Frequency domain characteristics and insulation condition evaluation of power transformer oil-paper insulation

2012 ◽  
Author(s):  
Ming-jie Tang ◽  
Min Lei ◽  
Hao Xu ◽  
Yun-cai Lu ◽  
Xu Wei ◽  
...  
Keyword(s):  
Frequency Domain ◽  
Power Transformer ◽  
Transformer Oil ◽  
Condition Evaluation ◽  
Paper Insulation ◽  
Insulation Condition

scholarly journals A New Method for Evaluating Moisture Content and Aging Degree of Transformer Oil-Paper Insulation Based on Frequency Domain Spectroscopy

Energies ◽  
2017 ◽  
Vol 10 (8) ◽  
pp. 1195 ◽  
Author(s):  
Guoqiang Xia ◽  
Guangning Wu ◽  
Bo Gao ◽  
Haojie Yin ◽  
Feibao Yang
Keyword(s):  
Moisture Content ◽  
Frequency Domain ◽  
Transformer Oil ◽  
New Method ◽  
Paper Insulation

scholarly journals Power Transformer Insulation Assessment Based on Oil-Paper Measurement Data Using SVM-Classifier

2018 ◽  
Author(s):  
Suwarno ◽  
Rahman A. Prasojo
Keyword(s):  
Power Transformer ◽  
Measurement Data ◽  
Classification Model ◽  
Support Vector ◽  
Svm Classifier ◽  
Classification Analysis ◽  
Dielectric Characteristics ◽  
Paper Condition ◽  
Paper Insulation ◽  
Insulation Condition

Oil immersed paper insulation condition is a crucial aspect of power transformer’s life condition diagnostic. The measurement testing database collected over the years made it possible for researchers to implement classification analysis to in-service power transformer. This article presents classification analysis of transformer oil-immersed paper insulation condition. The measurements data (dielectric characteristics, dissolved gas analysis, and furanic compounds) of 149 transformers with primary voltage of 150 kV had been gathered and analyzed. The algorithm used for developing classification model is Support Vector Machine (SVM). The model has been trained and tested using different datasets. Different models have been created and the best chosen, resulting in 90.63% accuracy in predicting the oil-immersed paper insulation condition. Further implementation was executed to classify oil-paper condition of 19 Transformers which Furan data is not available. The classification results combined, reviewed, and compared to conventional assessment methods and standards, confirming that the model developed has the ability to do classification of current oil-paper condition based on Dissolved Gasses and Dielectric Characteristics.

The effect of acid accumulation in power-transformer oil on the aging rate of paper insulation

2014 ◽  
Vol 30 (3) ◽  
pp. 19-26 ◽  
Author(s):  
Nick Lelekakis ◽  
Jaury Wijaya ◽  
Daniel Martin ◽  
Dejan Susa
Keyword(s):  
Power Transformer ◽  
Transformer Oil ◽  
Aging Rate ◽  
Acid Accumulation ◽  
Paper Insulation
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