CN109391030A - A kind of ultra-high-tension power transmission line is waved and system of condition monitoring - Google Patents
A kind of ultra-high-tension power transmission line is waved and system of condition monitoring Download PDFInfo
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Abstract
It is waved this application provides a kind of ultra-high-tension power transmission line and system of condition monitoring, a phase transmission line of electricity is OPPC optical cable suitable for three phase line, comprising: light processing equipment, base station equipment and remote monitoring center equipment；Wherein, light processing equipment includes laser emission element, circulator, photoelectric conversion unit and processing unit；Laser emission element accesses the first port of circulator, and the second port of circulator accesses OPPC optical cable, and the third port of circulator accesses photoelectric conversion unit, and photoelectric conversion unit connects processing unit；Processing unit connects base station equipment, and base station equipment connects remote monitoring center equipment；Light processing unit is used to obtain the vibration information of sampled point；Base station equipment is used to the vibration information of sampled point being forwarded to remote monitoring center equipment, analyzes the vibration of corresponding OPPC optical cable according to the vibration information of sampled point by remote monitoring center equipment and waves state.The application can realize OPPC optical cable transmission line galloping state and vibrational state while monitor.
Description
Technical field
The application belongs to ultra-high-tension power transmission line monitoring field more particularly to a kind of ultra-high-tension power transmission line is waved and vibrated online
Monitoring system.
Background technique
Currently, waving and vibrating initiation with the continuous development of electric system and the extensive construction of supertension line
Also increasingly frequently, intensity also obviously increases accident, and ultra-high-tension power transmission line, which is waved and vibrates to have become, threatens the important of line security
One of factor.
It waves and is usually monitored by acceleration transducer, sensor setting is waved on the transmission line, according to acceleration
Information is waved in angle value determination.Aeolian vibration is usually measured by foil gauge, and foil gauge is arranged on the transmission line, for according to resistance
Value, which changes, determines vibration information.It is limited by acceleration and foil gauge measuring principle, waving and vibrating for ultra-high-tension power transmission line cannot
It monitors simultaneously.
Summary of the invention
The application provides a kind of ultra-high-tension power transmission line and waves and system of condition monitoring, waves in the prior art for solving
The defect that dynamic and vibration information cannot monitor simultaneously.
In one embodiment of the application, ultra-high-tension power transmission line, which is waved, is suitable for three phase line with system of condition monitoring
In a phase transmission line of electricity be OPPC optical cable, comprising: light processing equipment, base station equipment and remote monitoring center equipment；Wherein, at light
Managing equipment includes laser emission element, circulator, photoelectric conversion unit and processing unit；
Laser emission element accesses the first port of circulator, and the second port of circulator accesses OPPC optical cable, circulator
Third port access photoelectric conversion unit, photoelectric conversion unit connect processing unit；Processing unit connects base station equipment, base station
Equipment connects remote monitoring center equipment；
Laser emission element is used to the light pulse of certain frequency and pulsewidth injecting OPPC optical cable, injection by circulator
The light pulse of OPPC optical cable generates rayleigh backscattering light, and rayleigh backscattering light is propagated through along the direction opposite with light pulse
Circulator enters photoelectric conversion unit；Photoelectric conversion unit is used to optical signal becoming electric signal；Processing unit is for adopting at a high speed
Sample electric signal, to the electric signal of sampled point carry out demodulation smoothing processing obtain sampled point vibration frequency and smoothed out vibration width
Value, the vibration frequency of combined sampling point and smooth rear vibration amplitude, sampling time, light processing device id obtain the vibration of sampled point
Information；
Base station equipment is used to the vibration information of sampled point being forwarded to remote monitoring center equipment, is set by remote monitoring center
It is standby that the vibration of corresponding OPPC optical cable is analyzed according to the vibration information of sampled point and waves state.
In the application further embodiment, one light processing equipment is set every preset distance, or light processing equipment is arranged
In substation；Base station equipment is set on shaft tower.
In the application further embodiment, light processing equipment further includes fibre optic interferometer, and the third end of circulator is arranged in
Between mouth and photoelectric conversion unit, for carrying out interference modulations to rayleigh backscattering light.
In the application further embodiment, laser emission element include sequentially connected laser emitter, optical modulator and
Optical power amplifier；The first port of optical power amplifier connection circulator；
For laser emitter for issuing laser, which generates the light of certain frequency and pulsewidth after optical modulator acts on
Pulse, the light pulse enter circulator after optical power amplifier.
In the application further embodiment, processing unit carries out demodulation smoothing process packet to the electric signal of sampled point
It includes:
The vibration frequency and vibration amplitude that the electric signal of sampled point is converted to sampled point are converted using HHT；
For any sampled point, sliding average is carried out to the vibration amplitude of multiple sampled points near the sampled point and is handled
To the smoothed out vibration amplitude of sampled point.
Further, sliding average processing is carried out by vibration amplitude of the following formula to sampled point:
Wherein, yiFor the smoothed out vibration amplitude of sampled point i, N is number of sampling points, xi-nFor the vibration of the i-th-n sampled points
Dynamic amplitude, hnFor the weight of the i-th-n sampled points.
In the application further embodiment, remote monitoring center equipment analyzes corresponding OPPC according to the vibration information of sampled point
It the vibration of optical cable and waves state procedure and includes:
The monitoring distance of sampled point is determined according to the frequency of light pulse and sampling time；
For the sampled point in the mT sampling time in predetermined monitoring distance, by the vibration amplitude of those sampled points respectively with
Amplitude thresholds compare, by the vibration frequency of those sampled points compared with vibration threshold；
If the vibration amplitude of those sampled points is greater than amplitude thresholds, the vibration frequency of those sampled points is less than vibration threshold,
It then determines that the corresponding OPPC optical cable of those sampled points produces to wave；
If the vibration amplitude of those sampled points is less than amplitude thresholds, the vibration frequency of those sampled points is greater than vibration threshold,
Then determine that the corresponding OPPC optical cable of those sampled points produces vibration.
In the application further embodiment, remote monitoring center is also used to: collecting all kinds of transmission line malfunctions for a period of time
Frequency waveform；
Extract the feature of all kinds of transmission line malfunction frequency waveforms, wherein the feature packet of transmission line malfunction frequency waveform
Include wave head amplitude, wave head rising edge change rate, wave head failing edge change rate, wave rear failing edge change rate, traveling wave amplitude range；
Property data base is established according to the feature of all kinds of failure-frequency waveforms, so that subsequent analyze according to property data base has
Body line fault.
In the application further embodiment, it further includes power supply system that ultra-high-tension power transmission line, which is waved with system of condition monitoring,
System connects base station equipment, for powering for base station equipment；
Wherein, power supply system includes battery, wind power plant and steam-electric power plant, wind power plant and the sun
Energy generating equipment connects battery, for charging for battery.
It is waved by ultra-high-tension power transmission line provided by the present application and is suitable for OPPC optical cable, sensing with system of condition monitoring
Distance has the characteristics of positioning accuracy is high, strong real-time up to 30km；Meanwhile single OPPC can be realized by light processing equipment
0.1~5Hz's of optical cable transmission line of electricity ultralow frequency waves state, several hundred hertz of conductor vibration state while monitoring, to mitigate
Transmission line of electricity burden and maintenance cost.
Detailed description of the invention
In order to more clearly explain the technical solutions in the embodiments of the present application, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are only some examples of the present application, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is that the ultra-high-tension power transmission line of one embodiment of the application waves the structure chart with system of condition monitoring；
Fig. 2 is that the ultra-high-tension power transmission line of another embodiment of the application waves the structure chart with system of condition monitoring；
Fig. 3 is the flow chart of the demodulation smoothing process of one embodiment of the application；
Fig. 4 is the corresponding OPPC optic cable vibration of analysis of one embodiment of the application and the flow chart for waving state；
Fig. 5 is the flow chart of the Mishap Database establishment process of one embodiment of the application.
Specific embodiment
In order to keep technical characterstic and the effect of the application more obvious, the technical solution of the application is done with reference to the accompanying drawing
It further illustrates, the specific example that the application can also have other different is illustrated or implements, anyone skilled in the art
The equivalents done within the scope of the claims belong to the protection category of the application.
In the description of this specification, reference term " embodiment ", " specific embodiment ", etc. description mean to combine
The embodiment or example particular features, structures, materials, or characteristics described be contained in the application at least one embodiment or
In example.In the present specification, schematic expression of the above terms may not refer to the same embodiment or example.And
And particular features, structures, materials, or characteristics described can be in any one or more of the embodiments or examples with suitable
Mode combine.The step of involved in each embodiment, sequentially is used to schematically illustrate the implementation of the application, sequence of steps therein
It is not construed as limiting, can appropriately adjust as needed.
As shown in FIG. 1, FIG. 1 is the ultra-high-tension power transmission lines of the embodiment of the present application to wave the structure with system of condition monitoring
Figure.The present embodiment phase transmission line of electricity suitable for three phase line is OPPC optical cable, and for distance sensing up to 30km, it is fixed to have
The characteristics of position precision is high, strong real-time.Meanwhile single OPPC optical cable transmission line of electricity ultralow frequency can be realized by light processing equipment
0.1~5Hz's waves state, several hundred hertz of conductor vibration state while monitoring, to mitigate transmission line of electricity burden and maintenance
Cost.
Specifically, it includes: light processing equipment 101, base station equipment that ultra-high-tension power transmission line, which is waved with system of condition monitoring,
102 and remote monitoring center equipment 103；Wherein, light processing equipment 101 includes laser emission element 201, circulator 202, photoelectricity
Converting unit 203 and processing unit 204.
Laser emission element 201 accesses the first port of circulator 202, and the second port of circulator accesses OPPC optical cable,
The third port of circulator accesses photoelectric conversion unit 203, and photoelectric conversion unit 203 connects processing unit 204；Processing unit
204 connection base station equipments 102, base station equipment 102 connect remote monitoring center equipment 103.
Laser emission element 201 is for by the light pulse of certain frequency and pulsewidth, (frequency of light pulse can be by monitor OPPC
Cable length determines that pulsewidth is determined by spatial resolution) OPPC optical cable is injected by circulator 202, inject the light of OPPC optical cable
Pulse generates rayleigh backscattering light, rayleigh backscattering light along the direction opposite with light pulse propagate through circulator 202 into
Enter photoelectric conversion unit 203, rayleigh backscattering light of the circulator 202 for light pulse and the return of isolation input, in difference
At the moment, the rayleigh backscattering light that OPPC optical cable returns is scattered by the OPPC optical cable of different location；Photoelectric conversion unit 203
For optical signal to be become electric signal；Processing unit 204 samples electric signal for high speed (> 100MS/s), to the electricity of sampled point
Signal carry out demodulation smoothing processing obtain sampled point vibration frequency and smoothed out vibration amplitude, combined sampling point vibration frequency
Rate and smooth vibration amplitude, sampling time, light processing device id afterwards obtain the vibration information of sampled point.
Base station equipment 102 is used to the vibration information of sampled point being forwarded to remote monitoring center equipment 103, by remotely monitoring
Central apparatus 103 analyzes the vibration of corresponding OPPC optical cable according to the vibration information of sampled point and waves information.
Specifically, processing unit connects base station equipment by wired or wireless mode, and equally, base station equipment is also logical
It crosses wired or wireless mode and connects remote monitoring center equipment, the application does not limit this.
Sampling time can be as accurate as century second, account for 4 bytes；Smoothed out vibration amplitude unit is μ ε, is accurate to a position,
Account for 2 bytes；Vibration frequency unit is Hz, is accurate to after decimal point 2, accounts for 4 bytes；Light processing device id can for by number,
It is encoded made of monogram, the ID of such as 17 codings accounts for 17 bytes.When installing light processing equipment, by light processing device id and institute
Place geographical location is bound together, and can determine OPPC fiber optic cable monitor range according to light processing device id.
As shown in Fig. 2, in the application further embodiment, in order to solve the problems, such as that base station power supply is difficult, ultra-high-tension power transmission line
Waving with system of condition monitoring further includes power supply system 104, connects base station equipment 102, for powering for base station equipment.Its
In, power supply system 104 includes battery, wind power plant and steam-electric power plant, wind power plant and solar power generation
Equipment connects battery, for charging for battery.
In one specific embodiment of the application, in order to guarantee to cover measured zone comprehensively, it is arranged at a light every preset distance
Equipment is managed, or light processing equipment is arranged in substation.Base station equipment is set on shaft tower.
As shown in Fig. 2, light processing equipment 101 further includes fibre optic interferometer 205 in one embodiment of the application, it is arranged in ring
Between the third port and photoelectric conversion unit 203 of shape device 202, for carrying out interference modulations to rayleigh backscattering light.By
The modulated rayleigh backscattering light of fibre optic interferometer 205 can change to obtain what outer bound pair phase had an impact by striations
Variable quantity.
Further, laser emission element 201 includes sequentially connected laser emitter 301, optical modulator 302 and light function
Rate amplifier 303；The first port of the connection circulator of optical power amplifier 303；
For laser emitter 301 for issuing laser, which generates certain frequency and arteries and veins after the effect of optical modulator 302
Wide light pulse, the light pulse enter circulator 202 after optical power amplifier 303.
As shown in figure 3, processing unit 204 carries out solution leveling to the electric signal of sampled point in the application further embodiment
Sliding treatment process includes:
Step 401, the vibration frequency and vibration amplitude that the electric signal of sampled point is converted to sampled point are converted using HHT；
Step 402, for any sampled point, it is flat that sliding is carried out to the vibration amplitude of multiple sampled points near the sampled point
Processing obtains the smoothed out vibration amplitude of sampled point.
The present embodiment can make remote monitoring center equipment according to smoothed out vibration amplitude quickly, it is intuitive determine wave,
Vibration Condition.
Further, sliding average processing is carried out by vibration amplitude of the following formula to sampled point in above-mentioned steps 402,
Sliding average processing repairs the sampled point vibration amplitude according to the vibration amplitude of N number of sampled point near a certain sampled point
Just, so that vibration amplitude enchashment is smooth enough, noise reduction purpose is realized:
Wherein, yiFor the smoothed out vibration amplitude of sampled point i, N is number of sampling points, xi-nFor the vibration of the i-th-n sampled points
Dynamic amplitude, hnFor the weight of the i-th-n sampled points.
Specifically, depending on the weight of each sampled point can influence size according to surrounding sample points, the application weighs sampled point
The specific method of determination of weight is without limitation.If the weight of each sampled point is identical, above-mentioned formula (2) can pass through following formula (3)
It indicates, above-mentioned formula (1) can be indicated by following formula (4):
As shown in figure 4, remote monitoring center equipment 103 is according to the vibration information of sampled point point in one embodiment of the application
Phase separation answers the vibration of OPPC optical cable and waves state procedure
Step 501, the monitoring distance of sampled point is determined according to the frequency of light pulse and sampling time；
Step 502, for the sampled point in the mT sampling time in predetermined monitoring distance, by the vibration width of those sampled points
Value is respectively compared with amplitude thresholds (generally taking 1m), by the vibration frequency of those sampled points and vibration threshold (generally taking 300Hz)
Compare；
If the vibration amplitude of those sampled points is greater than amplitude thresholds, the vibration frequency of those sampled points is less than vibration threshold,
It then determines that the corresponding OPPC optical cable of those sampled points produces to wave；
If the vibration amplitude of those sampled points is less than amplitude thresholds, the vibration frequency of those sampled points is greater than vibration threshold,
Then determine that the corresponding OPPC optical cable of those sampled points produces vibration.
As shown in figure 5, in one embodiment of the application, for the ease of subsequent analysis line fault type, remote monitoring center
It is also used to establish Mishap Database, specifically, the establishment process of Mishap Database includes:
Step 601: collecting the frequency waveform of all kinds of transmission line malfunctions for a period of time.
Step 602: extracting the feature of all kinds of transmission line malfunction frequency waveforms, wherein transmission line malfunction frequency waveform
Feature include wave head amplitude, wave head rising edge change rate, wave head failing edge change rate, wave rear failing edge change rate, traveling wave width
It is worth range.For example, for because of failure caused by branch or foreign matter hanging wire contact wire, have the variation of wave head failing edge slowly, wave
The characteristics of head rising edge is relatively steep, traveling wave amplitude smaller (such as less than 100A)；For because mountain fire keep air heat free and flue dust etc. because
Discharge fault caused by element, with wave head rising edge, slow, wave rear failing edge is equally slow, traveling wave amplitude small (being less than 50A)
Feature；Cause insulation performance to reduce insulator surface icing and arcing fault occurs, larger, wave head rises with traveling wave amplitude
Along steeper feature；For the failure that crane causes safe distance deficiency to occur close to conducting wire operation, there is wave head rising edge very
Suddenly, the characteristics of wave rear failing edge is steepest, traveling wave amplitude larger (may be up to kilo-ampere grade) in non-lightning fault.
Step 603: property data base is established according to the feature of all kinds of failure-frequency waveforms.
It is waved by ultra-high-tension power transmission line provided by the present application and is suitable for OPPC optical cable, sensing with system of condition monitoring
Distance has the characteristics of positioning accuracy is high, strong real-time up to 30km；Meanwhile single OPPC can be realized by light processing equipment
0.1~5Hz's of optical cable transmission line of electricity ultralow frequency waves state, several hundred hertz of conductor vibration state while monitoring, to mitigate
Transmission line of electricity burden and maintenance cost.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is merely to illustrate the technical solution of the application, any those of ordinary skill in the art can without prejudice to
Spirit herein and under the scope of, modifications and changes are made to the above embodiments.Therefore, the rights protection scope of the application should regard
Subject to scope of the claims.
Claims (9)
1. a kind of ultra-high-tension power transmission line is waved and system of condition monitoring, which is characterized in that suitable for three phase line
One phase transmission line of electricity is OPPC optical cable, comprising: light processing equipment, base station equipment and remote monitoring center equipment；Wherein, light processing
Equipment includes laser emission element, circulator, photoelectric conversion unit and processing unit；
Laser emission element accesses the first port of circulator, and the second port of circulator accesses OPPC optical cable, and the of circulator
Photoelectric conversion unit is accessed in three ports, and photoelectric conversion unit connects processing unit；Processing unit connects base station equipment, base station equipment
Connect remote monitoring center equipment；
Laser emission element is used to the light pulse of certain frequency and pulsewidth injecting OPPC optical cable by circulator, injects OPPC light
The light pulse of cable generates rayleigh backscattering light, and rayleigh backscattering light propagates through circulator along the direction opposite with light pulse
Into photoelectric conversion unit；Photoelectric conversion unit is used to optical signal becoming electric signal；Processing unit is used for high-speed sampling telecommunications
Number, to the electric signal of sampled point carry out demodulation smoothing processing obtain sampled point vibration frequency and smoothed out vibration amplitude, group
It closes the vibration frequency of sampled point and smoothly rear vibration amplitude, sampling time, light processing device id obtains the vibration information of sampled point；
Base station equipment is used to the vibration information of sampled point being forwarded to remote monitoring center equipment, by remote monitoring center equipment root
The vibration of corresponding OPPC optical cable is analyzed according to the vibration information of sampled point and waves state.
2. the system as claimed in claim 1, which is characterized in that a light processing equipment is arranged every preset distance, or will be at light
Equipment is managed to be arranged in substation；Base station equipment is set on shaft tower.
3. the system as claimed in claim 1, which is characterized in that light processing equipment further includes fibre optic interferometer, is arranged in annular
Between the third port and photoelectric conversion unit of device, for carrying out interference modulations to rayleigh backscattering light.
4. the system as claimed in claim 1, which is characterized in that laser emission element include sequentially connected laser emitter,
Optical modulator and optical power amplifier；The first port of optical power amplifier connection circulator；
For laser emitter for issuing laser, which generates the light arteries and veins of certain frequency and pulsewidth after optical modulator acts on
Punching, the light pulse enter circulator after optical power amplifier.
5. the system as claimed in claim 1, which is characterized in that processing unit carries out demodulating smooth place to the electric signal of sampled point
Reason process includes:
The vibration frequency and vibration amplitude that the electric signal of sampled point is converted to sampled point are converted using HHT；
For any sampled point, the vibration amplitude progress sliding average of multiple sampled points near the sampled point is handled and is adopted
The smoothed out vibration amplitude of sampling point.
6. system as claimed in claim 5, which is characterized in that slided by vibration amplitude of the following formula to sampled point
Average treatment:
Wherein, yiFor the smoothed out vibration amplitude of sampled point i, N is number of sampling points, xi-nFor the vibration width of the i-th-n sampled points
Value, hnFor the weight of the i-th-n sampled points.
7. the system as claimed in claim 1, which is characterized in that remote monitoring center equipment is according to the vibration information of sampled point point
Phase separation answers the vibration of OPPC optical cable and waves state procedure
The monitoring distance of sampled point is determined according to the frequency of light pulse and sampling time；
For the sampled point in the mT sampling time in predetermined monitoring distance, by the vibration amplitude of those sampled points respectively with amplitude
Threshold value comparison, by the vibration frequency of those sampled points compared with vibration threshold；
If the vibration amplitude of those sampled points is greater than amplitude thresholds, the vibration frequency of those sampled points is less than vibration threshold, really
The fixed corresponding OPPC optical cable of those sampled points, which produces, to be waved；
If the vibration amplitude of those sampled points is less than amplitude thresholds, the vibration frequency of those sampled points is greater than vibration threshold, really
The fixed corresponding OPPC optical cable of those sampled points produces vibration.
8. the system as claimed in claim 1, which is characterized in that remote monitoring center is also used to:
Collect the frequency waveform of all kinds of transmission line malfunctions for a period of time；
Extract the feature of all kinds of transmission line malfunction frequency waveforms, wherein the feature of transmission line malfunction frequency waveform includes wave
Head amplitude, wave head rising edge change rate, wave head failing edge change rate, wave rear failing edge change rate, traveling wave amplitude range；
Property data base is established according to the feature of all kinds of failure-frequency waveforms, specific line is analyzed according to property data base so as to subsequent
Road failure.
9. the system as claimed in claim 1, which is characterized in that further include power supply system, connect base station equipment, for being base station
Equipment power supply；
Wherein, power supply system includes battery, wind power plant and steam-electric power plant, and wind power plant and solar energy are sent out
Electric equipment connects battery, for charging for battery.
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| CN201710684352.7A CN109391030B (en) | 2017-08-11 | 2017-08-11 | On-line monitoring system for galloping and vibration of high-voltage transmission line |
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| CN201710684352.7A CN109391030B (en) | 2017-08-11 | 2017-08-11 | On-line monitoring system for galloping and vibration of high-voltage transmission line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115064982A (en) * | 2022-05-12 | 2022-09-16 | 北京融通智慧科技集团有限公司 | Intelligent inspection system and method for ultra-high voltage transmission line and related equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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