电测与仪表2012，Vol.49Issue(4)：47-50,4.
利用希尔伯特边际谱鉴别变压器励磁涌流
Identification of Transformer Inrush Current Based on Hilbert Spectrum
摘要
Abstract
Inrush current contains a large component of higher harmonic and aperiodic components, while fault current always keeps its basic frequency. Aiming at this frequency feature, a new method to distinguish inrush current and fault current based on Hilbert spectrum is studied. It uses Hilhert spectrum to separate signal frequency, and calculates Hilbert spectrum amplitude of rated frequency by integral. Based on the relationship between integral results and setting value, it can distinguish current signal. PSCAD/EMTDC and MATLAB are used to complete simulation samples. It is proved that this method can distinguish inrush current and fault current reliably.关键词
变压器/故障电流/励磁涌流/希尔伯特边际谱Key words
transformer, fault current, inrush current, Hilbert spectrum分类
信息技术与安全科学引用本文复制引用
公茂法,夏文华,李国亮,李微微,崔彦平..利用希尔伯特边际谱鉴别变压器励磁涌流[J].电测与仪表,2012,49(4):47-50,4.基金项目
山东科技大学研究科技创新基金资助项目(YCA110213) （YCA110213）
