摘要
傅氏算法由于其良好的滤波性能在电力系统微机保护中得到了广泛的应用。但从近几年发表的相关傅氏算法的文献来看,很多文章中关于信号相量的实部和虚部表达式有错误。这里通过详细的数学推导,给出了在不同数学模型下信号相量实部和虚部的具体表达式,并讨论了各种错误在微机保护应用中带来的问题。
Fourier algorithm has been widely applied to the microcomputer protection. However, as to the expressions of the real or image parts of the phasor, there are many problems in the relevant documents published in recent years. After detailed analysis,the correct expressions are formulated and what the false expressions will bring about to the microcomputer protection is discussed.
出处
《电力系统及其自动化学报》
CSCD
北大核心
2005年第4期41-43,93,共4页
Proceedings of the CSU-EPSA
关键词
傅氏算法
相量表示
微机保护
Fourier algorithm
phasor expression
microcomputer protection
