CN110261343A - The appraisal procedure of the Ageing of Insulators degree - Google Patents
The appraisal procedure of the Ageing of Insulators degree Download PDFInfo
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- CN110261343A CN110261343A CN201910375609.XA CN201910375609A CN110261343A CN 110261343 A CN110261343 A CN 110261343A CN 201910375609 A CN201910375609 A CN 201910375609A CN 110261343 A CN110261343 A CN 110261343A
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- absorption coefficient
- measured
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- point
- ageing
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- 239000012212 insulator Substances 0.000 title claims abstract description 53
- 230000032683 aging Effects 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000010521 absorption reaction Methods 0.000 claims abstract description 51
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000003595 spectral effect Effects 0.000 description 7
- 239000000463 material Substances 0.000 description 5
- 238000009738 saturating Methods 0.000 description 4
- 238000009422 external insulation Methods 0.000 description 2
- 229920000260 silastic Polymers 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- KHDSWONFYIAAPE-UHFFFAOYSA-N silicon sulfide Chemical compound S=[Si]=S KHDSWONFYIAAPE-UHFFFAOYSA-N 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
- G01N21/35—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light
- G01N21/3581—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation
- G01N21/3586—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light using far infrared light; using Terahertz radiation by Terahertz time domain spectroscopy [THz-TDS]
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The present invention provides a kind of appraisal procedures of the Ageing of Insulators degree, comprising the following steps: multiple sampled points to be measured are chosen from the insulator；Obtain actual absorption coefficient of the insulator under multiple Frequency points that the sampled point to be measured is under THz wave transmission mode；And the actual absorption coefficient of the sampled point to be measured is made comparisons with standard absorption coefficient, so that it is determined that the degree of aging of the insulator.The appraisal procedure of the Ageing of Insulators degree provided by the invention is easy to operate, and test result is accurate.
Description
Technical field
The present invention relates to electric device maintenance field more particularly to a kind of appraisal procedures of the Ageing of Insulators degree.
Background technique
A kind of high-temperature silicon disulfide rubber electrical insulating material very excellent as electric property and mechanical performance, at present
It is widely used in the various insulator of high pressure external insulation, serves as sheath and full skirt part.But it is for years in insulator
Operational process in, silastic material often under the action of external natural conditions (such as illumination, ultraviolet light, wind and rain) occur one
The aging for determining degree will seriously affect the safety and reliability of insulator when its degree of aging increases to a certain threshold value.Cause
This, it is very necessary to the detection of silastic material degree of aging in high pressure external insulation field.
Summary of the invention
In view of this, it is necessary to provide a kind of appraisal procedures of the Ageing of Insulators degree.
The present invention provides a kind of appraisal procedure of the Ageing of Insulators degree, comprising the following steps:
Multiple sampled points to be measured are chosen from the insulator；
The insulator is obtained under multiple Frequency points that the sampled point to be measured is under THz wave transmission mode
Actual absorption coefficient；And
The actual absorption coefficient of the sampled point to be measured is made comparisons with standard absorption coefficient, so that it is determined that the insulator
Degree of aging.
Advantage for present invention: the present invention is surveyed using specific spectral response characteristic of the different material to THz wave
The actual absorption coefficient of insulator is measured, and the actual absorption coefficient and standard absorption coefficients comparison are determined into its degree of aging,
The appraisal procedure of the Ageing of Insulators degree provided by the invention is easy to operate, and test result is accurate.
Detailed description of the invention
Fig. 1 is the flow chart of the appraisal procedure of the Ageing of Insulators degree in present pre-ferred embodiments.
Fig. 2 is the vertical section of the insulator in present pre-ferred embodiments.
Fig. 3 is the standard absorption coefficient spectral line of the standard sample point in present pre-ferred embodiments and the reality of sampled point to be measured
Border absorption coefficient spectrum.
Symbol description
| Insulator | 100 |
| Plug | 10 |
| Sheath | 20 |
| Body | 201 |
| Extension | 202 |
The present invention that the following detailed description will be further explained with reference to the above drawings.
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.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Referring to Fig. 1, present pre-ferred embodiments provide a kind of appraisal procedure of the Ageing of Insulators degree, for assessing absolutely
The degree of aging of edge 100 (ginseng Fig. 2).It the described method comprises the following steps:
S11, multiple sampled points to be measured are chosen from the insulator 100.
As shown in Fig. 2, in the present embodiment, the insulator 100 is silicone rubber jacket-epoxy plug composite insulator.
The insulator 100 includes a plug 10 and a sheath 20.The plug 10 is substantially cylindrical.The sheath 20 coats institute
State plug 10.The sheath 20 includes a body 201 and extends shape from the body 201 to the direction far from the plug 10
At multiple extensions 202.The material of the sheath 20 is silicon rubber.The sheath 20 has insulation performance.
Since the outer surface of the insulator 100 is degree of aging part the most serious, the insulator is selected
The outer surface of 100 body 201 and the outer surface of the extension 202 are as the sampled point to be measured.In order to true
Objectively reflect that the degree of aging of the insulator 100, the thickness of the sampled point to be measured are no more than 1 millimeter, and at random in institute
It chooses the outer surface of the outer surface and the extension 202 of stating body 201.Refer to it is appreciated that randomly selecting in the shield
Upper position, medium position and the lower position of set 20 choose the sampled point to be measured.
S12, the acquisition insulator 100 are in multiple frequencies under THz wave transmission mode in the sampled point to be measured
Actual absorption coefficient under point.
As shown in figure 3, being abscissa by the saturating frequency of the THz wave, the saturating frequency of THz wave is corresponding described
The actual absorption coefficient of insulator 100 is ordinate, obtains the actual absorption coefficient spectral line of the sampled point to be measured.
S13, the actual absorption coefficient of the sampled point to be measured is made comparisons with standard absorption coefficient, so that it is determined that described exhausted
The degree of aging of edge 100.
The standard absorption coefficient is to multiple Frequency points of at least standard sample point under THz wave transmission mode
Under tested to obtain.
In the present embodiment, since the medium position of the body 201 is held compared to the end positions of the body 201
Influenced by field strength small, and 201 interior zone of the body is much lower compared to exterior surface area degree of aging, therefore, Mei Yibiao
The outer surface that quasi- sampled point is selected from the middle part of the body 201 and apart from the body 201 is greater than the position of a preset distance.This
Outside, the standard sample point is further selected from the new insulator of one just to have dispatched from the factory.
When the quantity of the standard sample point is one, absorption coefficient of the standard sample point under multiple Frequency points
For the standard absorption coefficient.When the quantity of the standard sample point is multiple, the standard sample point is along the body 201
Circumferencial direction choose, the average value by calculating the absorption coefficient of the standard sample point under each Frequency point obtains described
Absorption coefficient of the standard sample point under the multiple Frequency point, to obtain the standard absorption coefficient.
As shown in figure 3, being abscissa by the saturating frequency of the THz wave, the saturating frequency of THz wave is corresponding described
The standard absorption coefficient of standard sample point is ordinate, obtains the standard absorption coefficient spectral line of the standard sample point.
Defining the difference value between the actual absorption coefficient and the standard absorption coefficient is D, the meter of the difference value D
It is as follows to calculate formula:
Wherein, N indicates the quantity of the standard absorption coefficient spectral line and the actual absorption coefficient spectral line intermediate frequency rate point.
When the quantity of the standard sample point is one, A1kIndicate standard absorption of the standard sample o'clock at k-th of Frequency point
Coefficient；When the quantity of the standard sample point is multiple, A1kIndicate multiple standard samples o'clock at k-th of Frequency point
Standard absorption coefficient average value；A2kIndicate actual absorption coefficient of the sampled point to be measured at k-th of Frequency point.
The difference value D is bigger, then shows that the degree of aging of the insulator 100 is higher.It described to be measured is adopted in conjunction with all
The corresponding difference value D of sampling point can determine the insulator 100 in the degree of aging of different location.
In another embodiment, the average value for calculating the corresponding difference value D of all sampled points to be measured, then may be used
The whole degree of aging of the insulator 100 is determined according to the average value.It further, can also be by the insulator 100
Whole degree of aging be compared with the degree of aging of the entirety of other insulators.
The appraisal procedure of the Ageing of Insulators degree provided by the invention has the advantage that using different material to Terahertz
The specific spectral response characteristic of wave measures the actual absorption coefficient of the insulator 100, and by the actual absorption coefficient with
Standard absorption coefficients comparison determines its degree of aging, and the appraisal procedure of the Ageing of Insulators degree is easy to operate, test result
Accurately.
Embodiment of above is only to illustrate the technical solution of the embodiment of the present invention rather than limits, although referring to above preferable
The embodiment of the present invention is described in detail in embodiment, those skilled in the art should understand that, it can be to this hair
The technical solution of bright embodiment is modified or equivalent replacement should not all be detached from the embodiment of the present invention technical solution spirit and
Range.
Claims (8)
1. a kind of appraisal procedure of the Ageing of Insulators degree, which comprises the following steps:
Multiple sampled points to be measured are chosen from the insulator；
Obtain reality of the insulator under multiple Frequency points that the sampled point to be measured is under THz wave transmission mode
Absorption coefficient；And
The actual absorption coefficient of the sampled point to be measured is made comparisons with standard absorption coefficient, so that it is determined that the insulator is old
Change degree.
2. the appraisal procedure of the Ageing of Insulators degree as described in claim 1, which is characterized in that the insulator includes a core
Stick and a sheath, the sheath coat the plug, and the sheath is including a body and from the body to far from described
Multiple extensions that the direction of plug extends to form, outer surface and the extension of the sampled point to be measured selected from the body
The outer surface in portion.
3. the appraisal procedure of the Ageing of Insulators degree as claimed in claim 2, which is characterized in that the standard absorption coefficient is
To being tested to obtain under multiple Frequency points of at least standard sample point under THz wave transmission mode, each standard sample
Outer surface of the point in the middle part of the body and apart from the body is greater than the position of a preset distance.
4. the appraisal procedure of the Ageing of Insulators degree as claimed in claim 3, which is characterized in that when the standard sample point
When quantity is one, absorption coefficient of the standard sample point under multiple Frequency points is the standard absorption coefficient.
5. the appraisal procedure of the Ageing of Insulators degree as claimed in claim 3, which is characterized in that when the standard sample point
When quantity is multiple, the standard sample point is chosen along the circumferencial direction of the body, is existed by calculating the standard sample point
The average value of absorption coefficient under each Frequency point obtains absorption coefficient of the standard sample point under the multiple Frequency point,
To obtain the standard absorption coefficient.
6. the appraisal procedure of the Ageing of Insulators degree as described in claim 1, which is characterized in that the thickness of the sampled point to be measured
Degree is no more than 1 millimeter.
7. the appraisal procedure of the Ageing of Insulators degree as described in claim 1, which is characterized in that by the sampled point to be measured
Actual absorption coefficient is made comparisons with the standard absorption coefficient
The actual absorption coefficient of the standard absorption coefficient and the sampled point to be measured at each Frequency point is made the difference and is taken again
Quadratic sum obtains a difference value；And
Determine the insulator in the degree of aging of different location in conjunction with the corresponding difference value of all sampled points to be measured.
8. the appraisal procedure of the Ageing of Insulators degree as described in claim 1, which is characterized in that by the sampled point to be measured
Actual absorption coefficient is made comparisons with the standard absorption coefficient
The actual absorption coefficient of the standard absorption coefficient and the sampled point to be measured at each Frequency point is made the difference and is taken again
Quadratic sum obtains a difference value；And
Calculate the average value of the corresponding difference value of all sampled points to be measured, and according to the average value determine it is described absolutely
The degree of aging of edge entirety.
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| CN201910375609.XA CN110261343A (en) | 2019-05-07 | 2019-05-07 | The appraisal procedure of the Ageing of Insulators degree |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910375609.XA CN110261343A (en) | 2019-05-07 | 2019-05-07 | The appraisal procedure of the Ageing of Insulators degree |
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| Publication Number | Publication Date |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104237157A (en) * | 2014-09-28 | 2014-12-24 | 首都师范大学 | Method for utilizing terahertz time-domain spectroscopy technology to detect amino acid content in grain |
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| CN104897604A (en) * | 2015-04-28 | 2015-09-09 | 中国石油大学(北京) | Terahertz time-domain spectroscopy-based method for detection of content of methanol in methanol gasoline |
| CN108195866A (en) * | 2018-01-08 | 2018-06-22 | 国网河北省电力有限公司电力科学研究院 | A kind of determination method of composite insulator silicon rubber degree of aging |
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| CN104237157A (en) * | 2014-09-28 | 2014-12-24 | 首都师范大学 | Method for utilizing terahertz time-domain spectroscopy technology to detect amino acid content in grain |
| CN104897604A (en) * | 2015-04-28 | 2015-09-09 | 中国石油大学(北京) | Terahertz time-domain spectroscopy-based method for detection of content of methanol in methanol gasoline |
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Application publication date: 20190920 |
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