基于水树老化的电力电缆绝缘评估图谱特征分析  

Characterisation of Power Cable Insulation Assessment Capping Based on Water Tree Ageing

作　　者：伏伟 Fu Wei(Gansu Changkai Installation Engineering Co.,Ltd.,Lanzhou Gansu 730030,China)

机构地区：[1]甘肃长开安装工程有限公司,甘肃兰州730030

出　　处：《现代工业经济和信息化》2024年第3期128-131,166,共5页Modern Industrial Economy and Informationization

摘　　要：以电力电缆绝缘老化评估为研究目的,采用水树老化实验方法进行电缆试验.在使用红外成像技术获取电缆表面温度信息的基础上,提取了电缆表面温度分布特征以及水树放电特征,并通过对比分析不同老化程度下水树老化特征变化,建立了电力电缆绝缘评估图谱.结果表明,电缆表面温度分布呈现不均匀性,在老化程度加剧时,水树放电特征不断增强.在此基础上,提出了一种基于水树老化的电力电缆绝缘评估方法,并得出结论:该方法能够有效地评估电力电缆绝缘老化程度,为电力系统的运行和维护提供了参考依据.The study takes the power cable insulation aging assessment as the research purpose,and adopts the water tree aging experimental method to carry out the cable test.In the use of infrared imaging technology to obtain the cable surface temperature information,based on the extraction of the cable surface temperature distribution characteristics and water tree discharge characteristics,and through a comparative analysis of the water tree aging characteristics of different degrees of aging under the changes in the establishment of the power cable insulation assessment mapping.The results show that the cable surface temperature distribution shows inhomogeneity,and the water tree discharge characteristics are continuously enhanced when the aging degree is intensified.On this basis,a power cable insulation assessment method based on water tree aging is proposed,and it is concluded that the method can effectively assess the degree of power cable insulation aging,providing a reference basis for the operation and maintenance of the power system.

关 键 词：水树 电力电缆 交联聚乙烯 

分 类 号：TM75[电气工程—电力系统及自动化]