CN108241107A - A kind of partial discharge of transformer pattern tests system - Google Patents
A kind of partial discharge of transformer pattern tests system Download PDFInfo
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- CN108241107A CN108241107A CN201810046481.8A CN201810046481A CN108241107A CN 108241107 A CN108241107 A CN 108241107A CN 201810046481 A CN201810046481 A CN 201810046481A CN 108241107 A CN108241107 A CN 108241107A
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- image
- described image
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- denoising
- transformer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
Abstract
The present invention provides a kind of partial discharge of transformer pattern test system, utilize image collecting device, partial discharge of transformer pattern to be measured is identified in central processing unit and memory, the image information of image acquisition device partial discharge of transformer to be measured, central processing unit will be compared by the standard picture in image processing apparatus treated image and memory, to identify the shelf depreciation pattern of transformer to be measured, wherein, image processing apparatus includes image enhancement processing module, image denoising processing module, image filtering processing module and picture smooth treatment module, image enhancement processing module, image filtering processing module, image denoising processing module and picture smooth treatment module are sequentially connected.
Description
Technical field
The present invention relates to transformer testing field more particularly to a kind of partial discharge of transformer pattern test systems.
Background technology
With the development of the society, electric system is also rapidly developing, network voltage grade is higher and higher, and coverage area is more next
Wider, the safe and reliable operation of transformer is also more and more important, since transformer is generally all in outdoor, inevitably produces
Phenomena such as raw insulation damages, aging, shelf depreciation can also generate therewith.Shelf depreciation can be accelerated to transformer insulated damage,
Insulation life is reduced, seriously affects the safe operation of equipment.
At present, the detection of partial discharge of transformer still carries out shelf depreciation by ocular estimate and comes with reference to existing experience
Shelf depreciation pattern is carried out, this method has certain subjectivity, lacks scientific and accuracy, while efficiency is low, therefore,
We need a kind of more effectively method to realize partial discharge of transformer pattern.
Invention content
Therefore, in order to overcome the above problem, the present invention provides a kind of partial discharge of transformer pattern test system, utilizes figure
As partial discharge of transformer pattern to be measured is identified in harvester, central processing unit and memory, image collecting device
Acquire the image information of partial discharge of transformer to be measured, central processing unit will pass through image processing apparatus treated image and deposit
Standard picture in reservoir is compared, to identify the shelf depreciation pattern of the transformer to be measured.
A kind of partial discharge of transformer pattern test system according to the present invention, the partial discharge of transformer pattern test
System includes ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory, wherein, it is described ultraviolet
Light microscopic head, described image harvester, described image processing unit, the central processing unit and the memory are sequentially connected,
Transformer to be measured is connected with the ultraviolet lens.
Described image processing unit includes image enhancement processing module, image denoising processing module, image filtering processing mould
Block and picture smooth treatment module, described image enhancing processing module, described image filtering process module, at described image denoising
Reason module and described image smoothing module are sequentially connected.
Described image enhances the image that processing module acquires described image harvester and carries out image enhancement processing, obtains
Image after image enhancement.
The enhanced image of described image is carried out denoising by described image denoising module, after obtaining image denoising
Image.
Image after described image denoising is filtered by described image filtering process module, after obtaining filtering process
Image.
Described image smoothing module is smoothed the image after the filtering process, after obtaining smoothing processing
Image.
The memory is stored with gap electric discharge, creeping discharge, the floating potentical body electric discharge of the transformer to be measured, bubble
The standard picture of electric discharge, the electric discharge of free metal particle and point discharge；Image transmitting after the smoothing processing is to the center
Processor, the central processing unit compare the standard picture in the image after the smoothing processing and the memory
It is right, to identify the shelf depreciation pattern of the transformer to be measured.
Preferably, described image harvester acquires sensor for ccd image.
Preferably, the image that described image enhancing processing module acquires described image harvester is carried out at image enhancement
Reason, specific image enhancement processing method are：
The image definition that described image harvester is acquired is two-dimensional function f (x, y), and wherein x, y is space coordinate, to figure
As f (x, y) progress image enhancement processings, the image p (x, y) after image enhancement is obtained, wherein,
, r is constant.
Preferably, the enhanced image of described image is carried out denoising by described image denoising module, specifically
Image denoising processing method is：
To described image, enhanced image p (x, y) carries out denoising, obtains the image g (x, y) after denoising, wherein,
。
Preferably, the image after described image denoising is filtered by described image filtering process module, specifically
Image filtering processing method is：
To described image, enhanced image g (x, y) is filtered, and obtains the image h (x, y) after filtering process, wherein,
。
Preferably, described image smoothing module is smoothed the image after the filtering process, specifically
Picture smooth treatment method is：
Image h (x, y) after the filtering process is smoothed, obtains the image s (x, y) after smoothing processing, wherein,
。
Compared with prior art, the present invention has following advantageous effect：
（1）Image collecting device is used in partial discharge of transformer pattern test system provided by the invention based on image comparison
Partial discharge of transformer image to be measured is acquired, then with the standard picture information of each quasi-mode of shelf depreciation in memory
The pattern to judge partial discharge of transformer to be measured is compared, the pattern of partial discharge of transformer to be measured can effectively be known
Not；
（2）In partial discharge of transformer pattern test system provided by the invention based on image comparison, image processing apparatus pair
The image of acquisition carries out image enhancement, image denoising, image filtering, picture smooth treatment, can efficiently, quickly extract change to be measured
The image information of depressor shelf depreciation can improve the identification precision to partial discharge of transformer pattern to be measured, efficiently reduce mistake
Sentence and happen.
Description of the drawings
Upon reading the detailed description of non-limiting embodiments with reference to the following drawings, other feature of the invention,
Objects and advantages will become more apparent upon：
The partial discharge of transformer pattern that Fig. 1 is the present invention tests system schematic；
Fig. 2 is the functional block diagram of the image processing apparatus of the present invention.
Specific embodiment
The partial discharge of transformer pattern test system of the present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, the present invention provides a kind of partial discharge of transformer pattern test system, using image collecting device,
Partial discharge of transformer pattern to be measured is identified in central processing unit and memory, image acquisition device transformation to be measured
The image information of device shelf depreciation, central processing unit will be by the standards in image processing apparatus treated image and memory
Image is compared, to identify the shelf depreciation pattern of transformer to be measured.
As shown in Fig. 2, image processing apparatus includes image enhancement processing module, image denoising processing module, image filtering
Processing module and picture smooth treatment module, image enhancement processing module, image filtering processing module, image denoising processing module
It is sequentially connected with picture smooth treatment module.
Partial discharge of transformer pattern test system include ultraviolet lens, image collecting device, image processing apparatus, in
Central processor and memory, wherein, ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory
It is sequentially connected, transformer to be measured is connected with ultraviolet lens.
Image processing apparatus include image enhancement processing module, image denoising processing module, image filtering processing module and
Picture smooth treatment module, image enhancement processing module, image filtering processing module, image denoising processing module and image smoothing
Processing module is sequentially connected.
The image of image acquisition device is carried out image enhancement processing by image enhancement processing module, obtains image enhancement
Image afterwards.
Image after image enhancement is carried out denoising by image denoising processing module, obtains the image after image denoising.
Image after image denoising is filtered by image filtering processing module, obtains the image after filtering process.
Picture smooth treatment module is smoothed the image after filtering process, obtains the image after smoothing processing.
Memory be stored with the gap electric discharge of transformer to be measured, creeping discharge, floating potentical body electric discharge, bubble electric discharge, from
By the standard picture of metallic particles electric discharge and point discharge；Image transmitting after smoothing processing is to central processing unit, central processing
Standard picture in image and memory after smoothing processing is compared device, to identify the shelf depreciation mould of transformer to be measured
Formula.
Specifically, image collector is set to ccd image acquisition sensor.
Specifically, the image of image acquisition device is carried out image enhancement processing by image enhancement processing module, specifically
Image enhancement processing method be：
It is two-dimensional function f (x, y) by the image definition of image acquisition device, wherein x, y is space coordinate, to image f
(x, y) carries out image enhancement processing, obtains the image p (x, y) after image enhancement, wherein,
, r is constant.
Specifically, the image after image enhancement is carried out denoising, specific image denoising by image denoising processing module
Processing method is：
Denoising is carried out to the image p (x, y) after image enhancement, obtains the image g (x, y) after denoising, wherein,
。
Specifically, the image after image denoising is filtered by image filtering processing module, specific image filtering
Processing method is：
Image g (x, y) after image enhancement is filtered, obtains the image h (x, y) after filtering process, wherein,
。
Specifically, picture smooth treatment module is smoothed the image after filtering process, specific image smoothing
Processing method is：
Image h (x, y) after filtering process is smoothed, obtains the image s (x, y) after smoothing processing, wherein,
。
Specifically, when being detected using above-mentioned partial discharge of transformer pattern test system, the specific steps are：
S1：Ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory are sequentially connected, then will
Transformer to be measured is connected with ultraviolet lens, then the gap electric discharge, creeping discharge, floating potentical body of transformer to be measured are discharged,
The standard picture of bubble electric discharge, the electric discharge of free metal particle and point discharge is stored in memory；
S2：The ultraviolet image of partial discharge of transformer to be measured is acquired by ultraviolet lens, and collected ultraviolet image is passed
Image collecting device is transported to, ultraviolet image is transmitted to image processing apparatus by image collecting device again；
S3：Image processing apparatus ultraviolet image is carried out successively image enhancement processing, image denoising processing, image filtering processing and
Picture smooth treatment finally obtains the image after smoothing processing；
S4：By the image transmitting after smoothing processing to central processing unit, central processing unit is by the image after smoothing processing and storage
Standard picture in device is compared, to identify the shelf depreciation pattern of transformer to be measured.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those of ordinary skill in the art that, to the technical side of the present invention
Case is modified or replaced equivalently, and without departure from the spirit and scope of technical solution of the present invention, should all be covered in the present invention
Right in.
Claims (6)
1. a kind of partial discharge of transformer pattern tests system, which is characterized in that the partial discharge of transformer pattern test system
System includes ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory, wherein, the ultraviolet light
Camera lens, described image harvester, described image processing unit, the central processing unit and the memory are sequentially connected, and are treated
Transformer is surveyed to connect with the ultraviolet lens；
Described image processing unit include image enhancement processing module, image denoising processing module, image filtering processing module and
Picture smooth treatment module, described image enhancing processing module, described image filtering process module, described image denoising mould
Block and described image smoothing module are sequentially connected；
Described image enhances the image that processing module acquires described image harvester and carries out image enhancement processing, obtains image
Enhanced image；
The enhanced image of described image is carried out denoising by described image denoising module, obtains the figure after image denoising
Picture；
Image after described image denoising is filtered by described image filtering process module, obtains the figure after filtering process
Picture；
Described image smoothing module is smoothed the image after the filtering process, obtains the figure after smoothing processing
Picture；
The memory is stored with gap electric discharge, creeping discharge, the floating potentical body electric discharge of the transformer to be measured, bubble is put
The standard picture of electricity, the electric discharge of free metal particle and point discharge；Image transmitting after the smoothing processing is to the centre
Device is managed, the central processing unit compares the standard picture in the image after the smoothing processing and the memory
It is right, to identify the shelf depreciation pattern of the transformer to be measured.
2. partial discharge of transformer pattern according to claim 1 tests system, which is characterized in that described image acquisition dress
It is set to ccd image acquisition sensor.
3. partial discharge of transformer pattern according to claim 1 tests system, which is characterized in that at described image enhancing
The image that reason module acquires described image harvester carries out image enhancement processing, and specific image enhancement processing method is：
The image definition that described image harvester is acquired is two-dimensional function f (x, y), and wherein x, y is space coordinate, to figure
As f (x, y) progress image enhancement processings, the image p (x, y) after image enhancement is obtained, wherein,
, r is constant.
4. partial discharge of transformer pattern according to claim 3 tests system, which is characterized in that at described image denoising
It manages module and the enhanced image of described image is subjected to denoising, specific image denoising processing method is：
To described image, enhanced image p (x, y) carries out denoising, obtains the image g (x, y) after denoising, wherein,
。
5. partial discharge of transformer pattern according to claim 4 tests system, which is characterized in that at described image filtering
Image after described image denoising is filtered by reason module, and specific image filtering processing method is：
To described image, enhanced image g (x, y) is filtered, and obtains the image h (x, y) after filtering process, wherein,
。
6. partial discharge of transformer pattern according to claim 5 tests system, which is characterized in that described image is smoothly located
Reason module is smoothed the image after the filtering process, and specific picture smooth treatment method is：
Image h (x, y) after the filtering process is smoothed, obtains the image s (x, y) after smoothing processing, wherein,
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810046481.8A CN108241107A (en) | 2018-01-17 | 2018-01-17 | A kind of partial discharge of transformer pattern tests system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810046481.8A CN108241107A (en) | 2018-01-17 | 2018-01-17 | A kind of partial discharge of transformer pattern tests system |
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| Publication Number | Publication Date |
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| CN108241107A true CN108241107A (en) | 2018-07-03 |
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| CN201810046481.8A Withdrawn CN108241107A (en) | 2018-01-17 | 2018-01-17 | A kind of partial discharge of transformer pattern tests system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910452A (en) * | 2018-07-14 | 2018-11-30 | 芜湖益浩昌智能设备有限公司 | A kind of transmission device with process defencive function |
| CN111044864A (en) * | 2019-12-30 | 2020-04-21 | 江苏环东电气有限公司 | Detection method for partial discharge of dry-type transformer |
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| CN101551435A (en) * | 2009-05-15 | 2009-10-07 | 湖北省电力试验研究院 | Method for detecting corona discharging and device thereof |
| CN101949746A (en) * | 2010-08-30 | 2011-01-19 | 中国人民解放军后勤工程学院 | Automatic calibration method of visual thermometer and automatic thermometer calibrator |
| CN102221665A (en) * | 2011-03-21 | 2011-10-19 | 江苏省电力公司无锡供电公司 | Power cable partial discharge detection contrast method |
| CN105486989A (en) * | 2015-11-23 | 2016-04-13 | 北京环境特性研究所 | UV imaging corona detection system and method for unmanned aerial vehicle (UAV) |
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2018
- 2018-01-17 CN CN201810046481.8A patent/CN108241107A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101551435A (en) * | 2009-05-15 | 2009-10-07 | 湖北省电力试验研究院 | Method for detecting corona discharging and device thereof |
| CN101949746A (en) * | 2010-08-30 | 2011-01-19 | 中国人民解放军后勤工程学院 | Automatic calibration method of visual thermometer and automatic thermometer calibrator |
| CN102221665A (en) * | 2011-03-21 | 2011-10-19 | 江苏省电力公司无锡供电公司 | Power cable partial discharge detection contrast method |
| CN105486989A (en) * | 2015-11-23 | 2016-04-13 | 北京环境特性研究所 | UV imaging corona detection system and method for unmanned aerial vehicle (UAV) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108910452A (en) * | 2018-07-14 | 2018-11-30 | 芜湖益浩昌智能设备有限公司 | A kind of transmission device with process defencive function |
| CN111044864A (en) * | 2019-12-30 | 2020-04-21 | 江苏环东电气有限公司 | Detection method for partial discharge of dry-type transformer |
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Application publication date: 20180703 |