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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Assessment of Macro Fiber Composite Sensors for Measurement of Acoustic Partial Discharge Signals in Power Transformers

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Autor(es):
de Castro, Bruno Albuquerque ; Brunini, Danilo de Melo ; Baptista, Fabricio Guimaraes ; Andreoli, Andre Luiz ; Covolan Ulson, Jose Alfredo
Número total de Autores: 5
Tipo de documento: Artigo Científico
Fonte: IEEE SENSORS JOURNAL; v. 17, n. 18, p. 6090-6099, SEP 15 2017.
Citações Web of Science: 12
Resumo

This paper presents a performance assessment of macro fiber composite (MFC) sensors for measuring acoustic emission (AE) signals from partial discharges (PD) in power transformers filled with mineral oil. MFC sensors are low-profile and flexible, allowing them to be attached to uneven surfaces, such as a transformer wall. Two types of MFC sensors were assessed: P1 (d33 effect) and P2 (d31 effect), which are optimized for different deformations in the structure, such as elongation and contraction, respectively. In addition, a conventional AE sensor, R15I-AST model from Physical Acoustics South America, was also used as a reference for comparative analysis. Four metrics were applied to the signals: root mean square, energy criterion, Akaike criterion, power spectral density, and correlation. The experimental results indicate a high similarity between the MFC sensors and the conventional AE sensor, which expands the research field in acoustic PD measurement in power transformers by using low-cost and flexible sensors. (AU)

Processo FAPESP: 15/02500-6 - Sistemas de monitoramento baseados na técnica da impedância eletromecânica: novas tendências e desafios
Beneficiário:Fabricio Guimarães Baptista
Linha de fomento: Auxílio à Pesquisa - Regular
Processo FAPESP: 15/24903-5 - Sistemas de monitoramento de integridade estrutural baseados na impedância eletromecânica em aplicações com baixa relação sinal-ruído
Beneficiário:Bruno Albuquerque de Castro
Linha de fomento: Bolsas no Brasil - Doutorado