Surface vibration source number estimation of the 220kV running power transformer based on the Wavelet-SVD-Clustering

2016 ◽  
Author(s):  
Yanwen Chen ◽  
Jianyuan Xu ◽  
Xuebin Li ◽  
Chen Cao ◽  
Shuohui Wang ◽  
...  
Keyword(s):  
Power Transformer ◽  
Vibration Source ◽  
Surface Vibration ◽  
Source Number Estimation ◽  
Source Number

A New Vibration Source Number Estimation Method Based on FFT

2011 ◽  
Vol 55-57 ◽  
pp. 1609-1612
Author(s):  
Hong Xian Ye ◽  
Xiao Ping Hu ◽  
Xiao Feng Zhou
Keyword(s):  
Frequency Spectrum ◽  
Fourier Transformation ◽  
Estimation Method ◽  
Fast Fourier Transformation ◽  
Vibration Source ◽  
Vibration Signals ◽  
The Real ◽  
Source Number Estimation ◽  
Spectrum Characteristic ◽  
Source Number

A new vibration source number estimation method based on Fast Fourier Transformation (FFT) is proposed. The frequency spectrum characteristic of vibration signals on a machine was analyzed. The characters of the vibration sources were obtained by means of FFT, which was used to estimate the number of vibration sources. The estimations illustrate that the presented method can obtain the correct source number not only under the condition of less source number than that of measurements. The most important is that it can get the source number correctly on the case of more source number than measurements’. The method gives a new idea to estimate the real vibration sources number.

Correlated Source Number Estimation with Gerschgorin Radii of Partitioned Matrices Products

2019 ◽  
Vol 107 (2) ◽  
pp. 1077-1091
Author(s):  
Jing Wang ◽  
Fei Ji ◽  
Fangjiong Chen ◽  
Zeng Hu
Keyword(s):  
Source Number Estimation ◽  
Source Number
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