机电工程技术2026，Vol.55Issue(3)：118-123,6.DOI:10.3969/j.issn.1009-9492.2026.03.019
10 kV电缆绝缘层局部放电特性及其剥切装置
Partial Discharge Characteristics and Stripping Device for 10 kV Cable Insulation
边少聪 1杨昌建 1辛蕾 1徐丹 2任双赞 1刘晶 1侯喆1
作者信息
- 1. 陕西中试电力科技有限公司,西安 710100||国网陕西省电力有限公司电力科学研究院,西安 710100
- 2. 国网陕西省电力有限公司电力科学研究院,西安 710100
- 折叠
摘要
Abstract
To address the issue of scratch defects on 10kV cable insulation layers during traditional manual stripping,which compromise joint insulation performance and operational reliability,this study designed a novel cable stripping device.The device employs coordinated multi-group clamping pulley brackets,adjustable tool holders,and multi-dimensional guiding cutters to achieve stable clamping and precise stripping for cables of varying specifications,effectively preventing damage to the main insulation layer.COMSOL simulations and experimental analyses confirmed that scratch defects cause significant electric field distortion:simulation results showed that with a scratch depth of 2 mm,the peak electric field intensity in the defect region reached 1.15 kV/mm,representing a 62.0%distortion rate compared to the defect-free region(0.70 kV/mm).Experimental results indicated that as the scratch depth increased from 1 mm to 3 mm,the partial discharge inception voltage(PDIV)decreased from 19.8 kV to 14.3 kV(a 35.59%reduction),while the discharge magnitude increased from 12.4 pC to 58.8 pC,significantly elevating the risk of partial discharge.Compared to manual stripping,the stripping device improved insulation layer stripping efficiency by 40%and semi-conductive layer stripping efficiency by 47.67%.Microscopic observations revealed scratches on the main insulation surface after manual stripping,whereas the surface remained smooth after using the stripping device.The study provides quantitative evidence and technical support for optimizing cable joint fabrication processes,offering significant implications for enhancing cable operational reliability.关键词
电缆剥切/绝缘层质量/剥切装置/局部放电/表面划痕/绝缘性能Key words
cable stripping/insulation layer quality/stripping device/partial discharge/surface scratch/insulation performance分类
信息技术与安全科学引用本文复制引用
边少聪,杨昌建,辛蕾,徐丹,任双赞,刘晶,侯喆..10 kV电缆绝缘层局部放电特性及其剥切装置[J].机电工程技术,2026,55(3):118-123,6.
