Using Novel Time Frequency Analysis Method for Time-Varying System Identification

2020 ◽  
pp. 239-246
Author(s):  
Yu Xin ◽  
Hong Hao ◽  
Jun Li
Keyword(s):  
System Identification ◽  
Frequency Analysis ◽  
Time Varying ◽  
Analysis Method ◽  
Time Frequency Analysis ◽  
Time Frequency

Reassigned Time Frequency Analysis for PD Signals in GIS

2013 ◽  
Vol 448-453 ◽  
pp. 1959-1962
Author(s):  
Hui Wang ◽  
Xiu Wei Li ◽  
Yu Xin Yun ◽  
Hai Yan Yuan
Keyword(s):  
Frequency Domain ◽  
Frequency Analysis ◽  
Partial Discharge ◽  
Time Varying ◽  
Analysis Method ◽  
Time Frequency Analysis ◽  
Time Frequency ◽  
The Cross ◽  
Non Stationary Signal

Partial discharge signal in GIS is a kind of typical non-stationary signal, using the time or frequency domain simply is not enough to describe the time-varying information of PD. Based on the reason above, this paper introduces a joint time-frequency analysis method according to the reassignment theory for analyzing the PD of GIS. After the processing of the PD signals simulated and on field, we conclude that this method provides a higher concentration in the time-frequency plane and reduces the most influence of the cross-interference terms.

A Nonlinear Time-Frequency Analysis Method

2004 ◽  
Vol 52 (6) ◽  
pp. 1585-1595 ◽  
Author(s):  
M. Karimi-Ghartemani ◽  
A.K. Ziarani
Keyword(s):  
Frequency Analysis ◽  
Analysis Method ◽  
Time Frequency Analysis ◽  
Time Frequency
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