Calculation and analysis of transformer’s harmonic loss

Abstract

Researching this calculation of transformer’s harmonic loss is very significant to energy conservation and economic operation of transformer. This paper analyses transformer’s harmonic loss and calculation in detail. On the basis, a harmonic loss calculation method of transformer is presented. This method uses harmonic equivalent circuit of transformer and superposition principle to deduce the calculation formula of transformer’s harmonic loss. The method is distinct and could be programmed easily. This paper researches the relationship between the electric harmonics’ distortion rate and harmonic loss of transformer as well. At last, the curve of relationship between the electric harmonics’ distortion rate and harmonic loss is gained.