Study on the Influence of Harmonics on Load Loss of Transformer

Abstract Under harmonic condition, transformer loss is significantly higher than that of traditional calculation method. It is necessary to re analyze the resistance model of transformer winding in harmonic environment. In this article, the harmonic loss model of transformer winding considering skin effect and proximity effect is established, and the characteristics of the conductor resistance of transformer winding are obtained by electromagnetic field principle analysis; the conductor resistance of typical harmonic current is measured by experiment, and the effectiveness of the model in reflecting the winding loss under harmonic condition is verified, which makes the load loss of transformer The calculation is more accurate.