CN114397266A - Composite insulator aging detection method and device based on terahertz spectrum - Google Patents
Composite insulator aging detection method and device based on terahertz spectrum Download PDFInfo
- Publication number
- CN114397266A CN114397266A CN202210043505.0A CN202210043505A CN114397266A CN 114397266 A CN114397266 A CN 114397266A CN 202210043505 A CN202210043505 A CN 202210043505A CN 114397266 A CN114397266 A CN 114397266A
- Authority
- CN
- China
- Prior art keywords
- aging
- time
- terahertz
- composite insulator
- domain
- 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.)
- Pending
Links
- 230000032683 aging Effects 0.000 title claims abstract description 138
- 239000002131 composite material Substances 0.000 title claims abstract description 98
- 239000012212 insulator Substances 0.000 title claims abstract description 97
- 238000001514 detection method Methods 0.000 title claims abstract description 26
- 238000001228 spectrum Methods 0.000 title claims abstract description 20
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 56
- 238000000034 method Methods 0.000 claims abstract description 9
- 238000004611 spectroscopical analysis Methods 0.000 claims description 10
- 230000002431 foraging effect Effects 0.000 claims description 7
- 230000003595 spectral effect Effects 0.000 claims description 6
- 238000004458 analytical method Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 2
- 239000000523 sample Substances 0.000 description 34
- 238000010521 absorption reaction Methods 0.000 description 14
- 239000004945 silicone rubber Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000000862 absorption spectrum Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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]
-
- 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
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
-
- 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
- G01N21/3563—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using infrared light for analysing solids; Preparation of samples therefor
- G01N2021/3572—Preparation of samples, e.g. salt matrices
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Health & Medical Sciences (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)
- Toxicology (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
Abstract
The application provides a composite insulator aging detection method and device based on terahertz spectrum, and the method mainly comprises the steps of taking a silicon rubber composite insulator as a sample; aging the sample at different times to obtain a corresponding terahertz time-domain spectrogram, and establishing a relation between the terahertz time-domain spectrogram and aging time; storing the relationship between the terahertz time-domain spectrogram and aging time into a database; acquiring a Hertz time domain spectrogram of the silicon rubber composite insulator to be detected; searching data of corresponding aging time in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected; the degree of aging was analyzed. The aging degree is detected through the Hertz time domain spectrum of the obtained silicon rubber, so that the problems that the detection difficulty is large and the operation is complex in the prior art are solved, and the safe and reliable operation of the composite insulator in use is guaranteed.
Description
Technical Field
The application belongs to the technical field of composite insulator detection, and particularly relates to a composite insulator aging detection method and device based on terahertz spectrum.
Background
The silicon rubber composite insulator has the advantages of light weight, high strength, convenience in manufacturing and installation, pollution flashover resistance and the like, is widely applied to power transmission lines, not only prevents large-scale pollution flashover accidents, but also reduces specific work such as operation and maintenance in polluted areas to a great extent, and obtains good operation effect.
In engineering, the insulation aging state of the composite insulator is generally evaluated by measuring the change of physicochemical and electrical performance parameters caused by the aging of the umbrella skirt of the insulator. The physical and chemical parameters mainly comprise visual inspection of surface state, hydrophobic water spray grading, hydrophobic angle, tensile strength or hardness test, Fourier infrared spectrum analysis, scanning electron microscope and the like. However, the physicochemical parameters are not only related to the aging degree of the composite insulator, but also easily affected by the contamination degree of the surface of the material, and only can qualitatively analyze the surface morphology of the insulator material, and the reliability of quantitative analysis is not high. Meanwhile, multiple measurement methods of related measurement are combined, the method is complex, and damage is caused to a sample.
Disclosure of Invention
The application provides a composite insulator aging detection method and device based on terahertz spectrum, and aims to solve the problems that in the prior art, the difficulty in detecting the aging of a silicon rubber composite insulator is high and the operation is complex.
On one hand, the application provides a composite insulator aging detection method based on terahertz spectrum, and the method comprises the following steps:
s100, taking the silicon rubber composite insulator as a sample;
s200, aging the sample at different times to obtain a corresponding terahertz time-domain spectrogram, and establishing a relation between the terahertz time-domain spectrogram and aging time;
s300, storing the relation between the terahertz time-domain spectrogram and aging time into a database;
s400, acquiring a Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
s500, searching data of corresponding aging time in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
and S600, analyzing the aging degree of the glass.
The optimization method further comprises the following steps:
after S300, before S400, further comprising:
s310, aging is carried out on the sample at different temperatures, a corresponding terahertz time-domain spectrogram is obtained, and the relation between the terahertz time-domain spectrogram and the aging temperature is established;
s320, storing the relationship between the terahertz time-domain spectrogram and the aging temperature into a database;
after S500, before S600, the method further includes:
s510, searching data of corresponding aging temperature in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
and optimally, acquiring a terahertz time-domain spectrogram:
the silicon rubber is detected through a transmission type or reflection type terahertz time-domain spectrograph, corresponding terahertz time-domain spectral data are obtained, and a time-domain spectrogram is drawn through drawing software.
Optimally, the terahertz wave ranges from 0.2THz to 2.0 THz.
On the other hand, this application has proposed a composite insulator aging detection device based on terahertz spectrum includes:
the sampling module is used for taking the silicon rubber composite insulator as a sample;
the time aging relation module is used for aging the samples at different times to obtain corresponding terahertz time-domain spectrograms and establishing the relation between the terahertz time-domain spectrograms and the aging time;
the time database module is used for storing the relationship between the terahertz time-domain spectrogram and the aging time into a database;
acquiring a silicon rubber composite insulating submodule to be detected and acquiring a Hertz time domain spectrogram of a silicon rubber composite insulator to be detected;
the aging time data module searches corresponding aging time data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
and the analysis module analyzes the aging degree of the LED lamp.
Preferably, the apparatus further comprises:
the temperature aging relation module is used for aging a plurality of different temperatures of the sample to obtain a corresponding terahertz time-domain spectrogram and establishing the relation between the terahertz time-domain spectrogram and the aging temperature;
the temperature database module is used for storing the relationship between the terahertz time-domain spectrogram and the aging temperature into a database;
and the aging temperature data module searches corresponding aging temperature data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
The beneficial effect of this application is:
according to the technical scheme, the composite insulator aging detection method and device based on the terahertz spectrum are provided, and the method mainly comprises the steps of taking a silicon rubber composite insulator as a sample; aging the sample at different times to obtain a corresponding terahertz time-domain spectrogram, and establishing a relation between the terahertz time-domain spectrogram and aging time; storing the relationship between the terahertz time-domain spectrogram and aging time into a database; acquiring a Hertz time domain spectrogram of the silicon rubber composite insulator to be detected; searching data of corresponding aging time in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected; the degree of aging was analyzed. The aging degree is detected through the Hertz time domain spectrum of the obtained silicon rubber, so that the problems that the detection difficulty is large and the operation is complex in the prior art are solved, and the safe and reliable operation of the composite insulator in use is guaranteed.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without any creative effort.
Fig. 1 is a flowchart of a composite insulator aging detection method based on terahertz spectroscopy according to the present application;
FIG. 2 is a flow chart of another composite insulator aging detection method based on terahertz spectroscopy according to the present application;
FIG. 3 is a terahertz time-domain spectrogram of a composite insulator according to the present application;
FIG. 4 is a terahertz time-domain spectrum of a composite insulator sample with different aging times according to the present application;
FIG. 5 is an absorption spectrum of a composite insulator with different aging times according to the present application;
FIG. 6 is a schematic diagram of a composite insulator aging detection device based on terahertz spectroscopy according to the present application;
fig. 7 is a schematic view of another composite insulator aging testing device based on terahertz spectrum according to the present application.
Detailed Description
Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following examples do not represent all embodiments consistent with the present application.
Referring to fig. 1, a flowchart of a composite insulator aging detection method based on terahertz spectroscopy is provided.
A composite insulator aging detection method based on terahertz spectrum comprises the following steps:
and S100, taking the silicon rubber composite insulator as a sample.
The samples were several silicone rubbers used as composite insulators, which were fabricated to have shapes and thicknesses, and distinguished by reference numerals.
S200, aging the sample at different times to obtain a corresponding terahertz time-domain spectrogram, and establishing a relation between the terahertz time-domain spectrogram and aging time.
This step was used as a time-variant control experiment, with other factors being constant, such as temperature and oxygen content of the air. Specifically, in the selection of each time period, several hours or several days can be selected to adapt to the purpose of various aging tests of the silicon rubber of the composite insulator. For example, the test is aimed at the aging degree of a new silicone rubber composite insulator within one month, and two days can be selected as a time period as an interval, wherein the time period is thirty days in total, and the time period is from zero days to thirty days, and the time period is sixteen in total. The number of samples may be several. Specifically, the obtaining of the corresponding terahertz time-domain spectrogram is to detect the sample through a transmission-type or reflection-type terahertz time-domain spectrometer to obtain corresponding terahertz time-domain spectral data, draw the time-domain spectrogram through drawing software, and analyze the relationship between the terahertz time-domain spectrogram and the aging time.
S300, storing the relation between the terahertz time-domain spectrogram and the aging time into a database.
It should be noted that the database may be a computer database in practical application. And storing the relationship between the terahertz time-domain spectrogram obtained in the step S200 and the aging time into a database so as to be convenient for later calling in use.
S400, acquiring a Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
In S400, the hertz time domain spectrogram of the silicone rubber composite insulator to be tested can be obtained by detecting the silicone rubber by a transmission-type or reflection-type terahertz time domain spectrometer to obtain corresponding terahertz time domain spectral data, and drawing the time domain spectrogram by drawing software.
And S500, searching corresponding aging time data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
And S600, analyzing the aging degree.
The obtained Hertz time domain spectrogram of the silicon rubber composite insulator to be detected can find corresponding aging time data in a database, so that the silicon rubber composite insulator to be detected can be directly analyzed as a quantifiable parameter. For example, there is a silicone rubber composite insulator to be evaluated for aging degree, and through data analysis, an environment corresponding to 20 ℃ is aged for 3 years, while the same silicone rubber composite insulator has a service life of 2 years in an environment of 20 ℃. After parameter analysis, the silicone rubber composite insulator is seriously aged and needs to be replaced. By directly obtaining the conclusion through the quantified parameters, the rapid and accurate detection is realized.
An optimized embodiment, referring to fig. 2, after S300, before S400, further includes:
s310, aging is carried out on the sample at different temperatures, a corresponding terahertz time-domain spectrogram is obtained, and the relation between the terahertz time-domain spectrogram and the aging temperature is established.
This step was used as a control experiment with temperature as a variable, and other factors were unchanged, such as time and oxygen content of air. Specifically, the temperatures may be equal to each other in the same indoor or outdoor environment at the same time. For example, in the same indoor place, a plurality of samples are respectively between 0 ℃ and 20 ℃, each 2 ℃ is taken as an equal difference, a total of eleven groups are provided, in the same environment, the samples are oxidized for ten hours, and then a relationship between a terahertz time-domain spectrogram and an aging temperature is established. . Specifically, the obtaining of the corresponding terahertz time-domain spectrogram is to detect the sample through a transmission-type or reflection-type terahertz time-domain spectrometer to obtain corresponding terahertz time-domain spectral data, draw the time-domain spectrogram through drawing software, and analyze the relationship between the terahertz time-domain spectrogram and the aging time.
And S320, storing the relationship between the terahertz time-domain spectrogram and the aging temperature into a database.
After S500, before S600, the method further includes:
and S510, searching corresponding aging temperature data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
One specific embodiment may be that, a certain shape of silicone rubber is aged under the conditions of 48h and UV-A95%, the aging temperature is respectively aged at 60 ℃, 80 ℃, 100 ℃, 120 ℃ and 160 ℃, a terahertz time-domain spectrometer is used for sequentially carrying out time-domain spectroscopy experiments on 5 groups of experimental samples, the experiment is repeated for 10 times, and an average value is obtained after multiple measurements are carried out, so that noise reduction is realized. And extracting 1.15625THz absorption peak value, and establishing aging time and peak value functional relation to form corresponding database. And testing samples under the same aging condition and different aging time, predicting through the established database, and comparing with an actual value, wherein the experimental verification result is shown in the table below.
| Sample (I) | Predicting aging temperature | Actual aging |
| 1 | 14.8℃ | 150 |
| 2 | 129.9℃ | 130℃ |
Another specific embodiment may be that, a certain shape of silicone rubber is aged under the conditions of a temperature of 90 ℃ and a UV-a 95% for 24h, 48h, 72h, and 96h, respectively, a terahertz time-domain spectrometer is used to sequentially perform time-domain spectroscopy experiments on four groups of experimental samples, the experiment is repeated for 10 times, and an average value is obtained after multiple measurements are performed, thereby achieving noise reduction.
The composite insulator sample with different aging times is detected by using a transmission type terahertz time-domain spectrograph, a terahertz spectrum passing through nitrogen is used as a reference signal before the sample is detected, and a terahertz spectrum of the composite insulator with different aging times is used as a sample signal. Referring to fig. 3, a terahertz time-domain spectrogram of a composite insulator is shown, which is a terahertz time-domain waveform measured through a nitrogen environment and composite insulator samples with different aging times. The attenuation of the composite insulator sample is caused by that the absorption of the composite insulator sample to THz wave is larger than that of nitrogen, the time delay is determined by refractive index, and the peak value of the sample signal is delayed by about 10ps relative to the peak value of the reference signal.
Referring to fig. 4, for the terahertz time-domain spectrograms of the composite insulator samples with different aging times, as the aging time of the composite insulator increases, the peak value of the time domain gradually increases, which is because the moisture content in the sample increases, the absorption and scattering of the terahertz pulse are enhanced, and the transmission intensity is weakened; due to the fact that the time delay of the sample signal is smaller when the aging time of the composite insulator is increased, and the thickness of the composite insulator sample is 4mm when the aging time is different, the time delay of the composite insulator sample is caused by the fact that the refractive indexes of the samples with different aging degrees in the terahertz wave band are different. The larger the refractive index of the composite insulator sample, the larger the time delay.
The THz absorption spectra of the composite insulators with different aging times can be rapidly obtained through the frequency domain amplitude values of the composite insulators with different aging times and the frequency domain amplitude value of the reference sample, and the absorption spectra of the composite insulators with different aging times are shown in the following figure. The calculation formula is shown as follows;
where ω is the spectral frequency; a. theTHz-the frequency domain amplitude of the sample signal; a. theref-the frequency domain amplitude of the reference signal; a (ω) -the absorption coefficient of the sample.
Referring to fig. 5, an absorption spectrum of a composite insulator with different aging times is shown. It can be seen from the absorption spectrum that the absorption coefficient of the sample changes regularly with increasing frequency. When a substance absorbs terahertz waves at a certain frequency due to molecular vibration, rotation and the like of the substance, an absorption peak is generated at the frequency. The different absorption peaks also have superposition phenomena, so that a more complex absorption curve appears. The graph shows that the absorption curves of the composite insulators with different aging times basically show the same change trend, the absorption coefficient is basically kept stable within a frequency range of 0.2-1 THz, and no obvious absorption peak exists; the highest absorption peak appears at 1.15625THz, and the absorption coefficient of the composite insulator at the frequency is gradually reduced along with the increase of aging time, because ultraviolet rays can break partial chemical bonds of the silicon rubber material high molecular polymer due to the shorter wavelength and larger photon energy of the ultraviolet rays, the original symmetrical long-chain molecular structure is changed, the material surface substance structure is changed, and the phenomenon that the surface of the composite insulator is cracked, pulverized, increased in surface roughness and the like is directly shown. Therefore, the composite insulator with longer aging time absorbs the terahertz waves more weakly.
And extracting 1.15625THz absorption peak value, and establishing aging time and peak value functional relation to form corresponding database. And testing samples under the same aging condition and different aging time, predicting through the established database, and comparing with an actual value, wherein the experimental verification result is shown in the table below.
| Sample (I) | Predicting aging time | Actual aging |
| 1 | 25.9 | 26 |
| 2 | 33.1 | 33 |
On the other hand, referring to fig. 6, the present application provides a composite insulator aging detection apparatus based on terahertz spectrum, including:
the sampling module is used for taking the silicon rubber composite insulator as a sample;
the time aging relation module is used for aging the samples at different times to obtain corresponding terahertz time-domain spectrograms and establishing the relation between the terahertz time-domain spectrograms and the aging time;
the time database module is used for storing the relationship between the terahertz time-domain spectrogram and the aging time into a database;
acquiring a silicon rubber composite insulating submodule to be detected and acquiring a Hertz time domain spectrogram of a silicon rubber composite insulator to be detected;
the aging time data module searches corresponding aging time data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
and the analysis module analyzes the aging degree of the LED lamp.
Optimally, referring to fig. 7, the apparatus further comprises:
the temperature aging relation module is used for aging a plurality of different temperatures of the sample to obtain a corresponding terahertz time-domain spectrogram and establishing the relation between the terahertz time-domain spectrogram and the aging temperature;
the temperature database module is used for storing the relationship between the terahertz time-domain spectrogram and the aging temperature into a database;
and the aging temperature data module searches corresponding aging temperature data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
The application provides a composite insulator aging detection method and device based on terahertz spectrum, and the method mainly comprises the steps of taking a silicon rubber composite insulator as a sample; aging the sample at different times to obtain a corresponding terahertz time-domain spectrogram, and establishing a relation between the terahertz time-domain spectrogram and aging time; storing the relationship between the terahertz time-domain spectrogram and aging time into a database; acquiring a Hertz time domain spectrogram of the silicon rubber composite insulator to be detected; searching data of corresponding aging time in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected; the degree of aging was analyzed. The aging degree is detected through the Hertz time domain spectrum of the obtained silicon rubber, so that the problems that the detection difficulty is large and the operation is complex in the prior art are solved, and the safe and reliable operation of the composite insulator in use is guaranteed.
The embodiments provided in the present application are only a few examples of the general concept of the present application, and do not limit the scope of the present application. Any other embodiments extended according to the scheme of the present application without inventive efforts will be within the scope of protection of the present application for a person skilled in the art.
Claims (6)
1. A composite insulator aging detection method based on terahertz spectrum is characterized by comprising the following steps:
s100, taking the silicon rubber composite insulator as a sample;
s200, aging the sample at different times to obtain a corresponding terahertz time-domain spectrogram, and establishing a relation between the terahertz time-domain spectrogram and aging time;
s300, storing the relation between the terahertz time-domain spectrogram and aging time into a database;
s400, acquiring a Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
s500, searching data of corresponding aging time in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
and S600, analyzing the aging degree of the glass.
2. The composite insulator aging detection method based on terahertz spectroscopy as claimed in claim 1, further comprising:
after S300, before S400, further comprising:
s310, aging is carried out on the sample at different temperatures, a corresponding terahertz time-domain spectrogram is obtained, and the relation between the terahertz time-domain spectrogram and the aging temperature is established;
s320, storing the relationship between the terahertz time-domain spectrogram and the aging temperature into a database;
after S500, before S600, the method further includes:
and S510, searching corresponding aging temperature data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
3. The composite insulator aging detection method based on terahertz spectroscopy as claimed in claim 1 or 2, wherein the step of obtaining the terahertz time-domain spectrogram is as follows:
the silicon rubber is detected through a transmission type or reflection type terahertz time-domain spectrograph, corresponding terahertz time-domain spectral data are obtained, and a time-domain spectrogram is drawn through drawing software.
4. The composite insulator aging detection method based on terahertz spectroscopy as claimed in claim 3, wherein the terahertz waves range from 0.2THz to 2.0 THz.
5. The utility model provides a composite insulator detection device that ages based on terahertz spectrum which characterized in that, the device includes:
the sampling module is used for taking the silicon rubber composite insulator as a sample;
the time aging relation module is used for aging the samples at different times to obtain corresponding terahertz time-domain spectrograms and establishing the relation between the terahertz time-domain spectrograms and the aging time;
the time database module is used for storing the relationship between the terahertz time-domain spectrogram and the aging time into a database;
acquiring a silicon rubber composite insulating submodule to be detected and acquiring a Hertz time domain spectrogram of a silicon rubber composite insulator to be detected;
the aging time data module searches corresponding aging time data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected;
and the analysis module analyzes the aging degree of the LED lamp.
6. The composite insulator aging detection device based on terahertz spectroscopy according to claim 1, further comprising:
the temperature aging relation module is used for aging a plurality of different temperatures of the sample to obtain a corresponding terahertz time-domain spectrogram and establishing the relation between the terahertz time-domain spectrogram and the aging temperature;
the temperature database module is used for storing the relationship between the terahertz time-domain spectrogram and the aging temperature into a database;
and the aging temperature data module searches corresponding aging temperature data in a database according to the Hertz time domain spectrogram of the silicon rubber composite insulator to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210043505.0A CN114397266A (en) | 2022-01-14 | 2022-01-14 | Composite insulator aging detection method and device based on terahertz spectrum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210043505.0A CN114397266A (en) | 2022-01-14 | 2022-01-14 | Composite insulator aging detection method and device based on terahertz spectrum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114397266A true CN114397266A (en) | 2022-04-26 |
Family
ID=81230357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210043505.0A Pending CN114397266A (en) | 2022-01-14 | 2022-01-14 | Composite insulator aging detection method and device based on terahertz spectrum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114397266A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297300A (en) * | 2023-02-13 | 2023-06-23 | 华南理工大学 | Composite insulator core rod aging evaluation method, device and storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624712A (en) * | 2021-08-16 | 2021-11-09 | 云南电网有限责任公司电力科学研究院 | Insulator contamination degree detection method and device based on terahertz time-domain spectroscopy |
-
2022
- 2022-01-14 CN CN202210043505.0A patent/CN114397266A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113624712A (en) * | 2021-08-16 | 2021-11-09 | 云南电网有限责任公司电力科学研究院 | Insulator contamination degree detection method and device based on terahertz time-domain spectroscopy |
Non-Patent Citations (2)
| Title |
|---|
| 于是乎 等: "热氧老化对XLPE太赫兹频域介电特性的影响", 绝缘材料, vol. 53, no. 2, pages 3 * |
| 张中浩;梅红伟;刘建军;伍旺松;王黎明;李岚欣;江怀远;袁光宇;: "基于太赫兹波的复合绝缘子界面检测研究", 中国电机工程学报, no. 03 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116297300A (en) * | 2023-02-13 | 2023-06-23 | 华南理工大学 | Composite insulator core rod aging evaluation method, device and storage medium |
| CN116297300B (en) * | 2023-02-13 | 2024-03-19 | 华南理工大学 | Composite insulator core rod aging evaluation method, device and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10209197B2 (en) | Method for inspecting aging state of silicone rubber composite insulating material | |
| CN102230893A (en) | Quantitative identification method of composite insulator umbrella skirt aging | |
| CN104749132A (en) | Method for measuring content of azodicarbonamide in flour | |
| CN104713844A (en) | Method for evaluating composite insulator silicone rubber aging degree based on Fourier infrared spectroscopy | |
| CN114397266A (en) | Composite insulator aging detection method and device based on terahertz spectrum | |
| CN111999259A (en) | Composite insulator aging degree evaluation method based on infrared spectrum | |
| CN108918446A (en) | A kind of super low concentration sulfur dioxide ultraviolet difference feature extraction algorithm | |
| CN103134761B (en) | Detect ultraviolet spectrum detection system and the data processing method of SO2 in GIS | |
| CN109991206B (en) | Method for measuring total alcohol content of alcohol gasoline based on partial least square method | |
| CN112765776B (en) | Crosslinked polyethylene cable insulation aging state assessment method and system | |
| CN104048909B (en) | A kind of simulate the test method that silicone rubber composite bushing is aging | |
| CN109709060B (en) | Method for measuring asphalt softening point, penetration degree and mass loss | |
| CN112034318A (en) | Quantitative evaluation method for aging degree of composite insulator | |
| CN105784630B (en) | A kind of silicon rubber glue detection method of content based on infrared spectrum analysis | |
| CN111965131A (en) | Composite insulator aging evaluation method based on infrared spectrum characteristic peak ratio method | |
| CN110658266A (en) | Method for quantitatively identifying cracking degree of crude oil | |
| CN112198136A (en) | Nondestructive detection method for turbine oil acid value based on mid-infrared spectrum | |
| CN103499390A (en) | Sunlight irradiation monitoring and analysis method based on polymer material ageing test | |
| CN113624712A (en) | Insulator contamination degree detection method and device based on terahertz time-domain spectroscopy | |
| CN113624715A (en) | Method for analyzing aged starch | |
| CN115420708B (en) | Near-infrared nondestructive detection method for capsaicin substances in dry peppers | |
| RU2775165C1 (en) | Method for differentiation of fresh mineral transformer oil from regenerated | |
| Zhao et al. | Study on the influence of semi-conductive layer on near-infrared spectrum of cable insulation | |
| CN113624711A (en) | Method for evaluating aging state of cable insulating material | |
| Liu et al. | Analysis of infrared spectrum characteristic and variation trend of SF 6 PD decomposition |
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 |