院一敏,李宗恩,武晓明.运行中电力变压器表面三维振动信号小波分析[J].电测与仪表,2015,52(15):. YUAN Yi-min,LI Zong-en,WU Xiao-ming.Wavelet analysis on three-dimensional surface vibration signal of the running power transformer[J].Electrical Measurement & Instrumentation,2015,52(15):.
运行中电力变压器表面三维振动信号小波分析
Wavelet analysis on three-dimensional surface vibration signal of the running power transformer
Theoretical analysis and practice experience has shown that, the vibration signal on power transformer surface can be used to analyze and judge the work state of the winding and iron core. For vibration analysis, to extract a precise feature of the vibration signal is a basic work. Three-dimensional surface vibration signal of the running power transformer is analyzed based on wavelet multiresolution analysis. Based on the Parseval theorem, the feature of frequency bands-energy in X, Y, Z directions is computed and compared. It can provide some reference for the power transformer vibration analysis.
