一种精确滤除衰减非周期分量的新算法  

A new algorithm for filtering decaying DC components accurately

作　　者：唐建辉[1] 吴在军[1] 胡敏强[1] 

机构地区：[1]东南大学电气工程系,江苏南京210096

出　　处：《继电器》2005年第11期14-17,共4页Relay

摘　　要：提出了精确滤除衰减非周期分量的新算法。新算法对衰减的非周期分量时间常数τ未作假定和要求,是从信号的离散采样值出发,严格推导得到精确结果。文中同时给出了基于该精确算法的简化算法,在τ较小时,精度仍很高。因此,该简化算法具有较高的理论和实用价值,本算法已运用在课题组研制的110kV微机保护通用平台上。To filter decaying DC component accurately, a new algorithm is presented which needn′t the decaying constant τ to be known in advance. The accurate results are deduced out based on the signal′s discrete samples. According to the accurate algorithm, the paper also proposes the simple one.The novel algorithm also has higher computation precision when τ is smaller. This proposed algorithm is proved to be valuable and has been used in 110 kV relay protection platform.

关 键 词：衰减非周期分量 傅氏算法 离散 

分 类 号：TM744[电气工程—电力系统及自动化]