CN112699897B - Method and system for splicing iron cap temperature curves of extra-high voltage porcelain insulator strings - Google Patents
Method and system for splicing iron cap temperature curves of extra-high voltage porcelain insulator strings Download PDFInfo
- Publication number
- CN112699897B CN112699897B CN202011403745.4A CN202011403745A CN112699897B CN 112699897 B CN112699897 B CN 112699897B CN 202011403745 A CN202011403745 A CN 202011403745A CN 112699897 B CN112699897 B CN 112699897B
- Authority
- CN
- China
- Prior art keywords
- porcelain insulator
- temperature
- insulator
- temperature curve
- curve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 431
- 229910052573 porcelain Inorganic materials 0.000 title claims abstract description 310
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 64
- 238000000034 method Methods 0.000 title claims abstract description 45
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 32
- 230000004927 fusion Effects 0.000 claims abstract description 53
- 230000011218 segmentation Effects 0.000 claims abstract description 19
- 238000001514 detection method Methods 0.000 claims description 16
- 238000004364 calculation method Methods 0.000 claims description 12
- 230000008569 process Effects 0.000 claims description 10
- 238000004422 calculation algorithm Methods 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 8
- 230000010354 integration Effects 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000004590 computer program Methods 0.000 description 7
- 238000009826 distribution Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 238000001931 thermography Methods 0.000 description 2
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/40—Extraction of image or video features
- G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/25—Fusion techniques
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T3/00—Geometric image transformations in the plane of the image
- G06T3/40—Scaling of whole images or parts thereof, e.g. expanding or contracting
- G06T3/4038—Image mosaicing, e.g. composing plane images from plane sub-images
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Data Mining & Analysis (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Life Sciences & Earth Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Multimedia (AREA)
- Artificial Intelligence (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Bioinformatics & Computational Biology (AREA)
- Evolutionary Biology (AREA)
- Evolutionary Computation (AREA)
- General Engineering & Computer Science (AREA)
- Insulators (AREA)
Abstract
The invention provides a splicing method and a splicing system for a temperature curve of an iron cap of an extra-high voltage porcelain insulator string. The method comprises the following steps: acquiring a segmented infrared image containing characteristics of a lead end and a grounding end of a porcelain insulator string; respectively extracting the iron cap temperature of each porcelain insulator in each section of infrared image, and drawing a sectional temperature curve in each section of infrared image; finding out the corresponding insulator sheet of each porcelain insulator segment temperature curve in the porcelain insulator string; fusing temperature curves of the same porcelain insulator pieces corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate a fusion temperature curve; splicing the temperature curves of the different porcelain insulators corresponding to the sectional temperature curves of the porcelain insulators in different sections; and fusing the fusion temperature curve and the splicing temperature curve into a complete porcelain insulator string temperature curve. The invention solves the problem that the external thermal image map of Shan Zhanggong cannot contain the whole string of characteristics due to overlong string body of the extra-high voltage large-tonnage porcelain insulator.
Description
Technical Field
The invention relates to the technical field of ultra-high voltage large-tonnage porcelain insulator detection, in particular to a method and a system for splicing iron cap temperature curves for infrared characteristic analysis of an ultra-high voltage large-tonnage long-string porcelain insulator.
Background
Porcelain insulators are common electrical insulation equipment, and are widely applied to transmission lines and substations of various voltage classes. In the long-term operation process, the insulator string is influenced by a plurality of complex factors such as strong electromechanical load, acid rain, strong wind, icing, ultraviolet rays, pollution, rapid temperature and humidity change and the like, and the insulating performance and the mechanical performance of the insulator can be gradually reduced, so that the deterioration fault of the zero value or low value insulator is generated. The existence of the low zero value insulator can possibly cause phenomena such as partial discharge, flashover, even burst, string drop and the like, and forms a great threat to the safe and stable operation of the power grid.
Along with the continuous development of the ultra-high voltage transmission and transformation technology in China, the application of the ultra-high voltage large-tonnage porcelain insulator in a power system is more and more common. Compared with the conventional high-voltage insulator, the extra-high-voltage large-tonnage insulator string is longer, the installation height is larger, the insulation margin is smaller, and the electric field distribution is more complex. Therefore, the degradation detection of the ultra-high voltage large tonnage porcelain insulator is attracting more and more attention.
At present, porcelain insulator low zero value detection methods are mainly divided into two types. One type is the electrical quantity detection method: mainly comprises a spark gap method, an insulation resistance method, a voltage distribution method, a leakage current method and the like. When the method is used for detection, the manual operation difficulty is high, the risk is high, the efficiency is low, and false detection and omission detection are easy to cause. Another class is non-electrical detection methods: mainly comprises an infrared thermal imaging method, an ultraviolet imaging method, an ultrasonic method and the like. Among them, the infrared thermal imaging method is the most commonly used non-contact type charged detection method. The principle is that the difference of temperature rise characteristics of the deteriorated insulator iron cap is compared with that of the adjacent normal insulator iron cap to judge the difference of temperature of the deteriorated insulator iron cap (also called as iron cap temperature difference threshold method). In the field operation, maintenance and repair process, the positive and negative 1K temperature difference at the iron cap specified in the power industry standard DL/T664-2016 'infrared diagnosis application Specification of electrified equipment' is commonly used as the basis for judging the infrared detection of the low-value and zero-value insulators at present.
When an infrared thermal imager with a standard lens is used for shooting an extra-high voltage long string of insulators, the whole string of insulators is difficult to completely and clearly shoot in one infrared image due to the fact that the distance is far away, and the problem that Shan Zhanggong external images cannot contain the whole string of characteristics exists; if a long focus lens is adopted, even if the whole string of insulators can be shot in the same image, enough image resolution can not be ensured, so that the infrared characteristic extraction difficulty is extremely high, and the insulator degradation diagnosis and analysis are not facilitated.
Disclosure of Invention
The invention aims to provide a method and a system for splicing temperature curves of iron caps of extra-high voltage porcelain insulator strings for infrared characteristic analysis of extra-high voltage large-tonnage long-string porcelain insulators, and the method can obtain the whole-string temperature characteristics of the insulator strings through segmented infrared images comprising characteristics of lead ends and grounding ends of porcelain insulators of the same string, so that the problem that the outer images of Shan Zhanggong cannot contain the whole-string characteristics is solved.
In order to achieve the technical aim, the technical scheme provided by the invention is that the method for splicing the temperature curve of the iron cap of the extra-high voltage porcelain insulator string is characterized by comprising the following specific steps:
step one: acquiring segmented infrared images of the same porcelain insulator string;
step two: respectively extracting the iron cap temperature of each porcelain insulator in each section of infrared image, and drawing a sectional temperature curve of each porcelain insulator in each section of infrared image;
step three: finding out the corresponding insulator sheet of each porcelain insulator segment temperature curve in the porcelain insulator string;
step four: fusing the overlapping part temperature curves of the same porcelain insulator sheets corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate a fused temperature curve;
step five: splicing non-overlapping part temperature curves of different porcelain insulators corresponding to different section porcelain insulator segmentation temperature curves;
step six: and fusing the fusion temperature curve and the spliced temperature curve into a complete porcelain insulator string temperature curve.
The invention further adopts the technical scheme that: : the first step is to obtain two segmented infrared images of the same porcelain insulator string, wherein one segmented infrared image comprises a lead end characteristic of the porcelain insulator string, the other segmented infrared image comprises a ground end characteristic of the Zhang Baohan porcelain insulator string, and porcelain insulator sheets contained in the segmented infrared images of the two porcelain insulator strings are partially overlapped. .
The invention has the preferable technical scheme that: : and in the second step, the temperature of the iron cap of the porcelain insulator in each section of infrared image is extracted by utilizing a machine vision technology or a manual detection method, and a sectional temperature curve of the porcelain insulator in each section of infrared image is drawn.
The invention further adopts the technical scheme that: porcelain insulator segment temperature curve T of segment infrared image of two segments of same porcelain insulator string 1 And T 2 The temperature curves of the overlapping parts corresponding to the same porcelain insulator sheets are fused, and the specific steps of the fusion are as followsThe following steps:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (1) 1 And T 2 Number n of corresponding identical insulator sheets p The calculation formula is as follows:
n p ＝n 1 +n 2 -n①
wherein n is 1 、n 2 The number of the insulators in the two infrared images containing the lead end characteristics of the porcelain insulator string and the ground end characteristics of the porcelain insulator string is respectively n, and the total number of the insulators of the porcelain insulator string is n;
(2) Calculating a sectional temperature curve T of the porcelain insulator according to formulas (2) and (3) 1 And T 2 Corresponding n p Fusion temperature T of each insulator in the same insulators ci And draw n p Fusion temperature curve T of same insulator c ：
Wherein T is 1,i N is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 1 Temperature value of (a);
T 2,i n is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 2 Temperature value of (a);
η i as a weighting coefficient, eta is an edge attenuation factor;
n p segmenting a temperature curve T for a porcelain insulator 1 And T 2 The number of corresponding identical insulator sheets;
i is overlapped n p The order of the porcelain insulator sheets to be calculated in the same insulator sheets.
The invention further adopts the technical scheme that: for two sections at the same timeSegment temperature curve T of porcelain insulator of segment infrared image of porcelain insulator string 1 And T 2 The non-overlapping part temperature curves of the corresponding non-identical porcelain insulator sheets are spliced, and the splicing process is as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (4) and a formula (5) 1 And T 2 Is the offset coefficient d of (2) 1 And d 2 The calculation formula is as follows:
wherein T is c1 The value of the 1 st porcelain insulator in the fusion temperature curve is taken; n is n 1 The number of porcelain insulator pieces contained in the sectional temperature curve S1 for the porcelain insulator;segmenting a temperature curve T for a porcelain insulator 1 The value of the first porcelain insulator positioned in the overlapping area; />The value of the last porcelain insulator in the fusion temperature curve is +.>Segmenting a temperature curve T for a porcelain insulator 2 The last porcelain insulator positioned in the overlapping area takes value; n is n p Segmenting a temperature curve T for a porcelain insulator 1 And T 2 Number n of corresponding identical insulator sheets p ；
(2) Calculating a ceramic insulator segment temperature curve T by the following offset formulas (6) and (7) 1 And T 2 Temperature value T of non-overlapping portion of corresponding non-identical insulator sheets 1’ And T 2’ Correcting to obtain a sectional temperature curve T of the porcelain insulator 1 And T 2 Temperature offset value T of non-overlapping portion d1 And T d2 And draw out porcelain insulation
Edge subsection temperature curve T 1 And T 2 A temperature offset curve for the non-overlapping portion;
T d1 ＝T 1' +d 1 ⑥
T d2 ＝T 2' +d 2 ⑦
wherein: d, d 1 And d 2 Sectional temperature curves T of porcelain insulators respectively 1 And T 2 Is a coefficient of offset;
T 1’ and T 2’ Respectively two sectional temperature curves T 1 And T 2 The temperature values of the corresponding different insulator sheets;
(3) According to the fusion temperature curve T c Sectional temperature curve T of porcelain insulator 1 Is a shift curve T of (2) d1 And porcelain insulator segment temperature curve T 2 Is a shift curve T of (2) d2 The three groups of data are spliced through a formula (8), and complete porcelain insulator string temperature curve data T are obtained:
T＝[T d1 ,T c ,T d2 ] ⑧
T c sectional temperature curve T of porcelain insulator 1 And T 2 Is a fusion curve of (2);
T d1 sectional temperature curve T of porcelain insulator 1 Is a curve of the offset of (2);
T d2 sectional temperature curve T of porcelain insulator 2 Is a curve of the offset of (2).
The invention has the preferable technical scheme that: the machine vision technique includes an image recognition algorithm or a feature extraction algorithm method.
In order to achieve the technical purpose, the invention also provides a splicing system for the temperature curve of the iron cap of the extra-high voltage porcelain insulator string, which is characterized by comprising the following components:
the segmented infrared image acquisition module is used for acquiring segmented infrared images of the same porcelain insulator string;
the temperature extraction and curve drawing module is used for preprocessing each section of collected infrared image, extracting the cap temperature of each section of infrared image and drawing a ceramic insulator segmentation temperature curve in each section of infrared image;
the insulator sheet searching module is used for searching the corresponding insulator sheet of each porcelain insulator sectional temperature curve in the porcelain insulator string;
the curve fusion module is used for fusing the temperature curves of the overlapping parts of the same porcelain insulator sheets corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate fusion temperature curves;
the curve splicing module is used for splicing non-overlapping part temperature curves of the different porcelain insulators corresponding to the different porcelain insulator segmentation temperature curves;
and the integration module is used for fusing the fusion temperature curve and the spliced temperature curve into a complete porcelain insulator string temperature curve.
The invention further adopts the technical scheme that: the segmented infrared image acquisition module is used for acquiring two segmented infrared images of the same porcelain insulator string, wherein one segmented infrared image comprises the lead end characteristic of the porcelain insulator string, and the other segmented infrared image acquisition module comprises the ground end characteristic of the Zhang Baohan porcelain insulator string.
The invention further adopts the technical scheme that: the curve fusion module segments a temperature curve T of the porcelain insulator of the segmented infrared image of two segments of the same porcelain insulator string 1 And T 2 The temperature curves of the overlapping parts corresponding to the same porcelain insulator sheet are fused, and the specific steps of the fusion are as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (1) 1 And T 2 Number n of corresponding identical insulator sheets p The calculation formula is as follows:
n p ＝n 1 +n 2 -n①
wherein n is 1 、n 2 The number of the insulators in the two infrared images containing the lead end characteristics of the porcelain insulator string and the ground end characteristics of the porcelain insulator string is respectively n, and the total number of the insulators of the porcelain insulator string is n;
(2) Calculating the segments of the porcelain insulator according to formulas (2) and (3)Temperature curve T 1 And T 2 Corresponding n p Fusion temperature T of each insulator in the same insulators ci And draw n p Fusion temperature curve T of same insulator c ：
Wherein T is 1,i N is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 1 Temperature value of (a);
T 2,i n is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 2 Temperature value of (a);
η i as a weighting coefficient, eta is an edge attenuation factor;
n p segmenting a temperature curve T for a porcelain insulator 1 And T 2 The number of corresponding identical insulator sheets;
i is overlapped n p The order of the porcelain insulator sheets to be calculated in the same insulator sheets.
The invention further adopts the technical scheme that: the curve splicing module is used for segmenting a temperature curve T of the porcelain insulator of the segmented infrared image of two segments of the same porcelain insulator string 1 And T 2 The non-overlapping part temperature curves of the corresponding non-identical porcelain insulator sheets are spliced, and the splicing process is as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (4) and a formula (5) 1 And T 2 Is the offset coefficient d of (2) 1 And d 2 The calculation formula is as follows:
wherein T is c1 The value of the 1 st porcelain insulator in the fusion temperature curve is taken; n is n 1 The number of porcelain insulator pieces contained in the sectional temperature curve S1 for the porcelain insulator;segmenting a temperature curve T for a porcelain insulator 1 The value of the first porcelain insulator positioned in the overlapping area; />The value of the last porcelain insulator in the fusion temperature curve is +.>Segmenting a temperature curve T for a porcelain insulator 2 The last porcelain insulator positioned in the overlapping area takes value; n is n p Segmenting a temperature curve T for a porcelain insulator 1 And T 2 Number n of corresponding identical insulator sheets p ；
(2) Calculating a ceramic insulator segment temperature curve T by the following offset formulas (6) and (7) 1 And T 2 Temperature value T of non-overlapping portion of corresponding non-identical insulator sheets 1’ And T 2’ Correcting to obtain a sectional temperature curve T of the porcelain insulator 1 And T 2 Temperature offset value T of non-overlapping portion d1 And T d2 And draw a sectional temperature curve T of the porcelain insulator 1 And T 2 A temperature offset curve for the non-overlapping portion;
T d1 ＝T 1' +d 1 ⑥
T d2 ＝T 2' +d 2 ⑦
wherein: d, d 1 And d 2 Sectional temperature curves T of porcelain insulators respectively 1 And T 2 Is a coefficient of offset;
T 1’ and T 2’ Respectively two sectional temperature curves T 1 And T 2 The temperature of the corresponding non-identical insulator sheetsA value;
(3) According to the fusion temperature curve T c Sectional temperature curve T of porcelain insulator 1 Is a shift curve T of (2) d1 And porcelain insulator segment temperature curve T 2 Is a shift curve T of (2) d2 The three groups of data are spliced through a formula (8), and complete porcelain insulator string temperature curve data T are obtained:
T＝[T d1 ,T c ,T d2 ] ⑧
T c sectional temperature curve T of porcelain insulator 1 And T 2 Is a fusion curve of (2);
T d1 sectional temperature curve T of porcelain insulator 1 Is a curve of the offset of (2);
T d2 sectional temperature curve T of porcelain insulator 2 Is a curve of the offset of (2).
Compared with the existing infrared detection technology of the insulator with the voltage class of 220kV and below, the infrared detection method creatively provides algorithms such as multi-graph splicing and data fusion, can effectively solve the problem that the external thermal image map of Shan Zhanggong cannot contain the whole string of characteristics due to the overlong string of the extra-high-voltage large-tonnage porcelain insulator, and has higher technical advancement and wide applicability.
Drawings
FIG. 1 is a flow chart of the method of the present invention;
FIG. 2 is a system block diagram of the present invention;
FIGS. 3 and 4 are schematic diagrams illustrating a two-stage temperature curve splicing process in the embodiment;
FIG. 5 is a segment temperature curve T of a porcelain insulator in two infrared images in an embodiment 1 And T 2 ；
Fig. 6 is a graph of the temperature profile of a complete porcelain insulator string with the splice completed in the example.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, the method for splicing the iron cap temperature curve of the extra-high voltage porcelain insulator string provided by the invention specifically comprises the following steps:
step one: acquiring a segmented infrared image containing characteristics of a lead end of the porcelain insulator string and a grounding end of the porcelain insulator string;
step two: respectively extracting the iron cap temperature of each porcelain insulator in each section of infrared image, and drawing a sectional temperature curve of each porcelain insulator in each section of infrared image;
step three: finding out the corresponding insulator sheet of each porcelain insulator segment temperature curve in the porcelain insulator string;
step four: fusing the overlapping part temperature curves of the same porcelain insulator sheets corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate a fused temperature curve;
step four: splicing non-overlapping part temperature curves of different porcelain insulators corresponding to different section porcelain insulator segmentation temperature curves;
step five: and fusing the fusion temperature curve and the spliced temperature curve into a complete porcelain insulator string temperature curve.
The method for splicing the iron cap temperature curve of the extra-high voltage porcelain insulator string in the embodiment comprises the steps of splicing the iron cap temperature curve of the extra-high voltage porcelain insulator string by two segmented infrared images of the same porcelain insulator string, wherein one of the two segmented infrared images comprises the lead end characteristic of the porcelain insulator string, the other one of the two segmented infrared images comprises the ground end characteristic of the Zhang Baohan porcelain insulator string, the number of porcelain insulator sheets contained in the segmented infrared images of the two porcelain insulator strings partially coincides, and all porcelain insulator sheets contained in the segmented infrared images of the two porcelain insulator strings; extracting the iron cap temperature of each porcelain insulator in the two sections of infrared images respectively by using a machine vision technology, and drawing a segmentation temperature curve T of the porcelain insulator in the two sections of infrared images 1 And T 2 The method comprises the steps of carrying out a first treatment on the surface of the The infrared image is extractedThe machine vision technology of the insulator temperature characteristic curve comprises an image recognition algorithm, a characteristic extraction algorithm or a manual detection method. The specific process of fusing and splicing the two sections of sectional temperature curves of the porcelain insulator is as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (1) 1 And T 2 Number n of corresponding identical insulator sheets p The calculation formula is as follows:
n p ＝n 1 +n 2 -n①
wherein n is 1 、n 2 The number of the insulators in the two infrared images containing the lead end characteristics of the porcelain insulator string and the ground end characteristics of the porcelain insulator string is respectively n, and the total number of the insulators of the porcelain insulator string is n;
(2) Calculating a sectional temperature curve T of the porcelain insulator according to formulas (2) and (3) 1 And T 2 Corresponding n p Fusion temperature T of each insulator in the same insulators ci And draw n p Fusion temperature curve T of same insulator c ：
Wherein T is 1,i N is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 1 Temperature value of (a);
T 2,i n is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 2 Temperature value of (a);
η i as a weighting coefficient, eta is an edge attenuation factor;
n p segmenting a temperature curve T for a porcelain insulator 1 And T 2 The number of corresponding identical insulator sheets;
i is overlapped n p The order of the porcelain insulator sheets to be calculated in the same insulator sheets.
(3) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (4) and a formula (5) 1 And T 2 Is the offset coefficient d of (2) 1 And d 2 The calculation formula is as follows:
wherein T is c1 The value of the 1 st porcelain insulator in the fusion temperature curve is taken; n is n 1 The number of porcelain insulator pieces contained in the sectional temperature curve S1 for the porcelain insulator;segmenting a temperature curve T for a porcelain insulator 1 The value of the first porcelain insulator positioned in the overlapping area; />The value of the last porcelain insulator in the fusion temperature curve is +.>Segmenting a temperature curve T for a porcelain insulator 2 The last porcelain insulator positioned in the overlapping area takes value; n is n p Segmenting a temperature curve T for a porcelain insulator 1 And T 2 Number n of corresponding identical insulator sheets p ；
(4) Calculating a ceramic insulator segment temperature curve T by the following offset formulas (6) and (7) 1 And T 2 Temperature value T of non-overlapping portion of corresponding non-identical insulator sheets 1’ And T 2’ Correcting to obtain a sectional temperature curve T of the porcelain insulator 1 And T 2 Temperature offset value T of non-overlapping portion d1 And T d2 And draw a sectional temperature curve T of the porcelain insulator 1 And T 2 A temperature offset curve for the non-overlapping portion;
T d1 ＝T 1' +d 1 ⑥
T d2 ＝T 2' +d 2 ⑦
wherein: d, d 1 And d 2 Sectional temperature curves T of porcelain insulators respectively 1 And T 2 Is a coefficient of offset;
T 1’ and T 2’ Respectively two sectional temperature curves T 1 And T 2 The temperature values of the corresponding different insulator sheets;
(5) According to the fusion temperature curve T c Sectional temperature curve T of porcelain insulator 1 Is a shift curve T of (2) d1 And porcelain insulator segment temperature curve T 2 Is a shift curve T of (2) d2 The three groups of data are spliced through a formula (8), and complete porcelain insulator string temperature curve data T are obtained:
T＝[T d1 ,T c ,T d2 ] ⑧
T c sectional temperature curve T of porcelain insulator 1 And T 2 Is a fusion curve of (2);
T d1 sectional temperature curve T of porcelain insulator 1 Is a curve of the offset of (2);
T d2 sectional temperature curve T of porcelain insulator 2 Is a curve of the offset of (2).
As shown in fig. 2, the system for splicing the temperature curve of the iron cap of the extra-high voltage porcelain insulator string provided by the invention is characterized in that the system comprises:
the segmented infrared image acquisition module is used for acquiring segmented infrared images containing characteristics of a lead end of the porcelain insulator string and a grounding end of the porcelain insulator string;
the temperature extraction and curve drawing module is used for preprocessing each section of collected infrared image, extracting the cap temperature of each section of infrared image and drawing a ceramic insulator segmentation temperature curve in each section of infrared image;
the insulator sheet searching module is used for searching the corresponding insulator sheet of each porcelain insulator sectional temperature curve in the porcelain insulator string;
the curve fusion module is used for fusing the temperature curves of the overlapping parts of the same porcelain insulator sheets corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate fusion temperature curves;
the curve splicing module is used for splicing non-overlapping part temperature curves of the different porcelain insulators corresponding to the different porcelain insulator segmentation temperature curves;
and the integration module is used for fusing the fusion temperature curve and the spliced temperature curve into a complete porcelain insulator string temperature curve.
The temperature curve splicing method in the invention is further described below with reference to a specific embodiment, in which the porcelain insulator string is a 1000kV transmission line insulator string, the insulator string includes 54 porcelain insulators of the same type, and since the insulator string is an extra-high voltage large tonnage long string porcelain insulator, all porcelain insulator characteristics cannot be contained in the same infrared image, in order to obtain a complete porcelain insulator string temperature curve through two different sections of infrared images, the splicing method in the invention is adopted for splicing, and the specific splicing process is as shown in fig. 3 and 4, and the specific steps are as follows:
(1) Acquiring two infrared thermal image maps which respectively contain the head characteristic and the tail characteristic of the porcelain insulator string and have the number of pieces exceeding 4 of the total pieces of the insulator string through the same porcelain insulator string;
(2) Extracting the temperature of the iron cap of each porcelain insulator in the two sections of infrared images by using a machine vision technology, and drawing a temperature distribution curve T of the iron cap of the porcelain insulator in the two sections of infrared images of the same string of insulators 1 And T 2 Two-section porcelain insulator sectional temperature curve T 1 And T 2 As shown in particular in fig. 5; the machine vision technology for extracting the insulator temperature characteristic curve in the infrared image comprises an image recognition algorithm, a characteristic extraction algorithm or a manual detection method;
(3) The insulator sheet corresponding to each porcelain insulator sectional temperature curve in the porcelain insulator string in FIG. 5 is then found out corresponding to the two sectional temperature curvesThe temperature values of the overlapping parts of the same porcelain insulator sheets, wherein the temperature curve T is segmented 1 The data in the overlap region are:
27.198
27.248
27.274
27.242
27.33
27.348
27.348
27.442
sectional temperature curve T 2 The data in the overlap region are:
26.782
26.624
26.648
26.548
26.606
26.538
26.608
26.396
(4) Calculating a sectional temperature curve T of the porcelain insulator according to formulas (2) and (3) 1 And T 2 Corresponding n p Fusion temperature T of each insulator in the same insulators ci ：
Taking two groups of data in the step (3) to calculate through formulas (2) and (3) to obtain T ci The values are as follows:
26.99
26.936
26.961
26.895
26.968
26.943
26.978
26.919
in the above calculation process, the attenuation factor is set to 1, each η i The values are all equal to 1; and drawing a fusion temperature curve T according to the calculated value c ；
(5) The calculated values are brought into the formula (4) and the formula (5) to calculate the sectional temperature curve T of the porcelain insulator 1 And T 2 Is the offset coefficient d of (2) 1 And d 2 The calculation formula is as follows:
calculated d 1 ＝0.208；d 2 ＝0.523；
Sectional temperature curve T of porcelain insulator 1 The curve data in the non-overlapping region are as follows:
27.7
27.534
27.36
27.202
27.158
27.25
27.21
27.152
27.15
27.168
27.114
27.02
27.152
27.134
27.044
26.988
27.038
27.056
27.17
27.274
27.212
sectional temperature curve T of porcelain insulator 2 The curve data in the non-overlapping region are as follows:
26.274
26.292
26.224
26.286
26.25
26.164
26.114
26.076
26.076
26.198
26.174
26.198
26.25
26.34
26.43
26.504
26.434
26.632
26.608
26.66
26.736
26.658
26.728
26.816
26.65
the data are added to the corresponding offset values respectively to obtain an offset curve:
(6) Calculating a ceramic insulator segment temperature curve T by the following offset formulas (6) and (7) 1 And T 2 Temperature value T of non-overlapping portion of corresponding non-identical insulator sheets 1’ And T 2’ Correcting to obtain a sectional temperature curve T of the porcelain insulator 1 And T 2 Temperature offset value T of non-overlapping portion d1 And T d2 ，
T d1 ＝T 1' +d 1 ⑥
T d2 ＝T 2' +d 2 ⑦
Sectional temperature curve T of porcelain insulator 1 Offset curve values in non-overlapping regions:
T d1 ：
27.492
27.326
27.152
26.994
26.95
27.042
27.002
26.944
26.942
26.96
26.906
26.812
26.944
26.926
26.836
26.78
26.83
26.848
26.962
27.066
27.004
sectional temperature curve T of porcelain insulator 1 Offset curve values in non-overlapping regions:
T d2 ：
26.797
26.815
26.747
26.809
26.773
26.687
26.637
26.599
26.599
26.721
26.697
26.721
26.773
26.863
26.953
27.027
26.957
27.155
27.131
27.183
27.259
27.181
27.251
27.339
27.173
(7) According to the fusion temperature curve T in the step (4) c The value of (2), and the offset value T in step (6) d1 ，T d2 Pressing three groups of data into a formula T= [ T ] d1 ,T c ,T d2 ]And splicing to form a complete porcelain insulator string whole string iron cap temperature distribution curve, as shown in fig. 6.
The edge attenuation factor is formed by the fact that the characteristic is close to the edge of the image, and the value reliability of the characteristic is reduced. In both infrared thermographs, the insulator string features continued to the image edges. The reasonable arrangement of the edge attenuation factors can give consideration to the characteristic information of the overlapping area of the two infrared images, so that the temperature curves after fusion and splicing can be overlapped to be smooth and excessive without losing the characteristics.
According to the invention, the whole string of temperature characteristics of the insulator string are obtained through the partial infrared characteristic images of the two porcelain insulators which are in the same string, so that the problem that the outer image of Shan Zhanggong cannot contain the whole string of characteristics is solved.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks. Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (6)
1. The method for splicing the temperature curve of the iron cap of the extra-high voltage porcelain insulator string is characterized by comprising the following steps of:
step one: acquiring segmented infrared images of the same porcelain insulator string; the method comprises the steps that the segmented infrared images of the same porcelain insulator string are obtained, one porcelain insulator string comprises lead end characteristics of the porcelain insulator string, the other Zhang Baohan porcelain insulator string comprises grounding end characteristics, and porcelain insulator sheets contained in the segmented infrared images of the two porcelain insulator strings are partially overlapped;
step two: respectively extracting the iron cap temperature of each porcelain insulator in each section of infrared image, and drawing a sectional temperature curve of each porcelain insulator in each section of infrared image;
step three: finding out the corresponding insulator sheet of each porcelain insulator segment temperature curve in the porcelain insulator string;
step four: fusing the overlapping part temperature curves of the same porcelain insulator sheets corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate a fused temperature curve; segmented infrared for two segments of identical porcelain insulator stringsImage porcelain insulator sectional temperature curve T 1 And T 2 The specific steps of fusing the temperature curves of the overlapping parts corresponding to the same porcelain insulator sheet are as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (1) 1 And T 2 Number n of corresponding identical insulator sheets p The calculation formula is as follows:
n p ＝n 1 +n 2 -n ①
wherein n is 1 、n 2 The number of the insulators in the two infrared images containing the lead end characteristics of the porcelain insulator string and the ground end characteristics of the porcelain insulator string is respectively n, and the total number of the insulators of the porcelain insulator string is n;
(2) Calculating a sectional temperature curve T of the porcelain insulator according to formulas (2) and (3) 1 And T 2 Corresponding n p Fusion temperature T of each insulator in the same insulators ci And draw n p Fusion temperature curve T of same insulator c ：
Wherein T is 1,i N is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 1 Temperature value of (a);
T 2,i n is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 2 Temperature value of (a);
η i as a weighting coefficient, eta is an edge attenuation factor;
n p segmenting a temperature curve T for a porcelain insulator 1 And T 2 The number of corresponding identical insulator sheets;
i is overlapped n p The sequence of the porcelain insulator sheets to be calculated in the same insulator sheets;
step five: splicing non-overlapping part temperature curves of different porcelain insulators corresponding to different section porcelain insulator segmentation temperature curves;
step six: and fusing the fusion temperature curve and the spliced temperature curve into a complete porcelain insulator string temperature curve.
2. The method for splicing the iron cap temperature curve of the extra-high voltage porcelain insulator string, which is disclosed in claim 1, is characterized in that: and in the second step, the temperature of the iron cap of the porcelain insulator in each section of infrared image is extracted by utilizing a machine vision technology or a manual detection method, and a sectional temperature curve of the porcelain insulator in each section of infrared image is drawn.
3. The method for splicing the iron cap temperature curves of the extra-high voltage porcelain insulator strings according to claim 1 is characterized in that the porcelain insulator segmentation temperature curve T of the segmentation infrared image of two segments of the same porcelain insulator string 1 And T 2 The non-overlapping part temperature curves of the corresponding non-identical porcelain insulator sheets are spliced, and the splicing process is as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (4) and a formula (5) 1 And T 2 Is the offset coefficient d of (2) 1 And d 2 The calculation formula is as follows:
wherein T is c1 The value of the 1 st porcelain insulator in the fusion temperature curve is taken; n is n 1 The number of porcelain insulator pieces contained in the sectional temperature curve S1 for the porcelain insulator;segmenting a temperature curve T for a porcelain insulator 1 The value of the first porcelain insulator positioned in the overlapping area; />The value of the last porcelain insulator in the fusion temperature curve is +.>Segmenting a temperature curve T for a porcelain insulator 2 The last porcelain insulator positioned in the overlapping area takes value; n is n p Segmenting a temperature curve T for a porcelain insulator 1 And T 2 Number n of corresponding identical insulator sheets p ；
(2) Calculating a ceramic insulator segment temperature curve T by the following offset formulas (6) and (7) 1 And T 2 Temperature value T of non-overlapping portion of corresponding non-identical insulator sheets 1’ And T 2’ Correcting to obtain a sectional temperature curve T of the porcelain insulator 1 And T 2 Temperature offset value T of non-overlapping portion d1 And T d2 And draw a sectional temperature curve T of the porcelain insulator 1 And T 2 A temperature offset curve for the non-overlapping portion;
T d1 ＝T 1' +d 1 ⑥
T d2 ＝T 2' +d 2 ⑦
wherein: d, d 1 And d 2 Sectional temperature curves T of porcelain insulators respectively 1 And T 2 Is a coefficient of offset;
T 1’ and T 2’ Respectively two sectional temperature curves T 1 And T 2 The temperature values of the corresponding different insulator sheets;
(3) According to the fusion temperature curve T c Sectional temperature curve T of porcelain insulator 1 Is a shift curve T of (2) d1 And porcelain insulator segment temperature curve T 2 Is a shift curve T of (2) d2 The three groups of data are spliced through a formula (8), and complete porcelain insulator string temperature curve data T are obtained:
T＝[T d1 ,T c ,T d2 ] ⑧
T c sectional temperature curve T of porcelain insulator 1 And T 2 Is a fusion curve of (2);
T d1 sectional temperature curve T of porcelain insulator 1 Is a curve of the offset of (2);
T d2 sectional temperature curve T of porcelain insulator 2 Is a curve of the offset of (2).
4. The method for splicing the iron cap temperature curve of the extra-high voltage porcelain insulator string, which is disclosed in claim 2, is characterized in that: the machine vision technique includes an image recognition algorithm or a feature extraction algorithm method.
5. An extra-high voltage porcelain insulator chain iron cap temperature curve splicing system, which is characterized in that the splicing system comprises:
the segmented infrared image acquisition module is used for acquiring segmented infrared images of the same porcelain insulator string; the segmented infrared image acquisition module is used for acquiring two segmented infrared images of the same porcelain insulator string, wherein one segmented infrared image comprises the lead end characteristic of the porcelain insulator string and the other segmented infrared image comprises the ground end characteristic of the Zhang Baohan porcelain insulator string;
the temperature extraction and curve drawing module is used for preprocessing each section of collected infrared image, extracting the cap temperature of each section of infrared image and drawing a ceramic insulator segmentation temperature curve in each section of infrared image;
the insulator sheet searching module is used for searching the corresponding insulator sheet of each porcelain insulator sectional temperature curve in the porcelain insulator string;
the curve fusion module is used for fusing the temperature curves of the overlapping parts of the same porcelain insulator sheets corresponding to the segmentation temperature curves of the porcelain insulators in different segments to generate fusion temperature curves; the curve fusion module segments a temperature curve T of the porcelain insulator of the segmented infrared image of two segments of the same porcelain insulator string 1 And T 2 The temperature curves of the overlapping parts corresponding to the same porcelain insulator sheets are fused, and the fused parts haveThe method comprises the following steps:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (1) 1 And T 2 Number n of corresponding identical insulator sheets p The calculation formula is as follows:
n p ＝n 1 +n 2 -n①
wherein n is 1 、n 2 The number of the insulators in the two infrared images containing the lead end characteristics of the porcelain insulator string and the ground end characteristics of the porcelain insulator string is respectively n, and the total number of the insulators of the porcelain insulator string is n;
(2) Calculating a sectional temperature curve T of the porcelain insulator according to formulas (2) and (3) 1 And T 2 Corresponding n p Fusion temperature T of each insulator in the same insulators ci And draw n p Fusion temperature curve T of same insulator c ：
Wherein T is 1,i N is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 1 Temperature value of (a);
T 2,i n is the overlap of p The i-th insulator in the same insulators is in the porcelain insulator subsection temperature curve T 2 Temperature value of (a);
η i as a weighting coefficient, eta is an edge attenuation factor;
n p segmenting a temperature curve T for a porcelain insulator 1 And T 2 The number of corresponding identical insulator sheets;
i is overlapped n p The sequence of the porcelain insulator sheets to be calculated in the same insulator sheets;
the curve splicing module is used for splicing non-overlapping part temperature curves of the different porcelain insulators corresponding to the different porcelain insulator segmentation temperature curves;
and the integration module is used for fusing the fusion temperature curve and the spliced temperature curve into a complete porcelain insulator string temperature curve.
6. The system for splicing temperature curves of iron caps of extra-high voltage porcelain insulator strings according to claim 5, wherein said curve splicing module is used for splicing temperature curves T of porcelain insulator segments of two segments of the same porcelain insulator string with segmented infrared images 1 And T 2 The non-overlapping part temperature curves of the corresponding non-identical porcelain insulator sheets are spliced, and the splicing process is as follows:
(1) Calculating a sectional temperature curve T of the porcelain insulator according to a formula (4) and a formula (5) 1 And T 2 Is the offset coefficient d of (2) 1 And d 2 The calculation formula is as follows:
wherein T is c1 The value of the 1 st porcelain insulator in the fusion temperature curve is taken; n is n 1 The number of porcelain insulator pieces contained in the sectional temperature curve S1 for the porcelain insulator;segmenting a temperature curve T for a porcelain insulator 1 The value of the first porcelain insulator positioned in the overlapping area; />The value of the last porcelain insulator in the fusion temperature curve is +.>Segmenting a temperature curve T for a porcelain insulator 2 The last porcelain in the overlapping regionEdge value; n is n p Segmenting a temperature curve T for a porcelain insulator 1 And T 2 Number n of corresponding identical insulator sheets p ；
(2) Calculating a ceramic insulator segment temperature curve T by the following offset formulas (6) and (7) 1 And T 2 Temperature value T of non-overlapping portion of corresponding non-identical insulator sheets 1’ And T 2’ Correcting to obtain a sectional temperature curve T of the porcelain insulator 1 And T 2 Temperature offset value T of non-overlapping portion d1 And T d2 And draw a sectional temperature curve T of the porcelain insulator 1 And T 2 A temperature offset curve for the non-overlapping portion;
T d1 ＝T 1' +d 1 ⑥
T d2 ＝T 2' +d 2 ⑦
wherein: d, d 1 And d 2 Sectional temperature curves T of porcelain insulators respectively 1 And T 2 Is a coefficient of offset;
T 1’ and T 2’ Respectively two sectional temperature curves T 1 And T 2 The temperature values of the corresponding different insulator sheets;
(3) According to the fusion temperature curve T c Sectional temperature curve T of porcelain insulator 1 Is a shift curve T of (2) d1 And porcelain insulator segment temperature curve T 2 Is a shift curve T of (2) d2 The three groups of data are spliced through a formula (8), and complete porcelain insulator string temperature curve data T are obtained:
T＝[T d1 ,T c ,T d2 ] ⑧
T c sectional temperature curve T of porcelain insulator 1 And T 2 Is a fusion curve of (2);
T d1 sectional temperature curve T of porcelain insulator 1 Is a curve of the offset of (2);
T d2 sectional temperature curve T of porcelain insulator 2 Is a curve of the offset of (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403745.4A CN112699897B (en) | 2020-12-04 | 2020-12-04 | Method and system for splicing iron cap temperature curves of extra-high voltage porcelain insulator strings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403745.4A CN112699897B (en) | 2020-12-04 | 2020-12-04 | Method and system for splicing iron cap temperature curves of extra-high voltage porcelain insulator strings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112699897A CN112699897A (en) | 2021-04-23 |
| CN112699897B true CN112699897B (en) | 2024-04-05 |
Family
ID=75506765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011403745.4A Active CN112699897B (en) | 2020-12-04 | 2020-12-04 | Method and system for splicing iron cap temperature curves of extra-high voltage porcelain insulator strings |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112699897B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116596920B (en) * | 2023-07-12 | 2023-11-07 | 国网江西省电力有限公司电力科学研究院 | Real-time zero measurement method and system for long-string porcelain insulator unmanned aerial vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105279735A (en) * | 2015-11-20 | 2016-01-27 | 沈阳东软医疗系统有限公司 | Fusion method, fusion device and fusion equipment of image splicing |
| WO2017205119A1 (en) * | 2016-05-27 | 2017-11-30 | Microsoft Technology Licensing, Llc | Thermal camera calibration palette |
| CN109142991A (en) * | 2018-07-05 | 2019-01-04 | 国网湖南省电力有限公司电力科学研究院 | A kind of infrared survey zero-temperature coefficient threshold determination method of porcelain insulator based on Burr distribution |
| CN109461176A (en) * | 2018-10-22 | 2019-03-12 | 北京化工大学 | The spectrum method for registering of high spectrum image |
| CN111381134A (en) * | 2020-03-26 | 2020-07-07 | 国网湖北省电力有限公司电力科学研究院 | Infrared zero value diagnosis method and system for porcelain insulator string |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100416172C (en) * | 2007-04-28 | 2008-09-03 | 珠海格力电器股份有限公司 | Method for controlling air conditioner to operate according to custom curve |
-
2020
- 2020-12-04 CN CN202011403745.4A patent/CN112699897B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105279735A (en) * | 2015-11-20 | 2016-01-27 | 沈阳东软医疗系统有限公司 | Fusion method, fusion device and fusion equipment of image splicing |
| WO2017205119A1 (en) * | 2016-05-27 | 2017-11-30 | Microsoft Technology Licensing, Llc | Thermal camera calibration palette |
| CN109142991A (en) * | 2018-07-05 | 2019-01-04 | 国网湖南省电力有限公司电力科学研究院 | A kind of infrared survey zero-temperature coefficient threshold determination method of porcelain insulator based on Burr distribution |
| CN109461176A (en) * | 2018-10-22 | 2019-03-12 | 北京化工大学 | The spectrum method for registering of high spectrum image |
| CN111381134A (en) * | 2020-03-26 | 2020-07-07 | 国网湖北省电力有限公司电力科学研究院 | Infrared zero value diagnosis method and system for porcelain insulator string |
Non-Patent Citations (2)
| Title |
|---|
| 基于红外图像的变压器图像处理方法研究;甘伟焜;中国优秀硕士学位论文全文数据库 信息科技辑;20180715(第07期);全文 * |
| 基于红外检测的劣化瓷绝缘串诊断方法;周学明;黄江林;胡丹晖;毕如玉;王万昆;张耀东;;湖北电力;20200228(第01期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112699897A (en) | 2021-04-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103529362B (en) | Based on insulator identification and the defect diagnostic method of perception | |
| CN108734689B (en) | Method for detecting scattered strands of conducting wires based on region growth | |
| CN105445607B (en) | A kind of electrical equipment fault detection method drawn based on thermoisopleth | |
| Wang et al. | Recognition and drop-off detection of insulator based on aerial image | |
| WO2021190056A1 (en) | Infrared zero value diagnosis method and system for porcelain insulator string | |
| CN111242027B (en) | Unsupervised learning scene feature rapid extraction method fusing semantic information | |
| CN107179479B (en) | Visible light image-based transmission conductor strand scattering defect detection method | |
| CN112699897B (en) | Method and system for splicing iron cap temperature curves of extra-high voltage porcelain insulator strings | |
| CN110267101B (en) | Unmanned aerial vehicle aerial video automatic frame extraction method based on rapid three-dimensional jigsaw | |
| CN105976368A (en) | Insulator positioning method | |
| CN106157323A (en) | The insulator division and extracting method that a kind of dynamic division threshold value and block search combine | |
| CN114463257A (en) | Power equipment infrared image detection method and system based on deep learning | |
| CN112884715A (en) | Composite insulator grading ring inclination fault detection method based on deep learning | |
| CN105528790A (en) | Transmission line small part identification method | |
| CN115205256A (en) | Power transmission line insulator defect detection method and system based on fusion of transfer learning | |
| CN115578352A (en) | Dry-type air-core reactor fault detection method and device based on image recognition | |
| CN113763397A (en) | Composite insulator fault detection method and system | |
| CN112418226B (en) | Method and device for identifying opening and closing states of fisheyes | |
| CN116596920B (en) | Real-time zero measurement method and system for long-string porcelain insulator unmanned aerial vehicle | |
| CN111444857B (en) | Unmanned aerial vehicle inspection data processing method | |
| CN114494186B (en) | Fault detection method for high-voltage power transmission and transformation line electrical equipment | |
| CN106652020B (en) | Model-based tower three-dimensional reconstruction method | |
| Huang et al. | Insulator detection based on deep learning method in aerial images for power line patrol | |
| Lin et al. | Low/Zero Fault Diagnosis of Porcelain Insulator Based on HSV Color Space Image Processing Technology | |
| Zhenyu et al. | Defect diagnosis technology of typical components on transmission line based on Fully Convolutional Network |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |