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Simulation and measurement of deteriorated porcelain insulator discrimination for AC 220 kV transmission lines under multiple layout methods
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Rong LIU1, Jianqiang DAI2, Shan LI2, Long ZHAO2, Jian LIN2, Yang LIU2, Hao WANG3, Xuezhong LIU3
Insulating Materials | 2024, 57(7) : 127 - 134
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Insulating Materials | 2024, 57(7): 127-134
• Test and Analysis •
Simulation and measurement of deteriorated porcelain insulator discrimination for AC 220 kV transmission lines under multiple layout methods
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Rong LIU1, Jianqiang DAI2, Shan LI2, Long ZHAO2, Jian LIN2, Yang LIU2, Hao WANG3, Xuezhong LIU3
Affiliations
  • 1State Grid Shandong Electric Power Company Electric Power Research Institute, Jinan 250002, China
  • 2State Grid Shandong Electric Power Company Linyi Power Supply Company, Linyi 276000, China
  • 3State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an 710049, China
Published: 2024-07-20 doi: 10.16790/j.cnki.1009-9239.im.2024.07.016
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In order to improve the accuracy of live detection of line porcelain insulator degradation, the influences of layout methods and deterioration degree on the voltage distribution characteristics of high-voltage AC insulator strings were studied in this paper. Firstly, a finite element simulation calculation model with single voltage distribution of AC 220 kV porcelain insulator strings under different layout methods was established, and the voltage distribution characteristics of the insulator strings were simulated and analyzed. Then, combined with the actual measured voltage distribution of 220 kV AC transmission line insulator string in Shandong province, the consistency between simulation calculation and actual measurement was verified. The results show that the tower type of transmission circuit, the number and layout method of the insulator string, and the position and deterioration degree of the degraded insulator have great effects on the voltage distribution characteristics and deterioration discrimination of the insulator strings. Among them, the maximum distributed voltage difference of different tower types can reach 35%, and the maximum distributed voltage difference of different layout methods can reach 18%. The deterioration situation of insulators at different positions can be judged by the distribution voltage drop ratio.

line porcelain insulator  /  layout method  /  deterioration discrimination  /  voltage distribution
Rong LIU, Jianqiang DAI, Shan LI, Long ZHAO, Jian LIN, Yang LIU, Hao WANG, Xuezhong LIU. Simulation and measurement of deteriorated porcelain insulator discrimination for AC 220 kV transmission lines under multiple layout methods[J]. Insulating Materials, 2024 , 57 (7) : 127 -134 . DOI: 10.16790/j.cnki.1009-9239.im.2024.07.016
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2024.07.016
  • Receive Date：2023-07-26
  • Online Date：2025-12-24
  • Published：2024-07-20
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History
  • Received：2023-07-26
  • Revised：2023-09-22
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Affiliations
    1State Grid Shandong Electric Power Company Electric Power Research Institute, Jinan 250002, China
    2State Grid Shandong Electric Power Company Linyi Power Supply Company, Linyi 276000, China
    3State Key Laboratory of Electrical Insulation and Power Equipment, Xi′an Jiaotong University, Xi′an 710049, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.07.016
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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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