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Effect of Hydrolysable Antioxidants on Long-term Properties of XLPE Cable Rejuvenation
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Yizhou ZHANG1, Hao YUN1, Liang WANG1, Yufei SUN1, Chun GUI1, Lei WANG1, Yilin CHEN2, Kai ZHOU2
Insulating Materials | 2022, 55(4) : 77 - 82
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Insulating Materials | 2022, 55(4): 77-82
• Insulation Technology •
Effect of Hydrolysable Antioxidants on Long-term Properties of XLPE Cable Rejuvenation
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Yizhou ZHANG1, Hao YUN1, Liang WANG1, Yufei SUN1, Chun GUI1, Lei WANG1, Yilin CHEN2, Kai ZHOU2
Affiliations
  • 1China Nuclear Power Operation Technology Corporation Ltd., Wuhan 430223, China
  • 2College of Electrical Engineering, Sichuan University, Chengdu 610065, China
Published: 2022-04-20 doi: 10.16790/j.cnki.1009-9239.im.2022.04.011
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In order to investigate the effect of hydrolysable antioxidants on long-term properties of XLPE cable rejuvenation, we selected two kinds of rejuvenation fluid containing different antioxidants to inject water tree ageing cable, and conducted secondary thermal ageing, then tested and analyzed the electrical performance changes of cable samples before and after rejuvenate and thermal ageing. The results show that the two rejuvenation fluid can significantly reduce the dielectric loss factor, leakage current, and conductivity of water tree ageing cable, and increase the breakdown voltage, the rejuvenate samples with hydrolysable antioxidant show a higher breakdown voltage. After secondary thermal ageing, the dielectric loss factor, leakage current, and conductivity of the two groups of rejuvenate samples increase again, while the breakdown voltage decreases. However, the parameters of the rejuvenate samples with hydrolyzable antioxidant are generally superior to those with non-hydrolyzable antioxidant. It is proved that oligomers are generated by hydrolyzation-condensation reaction of hydrolysable antioxidant siloxane, which can elongate the molecular chain segment and improve the ability of migration resistance, and can be retained in the cable insulation for a long time to inhibit the thermal oxygen ageing process of polymer molecules.

XLPE cable  /  hydrolysable antioxidants  /  cable rejuvenation  /  water tree ageing  /  long-term properties
Yizhou ZHANG, Hao YUN, Liang WANG, Yufei SUN, Chun GUI, Lei WANG, Yilin CHEN, Kai ZHOU. Effect of Hydrolysable Antioxidants on Long-term Properties of XLPE Cable Rejuvenation[J]. Insulating Materials, 2022 , 55 (4) : 77 -82 . DOI: 10.16790/j.cnki.1009-9239.im.2022.04.011
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doi: 10.16790/j.cnki.1009-9239.im.2022.04.011
  • Receive Date：2021-05-13
  • Online Date：2025-12-22
  • Published：2022-04-20
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  • Received：2021-05-13
  • Revised：2021-06-06
Affiliations
    1China Nuclear Power Operation Technology Corporation Ltd., Wuhan 430223, 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.2022.04.011
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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
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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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