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Effect of Relative Humidity on Partial Discharge Characteristics of Cable Buffer Layer Under Different Electric Field Forms
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Zhijian LI1, Xu LI1, Xiaoyu DU2, Xiaoxiao KONG2, Jin LI2, Boxue DU2
Insulating Materials | 2021, 54(7) : 102 - 109
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Insulating Materials | 2021, 54(7): 102-109
• Test and Analysis •
Effect of Relative Humidity on Partial Discharge Characteristics of Cable Buffer Layer Under Different Electric Field Forms
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Zhijian LI1, Xu LI1, Xiaoyu DU2, Xiaoxiao KONG2, Jin LI2, Boxue DU2
Affiliations
  • 1Tianjin Electric Power Research Institute of State Grid Tianjin Electric Power Company, Tianjin 300384, China
  • 2School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Published: 2021-07-20 doi: 10.16790/j.cnki.1009-9239.im.2021.07.015
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According to the structure of cable buffer layer, a partial discharge test platform with controllable humidity environment for buffer layer was established. Three typical defect models were designed and conducted partial discharge tests by pulse current method. The results show that the variation of relative humidity has little effect on the geometric shape of partial discharge pattern, while has large effect on the characteristic parameters of partial discharge. With the increase of humidity, the discharge amplitude of three models decreases at first and then increases. Under constant humidity and voltage, the partial discharge activity in the needle-plate system is higher than that in the other models. Under 180 V of voltage and 90% of humidity, the maximum pulse amplitude reaches 770 mV.

cable buffer layer  /  partial discharge  /  relative humidity  /  characteristic parameters
Zhijian LI, Xu LI, Xiaoyu DU, Xiaoxiao KONG, Jin LI, Boxue DU. Effect of Relative Humidity on Partial Discharge Characteristics of Cable Buffer Layer Under Different Electric Field Forms[J]. Insulating Materials, 2021 , 54 (7) : 102 -109 . DOI: 10.16790/j.cnki.1009-9239.im.2021.07.015
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.07.015
  • Receive Date：2020-08-19
  • Online Date：2026-03-20
  • Published：2021-07-20
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History
  • Received：2020-08-19
  • Revised：2020-11-06
Funding
Affiliations
    1Tianjin Electric Power Research Institute of State Grid Tianjin Electric Power Company, Tianjin 300384, China
    2School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
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https://castjournals.cast.org.cn/joweb/jycl/EN/10.16790/j.cnki.1009-9239.im.2021.07.015
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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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