High-Frequency Modeling of a Three-Winding Power Transformer Using Sweep Frequency Response Analysis

A power transformer is an essential device for stable and reliable transfer to customers. Therefore, accurate modeling of transformers required simulation-based analysis with the model. The paper proposes efficient straightforward parameter estimation based on sweep frequency response (SFRA) test data. method first develops a model consisting repetitive RLC sections mutual inductances then aligns simulated SFRA curve measured one by adjusting parameters. Note that this adjustment individual impacts curve. After aligning two curves, final can be obtained. In paper, actual single-phase, three-winding parameters were estimated field data, showing curves from are consistent