Change in the Term of Power Transformer Depending Operation on the Distribution of Load Current Harmonics

The article is devoted to the study of the change in the service life of a power transformer depending on the distribution of harmonics of the load current. In the visual programming environment, a model of the power consumption area with a power transformer was created to study the influence of current harmonics on the lifetime of the transformer. Using typical expressions, the influence of harmonics of the load current on the service life of the power transformer is calculated. The obtained results indicate that when the harmonics of the load current increase, the losses in the transformer increase. The results show that the temperature of the transformer increases as the frequency of the load current increases. This, in turn, indicates that the load current, with an increase in its frequency, leads to a reduction in the service life of the transformer.