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Analysis on heating factors and operating performance of composite insulator sheath
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Haoliang YE1, Te LI1, Xiaoyu ZHOU2, Qin HU3, Qiwen WU4, Ying CHEN5, Jing XU6, Fanghui YIN7
Insulating Materials | 2025, 58(5) : 132 - 144
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Insulating Materials | 2025, 58(5): 132-144
• Test and Analysis •
Analysis on heating factors and operating performance of composite insulator sheath
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Haoliang YE1, Te LI1, Xiaoyu ZHOU2, Qin HU3, Qiwen WU4, Ying CHEN5, Jing XU6, Fanghui YIN7
Affiliations
  • 1. Electric Power Research Institute, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310014, China
  • 2. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310004, China
  • 3. College of Electrical Engineering, Chongqing University, Chongqing 400044, China
  • 4. Guangzhou Keii Optoelectronic Technology Co., Ltd., Guangzhou 510663, China
  • 5. Zhejiang Heika Electric Co., Ltd., Hangzhou 330009, China
  • 6. Huzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Huzhou 313002, China
  • 7. Tsinghua Shenzhen International Graduate School, Shenzhen 518055, China
Published: 2025-05-20 doi: 10.16790/j.cnki.1009-9239.im.2025.05.017
Outline
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Composite insulators with a large heating area in a 220 kV operation and maintenance AC line were taken as a sample, the impact of different environmental parameters on the heating and operating performance of the composite insulator was analyzed by conducting power frequency withstand voltage and infrared tests on the heating insulator, as well as physical and chemical property tests on the silicone rubber of the composite insulator. The results show that the abnormal heating of the aged and damp composite insulator sheath is located at the high voltage end. The higher the environmental humidity and the lower the wind speed, the larger the heating range and amplitude. After being dampened, the dielectric constant and dielectric loss of silicone rubber increase significantly, and the heat generation comes from the dielectric loss of the aged sheath on the surface. There are obvious signs of deterioration on the surface silicone rubber of the sheath at the heating point, and the interior of the sheath and the core rod are not affected by the surface heating. The operational performance of the insulator is not affected. In addition, based on the above results, suggestions for on-site maintenance of sheath ageing, moisture, and heat defects were proposed.

composite insulator  /  abnormal temperature rise  /  sheath  /  operating performance
Haoliang YE, Te LI, Xiaoyu ZHOU, Qin HU, Qiwen WU, Ying CHEN, Jing XU, Fanghui YIN. Analysis on heating factors and operating performance of composite insulator sheath[J]. Insulating Materials, 2025 , 58 (5) : 132 -144 . DOI: 10.16790/j.cnki.1009-9239.im.2025.05.017
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2025.05.017
  • Receive Date：2024-04-24
  • Online Date：2025-12-04
  • Published：2025-05-20
Article Data
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History
  • Received：2024-04-24
  • Revised：2024-07-05
Affiliations
    1. Electric Power Research Institute, State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310014, China
    2. State Grid Zhejiang Electric Power Co., Ltd., Hangzhou 310004, China
    3. College of Electrical Engineering, Chongqing University, Chongqing 400044, China
    4. Guangzhou Keii Optoelectronic Technology Co., Ltd., Guangzhou 510663, China
    5. Zhejiang Heika Electric Co., Ltd., Hangzhou 330009, China
    6. Huzhou Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Huzhou 313002, China
    7. Tsinghua Shenzhen International Graduate School, Shenzhen 518055, China
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
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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