Express diagnostics of power oil transformers by vibroacoustics and partial dischargesDilmurod Yusupov, Ibroximjon Ismoilov, Abdugani Rakhmatov, Orifjon Kilichov, Nusratillo Toshpulatov, Aziz Babayev and Oybek MatchonovE3S Web Conf., 434 (2023) 01027DOI: https://doi.org/10.1051/e3sconf/202343401027