CN108333487A - A kind of power equipment partial discharge detecting system - Google Patents
A kind of power equipment partial discharge detecting system Download PDFInfo
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- CN108333487A CN108333487A CN201810109063.9A CN201810109063A CN108333487A CN 108333487 A CN108333487 A CN 108333487A CN 201810109063 A CN201810109063 A CN 201810109063A CN 108333487 A CN108333487 A CN 108333487A
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- image
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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
- G01R31/1218—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 using optical methods; using charged particle, e.g. electron, beams or X-rays
Abstract
The present invention provides a kind of power equipment partial discharge detecting system, utilize image collecting device, power equipment shelf depreciation pattern to be measured is identified in central processing unit and memory, the image information of image acquisition device power equipment shelf depreciation 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 the power equipment, 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 denoising processing module, picture smooth treatment module and image filtering processing module are sequentially connected.
Description
Technical field
The present invention relates to power equipment testing field more particularly to a kind of power equipment partial discharge detecting 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 power equipment is also more and more important, since power equipment is generally all in outdoor, inevitably
Phenomena such as will produce insulation damages, aging, shelf depreciation can also generate therewith.Shelf depreciation can be accelerated to Electric Power Equipment Insulation
Damage reduces insulation life, seriously affects the safe operation of equipment.
Currently, the detection of power equipment shelf depreciation still relies on ocular estimate to carry out shelf depreciation and combines existing experience
Carrying out shelf depreciation pattern, this method has certain subjectivity, lack scientific and accuracy, while efficiency is low, because
This, it would be desirable to a kind of more effectively method realization power equipment shelf depreciation pattern.
Invention content
Therefore, in order to overcome the above problem, the present invention provides a kind of power equipment partial discharge detecting system, utilizes image
Power equipment shelf depreciation pattern to be measured is identified in harvester, central processing unit and memory, image collecting device
Acquire the image information of power equipment shelf depreciation to be measured, central processing unit will pass through image processing apparatus treated image and
Standard picture in memory is compared, to identify the shelf depreciation pattern of the power equipment.
A kind of power equipment partial discharge detecting system according to the present invention, the power equipment partial discharge detecting system
Including ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory, wherein the ultraviolet light microscopic
Head, described image harvester, described image processing unit, the central processing unit and the memory are sequentially connected, to be measured
Power equipment 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 denoising module, described image are smoothly located
Reason module and described image are filtered module and 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.
Described image smoothing module is smoothed the image after the denoising, after obtaining smoothing processing
Image.
Described image is filtered module and is filtered the image after described image smoothing processing, obtains at filtering
Image after reason.
The memory be stored with the power equipment to be measured gap electric discharge, creeping discharge, floating potentical body electric discharge and
The standard picture of bubble electric discharge；It is described be filtered after image transmitting to the central processing unit, the central processing unit will
It is described be filtered after image and the memory in the standard picture be compared, to identify that the electric power to be measured is set
Standby shelf depreciation pattern.
Preferably, described image harvester is that ccd image acquires sensor.
Preferably, the image that described image enhancing processing module acquires described image harvester carries 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：
Denoising is carried out to the enhanced image p (x, y) of described image, obtains the image g (x, y) after denoising, wherein
。
Preferably, described image smoothing module is smoothed the image after the denoising, specifically
Picture smooth treatment method is：
Image g (x, y) after the denoising is smoothed, the image s (x, y) after smoothing processing is obtained, wherein
。
Preferably, described image is filtered module and is filtered the image after described image smoothing processing, tool
The image filtering processing method of body is：
Image s (x, y) after described image smoothing processing is filtered, the image h (x, y) after being filtered,
Wherein,
。
Compared with prior art, the present invention has following advantageous effect：
（1）Image collecting device pair is used in power equipment partial discharge detecting system provided by the invention based on image comparison
Power equipment shelf depreciation image to be measured is acquired, then with the standard picture information of each quasi-mode of shelf depreciation in memory
It is compared to judge the pattern of power equipment shelf depreciation to be measured, can be had to the pattern of power equipment shelf depreciation to be measured
Effect identification；
（2）In power equipment partial discharge detecting system provided by the invention based on image comparison, image processing apparatus is to adopting
The image of collection carries out image enhancement, image denoising, picture smooth treatment, image filtering, can efficiently, quickly extract electric power to be measured
The image information of apparatus local discharge can be improved the identification precision to power equipment shelf depreciation pattern to be measured, efficiently reduce
Erroneous judgement happens.
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：
Fig. 1 is the power equipment partial discharge detecting system schematic diagram of the present invention；
Fig. 2 is the functional block diagram of the image processing apparatus of the present invention.
Specific implementation mode
The power equipment partial discharge detecting 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 power equipment partial discharge detecting system, using image collecting device, in
Power equipment shelf depreciation pattern to be measured is identified in centre processing unit and memory, image acquisition device electric power to be measured
The image information of apparatus local discharge, central processing unit will be by the marks in image processing apparatus treated image and memory
Quasi- image is compared, to identify the shelf depreciation pattern of the power equipment.
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 denoising processing module, picture smooth treatment module
It is sequentially connected with image filtering processing module.
Power equipment partial discharge detecting system includes ultraviolet lens, image collecting device, image processing apparatus, center
Processor and memory, wherein ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory according to
Secondary connection, power equipment to be measured are connected with ultraviolet lens.
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.
Picture smooth treatment module is smoothed the image after denoising, obtains the image after smoothing processing.
Image after image smoothing is filtered by image filtering processing module, the image after being filtered.
Memory is stored with gap electric discharge, creeping discharge, floating potentical body electric discharge and the bubble electric discharge of power equipment to be measured
Standard picture；For image transmitting after being filtered to central processing unit, central processing unit is by the image after being filtered and deposits
Standard picture in reservoir is compared, to identify the shelf depreciation pattern of power equipment to be measured.
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, picture smooth treatment module is smoothed the image after denoising, specific image smoothing
Processing method is：
Image g (x, y) after denoising is smoothed, the image s (x, y) after smoothing processing is obtained, wherein
。
Specifically, the image after picture smooth treatment is filtered by image filtering processing module, specific image
Filter processing method is：
Image s (x, y) after picture smooth treatment is filtered, the image h (x, y) after being filtered, wherein
。
Specifically, when being detected using above-mentioned power equipment partial discharge detecting system, the specific steps are：
S1：Ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory are sequentially connected, then will
Power equipment to be measured is connected with ultraviolet lens, then the gap electric discharge of power equipment to be measured, creeping discharge, floating potentical body are put
The standard picture of electricity and bubble electric discharge is stored in memory；
S2：Acquire the ultraviolet image of power equipment shelf depreciation to be measured by ultraviolet lens, and by collected ultraviolet image
It is transmitted to image collecting device, 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, picture smooth treatment and
Image filtering processing, finally obtains the image after being filtered；
S4：By the image transmitting after being filtered to central processing unit, central processing unit is by the image after being filtered and storage
Standard picture in device is compared, to identify the shelf depreciation pattern of the power equipment to be measured.
It should be noted last that the above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although ginseng
It is described the invention 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 power equipment partial discharge detecting system, which is characterized in that the power equipment partial discharge detecting system packet
Include ultraviolet lens, image collecting device, image processing apparatus, central processing unit and memory, wherein the ultraviolet light microscopic
Head, described image harvester, described image processing unit, the central processing unit and the memory are sequentially connected, to be measured
Power equipment is connected 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 enhance processing module, described image denoising module, described image smoothing processing mould
Block and described image are filtered module and 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；
Described image smoothing module is smoothed the image after described image denoising, obtains the figure after smoothing processing
Picture；
Described image is filtered module and is filtered the image after described image smoothing processing, after being filtered
Image；
The memory is stored with gap electric discharge, creeping discharge, floating potentical body electric discharge and the bubble of the power equipment to be measured
The standard picture of electric discharge；It is described be filtered after image transmitting to the central processing unit, the central processing unit will be described
The standard picture in image and the memory after being filtered is compared, to identify the power equipment to be measured
Shelf depreciation pattern.
2. power equipment partial discharge detecting system according to claim 1, which is characterized in that described image harvester
Sensor is acquired for ccd image.
3. power equipment partial discharge detecting system according to claim 1, which is characterized in that described image enhancing is handled
The image that 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. power equipment partial discharge detecting system according to claim 3, which is characterized in that described image denoising
The enhanced image of described image is carried out denoising by module, and specific image denoising processing method is：
Denoising is carried out to the enhanced image p (x, y) of described image, obtains the image g (x, y) after denoising, wherein
。
5. power equipment partial discharge detecting system according to claim 4, which is characterized in that described image smoothing processing
Module is smoothed the image after the denoising, and specific picture smooth treatment method is：
Image g (x, y) after the denoising is smoothed, the image s (x, y) after smoothing processing is obtained, wherein
。
6. power equipment partial discharge detecting system according to claim 5, which is characterized in that described image is filtered
Image after described image smoothing processing is filtered by module, and specific image filtering processing method is：
Image s (x, y) after described image smoothing processing is filtered, the image h (x, y) after being filtered,
Wherein,
。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810109063.9A CN108333487A (en) | 2018-02-05 | 2018-02-05 | A kind of power equipment partial discharge detecting system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810109063.9A CN108333487A (en) | 2018-02-05 | 2018-02-05 | A kind of power equipment partial discharge detecting system |
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| CN108333487A true CN108333487A (en) | 2018-07-27 |
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| 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 |
| CN102243289A (en) * | 2011-06-20 | 2011-11-16 | 国网电力科学研究院 | Method and apparatus for partial discharge detection of high-voltage electrical power equipment with hardware anti-interference utilization |
| CN103543393A (en) * | 2013-10-23 | 2014-01-29 | 国家电网公司 | Diagnostic method and detecting system for GIS partial discharge |
| 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) |
| CN105606975A (en) * | 2016-03-09 | 2016-05-25 | 武汉华威众科电力有限公司 | Localizable ultrahigh-frequency cable partial discharge detection method and device |
| US20160274176A1 (en) * | 2013-10-29 | 2016-09-22 | Prysmian S.P.A. | Partial discharge detection system and method employing a synthetized synchronization signal |
-
2018
- 2018-02-05 CN CN201810109063.9A patent/CN108333487A/en not_active Withdrawn
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN102243289A (en) * | 2011-06-20 | 2011-11-16 | 国网电力科学研究院 | Method and apparatus for partial discharge detection of high-voltage electrical power equipment with hardware anti-interference utilization |
| CN103543393A (en) * | 2013-10-23 | 2014-01-29 | 国家电网公司 | Diagnostic method and detecting system for GIS partial discharge |
| US20160274176A1 (en) * | 2013-10-29 | 2016-09-22 | Prysmian S.P.A. | Partial discharge detection system and method employing a synthetized synchronization signal |
| 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) |
| CN105606975A (en) * | 2016-03-09 | 2016-05-25 | 武汉华威众科电力有限公司 | Localizable ultrahigh-frequency cable partial discharge detection method and device |
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Application publication date: 20180727 |