Modeling and analysis of 100 KVA distribution transformer core saturation effect under non-sinusoidal supply

In transformers the main consequence of harmonic currents is an increase in losses, mainly in windings, because of the deformation of the leakage fields. Higher losses means that more heat is generated in the transformer so that the operating temperature increases, leading to deterioration of the insulation and a potential reduction in lifetime. This paper includes the effects of non-sinusoidal supply voltage on the 100kVA distribution transformer. This paper presents a hysteresis based transformer simulink model to estimate transformer saturation with nonsinusoidal supply. Magnetic core saturation of transformers and rotating machines generate harmonics. The phenomena of core saturation are described by the hysteresis curve. And also investigate the effect of supply voltage on the excitation current of a 100kVAdistribution transformer. This paper also observe the which harmonic is more dominating in a saturated transformer.