Hydroelectric generating set state monitoring signal digital filtering method, device and system based on time-frequency conversion

The invention discloses a hydroelectric generating set state monitoring signal digital filtering method, device and system based on time-frequency conversion, and the method comprises the steps: obtaining a set filtering parameter which corresponds to one or more filtering frequency bands; performin...

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Hauptverfasser: PAN WEIFENG, HU FEI, YAN LI, ZHU CHUANGU, LIU BIAOFENG, WU JIAN, SUN ERJUN
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creator PAN WEIFENG
HU FEI
YAN LI
ZHU CHUANGU
LIU BIAOFENG
WU JIAN
SUN ERJUN
description The invention discloses a hydroelectric generating set state monitoring signal digital filtering method, device and system based on time-frequency conversion, and the method comprises the steps: obtaining a set filtering parameter which corresponds to one or more filtering frequency bands; performing fast Fourier transform calculation on the obtained original time domain waveform data of the statemonitoring signal to obtain initial frequency domain data of the original time domain waveform data; filtering the initial frequency domain data based on each filtering frequency band corresponding to the filtering parameter to obtain new frequency domain data; carrying out inverse fast Fourier transform on the new frequency domain data to obtain a new time domain waveform, and completing digitalfiltering of the state monitoring signal. According to the invention, an original time domain waveform signal is monitored for a state; fast Fourier transform calculation is performed to obtain frequency domain data of a moni
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subjects CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
title Hydroelectric generating set state monitoring signal digital filtering method, device and system based on time-frequency conversion
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