Method for evaluating aging state of running composite insulator in tropical environment
A technology for composite insulators and evaluation methods, which is applied in the field of aging state evaluation of composite insulators operating in tropical environments, and can solve problems such as insulation performance degradation, aging, and flashover accidents
Pending Publication Date: 2020-11-20
HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology
With the increase of the running time of the composite insulator hanging on the grid, due to the joint action of many factors such as strong electric field, high temperature, ultraviolet rays, acid rain and pollution, the shed material of the composite insulator is gradually aging, which reduces its insulation performance and even causes flashover accidents
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[0070] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.
[0071] see Figure 1 to Figure 11 , the present invention provides a method for evaluating the aging state of a composite insulator operating in a tropical environment, the evaluation method comprising:
[0072] S1. Perform visual inspection on the running composite insulator.
[0073] S2. Carry out hydrophobicity test, volume resistivity test, dielectric loss test, tensile strength test, leakage current test, and infrared spectrum characteristic absorption peak test on the silicone rubber material of the running composite insulator shed;
[0074] S3. According to the appearance inspection results of the composite insulator shed silicone rubber material in operation, the quantitative results of the hydrophobicity test, volume resistivity test, dielectric los...
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Abstract
The invention relates to a method for evaluating the aging state of a running composite insulator in a tropical environment. The method comprises the following steps: S1, carrying out appearance inspection on a running composite insulator; S2, performing a hydrophobicity test, a volume resistivity test, a dielectric loss test, a tensile strength test, a leakage current test and an infrared spectrum characteristic absorption peak test on the running composite insulator shed silicone rubber material; and S3, performing graded evaluation on the aging state of the running composite insulator according to quantitative results such as an appearance inspection result, a hydrophobicity test, a volume resistivity test, a dielectric loss test, a tensile strength test, a leakage current test and an infrared spectrum characteristic absorption peak test of the shed silicone rubber material of the running composite insulator. The aging state degree of the composite insulator can be accurately and sensitively judged, potential risks can be found in time, and whether the composite insulator can continue to operate or not can be judged.
Description
technical field [0001] The invention relates to a method for evaluating the aging state of a composite insulator, in particular to a method for evaluating the aging state of a composite insulator operating in a tropical environment. Background technique [0002] High-temperature vulcanized silicone rubber composite insulators have been widely used as supporting components in high-voltage transmission lines in my country. With the increase of the running time of the composite insulator hanging on the grid, due to the joint action of many factors such as strong electric field, high temperature, ultraviolet rays, acid rain and pollution, the shed material of the composite insulator is gradually aging, which reduces its insulation performance and even causes flashover accidents. Carrying out research on the aging state evaluation of composite insulators is very important for timely detection of defects and ensuring the safe operation of power systems. Contents of the invention...
Claims
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Login to View More IPC IPC(8): G01N17/00
CPCG01N17/00
Inventor 陈林聪李欣然陈晓琳张瑞恩符小桃符传福
Owner HAINAN POWER GRID CO LTD ELECTRIC POWER RES INST