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Accelerated Electrical Ageing Characteristics of 10 kV XLPE Cable
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Zhifei SHEN1, Baokun LIU1, Guodong WANG2, Shiyu LI2, Juan WANG1, Jing HUANG1, Hengwei ZHANG1, Kai ZHOU2
Insulating Materials | 2021, 54(8) : 60 - 66
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Insulating Materials | 2021, 54(8): 60-66
• Insulation Technology •
Accelerated Electrical Ageing Characteristics of 10 kV XLPE Cable
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Zhifei SHEN1, Baokun LIU1, Guodong WANG2, Shiyu LI2, Juan WANG1, Jing HUANG1, Hengwei ZHANG1, Kai ZHOU2
Affiliations
  • 1Sunway Co., Ltd., Leshan 614012, China
  • 2College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Published: 2021-08-20 doi: 10.16790/j.cnki.1009-9239.im.2021.08.010
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XLPE cable insulation is prone to age under the long-term influence of electrical stress. In order to study the electrical ageing characteristics of XLPE cable, we conducted accelerated electrical ageing experiments on 10 kV XLPE cable, and the physic-chemical properties and electrical properties of the XLPE cable before and after ageing were investigated. The results show that the crystallinity of XLPE decreases significantly after electrical ageing, and the melting peak characteristic temperature of XLPE decreases slightly. The methylene content of XLPE increases, and carbon-carbon double bonds start to appear inside the material. PDC test results show that the polarization and depolarization current of the samples increase after electrical ageing, and the conductivity and low frequency dielectric loss of XLPE increase significantly. This is because the chemical bond break in XLPE molecular chain is broke by high-energy electron bombardment, resulting in the increase of short-chain molecules number and degradation of crystalline region, which ultimately decrease the physic-chemical and electrical properties of XLPE insulation material.

XLPE cable  /  accelerate electrical ageing  /  physical and chemical properties  /  dielectric properties
Zhifei SHEN, Baokun LIU, Guodong WANG, Shiyu LI, Juan WANG, Jing HUANG, Hengwei ZHANG, Kai ZHOU. Accelerated Electrical Ageing Characteristics of 10 kV XLPE Cable[J]. Insulating Materials, 2021 , 54 (8) : 60 -66 . DOI: 10.16790/j.cnki.1009-9239.im.2021.08.010
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.08.010
  • Receive Date：2020-09-18
  • Online Date：2026-03-20
  • Published：2021-08-20
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History
  • Received：2020-09-18
  • Revised：2020-11-11
Affiliations
    1Sunway Co., Ltd., Leshan 614012, China
    2College of Electrical Engineering, Sichuan University, Chengdu 610065, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.08.010
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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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