Analysis and Research on Influence of Seam on Power Transformer's Capacity on Restraining DC Bias
Transformer is irreplaceable to make sure power system running stably. It's showed in research that magnetic resistance is relevant to capacity on restraining DC bias both in three-phase three-column transformer and three-phase five-column transformer. Magnetic resistance can be changed by changing the seam size of transformer. 3D field-circuit coupling models of single-phase four-column power transformer with two kinds of seam were created by FEA in this paper. Models were simulated with different DC bias current. The analysis result of influence of seam size on power transformer's capacity on restraining DC bias was obtained by DC bias current efficient extraction and comparison of models with different seam size, which is the theoretical basis of developing new transformer with more capacity on restraining DC bias.
D. Z. Chen et al., "Analysis and Research on Influence of Seam on Power Transformer's Capacity on Restraining DC Bias", Applied Mechanics and Materials, Vols. 229-231, pp. 903-906, 2012