RT Conference Proceedings T1 Optical fiber sensor of partial discharges in high voltage DC experiments A1 Búa-Núñez, Iago A1 Azcárraga-Ramos, C.G. A1 Posada Román, Julio Enrique A1 García Souto, José Antonio AB A setup simulating High Voltage DC (HVDC) transformers barriers was developed to demonstrate the effectiveness of an optical fiber (OF) sensor in detecting partial discharges (PD) under these peculiar conditions. Different PD detection techniques were compared: electrical methods, and acoustic methods. Standard piezoelectric sensors (R15i-AST) and the above mentioned OF sensors were used for acoustic detection. The OF sensor was able to detect PD acoustically with a sensitivity better than the other detection methods. The multichannel instrumentation system was tested in real HVDC conditions with the aim of analyzing the behavior of the insulation (mineral oil/pressboard). PB The International Society For Optical (SPIE) SN 0277-786X YR 2014 FD 2014 LK https://hdl.handle.net/10016/22346 UL https://hdl.handle.net/10016/22346 LA eng NO This work was supported by the Spanish Ministry of Science and Innovation under the Project DPI2009-14628-C03-01and the scholarship FPI BES-2010-042083 and the Spanish Ministry of Economy and Competitiveness under the visitingresearcher grant EEBB-I-2013-07675. C.G. Azcárraga-Ramos gratefully acknowledges the Instituto de InvestigacionesEléctricas for a study leave and the Mexican Science Council (CONACYT) for financially supporting his graduatestudies. PD tests have been made in the High Voltage and Material Engineering Laboratory of the University of Bologna. DS e-Archivo RD 18 jul. 2024