交联聚乙烯电缆电树老化的研究进展

Research Progress on Electrical Tree Aging of Crosslinked Polyethylene Cables

综述了交联聚乙烯(XLPE)电缆的电树老化现象及其对电缆绝缘性能的影响。介绍了电树老化的特征,包括极性效应、不可逆性以及可与水树老化相互转换等,简述了电树老化主要的几种理论模型,并对比分析了不同理论模型的优缺点,回顾了电树老化的影响因素,包括机械应力、温度和电压等,阐述了电树老化的诊断技术和修复技术,分析了XLPE电缆电树老化所面临的挑战,指出对电树老化的深入研究是解决电缆老化问题的关键,并提出了未来工作的研究方向。

Electrical tree aging phenomenon of crosslinked polyethylene(XLPE)cable and its impact on the insulation perfor‐mance of XLPE cable were reviewed.The characteristics of electrical treeing,including polarity effect,irreversibility,and conver‐sion with water treeing,were introduced.An overview of the main theoretical models of electrical treeing was provided and their advantages and disadvantages were compared.The influencing factors of electrical treeing,such as mechanical stress,temperature,and voltage,were reviewed.The diagnostic and repair techniques for electrical tree aging were explained.The challenges faced by electrical tree aging in XLPE cables were analyzed.It was emphasized that in-depth research on electrical treeing was the key to resolving cable aging issues.Finally,future research directions in this field were proposed.