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Water tree diagnosis of XLPE cable based on combination of macro and micro parameters
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Bo ZHU1, Yaqi ZHU1, Tianyu WANG2, Tao ZHANG1, Weiqiang FU1
Insulating Materials | 2023, 56(7) : 74 - 81
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Insulating Materials | 2023, 56(7): 74-81
• Insulation Technology •
Water tree diagnosis of XLPE cable based on combination of macro and micro parameters
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Bo ZHU1, Yaqi ZHU1, Tianyu WANG2, Tao ZHANG1, Weiqiang FU1
Affiliations
  • 1School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
  • 2State Grid Shandong Binzhou Zhanhua District Power Supply Company, Binzhou 256600, China
Published: 2023-07-20 doi: 10.16790/j.cnki.1009-9239.im.2023.07.012
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In order to solve the prediction problem of water tree density of XLPE cable, an analysis method combining the macro detection data with the micro water tree profile of aged cable was proposed. Two new parameters (carbon and oxygen index and water content index) were proposed to quantitatively describe the changes of EDS and FTIR results in the water tree region. Firstly, the polarization and depolarization current method (PDC) was used to detect the water-tree ageing cables under different experimental conditions. A series of macroscopic parameters such as cable ageing factor, DC conductivity, and 0.1 Hz dielectric loss factor were obtained. Then, the micro parameters of water tree were obtained by microscopic observation of cable slice. The water tree growth model was established to calculate the water tree density of cable, and the correlation between the macroscopic parameters of cable and the microscopic water tree density was analyzed. The results show that the longer the ageing time, the greater the carbon oxygen index and water content index, and the faster the rate of increase. Based on the correlation coefficient, a new mathematical model for predicting the growth density of water tree inside XLPE cable is established, which realize the combination of microstructure of water tree inside cable and macro test parameters.

XLPE cable  /  water tree  /  polarization/depolarization current  /  correlation analysis  /  macroscopic parameters/microstructure
Bo ZHU, Yaqi ZHU, Tianyu WANG, Tao ZHANG, Weiqiang FU. Water tree diagnosis of XLPE cable based on combination of macro and micro parameters[J]. Insulating Materials, 2023 , 56 (7) : 74 -81 . DOI: 10.16790/j.cnki.1009-9239.im.2023.07.012
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2023.07.012
  • Receive Date：2022-08-07
  • Online Date：2025-11-24
  • Published：2023-07-20
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  • Received：2022-08-07
  • Revised：2022-10-17
Affiliations
    1School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China
    2State Grid Shandong Binzhou Zhanhua District Power Supply Company, Binzhou 256600, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2023.07.012
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表12种不同金属材料的力学参数
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Family		 属数
Number of
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Number of
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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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