CN107146223A - A kind of analysis system and method for power transmission tower and power transmission line displacement coupling - Google Patents
A kind of analysis system and method for power transmission tower and power transmission line displacement coupling Download PDFInfo
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- CN107146223A CN107146223A CN201710289984.3A CN201710289984A CN107146223A CN 107146223 A CN107146223 A CN 107146223A CN 201710289984 A CN201710289984 A CN 201710289984A CN 107146223 A CN107146223 A CN 107146223A
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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
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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
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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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/70—Determining position or orientation of objects or cameras
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2200/00—Indexing scheme for image data processing or generation, in general
- G06T2200/04—Indexing scheme for image data processing or generation, in general involving 3D image data
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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
- G06T2207/30232—Surveillance
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Abstract
The invention discloses the analysis system and method for a kind of power transmission tower and power transmission line displacement coupling, system includes power transmission tower measurement target drone, power transmission line measurement target drone, power transmission tower binocular identification prison system, power transmission line binocular identifying system；The present invention sets target in the specified point position of Transmission Tower-line first, is then continuously shot using high-speed camera, and photo is transported in pattern process computer by transfer wire；Image processing software in computer calculates the transient change of electric tower displacement of the lines according to the change of distance between two adjacent target spots, and with reference to the data independently monitored to power transmission tower and wire, tower line degree of coupling is analyzed using the method for mathematical statistics.This method has good operability and stability, and have the advantages that high sampling rate, high accuracy, noncontact and multiple spot are gathered in real time, it can realize to electric tower displacement of the lines effective monitoring, so that the research collapsed to study the charming appearance and behaviour of power transmission tower provides foundation, the structure design of optimization backward.
Description
Technical field
The invention belongs to structural health monitoring technology field, and in particular to one kind utilizes binocular vision displacement monitoring system point
Analyse the system and method for power transmission tower-power transmission line displacement coupling.
Background technology
In recent years, the accident that power transmission tower collapses under high wind effect is happened occasionally, and the life and property to the people are caused
Greatly threaten.But it is due to the coupling of power transmission tower and Transmission Tower-line under wind action, researcher is difficult to defeated
The destruction situation of electric tower is judged, wherein for tower-displacement of the lines coupling influence, lacking effective monitoring technology also can not just carry
Go out the measure that effective solution power transmission tower collapses.
Due to the limitation of power transmission tower-cable architecture site environment, passed with traditional sensor such as acceleration transducer, displacement
Sensor, laser sensor or global positioning system etc., can not meet and power transmission tower-cable architecture dynamic displacement monitoring has been wanted
Ask, thus also can not accurate evaluation displacement structure degree of coupling.Normal image treatment technology by a variety of images of flexible combination at
Adjustment method can complete the analysis of various scene motion images and the extraction of information, however normal image processing means there is also it is all
Many problems, such as parameter are more, hardly possible adjustment；Step is more, cumbersome error-prone；High to image quality requirements, illumination, noise are to algorithm performs
Effect has a direct impact.
In order to which more accurately, easily analysis tower-line coupled structure displacement intercouples degree, it is necessary to obtain the dynamic of structure
Displacement or displacement information, are badly in need of another efficient, real-time architecture dynamic displacement and technology for deformation monitoring, to obtain tower line coupling
Matched moulds state couples to analyze power transmission tower-displacement of the lines.
The content of the invention
In order to solve the above-mentioned technical problem, present invention utilizes a kind of use machine binocular vision technology, efficient, accurate
The system and method for true transmission of electricity tower-line system real-time dynamic monitoring network analysis power transmission tower-displacement of the lines coupling.
The technical scheme that is used of system of the present invention is：A kind of analysis system of power transmission tower and power transmission line displacement coupling,
It is characterized in that：Including power transmission tower measurement target drone, power transmission line measurement target drone, power transmission tower binocular identification prison system, power transmission line binocular
Identifying system；
The power transmission tower measurement target drone is some, is arranged as required on power transmission tower；The power transmission line measurement target drone is some,
It is arranged as required on power transmission line；
The power transmission tower binocular identification prison system includes two high-speed cameras, and two high-speed cameras are arranged in power transmission tower
Lower section, the three-dimensional coordinate for obtaining power transmission tower measurement target drone；
The power transmission line binocular identifying system includes two high-speed cameras, and two high-speed cameras are arranged under power transmission line
Side, the three-dimensional coordinate for obtaining power transmission line measurement target drone；
Four high-speed cameras are connected with pattern process computer by transfer wire, and described image processing calculates machine-readable
Take the high-speed camera to shoot the three-dimensional coordinate of measurement target drone in obtained frame serial-gram, and then calculate power transmission tower and transmission of electricity
Space displacement of each measuring point of line within the different measure cycles, analysis is along the power transmission tower displacement of power transmission tower point layout direction to power transmission line
The specific measuring point displacement degree of coupling.
The technical scheme that is used of method of the present invention is：A kind of analysis method of power transmission tower and power transmission line displacement coupling,
It is characterised in that it includes following steps：
Step 1：Obtain real-time wind speed and direction；
Step 2：The space displacement function for waving power transmission tower after rear power transmission line and vibration is calculated, and then calculates power transmission tower and defeated
Space displacement of each measuring point of electric wire within the different measure cycles；
Step 3：Selected permanent datum, it is considered to surveyed along the power transmission tower displacement of power transmission tower point layout direction to power transmission line i-th
Point displacement coupling degree, defines displacement coupling coefficient and arranges test result；
Step 4：Analysis is along the power transmission tower displacement of power transmission tower point layout direction to the specific measuring point displacement degree of coupling of power transmission line.
It is an advantage of the invention that：
1st, this method has good operability and stability, and with high sampling rate, high accuracy, noncontact and real-time etc.
Advantage, can realize effective prison that dynamic displacement of the body in the case of different wind speed and directions and deformation are coupled to power transmission tower-line
Control；
2nd, the power transmission tower charming appearance and behaviour vibration shape is complicated, be difficult to calculate, and the system can accurately be read same using image processing software
The three-dimensional coordinate of moment all targets, power transmission tower, power transmission line are extrapolated in different wind speed using respective algorithms and principle of dynamics
With the mode of oscillation under wind direction so that analyze power transmission tower-line internal resonance research provide foundation；
3rd, this method can be estimated to power transmission tower wind-induced vibration damage -form, it is possible to achieve dynamic structure design and
Structure optimization；
4th, compared with traditional mode acquisition methods, the instrument rate of recovery of this method is high, and manpower requirements are low, good economy performance.
Brief description of the drawings
Fig. 1 is the system schematic of the embodiment of the present invention；
Fig. 2 is the method flow diagram of the embodiment of the present invention.
Specific implementation method
Understand for the ease of those of ordinary skill in the art and implement the present invention, the present invention is made into one below in conjunction with the accompanying drawings
The detailed description of step, it will be appreciated that implementation example described herein is merely to illustrate and explain the present invention, is not used to limit
The present invention.
Surveyed see the analysis system of Fig. 1, the present invention a kind of power transmission tower provided and power transmission line displacement coupling, including power transmission tower
Measure target 1, power transmission line measurement target drone 2, power transmission tower binocular identification prison system 7, power transmission line binocular identifying system 8；Power transmission tower is measured
Target 1 is some, is arranged as required on power transmission tower 5；Power transmission line measurement target drone 2 is some, is arranged as required in power transmission line 3
On；Power transmission tower binocular identification prison system 7 includes two high-speed cameras, and two high-speed cameras are arranged in the lower section of power transmission tower 5, used
In the three-dimensional coordinate for obtaining power transmission tower measurement target drone 1；Power transmission line binocular identifying system 8 includes two high-speed cameras, two high
Fast camera arrangements are below power transmission line 3, the three-dimensional coordinate for obtaining power transmission line measurement target drone 2；Four high-speed cameras are equal
It is connected with pattern process computer by transfer wire, pattern process computer reads high-speed camera and shoots obtained frame series
The three-dimensional coordinate of measurement target drone in photo, and then calculate the space of power transmission tower 5 and each measuring point of power transmission line 3 within the different measure cycles
Displacement, analysis is along the displacement of power transmission tower point layout direction power transmission tower 5 to the specific measuring point displacement degree of coupling of power transmission line 3.
The frame number of the high-speed camera of the present embodiment is 1000~1500 frames/s, and wind speed and direction measuring device is that PHWE surveys wind
Instrument.
See the analysis method of Fig. 2, the present invention a kind of power transmission tower provided and power transmission line displacement coupling, including following step
Suddenly：
Step 1：Wind speed and direction test is carried out using PHWE anemometers；
Step 2：In two high-speed cameras of arranged beneath of power transmission tower-power transmission line system, recognized using power transmission tower binocular
Prison system 7, power transmission line binocular identifying system 8 and on power transmission tower 5 power transmission tower measurement target drone 1 and the transmission of electricity on power transmission line 3
Line measurement target drone 2 projects to 3D solid target position among the camera two dimensional image of left and right, and principle is expressed as：
X=K [R | t] X
Then rebuild using the 3D based on stereoscopic vision, by left camera coordinates PLj[xlj,ylj] and right camera coordinates PRj
[xRj,yRj] displacement differentiation is carried out, obtain the three-dimensional coordinate P of target spotj=(Xj,Yj,Zj)。
If the coordinate of all target spots of a certain moment is presented in software, with regard to power transmission tower specified point can be simulated
Real time position obtains space displacement function, and certain time period power transmission tower not in the same time and power transmission line further are carried out into dynamic analog
Intend, obtain coupling the measuring point power transmission tower space displacement function s of body using computerij：
sij(ti)=f [ti,gj(X,Y,Z)]；
Power transmission tower measuring point i space displacement in first measure cycle：
Other measuring point space displacements u in the first measure cycle can similarly be obtained21、u31、u41；
The replication cycle can obtain space displacement u12、u22、u32、u42And u13、u23、u33、u43、···；
According to certain measuring point power transmission line space displacement function：
lij(ti)=f [ti,gj(X,Y,Z)]；
Different measuring points power transmission line space displacement v in different cycles can similarly be obtained11、v21、v31、v41And v12、v22、v32、v42With
v13、v23、v33、v43.。
Step 3：For the measuring point of wire first, it is considered to wire first is surveyed along the power transmission tower displacement of power transmission tower point layout direction
Point displacement coupling degree, defines displacement coupling coefficientα12, α12... arrange test
As a result such as table 1：
Table 1
Step 4：Using mathematical statistics method analysis along the power transmission tower displacement of power transmission tower point layout direction to power transmission line first
The measuring point displacement degree of coupling, is comprised the following steps that：
Note：
Try to achieve
Look into F distributions quantile and obtain F1-α(3,8), if F>F1-α(3,8), then it is assumed that transmitted electricity along power transmission tower point layout direction
Tower displacement couples obvious to the measuring point displacement of power transmission line first；If F<F1-α(3,8), then it is assumed that defeated along power transmission tower point layout direction
Electric tower displacement couples unobvious to the measuring point displacement of power transmission line first.
Same method can analyze the position to the specific measuring point of power transmission tower along power transmission line point layout direction transmission of electricity displacement of the lines
Move the degree of coupling.
Although this specification has more used power transmission tower measurement target drone 1, power transmission line measurement target drone 2, power transmission line 3, waved
Power transmission tower 6, power transmission tower binocular recognize the arts such as prison system 7, power transmission line binocular identifying system 8 after power transmission line 4, power transmission tower 5, vibration afterwards
Language, but it is not precluded from the possibility using other terms.Using these terms just for the sake of the more easily description present invention's
Essence, is construed as any additional limitation and is all disagreed with spirit of the present invention.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, therefore it can not be considered to this
The limitation of invention patent protection scope, one of ordinary skill in the art is not departing from power of the present invention under the enlightenment of the present invention
Profit is required under protected ambit, can also be made replacement or be deformed, each fall within protection scope of the present invention, this hair
It is bright scope is claimed to be determined by the appended claims.
Claims (6)
1. the analysis system of a kind of power transmission tower and power transmission line displacement coupling, it is characterised in that：Including power transmission tower measurement target drone (1),
Power transmission line measurement target drone (2), power transmission tower binocular identification prison system (7), power transmission line binocular identifying system (8)；
The power transmission tower measurement target drone (1) is some, is arranged as required on power transmission tower (5)；The power transmission line measurement target drone (2)
It is some, it is arranged as required on power transmission line (3)；
The power transmission tower binocular identification prison system (7) includes two high-speed cameras, and two high-speed cameras are arranged in power transmission tower
(5) lower section, the three-dimensional coordinate for obtaining power transmission tower measurement target drone (1)；
The power transmission line binocular identifying system (8) includes two high-speed cameras, and two high-speed cameras are arranged in power transmission line (3)
Lower section, the three-dimensional coordinate for obtaining power transmission line measurement target drone (2)；
Four high-speed cameras are connected with pattern process computer by transfer wire, and described image processing computer reads institute
The three-dimensional coordinate that high-speed camera shoots measurement target drone in obtained frame serial-gram is stated, and then calculates power transmission tower (5) and transmission of electricity
Space displacement of line (3) each measuring point within the different measure cycles, is analyzed along power transmission tower point layout direction power transmission tower (5) displacement pair
The specific measuring point displacement degree of coupling of power transmission line (3).
2. the analysis system of power transmission tower according to claim 1 and power transmission line displacement coupling, it is characterised in that：The high speed
The frame number of video camera is 1000~1500 frames/s.
3. the analysis system of power transmission tower according to claim 1 and power transmission line displacement coupling, it is characterised in that：The wind speed
Direction measuring apparatus is PHWE anemometers.
4. the analysis method of a kind of power transmission tower and power transmission line displacement coupling, it is characterised in that comprise the following steps：
Step 1：Obtain real-time wind speed and direction；
Step 2：Calculating wave rear power transmission line (4) and vibration after power transmission tower (6) space displacement function, and then calculate power transmission tower and
Space displacement of each measuring point of power transmission line within the different measure cycles；
Step 3：Selected permanent datum, it is considered to along the power transmission tower displacement of power transmission tower point layout direction to the measuring point of power transmission line i-th position
The degree of coupling is moved, displacement coupling coefficient is defined and arranges test result；
Step 4：Analysis is along the power transmission tower displacement of power transmission tower point layout direction to the specific measuring point displacement degree of coupling of power transmission line.
5. the analysis method of power transmission tower according to claim 4 and power transmission line displacement coupling, it is characterised in that：In step 2,
Using binocular vision technology, 3D solid measurement target drone position is projected into power transmission tower binocular identification prison system (7) or power transmission line
Among the left and right camera two dimensional image of binocular identifying system (8), then rebuild using the 3D based on stereoscopic vision, obtain measurement target
The three-dimensional coordinate of target point；According to the coordinate of all measurement target drone target spots of a certain moment, power transmission tower specified point or transmission of electricity are simulated
The real time position of line specified point obtains space displacement function, and then calculates power transmission tower and each measuring point of power transmission line in the different measure cycles
Interior space displacement.
6. the analysis method of power transmission tower according to claim 4 and power transmission line displacement coupling, it is characterised in that：In step 4,
Using mathematical statistics method, the F as F values that comparative measurements is calculated and obtained by tabling look-up is distributed quantile and judged along power transmission tower measuring point
Whether arranged direction is obvious to the coupling of power transmission line specific measuring point displacement, analyzes in the same way along power transmission line point layout direction
Displacement of the lines of transmitting electricity is to the specific measuring point displacement degree of coupling of power transmission tower.
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| CN110276787A (en) * | 2019-06-27 | 2019-09-24 | 安徽勘派斯导航信息科技有限公司 | Conductor galloping monitoring method based on marker image detection |
| CN110704889A (en) * | 2019-07-18 | 2020-01-17 | 重庆瑜煌电力设备制造有限公司 | Robustness calculation method for continuous collapse of power transmission tower-line system |
| CN112632833A (en) * | 2020-12-29 | 2021-04-09 | 国网河北省电力有限公司保定供电分公司 | Method and device for optimizing arrangement of tilt angle sensors of power transmission tower |
| CN113063359A (en) * | 2021-03-31 | 2021-07-02 | 中煤科工集团重庆研究院有限公司 | Micro displacement identification method |
| CN114383511A (en) * | 2021-11-30 | 2022-04-22 | 甘肃智通科技工程检测咨询有限公司 | Cascade target self-calibration type large structure displacement deformation measurement method |
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| CN112632833A (en) * | 2020-12-29 | 2021-04-09 | 国网河北省电力有限公司保定供电分公司 | Method and device for optimizing arrangement of tilt angle sensors of power transmission tower |
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| CN114383511B (en) * | 2021-11-30 | 2024-04-19 | 甘肃智通科技工程检测咨询有限公司 | Cascade target self-calibration type large-scale structural body displacement deformation measurement method |
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