Pre-breakdown current discrimination diagnose technique for transformer mineral oil

F. Benyahia (1) , Hocine Moulai (1) , Azzeddine Nacer (1) , F. Aberkane (1) , Abderrahmane Beroual (2)

1 USTHB - Université des Sciences et de la Technologie Houari Boumediene = University of Sciences and Technology Houari Boumediene [Alger]
2 AMPERE - Ampère

This paper presents a survey of positive pre-breakdown and breakdown currents in transformer mineral oil submitted to 50 Hz alternating voltage. The streamer positive currents are classified according to their possibility to lead towards breakdown. The data constituting the current vectors are collected in real time and smoothed by the use of arithmetic and geometric averages in order to serve as a fast and reliable diagnosis element.

Mots clés: Transformer oil; Pre-breakdown current; Discrimination; Signal processing

Domaines: Energie électrique

F. Benyahia, Hocine Moulai, Azzeddine Nacer, F. Aberkane, Abderrahmane Beroual. Pre-breakdown current discrimination diagnose technique for transformer mineral oil. Journal of Optoelectronics and Advanced Materials, 2013, 15 (11-12), pp.1311-1315. ⟨hal-01074233⟩