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Propagation and partial discharge characteristics of electrical tree in XLPE cable insulation under low-frequency AC voltage
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Yunpeng LIU1, 2, Ziao YIN1, Hechen LIU1, 2, Haofan LIN3, Li LIU3, Jiaying ZHAO1
Insulating Materials | 2024, 57(4) : 66 - 71
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Insulating Materials | 2024, 57(4): 66-71
• Insulation Technology •
Propagation and partial discharge characteristics of electrical tree in XLPE cable insulation under low-frequency AC voltage
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Yunpeng LIU1, 2, Ziao YIN1, Hechen LIU1, 2, Haofan LIN3, Li LIU3, Jiaying ZHAO1
Affiliations
  • 1Hebei Key Laboratory of Green and Efficient New Electrical Materials and Equipment, North China Electric Power University, Baoding 071003, China
  • 2State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
  • 3State Gird Zhejiang Electric Power Research Institute, Hangzhou 310017, China
Published: 2024-04-20 doi: 10.16790/j.cnki.1009-9239.im.2024.04.010
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Low-frequency cable is a key equipment in the flexible low-frequency AC transmission system, and the characteristics of insulation medium under low-frequency voltage are of great significance to the design and operation of cable. In order to study the growth and partial discharge characteristics of electrical tree in cross-linked polyethylene under low-frequency voltage, a real-time observation system for electrical tree growth at different frequencies and a synchronous measurement system for partial discharge were designed and constructed. The initiation, growth, and partial discharge characteristics of electrical tree in XLPE samples were investigated at four frequencies of 20, 30, 40, and 50 Hz. The results show that the influence of voltage frequency on the growth and partial discharge characteristics of electrical tree in XLPE has obvious rules. In the range of 20-50 Hz, with the decrease of voltage frequency, the tree starting voltage of XLPE increases slightly, but the growth rate of electrical tree is accelerated, the damage area increases, the amount and number of partial discharge increase, and the partial discharge phase is basically unchanged.

cross-linked polyethylene  /  electrical tree  /  partial discharge  /  flexible low-frequency AC transmission
Yunpeng LIU, Ziao YIN, Hechen LIU, Haofan LIN, Li LIU, Jiaying ZHAO. Propagation and partial discharge characteristics of electrical tree in XLPE cable insulation under low-frequency AC voltage[J]. Insulating Materials, 2024 , 57 (4) : 66 -71 . DOI: 10.16790/j.cnki.1009-9239.im.2024.04.010
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2024.04.010
  • Receive Date：2023-04-20
  • Online Date：2025-12-22
  • Published：2024-04-20
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History
  • Received：2023-04-20
  • Revised：2023-07-07
Funding
Affiliations
    1Hebei Key Laboratory of Green and Efficient New Electrical Materials and Equipment, North China Electric Power University, Baoding 071003, China
    2State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China
    3State Gird Zhejiang Electric Power Research Institute, Hangzhou 310017, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2024.04.010
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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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