高压电器2026，Vol.62Issue(2)：162-167,6.DOI:10.13296/j.1001-1609.hva.2026.02.020
径向电场诱发的高压交联聚乙烯电缆绝缘屏蔽烧蚀规律研究
Study on Ablation of Insulation Shield of High Voltage XLPE Cable Induced by Radial Electric Field
叶宽 1祝秀山 2赵雪骞 1门业堃 1滕景竹 1郭卫 1洪涵韬 3吴明 3高景晖3
作者信息
- 1. 国网北京市电力公司电力科学研究院,北京 100075
- 2. 国网北京市电力公司顺义供电公司,北京 101300
- 3. 西安交通大学电力设备电气绝缘国家重点实验室,西安 710049
- 折叠
摘要
Abstract
Corrugated aluminum sheath is used widely in high-voltage cross-linked polyethylene(XLPE)insulated cable due to its excellent bending performance.However,in recent years,there have been many cable ablation fail-ures from the buffer layer,which will seriously develop to the insulation shield layer and even the insulation layer.In this paper the ablation mechanism of insulation shield due to radial electric field is studied.The ablation mechanism of insulation shield is deduced by simulating the discharge of insulation shield in different gaps.The experimental re-sults show that the buffer layer will develop inward after ablation,resulting in insulation shield ablation.The break-down,in the case of spacing,is the air breakdown between the buffer layer and the insulation shield sample as well as the electrode.While,in the case of no spacing,the breakdown is the insulation shield ablation caused by the elec-trode directly penetrating the buffer layer.The ablation of the buffer layer will greatly affect the electrical perfor-mance of the insulation shield.It is therefore necessary to focus on the ablation faults at the contact point between the aluminum sheath and the buffer layer,which is conducive to preventing cable failure and ensuring safe and stable operation of power grid.关键词
高压XLPE绝缘电缆/绝缘屏蔽烧蚀/径向电场/模拟放电实验Key words
high voltage XLPE insulated cable/insulation shield ablation/radial electric field/simulated discharge experiment引用本文复制引用
叶宽,祝秀山,赵雪骞,门业堃,滕景竹,郭卫,洪涵韬,吴明,高景晖..径向电场诱发的高压交联聚乙烯电缆绝缘屏蔽烧蚀规律研究[J].高压电器,2026,62(2):162-167,6.
