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Influence of Insulation Ageing on Electric Field Distribution at Interface Defects of Cable Joints
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Jianjun ZHAO1, Qingzhong XU1, Wencheng WANG1, Ping’an LI1, Xiufeng LI1, Xiaoqiang WANG2
Insulating Materials | 2021, 54(7) : 67 - 74
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Insulating Materials | 2021, 54(7): 67-74
• Insulation Technology •
Influence of Insulation Ageing on Electric Field Distribution at Interface Defects of Cable Joints
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Jianjun ZHAO1, Qingzhong XU1, Wencheng WANG1, Ping’an LI1, Xiufeng LI1, Xiaoqiang WANG2
Affiliations
  • 1College of Electric and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
  • 2Far East Cable Co., Ltd., Yixing 214257, China
Published: 2021-07-20 doi: 10.16790/j.cnki.1009-9239.im.2021.07.010
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In order to study the influence of insulation ageing of cable joint on the electric field distribution at the typical defects of XLPE/silicone rubber interface, we built a simulation model of 10 kV cable joint by COMSOL Multiphysics simulation software. The electric field distribution in the composite interface with defect of conductive impurities, scratches, moisture, respectively was calculated before and after ageing of insulation. And the growth change of water tree in the cable insulation was analyzed combining with the simulation results. The results show that three kinds of defects can lead to obvious electric field distortion at the defect of composite interface, and the ageing of insulation can increase the electric field strength at the interface, and increase the effect of defects on the electric field distribution at the same time. The electric field distortion at the end of water tree is serious after initiation, with the growth and development of water branches, the electric field strength in the area close to each other decreases, but the local electric field concentration still exists.

cable joint  /  insulation ageing  /  interface defects  /  water tree  /  electric field distribution
Jianjun ZHAO, Qingzhong XU, Wencheng WANG, Ping’an LI, Xiufeng LI, Xiaoqiang WANG. Influence of Insulation Ageing on Electric Field Distribution at Interface Defects of Cable Joints[J]. Insulating Materials, 2021 , 54 (7) : 67 -74 . DOI: 10.16790/j.cnki.1009-9239.im.2021.07.010
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Year 2021 volume 54 Issue 7
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.07.010
  • Receive Date：2020-09-02
  • Online Date：2026-03-20
  • Published：2021-07-20
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History
  • Received：2020-09-02
  • Revised：2020-10-27
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Affiliations
    1College of Electric and Electronic Engineering, Shandong University of Technology, Zibo 255000, China
    2Far East Cable Co., Ltd., Yixing 214257, 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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