CN117007920A - Method and system for judging and disposing heating reason of composite insulator - Google Patents
Method and system for judging and disposing heating reason of composite insulator Download PDFInfo
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- CN117007920A CN117007920A CN202310867733.4A CN202310867733A CN117007920A CN 117007920 A CN117007920 A CN 117007920A CN 202310867733 A CN202310867733 A CN 202310867733A CN 117007920 A CN117007920 A CN 117007920A
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- 239000012212 insulator Substances 0.000 title claims abstract description 207
- 239000002131 composite material Substances 0.000 title claims abstract description 160
- 238000010438 heat treatment Methods 0.000 title claims abstract description 116
- 238000000034 method Methods 0.000 title claims abstract description 47
- 230000007547 defect Effects 0.000 claims abstract description 13
- 238000012360 testing method Methods 0.000 claims description 67
- 238000009529 body temperature measurement Methods 0.000 claims description 39
- 230000020169 heat generation Effects 0.000 claims description 18
- 238000009825 accumulation Methods 0.000 claims description 10
- 230000007613 environmental effect Effects 0.000 claims description 8
- 238000013102 re-test Methods 0.000 claims description 8
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 7
- 230000008859 change Effects 0.000 abstract description 4
- 238000002329 infrared spectrum Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/48—Thermography; Techniques using wholly visual means
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- 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
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J2005/0077—Imaging
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- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Insulators (AREA)
- Testing Relating To Insulation (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a method and a system for judging and disposing a heating reason of a composite insulator. The existing method judges the heating reason of the composite insulator through the surface temperature distribution characteristics of the composite insulator, the method relies on a composite insulator heating case sample obtained on site, and when the coverage of the sample is limited, the accuracy of the method is affected. Aiming at the on-site composite insulator heating defect, the invention firstly obtains a composite insulator heating map under the on-site environment with the high humidity of more than 85% and the environment with the low humidity of less than 70%, further judges the heating type according to the change of the heating position and the heating temperature difference of the composite insulator under the environment with different humidity, and further combines whether the surface sheath is intact or not and the surface ultraviolet discharge condition to provide a disposal method. The invention avoids the situation that the heating cause judgment by using the surface temperature distribution depends on the prior sample, and can improve the accuracy of the on-site heating cause judgment.
Description
Technical Field
The invention belongs to the field of operation and maintenance of power transmission lines, relates to judgment and treatment of a heating reason of a composite insulator on site, and particularly relates to a method and a system for judging the heating reason of the composite insulator by considering the position and temperature difference change of a heating area of the composite insulator under different humidity, and a targeted treatment method is provided according to the heating reason.
Background
The consumption of the composite insulator of the power grid equipment is huge, and the composite insulator is generally used for the linear string in the line design due to the heavy pollution in coastal areas. Under the meteorological process action of typhoons and the like, the surface pollution of the composite insulator can be suddenly increased in a short time sometimes, so that the surface of the insulator is heated. Along with the extension of the running time, partial composite insulator sheath is damped, and polarization loss heating occurs under the action of an alternating current electric field. Part of insulators are damaged due to missing defects in manufacturing or interface problems in operation, so that core rods of the insulators are damaged in a decaying mode, abnormally increased polarization loss and partial discharge are generated, and the insulators are heated. The influence of different types of heating on the running performance of the insulator is different, the core rod is crisp, the mechanical performance of the core rod is quickly reduced, the influence of the sheath wetting on the running performance of the insulator is not obvious, and the accumulated dirt heating indicates that the insulator has the risks of surface flashover and long-term electric erosion damage to the sheath. Therefore, the heating reason of the on-site composite insulator is necessary to be judged, and a foundation is laid for scientific and reasonable treatment decision.
At present, few methods for judging the on-site heating reasons of the composite insulator exist. The method is characterized in that the method relies on a composite insulator heating case sample obtained on site, and when the coverage of the sample is limited, the accuracy of the method is affected. The insulator temperature distribution characteristics are related to voltage grades, and because the on-site pollution and heat generation and the internal defect heat generation are mainly carried out by using 220kV to 500kV insulators, the 1000kV and 110kV insulator sub-spectrums are fewer, the judgment of the heat generation reason of the composite insulator on a part of voltage grade insulators through the composite insulator surface temperature distribution characteristics is more difficult.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects in the prior art, and based on the characteristics that the sheath is damped, the surface dirt heating and the environmental humidity are closely related, the internal defect heating and the environmental humidity are relatively weak, and the sheath is damped and the surface dirt heating has differences in heating positions, the invention provides a method and a system for judging the heating reason of the composite insulator by considering the heating region positions and the temperature difference changes of the composite insulator under different humidities, and provides a targeted treatment method according to the heating reason.
For this purpose, the invention adopts a technical scheme as follows: a method for judging and disposing the heating reason of a composite insulator comprises the following steps:
a) Carrying out infrared test and ultraviolet test on the tested composite insulator under the environment that the relative humidity exceeds 85% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and an ultraviolet test video;
b) Carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and a visible light image of a composite insulator core rod sheath;
c) Combining the infrared temperature measurement images obtained in the steps a) and b), and comparing, analyzing and judging the heating reason of the composite insulator;
d) Checking the visible light image of the composite insulator core rod sheath, and judging whether the sheath is damaged or not;
e) Analyzing the ultraviolet test video of the composite insulator to obtain the ratio of the length of the ultraviolet discharge covered area of the surface of the composite insulator to the whole length of the composite insulator;
f) And comprehensively utilizing the damage state of the sheath and the ultraviolet test video to provide a composite insulator treatment method.
Aiming at the on-site composite insulator heating defect, the invention firstly obtains a composite insulator heating map under the on-site environment with the humidity higher than 85% and the humidity lower than 70%, further judges the heating type according to the change of the heating position and the heating temperature difference of the composite insulator under different humidity environments, and further combines whether the surface sheath is intact or not and the surface ultraviolet discharge condition to provide a disposal method. The judgment of the heating cause is mainly from the physical mechanism of heating, and can not depend on a field test sample.
Further, in step b), the composite insulator mandrel sheath image should not be affected by the umbrella skirt shielding.
Further, in the step c), the relation between the heating reason of the composite insulator and the heating position and temperature difference under different environmental parameters is shown in Table 1,
table 1 on-site composite insulator heating cause judging table
And judging the heating reason of the tested composite insulator according to the table.
Further, in step f), the composite insulator handling method is as follows: when the heating reason of the insulator is surface dirt, the sheath is complete, and the surface ultraviolet discharge length is shorter than 1/3 of the structure height of the composite insulator, the insulator performs tracking retest according to a period of one month; when the heating source is dirt accumulation and heat is generated and the sheath is damaged, the composite insulator should be replaced; when the heating source is dirt accumulation and heating and the ultraviolet discharge length of the surface of the composite insulator exceeds 1/3 of the structural height of the composite insulator, the insulator should be stopped in emergency.
Further, in step f), when the cause of the insulator heating is a defect inside the core rod, the composite insulator should be replaced.
Further, in step f), when the heating reason of the insulator is that the sheath is wet, the composite insulator performs tracking retest according to a period of one month.
The invention adopts another technical scheme that: a composite insulator heating cause judgment and disposal system, comprising:
the infrared temperature measurement image and ultraviolet test video acquisition unit comprises an infrared temperature measurement image and ultraviolet test video acquisition unit: carrying out infrared test and ultraviolet test on the tested composite insulator under the environment that the relative humidity exceeds 85% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and an ultraviolet test video;
the infrared temperature measurement image and visible light image acquisition unit of the mandrel sheath comprises an infrared temperature measurement image acquisition unit: carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and a visible light image of a composite insulator core rod sheath;
a heating cause judgment unit: combining the infrared temperature measurement image and the infrared test video acquisition unit, and the infrared temperature measurement image acquired by the mandrel sheath visible light image acquisition unit, and comparing, analyzing and judging the heating reason of the composite insulator;
sheath breakage judgment unit: checking the visible light image of the composite insulator core rod sheath, and judging whether the sheath is damaged or not;
ultraviolet test video analysis unit: analyzing the ultraviolet test video of the composite insulator to obtain the ratio of the length of the ultraviolet discharge covered area of the surface of the composite insulator to the whole length of the composite insulator;
a treatment method acquisition unit: and comprehensively utilizing the damage state of the sheath and the ultraviolet test video to provide a composite insulator treatment method.
Compared with the prior art, the method has the following beneficial effects: according to the invention, the judgment of the heating reason is realized by utilizing the internal defects, surface dirt, the heating position of the sheath wetted and the heating change under different environmental humidity of the on-site composite insulator, the condition that the heating reason judgment by utilizing the surface temperature distribution depends on a priori samples is avoided, and the on-site heating reason judgment accuracy can be improved.
Drawings
FIG. 1 is a flow chart of a method for judging and disposing the heating cause of a composite insulator according to the present invention;
FIG. 2 is an infrared spectrum of a class A heat-generating insulator tested in a high humidity environment in accordance with an embodiment of the present invention;
FIG. 3 is an infrared spectrum of a class B heat generating insulator tested in a high humidity environment in accordance with an embodiment of the present invention;
FIG. 4 is an infrared spectrum of a class A heat generating insulator tested in a low humidity environment in accordance with an embodiment of the present invention;
FIG. 5 is an infrared spectrum of a class B heat generating insulator tested in a low humidity environment in accordance with an embodiment of the present invention;
fig. 6 is a block diagram of a system for judging and disposing of the cause of heat generation of the composite insulator according to the present invention.
Detailed Description
In order to enable those skilled in the art to better understand the technical scheme of the present invention, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood, however, that the detailed description is presented only to provide a better understanding of the invention, and should not be taken to limit the invention. In the description of the present invention, it is to be understood that the terminology used is for the purpose of description only and is not to be interpreted as indicating or implying relative importance.
Example 1
The embodiment is a method for judging and disposing a heating cause of a composite insulator, as shown in fig. 1, including the steps of:
a) Carrying out infrared test and ultraviolet test on the tested composite insulator under the environment that the relative humidity exceeds 85 percent and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and an ultraviolet test video;
b) Carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70 percent and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and a visible light image of a composite insulator core rod sheath;
c) Combining infrared temperature measurement images under different environments, and comparing, analyzing and judging the heating reason of the composite insulator;
d) Checking the visible light image of the composite insulator core rod sheath, and judging whether the sheath is damaged or not;
e) Analyzing the ultraviolet test video of the composite insulator to obtain the ratio of the length of the ultraviolet discharge covered area of the surface of the composite insulator to the whole length of the composite insulator;
f) And comprehensively utilizing the damage state of the sheath and the ultraviolet test video to provide a composite insulator treatment method.
In the step c), the relation between the heating reason of the composite insulator and the heating position and temperature difference under different environmental parameters is shown in table 1,
table 1 on-site composite insulator heating cause judging table
And judging the heating reason of the tested composite insulator according to the table.
Specifically, in step f), the composite insulator handling method is as follows: when the heating reason of the insulator is surface dirt, the sheath is complete, and the surface ultraviolet discharge length is shorter than 1/3 of the structure height of the composite insulator, the insulator performs tracking retest according to a period of one month; when the heating source is dirt accumulation and heat is generated and the sheath is damaged, the composite insulator should be replaced; when the heating source is pollution accumulation and heating and the ultraviolet discharge length of the surface of the composite insulator exceeds 1/3 of the structural height of the composite insulator, the insulator should be stopped in emergency; when the heating reason of the insulator is the internal defect of the core rod, the composite insulator should be replaced; when the heating reason of the insulator is that the sheath is wet, the composite insulator performs tracking retest according to a period of one month.
Taking a 220kV overhead line as an example, the method for judging the heating reason of the composite insulator of the line and providing a disposal method comprises the following specific steps:
1. carrying out infrared test and ultraviolet test on the composite insulator of the circuit under the environment with the relative humidity of more than 85 percent and the wind speed of not more than 1.5m/s, obtaining an infrared temperature measurement image and an ultraviolet test video, wherein the relative humidity of the actual test environment is 88 percent and the wind speed is 1m/s;
2. carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70% and the wind speed is not more than 1.5m/s, obtaining an infrared temperature measurement image and a visible light image of a core rod sheath of the composite insulator, wherein the actual relative humidity of the composite insulator is 65%, and the wind speed is 0.5m/s;
3. combining infrared temperature measurement images under different environments to carry out comparison analysis, and finding that 30 composite insulators generate heat in the first test, wherein 29 insulators generate heat at the high-voltage end part, namely a class A heating insulator, and 1 insulator heating area is positioned at a 3 rd-5 th umbrella, namely a class B heating insulator; in the second test, the temperature difference of the A-type heating insulator is obviously reduced by at least 2K, and the heating temperature difference and the heating area of the B-type heating insulator are kept stable. In combination with Table 1, it is judged that the heating of the composite insulator with the type A heating is caused by the moisture of the sheath, and the heating of the composite insulator with the type B heating is caused by the internal defect of the core rod;
4. checking the visible light image of the composite insulator core rod sheath, and confirming that the composite insulator sheath is not damaged;
5. analyzing the ultraviolet test video of the composite insulator, wherein the surface of the heating insulator has no ultraviolet discharge;
6. by comprehensively utilizing the information, the composite insulation treatment method of the line is determined as follows: the A-type insulator is subjected to tracking test, and 1B-type insulator is replaced.
Example 2
The embodiment is a system for judging and disposing the heating cause of a composite insulator, as shown in fig. 6, which is composed of an infrared temperature measurement image and ultraviolet test video acquisition unit, an infrared temperature measurement image and core rod sheath visible light image acquisition unit, a heating cause judgment unit, a sheath breakage judgment unit, an ultraviolet test video analysis unit and a disposal method acquisition unit.
The infrared temperature measurement image and ultraviolet test video acquisition unit comprises an infrared temperature measurement image and ultraviolet test video acquisition unit: and carrying out infrared test and ultraviolet test on the tested composite insulator under the environment that the relative humidity exceeds 85 percent and the wind speed is not more than 1.5m/s, and obtaining infrared temperature measurement images and ultraviolet test videos.
The infrared temperature measurement image and visible light image acquisition unit of the mandrel sheath comprises an infrared temperature measurement image acquisition unit: and carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and a visible light image of the composite insulator core rod sheath.
A heating cause judgment unit: and comparing, analyzing and judging the heating reason of the composite insulator by combining the infrared temperature measurement image and the infrared test video acquisition unit and the infrared temperature measurement image acquired by the infrared temperature measurement image and the core rod sheath visible light image acquisition unit.
In the heating reason judging unit, the relation between the heating reason of the composite insulator and the heating position and the temperature difference under different environmental parameters is shown in table 1,
table 1 on-site composite insulator heating cause judging table
And judging the heating reason of the tested composite insulator according to the table.
Sheath breakage judgment unit: and checking the visible light image of the composite insulator core rod sheath to judge whether the sheath is damaged.
Ultraviolet test video analysis unit: and analyzing the ultraviolet test video of the composite insulator to obtain the ratio of the length of the ultraviolet discharge covered area of the surface of the composite insulator to the whole length of the composite insulator.
A treatment method acquisition unit: and comprehensively utilizing the damage state of the sheath and the ultraviolet test video to provide a composite insulator treatment method.
In the treatment method acquisition unit, the composite insulator treatment method is as follows: when the heating reason of the insulator is surface dirt, the sheath is complete, and the surface ultraviolet discharge length is shorter than 1/3 of the structure height of the composite insulator, the insulator performs tracking retest according to a period of one month; when the heating source is dirt accumulation and heat is generated and the sheath is damaged, the composite insulator should be replaced; when the heating source is dirt accumulation and heating and the ultraviolet discharge length of the surface of the composite insulator exceeds 1/3 of the structural height of the composite insulator, the insulator should be stopped in emergency. When the heating reason of the insulator is the internal defect of the core rod, the composite insulator should be replaced. When the heating reason of the insulator is that the sheath is wet, the composite insulator performs tracking retest according to a period of one month.
The previous description of the embodiments is provided to facilitate a person of ordinary skill in the art in order to make and use the present invention. It will be apparent to those having ordinary skill in the art that various modifications to the above-described embodiments may be readily made and the generic principles described herein may be applied to other embodiments without the use of inventive faculty. Therefore, the present invention is not limited to the above-described embodiments, and those skilled in the art, based on the present disclosure, should make improvements and modifications within the scope of the present invention.
Claims (10)
1. The method for judging and disposing the heating reason of the composite insulator is characterized by comprising the following steps:
a) Carrying out infrared test and ultraviolet test on the tested composite insulator under the environment that the relative humidity exceeds 85% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and an ultraviolet test video;
b) Carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and a visible light image of a composite insulator core rod sheath;
c) Combining the infrared temperature measurement images obtained in the steps a) and b), and comparing, analyzing and judging the heating reason of the composite insulator;
d) Checking the visible light image of the composite insulator core rod sheath, and judging whether the sheath is damaged or not;
e) Analyzing the ultraviolet test video of the composite insulator to obtain the ratio of the length of the ultraviolet discharge covered area of the surface of the composite insulator to the whole length of the composite insulator;
f) And comprehensively utilizing the damage state of the sheath and the ultraviolet test video to provide a composite insulator treatment method.
2. The method for judging and disposing a heat generation cause of a composite insulator according to claim 1, wherein in the step b), the visible light image of the composite insulator core rod sheath is not affected by shielding of the umbrella skirt.
3. The method for determining and disposing a heat generation cause of a composite insulator according to claim 1, wherein in step c), the relationship between the heat generation cause of the composite insulator and the heat generation position and temperature difference under different environmental parameters is shown in Table 1,
table 1 on-site composite insulator heating cause judging table
And judging the heating reason of the tested composite insulator according to the table.
4. The method for determining and disposing a cause of heat generation of a composite insulator according to claim 3, wherein in step f), the composite insulator disposing method is as follows: when the heating reason of the insulator is surface dirt, the sheath is complete, and the surface ultraviolet discharge length is shorter than 1/3 of the structure height of the composite insulator, the insulator performs tracking retest according to a period of one month; when the heating source is dirt accumulation and heat is generated and the sheath is damaged, the composite insulator should be replaced; when the heating source is dirt accumulation and heating and the ultraviolet discharge length of the surface of the composite insulator exceeds 1/3 of the structural height of the composite insulator, the insulator should be stopped in emergency.
5. The method for determining and disposing a heat generation cause of a composite insulator according to claim 3, wherein in the step f), when the heat generation cause of the insulator is a core rod internal defect, the composite insulator is replaced.
6. The method for determining and disposing a heat generation cause of a composite insulator according to claim 3, wherein in the step f), when the heat generation cause of the insulator is that the sheath is wet, the composite insulator is tracked and retested according to a period of one month.
7. A composite insulator heating cause judging and disposing system is characterized by comprising:
the infrared temperature measurement image and ultraviolet test video acquisition unit comprises an infrared temperature measurement image and ultraviolet test video acquisition unit: carrying out infrared test and ultraviolet test on the tested composite insulator under the environment that the relative humidity exceeds 85% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and an ultraviolet test video;
the infrared temperature measurement image and visible light image acquisition unit of the mandrel sheath comprises an infrared temperature measurement image acquisition unit: carrying out infrared test and visible light test on the tested composite insulator under the environment that the relative humidity is lower than 70% and the wind speed is not more than 1.5m/s, and obtaining an infrared temperature measurement image and a visible light image of a composite insulator core rod sheath;
a heating cause judgment unit: combining the infrared temperature measurement image and the infrared test video acquisition unit, and the infrared temperature measurement image acquired by the mandrel sheath visible light image acquisition unit, and comparing, analyzing and judging the heating reason of the composite insulator;
sheath breakage judgment unit: checking the visible light image of the composite insulator core rod sheath, and judging whether the sheath is damaged or not;
ultraviolet test video analysis unit: analyzing the ultraviolet test video of the composite insulator to obtain the ratio of the length of the ultraviolet discharge covered area of the surface of the composite insulator to the whole length of the composite insulator;
a treatment method acquisition unit: and comprehensively utilizing the damage state of the sheath and the ultraviolet test video to provide a composite insulator treatment method.
8. The system for determining and disposing a heat generation cause of a composite insulator according to claim 7, wherein the relationship between the heat generation cause of the composite insulator and the heat generation position and temperature difference under different environmental parameters in the heat generation cause determining unit is shown in Table 1,
table 1 on-site composite insulator heating cause judging table
And judging the heating reason of the tested composite insulator according to the table.
9. The system for judging and disposing the heating cause of the composite insulator according to claim 8, wherein in the disposing method obtaining unit, when the heating cause of the insulator is surface dirt, and the sheath is intact, the surface ultraviolet discharge length is shorter than 1/3 of the structure height of the composite insulator, the insulator is tracked and retested according to a period of one month; when the heating source is dirt accumulation and heat is generated and the sheath is damaged, the composite insulator should be replaced; when the heating source is dirt accumulation and heating and the ultraviolet discharge length of the surface of the composite insulator exceeds 1/3 of the structural height of the composite insulator, the insulator should be stopped in emergency.
10. The system according to claim 8, wherein the means for obtaining the method is configured to replace the composite insulator when the cause of heat generation of the composite insulator is a defect inside the core rod; when the heating reason of the insulator is that the sheath is wet, the composite insulator performs tracking retest according to a period of one month.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310867733.4A CN117007920A (en) | 2023-07-13 | 2023-07-13 | Method and system for judging and disposing heating reason of composite insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310867733.4A CN117007920A (en) | 2023-07-13 | 2023-07-13 | Method and system for judging and disposing heating reason of composite insulator |
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| Publication Number | Publication Date |
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| CN117007920A true CN117007920A (en) | 2023-11-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310867733.4A Pending CN117007920A (en) | 2023-07-13 | 2023-07-13 | Method and system for judging and disposing heating reason of composite insulator |
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| CN (1) | CN117007920A (en) |
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- 2023-07-13 CN CN202310867733.4A patent/CN117007920A/en active Pending
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