CN106289076B - Power transmission line sag intelligent image on-line monitoring system - Google Patents
Power transmission line sag intelligent image on-line monitoring system Download PDFInfo
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- CN106289076B CN106289076B CN201610661231.6A CN201610661231A CN106289076B CN 106289076 B CN106289076 B CN 106289076B CN 201610661231 A CN201610661231 A CN 201610661231A CN 106289076 B CN106289076 B CN 106289076B
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 90
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000007405 data analysis Methods 0.000 claims abstract description 24
- 238000005259 measurement Methods 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 12
- 238000009529 body temperature measurement Methods 0.000 claims abstract description 7
- 238000004891 communication Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims 2
- 230000001133 acceleration Effects 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 5
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 45
- 238000010276 construction Methods 0.000 description 9
- 230000007613 environmental effect Effects 0.000 description 8
- 238000004458 analytical method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
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- 230000007774 longterm Effects 0.000 description 3
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- 238000001514 detection method Methods 0.000 description 2
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- 238000011156 evaluation Methods 0.000 description 2
- 238000003702 image correction Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
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- 230000007547 defect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/03—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring coordinates of points
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
- G06T7/0006—Industrial image inspection using a design-rule based approach
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30181—Earth observation
- G06T2207/30184—Infrastructure
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Abstract
本发明提出了输电线路弧垂智能图像在线监测系统，属于智能电网领域。系统包括视频图像采集模块、水平垂直方向测量传感器、数据分析处理模块、环境温度测量模块。视频图像采集模块采集输电线路视频或图像信息送往数据分析处理模块，结合水平垂直方向测量传感器的数据矫正图像信息并进行输电线路弧垂实时计算，并根据环境温度测量模块的信息，计及温度和线路载流量对弧垂监测的影响，对输电线路弧垂异常变化进行预警。本发明降低了输电线路弧垂监测的成本和劳动强度，具有结构简单、安装维护方便、精度高等优点，并在考虑环境温度和载流量的前提下对弧垂进行监测，大大提高了预警和报警的准确性。
The invention proposes a transmission line sag intelligent image online monitoring system, which belongs to the field of smart grid. The system includes a video image acquisition module, a horizontal and vertical measurement sensor, a data analysis and processing module, and an ambient temperature measurement module. The video image acquisition module collects the video or image information of the transmission line and sends it to the data analysis and processing module, combines the data of the horizontal and vertical measurement sensors to correct the image information and calculates the sag of the transmission line in real time, and calculates the temperature according to the information of the ambient temperature measurement module. And the influence of line current carrying capacity on sag monitoring, early warning for abnormal changes of transmission line sag. The invention reduces the cost and labor intensity of the sag monitoring of the transmission line, has the advantages of simple structure, convenient installation and maintenance, high precision, and monitors the sag under the premise of considering the ambient temperature and current carrying capacity, which greatly improves the early warning and alarm. accuracy.
Description
Technical field
The invention proposes a kind of power transmission line sag intelligent image on-line monitoring systems, belong to smart grid field.
Background technique
Main indicator of the power transmission line sag as Transmission Line Design and operation is related to the normal fortune of transmission line of electricity
Row, arc sag is excessive not only to make route operation security risk occur, can also reduce the ability to transmit electricity of route, it is therefore desirable to arc sag
Accurately monitoring in real time is carried out, to ensure the safety of route operation.
At present in the power system, it is limited by measurement method, is often used manual measurement and on the transmission line setting biography
The mode of sensor detects power transmission line sag extremely.But the complex geographical environment as locating for transmission line of electricity, throughout the year cruelly
It is exposed to field, manual measurement and the mode that sensor is arranged on the transmission line are at high cost, and intelligence degree is low, is influenced by weather
Seriously, it is unable to satisfy the demand of smart grid development and management.
Temperature change is very big on the influence of the arc sag of transmission line of electricity, and conducting wire expands when temperature increases, and arc sag becomes larger, pair of conducting wire
Ground distance becomes smaller, and when the distance to the ground of conducting wire is less than safe distance, security risk, therefore power transmission line occurs in transmission line of electricity operation
Road transport row environmental history temperature change measures power transmission line sag extremely important.But it is detected in existing power transmission line sag
In, lack temperature factor on arc sag detection influence judge, be unable to satisfy power grid to power transmission line sag measurement and early warning and
The demand of alarm.
In recent years, also there are the technology being monitored by the way of video and image to power transmission line sag, Chinese patent
A kind of " measurement method of the arc sag of wire of power transmission line based on image procossing " (application number: 201110166098.4) only proposition pair
Collected transmission line of electricity image information is handled, and arc sag is calculated, and does not carry out the mark of shooting angle correction, scale
Fixed and early warning and the judgement of alarm etc.；It is especially the absence of according to both horizontally and vertically video or image of the information to acquisition
The process that information is effectively corrected can make angular error influence when acquiring video or image be difficult to eliminate, reduce arc sag prison
The accuracy of survey.
In conclusion existing main power transmission line sag detection mode is at high cost, installation maintenance is inconvenient, time and effort consuming,
Intelligence degree is low, and video image method does not correct video or image information, and precision is low, while not considering environmental factor
With the influence of current-carrying capacity, there are many defects, are unable to satisfy the requirement of modern intelligent power grid technology development.
Summary of the invention
For overcome the deficiencies in the prior art, the invention proposes power transmission line sag intelligent image on-line monitoring system,
The cost and labor intensity for reducing power transmission line sag monitoring, have many advantages, such as that structure is simple, convenient for installation and maintenance, when measurement
Video image correction has been carried out, has effectively increased precision, and carry out under the premise of considering environment temperature and current-carrying capacity to arc sag
Monitoring and evaluation substantially increases the accuracy of early warning and alarm.
The technical solution adopted by the present invention to solve the technical problems is:
The power transmission line sag intelligent image on-line monitoring system, including video image acquisition module (1), level are hung down
Histogram is to measurement sensor (2), Data Analysis Services module (3).Video image acquisition module (1) acquire transmission line of electricity video or
Image information is sent to Data Analysis Services module (3), and Data Analysis Services module (3) carries out the analysis processing of video image, is disappeared
Except such environmental effects, the geological information of transmission line of electricity is extracted and is formed, and determine the end-point data of connection two sides shaft tower.Data
The geological information for the transmission line of electricity that analysis and processing module (3) is extracted and formed includes transmission line of electricity transmission of electricity line profile and two sides
Shaft tower outer profile is calculated for subsequent transmission line of electricity extreme coordinates and arc sag size.
Horizontal vertical orientation measurement sensor (2) acquires horizontally or vertically information, is sent to Data Analysis Services module (3),
Data Analysis Services module (3) calculates both vertically and horizontally, merges with the information of the transmission line of electricity extracted,
The geological information for the transmission line of electricity that said extracted goes out and the end-point data of connection two sides shaft tower are corrected, is searched out in the picture accordingly
The real minimum point of transmission line of electricity, and calculate the minimum point arc sag size of transmission line of electricity.
When computing electric power line arc sag size, system is using the practical span between the shaft tower of transmission line of electricity both ends as mark
Ruler, and according to transmission line of electricity and the proportionate relationship of shaft tower span in the picture, the actual size of computing electric power line arc sag.Span
It can directly obtain, and span is easy to measure in image or video information, make by field survey or by line parameter circuit value
The measurement accuracy of arc sag actual size can be improved for scale.
In order to which the arc sag situation to transmission line of electricity carries out real-time monitoring and assessment, the system further includes that environment temperature is surveyed
It measures module (4), acquires ambient temperature information, be sent to Data Analysis Services module (3), Data Analysis Services module (3) utilizes ring
Border temperature and transmission line of electricity parameter itself, calculate the normal arc sag size under the environment temperature, and with above by video figure
As calculated arc sag size is compared, obtain that arc sag is poor, when the arc sag difference is more than setting limit value or certain time
The presentation of arc sag difference is gradually increased or when unexpected increase tendency, carries out early warning and alarm.
The setting limit value size can according to the condition that is capable of providing of scene using 2 kinds it is different by the way of determination, and
No matter and calculated using which kind of mode, due to introducing environment temperature variable, which is all real-time change, thus
The early warning of arc sag and alarm is enabled to better conform to field condition variation.
Mode 1: according to the route is calculated when current-carrying capacity is 0 and rated value, route generates heat under current environmental temperature
Caused arc sag fluctuation range determines.
Mode 2: it according to the practical current-carrying capacity of current transmission line of electricity, calculates offline in the current-carrying capacity and current environmental temperature
Road generates heat caused arc sag to determining.System measures the practical current-carrying capacity of current transmission line of electricity by increasing sensor, or
Person directly obtains from power grid real-time running data, and the practical current-carrying capacity of obtained transmission line of electricity will have certain nargin coefficient,
To prevent false alarm caused by transmission line of electricity operation fluctuation.
Horizontal vertical orientation measurement sensor (2) uses gravity accelerometer, gyroscope or level meter, real-time measurement
Transmission line of electricity vertically or horizontally information.When horizontal vertical orientation measurement sensor (2) acquire be horizontal information when,
Vertical information can be calculated in the picture, when horizontal vertical orientation measurement sensor (2) acquire be vertical information when, can be with
Horizontal information is calculated in the picture.
The system can be designed as portable construction (7), be carried by operations staff, collection in worksite transmission line of electricity arc
Arc sag data and early warning and alarming information are sent to central server (6) by vertical information.Due to system can to the image of acquisition or
Video information carries out angle correction, and being designed as portable construction will not be influenced by shooting angle when collection in worksite, has very high
Stability and veracity, and expand the scope of application of system.Portable construction can be designed as dedicated portable hand
Machine is held, has the smart phone of gravity accelerometer, even to facilitate operations staff to carry.
System is designed as stationary structure (8), long-term at the scene to be fixedly mounted, including communication module (5), by arc sag data
Operations staff or central server (6) are sent to early warning and alarming information.With a varied topography locating for some transmission lines of electricity, personnel are not easy
It reaches, is installed using stationary structure, the risk and cost of operations staff's inspection can be reduced, expand the scope of application of system.
Compared with prior art, the present invention has the advantage that
Video image correction is carried out using intelligent video-image identification technology combination horizontal vertical orientation measurement sensor, it is real
Show power transmission line sag real time on-line monitoring, while reducing shooting angle to the shadow of power transmission line sag monitoring calculation precision
It rings, has many advantages, such as that intelligence degree is high, easy to operate, low in cost, convenient for installation and maintenance.
In conjunction with power transmission line sag data, ambient temperature data, line energizing flow amount and line parameter circuit value, environment temperature pair is judged
The influence of power transmission line sag variation, while influence of the environment temperature to monitoring result is eliminated, realize power transmission line sag
Online evaluation and early warning, and substantially increase the accuracy of power transmission line sag early warning and alarm.
This system can use stationary structure, long-term at the scene to be fixedly mounted, and may be designed in portable construction, by
Operations staff carries；Intelligence degree height, strong real-time, easy to operate, low in cost, convenient for installation and maintenance, reduction fortune
The risk of administrative staff's inspection, the scope of application for expanding system have very high Stability and veracity.
Detailed description of the invention
Fig. 1: system structure diagram.
Fig. 2: stationary structure schematic diagram.
Fig. 3: portable construction schematic diagram.
In figure: 1-video image acquisition module, 2-horizontal vertical orientation measurement sensors, 3-Data Analysis Services moulds
Block, 4-ambient temperature measurement modules, 5-communication modules, 6-central servers, 7-portable constructions, 8-stationary structures.
Specific embodiment
The invention will now be described in further detail with reference to the accompanying drawings:
Such as Fig. 1 and Fig. 2, system includes video image acquisition module (1), horizontal vertical orientation measurement sensor (2), data
Analysis and processing module (3), video image acquisition module (1) acquire transmission line of electricity video or image information, are sent at data analysis
It manages module (3), Data Analysis Services module (3) carries out the analysis processing of video image, eliminates such environmental effects, extraction and shape
At the geological information of transmission line of electricity, and determine the end-point data of connection two sides shaft tower；Video image acquisition module (1) can use
DV or camera acquire the video or image information of transmission line of electricity；Data Analysis Services module (3) is extracted and shape
At the geological information of transmission line of electricity include transmission line of electricity transmission of electricity line profile and two sides shaft tower outer profile, be used for subsequent transmission of electricity
Circuit end points coordinate and arc sag size calculate.
Horizontal vertical orientation measurement sensor (2) acquires horizontally or vertically information, is sent to Data Analysis Services module (3),
Data Analysis Services module (3) calculates both vertically and horizontally, merges with the information of the transmission line of electricity extracted,
The geological information for the transmission line of electricity that said extracted goes out and the end-point data of connection two sides shaft tower are corrected, calculates transmission line of electricity accordingly
Minimum point arc sag size.When computing electric power line arc sag size, system is using the practical shelves between the shaft tower of transmission line of electricity both ends
It away from as scale, can obtain, realize easy by in-site measurement or from system parameter；And according to transmission line of electricity and shaft tower span
Proportionate relationship in the picture, the actual size of computing electric power line arc sag.
Such as Fig. 1, system further includes ambient temperature measurement module (4), and ambient temperature measurement module (4) acquires environment temperature letter
Breath, is sent to Data Analysis Services module (3), and Data Analysis Services module (3) utilizes environment temperature and transmission line of electricity itself parameter,
The normal arc sag size under the environment temperature is calculated, and is compared with above by the calculated arc sag size of video image
Compared with obtaining that arc sag is poor, when the arc sag difference presentation that the arc sag difference is more than setting limit value or certain time is gradually increased or suddenly
When increase tendency, early warning and alarm are carried out.Specially early warning is still alarmed, and can be determined as needed by staff, and pass through
Different limit values is set to realize.
Setting limit value size can according to the condition that is capable of providing of scene using 2 kinds it is different by the way of determination, first is that according to
The route is calculated when current-carrying capacity is 0 and rated value, arc sag fluctuation range caused by route generates heat under current environmental temperature
Come what is determined；Second is that being calculated offline in the current-carrying capacity and current environmental temperature according to the practical current-carrying capacity of current transmission line of electricity
For arc sag caused by road generates heat come what is determined, system measures the practical current-carrying capacity of current transmission line of electricity by increasing sensor, or
Person is directly obtained from power grid real-time running data by communication module (5), and the practical current-carrying capacity of obtained transmission line of electricity will have
Certain nargin coefficient, to prevent false alarm caused by transmission line of electricity operation fluctuation.
Such as Fig. 2, system can be designed as stationary structure (8), long-term at the scene to be fixedly mounted, including communication module (5),
Arc sag data and warning message are sent to operations staff or central server (6).With a varied topography, people locating for some transmission lines of electricity
Member is not easy to reach, and is installed using stationary structure, can reduce the risk and cost of operations staff's inspection, expands being applicable in for system
Range.
Such as Fig. 3, system is also designed to portable construction (7), is carried by operations staff, collection in worksite power transmission line
Arc sag data and warning message are sent to central server (6) by road arc sag information, due to system can to the image of acquisition or
Video information carries out angle correction, and being designed as portable construction (7) will not be influenced by shooting angle when collection in worksite, has very
High stability, and expand the scope of application of system.Portable construction (7) can be designed as dedicated portable hand-held
Machine has the smart phone of gravity accelerometer, even to facilitate operations staff to carry.
The foregoing is merely preferable embodiments of the invention, are not intended to limit the invention, all in spirit of the invention
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
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| CN201610661231.6A CN106289076B (en) | 2016-08-13 | 2016-08-13 | Power transmission line sag intelligent image on-line monitoring system |
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| CN201610661231.6A CN106289076B (en) | 2016-08-13 | 2016-08-13 | Power transmission line sag intelligent image on-line monitoring system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102019216561A1 (en) | 2019-10-28 | 2021-04-29 | Forschungs- und Transferzentrum Leipzig e.V. an der Hochschule für Technik, Wirtschaft und Kultur Leipzig (FH) | Device and method for determining a conductor cable sag in an overhead line |
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| CN107239658A (en) * | 2017-05-31 | 2017-10-10 | 国网福建省电力有限公司 | A kind of method and system for aiding in power transmission line sag measurement |
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| CN113124759B (en) * | 2019-12-31 | 2023-10-27 | 国网北京市电力公司 | Method, device, storage medium and electronic device for determining sag |
| CN111398736A (en) * | 2020-03-31 | 2020-07-10 | 国电南瑞科技股份有限公司 | Dynamic evaluation method for current-carrying capacity boundary of power transmission line |
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| CN116147691A (en) * | 2022-11-15 | 2023-05-23 | 国电南瑞科技股份有限公司 | Wire temperature sag image integrated monitoring device |
| CN116204845A (en) * | 2023-05-04 | 2023-06-02 | 国网湖北省电力有限公司 | Automatic power transmission line abnormality early warning system and early warning method based on big data |
| CN119291725B (en) * | 2024-12-11 | 2025-03-18 | 安徽博诺思信息科技有限公司 | A transmission line sag measurement system based on Beidou positioning technology |
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