Power transformer fault classification based on dissolved gas analysis by implementing bootstrap and genetic programming

A. Shintemirov, W. Tang, Q. H. Wu

Research output: Contribution to journalArticlepeer-review

103 Citations (Scopus)


This paper presents an intelligent fault classification approach to power transformer dissolved gas analysis (DGA), dealing with highly versatile or noise-corrupted data. Bootstrap and genetic programming (GP) are implemented to improve the interpretation accuracy for DGA of power transformers. Bootstrap preprocessing is utilized to approximately equalize the sample numbers for different fault classes to improve subsequent fault classification with GP feature extraction. GP is applied to establish classification features for each class based on the collected gas data. The features extracted with GP are then used as the inputs to artificial neural network (ANN), support vector machine (SVM) and K-nearest neighbor (KNN) classifiers for fault classification. The classification accuracies of the combined GP-ANN, GP-SVM, and GP-KNN classifiers are compared with the ones derived from ANN, SVM, and KNN classifiers, respectively. The test results indicate that the developed preprocessing approach can significantly improve the diagnosis accuracies for power transformer fault classification.

Original languageEnglish
Pages (from-to)69-79
Number of pages11
JournalIEEE Transactions on Systems, Man and Cybernetics Part C: Applications and Reviews
Issue number1
Publication statusPublished - 2009


  • Bootstrap
  • Dissolved gas analysis (DGA)
  • Fault classification
  • Feature extraction
  • Genetic programming
  • K-nearest neighbor (KNN)
  • Neural networks
  • Power transformer
  • Support vector machine (SVM)

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Software
  • Information Systems
  • Human-Computer Interaction
  • Computer Science Applications
  • Electrical and Electronic Engineering

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