Noise invariant partial discharge classification based on convolutional neural network

Raymond, Wong Jee Keen and Xin, Chong Wan and Kin, Lai Weng and Illias, Hazlee Azil (2021) Noise invariant partial discharge classification based on convolutional neural network. Measurement, 177. ISSN 0263-2241, DOI

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Partial discharge (PD) pattern recognition is essential since it can help to identify the nature of the insulation defect. Numerous machine learning models have been utilized for PD classification applications in the past. However, traditional machine learning models rely on manual feature extraction to obtain training data. They are usually trained using clean PD data measured in the laboratory but are expected to work on-site where some degree of interference or noise is expected. When tested using clean PD data, most machine learning models can easily achieve above 90% accuracy. However, when tested using PD data overlapped with noise, classification accuracy reduces significantly. In this work, the development of a convolutional neural network (CNN)-based PD classification system using transfer learning was proposed. In order to achieve a more practical performance evaluation, a modified 10-fold cross-validation procedure was used where the CNN-based PD classifier was trained using clean PD data but tested using PD data that has been overlapped by noise. The results showed that CNN-based PD classifier was able to achieve up to 16.90% higher classification accuracy under noise contamination compared to traditional machine learning with manual feature extraction. This shows that the proposed method was able to retain higher classification accuracy in the presence of noise.

Item Type: Article
Funders: TARUC Internal Research Grant (UC/I/G2018-00026), Universiti Malaya (GPF077A-2018), Nvidia Corporation
Uncontrolled Keywords: Partial discharge; Feature extraction; Convolutional neural network; Pattern recognition; Electrical insulation; Machine learning
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 21 Mar 2022 04:52
Last Modified: 21 Mar 2022 04:52

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