摘要
针对复合绝缘子伞裙及护套老化问题,提出基于微波透射法的硅橡胶材料老化检测方法。开展了硅橡胶人工加速老化试验,搭建了微波无损检测试验平台进行硅橡胶微波无损检测试验,分析了不同老化程度硅橡胶透射系数S_(21)的变化规律,并通过数值仿真揭示了微波透射法检测硅橡胶老化状态的机理。结果表明:硅橡胶老化后,由于介电特性的改变,透射系数S_(21)的幅值会发生改变,通过ΔS_(21)的大小可表征硅橡胶的老化程度。该研究对复合绝缘子老化状态检测具有重要意义。
Aiming at the aging problem of shed and sheath of composite insulator,an aging detection method of silicone rubber material based on microwave transmission method is proposed.The artificial accelerated aging test of silicone rubber is carried out,and the microwave nondestructive testing platform is built to carry out the microwave nondestructive testing test of aging silicone rubber.The variation law of transmission parameter S21 of silicone rubber with different aging degrees is analyzed,and the aging detection mechanism of silicone rubber by microwave transmission method was revealed by numerical simulation.The test results show that after the aging of silicone rubber,due to the change of its dielectric properties,the amplitudes of S21 will change,and the aging degree of sillicone rubber can be identified by the value ofΔS21.The research is of great significance to the aging detection of composite insulators.
作者
李慧慧
张博明
黎子晋
黎鹏
吴田
LI Huihui;ZHANG Boming;LI Zijin;LI Peng;WU Tian(State Grid Hubei Electric Power Company Limited,Economic and Technical Research Institute,Wuhan 430077,China;Hubei Provincial Engineering Technology Research Center for Power Transmission Line(China Three Gorges University),Yichang 443002,China;College of Electrical Engineering&New Energy,China Three Gorges University,Yichang 443002,China)
出处
《湖南电力》
2023年第2期14-18,共5页
Hunan Electric Power
基金
国家自然科学基金(51807110)。
关键词
复合绝缘子
硅橡胶
老化
微波透射法
透射参数
composite insulators
silicone rubber
aging
microwave transmission method
transmission parameter
