Characteristic Analysis of Ship Transformer Magnetizing Inrush Current and its Suppression Method

Abstract:

Medium voltage in the electric power system of ship typically is powered by a large capacity transformer for low voltage electrical apparatus. When switching on, the primary side of transformer will produce very large current, which would endanger the safe operation of power for ships. The mechanism and characteristics of magnetizing inrush current is analyzed when the transformer switches with no load. We think that the reason caused magnetizing inrush current is transformers saturation. Pre-excitation is presented through a small volume transformer magnetizing method of suppressing the inrush current of transformer and validated by simulation and experiment.

• Periodical: Advanced Materials Research (Volumes 1070-1072)
• Pages: 1154-1158
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1070-1072.1154
• Online since: December 2014
• Authors: Dong Xiang, Fei Yu*
• Keywords: Magnetizing Inrush Current, Pre-Excitation, Ships, Suppression, Transformer

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