Abstract
Transformer buildings are at the heart of the effective operation of distribution systems, and heating problems of transformers under severe operational conditions are among the main factors affecting the lifetime, efficiency, technical losses, etc., of such important power system assets. It is crucial that the inside temperature of transformer buildings is higher than the outside temperature due to the operation of the transformer and the effect of ambient conditions. This issue may cause several problems such as additional transformer aging, losses, and moisture. The main purpose of this study is to decrease the inside temperature of transformer buildings; in other words, to prevent the inside temperature from being higher than the outside temperature. To realize this, it is recommended to apply a combined heat reduction technique by covering the outer surface with a reflective surface and use a low-emitting material on the inner surface. The relevant results of the practical evidence in this manner are presented in detail at a distribution system in Turkey with different climate and loading conditions in the summertime.
Highlights
Solar energy is a type of energy that radiates from the atmosphere to the earth and comes through radiation as a well-known phenomenon
The main purpose of this study is to decrease the inside temperature of transformer buildings to avoid any disruptive effects
This study indicates the results of a real system application related to creating selective indoor and outdoor surfaces of transformer buildings to decrease their inside temperature
Summary
Solar energy is a type of energy that radiates from the atmosphere to the earth and comes through radiation as a well-known phenomenon. Insulating with thermal insulation systems that insulate conventional conductive heat against solar radiation does not always lead to successful results for different applications. Transformers are among the most widely used components in interconnected power systems and play a vital role in providing an uninterrupted power supply to end-users [1]. One major concern in former research is hot spot temperature and its impact on the lifetime of transformers. Much of the current literature on this topic pays particular attention to the lifetime management of transformers, analyzing the aging issues caused by overheated windings and degraded solid insulation systems. Since transformer buildings covered with conventional thermal insulation materials (such as rock wool and Styrofoam) trap heat and reduce heat loss, the inside
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