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Pre-breakdown current discrimination diagnose technique for transformer mineral oil

F. BENYAHIA1, H. MOULAI1,* , A. NACER1, F. ABERKANE1, A. BEROUAL2

Affiliation

  1. Laboratory of Electrical and Industrial Systems, FEI, USTHB, BP 32, Bab Ezzouar, Algiers, Algeria
  2. Ecole Centrale de Lyon, Ampere CNRS UMR 5005, 36 avenue Guy de Collongue, 69134 Ecully, France

Abstract

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..

Keywords

Transformer oil, Pre-breakdown current, Discrimination, Signal processing.

Submitted at: Sept. 28, 2013
Accepted at: Nov. 7, 2013

Citation

F. BENYAHIA, H. MOULAI, A. NACER, F. ABERKANE, A. BEROUAL, Pre-breakdown current discrimination diagnose technique for transformer mineral oil, Journal of Optoelectronics and Advanced Materials Vol. 15, Iss. 11-12, pp. 1311-1315 (2013)