中国电机工程学报2016，Vol.36Issue(22)：6294-6302,9.DOI:10.13334/j.0258-8013.pcsee.152499
硅橡胶在不同电晕老化阶段下的表面电荷对沿面闪络的影响
Influence of Surface Charge on Surface Flashover of Silicone Rubber at Different Corona Aging Time
摘要
Abstract
To deeply investigate the influence of corona aging on surface flashover and surface charge of silicone rubber, Silicone rubber was aged by multi-needle-plate electrodes at different aging time. By measuring the surface charge of aged silicone rubber at different aging time and from zero voltage to flashover, the change of surface charge and surface flashover of aged silicone rubber were studied. At last, in order to investigate the influence of the trap characteristics on the surface charge of silicone rubber, thermal stimulation current (TSC), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) tests were used to observe the change of micro electrical properties, physical and chemical defects of the samples at different aging time. According to the tests results, with the increase of corona aging time, the trap level of silicone rubber goes deep, trap charge increases and the capacity of silicone to capture charge gets enhanced which causes the raise of surface charge. It can also be known that with the increase of voltage level, the maximum of surface charge gradually approaches the nearest area between two electrodes until partial discharge gets through the two electrodes and results in surface flashover. In conclusion, with the increase of corona aging time, the capacity of silicone rubber to catch charge gets enhanced which causes a stronger partial discharge is the reason for the decrease of flashover voltage.关键词
硅橡胶/沿面闪络/电晕/老化/表面电荷/TSCKey words
silicone rubber/surface flashover/corona/aging/surface charge/TSC分类
信息技术与安全科学引用本文复制引用
梁英,靳哲,张君成..硅橡胶在不同电晕老化阶段下的表面电荷对沿面闪络的影响[J].中国电机工程学报,2016,36(22):6294-6302,9.基金项目
国家自然科学基金项目(51207055)；河北省自然科学基金项目(E2013502213)。Project Supported by National Natural Science Foundation of China (51207055) （51207055）
Project Supported by National Natural Science Foundation of Hebei Province (E2013502213) （E2013502213）
