杨培宏,岳立海,亢岚,王国平.基于HHT的电力系统低频振荡监测器的研究[J].电测与仪表,2014,51(21):. YANG Pei-hong,YUE Li-hai,kang lan,wang guo ping.The Study on MonitorSof Power System Low Frequency Oscillation Based onHHT Method[J].Electrical Measurement & Instrumentation,2014,51(21):.
基于HHT的电力系统低频振荡监测器的研究
The Study on MonitorSof Power System Low Frequency Oscillation Based onHHT Method
Aimed to solve the problem--power systemSSlow frequency oscillationSin area main lines,Sthis paper presents aSdecomposition of power systemSlow frequency oscillationSwhich canS monitorSvibrationS modal parametersSquickly and accurately;SThe coreSof low frequency oscillationSmonitorSis an improved Hilbert-Huang transformS(Hilbert-HuangStransform,SHHT)Salgorithm,Sthe algorithmSthrough the onlineSrecord data superposition integral cycle cosine both ends of the signal,Ssignal preprocessingSis the extreme point. The method has solved the EMDSdecompositionSprocess of "end effect" problem;Sthrough the MATLAB simulationSverifies the effectiveness of the proposed method.