高电压技术2011，Vol.37Issue(8)：1895-1903,9.
NOMEX合成纤维绝缘介质在直流电场中的空间电荷特性
Space Charge Characteristics of NOMEX Synthetic Fiber Under DC filed
摘要
Abstract
In order to enhance the service life of transformers and its insulation level, synthetic fiber insulation paper has been widely used in the dielectric insulation engineering because of its excellent dielectric, mechanical and ther- mal stability, moisture resistance and other properties. Injection, accumulation and dissipation characteristics of space charge were studied by pulsed electro-acoustic （PEA） method in samples of NOMEX synthetic fiber paper un- der DC field, and were compared with those of the traditional plant cellulose insulation paper with dielectric proper- ties. The results reveal that NOMEX paper has a lower space charge accumulation threshold field and it is easy to inject and accumulate space charge, and it is hard to dissipate after short circuit under DC field. The space charge characteristics of NOMEX synthetic fiber paper are closely associated with its surface topography, morphology and dielectric properties. In a sense, these characteristics contribute to restrain the transportation of space charge in the dielectric.关键词
变压器/绝缘/合成纤维/空间电荷/NOMEX纸/电声脉冲（PEA）法/介电特性Key words
Key words/transformer/insulation/synthetic fiber/space charge/NOMEX paper/pulsed electro-acoustic { PEA）method/dielectric properties分类
信息技术与安全科学引用本文复制引用
廖瑞金,李伟,杨丽君,郝建,周欣,李剑..NOMEX合成纤维绝缘介质在直流电场中的空间电荷特性[J].高电压技术,2011,37(8):1895-1903,9.基金项目
中央高校基本科研业务费资助项目 （）
国家创新研究群体基金 （）
教育部科技创新工程重大项目培育资金项目（707049）. （）
