摘要
从提高计算速度出发,给出了应用二次B样条小波对信号进行高尺度变换的一种快速算法;同时针对电力系统的实际情况,在二次B样条小波的基础上,构造出一个适合于电力系统故障分析的小波母函数,并将它应用于变压器差动保护进行励磁涌流鉴别,EMTP仿真结果证实了该方法的可行性。
A fast algorithm of 2B-spline wavelet transform is introduced to meet the real-time demands of signal processing. On the basis of 2B-spline wavelet, a mother wavelet founction suitable for the fault analysis of power system is constructed. The algorithm and mother wavelet are used to discriminate the inrush current in transformer' s differential protection. Results of EMTP simulations show that this method is feasible .
出处
《继电器》
CSCD
北大核心
2004年第1期32-36,共5页
Relay
