Abstract
This chapter presents an intelligent fault classification approach to transformer DGA for dealing with highly versatile or noise-corrupted data. Two methods, i.e. bootstrap and GP, are employed to preprocess gas data and extract fault features for DGA, respectively. GP is applied to establish classification features for each fault type based on dissolved gases. In order to improve GP performance, bootstrap preprocessing is utilised to equalise the sample numbers for different fault types. The features extracted using GP are then used as inputs fed to ANN, SVM and KNN classifiers for fault classifications. The classification accuracies of integrated GP-ANN, GP-SVM and GP-KNN classifiers are compared with the ones of ANN, SVM and KNN classifiers, respectively. The test results indicate that the developed classifiers using GP and bootstrap can significantly improve diagnosis accuracies for transformer DGA.
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Tang, W.H., Wu, Q.H. (2011). Fault Classification for Dissolved Gas Analysis Using Genetic Programming. In: Condition Monitoring and Assessment of Power Transformers Using Computational Intelligence. Power Systems. Springer, London. https://doi.org/10.1007/978-0-85729-052-6_7
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DOI: https://doi.org/10.1007/978-0-85729-052-6_7
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