Title of article
A New Approach for Transformer Interturn Faults Detection Using Vibration Frequency Analysis
Author/Authors
Hajiaghasi, S Department of Electrical Engineering - Shahid Beheshti University , Abbaszadeh, K Department of Electrical Engineering - Khaje Nasir Toosi University of Technology , Salemnia, A Department of Electrical Engineering - Shahid Beheshti University
Pages
15
From page
14
To page
28
Abstract
Interturn fault detection is a challenging issue in power transformer protection. In this paper, interturn faults of distribution transformer are studied and a new online detection method based on vibration analysis is proposed. Transformer electromagnetic forces are analyzed by time stepping finite element (TSFE) modeling of interturn fault. Since the vibration associated with inter-turn faults is caused by electromagnetic forces, axial and radial electromagnetic forces for various interturn faults are studied. Transformer winding vibration under interturn faults is studied through an equivalent mathematical model combined with electromagnetic force analysis. The results show that it is feasible to predict the interturn winding faults of transformer windings with the transformer vibration analysis method. Simulation and experimentation studies are carried out on 20/0.4 kV, 50 kVA distribution transformer. The results confirm the effectiveness of the proposed method.
Keywords
Transformer , Vibration , Interturn Fault , Electromagnetic Force
Serial Year
2019
Record number
2494839
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