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Study on Mechanism and Influence of Electrical-thermal Ageing on Accumulation Rule of Space Charges at Stress Cone
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Minghao WEI1, Dongxin HE2, Bo GAO1, Bingxia JIANG1, Wei WANG1
Insulating Materials | 2021, 54(10) : 61 - 65
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Insulating Materials | 2021, 54(10): 61-65
• Insulation Technology •
Study on Mechanism and Influence of Electrical-thermal Ageing on Accumulation Rule of Space Charges at Stress Cone
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Minghao WEI1, Dongxin HE2, Bo GAO1, Bingxia JIANG1, Wei WANG1
Affiliations
  • 1Beijing Key Laboratory of High Voltage & Electromagnetic Compatibility, North China Electric Power University, Beijing 102206, China
  • 2Shandong Provincial Key Laboratory of UHV Transmission Technology and Equipment, School of Electrical Engineering, Shandong University, Jinan 250061, China
Published: 2021-10-20 doi: 10.16790/j.cnki.1009-9239.im.2021.10.009
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In order to study the effect of stress cone on the accumulation of space charge, we designed a cable model with stress cone structure. A platform was built to perform the combined electric and thermal ageing on the model cable. The distribution of space charge before and after ageing was measured by pulse electro-acoustic method, and the accumulation of space charge at different axial and radial positions was compared. The results show that more space charge accumulates at the root of the stress cone, and the accumulated space charge mainly distributes on the outside of the insulation layer of the cable. To make a preliminary explanation of this phenomenon, it is believed that the electric field distortion caused by the stress cone makes the space charge easy to accumulate in this area.

space charge  /  stress cone  /  combined electrical-thermal ageing  /  XLPE
Minghao WEI, Dongxin HE, Bo GAO, Bingxia JIANG, Wei WANG. Study on Mechanism and Influence of Electrical-thermal Ageing on Accumulation Rule of Space Charges at Stress Cone[J]. Insulating Materials, 2021 , 54 (10) : 61 -65 . DOI: 10.16790/j.cnki.1009-9239.im.2021.10.009
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Article Info
doi: 10.16790/j.cnki.1009-9239.im.2021.10.009
  • Receive Date：2020-12-30
  • Online Date：2026-03-23
  • Published：2021-10-20
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History
  • Received：2020-12-30
  • Revised：2021-03-05
Funding
Affiliations
    1Beijing Key Laboratory of High Voltage & Electromagnetic Compatibility, North China Electric Power University, Beijing 102206, China
    2Shandong Provincial Key Laboratory of UHV Transmission Technology and Equipment, School of Electrical Engineering, Shandong University, Jinan 250061, China
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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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