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Review of new nondestructive testing methods based on acoustic, optical, and thermal characteristics for insulators
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Yang LI1, Ling LI1, Xiaolin ZHANG1, Yanrui WANG1, Xinglong XU1, Jianmin ZHANG2, Zhe WANG2, Jian WANG2
Insulating Materials | 2023, 56(10) : 12 - 21
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Insulating Materials | 2023, 56(10): 12-21
• Review •
Review of new nondestructive testing methods based on acoustic, optical, and thermal characteristics for insulators
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Yang LI1, Ling LI1, Xiaolin ZHANG1, Yanrui WANG1, Xinglong XU1, Jianmin ZHANG2, Zhe WANG2, Jian WANG2
Affiliations
  • 1Lijiang Power Supply Bureau of Yunnan Electric Power Grid Co., Ltd., Lijiang 674100, China
  • 2North China Electric Power University, Beijing 102206, China
Published: 2023-10-20 doi: 10.16790/j.cnki.1009-9239.im.2023.10.002
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Defects will occur during production and operation of insulator, which will cause the accumulation of surface charge, and affect the distribution of electric field of insulators. In serious cases, surface flashover will occur, and then affect the operation safety of electrical equipment. Therefore, it is of great significance to study the nondestructive testing and evaluation methods of defects in insulators. Firstly, this paper summarized the influence of insulator defect types such as bubble, crack, and metallic foreign matter on insulator insulation performance, and analyzed the generation and development mechanism of different defects. Then, the testing principle and research status of new nondestructive testing methods based on acoustic, optical, and thermal characteristics were summarized and introduced. Finally, the detection methods were comprehensively evaluated from the perspectives of speed and accuracy, the detection effects of different detection methods on insulator defects were evaluated, and the research direction of insulator defect detection in the future were prospected.

insulator  /  defect generation mechanism  /  nondestructive testing method  /  acoustic-optical-thermal characteristics
Yang LI, Ling LI, Xiaolin ZHANG, Yanrui WANG, Xinglong XU, Jianmin ZHANG, Zhe WANG, Jian WANG. Review of new nondestructive testing methods based on acoustic, optical, and thermal characteristics for insulators[J]. Insulating Materials, 2023 , 56 (10) : 12 -21 . DOI: 10.16790/j.cnki.1009-9239.im.2023.10.002
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.10.002
  • Receive Date：2022-11-22
  • Online Date：2025-11-24
  • Published：2023-10-20
Article Data
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History
  • Received：2022-11-22
  • Revised：2022-12-11
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    1Lijiang Power Supply Bureau of Yunnan Electric Power Grid Co., Ltd., Lijiang 674100, China
    2North China Electric Power University, Beijing 102206, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2023.10.002
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表12种不同金属材料的力学参数
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Number of
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小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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