CN110736507A - method for detecting defect of insulator for transmission line and terminal equipment - Google Patents
method for detecting defect of insulator for transmission line and terminal equipment Download PDFInfo
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Abstract
The invention discloses a insulator defect detection method for a power transmission line and terminal equipment, and relates to the technical field of disaster prevention and reduction of the power transmission line, wherein the method comprises the steps of S1 selecting a measuring point, selecting the periphery of a power transmission tower as a ground measuring point, selecting a position above the ground measuring point and flush with an insulator as an aerial measuring point, S2 visible light measurement, analyzing a visible light shooting picture and obtaining a visible defect result, S3 infrared light measurement, analyzing an infrared light shooting picture and obtaining the difference between the axial distribution of the insulator and the temperature distribution of the A-C phase insulator, S4 ultraviolet light measurement, analyzing an ultraviolet light shooting picture and obtaining an insulator surface discharge condition analysis result, S5 defect degree evaluation and positioning, and positioning the defect position and determining the defect grade, wherein the equipment comprises four program modules including the visible light measurement, the infrared light measurement, the ultraviolet light measurement, the defect degree evaluation and the positioning, and the like, and the working efficiency of inspecting the insulator by inspecting personnel is improved through the steps of S1-S5.
Description
Technical Field
The invention relates to the technical field of disaster prevention and reduction of power transmission lines, in particular to a method for detecting defects of insulators for power transmission lines and terminal equipment.
Background
The insulator is a connecting element of a tower and a lead and mainly plays a role in supporting and insulating. The insulator is directly exposed in the atmosphere in the operation process, and under the combined action of complex environments such as lightning, strong wind, rainstorm, high temperature, pollution, artificial treading and the like, the insulator is easy to have defects such as damage, carbonization channel, leakage track, sealing damage and the like, and even has serious electric power accidents such as string falling, internal breakdown and the like in severe cases.
The method mainly comprises visible light observation, infrared temperature measurement and ultraviolet discharge detection, but the insulators are suspended at high altitude and are different from the ground, when patrolling personnel hold equipment, the serious defects of the insulators are difficult to find due to the observation angle and shielding effects of an insulator umbrella skirt, a lead and a tower during ground detection, the working efficiency of tower climbing detection is extremely low, the tower climbing detection of 1-3 base towers can be completed only in days by two persons, the types of the defects of the insulators are more, and all the defects of the insulators are difficult to effectively detect only by methods.
Therefore, a new insulator defect detection method is explored, the advantages of various detection means are integrated, multi-directional detection of the insulator defects is achieved, manual intelligent means such as unmanned aerial vehicles are used, personnel are prevented from climbing the tower to operate, the working pressure of patrol personnel is reduced, the working efficiency of the patrol personnel is improved, and the safe and reliable operation of the power transmission line is guaranteed.
Problems with the prior art and considerations:
how to solve the technical problem that the inspection personnel detects the work efficiency of the insulator.
Disclosure of Invention
The invention aims to solve the technical problem of providing insulator defect detection methods and terminal equipment for power transmission lines, which improve the working efficiency of inspection personnel for detecting insulators through steps of S1 measurement point selection, S2 visible light measurement, S3 infrared light measurement, S4 ultraviolet light measurement, S5 defect degree evaluation and positioning and the like.
The invention aims to solve the technical problems, and adopts the technical scheme that the insulator defect detection method for the transmission line comprises the following steps of S1 selecting a measuring point, selecting the periphery of the transmission line as a ground measuring point, selecting a position above the ground measuring point and on the insulator to be level as an aerial measuring point, S2 measuring visible light, analyzing visible light images of the surface of the insulator at every position on the ground and in the air to obtain an insulator surface visible defect analysis result, S3 measuring infrared light, analyzing infrared light images of the insulator at every 3578 positions on the ground and in the air to obtain the axial distribution of the insulator and the difference of the temperature distribution of the A-C phase insulator, S4 measuring ultraviolet light, analyzing ultraviolet light images of the insulator at every positions on the ground and in the air to obtain an insulator surface discharge condition analysis result, S5 evaluating and positioning defect positions, positioning defect positions according to the measuring analysis result, and classifying the defect severity from heavy to light according to the harmfulness of defect development.
, selecting at least four directions as measuring points in the step of S1, keeping the corresponding visible light, infrared light and ultraviolet light measuring positions at , keeping the corresponding ground measuring point at , keeping the height of the air measuring point at and the center of the insulator at , and keeping no barrier between the measuring points and the insulator, if ground measuring points find that the insulator is defective, adding at least two measuring points at two sides of the corresponding air measuring point, and keeping the angle difference between the newly added measuring point and the adjacent original measuring point at .
, in the step of S2 visible light measurement, firstly carrying out ground measurement and then carrying out aerial measurement, if the end part of the insulator is damaged in a sealing way, and the sheath is seriously damaged to endanger the core rod or the connecting hardware is cracked, infrared light and ultraviolet light measurement is not needed, the defect of the insulator is directly judged to be in an emergency level, and the position of the defect is judged by a visible light picture.
, in the step of S3 infrared light measurement, comparing the distribution of the integral axial temperature field of the insulator with the temperature distribution of the A-C phase insulator, if the temperature of the insulator surface is higher than that of the axially adjacent part by 1K, determining that the insulator has defects, wherein the defects comprise serious dirt accumulation, low value and zero value of the inorganic insulator, damage of the umbrella skirt of the composite insulator and water inlet moisture, and if the temperature of the phase insulator is higher than that of the other phase insulator by more than 1K, determining that the insulator has the defects of integral degradation and serious dirt accumulation.
, in the step of S4 ultraviolet measurement, selecting weather with humidity more than 80% to perform ultraviolet measurement, and if the surface of the insulator discharges, judging that the insulator has defects, wherein the defects comprise water drops, dirt, umbrella skirt sheath cracking, low value and zero value of the inorganic insulator, sealing damage of the end part of the composite insulator, carbonization channel inside the composite insulator, surface leakage trace of the composite insulator and electrical similarity loss.
, in the step of evaluating and positioning the defect degree S5, analyzing the harmfulness of the defect in step development according to the shooting results of visible light, infrared light and ultraviolet light, evaluating the defect severity, and classifying the defect severity from heavy to light;
if the defects found by the visible light and the defects found by the infrared light and the ultraviolet light are defects, the positions of the defects are positioned according to the shooting result of the visible light, if not defects are found, whether the positions of the hot spots and the discharge points are defects or not is analyzed, if defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are the defect positions, and if not defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are determined by the positions of the discharge points.
insulator defect detection terminal equipment for power transmission lines comprises four program modules, namely visible light measurement, infrared light measurement, ultraviolet light measurement and defect degree evaluation and positioning, wherein the visible light measurement module is used for shooting a visible light image of an insulator and analyzing visible defects on the surface of the insulator by manually holding or carrying the visible light measurement equipment by an unmanned aerial vehicle, the infrared light measurement module is used for shooting an infrared light image of the insulator and analyzing overheating defects of the insulator by manually holding or carrying the infrared light measurement equipment by the unmanned aerial vehicle, the ultraviolet light measurement module is used for shooting an ultraviolet light image of the insulator and analyzing discharge defects of the insulator by manually holding or carrying the ultraviolet light measurement equipment by the unmanned aerial vehicle, and the defect degree evaluation and positioning module is used for evaluating and positioning the defect severity degree according to the detection and analysis results of the visible light, the infrared light and the ultraviolet light by combining with the generation mechanism and the development trend of the defects.
, the method also includes selecting measuring points module to select ground and air measuring points.
, the unmanned aerial vehicle carrying visible light, infrared light or ultraviolet light detection equipment has a carrying capacity of more than 3kg, has a cruising capacity of more than 15min after carrying, realizes hovering in the air, is provided with a holder carrying visible light, infrared light or ultraviolet light, is in wireless communication connection with the outside, and can be used for checking shot pictures on the ground by personnel, and the horizontal or vertical angle of the holder can be adjusted.
, the method also includes a memory for storing the program modules and a processor for retrieving the program modules from the memory and executing the steps of the method.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
method for detecting defects of insulators for power transmission lines includes steps of S1 selecting a measuring point, selecting the periphery of a power transmission tower as a ground measuring point, selecting a position above the ground measuring point and level with the insulators as an aerial measuring point, S2 measuring visible light, analyzing visible light images of the surface of the insulators at every positions on the ground and in the air to obtain an analysis result of visible defects of the surface of the insulators, S3 measuring infrared light, analyzing infrared light images of the insulators at every positions on the ground and in the air to obtain axial distribution of the insulators and differences of temperature distribution of the insulators at A-C phases, S4 measuring ultraviolet light, analyzing ultraviolet light images of the insulators at every positions on the ground and in the air to obtain an analysis result of surface discharge conditions of the insulators, S5 defect degree evaluation and positioning, positioning the defect positions according to the measurement and analysis result, classifying the defect degrees into critical, severe, and defect-free degrees by combining harmfulness of defects, and improving inspection efficiency of the insulators by S63 1 selecting the measuring point, S2 measuring visible light, S8945, S8236 and the infrared measuring efficiency.
insulator defect detection terminal equipment for power transmission lines comprises four program modules, namely visible light measurement, infrared light measurement, ultraviolet light measurement, defect degree evaluation and positioning, a visible light measurement module used for shooting a visible light image of an insulator and analyzing visible defects on the surface of the insulator by manually holding or carrying the visible light measurement equipment by an unmanned aerial vehicle, an infrared light measurement module used for shooting an infrared light image of the insulator and analyzing overheating defects of the insulator by manually holding or carrying the infrared light measurement equipment by the unmanned aerial vehicle, an ultraviolet light measurement module used for shooting an ultraviolet light image of the insulator and analyzing discharge defects of the insulator by manually holding or carrying the ultraviolet light measurement equipment by the unmanned aerial vehicle, and a defect degree evaluation and positioning module used for evaluating and positioning the defect severity according to the detection and analysis results of the visible light, the infrared light and the ultraviolet light by combining with the generation mechanism and development trend of the defects.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a functional block diagram of the present invention;
FIG. 3 is a live view of aerial drone survey in the present invention;
FIG. 4 is a live view of a ground survey of the present invention;
FIG. 5 is a distribution diagram of measurement points in the present invention.
Detailed Description
The following description of at least exemplary embodiments is merely illustrative in nature and is in no way intended to limit the application, its application, or uses, as such embodiments are within the scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and one skilled in the art may make the analogy without departing from the spirit of the present application, and thus the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present application unless otherwise specifically stated, it should be understood that the dimensions of the various parts illustrated in the drawings are not drawn to scale as actual for ease of description.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
For ease of description, spatially relative terms such as "over … …", "over … …", "over … …", "over" and the like may be used herein to describe the spatially positional relationship of devices or features to other devices or features as illustrated in the figures.
It should be noted that the terms "", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and unless otherwise stated, the terms have no special meaning, and therefore, should not be construed as limiting the scope of the present application.
Example 1:
as shown in fig. 1, the invention discloses an method for detecting insulator defects for transmission lines, which comprises the following steps,
s1 selecting a measuring point
And selecting the periphery of the transmission tower as a ground measuring point, and selecting the position above the ground measuring point and on the same level with the insulator as an aerial measuring point.
Four directions are selected as measuring points, corresponding visible light, infrared light and ultraviolet light measuring positions are kept , corresponding ground measuring points are kept , the height of the air measuring points is kept , the angle difference between the directions is , no shielding object exists between the measuring points and the insulator, if ground measuring points find that the insulator is defective, at least two measuring points are added at two sides of the corresponding air measuring points, and the angle difference between the newly added measuring points and the adjacent original measuring points is kept .
S2 visible light measurement
And analyzing the visible light shot pictures of the surface of the insulator at every directions on the ground and in the air to obtain the analysis result of the visible defects of the surface of the insulator.
The method comprises the steps of firstly carrying out ground measurement and then carrying out aerial measurement, directly judging whether the defects of the insulator are critical levels or not without carrying out infrared light and ultraviolet light measurement if the phenomenon that the end part of the insulator is damaged in a sealing way and the sheath is seriously damaged to endanger a core rod or the connecting hardware has cracks is found, and judging the positions of the defects through visible light pictures.
S3 Infrared light measurement
And analyzing infrared shot pictures of the insulator at every directions on the ground and in the air to obtain the axial distribution of the insulator and the difference of the temperature distribution of the A-C phase insulator.
Comparing the integral axial temperature field distribution of the insulator with the temperature distribution of the A-C phase insulators, if the temperature of the surface of the insulator is higher than that of the axially adjacent part by 1K, judging that the insulator has defects, wherein the defects comprise serious pollution accumulation, low value and zero value of the inorganic insulator, damage of a composite insulator umbrella skirt and water inlet damp, and if the temperature of the phase insulator is higher than that of the other phase insulators by more than 1K, judging that the insulator has the defects of integral degradation and serious pollution accumulation.
S4 ultraviolet measurement
And (4) analyzing ultraviolet light shooting pictures of the insulator at every directions in the ground and the air to obtain an analysis result of the surface discharge condition of the insulator.
And selecting the weather with the humidity of more than 80% for ultraviolet measurement, and judging that the insulator has defects if the surface of the insulator discharges, wherein the defects comprise water drops, dirt, the cracking of an umbrella skirt sheath, the low value and zero value of an inorganic insulator, the sealing damage of the end part of the composite insulator, a carbonization channel inside the composite insulator, the electric leakage trace on the surface of the composite insulator and the electric similar loss.
S5 defect level assessment and localization
Based on the above measurement and analysis results, the location of the defect is located, and the severity of the defect is classified from heavy to light as critical, severe, -like and defect-free, in combination with the harmfulness of the defect in steps.
And analyzing the harmfulness of the defect in the step according to the shooting results of visible light, infrared light and ultraviolet light, and evaluating the severity of the defect, wherein the severity is classified into critical, severe, -type and defect-free.
If the defects found by the visible light and the defects found by the infrared light and the ultraviolet light are defects, the positions of the defects are positioned according to the shooting result of the visible light, if not defects are found, whether the positions of the hot spots and the discharge points are defects or not is analyzed, if defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are the defect positions, and if not defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are determined by the positions of the discharge points.
Example 2:
as shown in fig. 2, the invention discloses types of insulator defect detection terminal equipment for a power transmission line, which comprises a server, visible light measuring equipment, infrared light measuring equipment, ultraviolet light measuring equipment, and four program modules in total, wherein the visible light measuring equipment, the infrared light measuring equipment, the ultraviolet light measuring equipment, the defect degree evaluation and the defect degree positioning are installed on an unmanned aerial vehicle, the visible light measuring equipment, the infrared light measuring equipment and the ultraviolet light measuring equipment are respectively connected with the server and are in two-way communication, and the server, the visible light measuring equipment, the infrared light measuring equipment and the ultraviolet light measuring equipment are respectively provided with.
And the measuring point selecting module is used for selecting the ground and air measuring points.
As shown in fig. 3, the visible light measuring module is used for shooting a visible light image of the insulator and analyzing visible surface defects of the insulator by mounting a visible light measuring device on the unmanned aerial vehicle.
As shown in fig. 3, the infrared light measurement module is used for shooting an infrared light image of the insulator and analyzing the overheating defect of the insulator by using an infrared light measurement device carried by the unmanned aerial vehicle.
As shown in fig. 3, the ultraviolet measurement module is used for shooting an ultraviolet image of the insulator and analyzing the discharge defect of the insulator by using an unmanned aerial vehicle to carry an ultraviolet measurement device.
And the defect degree evaluation and positioning module is used for evaluating and positioning the severity degree of the defect according to the detection and analysis results of visible light, infrared light and ultraviolet light and by combining the generation mechanism and the development trend of the defect.
The unmanned aerial vehicle carrying the visible light, infrared light and ultraviolet light detection equipment has the carrying capacity of more than 3kg, the cruising ability after carrying is more than 15min, hovering in the air is realized, the unmanned aerial vehicle is provided with the cloud platform carrying the visible light, infrared light and ultraviolet light, the cloud platform is in wireless communication connection with an external server, people check shot pictures on the ground, and the horizontal or vertical angle of the cloud platform is adjustable.
Example 3:
embodiment 3 is different from embodiment 1 in that the visible light measuring device, the infrared light measuring device, and the ultraviolet light measuring device are held by hand.
As shown in fig. 2, the invention discloses types of insulator defect detection terminal equipment for power transmission lines, which comprises a server, a visible light measuring device, an infrared light measuring device, an ultraviolet light measuring device, and four program modules in total for visible light measurement, infrared light measurement, ultraviolet light measurement, defect degree evaluation and positioning, wherein the visible light measuring device, the infrared light measuring device and the ultraviolet light measuring device are respectively connected with the server and are in bidirectional communication, and the server, the visible light measuring device, the infrared light measuring device and the ultraviolet light measuring device are all provided with a memory and a processor for operating the steps of the method.
And the measuring point selecting module is used for selecting the ground and air measuring points.
As shown in fig. 4, the visible light measuring module is configured to capture a visible light image of the insulator and analyze a visible defect on the surface of the insulator by manually holding the visible light measuring device.
As shown in fig. 4, the infrared light measuring module is configured to shoot an infrared light image of the insulator by manually holding the infrared light measuring device, and analyze the overheating defect of the insulator.
As shown in fig. 4, the ultraviolet light measurement module is configured to capture an ultraviolet light image of the insulator and analyze a discharge defect of the insulator by manually holding the ultraviolet light measurement device.
And the defect degree evaluation and positioning module is used for evaluating and positioning the severity degree of the defect according to the detection and analysis results of visible light, infrared light and ultraviolet light and by combining the generation mechanism and the development trend of the defect.
Technical contribution of the present application:
the method comprises the steps of selecting ground and aerial measuring points, ground and aerial visible light measurement, ground and aerial infrared light measurement, ground and aerial ultraviolet light measurement and insulator defect degree evaluation and positioning, multi-azimuth monitoring of insulator defects is achieved on the ground and in the air, rapidness of ground detection and accuracy of aerial detection after unmanned aerial vehicles are carried are integrated, and effectiveness of insulator defect detection is improved and accuracy of defect position positioning is improved by analyzing visible light, infrared light and ultraviolet light measurement results.
Description of the drawings:
1, kinds of insulator defect detection method for transmission line, including:
(1) a measurement point is selected. A plurality of positions around the transmission tower are selected as ground measuring points, and positions above the ground measuring points and equal to the insulator are selected as aerial measuring points.
(2) And (4) measuring visible light. And analyzing the visible light shot pictures of the surface of the insulator in all directions on the ground and in the air to obtain the analysis result of the visible defects of the surface of the insulator.
(3) And (5) measuring infrared light. And analyzing the infrared shot pictures of the insulators in all directions on the ground and in the air to obtain the axial distribution of the insulators and the difference of the temperature distribution of the insulators in different phases.
(4) And (6) ultraviolet measurement. And analyzing the ultraviolet shot pictures of the insulators in all directions on the ground and in the air to obtain the analysis result of the surface discharge condition of the insulators.
(5) And (4) evaluating and positioning the defect position according to the measurement and analysis results, and classifying the defect severity into critical, severe, -class and defect-free according to the harmfulness of the defect in step.
2. The selecting of the measuring point comprises the following steps:
as shown in FIG. 5, at least 4 azimuths are selected as measuring points, the measuring positions of visible light, infrared light and ultraviolet light are maintained at , the measuring points of ground and air are maintained at , the height of the measuring point of air and the center of an insulator are maintained at , the angle difference between each azimuth is maintained at , no obvious shielding object is required between each measuring point and the insulator, if one measuring point on the ground finds that the insulator is defective, at least 2 measuring points are added at the two sides of the measuring point corresponding to the measuring point, and the angle difference between the newly added measuring point and the adjacent original measuring point is maintained at .
3. The visible light measurement comprises:
the method comprises the steps of firstly carrying out ground measurement and then carrying out aerial measurement, and directly judging whether the defects of the insulator are critical levels or not without carrying out infrared light and ultraviolet light measurement if the defects of the insulator are found to have end sealing damage and serious damage of a sheath to endanger a core rod and cracks on a connecting metal fitting, and judging the positions of the defects through visible light pictures.
4. The infrared light measurement comprises the following steps:
comparing the integral axial temperature field distribution of the insulator with the temperature distribution of insulators of different phases, judging that the insulator has defects if the temperature of a certain part of the surface of the insulator is higher than that of an axially adjacent part by 1K or more, wherein the defects comprise serious pollution accumulation, low value and zero value of an inorganic insulator, damage of a composite insulator umbrella skirt, water inflow and moisture and the like, and judging that the insulator has the defects of integral degradation, serious pollution accumulation and the like if the temperature of a certain -phase insulator is higher than that of other-phase insulators by more than 1K.
5. The ultraviolet light measurement comprises the following steps:
the method is characterized in that the weather with humidity more than 80% is selected for ultraviolet measurement, if the surface of the insulator discharges, the insulator is judged to have defects, and the defects comprise: water drop, dirt, shed sheath cracking, low value and zero value of the inorganic insulator, sealing damage of the end part of the composite insulator, carbonization channel inside the composite insulator, electric leakage tracking and electric damage on the surface of the composite insulator and the like.
6. The defect degree evaluation and positioning measurement comprises the following steps:
according to the shooting results of visible light, infrared light and visible light, the harmfulness of the defect in the step is analyzed, and the severity of the defect is evaluated and is classified into critical, severe, -class and defect-free from heavy to light.
The critical defects comprise that cracks are formed in the critical core rod and the metal connecting part of the insulator when the end part of the composite insulator is damaged in a sealing mode and the sheath is seriously damaged in a visible light shooting mode, the insulator is found to have the same defects in infrared light and ultraviolet light, and the composite insulator sheath stably discharges.
Serious drawbacks include: the umbrella skirt of the composite insulator falls, multiple pieces of the glass insulator explode automatically, the damaged area of the umbrella skirt of the porcelain insulator exceeds 1/4 of the area of the umbrella skirt, the infrared light finds that the insulator has hot spots or is overheated integrally in the axial direction, and the ultraviolet light finds that stable light spots generated by surface dirt accumulation of the insulator discharge.
the defects include breakage of the umbrella skirt of the composite insulator, self-explosion of the single glass insulator, 1/4 that the breakage area of the umbrella skirt of the porcelain insulator is smaller than that of the umbrella skirt, discharge caused by water drops on the surface of the insulator, leakage tracks and similar damage of the umbrella skirt, metal dust and the like found by ultraviolet light, and unstable facula discharge on the surface of the insulator found by the ultraviolet light.
No defect: i.e. no defects are found in the visible light, infrared light and ultraviolet light.
If the defects found by the visible light and the defects found by the infrared light and the ultraviolet light are defects, the positions of the defects are positioned according to the shooting result of the visible light, if not defects are found, whether the positions of the hot spots and the discharge points are defects or not is analyzed, if defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are the defect positions, and if not defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are determined by the positions of the discharge points.
7, kinds of insulator defect detection terminal equipment for transmission line, include:
a visible light measuring module: the method is used for carrying visible light measuring equipment through manual holding and an unmanned aerial vehicle, shooting visible light images of the insulator in a plurality of directions and analyzing visible surface defects of the insulator.
An infrared light measurement module: the infrared light image analysis system is used for carrying infrared light measuring equipment through manual holding and an unmanned aerial vehicle, shooting infrared light images of the insulator in a plurality of directions and analyzing the overheating defect of the insulator.
An ultraviolet light measurement module: the ultraviolet light image of the insulator is shot in a plurality of directions by manually holding the ultraviolet light measuring equipment and carrying the ultraviolet light measuring equipment by an unmanned aerial vehicle, and the discharge defect of the insulator is analyzed.
The defect degree evaluation and positioning module: the method is used for evaluating and positioning the severity of the defects according to the detection and analysis results of visible light, infrared light and ultraviolet light and by combining the generation mechanism and development trend of different defects.
8. The device also comprises a measuring point selecting module used for selecting the measuring points on the ground and in the air.
9. Carry on unmanned aerial vehicle of visible light, infrared light and ultraviolet light check out test set, its loading capacity should be more than 3kg, the duration is greater than 15min after the load, can realize hovering in the air, dispose the cloud platform of carrying on visible light, infrared light, ultraviolet light, have the wireless communication function, personnel can look over the picture of shooing on ground, the cloud platform has antidetonation and stable function, guarantees that the picture is shot clearly, cloud platform level and vertical angle are adjustable.
10. Comprising a memory, a processor and a computer program running on the processor, wherein the steps of any of the methods of items 1-7 and are implemented.
The application has the advantages that:
(1) this application combines ground and unmanned aerial vehicle to carry on visible light, infrared light, ultraviolet ray and shoots equipment and distinguishes the overhead transmission line with the insulator defect, combines all kinds of spectrogram detection technology advantages, has stipulated all kinds of detection orders, has improved detection efficiency.
(2) This application accessible unmanned aerial vehicle carries on visible light, infrared light, ultraviolet ray and shoots equipment and detect the insulator defect, has solved and has caused the difficult problem that the rate of accuracy is low by influences such as observation angle and shelter from thing in the ground detection.
(3) The method and the device have the advantages that various detection sequences are specified, detection time is saved, detection efficiency is improved, and the detection requirements of large distance and complex environment of the overhead transmission line are met.
(4) The position of all kinds of detection items has been stipulated in this application, has made things convenient for field technician to use.
(5) The severity of various defects is specified, and a defect positioning method is provided to guide a power grid enterprise to make an operation and maintenance strategy.
Claims (10)
- The method for detecting the defects of the insulators for the power transmission lines is characterized by comprising the following steps of S1 selecting measuring points, selecting the periphery of a power transmission tower as a ground measuring point, selecting a position above the ground measuring point and flush with the insulators as an aerial measuring point, S2 measuring visible light, analyzing visible light images of the surfaces of the insulators in every directions on the ground and in the air to obtain an analysis result of the visible defects of the surfaces of the insulators, S3 measuring infrared light, analyzing infrared light images of the insulators in every 3578 directions on the ground and in the air to obtain axial distribution of the insulators and difference of temperature distribution of the insulators in an A-C phase, S5639 measuring ultraviolet light, analyzing ultraviolet light images of the insulators in every directions on the ground and in the air to obtain an analysis result of the surface discharge condition of the insulators, S5 evaluating and positioning the defect degree, positioning the defect positions according to the measurement and analysis result, and classifying the severity of the defects from heavy to light by combining with harmfulness of defect development in .
- 2. The method of detecting insulator defects in types of power transmission lines according to claim 1, wherein in the step of selecting the measuring points in S1, at least four positions are selected as the measuring points, the corresponding visible light, infrared light and ultraviolet light measuring positions are maintained at , the corresponding ground measuring points are maintained at , the height of the air measuring points is maintained at , the center of the insulator is maintained at , no shielding is left between the measuring points and the insulator, if ground measuring points find that the insulator is defective, at least two measuring points are added at two sides of the corresponding air measuring points, and the angle difference between the newly added measuring points and the original measuring point is maintained at .
- 3. The method of detecting defects in kinds of insulators for power transmission lines according to claim 1, wherein in the step of S2 measuring with visible light, the ground is measured first, then the aerial measurement is performed, if the insulator is found to have a damaged end seal, a seriously damaged sheath endangers the core rod or the connecting hardware has a crack, the insulator is directly judged to be of an emergency grade without infrared light and ultraviolet light measurement, and the defect position is judged by a visible light picture.
- 4. The method for detecting the defects of the insulators for the power transmission lines as claimed in claim 1, wherein in the step of S3 infrared light measurement, the integral axial temperature field distribution of the insulators and the temperature distribution of the A-C phase insulators are compared, if the temperature at on the surface of the insulator is higher than 1K of the axially adjacent part of the insulator, the insulators are determined to have defects, wherein the defects comprise serious pollution accumulation, low value and zero value of the inorganic insulator, damage of a composite insulator umbrella skirt and moisture of inlet water, and if the temperature of phase insulators is higher than 1K of other phase insulators, the insulators are determined to have the defects of integral degradation and serious pollution accumulation.
- 5. The method for detecting the defects of the insulators for the transmission lines according to claim 1, wherein in the step of measuring S4 ultraviolet light, the weather with the humidity of more than 80% is selected for ultraviolet light measurement, and if the surface of the insulator discharges, the insulator is judged to have defects, wherein the defects include water drops, dirt, shed sheath cracking, low and zero values of the inorganic insulator, seal failure of the end part of the composite insulator, carbonization channels inside the composite insulator, surface leakage marks of the composite insulator and electric corrosion damage.
- 6. The method for detecting the defects of the insulators for the transmission lines according to claim 1, wherein in the step of evaluating and positioning the defect degree of S5, the harmfulness of the defect in step development is analyzed according to the shooting results of visible light, infrared light and ultraviolet light, the severity of the defect is evaluated, and the defects are classified from heavy to light;if the defects found by the visible light and the defects found by the infrared light and the ultraviolet light are defects, the positions of the defects are positioned according to the shooting result of the visible light, if not defects are found, whether the positions of the hot spots and the discharge points are defects or not is analyzed, if defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are the defect positions, and if not defects are found, the hot spots of the defects such as zero values, low values and dirt accumulation of the inorganic insulator are determined by the positions of the discharge points.
- 7, insulator defect detection terminal equipment for power transmission lines is characterized by comprising four program modules including a visible light measurement module, an infrared light measurement module, an ultraviolet light measurement module and a defect degree evaluation and positioning module, wherein the visible light measurement module is used for shooting a visible light image of an insulator and analyzing a visible defect on the surface of the insulator by carrying the visible light measurement device with a manual hand and an unmanned aerial vehicle, the infrared light measurement module is used for shooting an infrared light image of the insulator and analyzing an overheating defect of the insulator by carrying the infrared light measurement device with the manual hand and the unmanned aerial vehicle, the ultraviolet light measurement module is used for shooting an ultraviolet light image of the insulator and analyzing a discharge defect of the insulator by carrying the ultraviolet light measurement device with the manual hand and the unmanned aerial vehicle, and the defect degree evaluation and positioning module is used for evaluating and positioning the defect severity degree according to detection and analysis results of the visible light, the infrared light and the ultraviolet light in combination with a generation mechanism and.
- 8. The kind of insulator defect detecting terminal equipment for transmission lines according to claim 7, further comprising a measuring point selecting module for selecting measuring points on the ground and in the air.
- 9. The kinds of insulator defect detection terminal equipment for the power transmission line according to claim 7, wherein the unmanned aerial vehicle carrying visible light, infrared light or ultraviolet light detection equipment has a carrying capacity of more than 3kg, a cruising capacity after load is more than 15min, realizes hovering in the air, is provided with a holder carrying visible light, infrared light and ultraviolet light, is connected with external wireless communication, and can be adjusted in horizontal or vertical angle by a person viewing a shot picture on the ground.
- 10. The kind of insulator defect detecting terminal equipment for power transmission lines of claim 7, further comprising a memory for storing said program modules and a processor for retrieving the program modules from the memory and executing the steps of the method of any of claims 1-6, wherein the steps of the method are as set forth in any of claims .
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