摘要
针对当前电缆端部水分侵入认知不足,以及缺少专业的电缆端部密封设备及技术,导致电缆端部密封质量较差的问题。搭建了电缆材料的吸水及除湿试验平台,研究电缆材料在不同温度及湿度下的吸水特性,结果表明,温度显著影响电缆材料水分吸收的速度,湿度则影响电缆材料水分吸收饱和时的吸水率,其中填充层饱和吸水率最大,达到0.76%;开展了电缆材料的真空除湿试验和仿真研究,掌握了不同温度、真空度下XLPE电缆材料水分除湿特性,结果表明,无论是高真空还是低真空状态,90℃下的除湿效果均能达到60%以上的除湿率。研制了电缆端部智能密封装置并开展了密封效果验证。结果显示,该装置能够显著提升电缆端部的防潮性能,确保在严苛环境下电缆的稳定性与可靠性。
In view of the current lack of awareness of water intrusion at the end of the cable,as well as the lack of professional cable end sealing equipment and technology,the sealing quality of the cable end is poor.Experimental platform of water absorption and dehumidification of cable materials is built,and water absorption characteristics of cable materials at different temperature and humidity are studied.The results show that the synergistic enhancement effect of temperature and humidity on the water absorption of XLPE materials.In the high humidity environment,the water absorption of the filled layer shows a significant increasing trend,and the saturated water absorption reaches 0.76%.The vacuum dehumidification test is carried out,and the moisture dehumidification characteristics of XLPE cable materials under different temperature and vacuum are mastered.The results show that the dehumidification effect at 90℃can reach more than 60%,no matter in high vacuum or low vacuum.Intelligent sealing device for cable end is developed,and the sealing effect is verified.The results verifies that the device can significantly improve the moisture-proof performance of the cable end and ensure the stability and reliability of the cable in the harsh environment.
作者
杨昌建
边少聪
李珂
任双赞
辛蕾
徐丹
杨传凯
Yang Changjian;Bian Shaocong;Li Ke;Ren Shuangzan;Xin Lei;Xu Dan;Yang Chuankai(State Grid Shaanxi Electric Power Company Electric Power Research Institute,Xi’an 710061,China;State Grid Shaanxi Electric Power Company,Xi’an 710054,China)
出处
《机电工程技术》
2025年第23期115-120,共6页
Mechanical & Electrical Engineering Technology
基金
国网陕西省电力有限公司科技项目(5226KY24001L)
国家自然科学基金青年科学基金项目(52107029)。
关键词
XLPE材料
真空除湿
密封装置
防潮性能
XLPE material
vacuum dehumidification
sealing device
moisture-proof performance
