CN107390258B - The confirmation method of point of discharge on a kind of insulating paper - Google Patents
The confirmation method of point of discharge on a kind of insulating paper Download PDFInfo
- Publication number
- CN107390258B CN107390258B CN201710818458.1A CN201710818458A CN107390258B CN 107390258 B CN107390258 B CN 107390258B CN 201710818458 A CN201710818458 A CN 201710818458A CN 107390258 B CN107390258 B CN 107390258B
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- insulating paper
- point
- discharge
- carbon
- confirmation method
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/36—Measuring spectral distribution of X-rays or of nuclear radiation spectrometry
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/22—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by measuring secondary emission from the material
Abstract
The application belongs to electrical equipment detection technique field, and in particular to the confirmation method of point of discharge on a kind of insulating paper.The confirmation method of point of discharge is by using energy spectrum analysis and the method that combines Microstructure characterization on a kind of insulating paper provided by the present invention, measures the insulating paper of naked failure respectively, exists or doubtful there are the microstructures and its carbon oxygen content on the insulating paper surface of point of discharge；Then it will test result to be compared, when existing or doubtful there are the insulating paper surface of point of discharge, there are apparent point of discharge traces, and its carbon element content be higher than naked failure insulating paper surface carbon element content when, can confirm that there are point of discharges on the problem insulating paper.Above method detecting step is simple, the process of simplified operation personnel, without carrying out cumbersome a variety of tests, is not necessarily to expensive detecting instrument, has a good application prospect in electrical equipment detection technique field.
Description
Technical field
The invention belongs to electrical equipment detection technique fields, and in particular to the confirmation method of point of discharge on a kind of insulating paper.
Background technique
Insulating paper is the general name of electrical isolation paper, has good insulation performance and mechanical strength, can be used as cable, coil
Deng the insulating materials of every electrical equipment.In power equipment, insulation performance is to measure the important finger of power equipment health degree
One of mark, for high-tension apparatus.However, power equipment is always due to various originals in actual operational process
Because electric discharge phenomena inevitably occur, the presence of insulating paper point of discharge influences its insulation performance very big.Therefore, accurate confirmation
The presence of the point of discharge on insulating paper is significant to the normal operation of power equipment out.
Insulating paper easily entrains other substances in the fabrication process, apparently similar with point of discharge, it is difficult to pass through naked eyes
Direct Recognition point of discharge or doubtful point of discharge；Moreover, the energy difference between point of discharge and doubtful point of discharge is smaller, insulating properties
Energy difference is small, generally requires to be detected by the high-grade, precision and advanced instrument of some large sizes.201510412958.6 disclosure of patent application
It is a kind of to be based on multispectral composite insulator detection method, first under identical operating condition to the same base shaft tower of same route
Visible images, infrared image and the ultraviolet image of different composite insulator be compared；Then it is directed to each compound inslation
Son establishes multispectral Test database, according to the data of the detection of some cycles, is compared to data, finds out existing number
According to difference, to confirm that there are point of discharges on composite insulator.However, above-mentioned steps are relatively complicated, can not quickly and easily examine
Survey the point of discharge on identification insulator.
Summary of the invention
In view of this, being used for the purpose of the present invention is to provide a kind of confirmation method of point of discharge on novel insulating paper
Quickly and easily identify and distinguish the point of discharge on insulating paper or doubtful point of discharge.The specific technical solution of the present invention is as follows:
The confirmation method of point of discharge on a kind of insulating paper, comprising the following steps:
A) method for carrying out energy spectrum analysis combination Microstructure characterization to the first insulating paper detects the first insulating paper table
The carbon in face, the content of oxygen element simultaneously observe its surface microstructure, discharge off point on first insulating paper；
B) method for carrying out energy spectrum analysis combination Microstructure characterization to the second insulating paper detects the second insulating paper table
The carbon in face, the content of oxygen element simultaneously observe its surface microstructure, exist on second insulating paper or doubtful there are point of discharges；
C) result of step b) He step a) are compared, the carbon element content on second insulating paper surface is higher than institute
It states the carbon element content on the first insulating paper surface and there are point of discharge trace, there are point of discharges for second insulating paper.
Based on a large amount of screening experiment inventor's early period, the weight of the carbon on the insulating paper surface of naked failure is found
Percentage is lower than 19.5%, and atomic percent is lower than 24.1%；There are the carbon element contents on the insulating paper surface of shelf depreciation
The generally higher than insulating paper surface carbon element content of naked failure.
Preferably, the weight percent of the carbon on first insulating paper surface is 18.5%~19.5%, atom hundred
Divide than being 23.5%~24.1%.
Preferably, the energy spectrum analysis uses energy disperse spectroscopy.
Preferably, the Microstructure characterization method uses scanning electron microscope.
Preferably, the point of discharge trace is that surface smoothness is low and/or surface fiber is broken.
In conclusion on a kind of insulating paper provided by the present invention the confirmation method of point of discharge by using energy spectrum analysis simultaneously
In conjunction with the method for Microstructure characterization, the insulating paper of naked failure is measured respectively, is existed or doubtful there are the insulation of point of discharge
The microstructure and its carbon oxygen content on paper surface；Then it will test result to be compared, when existing or doubtful there are point of discharge
There are apparent point of discharge traces on insulating paper surface, and its carbon element content is higher than the carbon on the insulating paper surface of naked failure
When constituent content, it can confirm that there are point of discharges on the problem insulating paper.Above method detecting step is simple, simplified operation personnel
Process be not necessarily to expensive detecting instrument without carrying out cumbersome a variety of tests, have in electrical equipment detection technique field
There is good application prospect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 a is that the surface SEM of the 15th screen of A phase casing schemes；
Fig. 1 b is that the surface SEM of the 28th screen of A phase casing schemes；
Fig. 1 c is that the surface SEM of the 40th screen of A phase casing schemes；
Fig. 1 d is that the surface SEM of the 85th screen of A phase casing schemes；
Fig. 2 a is that the surface SEM of the 15th screen of B phase casing schemes；
Fig. 2 b is that the surface SEM of the 28th screen of B phase casing schemes；
Fig. 2 c is that the surface SEM of the 40th screen of B phase casing schemes；
Fig. 2 d is that the surface SEM of the 85th screen of B phase casing schemes.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Embodiment 1
In the casing disassembling analysis to high-tension transformer, it is found that there are many places folding line, A phase casing naked eyes on B phase casing
Observe solid colour and without obvious protrusion or folding line.It is found through detection, A is nested, and pipe insulation is functional, and B phase casing exists exhausted
Reason barrier, there are point of discharges for conjecture B phase sleeve surface.In order to accurately confirm the position of the point of discharge on B phase casing, the present embodiment
Make following research:
The surface region of A phase casing and B phase casing is accordingly divided into 100 screens respectively, consequently facilitating confirmation B phase casing
The specific location of middle point of discharge or doubtful point of discharge.Wherein, the surfacing of any one screen of B phase casing and it is corresponding wherein
The working condition of one screen A phase casing is similar.
Then, energy disperse spectroscopy is respectively adopted and scanning electron microscope is combined to carry out power spectrum to the surfacing of B phase casing and A phase casing
Analysis, and observe the flatness and fibrous fracture situation on its surface.
As shown in 1 result of table, the weight percent of the insulating paper surface carbon of A phase casing is 18.5%~
19.5%, atomic percent is 23.5%~24.1%；The weight percent of the insulating paper surface carbon of B phase casing is
19.2%~21.6%, atomic percent is 24.1%~27.3%.Wherein, the 15th, 40, the B phase casing carbon of 85 screens
Weight percent and atomic percent obviously higher than A phase casing, the weight percent of the B phase casing carbon of the 28th screen and
Atomic percent is approximate with A phase casing.
Fig. 1 a~1d and Fig. 2 a~2d are respectively the SEM figure of A phase casing and B phase casing, A phase casing in Fig. 1 a to Fig. 1 d
Surface be uniform fibrous face, without apparent point of discharge trace；In addition to the 28th screen in Fig. 2 a to Fig. 2 d, the of B phase casing
15, the surface smoothness of 40,85 screens is lower, and there are apparent point of discharge traces.
The above analysis as a result, can confirm the 15th of B phase casing, 40, there are point of discharge, the 28th screens of B phase casing for 85 screens
For normal insulating paper surface, folding line may be to bring into insulating paper manufacturing process.
1 energy spectrum analysis testing result of table
。
Claims (4)
1. the confirmation method of point of discharge on a kind of insulating paper, which comprises the following steps:
A) method that energy spectrum analysis combination Microstructure characterization is carried out to the first insulating paper, detection first insulating paper surface
Carbon, oxygen element content and observe its surface microstructure, discharge off point on first insulating paper；
B) method that energy spectrum analysis combination Microstructure characterization is carried out to the second insulating paper, detection second insulating paper surface
Carbon, oxygen element content and observe its surface microstructure, exist on second insulating paper or doubtful there are point of discharges；
C) result of step b) He step a) are compared, the carbon element content on second insulating paper surface is higher than described the
The carbon element content on one insulating paper surface and there are point of discharge traces, there are point of discharges for second insulating paper；
Wherein, the point of discharge trace is that surface smoothness is low and/or surface fiber is broken.
2. confirmation method according to claim 1, which is characterized in that the weight of the carbon on first insulating paper surface
Percentage is 18.5%~19.5%, and atomic percent is 23.5%~24.1%.
3. confirmation method according to claim 1, which is characterized in that the energy spectrum analysis uses energy disperse spectroscopy.
4. confirmation method according to claim 1, which is characterized in that the Microstructure characterization method uses scanning electron
Microscope.
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| CN201710818458.1A CN107390258B (en) | 2017-09-12 | 2017-09-12 | The confirmation method of point of discharge on a kind of insulating paper |
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| CN201710818458.1A CN107390258B (en) | 2017-09-12 | 2017-09-12 | The confirmation method of point of discharge on a kind of insulating paper |
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| CN107390258A CN107390258A (en) | 2017-11-24 |
| CN107390258B true CN107390258B (en) | 2019-03-22 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364279Y (en) * | 2009-03-11 | 2009-12-16 | 杜丕谦 | Hollow fiber membrane probe |
| CN102564824A (en) * | 2011-12-30 | 2012-07-11 | 华北电力大学 | Specimen arrangement method for keeping oilpaper moisture balance |
| CN203643220U (en) * | 2013-11-14 | 2014-06-11 | 南车株洲电机有限公司 | Rhombic coated insulation paper bonding strength sample preparation tool for electricians |
| CN105223217A (en) * | 2015-09-11 | 2016-01-06 | 云南电网有限责任公司电力科学研究院 | The method that in detecting insulating oil, active sulfur compound exists in situation is there is based on oxygen |
| CN106932693A (en) * | 2017-03-09 | 2017-07-07 | 重庆大学 | Insulating paper Diagnosis of Aging based on fiber dispersion dye image feature in oil |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5548911A (en) * | 1978-09-07 | 1980-04-08 | Kureha Chem Ind Co Ltd | Oil contained electric equipment |
| CN1161799C (en) * | 1997-06-03 | 2004-08-11 | 三菱电机株式会社 | Method for evaluating deterioration of insulating paper |
| CN104376936B (en) * | 2014-11-22 | 2016-08-17 | 吉林市能兴电力设备有限公司 | Lightning protection pillar insulator |
| CN105043993A (en) * | 2015-07-14 | 2015-11-11 | 国网山东省电力公司电力科学研究院 | Method for detecting composite insulator based on multi-spectrum |
| JP2017157460A (en) * | 2016-03-03 | 2017-09-07 | 古河電気工業株式会社 | Insulation wire, coil and electric and electronic device |
-
2017
- 2017-09-12 CN CN201710818458.1A patent/CN107390258B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201364279Y (en) * | 2009-03-11 | 2009-12-16 | 杜丕谦 | Hollow fiber membrane probe |
| CN102564824A (en) * | 2011-12-30 | 2012-07-11 | 华北电力大学 | Specimen arrangement method for keeping oilpaper moisture balance |
| CN203643220U (en) * | 2013-11-14 | 2014-06-11 | 南车株洲电机有限公司 | Rhombic coated insulation paper bonding strength sample preparation tool for electricians |
| CN105223217A (en) * | 2015-09-11 | 2016-01-06 | 云南电网有限责任公司电力科学研究院 | The method that in detecting insulating oil, active sulfur compound exists in situation is there is based on oxygen |
| CN106932693A (en) * | 2017-03-09 | 2017-07-07 | 重庆大学 | Insulating paper Diagnosis of Aging based on fiber dispersion dye image feature in oil |
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| CN107390258A (en) | 2017-11-24 |
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