration result
Deep frequency displacement curve fluctuation is small, and the data obtained spectrogram more smooth, splice tray position becomes apparent from；The data on the daytime such as institute of accompanying drawing 3
Show, it can be seen that the data on daytime are substantially not so good as the data stabilization at night compared with accompanying drawing 2.Choose N groups（This case N takes 200）
It is to eliminate the interference of the accidentalia such as noise, become apparent from calibration result spectrogram distinguishable to carry out accumulative average.
Spectrogram situation and electric power line pole tower information parameter that the night data chosen according to OPGW when normal are drawn, mark
Fiber lengths and optical fiber are last between shaft tower position, every section of splice tray where making optical patchcord, splice tray position, splice tray
End position.Institute's light-metering fibre overall length 51.842km in this case, shaft tower where splice tray is respectively：1# towers, 10# towers, 23# towers, 33#
Fiber lengths are respectively between tower, 56# towers, 64# towers, 76# towers, 98# towers, 108# towers, every section of splice tray：6.44km、
7.956km、3.07km、9.36km、4.48km、4.84km、10.29km、4.46km。
2 cable broken core failures occur for this circuit, and accompanying drawing 4 is the disconnected measurement result figures of core fault case 1 of OPGW, according to survey
It is 14.97km to measure the disconnected core fault distance of result measuring and calculating, and the calibration result of control reference accompanying drawing 2 can quickly position disconnected core position
For the fiber optic closure position on the 23# shaft towers of L2 ends.Accompanying drawing 5 is the disconnected measurement result figures of core fault case 2 of OPGW, according to measurement
As a result the core fault distance that breaks is calculated for 6.994km, the calibration result of control reference accompanying drawing 2, can quickly position disconnected core position is
Fiber optic closure position on the 10# shaft towers of L1 ends.
Claims (6)
1. a kind of transmission line of electricity OPGW cable broken core accurate positioning methods, it includes：
Step 1, using Brillouin scattering optical time domain reflection monitoring technology equipment transformer substation communication computer room measurement collection optical fiber answer
Close aerial earth wire（OPGW）The BOTDR original signal datas of a wherein core；
Step 2, gained original signal data taken N groups carry out cumulative average；
Step 3, the primary signal mean data for obtaining step 2 carry out high-pass filtering and Brillouin shift spectrogram is drawn；
Step 4, the frequency displacement spectrogram obtained according to step 3 calibrate optical patchcord, shaft tower, splice tray position, more than splice tray optical cable
Long and circuit overall length；
The calibration result obtained when step 5, disconnected core failure according to measured BOTDR signal datas and step 4 is contrasted, i.e.,
It can determine that position of failure point.
2. a kind of transmission line of electricity OPGW cable broken core accurate positioning methods according to claim 1, it is characterised in that：It is described
BOTDR original signal datas decompose and are stored as spatiotemporal two-dimensional array amount；What is stored is frequency signal.
3. a kind of transmission line of electricity OPGW cable broken core accurate positioning methods according to claim 1, it is characterised in that：Step
Original signal data described in 2 takes the progress of N groups is cumulative to average, and is that different spatial point is done in time to add up to ask equal
Value, N values are more than 10.
4. a kind of transmission line of electricity OPGW cable broken core accurate positioning methods according to claim 1, it is characterised in that：Step
Frequency displacement spectrogram described in 3 is stair-stepping curve.
5. a kind of transmission line of electricity OPGW cable broken core accurate positioning methods according to claim 1, it is characterised in that：Step
Calibration result described in 4 is OPGW lightguide cable links normally operation and the circuit stable moment obtained during without stranded, disconnected core failure
BOTDR data, and cable length between optical patchcord, shaft tower, splice tray position, every section of splice tray is made according to frequency spectrum icon
And optical cable terminal position.
6. a kind of transmission line of electricity OPGW cable broken core accurate positioning methods according to claim 1, it is characterised in that：Demarcation
Data take fine night 20:00~6:00 data carry out accumulative average.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927524A (en) * | 2019-12-03 | 2020-03-27 | 董永康 | OPGW optical cable core breaking reason analysis and accurate positioning method based on BOTDR technology |
| CN111510205A (en) * | 2020-04-21 | 2020-08-07 | 北京邮电大学 | Optical cable fault positioning method, device and equipment based on deep learning |
| CN111765960A (en) * | 2020-07-23 | 2020-10-13 | 国网山西省电力公司太原供电公司 | Method for extracting seismic signals of OPGW (optical fiber composite overhead ground wire) optical cable based on distributed optical fiber sensing |
| CN112887017A (en) * | 2021-01-21 | 2021-06-01 | 国家电网有限公司 | Positioning method and positioning system for optical cable connecting tower |
| CN112985773A (en) * | 2021-02-07 | 2021-06-18 | 中国电力科学研究院有限公司 | OPGW state detection method, system and storage medium based on BOTDR and OTDR |
| CN113691307A (en) * | 2021-08-12 | 2021-11-23 | 哈尔滨工业大学 | OPGW fault positioning and early warning method based on BOTDR and OTDR |
| CN114039656A (en) * | 2021-10-13 | 2022-02-11 | 哈尔滨工业大学 | OPGW fault positioning method and device based on BOTDR and OTDR |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07270480A (en) * | 1994-03-30 | 1995-10-20 | Fujitsu Ltd | Fault point locating device |
| CN1556384A (en) * | 2004-01-09 | 2004-12-22 | 南京大学 | Optical cable circuit failure point precision locating method |
| CN102735996A (en) * | 2012-07-17 | 2012-10-17 | 国家电网公司 | Exact locating method for fault points of submarine cable |
| CN103033285A (en) * | 2012-12-21 | 2013-04-10 | 华北电力大学（保定） | Simultaneous measurement method of temperature and strain of laid photoelectric composite cable |
| CN103557883A (en) * | 2013-09-09 | 2014-02-05 | 华北电力大学（保定） | Submarine photoelectric composite cable omni-directional monitoring and fault point accurate positioning method |
-
2017
- 2017-05-17 CN CN201710349430.8A patent/CN107179175A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07270480A (en) * | 1994-03-30 | 1995-10-20 | Fujitsu Ltd | Fault point locating device |
| CN1556384A (en) * | 2004-01-09 | 2004-12-22 | 南京大学 | Optical cable circuit failure point precision locating method |
| CN102735996A (en) * | 2012-07-17 | 2012-10-17 | 国家电网公司 | Exact locating method for fault points of submarine cable |
| CN103033285A (en) * | 2012-12-21 | 2013-04-10 | 华北电力大学（保定） | Simultaneous measurement method of temperature and strain of laid photoelectric composite cable |
| CN103557883A (en) * | 2013-09-09 | 2014-02-05 | 华北电力大学（保定） | Submarine photoelectric composite cable omni-directional monitoring and fault point accurate positioning method |
Non-Patent Citations (1)
| Title |
|---|
| 李永倩等: "基于BOTDR技术的OPGW在线监测研究", 《光通信研究》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110927524A (en) * | 2019-12-03 | 2020-03-27 | 董永康 | OPGW optical cable core breaking reason analysis and accurate positioning method based on BOTDR technology |
| CN111510205A (en) * | 2020-04-21 | 2020-08-07 | 北京邮电大学 | Optical cable fault positioning method, device and equipment based on deep learning |
| CN111510205B (en) * | 2020-04-21 | 2022-07-12 | 北京邮电大学 | Optical cable fault positioning method, device and equipment based on deep learning |
| CN111765960A (en) * | 2020-07-23 | 2020-10-13 | 国网山西省电力公司太原供电公司 | Method for extracting seismic signals of OPGW (optical fiber composite overhead ground wire) optical cable based on distributed optical fiber sensing |
| CN112887017A (en) * | 2021-01-21 | 2021-06-01 | 国家电网有限公司 | Positioning method and positioning system for optical cable connecting tower |
| CN112985773A (en) * | 2021-02-07 | 2021-06-18 | 中国电力科学研究院有限公司 | OPGW state detection method, system and storage medium based on BOTDR and OTDR |
| CN113691307A (en) * | 2021-08-12 | 2021-11-23 | 哈尔滨工业大学 | OPGW fault positioning and early warning method based on BOTDR and OTDR |
| CN113691307B (en) * | 2021-08-12 | 2022-10-11 | 哈尔滨工业大学 | OPGW fault positioning and early warning method based on BOTDR and OTDR |
| CN114039656A (en) * | 2021-10-13 | 2022-02-11 | 哈尔滨工业大学 | OPGW fault positioning method and device based on BOTDR and OTDR |
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