摘要
利用小波变换多尺度分析分解和重构燃气轮机燃烧室的高频、中频和低频压力信号,并在时域上定位燃烧不稳定性发生的时刻。对于具有不稳定成分的压力信号,该方法能够正确地检测出不稳定性,结果与电厂实际运行情况一致。
Through making use of wavelet transform, the multiscale analysis, decomposition and reconstruc- tion of the combustor' s high frequency, medium frequency and low frequency signals of the gas turbine were implemented, including determination of combustion instability' s location occurred in the time domain. As for the pressure signals with instability, this method can detect the combustion instability that agrees well with real plant operation.
出处
《化工自动化及仪表》
CAS
2017年第5期439-442,486,共5页
Control and Instruments in Chemical Industry
关键词
燃烧不稳定性
小波变换
压力振动
多尺度分析
combustion instability, wavelet transform, pressure vibration, multiscale analysis