Advanced Diagnostic Approach for High-Voltage Insulators: Analyzing Partial Discharges through Zero-Crossing Rate and Fundamental Frequency Estimation of Acoustic Raw Data

Kaynan Maresch (), Luiz F. Freitas-Gutierres, Aécio L. Oliveira, Aquiles S. Borin, Ghendy Cardoso, Juliano S. Damiani, André M. Morais, Cristian H. Correa and Erick F. Martins
Additional contact information
Kaynan Maresch: Laboratory for Analysis and Protection of Electrical Systems, Technology Center, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
Luiz F. Freitas-Gutierres: Laboratory for Analysis and Protection of Electrical Systems, Technology Center, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
Aécio L. Oliveira: Laboratory for Analysis and Protection of Electrical Systems, Technology Center, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
Aquiles S. Borin: Laboratory for Analysis and Protection of Electrical Systems, Technology Center, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
Ghendy Cardoso: Laboratory for Analysis and Protection of Electrical Systems, Technology Center, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
Juliano S. Damiani: Laboratory for Analysis and Protection of Electrical Systems, Technology Center, Federal University of Santa Maria, Santa Maria 97105-900, RS, Brazil
André M. Morais: High and Extra High Voltage Laboratory, Institute of Technology, Federal University of Pará, Pará 66075-110, PA, Brazil
Cristian H. Correa: Engineering Board, CPFL Transmission, Porto Alegre 90230-181, RS, Brazil
Erick F. Martins: Engineering Board, CPFL Transmission, Porto Alegre 90230-181, RS, Brazil

Energies, 2023, vol. 16, issue 16, 1-21

Abstract: Acoustic inspection is a valuable technique that can detect early stage defects in equipment, thereby facilitating predictive maintenance. In recent times, ultrasonic sensors have made detecting partial discharges through acoustic sensing increasingly feasible. However, interpreting the acoustic signals can pose challenges, as it requires extensive expertise and knowledge of equipment configuration. To address this issue, a technique based on zero-crossing rate and fundamental frequency estimation has been proposed to standardize insulator diagnosis. In an experiment involving a database of 72 raw acoustic signals with frequencies ranging from 0 to 128 kHz, various types of pollution and defects were introduced to a chain of insulators. By employing the proposed technique, the occurrence of partial discharges can be detected and classified according to type, such as corona or surface discharges. This advanced approach to diagnosis simplifies the process while providing valuable insights into the severity of observed phenomena in the field.

Keywords: classification; high-voltage; insulator; partial discharge; acoustic inspection (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: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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