Fault Diagnostic in the Transformer Winding by Sweep Frequency Response Analysis

2019 ◽  
Author(s):  
Abhishek Kumar ◽  
Priyanshi Aggarwal ◽  
Ganesh B. Kumbhar ◽  
Bhavesh R. Bhalja
Keyword(s):  
Frequency Response ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency ◽  
Transformer Winding ◽  
Fault Diagnostic

scholarly journals Interpretation of sweep frequency response analysis traces on inter-turn short circuit fault

2020 ◽  
Vol 11 (1) ◽  
pp. 309
Author(s):  
Nurul Farahwahida Md Yasid ◽  
A. A. Alawady ◽  
M. F. M. Yousof ◽  
S. Al-Ameri ◽  
M. S. Kamarudin
Keyword(s):  
Frequency Response ◽  
Short Circuit ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Sweep Frequency ◽  
Statistical Indicator ◽  
Three Phase ◽  
Transformer Winding ◽  
Detection And Diagnosis ◽  
Short Circuit Fault

Sweep frequency response analysis (SFRA) is a reliable method for detection and diagnosis of faults in the active part of transformers. However, although SFRA is widely employed, the interpretation of SFRA signature is still a challenge and require experts to analyse them. This is due to lack of guideline and standard for SFRA signature interpretation and clarification. This paper presents the interpretation of SFRA signature by classification and quantification on inter-turn short circuit fault on the transformer winding. The short-circuited turns fault on HV winding phase “A” was practically simulated on three different units of three-phase transformers. The results of simulated fault are presented and discussed. A conclusion was drawn which provides the interpretation of the SFRA response due to inter-turn short circuit fault case by using a statistical indicator which is NCEPRI algorithm.

Diagnosis Criterion of Abnormality of Transformer Winding by Frequency Response Analysis (FRA)

2016 ◽  
Vol 136 (7) ◽  
pp. 654-662
Author(s):  
Satoru Miyazaki ◽  
Yoshinobu Mizutani ◽  
Akira Taguchi ◽  
Junichi Murakami ◽  
Naokazu Tsuji ◽  
...  
Keyword(s):  
Frequency Response ◽  
Response Analysis ◽  
Frequency Response Analysis ◽  
Transformer Winding ◽  
Diagnosis Criterion
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