International Journal of Research in Electrical, Electronics and Communication Engineering ISSN: 3107-8907 (Online)

Author: Akanksha Khare Shrivastava

Abstract: Transformer is one of the most basic units in modern power system. The use of ferrite core gives an improvement in this direction since it has very high permeability because of which it can withstand higher voltages at reduced physical sizes. Attention has also been given to the fact that at which frequency the transformer works best, i.e. amplifies the input the most. This can be useful while using ferrite core in testing transformers. The transformer windings compose an electrical network in the space. This network must necessarily have a transfer function. By evaluating this transfer function, we can have a good understanding of the transformer windings and equivalent network which have several meshes depending upon order of transfer function. .When a fault occurs, the windings get displaced and in-turn the distribution of impedance parameters gets disturbed. Transfer function through analyzed by Sweep Frequency Response Analysis (SFRA) of power transformer characteristics.

Keywords: Sweep Frequency Response Analysis (SFRA), Swept Frequency Method, Transformers, Voltage