Assessment of Macro Fiber Composite Sensors for Measurement of Acoustic Partial Discharge Signals in Power Transformers
Carregando...
Arquivos
Data
2017-09-15
Autores
De Castro, Bruno Albuquerque [UNESP]
De Melo Brunini, Danilo [UNESP]
Baptista, Fabricio Guimaraes [UNESP]
Andreoli, Andre Luiz [UNESP]
Ulson, Jose Alfredo Covolan [UNESP]
Título da Revista
ISSN da Revista
Título de Volume
Editor
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.
Descrição
Palavras-chave
acoustic emission, low cost system, MFC Sensor, partial discharges, transformers
Como citar
IEEE Sensors Journal, v. 17, n. 18, p. 6090-6099, 2017.