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Mechanism and Experimental Study on Discharge Ablation of High Voltage XLPE Cable Buffer Layer
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Yang LIU1, Jie CHEN1, Libin HU1, Qingbo LAI2, Shunman LIU2, Jingying CAO1, Wei ZHANG1
Insulating Materials | 2021, 54(8) : 102 - 108
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Insulating Materials | 2021, 54(8): 102-108
• Test and Analysis •
Mechanism and Experimental Study on Discharge Ablation of High Voltage XLPE Cable Buffer Layer
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Yang LIU1, Jie CHEN1, Libin HU1, Qingbo LAI2, Shunman LIU2, Jingying CAO1, Wei ZHANG1
Affiliations
  • 1Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211100, China
  • 2School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
Published: 2021-08-20 doi: 10.16790/j.cnki.1009-9239.im.2021.08.016
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In order to study the ablation mechanism of buffer layer in cable, we analyzed the change of contact state between buffer layer and aluminum sheath according to the defect phenomenon, and then a circuit model was established to analyze the defect. According to the model, the induced voltage of insulation shielding layer and the main factors affecting the induced voltage were analyzed. A 15 m defective cable sample was intercepted from the breakdown accident line, and a partial discharge detection experimental platform was built with the defective cable sample. The results show that the induced voltage of insulation shielding layer is directly proportional to the number of defects, the resistivity of composite layer, and the thickness of white powder at the defect, and is inversely proportional to the contact area between buffer layer and aluminum sheath, and the discharge signals inside the defect cable have obvious characteristics of poor contact discharge.

XLPE cable  /  buffer layer  /  ablative discharge defects  /  induced voltage  /  partial discharge
Yang LIU, Jie CHEN, Libin HU, Qingbo LAI, Shunman LIU, Jingying CAO, Wei ZHANG. Mechanism and Experimental Study on Discharge Ablation of High Voltage XLPE Cable Buffer Layer[J]. Insulating Materials, 2021 , 54 (8) : 102 -108 . DOI: 10.16790/j.cnki.1009-9239.im.2021.08.016
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Year 2021 volume 54 Issue 8
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.08.016
  • Receive Date：2020-10-12
  • Online Date：2026-03-20
  • Published：2021-08-20
Article Data
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History
  • Received：2020-10-12
  • Revised：2020-11-30
Funding
Affiliations
    1Electric Power Research Institute of State Grid Jiangsu Electric Power Co., Ltd., Nanjing 211100, China
    2School of Electric Power Engineering, South China University of Technology, Guangzhou 510641, China
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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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