@article{10902/27212,
year = {2023},
month = {1},
url = {https://hdl.handle.net/10902/27212},
abstract = {Power-quality events and operation transients in power systems (PS) with isolated neutral can saturate inductive voltage transformers (IVT), which, when interacting with the overhead and underground cable capacitances, can cause ferroresonance events in the local PS. This abnormal operating mode can partially or totally damage the transformers and switchgears within the affected PS. Distribution system operators (DSO) can minimize these effects by detecting ferroresonance events accurately and fast enough and changing the mode of operation accordingly. Direct detection methods, i.e., based on voltage measurements, are reliable, but the massive deployment of this solution is relatively expensive; i.e., power quality analyzers cost thousands of USD. Alternatively, indirect detection methods are also available, e.g., IVT vibration measurements with accelerometers costing hundreds of USD, but their reliability depends on the installation method used. This manuscript proposes using the acoustic noise caused by magnetostriction forces within the IVT core during ferroresonance events to detect their occurrence. Compared to other indirect methods, electret condenser microphones with preamplifying stage cost less than USD 10 and are less sensitive to the installation procedure. The proposed method is validated experimentally, and its performance compared to IVT vibration measurements one by using the same detection methodology.},
organization = {This work was partially financed by the EU Regional Development Fund (FEDER) and the Spanish Government under RETOS-COLABORACION RTC-2017-6782-3, the Spanish Ministry of Science and Innovation under project PID2021-128941OB-I00, and by the European Union’s Horizon 2020 research and innovation program under grant agreement No. 864579 (FLEXIGRID).},
publisher = {MDPI},
publisher = {Sensors, 2023, 23(1), 195},
title = {Acoustic noise-based detection of ferroresonance events in isolated neutral power systems with inductive voltage transformers},
author = {Martínez Torre, Raquel and Arroyo Gutiérrez, Alberto and Pigazo López, Alberto and Mañana Canteli, Mario and Bayona Blanco, Eduardo and Azcondo Sánchez, Francisco Javier and Bustamante Sánchez, Sergio and Laso Pérez, Alberto},
}