Partial Discharge Diagnostics: Data Cleaning and Feature Extraction

Donny Soh, Sivaneasan Bala Krishnan, Jacob Abraham, Lai Kai Xian, Tseng King Jet and Jimmy Fu Yongyi
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Donny Soh: Infocomm Technology Cluster, Singapore Institute of Technology (SIT), 10 Dover Drive, Singapore 138683, Singapore
Sivaneasan Bala Krishnan: Engineering Cluster, Singapore Institute of Technology (SIT), 10 Dover Drive, Singapore 138683, Singapore
Jacob Abraham: Infocomm Technology Cluster, Singapore Institute of Technology (SIT), 10 Dover Drive, Singapore 138683, Singapore
Lai Kai Xian: SP Group, 2 Kallang Sector, Singapore 349277, Singapore
Tseng King Jet: Engineering Cluster, Singapore Institute of Technology (SIT), 10 Dover Drive, Singapore 138683, Singapore
Jimmy Fu Yongyi: SP Group, 2 Kallang Sector, Singapore 349277, Singapore

Energies, 2022, vol. 15, issue 2, 1-12

Abstract: Detection of partial discharge (PD) in switchgears requires extensive data collection and time-consuming analyses. Data from real live operational environments pose great challenges in the development of robust and efficient detection algorithms due to overlapping PDs and the strong presence of random white noise. This paper presents a novel approach using clustering for data cleaning and feature extraction of phase-resolved partial discharge (PRPD) plots derived from live operational data. A total of 452 PRPD 2D plots collected from distribution substations over a six-month period were used to test the proposed technique. The output of the clustering technique is evaluated on different types of machine learning classification techniques and the accuracy is compared using balanced accuracy score. The proposed technique extends the measurement abilities of a portable PD measurement tool for diagnostics of switchgear condition, helping utilities to quickly detect potential PD activities with minimal human manual analysis and higher accuracy.

Keywords: condition monitoring; partial discharge; PRPD; machine learning; denoising; feature extraction (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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