Fault diagnosis of actual large-power high-voltage windings using transfer function method

2011 ◽  
Vol 60 (3) ◽  
pp. 269-281 ◽  
Author(s):  
Ebrahim Rahimpour ◽  
Stefan Tenbohlen
Keyword(s):  
Fault Diagnosis ◽  
Transfer Function ◽  
High Voltage ◽  
Function Method ◽  
Power Transformer ◽  
Short Circuit ◽  
Large Power ◽  
Transfer Function Method ◽  
Comparison Algorithms ◽  
Test Objects

Fault diagnosis of actual large-power high-voltage windings using transfer function method The transfer function (TF) method is presently a well-known method used to detect various types of winding damage in power transformers. Although abundant research has been done on this subject using laboratory windings as test objects, it is hard to find one, whose test objects are actual large-power transformer windings. Hence, a 400 kV disc winding consisting of 86 discs is used in this paper to study turn-to-turn short circuit with the help of the TF method. To evaluate the effects of this type of fault on TF curves, some mathematical comparison algorithms are used in this research.

scholarly journals Frequency and time fault diagnosis methods of power transformers

2018 ◽  
Vol 18 (4) ◽  
pp. 162-167 ◽  
Author(s):  
Miroslav Gutten ◽  
Daniel Korenciak ◽  
Matej Kucera ◽  
Richard Janura ◽  
Adam Glowacz ◽  
...  
Keyword(s):  
Fault Diagnosis ◽  
High Voltage ◽  
Impact Test ◽  
Power Transformer ◽  
Short Circuit ◽  
Small Deformation ◽  
Short Circuit Current ◽  
Diagnostic Methods ◽  
Response Analysis ◽  
Short Circuit Currents

Abstract The authors describe experimental and theoretical analyses of faults of power transformer winding. Faults were caused by mechanical effect of short-circuit currents. Measurements of transformer were carried out in high-voltage laboratory. Frequency and time diagnostic methods (method SFRA - Sweep Frequency Response Analysis, impact test) were used for the analyses. Coils of transformer windings were diagnosed by means of the SFRA method and the time impact test. The analyzed methods had a significant sensitivity to a relatively small deformation of coil. In the analysis a new technique for analyzing the effects of short-circuit currents is introduced. This technique is developed for high-voltage transformers (different types of power). The proposed analyses show that it is necessary to analyze the value of short-circuit current. Short-circuit current represents a danger for the operation of the power transformer. The proposed approach can be used for other types of transformers. Moreover, the presented techniques have a potential application for fault diagnosis of electrical equipment such as: transformers and electrical machines.

Nondestructive Fault Diagnosis of a Transformer Using Transfer Function Method

2004 ◽  
Vol 270-273 ◽  
pp. 996-1001
Author(s):  
Tae Joon Park ◽  
Jong Wook Kim ◽  
Sang Woo Kim ◽  
Poo Gyeon Park
Keyword(s):  
Fault Diagnosis ◽  
Transfer Function ◽  
Function Method ◽  
Transfer Function Method

Comparison of FWM- and XPM-induced crosstalk using the volterra series transfer function method

2003 ◽  
Vol 21 (1) ◽  
pp. 40-53 ◽  
Author(s):  
Bo Xu ◽  
M. Brandt-Pearce
Keyword(s):  
Transfer Function ◽  
Function Method ◽  
Volterra Series ◽  
Transfer Function Method

Direct Robust Sampled-Data Marine Control Systems Design on Basis of Parametric Transfer Function Method 1

1998 ◽  
Vol 31 (30) ◽  
pp. 327-330
Author(s):  
B.P. Lampe ◽  
K.Y. Polyakov ◽  
Y.N. Rosenwasser
Keyword(s):  
Transfer Function ◽  
Control Systems ◽  
Function Method ◽  
Systems Design ◽  
Sampled Data ◽  
Transfer Function Method ◽  
Control Systems Design
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