基于EEMD的水电机组信号分解和频谱分析

Research on Hydroelectric Generating Signals Decomposition and Spectrum Analysis Base on EEMD

采用集合经验模态分解EEMD方法对水电机组多个信号进行分析,结果表明,EEMD分解能够将水电机组信号分解成不同频域内IMF分量分解,各IMF分量与现场振源有一定的关联,具有直观的物理意义,同时对不同工况的信号进行对比分析。

using EEMD method （ ensemble empirical mode decomposition） to analysis multiple signals of hydroelectric generating,the results show that,EEMD decomposition can decompose hydroelectric generating signals to different frequency domain IMF com-ponent decomposition,each IMF component have a certain correlation the field source,with intuitive physical meaning,at the same time,the signals of different condition carries on the contrast analysis.