摘要
真空中绝缘介质的沿面闪络一直是制约真空中电绝缘强度的重要因素。文中采用等温衰减电流法(IDC)研究了在不同烧结温度和掺有不同添加剂情况下氧化铝陶瓷试样的陷阱分布,利用试验装置测量了陶瓷试样的沿面闪络特性。试验结果表明,烧结温度和添加剂显著影响了氧化铝陶瓷的陷阱分布:不同的陷阱分布影响着绝缘介质的沿面闪络特性。根据试验结果,笔者从固体能带理论出发,将陷阱分布和氧化铝陶瓷的沿面闪络特性联系在一起,解释了一些沿面闪络发展过程中的疑难问题。
The overall performance of vacuum insulation is usually limited by the surface flashover phenomena. This paper has investigated the trap distribution of Alumina ceramics samples using IDC (Isothermal Decay Current) method, which was prepared under different sintering temperature and with different additives. The experimental results show that sintering temperature and additives influence trap distribution on Alumina ceramics remarkably. The trap distribution on the ceramics dielectric plays an important role of the surface flashover performance. The trap distribution is related with the surface flashover performance based on the energy band theory in this paper, and it seems successfully to explain the development process of surface flashover phenomena.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第2期77-81,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50107002)
国家教育部高等学校骨干教师资助项目
