Method and system for adaptive time-frequency peak filtering of power signals

The invention discloses an adaptive time-frequency peak filtering method and a system for a power signal. The filtering method comprises the following steps of: obtaining a power signal sequence; determining a time window length of each signal in the power signal sequence according to the power sign...

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Bibliographic Details
Main Author ZHAI MINGYUE
Format Patent
LanguageChinese
English
Published 21.12.2018
Subjects
CALCULATING
COMPUTING
COUNTING
HANDLING RECORD CARRIERS
PHYSICS
PRESENTATION OF DATA
RECOGNITION OF DATA
RECORD CARRIERS
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Summary:The invention discloses an adaptive time-frequency peak filtering method and a system for a power signal. The filtering method comprises the following steps of: obtaining a power signal sequence; determining a time window length of each signal in the power signal sequence according to the power signal sequence; performing point-by-point processing on the power signal sequence to construct an analytic sequence; determining a pseudo Wigner-Ville of the parsed sequence at different lengths of the time window; according to the pseudo Wigner-Ville distribution, determining the power signal recoverysequence; determining a distribution range of a pure power signal according to the power signal recovery sequence; the pure power signal being a noise-free power signal; determining an optimal time window length according to the distribution range; The power signal sequence is filtered according to the optimal time window length, and the filtered power signal sequence is determined. The filteringmethod and the system pro
Bibliography:Application Number: CN201810970675